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c5e5ee67490e7e7af56052d8f8beb75db002c2f1
gtk3/gtk/gtknotebook.c
Carlos Garnacho 3e60650fa8 notebook: Fix assert in ::drag-motion 
The drag destination might be empty, we shouldn't be checking whether
it contains pages at all. Instead, check the source notebook, which
ought to have a selected page if you're dragging something from there.

https://bugzilla.gnome.org/show_bug.cgi?id=749893
2015-05-26 18:05:36 +02:00

8559 lines
269 KiB
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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp:ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "gtknotebook.h"
#include "gtkmain.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtklabel.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtkbindings.h"
#include "gtkprivate.h"
#include "gtkdnd.h"
#include "gtkbuildable.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetpath.h"
#include "gtkwidgetprivate.h"
#include "a11y/gtknotebookaccessible.h"
/**
* SECTION:gtknotebook
* @Short_description: A tabbed notebook container
* @Title: GtkNotebook
* @See_also: #GtkContainer
*
* The #GtkNotebook widget is a #GtkContainer whose children are pages that
* can be switched between using tab labels along one edge.
*
* There are many configuration options for GtkNotebook. Among other
* things, you can choose on which edge the tabs appear
* (see gtk_notebook_set_tab_pos()), whether, if there are too many
* tabs to fit the notebook should be made bigger or scrolling
* arrows added (see gtk_notebook_set_scrollable()), and whether there
* will be a popup menu allowing the users to switch pages.
* (see gtk_notebook_popup_enable(), gtk_notebook_popup_disable())
*
* # GtkNotebook as GtkBuildable
*
* The GtkNotebook implementation of the #GtkBuildable interface
* supports placing children into tabs by specifying “tab” as the
* “type” attribute of a <child> element. Note that the content
* of the tab must be created before the tab can be filled.
* A tab child can be specified without specifying a <child>
* type attribute.
*
* To add a child widget in the notebooks action area, specify
* "action-start" or “action-end” as the “type” attribute of the
* <child> element.
*
* An example of a UI definition fragment with GtkNotebook:
* |[
* <object class="GtkNotebook">
* <child>
* <object class="GtkLabel" id="notebook-content">
* <property name="label">Content</property>
* </object>
* </child>
* <child type="tab">
* <object class="GtkLabel" id="notebook-tab">
* <property name="label">Tab</property>
* </object>
* </child>
* </object>
* ]|
*/
#define SCROLL_DELAY_FACTOR 5
#define SCROLL_THRESHOLD 12
#define DND_THRESHOLD_MULTIPLIER 4
#define FRAMES_PER_SECOND 45
#define MSECS_BETWEEN_UPDATES (1000 / FRAMES_PER_SECOND)
#define TIMEOUT_INITIAL 500
#define TIMEOUT_REPEAT 50
#define TIMEOUT_EXPAND 500
typedef struct _GtkNotebookPage GtkNotebookPage;
typedef enum
{
DRAG_OPERATION_NONE,
DRAG_OPERATION_REORDER,
DRAG_OPERATION_DETACH
} GtkNotebookDragOperation;
enum {
ACTION_WIDGET_START,
ACTION_WIDGET_END,
N_ACTION_WIDGETS
};
struct _GtkNotebookPrivate
{
GtkNotebookDragOperation operation;
GtkNotebookPage *cur_page;
GtkNotebookPage *detached_tab;
GtkNotebookPage *prelight_tab;
GtkTargetList *source_targets;
GtkWidget *action_widget[N_ACTION_WIDGETS];
GtkWidget *dnd_window;
GtkWidget *menu;
GdkWindow *drag_window;
GdkWindow *event_window;
GList *children;
GList *first_tab; /* The first tab visible (for scrolling notebooks) */
GList *focus_tab;
gint drag_begin_x;
gint drag_begin_y;
gint drag_offset_x;
gint drag_offset_y;
gint drag_window_x;
gint drag_window_y;
gint mouse_x;
gint mouse_y;
gint pressed_button;
GQuark group;
guint dnd_timer;
guint switch_tab_timer;
GList *switch_tab;
guint32 timer;
guint32 timestamp;
guint button : 2;
guint child_has_focus : 1;
guint click_child : 3;
guint during_detach : 1;
guint during_reorder : 1;
guint remove_in_detach : 1;
guint focus_out : 1; /* Flag used by ::move-focus-out implementation */
guint has_scrolled : 1;
guint in_child : 3;
guint need_timer : 1;
guint show_border : 1;
guint show_tabs : 1;
guint scrollable : 1;
guint tab_pos : 2;
guint has_before_previous : 1;
guint has_before_next : 1;
guint has_after_previous : 1;
guint has_after_next : 1;
};
enum {
SWITCH_PAGE,
FOCUS_TAB,
SELECT_PAGE,
CHANGE_CURRENT_PAGE,
MOVE_FOCUS_OUT,
REORDER_TAB,
PAGE_REORDERED,
PAGE_REMOVED,
PAGE_ADDED,
CREATE_WINDOW,
LAST_SIGNAL
};
enum {
STEP_PREV,
STEP_NEXT
};
typedef enum
{
ARROW_NONE,
ARROW_LEFT_BEFORE,
ARROW_RIGHT_BEFORE,
ARROW_LEFT_AFTER,
ARROW_RIGHT_AFTER
} GtkNotebookArrow;
typedef enum
{
POINTER_BEFORE,
POINTER_AFTER,
POINTER_BETWEEN
} GtkNotebookPointerPosition;
#define ARROW_IS_LEFT(arrow) ((arrow) == ARROW_LEFT_BEFORE || (arrow) == ARROW_LEFT_AFTER)
#define ARROW_IS_BEFORE(arrow) ((arrow) == ARROW_LEFT_BEFORE || (arrow) == ARROW_RIGHT_BEFORE)
enum {
PROP_0,
PROP_TAB_POS,
PROP_SHOW_TABS,
PROP_SHOW_BORDER,
PROP_SCROLLABLE,
PROP_PAGE,
PROP_ENABLE_POPUP,
PROP_GROUP_NAME
};
enum {
CHILD_PROP_0,
CHILD_PROP_TAB_LABEL,
CHILD_PROP_MENU_LABEL,
CHILD_PROP_POSITION,
CHILD_PROP_TAB_EXPAND,
CHILD_PROP_TAB_FILL,
CHILD_PROP_REORDERABLE,
CHILD_PROP_DETACHABLE
};
#define GTK_NOTEBOOK_PAGE(_glist_) ((GtkNotebookPage *)((GList *)(_glist_))->data)
/* some useful defines for calculating coords */
#define PAGE_LEFT_X(_page_) (((GtkNotebookPage *) (_page_))->allocation.x)
#define PAGE_RIGHT_X(_page_) (((GtkNotebookPage *) (_page_))->allocation.x + ((GtkNotebookPage *) (_page_))->allocation.width)
#define PAGE_MIDDLE_X(_page_) (((GtkNotebookPage *) (_page_))->allocation.x + ((GtkNotebookPage *) (_page_))->allocation.width / 2)
#define PAGE_TOP_Y(_page_) (((GtkNotebookPage *) (_page_))->allocation.y)
#define PAGE_BOTTOM_Y(_page_) (((GtkNotebookPage *) (_page_))->allocation.y + ((GtkNotebookPage *) (_page_))->allocation.height)
#define PAGE_MIDDLE_Y(_page_) (((GtkNotebookPage *) (_page_))->allocation.y + ((GtkNotebookPage *) (_page_))->allocation.height / 2)
#define NOTEBOOK_IS_TAB_LABEL_PARENT(_notebook_,_page_) (gtk_widget_get_parent (((GtkNotebookPage *) (_page_))->tab_label) == ((GtkWidget *) (_notebook_)))
struct _GtkNotebookPage
{
GtkWidget *child;
GtkWidget *tab_label;
GtkWidget *menu_label;
GtkWidget *last_focus_child; /* Last descendant of the page that had focus */
guint default_menu : 1; /* If true, we create the menu label ourself */
guint default_tab : 1; /* If true, we create the tab label ourself */
guint expand : 1;
guint fill : 1;
guint reorderable : 1;
guint detachable : 1;
/* if true, the tab label was visible on last allocation; we track this so
* that we know to redraw the tab area if a tab label was hidden then shown
* without changing position */
guint tab_allocated_visible : 1;
GtkRequisition requisition;
GtkAllocation allocation;
gulong mnemonic_activate_signal;
gulong notify_visible_handler;
};
static const GtkTargetEntry notebook_targets [] = {
{ "GTK_NOTEBOOK_TAB", GTK_TARGET_SAME_APP, 0 },
};
#ifdef G_DISABLE_CHECKS
#define CHECK_FIND_CHILD(notebook, child) \
gtk_notebook_find_child (notebook, child, G_STRLOC)
#else
#define CHECK_FIND_CHILD(notebook, child) \
gtk_notebook_find_child (notebook, child, NULL)
#endif
/*** GtkNotebook Methods ***/
static gboolean gtk_notebook_select_page (GtkNotebook *notebook,
gboolean move_focus);
static gboolean gtk_notebook_focus_tab (GtkNotebook *notebook,
GtkNotebookTab type);
static gboolean gtk_notebook_change_current_page (GtkNotebook *notebook,
gint offset);
static void gtk_notebook_move_focus_out (GtkNotebook *notebook,
GtkDirectionType direction_type);
static gboolean gtk_notebook_reorder_tab (GtkNotebook *notebook,
GtkDirectionType direction_type,
gboolean move_to_last);
static void gtk_notebook_remove_tab_label (GtkNotebook *notebook,
GtkNotebookPage *page);
static void gtk_notebook_set_tab_label_packing (GtkNotebook *notebook,
GtkWidget *child,
gboolean expand,
gboolean fill);
static void gtk_notebook_query_tab_label_packing (GtkNotebook *notebook,
GtkWidget *child,
gboolean *expand,
gboolean *fill);
/*** GObject Methods ***/
static void gtk_notebook_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_notebook_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
/*** GtkWidget Methods ***/
static void gtk_notebook_destroy (GtkWidget *widget);
static void gtk_notebook_map (GtkWidget *widget);
static void gtk_notebook_unmap (GtkWidget *widget);
static void gtk_notebook_realize (GtkWidget *widget);
static void gtk_notebook_unrealize (GtkWidget *widget);
static void gtk_notebook_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_notebook_get_preferred_height(GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_notebook_get_preferred_width_for_height
(GtkWidget *widget,
gint height,
gint *minimum,
gint *natural);
static void gtk_notebook_get_preferred_height_for_width
(GtkWidget *widget,
gint width,
gint *minimum,
gint *natural);
static void gtk_notebook_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_notebook_draw (GtkWidget *widget,
cairo_t *cr);
static gboolean gtk_notebook_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_notebook_button_release (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_notebook_popup_menu (GtkWidget *widget);
static gboolean gtk_notebook_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_notebook_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_notebook_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gboolean gtk_notebook_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gboolean gtk_notebook_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_notebook_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static void gtk_notebook_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static gboolean gtk_notebook_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_notebook_style_updated (GtkWidget *widget);
/*** Drag and drop Methods ***/
static void gtk_notebook_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static void gtk_notebook_drag_end (GtkWidget *widget,
GdkDragContext *context);
static gboolean gtk_notebook_drag_failed (GtkWidget *widget,
GdkDragContext *context,
GtkDragResult result);
static gboolean gtk_notebook_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_notebook_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean gtk_notebook_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_notebook_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint info,
guint time);
static void gtk_notebook_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *data,
guint info,
guint time);
/*** GtkContainer Methods ***/
static void gtk_notebook_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_notebook_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gtk_notebook_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_notebook_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_notebook_set_focus_child (GtkContainer *container,
GtkWidget *child);
static GType gtk_notebook_child_type (GtkContainer *container);
static void gtk_notebook_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static GtkWidgetPath * gtk_notebook_get_path_for_child (GtkContainer *container,
GtkWidget *widget);
/*** GtkNotebook Methods ***/
static gint gtk_notebook_real_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position);
static GtkNotebook *gtk_notebook_create_window (GtkNotebook *notebook,
GtkWidget *page,
gint x,
gint y);
/*** GtkNotebook Private Functions ***/
static void gtk_notebook_redraw_tabs (GtkNotebook *notebook);
static void gtk_notebook_redraw_tabs_junction (GtkNotebook *notebook);
static void gtk_notebook_redraw_arrows (GtkNotebook *notebook);
static void gtk_notebook_real_remove (GtkNotebook *notebook,
GList *list);
static void gtk_notebook_update_labels (GtkNotebook *notebook);
static gint gtk_notebook_timer (GtkNotebook *notebook);
static void gtk_notebook_set_scroll_timer (GtkNotebook *notebook);
static gint gtk_notebook_page_compare (gconstpointer a,
gconstpointer b);
static GList* gtk_notebook_find_child (GtkNotebook *notebook,
GtkWidget *child,
const gchar *function);
static GList * gtk_notebook_search_page (GtkNotebook *notebook,
GList *list,
gint direction,
gboolean find_visible);
static void gtk_notebook_child_reordered (GtkNotebook *notebook,
GtkNotebookPage *page);
/*** GtkNotebook Drawing Functions ***/
static void gtk_notebook_paint (GtkWidget *widget,
cairo_t *cr);
static void gtk_notebook_draw_tab (GtkNotebook *notebook,
GtkNotebookPage *page,
cairo_t *cr,
gboolean use_flags);
static void gtk_notebook_draw_arrow (GtkNotebook *notebook,
cairo_t *cr,
GtkNotebookArrow arrow);
/*** GtkNotebook Size Allocate Functions ***/
static void gtk_notebook_pages_allocate (GtkNotebook *notebook);
static gboolean gtk_notebook_page_allocate (GtkNotebook *notebook,
GtkNotebookPage *page);
static void gtk_notebook_calc_tabs (GtkNotebook *notebook,
GList *start,
GList **end,
gint *tab_space,
guint direction);
/*** GtkNotebook Page Switch Methods ***/
static void gtk_notebook_real_switch_page (GtkNotebook *notebook,
GtkWidget *child,
guint page_num);
/*** GtkNotebook Page Switch Functions ***/
static void gtk_notebook_switch_page (GtkNotebook *notebook,
GtkNotebookPage *page);
static gint gtk_notebook_page_select (GtkNotebook *notebook,
gboolean move_focus);
static void gtk_notebook_switch_focus_tab (GtkNotebook *notebook,
GList *new_child);
static void gtk_notebook_menu_switch_page (GtkWidget *widget,
GtkNotebookPage *page);
/*** GtkNotebook Menu Functions ***/
static void gtk_notebook_menu_item_create (GtkNotebook *notebook,
GList *list);
static void gtk_notebook_menu_label_unparent (GtkWidget *widget,
gpointer data);
static void gtk_notebook_menu_detacher (GtkWidget *widget,
GtkMenu *menu);
/*** GtkNotebook Private Setters ***/
static void gtk_notebook_update_tab_states (GtkNotebook *notebook);
static gboolean gtk_notebook_mnemonic_activate_switch_page (GtkWidget *child,
gboolean overload,
gpointer data);
static gboolean focus_tabs_in (GtkNotebook *notebook);
static gboolean focus_child_in (GtkNotebook *notebook,
GtkDirectionType direction);
static void stop_scrolling (GtkNotebook *notebook);
static void do_detach_tab (GtkNotebook *from,
GtkNotebook *to,
GtkWidget *child,
gint x,
gint y);
/* GtkBuildable */
static void gtk_notebook_buildable_init (GtkBuildableIface *iface);
static void gtk_notebook_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
static guint notebook_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkNotebook, gtk_notebook, GTK_TYPE_CONTAINER,
G_ADD_PRIVATE (GtkNotebook)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_notebook_buildable_init))
static void
add_tab_bindings (GtkBindingSet *binding_set,
GdkModifierType modifiers,
GtkDirectionType direction)
{
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Tab, modifiers,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Tab, modifiers,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
}
static void
add_arrow_bindings (GtkBindingSet *binding_set,
guint keysym,
GtkDirectionType direction)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_binding_entry_add_signal (binding_set, keysym, GDK_CONTROL_MASK,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
gtk_binding_entry_add_signal (binding_set, keypad_keysym, GDK_CONTROL_MASK,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
}
static void
add_reorder_bindings (GtkBindingSet *binding_set,
guint keysym,
GtkDirectionType direction,
gboolean move_to_last)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_binding_entry_add_signal (binding_set, keysym, GDK_MOD1_MASK,
"reorder_tab", 2,
GTK_TYPE_DIRECTION_TYPE, direction,
G_TYPE_BOOLEAN, move_to_last);
gtk_binding_entry_add_signal (binding_set, keypad_keysym, GDK_MOD1_MASK,
"reorder_tab", 2,
GTK_TYPE_DIRECTION_TYPE, direction,
G_TYPE_BOOLEAN, move_to_last);
}
static gboolean
gtk_object_handled_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy)
{
gboolean continue_emission;
GObject *object;
object = g_value_get_object (handler_return);
g_value_set_object (return_accu, object);
continue_emission = !object;
return continue_emission;
}
static void
gtk_notebook_compute_expand (GtkWidget *widget,
gboolean *hexpand_p,
gboolean *vexpand_p)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gboolean hexpand;
gboolean vexpand;
GList *list;
GtkNotebookPage *page;
hexpand = FALSE;
vexpand = FALSE;
for (list = priv->children; list; list = list->next)
{
page = list->data;
hexpand = hexpand ||
gtk_widget_compute_expand (page->child, GTK_ORIENTATION_HORIZONTAL);
vexpand = vexpand ||
gtk_widget_compute_expand (page->child, GTK_ORIENTATION_VERTICAL);
if (hexpand & vexpand)
break;
}
*hexpand_p = hexpand;
*vexpand_p = vexpand;
}
static void
gtk_notebook_class_init (GtkNotebookClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
GtkBindingSet *binding_set;
gobject_class->set_property = gtk_notebook_set_property;
gobject_class->get_property = gtk_notebook_get_property;
widget_class->destroy = gtk_notebook_destroy;
widget_class->map = gtk_notebook_map;
widget_class->unmap = gtk_notebook_unmap;
widget_class->realize = gtk_notebook_realize;
widget_class->unrealize = gtk_notebook_unrealize;
widget_class->get_preferred_width = gtk_notebook_get_preferred_width;
widget_class->get_preferred_height = gtk_notebook_get_preferred_height;
widget_class->get_preferred_width_for_height = gtk_notebook_get_preferred_width_for_height;
widget_class->get_preferred_height_for_width = gtk_notebook_get_preferred_height_for_width;
widget_class->size_allocate = gtk_notebook_size_allocate;
widget_class->draw = gtk_notebook_draw;
widget_class->button_press_event = gtk_notebook_button_press;
widget_class->button_release_event = gtk_notebook_button_release;
widget_class->popup_menu = gtk_notebook_popup_menu;
widget_class->enter_notify_event = gtk_notebook_enter_notify;
widget_class->leave_notify_event = gtk_notebook_leave_notify;
widget_class->motion_notify_event = gtk_notebook_motion_notify;
widget_class->grab_notify = gtk_notebook_grab_notify;
widget_class->state_flags_changed = gtk_notebook_state_flags_changed;
widget_class->focus_in_event = gtk_notebook_focus_in;
widget_class->focus_out_event = gtk_notebook_focus_out;
widget_class->focus = gtk_notebook_focus;
widget_class->style_updated = gtk_notebook_style_updated;
widget_class->drag_begin = gtk_notebook_drag_begin;
widget_class->drag_end = gtk_notebook_drag_end;
widget_class->drag_motion = gtk_notebook_drag_motion;
widget_class->drag_leave = gtk_notebook_drag_leave;
widget_class->drag_drop = gtk_notebook_drag_drop;
widget_class->drag_data_get = gtk_notebook_drag_data_get;
widget_class->drag_data_received = gtk_notebook_drag_data_received;
widget_class->drag_failed = gtk_notebook_drag_failed;
widget_class->compute_expand = gtk_notebook_compute_expand;
container_class->add = gtk_notebook_add;
container_class->remove = gtk_notebook_remove;
container_class->forall = gtk_notebook_forall;
container_class->set_focus_child = gtk_notebook_set_focus_child;
container_class->get_child_property = gtk_notebook_get_child_property;
container_class->set_child_property = gtk_notebook_set_child_property;
container_class->child_type = gtk_notebook_child_type;
container_class->get_path_for_child = gtk_notebook_get_path_for_child;
class->switch_page = gtk_notebook_real_switch_page;
class->insert_page = gtk_notebook_real_insert_page;
class->focus_tab = gtk_notebook_focus_tab;
class->select_page = gtk_notebook_select_page;
class->change_current_page = gtk_notebook_change_current_page;
class->move_focus_out = gtk_notebook_move_focus_out;
class->reorder_tab = gtk_notebook_reorder_tab;
class->create_window = gtk_notebook_create_window;
g_object_class_install_property (gobject_class,
PROP_PAGE,
g_param_spec_int ("page",
P_("Page"),
P_("The index of the current page"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_TAB_POS,
g_param_spec_enum ("tab-pos",
P_("Tab Position"),
P_("Which side of the notebook holds the tabs"),
GTK_TYPE_POSITION_TYPE,
GTK_POS_TOP,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_SHOW_TABS,
g_param_spec_boolean ("show-tabs",
P_("Show Tabs"),
P_("Whether tabs should be shown"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_SHOW_BORDER,
g_param_spec_boolean ("show-border",
P_("Show Border"),
P_("Whether the border should be shown"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_SCROLLABLE,
g_param_spec_boolean ("scrollable",
P_("Scrollable"),
P_("If TRUE, scroll arrows are added if there are too many tabs to fit"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_ENABLE_POPUP,
g_param_spec_boolean ("enable-popup",
P_("Enable Popup"),
P_("If TRUE, pressing the right mouse button on the notebook pops up a menu that you can use to go to a page"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkNotebook:group-name:
*
* Group name for tab drag and drop.
*
* Since: 2.24
*/
g_object_class_install_property (gobject_class,
PROP_GROUP_NAME,
g_param_spec_string ("group-name",
P_("Group Name"),
P_("Group name for tab drag and drop"),
NULL,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_TAB_LABEL,
g_param_spec_string ("tab-label",
P_("Tab label"),
P_("The string displayed on the child's tab label"),
NULL,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_MENU_LABEL,
g_param_spec_string ("menu-label",
P_("Menu label"),
P_("The string displayed in the child's menu entry"),
NULL,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_POSITION,
g_param_spec_int ("position",
P_("Position"),
P_("The index of the child in the parent"),
-1, G_MAXINT, 0,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_TAB_EXPAND,
g_param_spec_boolean ("tab-expand",
P_("Tab expand"),
P_("Whether to expand the child's tab"),
FALSE,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_TAB_FILL,
g_param_spec_boolean ("tab-fill",
P_("Tab fill"),
P_("Whether the child's tab should fill the allocated area"),
TRUE,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_REORDERABLE,
g_param_spec_boolean ("reorderable",
P_("Tab reorderable"),
P_("Whether the tab is reorderable by user action"),
FALSE,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_DETACHABLE,
g_param_spec_boolean ("detachable",
P_("Tab detachable"),
P_("Whether the tab is detachable"),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkNotebook:has-secondary-backward-stepper:
*
* The “has-secondary-backward-stepper” property determines whether
* a second backward arrow button is displayed on the opposite end
* of the tab area.
*
* Since: 2.4
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("has-secondary-backward-stepper",
P_("Secondary backward stepper"),
P_("Display a second backward arrow button on the opposite end of the tab area"),
FALSE,
GTK_PARAM_READABLE));
/**
* GtkNotebook:has-secondary-forward-stepper:
*
* The “has-secondary-forward-stepper” property determines whether
* a second forward arrow button is displayed on the opposite end
* of the tab area.
*
* Since: 2.4
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("has-secondary-forward-stepper",
P_("Secondary forward stepper"),
P_("Display a second forward arrow button on the opposite end of the tab area"),
FALSE,
GTK_PARAM_READABLE));
/**
* GtkNotebook:has-backward-stepper:
*
* The “has-backward-stepper” property determines whether
* the standard backward arrow button is displayed.
*
* Since: 2.4
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("has-backward-stepper",
P_("Backward stepper"),
P_("Display the standard backward arrow button"),
TRUE,
GTK_PARAM_READABLE));
/**
* GtkNotebook:has-forward-stepper:
*
* The “has-forward-stepper” property determines whether
* the standard forward arrow button is displayed.
*
* Since: 2.4
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("has-forward-stepper",
P_("Forward stepper"),
P_("Display the standard forward arrow button"),
TRUE,
GTK_PARAM_READABLE));
/**
* GtkNotebook:tab-overlap:
*
* The “tab-overlap” property defines size of tab overlap
* area.
*
* Since: 2.10
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("tab-overlap",
P_("Tab overlap"),
P_("Size of tab overlap area"),
G_MININT,
G_MAXINT,
2,
GTK_PARAM_READABLE));
/**
* GtkNotebook:tab-curvature:
*
* The “tab-curvature” property defines size of tab curvature.
*
* Since: 2.10
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("tab-curvature",
P_("Tab curvature"),
P_("Size of tab curvature"),
0,
G_MAXINT,
1,
GTK_PARAM_READABLE));
/**
* GtkNotebook:arrow-spacing:
*
* The "arrow-spacing" property defines the spacing between the scroll
* arrows and the tabs.
*
* Since: 2.10
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("arrow-spacing",
P_("Arrow spacing"),
P_("Scroll arrow spacing"),
0,
G_MAXINT,
0,
GTK_PARAM_READABLE));
/**
* GtkNotebook:initial-gap:
*
* The "initial-gap" property defines the minimum size for the initial
* gap between the first tab.
*
* Since: 3.2
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("initial-gap",
P_("Initial gap"),
P_("Initial gap before the first tab"),
0,
G_MAXINT,
0,
GTK_PARAM_READABLE));
/**
* GtkNotebook:has-tab-gap:
*
* The "has-tab-gap" property defines whether the active tab is draw
* with a gap at the bottom. When %TRUE the theme engine uses
* gtk_render_extension to draw the active tab. When %FALSE
* gtk_render_background and gtk_render_frame are used.
*
* Since: 3.12
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("has-tab-gap",
P_("Tab gap"),
P_("Active tab is drawn with a gap at the bottom"),
TRUE,
GTK_PARAM_READABLE));
/**
* GtkNotebook::switch-page:
* @notebook: the object which received the signal.
* @page: the new current page
* @page_num: the index of the page
*
* Emitted when the user or a function changes the current page.
*/
notebook_signals[SWITCH_PAGE] =
g_signal_new (I_("switch-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, switch_page),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
notebook_signals[FOCUS_TAB] =
g_signal_new (I_("focus-tab"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, focus_tab),
NULL, NULL,
_gtk_marshal_BOOLEAN__ENUM,
G_TYPE_BOOLEAN, 1,
GTK_TYPE_NOTEBOOK_TAB);
notebook_signals[SELECT_PAGE] =
g_signal_new (I_("select-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, select_page),
NULL, NULL,
_gtk_marshal_BOOLEAN__BOOLEAN,
G_TYPE_BOOLEAN, 1,
G_TYPE_BOOLEAN);
notebook_signals[CHANGE_CURRENT_PAGE] =
g_signal_new (I_("change-current-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, change_current_page),
NULL, NULL,
_gtk_marshal_BOOLEAN__INT,
G_TYPE_BOOLEAN, 1,
G_TYPE_INT);
notebook_signals[MOVE_FOCUS_OUT] =
g_signal_new (I_("move-focus-out"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, move_focus_out),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_DIRECTION_TYPE);
notebook_signals[REORDER_TAB] =
g_signal_new (I_("reorder-tab"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, reorder_tab),
NULL, NULL,
_gtk_marshal_BOOLEAN__ENUM_BOOLEAN,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_DIRECTION_TYPE,
G_TYPE_BOOLEAN);
/**
* GtkNotebook::page-reordered:
* @notebook: the #GtkNotebook
* @child: the child #GtkWidget affected
* @page_num: the new page number for @child
*
* the ::page-reordered signal is emitted in the notebook
* right after a page has been reordered.
*
* Since: 2.10
*/
notebook_signals[PAGE_REORDERED] =
g_signal_new (I_("page-reordered"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, page_reordered),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
/**
* GtkNotebook::page-removed:
* @notebook: the #GtkNotebook
* @child: the child #GtkWidget affected
* @page_num: the @child page number
*
* the ::page-removed signal is emitted in the notebook
* right after a page is removed from the notebook.
*
* Since: 2.10
*/
notebook_signals[PAGE_REMOVED] =
g_signal_new (I_("page-removed"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, page_removed),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
/**
* GtkNotebook::page-added:
* @notebook: the #GtkNotebook
* @child: the child #GtkWidget affected
* @page_num: the new page number for @child
*
* the ::page-added signal is emitted in the notebook
* right after a page is added to the notebook.
*
* Since: 2.10
*/
notebook_signals[PAGE_ADDED] =
g_signal_new (I_("page-added"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, page_added),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
/**
* GtkNotebook::create-window:
* @notebook: the #GtkNotebook emitting the signal
* @page: the tab of @notebook that is being detached
* @x: the X coordinate where the drop happens
* @y: the Y coordinate where the drop happens
*
* The ::create-window signal is emitted when a detachable
* tab is dropped on the root window.
*
* A handler for this signal can create a window containing
* a notebook where the tab will be attached. It is also
* responsible for moving/resizing the window and adding the
* necessary properties to the notebook (e.g. the
* #GtkNotebook:group-name ).
*
* Returns: (transfer none): a #GtkNotebook that @page should be
* added to, or %NULL.
*
* Since: 2.12
*/
notebook_signals[CREATE_WINDOW] =
g_signal_new (I_("create-window"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, create_window),
gtk_object_handled_accumulator, NULL,
_gtk_marshal_OBJECT__OBJECT_INT_INT,
GTK_TYPE_NOTEBOOK, 3,
GTK_TYPE_WIDGET, G_TYPE_INT, G_TYPE_INT);
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_space, 0,
"select-page", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Space, 0,
"select-page", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Home, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_FIRST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Home, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_FIRST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_End, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_LAST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_End, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_LAST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Up, GDK_CONTROL_MASK,
"change-current-page", 1,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Down, GDK_CONTROL_MASK,
"change-current-page", 1,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Up, GDK_CONTROL_MASK | GDK_MOD1_MASK,
"change-current-page", 1,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Down, GDK_CONTROL_MASK | GDK_MOD1_MASK,
"change-current-page", 1,
G_TYPE_INT, 1);
add_arrow_bindings (binding_set, GDK_KEY_Up, GTK_DIR_UP);
add_arrow_bindings (binding_set, GDK_KEY_Down, GTK_DIR_DOWN);
add_arrow_bindings (binding_set, GDK_KEY_Left, GTK_DIR_LEFT);
add_arrow_bindings (binding_set, GDK_KEY_Right, GTK_DIR_RIGHT);
add_reorder_bindings (binding_set, GDK_KEY_Up, GTK_DIR_UP, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Down, GTK_DIR_DOWN, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Left, GTK_DIR_LEFT, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Right, GTK_DIR_RIGHT, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Home, GTK_DIR_LEFT, TRUE);
add_reorder_bindings (binding_set, GDK_KEY_Home, GTK_DIR_UP, TRUE);
add_reorder_bindings (binding_set, GDK_KEY_End, GTK_DIR_RIGHT, TRUE);
add_reorder_bindings (binding_set, GDK_KEY_End, GTK_DIR_DOWN, TRUE);
add_tab_bindings (binding_set, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_NOTEBOOK_ACCESSIBLE);
}
static void
gtk_notebook_init (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GtkStyleContext *context;
gtk_widget_set_can_focus (GTK_WIDGET (notebook), TRUE);
gtk_widget_set_has_window (GTK_WIDGET (notebook), FALSE);
notebook->priv = gtk_notebook_get_instance_private (notebook);
priv = notebook->priv;
priv->cur_page = NULL;
priv->children = NULL;
priv->first_tab = NULL;
priv->focus_tab = NULL;
priv->event_window = NULL;
priv->menu = NULL;
priv->show_tabs = TRUE;
priv->show_border = TRUE;
priv->tab_pos = GTK_POS_TOP;
priv->scrollable = FALSE;
priv->in_child = 0;
priv->click_child = 0;
priv->button = 0;
priv->need_timer = 0;
priv->child_has_focus = FALSE;
priv->focus_out = FALSE;
priv->has_before_previous = 1;
priv->has_before_next = 0;
priv->has_after_previous = 0;
priv->has_after_next = 1;
priv->group = 0;
priv->pressed_button = -1;
priv->dnd_timer = 0;
priv->switch_tab_timer = 0;
priv->source_targets = gtk_target_list_new (notebook_targets,
G_N_ELEMENTS (notebook_targets));
priv->operation = DRAG_OPERATION_NONE;
priv->detached_tab = NULL;
priv->during_detach = FALSE;
priv->has_scrolled = FALSE;
gtk_drag_dest_set (GTK_WIDGET (notebook), 0,
notebook_targets, G_N_ELEMENTS (notebook_targets),
GDK_ACTION_MOVE);
gtk_drag_dest_set_track_motion (GTK_WIDGET (notebook), TRUE);
context = gtk_widget_get_style_context (GTK_WIDGET (notebook));
gtk_style_context_add_class (context, GTK_STYLE_CLASS_NOTEBOOK);
}
static void
gtk_notebook_buildable_init (GtkBuildableIface *iface)
{
iface->add_child = gtk_notebook_buildable_add_child;
}
static void
gtk_notebook_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
GtkNotebook *notebook = GTK_NOTEBOOK (buildable);
if (type && strcmp (type, "tab") == 0)
{
GtkWidget * page;
page = gtk_notebook_get_nth_page (notebook, -1);
/* To set the tab label widget, we must have already a child
* inside the tab container. */
g_assert (page != NULL);
/* warn when Glade tries to overwrite label */
if (gtk_notebook_get_tab_label (notebook, page))
g_warning ("Overriding tab label for notebook");
gtk_notebook_set_tab_label (notebook, page, GTK_WIDGET (child));
}
else if (type && strcmp (type, "action-start") == 0)
{
gtk_notebook_set_action_widget (notebook, GTK_WIDGET (child), GTK_PACK_START);
}
else if (type && strcmp (type, "action-end") == 0)
{
gtk_notebook_set_action_widget (notebook, GTK_WIDGET (child), GTK_PACK_END);
}
else if (!type)
gtk_notebook_append_page (notebook, GTK_WIDGET (child), NULL);
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (notebook, type);
}
static gboolean
gtk_notebook_select_page (GtkNotebook *notebook,
gboolean move_focus)
{
GtkNotebookPrivate *priv = notebook->priv;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && priv->show_tabs)
{
gtk_notebook_page_select (notebook, move_focus);
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_notebook_focus_tab (GtkNotebook *notebook,
GtkNotebookTab type)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && priv->show_tabs)
{
switch (type)
{
case GTK_NOTEBOOK_TAB_FIRST:
list = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, TRUE);
if (list)
gtk_notebook_switch_focus_tab (notebook, list);
break;
case GTK_NOTEBOOK_TAB_LAST:
list = gtk_notebook_search_page (notebook, NULL, STEP_PREV, TRUE);
if (list)
gtk_notebook_switch_focus_tab (notebook, list);
break;
}
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_notebook_change_current_page (GtkNotebook *notebook,
gint offset)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *current = NULL;
if (!priv->show_tabs)
return FALSE;
if (priv->cur_page)
current = g_list_find (priv->children, priv->cur_page);
while (offset != 0)
{
current = gtk_notebook_search_page (notebook, current,
offset < 0 ? STEP_PREV : STEP_NEXT,
TRUE);
if (!current)
{
current = gtk_notebook_search_page (notebook, NULL,
offset < 0 ? STEP_PREV : STEP_NEXT,
TRUE);
}
offset += offset < 0 ? 1 : -1;
}
if (current)
gtk_notebook_switch_page (notebook, current->data);
else
gtk_widget_error_bell (GTK_WIDGET (notebook));
return TRUE;
}
static GtkDirectionType
get_effective_direction (GtkNotebook *notebook,
GtkDirectionType direction)
{
GtkNotebookPrivate *priv = notebook->priv;
/* Remap the directions into the effective direction it would be for a
* GTK_POS_TOP notebook
*/
#define D(rest) GTK_DIR_##rest
static const GtkDirectionType translate_direction[2][4][6] = {
/* LEFT */ {{ D(TAB_FORWARD), D(TAB_BACKWARD), D(LEFT), D(RIGHT), D(UP), D(DOWN) },
/* RIGHT */ { D(TAB_BACKWARD), D(TAB_FORWARD), D(LEFT), D(RIGHT), D(DOWN), D(UP) },
/* TOP */ { D(TAB_FORWARD), D(TAB_BACKWARD), D(UP), D(DOWN), D(LEFT), D(RIGHT) },
/* BOTTOM */ { D(TAB_BACKWARD), D(TAB_FORWARD), D(DOWN), D(UP), D(LEFT), D(RIGHT) }},
/* LEFT */ {{ D(TAB_BACKWARD), D(TAB_FORWARD), D(LEFT), D(RIGHT), D(DOWN), D(UP) },
/* RIGHT */ { D(TAB_FORWARD), D(TAB_BACKWARD), D(LEFT), D(RIGHT), D(UP), D(DOWN) },
/* TOP */ { D(TAB_FORWARD), D(TAB_BACKWARD), D(UP), D(DOWN), D(RIGHT), D(LEFT) },
/* BOTTOM */ { D(TAB_BACKWARD), D(TAB_FORWARD), D(DOWN), D(UP), D(RIGHT), D(LEFT) }},
};
#undef D
int text_dir = gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_RTL ? 1 : 0;
return translate_direction[text_dir][priv->tab_pos][direction];
}
static GtkPositionType
get_effective_tab_pos (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_RTL)
{
switch (priv->tab_pos)
{
case GTK_POS_LEFT:
return GTK_POS_RIGHT;
case GTK_POS_RIGHT:
return GTK_POS_LEFT;
default: ;
}
}
return priv->tab_pos;
}
static gint
get_tab_gap_pos (GtkNotebook *notebook)
{
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
gint gap_side = GTK_POS_BOTTOM;
switch (tab_pos)
{
case GTK_POS_TOP:
gap_side = GTK_POS_BOTTOM;
break;
case GTK_POS_BOTTOM:
gap_side = GTK_POS_TOP;
break;
case GTK_POS_LEFT:
gap_side = GTK_POS_RIGHT;
break;
case GTK_POS_RIGHT:
gap_side = GTK_POS_LEFT;
break;
}
return gap_side;
}
static void
gtk_notebook_move_focus_out (GtkNotebook *notebook,
GtkDirectionType direction_type)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkDirectionType effective_direction = get_effective_direction (notebook, direction_type);
GtkWidget *toplevel;
if (gtk_container_get_focus_child (GTK_CONTAINER (notebook)) && effective_direction == GTK_DIR_UP)
if (focus_tabs_in (notebook))
return;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && effective_direction == GTK_DIR_DOWN)
if (focus_child_in (notebook, GTK_DIR_TAB_FORWARD))
return;
/* At this point, we know we should be focusing out of the notebook entirely. We
* do this by setting a flag, then propagating the focus motion to the notebook.
*/
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (notebook));
if (!gtk_widget_is_toplevel (toplevel))
return;
g_object_ref (notebook);
priv->focus_out = TRUE;
g_signal_emit_by_name (toplevel, "move-focus", direction_type);
priv->focus_out = FALSE;
g_object_unref (notebook);
}
static gint
reorder_tab (GtkNotebook *notebook, GList *position, GList *tab)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *elem;
if (position == tab)
return g_list_position (priv->children, tab);
/* check that we aren't inserting the tab in the
* same relative position, taking packing into account */
elem = (position) ? position->prev : g_list_last (priv->children);
if (elem == tab)
return g_list_position (priv->children, tab);
/* now actually reorder the tab */
if (priv->first_tab == tab)
priv->first_tab = gtk_notebook_search_page (notebook, priv->first_tab,
STEP_NEXT, TRUE);
priv->children = g_list_remove_link (priv->children, tab);
if (!position)
elem = g_list_last (priv->children);
else
{
elem = position->prev;
position->prev = tab;
}
if (elem)
elem->next = tab;
else
priv->children = tab;
tab->prev = elem;
tab->next = position;
return g_list_position (priv->children, tab);
}
static gboolean
gtk_notebook_reorder_tab (GtkNotebook *notebook,
GtkDirectionType direction_type,
gboolean move_to_last)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkDirectionType effective_direction = get_effective_direction (notebook, direction_type);
GList *last, *child;
gint page_num;
if (!gtk_widget_is_focus (GTK_WIDGET (notebook)) || !priv->show_tabs)
return FALSE;
if (!priv->cur_page ||
!priv->cur_page->reorderable)
return FALSE;
if (effective_direction != GTK_DIR_LEFT &&
effective_direction != GTK_DIR_RIGHT)
return FALSE;
if (move_to_last)
{
child = priv->focus_tab;
do
{
last = child;
child = gtk_notebook_search_page (notebook, last,
(effective_direction == GTK_DIR_RIGHT) ? STEP_NEXT : STEP_PREV,
TRUE);
}
while (child);
child = last;
}
else
child = gtk_notebook_search_page (notebook, priv->focus_tab,
(effective_direction == GTK_DIR_RIGHT) ? STEP_NEXT : STEP_PREV,
TRUE);
if (!child || child->data == priv->cur_page)
return FALSE;
if (effective_direction == GTK_DIR_RIGHT)
page_num = reorder_tab (notebook, child->next, priv->focus_tab);
else
page_num = reorder_tab (notebook, child, priv->focus_tab);
gtk_notebook_pages_allocate (notebook);
g_signal_emit (notebook,
notebook_signals[PAGE_REORDERED],
0,
((GtkNotebookPage *) priv->focus_tab->data)->child,
page_num);
return TRUE;
}
/**
* gtk_notebook_new:
*
* Creates a new #GtkNotebook widget with no pages.
* Returns: the newly created #GtkNotebook
*/
GtkWidget*
gtk_notebook_new (void)
{
return g_object_new (GTK_TYPE_NOTEBOOK, NULL);
}
/* Private GObject Methods :
*
* gtk_notebook_set_property
* gtk_notebook_get_property
*/
static void
gtk_notebook_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkNotebook *notebook;
notebook = GTK_NOTEBOOK (object);
switch (prop_id)
{
case PROP_SHOW_TABS:
gtk_notebook_set_show_tabs (notebook, g_value_get_boolean (value));
break;
case PROP_SHOW_BORDER:
gtk_notebook_set_show_border (notebook, g_value_get_boolean (value));
break;
case PROP_SCROLLABLE:
gtk_notebook_set_scrollable (notebook, g_value_get_boolean (value));
break;
case PROP_ENABLE_POPUP:
if (g_value_get_boolean (value))
gtk_notebook_popup_enable (notebook);
else
gtk_notebook_popup_disable (notebook);
break;
case PROP_PAGE:
gtk_notebook_set_current_page (notebook, g_value_get_int (value));
break;
case PROP_TAB_POS:
gtk_notebook_set_tab_pos (notebook, g_value_get_enum (value));
break;
case PROP_GROUP_NAME:
gtk_notebook_set_group_name (notebook, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_notebook_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkNotebook *notebook = GTK_NOTEBOOK (object);
GtkNotebookPrivate *priv = notebook->priv;
switch (prop_id)
{
case PROP_SHOW_TABS:
g_value_set_boolean (value, priv->show_tabs);
break;
case PROP_SHOW_BORDER:
g_value_set_boolean (value, priv->show_border);
break;
case PROP_SCROLLABLE:
g_value_set_boolean (value, priv->scrollable);
break;
case PROP_ENABLE_POPUP:
g_value_set_boolean (value, priv->menu != NULL);
break;
case PROP_PAGE:
g_value_set_int (value, gtk_notebook_get_current_page (notebook));
break;
case PROP_TAB_POS:
g_value_set_enum (value, priv->tab_pos);
break;
case PROP_GROUP_NAME:
g_value_set_string (value, gtk_notebook_get_group_name (notebook));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Private GtkWidget Methods :
*
* gtk_notebook_destroy
* gtk_notebook_map
* gtk_notebook_unmap
* gtk_notebook_realize
* gtk_notebook_size_request
* gtk_notebook_size_allocate
* gtk_notebook_draw
* gtk_notebook_scroll
* gtk_notebook_button_press
* gtk_notebook_button_release
* gtk_notebook_popup_menu
* gtk_notebook_enter_notify
* gtk_notebook_leave_notify
* gtk_notebook_motion_notify
* gtk_notebook_focus_in
* gtk_notebook_focus_out
* gtk_notebook_style_updated
* gtk_notebook_drag_begin
* gtk_notebook_drag_end
* gtk_notebook_drag_failed
* gtk_notebook_drag_motion
* gtk_notebook_drag_drop
* gtk_notebook_drag_data_get
* gtk_notebook_drag_data_received
*/
static void
remove_switch_tab_timer (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->switch_tab_timer)
{
g_source_remove (priv->switch_tab_timer);
priv->switch_tab_timer = 0;
}
}
static void
gtk_notebook_destroy (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
if (priv->action_widget[GTK_PACK_START])
{
gtk_widget_unparent (priv->action_widget[GTK_PACK_START]);
priv->action_widget[GTK_PACK_START] = NULL;
}
if (priv->action_widget[GTK_PACK_END])
{
gtk_widget_unparent (priv->action_widget[GTK_PACK_END]);
priv->action_widget[GTK_PACK_END] = NULL;
}
if (priv->menu)
gtk_notebook_popup_disable (notebook);
if (priv->source_targets)
{
gtk_target_list_unref (priv->source_targets);
priv->source_targets = NULL;
}
remove_switch_tab_timer (notebook);
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->destroy (widget);
}
static gboolean
gtk_notebook_get_event_window_position (GtkNotebook *notebook,
GdkRectangle *rectangle)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation, action_allocation;
GtkWidget *widget = GTK_WIDGET (notebook);
guint border_width = gtk_container_get_border_width (GTK_CONTAINER (notebook));
GtkNotebookPage *visible_page = NULL;
GList *tmp_list;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
gboolean is_rtl;
gint i;
for (tmp_list = priv->children; tmp_list; tmp_list = tmp_list->next)
{
GtkNotebookPage *page = tmp_list->data;
if (gtk_widget_get_visible (page->child))
{
visible_page = page;
break;
}
}
if (priv->show_tabs && visible_page)
{
if (rectangle)
{
gtk_widget_get_allocation (widget, &allocation);
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
rectangle->x = allocation.x + border_width;
rectangle->y = allocation.y + border_width;
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
rectangle->width = allocation.width - 2 * border_width;
rectangle->height = visible_page->requisition.height;
if (tab_pos == GTK_POS_BOTTOM)
rectangle->y += allocation.height - 2 * border_width - rectangle->height;
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i] &&
gtk_widget_get_visible (priv->action_widget[i]))
{
gtk_widget_get_allocation (priv->action_widget[i], &action_allocation);
rectangle->width -= action_allocation.width;
if ((!is_rtl && i == ACTION_WIDGET_START) ||
(is_rtl && i == ACTION_WIDGET_END))
rectangle->x += action_allocation.width;
}
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
rectangle->width = visible_page->requisition.width;
rectangle->height = allocation.height - 2 * border_width;
if (tab_pos == GTK_POS_RIGHT)
rectangle->x += allocation.width - 2 * border_width - rectangle->width;
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i] &&
gtk_widget_get_visible (priv->action_widget[i]))
{
gtk_widget_get_allocation (priv->action_widget[i], &action_allocation);
rectangle->height -= action_allocation.height;
if (i == ACTION_WIDGET_START)
rectangle->y += action_allocation.height;
}
}
break;
default:
g_assert_not_reached ();
}
}
return TRUE;
}
else
{
if (rectangle)
{
rectangle->x = rectangle->y = 0;
rectangle->width = rectangle->height = 10;
}
}
return FALSE;
}
static void
gtk_notebook_map (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children;
gint i;
gtk_widget_set_mapped (widget, TRUE);
if (priv->cur_page &&
gtk_widget_get_visible (priv->cur_page->child) &&
!gtk_widget_get_mapped (priv->cur_page->child))
gtk_widget_map (priv->cur_page->child);
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i] &&
gtk_widget_get_visible (priv->action_widget[i]) &&
gtk_widget_get_child_visible (priv->action_widget[i]) &&
!gtk_widget_get_mapped (priv->action_widget[i]))
gtk_widget_map (priv->action_widget[i]);
}
if (priv->scrollable)
gtk_notebook_pages_allocate (notebook);
else
{
children = priv->children;
while (children)
{
page = children->data;
children = children->next;
if (page->tab_label &&
gtk_widget_get_visible (page->tab_label) &&
!gtk_widget_get_mapped (page->tab_label))
gtk_widget_map (page->tab_label);
}
}
if (gtk_notebook_get_event_window_position (notebook, NULL))
gdk_window_show_unraised (priv->event_window);
}
static void
gtk_notebook_unmap (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
stop_scrolling (notebook);
gtk_widget_set_mapped (widget, FALSE);
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->unmap (widget);
}
static void
gtk_notebook_realize (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
GdkRectangle event_window_pos;
gtk_widget_set_realized (widget, TRUE);
gtk_notebook_get_event_window_position (notebook, &event_window_pos);
window = gtk_widget_get_parent_window (widget);
gtk_widget_set_window (widget, window);
g_object_ref (window);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = event_window_pos.x;
attributes.y = event_window_pos.y;
attributes.width = event_window_pos.width;
attributes.height = event_window_pos.height;
attributes.wclass = GDK_INPUT_ONLY;
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK | GDK_KEY_PRESS_MASK |
GDK_POINTER_MOTION_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y;
priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_widget_register_window (widget, priv->event_window);
}
static void
gtk_notebook_unrealize (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gtk_widget_unregister_window (widget, priv->event_window);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
if (priv->drag_window)
{
gtk_widget_unregister_window (widget, priv->drag_window);
gdk_window_destroy (priv->drag_window);
priv->drag_window = NULL;
}
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->unrealize (widget);
}
static GtkRegionFlags
_gtk_notebook_get_tab_flags (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
gint i = 0, page_num = -1;
GtkRegionFlags flags = 0;
gboolean is_last = FALSE;
GList *pages;
for (pages = priv->children; pages; pages = pages->next)
{
GtkNotebookPage *p = pages->data;
if (!p->tab_label || !gtk_widget_get_visible (p->tab_label))
continue;
i++;
/* No need to keep counting tabs after it */
if (page == p)
{
page_num = i;
is_last = pages->next == NULL;
break;
}
}
if (page_num < 0)
return 0;
if ((page_num) % 2 == 0)
flags |= GTK_REGION_EVEN;
else
flags |= GTK_REGION_ODD;
if (page_num == 1)
flags |= GTK_REGION_FIRST;
if (is_last)
flags |= GTK_REGION_LAST;
return flags;
}
static void
add_tab_position_style_class (GtkStyleContext *context,
gint tab_pos)
{
switch (tab_pos)
{
case GTK_POS_TOP:
gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP);
break;
case GTK_POS_BOTTOM:
gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM);
break;
case GTK_POS_LEFT:
gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEFT);
break;
case GTK_POS_RIGHT:
gtk_style_context_add_class (context, GTK_STYLE_CLASS_RIGHT);
break;
default:
break;
}
}
static GtkStateFlags
notebook_tab_prepare_style_context (GtkNotebook *notebook,
GtkNotebookPage *page,
GtkStyleContext *context,
gboolean use_flags)
{
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
GtkRegionFlags flags = 0;
GtkStateFlags state = gtk_style_context_get_state (context);
if (page != NULL)
{
if (page == notebook->priv->cur_page)
state |= GTK_STATE_FLAG_ACTIVE;
if (page == notebook->priv->prelight_tab)
state |= GTK_STATE_FLAG_PRELIGHT;
if (page->reorderable)
gtk_style_context_add_class (context, "reorderable-page");
}
gtk_style_context_set_state (context, state);
if (use_flags && (page != NULL))
flags = _gtk_notebook_get_tab_flags (notebook, page);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
gtk_style_context_add_region (context, GTK_STYLE_REGION_TAB, flags);
G_GNUC_END_IGNORE_DEPRECATIONS
add_tab_position_style_class (context, tab_pos);
return state;
}
static void
gtk_notebook_get_preferred_tabs_size (GtkNotebook *notebook,
GtkRequisition *requisition)
{
GtkNotebookPrivate *priv;
GtkWidget *widget;
gint tab_width = 0;
gint tab_height = 0;
gint tab_max = 0;
gint padding;
gint i;
gint action_width = 0;
gint action_height = 0;
guint vis_pages = 0;
GList *children;
GtkNotebookPage *page;
GtkRequisition action_widget_requisition[2] = { { 0 }, { 0 } };
GtkRequisition child_requisition;
GtkStyleContext *context;
gint tab_overlap;
gint tab_curvature;
gint arrow_spacing;
gint initial_gap;
gint scroll_arrow_hlength;
gint scroll_arrow_vlength;
priv = notebook->priv;
widget = GTK_WIDGET (notebook);
context = gtk_widget_get_style_context (widget);
gtk_widget_style_get (widget,
"initial-gap", &initial_gap,
"tab-overlap", &tab_overlap,
"tab-curvature", &tab_curvature,
"arrow-spacing", &arrow_spacing,
"scroll-arrow-hlength", &scroll_arrow_hlength,
"scroll-arrow-vlength", &scroll_arrow_vlength,
NULL);
for (children = priv->children; children;
children = children->next)
{
page = children->data;
if (gtk_widget_get_visible (page->child))
{
GtkBorder tab_padding;
GtkStateFlags state;
vis_pages++;
if (!gtk_widget_get_visible (page->tab_label))
gtk_widget_show (page->tab_label);
gtk_widget_get_preferred_size (page->tab_label,
&child_requisition, NULL);
/* Get border/padding for tab */
gtk_style_context_save (context);
state = notebook_tab_prepare_style_context (notebook, page, context, TRUE);
gtk_style_context_get_padding (context, state, &tab_padding);
gtk_style_context_restore (context);
page->requisition.width = child_requisition.width +
tab_padding.left + tab_padding.right;
page->requisition.height = child_requisition.height +
tab_padding.top + tab_padding.bottom;
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
tab_height = MAX (tab_height, page->requisition.height);
tab_max = MAX (tab_max, page->requisition.width);
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
tab_width = MAX (tab_width, page->requisition.width);
tab_max = MAX (tab_max, page->requisition.height);
break;
}
}
else if (gtk_widget_get_visible (page->tab_label))
gtk_widget_hide (page->tab_label);
}
children = priv->children;
if (vis_pages)
{
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
{
gtk_widget_get_preferred_size (priv->action_widget[i],
&action_widget_requisition[i], NULL);
}
}
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (tab_height == 0)
break;
if (priv->scrollable)
tab_height = MAX (tab_height, scroll_arrow_hlength);
tab_height = MAX (tab_height, action_widget_requisition[ACTION_WIDGET_START].height);
tab_height = MAX (tab_height, action_widget_requisition[ACTION_WIDGET_END].height);
padding = 2 * tab_curvature - tab_overlap;
tab_max += padding;
while (children)
{
page = children->data;
children = children->next;
if (!gtk_widget_get_visible (page->child))
continue;
page->requisition.width += padding;
tab_width += page->requisition.width;
page->requisition.height = tab_height;
}
if (priv->scrollable)
tab_width = MIN (tab_width,
tab_max + 2 * (scroll_arrow_hlength + arrow_spacing));
action_width += action_widget_requisition[ACTION_WIDGET_START].width;
action_width += action_widget_requisition[ACTION_WIDGET_END].width;
requisition->width = tab_width + tab_overlap + action_width + 2 * initial_gap;
requisition->height = tab_height;
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (tab_width == 0)
break;
if (priv->scrollable)
tab_width = MAX (tab_width, arrow_spacing + 2 * scroll_arrow_vlength);
tab_width = MAX (tab_width, action_widget_requisition[ACTION_WIDGET_START].width);
tab_width = MAX (tab_width, action_widget_requisition[ACTION_WIDGET_END].width);
padding = 2 * tab_curvature - tab_overlap;
tab_max += padding;
while (children)
{
page = children->data;
children = children->next;
if (!gtk_widget_get_visible (page->child))
continue;
page->requisition.width = tab_width;
page->requisition.height += padding;
tab_height += page->requisition.height;
}
if (priv->scrollable)
tab_height = MIN (tab_height,
tab_max + (2 * scroll_arrow_vlength + arrow_spacing + initial_gap));
action_height += action_widget_requisition[ACTION_WIDGET_START].height;
action_height += action_widget_requisition[ACTION_WIDGET_END].height;
requisition->height = tab_height + tab_overlap + action_height + 2 * initial_gap;
requisition->height = MAX (requisition->height, tab_max + tab_overlap);
requisition->width = tab_width;
break;
default:
g_assert_not_reached ();
requisition->width = 0;
requisition->height = 0;
}
}
else
{
requisition->width = 0;
requisition->height = 0;
}
}
static void
get_padding_and_border (GtkNotebook *notebook,
GtkBorder *border)
{
GtkStyleContext *context;
GtkStateFlags state;
context = gtk_widget_get_style_context (GTK_WIDGET (notebook));
state = gtk_style_context_get_state (context);
gtk_style_context_get_padding (context, state, border);
if (notebook->priv->show_border || notebook->priv->show_tabs)
{
GtkBorder tmp;
gtk_style_context_get_border (context, state, &tmp);
border->top += tmp.top;
border->right += tmp.right;
border->bottom += tmp.bottom;
border->left += tmp.left;
}
}
static void
gtk_notebook_size_request (GtkWidget *widget,
GtkOrientation orientation,
gint size,
gint *minimum,
gint *natural)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children;
gint child_minimum, child_natural;
gboolean switch_page = FALSE;
gint vis_pages;
guint border_width;
*minimum = 0;
*natural = 0;
for (children = priv->children, vis_pages = 0; children;
children = children->next)
{
GtkWidget *parent;
page = children->data;
if (gtk_widget_get_visible (page->child))
{
vis_pages++;
_gtk_widget_get_preferred_size_for_size (page->child,
orientation,
size,
&child_minimum,
&child_natural,
NULL,
NULL);
*minimum = MAX (*minimum, child_minimum);
*natural = MAX (*natural, child_natural);
if (priv->menu && page->menu_label)
{
parent = gtk_widget_get_parent (page->menu_label);
if (parent && !gtk_widget_get_visible (parent))
gtk_widget_show (parent);
}
}
else
{
if (page == priv->cur_page)
switch_page = TRUE;
if (priv->menu && page->menu_label)
{
parent = gtk_widget_get_parent (page->menu_label);
if (parent && gtk_widget_get_visible (parent))
gtk_widget_hide (parent);
}
}
}
if (priv->show_border || priv->show_tabs)
{
GtkBorder notebook_padding;
get_padding_and_border (notebook, &notebook_padding);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum += notebook_padding.left + notebook_padding.right;
*natural += notebook_padding.left + notebook_padding.right;
}
else
{
*minimum += notebook_padding.top + notebook_padding.bottom;
*natural += notebook_padding.top + notebook_padding.bottom;
}
if (priv->show_tabs)
{
GtkRequisition tabs_requisition = { 0, 0 };
gtk_notebook_get_preferred_tabs_size (notebook, &tabs_requisition);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_BOTTOM)
{
*minimum = MAX (*minimum, tabs_requisition.width);
*natural = MAX (*minimum, *natural);
}
else
{
*minimum += tabs_requisition.width;
*natural += tabs_requisition.width;
}
}
else
{
if (priv->tab_pos == GTK_POS_LEFT || priv->tab_pos == GTK_POS_RIGHT)
{
*minimum = MAX (*minimum, tabs_requisition.height);
*natural = MAX (*minimum, *natural);
}
else
{
*minimum += tabs_requisition.height;
*natural += tabs_requisition.height;
}
}
}
else
{
for (children = priv->children; children;
children = children->next)
{
page = children->data;
if (page->tab_label && gtk_widget_get_visible (page->tab_label))
gtk_widget_hide (page->tab_label);
}
}
}
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
*minimum += border_width * 2;
*natural += border_width * 2;
if (switch_page)
{
if (vis_pages)
{
for (children = priv->children; children;
children = children->next)
{
page = children->data;
if (gtk_widget_get_visible (page->child))
{
gtk_notebook_switch_page (notebook, page);
break;
}
}
}
else if (gtk_widget_get_visible (widget))
{
*minimum = border_width * 2;
}
}
if (vis_pages && !priv->cur_page)
{
children = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, TRUE);
if (children)
{
priv->first_tab = children;
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (children));
}
}
}
static void
gtk_notebook_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural)
{
gtk_notebook_size_request (widget, GTK_ORIENTATION_HORIZONTAL, height, minimum, natural);
}
static void
gtk_notebook_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural)
{
gtk_notebook_size_request (widget, GTK_ORIENTATION_VERTICAL, width, minimum, natural);
}
static void
gtk_notebook_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_notebook_size_request (widget, GTK_ORIENTATION_HORIZONTAL, -1, minimum, natural);
}
static void
gtk_notebook_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_notebook_size_request (widget, GTK_ORIENTATION_VERTICAL, -1, minimum, natural);
}
static void
gtk_notebook_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
gboolean is_rtl;
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_realized (widget))
{
GdkRectangle position;
if (gtk_notebook_get_event_window_position (notebook, &position))
{
gdk_window_move_resize (priv->event_window,
position.x, position.y,
position.width, position.height);
if (gtk_widget_get_mapped (GTK_WIDGET (notebook)))
gdk_window_show_unraised (priv->event_window);
}
else
gdk_window_hide (priv->event_window);
}
if (priv->children)
{
gint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
GtkNotebookPage *page;
GtkAllocation child_allocation;
GList *children;
gint i;
child_allocation.x = allocation->x + border_width;
child_allocation.y = allocation->y + border_width;
child_allocation.width = MAX (1, allocation->width - border_width * 2);
child_allocation.height = MAX (1, allocation->height - border_width * 2);
if (priv->show_tabs || priv->show_border)
{
GtkBorder padding;
get_padding_and_border (notebook, &padding);
child_allocation.x += padding.left;
child_allocation.y += padding.top;
child_allocation.width = MAX (1, child_allocation.width - padding.left - padding.right);
child_allocation.height = MAX (1, child_allocation.height - padding.top - padding.bottom);
if (priv->show_tabs && priv->children && priv->cur_page)
{
switch (tab_pos)
{
case GTK_POS_TOP:
child_allocation.y += priv->cur_page->requisition.height;
/* fall thru */
case GTK_POS_BOTTOM:
child_allocation.height =
MAX (1, child_allocation.height -
priv->cur_page->requisition.height);
break;
case GTK_POS_LEFT:
child_allocation.x += priv->cur_page->requisition.width;
/* fall thru */
case GTK_POS_RIGHT:
child_allocation.width =
MAX (1, child_allocation.width -
priv->cur_page->requisition.width);
break;
}
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
GtkAllocation widget_allocation;
GtkRequisition requisition;
if (!priv->action_widget[i])
continue;
widget_allocation.x = allocation->x + border_width;
widget_allocation.y = allocation->y + border_width;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
gtk_widget_get_preferred_size (priv->action_widget[i],
&requisition, NULL);
switch (tab_pos)
{
case GTK_POS_BOTTOM:
widget_allocation.y += allocation->height - 2 * border_width - priv->cur_page->requisition.height;
/* fall through */
case GTK_POS_TOP:
widget_allocation.width = requisition.width;
widget_allocation.height = priv->cur_page->requisition.height - padding.top;
if ((i == ACTION_WIDGET_START && is_rtl) ||
(i == ACTION_WIDGET_END && !is_rtl))
widget_allocation.x += allocation->width - 2 * border_width - requisition.width;
/* no fall through */
break;
case GTK_POS_RIGHT:
widget_allocation.x += allocation->width - 2 * border_width - priv->cur_page->requisition.width;
/* fall through */
case GTK_POS_LEFT:
widget_allocation.height = requisition.height;
widget_allocation.width = priv->cur_page->requisition.width - padding.left;
if (i == ACTION_WIDGET_END)
widget_allocation.y += allocation->height - 2 * border_width - requisition.height;
/* no fall through */
break;
}
gtk_widget_size_allocate (priv->action_widget[i], &widget_allocation);
}
}
}
children = priv->children;
while (children)
{
page = children->data;
children = children->next;
if (gtk_widget_get_visible (page->child))
gtk_widget_size_allocate (page->child, &child_allocation);
}
gtk_notebook_pages_allocate (notebook);
}
}
static gboolean
gtk_notebook_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation;
GdkWindow *window;
gint i;
gtk_widget_get_allocation (widget, &allocation);
window = gtk_widget_get_window (widget);
if (gtk_cairo_should_draw_window (cr, window))
{
cairo_save (cr);
cairo_translate (cr, -allocation.x, -allocation.y);
gtk_notebook_paint (widget, cr);
cairo_restore (cr);
if (priv->show_tabs)
{
GtkNotebookPage *page;
GList *pages;
for (pages = priv->children; pages; pages = pages->next)
{
page = GTK_NOTEBOOK_PAGE (pages);
if (gtk_widget_get_parent (page->tab_label) == widget)
gtk_container_propagate_draw (GTK_CONTAINER (notebook),
page->tab_label, cr);
}
}
if (priv->cur_page)
gtk_container_propagate_draw (GTK_CONTAINER (notebook),
priv->cur_page->child,
cr);
if (priv->show_tabs)
{
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
gtk_container_propagate_draw (GTK_CONTAINER (notebook),
priv->action_widget[i], cr);
}
}
}
if (priv->cur_page && priv->operation == DRAG_OPERATION_REORDER &&
gtk_cairo_should_draw_window (cr, priv->drag_window))
{
cairo_save (cr);
gtk_cairo_transform_to_window (cr, widget, priv->drag_window);
gtk_notebook_draw_tab (notebook,
priv->cur_page,
cr, FALSE);
cairo_restore (cr);
gtk_container_propagate_draw (GTK_CONTAINER (notebook),
priv->cur_page->tab_label, cr);
}
return FALSE;
}
static gboolean
gtk_notebook_show_arrows (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
gboolean show_arrow = FALSE;
GList *children;
if (!priv->scrollable)
return FALSE;
children = priv->children;
while (children)
{
GtkNotebookPage *page = children->data;
if (page->tab_label && !gtk_widget_get_child_visible (page->tab_label))
show_arrow = TRUE;
children = children->next;
}
return show_arrow;
}
static void
gtk_notebook_get_arrow_rect (GtkNotebook *notebook,
GdkRectangle *rectangle,
GtkNotebookArrow arrow)
{
GtkNotebookPrivate *priv = notebook->priv;
GdkRectangle event_window_pos;
gboolean before = ARROW_IS_BEFORE (arrow);
gboolean left = ARROW_IS_LEFT (arrow);
gint initial_gap;
if (gtk_notebook_get_event_window_position (notebook, &event_window_pos))
{
gint scroll_arrow_hlength;
gint scroll_arrow_vlength;
gtk_widget_style_get (GTK_WIDGET (notebook),
"scroll-arrow-hlength", &scroll_arrow_hlength,
"scroll-arrow-vlength", &scroll_arrow_vlength,
"initial-gap", &initial_gap,
NULL);
switch (priv->tab_pos)
{
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
rectangle->width = scroll_arrow_vlength;
rectangle->height = scroll_arrow_vlength + initial_gap;
if ((before && (priv->has_before_previous != priv->has_before_next)) ||
(!before && (priv->has_after_previous != priv->has_after_next)))
rectangle->x = event_window_pos.x + (event_window_pos.width - rectangle->width) / 2;
else if (left)
rectangle->x = event_window_pos.x + event_window_pos.width / 2 - rectangle->width;
else
rectangle->x = event_window_pos.x + event_window_pos.width / 2;
rectangle->y = event_window_pos.y + initial_gap;
if (!before)
rectangle->y += event_window_pos.height - rectangle->height - 2 * initial_gap;
break;
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
rectangle->width = scroll_arrow_hlength + initial_gap;
rectangle->height = scroll_arrow_hlength;
if (before)
{
if (left || !priv->has_before_previous)
rectangle->x = event_window_pos.x + initial_gap;
else
rectangle->x = event_window_pos.x + initial_gap + rectangle->width;
}
else
{
if (!left || !priv->has_after_next)
rectangle->x = event_window_pos.x + event_window_pos.width - rectangle->width;
else
rectangle->x = event_window_pos.x + event_window_pos.width - 2 * rectangle->width;
}
rectangle->y = floor ((gdouble)event_window_pos.y + (event_window_pos.height - rectangle->height) / 2.0 + 0.5);
break;
}
}
}
static GtkNotebookArrow
gtk_notebook_get_arrow (GtkNotebook *notebook,
gint x,
gint y)
{
GtkNotebookPrivate *priv = notebook->priv;
GdkRectangle arrow_rect;
GdkRectangle event_window_pos;
gint i;
gint x0, y0;
GtkNotebookArrow arrow[4];
arrow[0] = priv->has_before_previous ? ARROW_LEFT_BEFORE : ARROW_NONE;
arrow[1] = priv->has_before_next ? ARROW_RIGHT_BEFORE : ARROW_NONE;
arrow[2] = priv->has_after_previous ? ARROW_LEFT_AFTER : ARROW_NONE;
arrow[3] = priv->has_after_next ? ARROW_RIGHT_AFTER : ARROW_NONE;
if (gtk_notebook_show_arrows (notebook))
{
gtk_notebook_get_event_window_position (notebook, &event_window_pos);
for (i = 0; i < 4; i++)
{
if (arrow[i] == ARROW_NONE)
continue;
gtk_notebook_get_arrow_rect (notebook, &arrow_rect, arrow[i]);
x0 = x - arrow_rect.x;
y0 = y - arrow_rect.y;
if (y0 >= 0 && y0 < arrow_rect.height &&
x0 >= 0 && x0 < arrow_rect.width)
return arrow[i];
}
}
return ARROW_NONE;
}
static void
gtk_notebook_do_arrow (GtkNotebook *notebook,
GtkNotebookArrow arrow)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget = GTK_WIDGET (notebook);
gboolean is_rtl, left;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
left = (ARROW_IS_LEFT (arrow) && !is_rtl) ||
(!ARROW_IS_LEFT (arrow) && is_rtl);
if (!priv->focus_tab ||
gtk_notebook_search_page (notebook, priv->focus_tab,
left ? STEP_PREV : STEP_NEXT,
TRUE))
{
gtk_notebook_change_current_page (notebook, left ? -1 : 1);
gtk_widget_grab_focus (widget);
}
}
static gboolean
gtk_notebook_arrow_button_press (GtkNotebook *notebook,
GtkNotebookArrow arrow,
gint button)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget = GTK_WIDGET (notebook);
gboolean is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
gboolean left = (ARROW_IS_LEFT (arrow) && !is_rtl) ||
(!ARROW_IS_LEFT (arrow) && is_rtl);
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
priv->button = button;
priv->click_child = arrow;
if (button == GDK_BUTTON_PRIMARY)
{
gtk_notebook_do_arrow (notebook, arrow);
gtk_notebook_set_scroll_timer (notebook);
}
else if (button == GDK_BUTTON_MIDDLE)
gtk_notebook_page_select (notebook, TRUE);
else if (button == GDK_BUTTON_SECONDARY)
gtk_notebook_switch_focus_tab (notebook,
gtk_notebook_search_page (notebook,
NULL,
left ? STEP_NEXT : STEP_PREV,
TRUE));
gtk_notebook_redraw_arrows (notebook);
return TRUE;
}
static gboolean
get_widget_coordinates (GtkWidget *widget,
GdkEvent *event,
gint *x,
gint *y)
{
GdkWindow *window = ((GdkEventAny *)event)->window;
gdouble tx, ty;
if (!gdk_event_get_coords (event, &tx, &ty))
return FALSE;
while (window && window != gtk_widget_get_window (widget))
{
gint window_x, window_y;
gdk_window_get_position (window, &window_x, &window_y);
tx += window_x;
ty += window_y;
window = gdk_window_get_parent (window);
}
if (window)
{
*x = tx;
*y = ty;
return TRUE;
}
else
return FALSE;
}
static GList*
get_tab_at_pos (GtkNotebook *notebook, gint x, gint y)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children;
children = priv->children;
while (children)
{
page = children->data;
if (gtk_widget_get_visible (page->child) &&
page->tab_label && gtk_widget_get_mapped (page->tab_label) &&
(x >= page->allocation.x) &&
(y >= page->allocation.y) &&
(x <= (page->allocation.x + page->allocation.width)) &&
(y <= (page->allocation.y + page->allocation.height)))
return children;
children = children->next;
}
return NULL;
}
static gboolean
gtk_notebook_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *tab;
GtkNotebookArrow arrow;
gint x, y;
if (event->type != GDK_BUTTON_PRESS || !priv->children ||
priv->button)
return FALSE;
if (!get_widget_coordinates (widget, (GdkEvent *)event, &x, &y))
return FALSE;
arrow = gtk_notebook_get_arrow (notebook, x, y);
if (arrow)
return gtk_notebook_arrow_button_press (notebook, arrow, event->button);
if (priv->menu && gdk_event_triggers_context_menu ((GdkEvent *) event))
{
gtk_menu_popup (GTK_MENU (priv->menu), NULL, NULL,
NULL, NULL, 3, event->time);
return TRUE;
}
if (event->button != GDK_BUTTON_PRIMARY)
return FALSE;
priv->button = event->button;
if ((tab = get_tab_at_pos (notebook, x, y)) != NULL)
{
gboolean page_changed, was_focus;
page = tab->data;
page_changed = page != priv->cur_page;
was_focus = gtk_widget_is_focus (widget);
gtk_notebook_switch_focus_tab (notebook, tab);
gtk_widget_grab_focus (widget);
if (page_changed && !was_focus)
gtk_widget_child_focus (page->child, GTK_DIR_TAB_FORWARD);
/* save press to possibly begin a drag */
if (page->reorderable || page->detachable)
{
priv->during_detach = FALSE;
priv->during_reorder = FALSE;
priv->pressed_button = event->button;
priv->mouse_x = x;
priv->mouse_y = y;
priv->drag_begin_x = priv->mouse_x;
priv->drag_begin_y = priv->mouse_y;
priv->drag_offset_x = priv->drag_begin_x - page->allocation.x;
priv->drag_offset_y = priv->drag_begin_y - page->allocation.y;
}
}
return TRUE;
}
static void
popup_position_func (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer data)
{
GtkNotebook *notebook = data;
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation;
GtkWidget *w;
GtkRequisition requisition;
if (priv->focus_tab)
{
GtkNotebookPage *page;
page = priv->focus_tab->data;
w = page->tab_label;
}
else
{
w = GTK_WIDGET (notebook);
}
gdk_window_get_origin (gtk_widget_get_window (w), x, y);
gtk_widget_get_allocation (w, &allocation);
gtk_widget_get_preferred_size (GTK_WIDGET (menu),
&requisition, NULL);
if (gtk_widget_get_direction (w) == GTK_TEXT_DIR_RTL)
*x += allocation.x + allocation.width - requisition.width;
else
*x += allocation.x;
*y += allocation.y + allocation.height;
*push_in = FALSE;
}
static gboolean
gtk_notebook_popup_menu (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
if (priv->menu)
{
gtk_menu_popup (GTK_MENU (priv->menu), NULL, NULL,
popup_position_func, notebook,
0, gtk_get_current_event_time ());
gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->menu), FALSE);
return TRUE;
}
return FALSE;
}
static void
stop_scrolling (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->timer)
{
g_source_remove (priv->timer);
priv->timer = 0;
priv->need_timer = FALSE;
}
priv->click_child = 0;
priv->button = 0;
gtk_notebook_redraw_arrows (notebook);
}
static GList*
get_drop_position (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children, *last_child;
GtkNotebookPage *page;
gboolean is_rtl;
gint x, y;
x = priv->mouse_x;
y = priv->mouse_y;
is_rtl = gtk_widget_get_direction ((GtkWidget *) notebook) == GTK_TEXT_DIR_RTL;
children = priv->children;
last_child = NULL;
while (children)
{
page = children->data;
if ((priv->operation != DRAG_OPERATION_REORDER || page != priv->cur_page) &&
gtk_widget_get_visible (page->child) &&
page->tab_label &&
gtk_widget_get_mapped (page->tab_label))
{
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (!is_rtl)
{
if (PAGE_MIDDLE_X (page) > x)
return children;
}
else
{
if (PAGE_MIDDLE_X (page) < x)
return children;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (PAGE_MIDDLE_Y (page) > y)
return children;
break;
}
last_child = children->next;
}
children = children->next;
}
return last_child;
}
static void
show_drag_window (GtkNotebook *notebook,
GtkNotebookPrivate *priv,
GtkNotebookPage *page,
GdkDevice *device)
{
GtkWidget *widget = GTK_WIDGET (notebook);
if (!priv->drag_window)
{
GdkWindowAttr attributes;
guint attributes_mask;
GdkRGBA transparent = {0, 0, 0, 0};
attributes.x = page->allocation.x;
attributes.y = page->allocation.y;
attributes.width = page->allocation.width;
attributes.height = page->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
priv->drag_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes,
attributes_mask);
gtk_widget_register_window (widget, priv->drag_window);
gdk_window_set_background_rgba (priv->drag_window, &transparent);
}
g_object_ref (page->tab_label);
gtk_widget_unparent (page->tab_label);
gtk_widget_set_parent_window (page->tab_label, priv->drag_window);
gtk_widget_set_parent (page->tab_label, widget);
g_object_unref (page->tab_label);
gdk_window_show (priv->drag_window);
/* the grab will dissapear when the window is hidden */
gdk_device_grab (device, priv->drag_window,
GDK_OWNERSHIP_WINDOW, FALSE,
GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
NULL, GDK_CURRENT_TIME);
}
/* This function undoes the reparenting that happens both when drag_window
* is shown for reordering and when the DnD icon is shown for detaching
*/
static void
hide_drag_window (GtkNotebook *notebook,
GtkNotebookPrivate *priv,
GtkNotebookPage *page)
{
GtkWidget *widget = GTK_WIDGET (notebook);
GtkWidget *parent = gtk_widget_get_parent (page->tab_label);
if (gtk_widget_get_window (page->tab_label) != gtk_widget_get_window (widget) ||
!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
{
g_object_ref (page->tab_label);
if (GTK_IS_WINDOW (parent)) /* parent widget is the drag window */
gtk_container_remove (GTK_CONTAINER (parent), page->tab_label);
else
gtk_widget_unparent (page->tab_label);
gtk_widget_set_parent (page->tab_label, widget);
g_object_unref (page->tab_label);
}
if (priv->drag_window &&
gdk_window_is_visible (priv->drag_window))
gdk_window_hide (priv->drag_window);
}
static void
gtk_notebook_stop_reorder (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
if (priv->operation == DRAG_OPERATION_DETACH)
page = priv->detached_tab;
else
page = priv->cur_page;
if (!page || !page->tab_label)
return;
priv->pressed_button = -1;
if (page->reorderable || page->detachable)
{
if (priv->during_reorder)
{
gint old_page_num, page_num, i;
GList *element;
element = get_drop_position (notebook);
old_page_num = g_list_position (priv->children, priv->focus_tab);
page_num = reorder_tab (notebook, element, priv->focus_tab);
gtk_notebook_child_reordered (notebook, page);
if (priv->has_scrolled || old_page_num != page_num)
{
for (element = priv->children, i = 0; element; element = element->next, i++)
{
if (MIN (old_page_num, page_num) <= i && i <= MAX (old_page_num, page_num))
gtk_widget_child_notify (((GtkNotebookPage *) element->data)->child, "position");
}
g_signal_emit (notebook,
notebook_signals[PAGE_REORDERED], 0,
page->child, page_num);
}
priv->has_scrolled = FALSE;
priv->during_reorder = FALSE;
}
hide_drag_window (notebook, priv, page);
priv->operation = DRAG_OPERATION_NONE;
gtk_notebook_pages_allocate (notebook);
if (priv->dnd_timer)
{
g_source_remove (priv->dnd_timer);
priv->dnd_timer = 0;
}
}
}
static gboolean
gtk_notebook_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkNotebook *notebook;
GtkNotebookPrivate *priv;
if (event->type != GDK_BUTTON_RELEASE)
return FALSE;
notebook = GTK_NOTEBOOK (widget);
priv = notebook->priv;
if (!priv->during_detach &&
priv->cur_page &&
priv->cur_page->reorderable &&
event->button == priv->pressed_button)
gtk_notebook_stop_reorder (notebook);
if (event->button == priv->button)
{
stop_scrolling (notebook);
return TRUE;
}
else
return FALSE;
}
static void
update_prelight_tab (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->prelight_tab == page)
return;
if (priv->prelight_tab && priv->prelight_tab->tab_label)
gtk_style_context_remove_class (gtk_widget_get_style_context (priv->prelight_tab->tab_label),
"prelight-page");
if (page && page->tab_label)
gtk_style_context_add_class (gtk_widget_get_style_context (page->tab_label),
"prelight-page");
priv->prelight_tab = page;
}
static void
tab_prelight (GtkNotebook *notebook,
GdkEvent *event)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *tab;
gint x, y;
if (get_widget_coordinates (GTK_WIDGET (notebook), (GdkEvent *)event, &x, &y))
{
tab = get_tab_at_pos (notebook, x, y);
if ((tab == NULL && priv->prelight_tab != NULL) ||
(tab != NULL && tab->data != priv->prelight_tab))
{
update_prelight_tab (notebook, tab == NULL ? NULL : tab->data);
gtk_notebook_redraw_tabs (notebook);
}
}
}
static gboolean
gtk_notebook_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
tab_prelight (notebook, (GdkEvent *)event);
return FALSE;
}
static gboolean
gtk_notebook_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gint x, y;
if (get_widget_coordinates (widget, (GdkEvent *)event, &x, &y))
{
if (priv->prelight_tab != NULL)
{
tab_prelight (notebook, (GdkEvent *)event);
}
if (priv->in_child)
{
priv->in_child = 0;
gtk_notebook_redraw_arrows (notebook);
}
}
return FALSE;
}
static GtkNotebookPointerPosition
get_pointer_position (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget = GTK_WIDGET (notebook);
gint wx, wy, width, height;
gboolean is_rtl;
if (!priv->scrollable)
return POINTER_BETWEEN;
gdk_window_get_position (priv->event_window, &wx, &wy);
width = gdk_window_get_width (priv->event_window);
height = gdk_window_get_height (priv->event_window);
if (priv->tab_pos == GTK_POS_TOP ||
priv->tab_pos == GTK_POS_BOTTOM)
{
gint x;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
x = priv->mouse_x - wx;
if (x > width - SCROLL_THRESHOLD)
return (is_rtl) ? POINTER_BEFORE : POINTER_AFTER;
else if (x < SCROLL_THRESHOLD)
return (is_rtl) ? POINTER_AFTER : POINTER_BEFORE;
else
return POINTER_BETWEEN;
}
else
{
gint y;
y = priv->mouse_y - wy;
if (y > height - SCROLL_THRESHOLD)
return POINTER_AFTER;
else if (y < SCROLL_THRESHOLD)
return POINTER_BEFORE;
else
return POINTER_BETWEEN;
}
}
static gboolean
scroll_notebook_timer (gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPointerPosition pointer_position;
GList *element, *first_tab;
pointer_position = get_pointer_position (notebook);
element = get_drop_position (notebook);
reorder_tab (notebook, element, priv->focus_tab);
first_tab = gtk_notebook_search_page (notebook, priv->first_tab,
(pointer_position == POINTER_BEFORE) ? STEP_PREV : STEP_NEXT,
TRUE);
if (first_tab && priv->cur_page)
{
priv->first_tab = first_tab;
gtk_notebook_pages_allocate (notebook);
gdk_window_move_resize (priv->drag_window,
priv->drag_window_x,
priv->drag_window_y,
priv->cur_page->allocation.width,
priv->cur_page->allocation.height);
gdk_window_raise (priv->drag_window);
}
return TRUE;
}
static gboolean
check_threshold (GtkNotebook *notebook,
gint current_x,
gint current_y)
{
GtkNotebookPrivate *priv = notebook->priv;
gint dnd_threshold;
GdkRectangle rectangle = { 0, }; /* shut up gcc */
GtkSettings *settings;
settings = gtk_widget_get_settings (GTK_WIDGET (notebook));
g_object_get (G_OBJECT (settings), "gtk-dnd-drag-threshold", &dnd_threshold, NULL);
/* we want a large threshold */
dnd_threshold *= DND_THRESHOLD_MULTIPLIER;
gdk_window_get_position (priv->event_window, &rectangle.x, &rectangle.y);
rectangle.width = gdk_window_get_width (priv->event_window);
rectangle.height = gdk_window_get_height (priv->event_window);
rectangle.x -= dnd_threshold;
rectangle.width += 2 * dnd_threshold;
rectangle.y -= dnd_threshold;
rectangle.height += 2 * dnd_threshold;
return (current_x < rectangle.x ||
current_x > rectangle.x + rectangle.width ||
current_y < rectangle.y ||
current_y > rectangle.y + rectangle.height);
}
static gboolean
gtk_notebook_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GtkNotebookArrow arrow;
GtkNotebookPointerPosition pointer_position;
gint x_win, y_win;
page = priv->cur_page;
if (!page)
return FALSE;
if (!(event->state & GDK_BUTTON1_MASK) &&
priv->pressed_button != -1)
{
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
if (event->time < priv->timestamp + MSECS_BETWEEN_UPDATES)
return FALSE;
priv->timestamp = event->time;
tab_prelight (notebook, (GdkEvent *)event);
/* While animating the move, event->x is relative to the flying tab
* (priv->drag_window has a pointer grab), but we need coordinates relative to
* the notebook widget.
*/
gdk_window_get_origin (gtk_widget_get_window (widget), &x_win, &y_win);
priv->mouse_x = event->x_root - x_win;
priv->mouse_y = event->y_root - y_win;
arrow = gtk_notebook_get_arrow (notebook, priv->mouse_x, priv->mouse_y);
if (arrow != priv->in_child)
{
priv->in_child = arrow;
gtk_notebook_redraw_arrows (notebook);
}
if (priv->pressed_button == -1)
return FALSE;
if (page->detachable &&
check_threshold (notebook, priv->mouse_x, priv->mouse_y))
{
priv->detached_tab = priv->cur_page;
priv->during_detach = TRUE;
gtk_drag_begin_with_coordinates (widget, priv->source_targets, GDK_ACTION_MOVE,
priv->pressed_button, (GdkEvent*) event,
priv->drag_begin_x, priv->drag_begin_y);
return TRUE;
}
if (page->reorderable &&
(priv->during_reorder ||
gtk_drag_check_threshold (widget, priv->drag_begin_x, priv->drag_begin_y, priv->mouse_x, priv->mouse_y)))
{
priv->during_reorder = TRUE;
pointer_position = get_pointer_position (notebook);
if (event->window == priv->drag_window &&
pointer_position != POINTER_BETWEEN &&
gtk_notebook_show_arrows (notebook))
{
/* scroll tabs */
if (!priv->dnd_timer)
{
priv->has_scrolled = TRUE;
priv->dnd_timer = gdk_threads_add_timeout (TIMEOUT_REPEAT * SCROLL_DELAY_FACTOR,
scroll_notebook_timer,
(gpointer) notebook);
g_source_set_name_by_id (priv->dnd_timer, "[gtk+] scroll_notebook_timer");
}
}
else
{
if (priv->dnd_timer)
{
g_source_remove (priv->dnd_timer);
priv->dnd_timer = 0;
}
}
if (event->window == priv->drag_window ||
priv->operation != DRAG_OPERATION_REORDER)
{
/* the drag operation is beginning, create the window */
if (priv->operation != DRAG_OPERATION_REORDER)
{
priv->operation = DRAG_OPERATION_REORDER;
show_drag_window (notebook, priv, page, event->device);
}
gtk_notebook_pages_allocate (notebook);
gdk_window_move_resize (priv->drag_window,
priv->drag_window_x,
priv->drag_window_y,
page->allocation.width,
page->allocation.height);
gtk_notebook_redraw_tabs_junction (notebook);
}
}
return TRUE;
}
static void
gtk_notebook_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
if (!was_grabbed)
{
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
}
static void
gtk_notebook_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
if (!gtk_widget_is_sensitive (widget))
stop_scrolling (GTK_NOTEBOOK (widget));
}
static gboolean
gtk_notebook_focus_in (GtkWidget *widget,
GdkEventFocus *event)
{
gtk_notebook_redraw_tabs (GTK_NOTEBOOK (widget));
return FALSE;
}
static gboolean
gtk_notebook_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
gtk_notebook_redraw_tabs (GTK_NOTEBOOK (widget));
return FALSE;
}
static void
gtk_notebook_style_updated (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gboolean has_before_previous;
gboolean has_before_next;
gboolean has_after_previous;
gboolean has_after_next;
gtk_widget_style_get (widget,
"has-backward-stepper", &has_before_previous,
"has-secondary-forward-stepper", &has_before_next,
"has-secondary-backward-stepper", &has_after_previous,
"has-forward-stepper", &has_after_next,
NULL);
priv->has_before_previous = has_before_previous;
priv->has_before_next = has_before_next;
priv->has_after_previous = has_after_previous;
priv->has_after_next = has_after_next;
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->style_updated (widget);
}
static gboolean
on_drag_icon_draw (GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
GtkWidget *notebook, *child;
GtkRequisition requisition;
GtkStyleContext *context;
gboolean has_tab_gap;
notebook = GTK_WIDGET (data);
child = gtk_bin_get_child (GTK_BIN (widget));
context = gtk_widget_get_style_context (widget);
gtk_style_context_save (context);
notebook_tab_prepare_style_context (GTK_NOTEBOOK (notebook), NULL, context, FALSE);
gtk_widget_get_preferred_size (widget,
&requisition, NULL);
gtk_widget_style_get (GTK_WIDGET (notebook),
"has-tab-gap", &has_tab_gap,
NULL);
if (has_tab_gap)
{
gint gap_pos;
gap_pos = get_tab_gap_pos (GTK_NOTEBOOK (notebook));
gtk_render_extension (context, cr, 0, 0,
requisition.width, requisition.height,
gap_pos);
}
else
{
gtk_render_background (context, cr, 0, 0,
requisition.width,
requisition.height);
gtk_render_frame (context, cr, 0, 0,
requisition.width,
requisition.height);
}
if (child)
gtk_container_propagate_draw (GTK_CONTAINER (widget), child, cr);
gtk_style_context_restore (context);
return TRUE;
}
static void
gtk_notebook_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *tab_label;
if (priv->dnd_timer)
{
g_source_remove (priv->dnd_timer);
priv->dnd_timer = 0;
}
g_assert (priv->cur_page != NULL);
priv->operation = DRAG_OPERATION_DETACH;
gtk_notebook_pages_allocate (notebook);
tab_label = priv->detached_tab->tab_label;
hide_drag_window (notebook, priv, priv->cur_page);
g_object_ref (tab_label);
gtk_widget_unparent (tab_label);
priv->dnd_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_screen (GTK_WINDOW (priv->dnd_window),
gtk_widget_get_screen (widget));
gtk_container_add (GTK_CONTAINER (priv->dnd_window), tab_label);
gtk_widget_set_size_request (priv->dnd_window,
priv->detached_tab->allocation.width,
priv->detached_tab->allocation.height);
g_object_unref (tab_label);
g_signal_connect (G_OBJECT (priv->dnd_window), "draw",
G_CALLBACK (on_drag_icon_draw), notebook);
gtk_drag_set_icon_widget (context, priv->dnd_window, -2, -2);
g_object_set_data (G_OBJECT (priv->dnd_window), "drag-context", context);
}
static void
gtk_notebook_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gtk_notebook_stop_reorder (notebook);
if (priv->detached_tab)
gtk_notebook_switch_page (notebook, priv->detached_tab);
_gtk_bin_set_child (GTK_BIN (priv->dnd_window), NULL);
gtk_widget_destroy (priv->dnd_window);
priv->dnd_window = NULL;
priv->operation = DRAG_OPERATION_NONE;
}
static GtkNotebook *
gtk_notebook_create_window (GtkNotebook *notebook,
GtkWidget *page,
gint x,
gint y)
{
return NULL;
}
static gboolean
gtk_notebook_drag_failed (GtkWidget *widget,
GdkDragContext *context,
GtkDragResult result)
{
if (result == GTK_DRAG_RESULT_NO_TARGET)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebook *dest_notebook = NULL;
gint x, y;
gdk_device_get_position (gdk_drag_context_get_device (context),
NULL, &x, &y);
g_signal_emit (notebook, notebook_signals[CREATE_WINDOW], 0,
priv->detached_tab->child, x, y, &dest_notebook);
if (dest_notebook)
do_detach_tab (notebook, dest_notebook, priv->detached_tab->child, 0, 0);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_notebook_switch_tab_timeout (gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GList *switch_tab;
priv->switch_tab_timer = 0;
switch_tab = priv->switch_tab;
priv->switch_tab = NULL;
if (switch_tab)
{
/* FIXME: hack, we don't want the
* focus to move fom the source widget
*/
priv->child_has_focus = FALSE;
gtk_notebook_switch_focus_tab (notebook, switch_tab);
}
return FALSE;
}
static gboolean
gtk_notebook_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation;
GdkRectangle position;
GtkNotebookArrow arrow;
GdkAtom target, tab_target;
GList *tab;
gboolean retval = FALSE;
gtk_widget_get_allocation (widget, &allocation);
arrow = gtk_notebook_get_arrow (notebook,
x + allocation.x,
y + allocation.y);
if (arrow)
{
priv->click_child = arrow;
gtk_notebook_set_scroll_timer (notebook);
gdk_drag_status (context, 0, time);
retval = TRUE;
goto out;
}
stop_scrolling (notebook);
target = gtk_drag_dest_find_target (widget, context, NULL);
tab_target = gdk_atom_intern_static_string ("GTK_NOTEBOOK_TAB");
if (target == tab_target)
{
GQuark group, source_group;
GtkNotebook *source;
GtkWidget *source_child;
retval = TRUE;
source = GTK_NOTEBOOK (gtk_drag_get_source_widget (context));
g_assert (source->priv->cur_page != NULL);
source_child = source->priv->cur_page->child;
group = notebook->priv->group;
source_group = source->priv->group;
if (group != 0 && group == source_group &&
!(widget == source_child ||
gtk_widget_is_ancestor (widget, source_child)))
{
gdk_drag_status (context, GDK_ACTION_MOVE, time);
goto out;
}
else
{
/* it's a tab, but doesn't share
* ID with this notebook */
gdk_drag_status (context, 0, time);
}
}
x += allocation.x;
y += allocation.y;
if (gtk_notebook_get_event_window_position (notebook, &position) &&
x >= position.x && x <= position.x + position.width &&
y >= position.y && y <= position.y + position.height &&
(tab = get_tab_at_pos (notebook, x, y)))
{
priv->mouse_x = x;
priv->mouse_y = y;
retval = TRUE;
if (tab != priv->switch_tab)
remove_switch_tab_timer (notebook);
priv->switch_tab = tab;
if (!priv->switch_tab_timer)
{
priv->switch_tab_timer = gdk_threads_add_timeout (TIMEOUT_EXPAND,
gtk_notebook_switch_tab_timeout,
widget);
g_source_set_name_by_id (priv->switch_tab_timer, "[gtk+] gtk_notebook_switch_tab_timeout");
}
}
else
{
remove_switch_tab_timer (notebook);
}
out:
return retval;
}
static void
gtk_notebook_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
remove_switch_tab_timer (notebook);
stop_scrolling (notebook);
}
static gboolean
gtk_notebook_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GdkAtom target, tab_target;
target = gtk_drag_dest_find_target (widget, context, NULL);
tab_target = gdk_atom_intern_static_string ("GTK_NOTEBOOK_TAB");
if (target == tab_target)
{
gtk_drag_get_data (widget, context, target, time);
return TRUE;
}
return FALSE;
}
/**
* gtk_notebook_detach_tab:
* @notebook: a #GtkNotebook
* @child: a child
*
* Removes the child from the notebook.
*
* This function is very similar to gtk_container_remove(),
* but additionally informs the notebook that the removal
* is happening as part of a tab DND operation, which should
* not be cancelled.
*
* Since: 3.16
*/
void
gtk_notebook_detach_tab (GtkNotebook *notebook,
GtkWidget *child)
{
notebook->priv->remove_in_detach = TRUE;
gtk_container_remove (GTK_CONTAINER (notebook), child);
notebook->priv->remove_in_detach = FALSE;
}
static void
do_detach_tab (GtkNotebook *from,
GtkNotebook *to,
GtkWidget *child,
gint x,
gint y)
{
GtkNotebookPrivate *to_priv = to->priv;
GtkAllocation to_allocation;
GtkWidget *tab_label, *menu_label;
gboolean tab_expand, tab_fill, reorderable, detachable;
GList *element;
gint page_num;
menu_label = gtk_notebook_get_menu_label (from, child);
if (menu_label)
g_object_ref (menu_label);
tab_label = gtk_notebook_get_tab_label (from, child);
if (tab_label)
g_object_ref (tab_label);
g_object_ref (child);
gtk_container_child_get (GTK_CONTAINER (from),
child,
"tab-expand", &tab_expand,
"tab-fill", &tab_fill,
"reorderable", &reorderable,
"detachable", &detachable,
NULL);
gtk_notebook_detach_tab (from, child);
gtk_widget_get_allocation (GTK_WIDGET (to), &to_allocation);
to_priv->mouse_x = x + to_allocation.x;
to_priv->mouse_y = y + to_allocation.y;
element = get_drop_position (to);
page_num = g_list_position (to_priv->children, element);
gtk_notebook_insert_page_menu (to, child, tab_label, menu_label, page_num);
gtk_container_child_set (GTK_CONTAINER (to), child,
"tab-expand", tab_expand,
"tab-fill", tab_fill,
"reorderable", reorderable,
"detachable", detachable,
NULL);
if (child)
g_object_unref (child);
if (tab_label)
g_object_unref (tab_label);
if (menu_label)
g_object_unref (menu_label);
gtk_notebook_set_current_page (to, page_num);
}
static void
gtk_notebook_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint info,
guint time)
{
GdkAtom target;
target = gtk_selection_data_get_target (data);
if (target == gdk_atom_intern_static_string ("GTK_NOTEBOOK_TAB"))
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gtk_selection_data_set (data,
target,
8,
(void*) &priv->detached_tab->child,
sizeof (gpointer));
}
}
static void
gtk_notebook_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *data,
guint info,
guint time)
{
GtkNotebook *notebook;
GtkWidget *source_widget;
GtkWidget **child;
notebook = GTK_NOTEBOOK (widget);
source_widget = gtk_drag_get_source_widget (context);
if (source_widget &&
gtk_selection_data_get_target (data) == gdk_atom_intern_static_string ("GTK_NOTEBOOK_TAB"))
{
child = (void*) gtk_selection_data_get_data (data);
do_detach_tab (GTK_NOTEBOOK (source_widget), notebook, *child, x, y);
gtk_drag_finish (context, TRUE, FALSE, time);
}
else
gtk_drag_finish (context, FALSE, FALSE, time);
}
/* Private GtkContainer Methods :
*
* gtk_notebook_set_child_arg
* gtk_notebook_get_child_arg
* gtk_notebook_add
* gtk_notebook_remove
* gtk_notebook_focus
* gtk_notebook_set_focus_child
* gtk_notebook_child_type
* gtk_notebook_forall
*/
static void
gtk_notebook_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
gboolean expand;
gboolean fill;
/* not finding child's page is valid for menus or labels */
if (!gtk_notebook_find_child (GTK_NOTEBOOK (container), child, NULL))
return;
switch (property_id)
{
case CHILD_PROP_TAB_LABEL:
/* a NULL pointer indicates a default_tab setting, otherwise
* we need to set the associated label
*/
gtk_notebook_set_tab_label_text (GTK_NOTEBOOK (container), child,
g_value_get_string (value));
break;
case CHILD_PROP_MENU_LABEL:
gtk_notebook_set_menu_label_text (GTK_NOTEBOOK (container), child,
g_value_get_string (value));
break;
case CHILD_PROP_POSITION:
gtk_notebook_reorder_child (GTK_NOTEBOOK (container), child,
g_value_get_int (value));
break;
case CHILD_PROP_TAB_EXPAND:
gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
&expand, &fill);
gtk_notebook_set_tab_label_packing (GTK_NOTEBOOK (container), child,
g_value_get_boolean (value),
fill);
break;
case CHILD_PROP_TAB_FILL:
gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
&expand, &fill);
gtk_notebook_set_tab_label_packing (GTK_NOTEBOOK (container), child,
expand,
g_value_get_boolean (value));
break;
case CHILD_PROP_REORDERABLE:
gtk_notebook_set_tab_reorderable (GTK_NOTEBOOK (container), child,
g_value_get_boolean (value));
break;
case CHILD_PROP_DETACHABLE:
gtk_notebook_set_tab_detachable (GTK_NOTEBOOK (container), child,
g_value_get_boolean (value));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_notebook_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
GtkWidget *label;
gboolean expand;
gboolean fill;
/* not finding child's page is valid for menus or labels */
list = gtk_notebook_find_child (notebook, child, NULL);
if (!list)
{
/* nothing to set on labels or menus */
g_param_value_set_default (pspec, value);
return;
}
switch (property_id)
{
case CHILD_PROP_TAB_LABEL:
label = gtk_notebook_get_tab_label (notebook, child);
if (GTK_IS_LABEL (label))
g_value_set_string (value, gtk_label_get_label (GTK_LABEL (label)));
else
g_value_set_string (value, NULL);
break;
case CHILD_PROP_MENU_LABEL:
label = gtk_notebook_get_menu_label (notebook, child);
if (GTK_IS_LABEL (label))
g_value_set_string (value, gtk_label_get_label (GTK_LABEL (label)));
else
g_value_set_string (value, NULL);
break;
case CHILD_PROP_POSITION:
g_value_set_int (value, g_list_position (priv->children, list));
break;
case CHILD_PROP_TAB_EXPAND:
gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
&expand, NULL);
g_value_set_boolean (value, expand);
break;
case CHILD_PROP_TAB_FILL:
gtk_notebook_query_tab_label_packing (GTK_NOTEBOOK (container), child,
NULL, &fill);
g_value_set_boolean (value, fill);
break;
case CHILD_PROP_REORDERABLE:
g_value_set_boolean (value,
gtk_notebook_get_tab_reorderable (GTK_NOTEBOOK (container), child));
break;
case CHILD_PROP_DETACHABLE:
g_value_set_boolean (value,
gtk_notebook_get_tab_detachable (GTK_NOTEBOOK (container), child));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_notebook_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_notebook_insert_page_menu (GTK_NOTEBOOK (container), widget,
NULL, NULL, -1);
}
static void
gtk_notebook_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children, *list;
gint page_num = 0;
children = priv->children;
while (children)
{
page = children->data;
if (page->child == widget)
break;
page_num++;
children = children->next;
}
if (children == NULL)
return;
g_object_ref (widget);
list = children->next;
gtk_notebook_real_remove (notebook, children);
while (list)
{
gtk_widget_child_notify (((GtkNotebookPage *)list->data)->child, "position");
list = list->next;
}
g_signal_emit (notebook,
notebook_signals[PAGE_REMOVED],
0,
widget,
page_num);
g_object_unref (widget);
}
static gboolean
focus_tabs_in (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->show_tabs && priv->cur_page)
{
gtk_widget_grab_focus (GTK_WIDGET (notebook));
gtk_notebook_set_focus_child (GTK_CONTAINER (notebook), NULL);
gtk_notebook_switch_focus_tab (notebook,
g_list_find (priv->children,
priv->cur_page));
return TRUE;
}
else
return FALSE;
}
static gboolean
focus_tabs_move (GtkNotebook *notebook,
GtkDirectionType direction,
gint search_direction)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *new_page;
new_page = gtk_notebook_search_page (notebook, priv->focus_tab,
search_direction, TRUE);
if (!new_page)
{
new_page = gtk_notebook_search_page (notebook, NULL,
search_direction, TRUE);
}
if (new_page)
gtk_notebook_switch_focus_tab (notebook, new_page);
else
gtk_widget_error_bell (GTK_WIDGET (notebook));
return TRUE;
}
static gboolean
focus_child_in (GtkNotebook *notebook,
GtkDirectionType direction)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->cur_page)
return gtk_widget_child_focus (priv->cur_page->child, direction);
else
return FALSE;
}
static gboolean
focus_action_in (GtkNotebook *notebook,
gint action,
GtkDirectionType direction)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->action_widget[action] &&
gtk_widget_get_visible (priv->action_widget[action]))
return gtk_widget_child_focus (priv->action_widget[action], direction);
else
return FALSE;
}
/* Focus in the notebook can either be on the pages, or on
* the tabs or on the action_widgets.
*/
static gboolean
gtk_notebook_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *old_focus_child;
GtkDirectionType effective_direction;
gint first_action;
gint last_action;
gboolean widget_is_focus;
GtkContainer *container;
container = GTK_CONTAINER (widget);
if (priv->tab_pos == GTK_POS_TOP ||
priv->tab_pos == GTK_POS_LEFT)
{
first_action = ACTION_WIDGET_START;
last_action = ACTION_WIDGET_END;
}
else
{
first_action = ACTION_WIDGET_END;
last_action = ACTION_WIDGET_START;
}
if (priv->focus_out)
{
priv->focus_out = FALSE; /* Clear this to catch the wrap-around case */
return FALSE;
}
widget_is_focus = gtk_widget_is_focus (widget);
old_focus_child = gtk_container_get_focus_child (container);
effective_direction = get_effective_direction (notebook, direction);
if (old_focus_child) /* Focus on page child or action widget */
{
if (gtk_widget_child_focus (old_focus_child, direction))
return TRUE;
if (old_focus_child == priv->action_widget[ACTION_WIDGET_START])
{
switch (effective_direction)
{
case GTK_DIR_DOWN:
return focus_child_in (notebook, GTK_DIR_TAB_FORWARD);
case GTK_DIR_RIGHT:
return focus_tabs_in (notebook);
case GTK_DIR_LEFT:
return FALSE;
case GTK_DIR_UP:
return FALSE;
default:
switch (direction)
{
case GTK_DIR_TAB_FORWARD:
if ((priv->tab_pos == GTK_POS_RIGHT || priv->tab_pos == GTK_POS_BOTTOM) &&
focus_child_in (notebook, direction))
return TRUE;
return focus_tabs_in (notebook);
case GTK_DIR_TAB_BACKWARD:
return FALSE;
default:
g_assert_not_reached ();
}
}
}
else if (old_focus_child == priv->action_widget[ACTION_WIDGET_END])
{
switch (effective_direction)
{
case GTK_DIR_DOWN:
return focus_child_in (notebook, GTK_DIR_TAB_FORWARD);
case GTK_DIR_RIGHT:
return FALSE;
case GTK_DIR_LEFT:
return focus_tabs_in (notebook);
case GTK_DIR_UP:
return FALSE;
default:
switch (direction)
{
case GTK_DIR_TAB_FORWARD:
return FALSE;
case GTK_DIR_TAB_BACKWARD:
if ((priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_LEFT) &&
focus_child_in (notebook, direction))
return TRUE;
return focus_tabs_in (notebook);
default:
g_assert_not_reached ();
}
}
}
else
{
switch (effective_direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_UP:
/* Focus onto the tabs */
return focus_tabs_in (notebook);
case GTK_DIR_DOWN:
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return FALSE;
case GTK_DIR_TAB_FORWARD:
return focus_action_in (notebook, last_action, direction);
}
}
}
else if (widget_is_focus) /* Focus was on tabs */
{
switch (effective_direction)
{
case GTK_DIR_TAB_BACKWARD:
return focus_action_in (notebook, first_action, direction);
case GTK_DIR_UP:
return FALSE;
case GTK_DIR_TAB_FORWARD:
if (focus_child_in (notebook, GTK_DIR_TAB_FORWARD))
return TRUE;
return focus_action_in (notebook, last_action, direction);
case GTK_DIR_DOWN:
/* We use TAB_FORWARD rather than direction so that we focus a more
* predictable widget for the user; users may be using arrow focusing
* in this situation even if they don't usually use arrow focusing.
*/
return focus_child_in (notebook, GTK_DIR_TAB_FORWARD);
case GTK_DIR_LEFT:
return focus_tabs_move (notebook, direction, STEP_PREV);
case GTK_DIR_RIGHT:
return focus_tabs_move (notebook, direction, STEP_NEXT);
}
}
else /* Focus was not on widget */
{
switch (effective_direction)
{
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
if (focus_action_in (notebook, first_action, direction))
return TRUE;
if (focus_tabs_in (notebook))
return TRUE;
if (focus_action_in (notebook, last_action, direction))
return TRUE;
if (focus_child_in (notebook, direction))
return TRUE;
return FALSE;
case GTK_DIR_TAB_BACKWARD:
if (focus_action_in (notebook, last_action, direction))
return TRUE;
if (focus_child_in (notebook, direction))
return TRUE;
if (focus_tabs_in (notebook))
return TRUE;
if (focus_action_in (notebook, first_action, direction))
return TRUE;
case GTK_DIR_UP:
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return focus_child_in (notebook, direction);
}
}
g_assert_not_reached ();
return FALSE;
}
static void
gtk_notebook_set_focus_child (GtkContainer *container,
GtkWidget *child)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *page_child;
GtkWidget *toplevel;
/* If the old focus widget was within a page of the notebook,
* (child may either be NULL or not in this case), record it
* for future use if we switch to the page with a mnemonic.
*/
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (container));
if (toplevel && gtk_widget_is_toplevel (toplevel))
{
page_child = gtk_window_get_focus (GTK_WINDOW (toplevel));
while (page_child)
{
if (gtk_widget_get_parent (page_child) == GTK_WIDGET (container))
{
GList *list = gtk_notebook_find_child (notebook, page_child, NULL);
if (list != NULL)
{
GtkNotebookPage *page = list->data;
if (page->last_focus_child)
g_object_remove_weak_pointer (G_OBJECT (page->last_focus_child), (gpointer *)&page->last_focus_child);
page->last_focus_child = gtk_window_get_focus (GTK_WINDOW (toplevel));
g_object_add_weak_pointer (G_OBJECT (page->last_focus_child), (gpointer *)&page->last_focus_child);
break;
}
}
page_child = gtk_widget_get_parent (page_child);
}
}
if (child)
{
g_return_if_fail (GTK_IS_WIDGET (child));
priv->child_has_focus = TRUE;
if (!priv->focus_tab)
{
GList *children;
GtkNotebookPage *page;
children = priv->children;
while (children)
{
page = children->data;
if (page->child == child || page->tab_label == child)
gtk_notebook_switch_focus_tab (notebook, children);
children = children->next;
}
}
}
else
priv->child_has_focus = FALSE;
GTK_CONTAINER_CLASS (gtk_notebook_parent_class)->set_focus_child (container, child);
}
static void
gtk_notebook_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GList *children;
gint i;
children = priv->children;
while (children)
{
GtkNotebookPage *page;
page = children->data;
children = children->next;
(* callback) (page->child, callback_data);
if (include_internals)
{
if (page->tab_label)
(* callback) (page->tab_label, callback_data);
}
}
if (include_internals) {
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
(* callback) (priv->action_widget[i], callback_data);
}
}
}
static GtkWidgetPath *
gtk_notebook_get_path_for_child (GtkContainer *container,
GtkWidget *widget)
{
GtkNotebookPrivate *priv;
GtkNotebook *notebook;
GtkNotebookPage *page;
GtkWidgetPath *path;
GList *c;
path = GTK_CONTAINER_CLASS (gtk_notebook_parent_class)->get_path_for_child (container, widget);
notebook = GTK_NOTEBOOK (container);
priv = notebook->priv;
for (c = priv->children; c; c = c->next)
{
page = c->data;
if (page->tab_label == widget)
break;
}
/* Widget is not a tab label */
if (!c)
return path;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
gtk_widget_path_iter_add_region (path,
gtk_widget_path_length (path) - 2,
GTK_STYLE_REGION_TAB,
_gtk_notebook_get_tab_flags (notebook, page));
G_GNUC_END_IGNORE_DEPRECATIONS
return path;
}
static GType
gtk_notebook_child_type (GtkContainer *container)
{
return GTK_TYPE_WIDGET;
}
/* Private GtkNotebook Methods:
*
* gtk_notebook_real_insert_page
*/
static void
page_visible_cb (GtkWidget *page,
GParamSpec *arg,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
GList *next = NULL;
if (priv->cur_page &&
priv->cur_page->child == page &&
!gtk_widget_get_visible (page))
{
list = g_list_find (priv->children, priv->cur_page);
if (list)
{
next = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
if (!next)
next = gtk_notebook_search_page (notebook, list, STEP_PREV, TRUE);
}
if (next)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (next));
}
}
static gint
gtk_notebook_real_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
gint nchildren;
GList *list;
gtk_widget_freeze_child_notify (child);
page = g_slice_new0 (GtkNotebookPage);
page->child = child;
nchildren = g_list_length (priv->children);
if ((position < 0) || (position > nchildren))
position = nchildren;
priv->children = g_list_insert (priv->children, page, position);
if (!tab_label)
{
page->default_tab = TRUE;
}
page->tab_label = tab_label;
page->menu_label = menu_label;
page->expand = FALSE;
page->fill = TRUE;
if (!menu_label)
page->default_menu = TRUE;
else
g_object_ref_sink (page->menu_label);
if (priv->menu)
gtk_notebook_menu_item_create (notebook,
g_list_find (priv->children, page));
/* child visible will be turned on by switch_page below */
if (priv->cur_page != page)
gtk_widget_set_child_visible (child, FALSE);
gtk_widget_set_parent (child, GTK_WIDGET (notebook));
if (tab_label)
gtk_widget_set_parent (tab_label, GTK_WIDGET (notebook));
gtk_notebook_update_labels (notebook);
if (!priv->first_tab)
priv->first_tab = priv->children;
if (tab_label)
{
if (priv->show_tabs && gtk_widget_get_visible (child))
gtk_widget_show (tab_label);
else
gtk_widget_hide (tab_label);
page->mnemonic_activate_signal =
g_signal_connect (tab_label,
"mnemonic-activate",
G_CALLBACK (gtk_notebook_mnemonic_activate_switch_page),
notebook);
}
page->notify_visible_handler = g_signal_connect (child, "notify::visible",
G_CALLBACK (page_visible_cb), notebook);
g_signal_emit (notebook,
notebook_signals[PAGE_ADDED],
0,
child,
position);
if (!priv->cur_page)
{
gtk_notebook_switch_page (notebook, page);
/* focus_tab is set in the switch_page method */
gtk_notebook_switch_focus_tab (notebook, priv->focus_tab);
}
gtk_notebook_update_tab_states (notebook);
if (priv->scrollable)
gtk_notebook_redraw_arrows (notebook);
gtk_widget_child_notify (child, "tab-expand");
gtk_widget_child_notify (child, "tab-fill");
gtk_widget_child_notify (child, "tab-label");
gtk_widget_child_notify (child, "menu-label");
list = g_list_nth (priv->children, position);
while (list)
{
gtk_widget_child_notify (((GtkNotebookPage *)list->data)->child, "position");
list = list->next;
}
gtk_widget_thaw_child_notify (child);
/* The page-added handler might have reordered the pages, re-get the position */
return gtk_notebook_page_num (notebook, child);
}
/* Private GtkNotebook Functions:
*
* gtk_notebook_redraw_tabs
* gtk_notebook_real_remove
* gtk_notebook_update_labels
* gtk_notebook_timer
* gtk_notebook_set_scroll_timer
* gtk_notebook_page_compare
* gtk_notebook_search_page
*/
static void
gtk_notebook_redraw_tabs (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation;
GtkWidget *widget;
GtkNotebookPage *page;
GdkRectangle redraw_rect;
gint border;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
GtkBorder padding;
widget = GTK_WIDGET (notebook);
border = gtk_container_get_border_width (GTK_CONTAINER (notebook));
if (!gtk_widget_get_mapped (widget) || !priv->cur_page)
return;
page = priv->cur_page;
redraw_rect.x = border;
redraw_rect.y = border;
gtk_widget_get_allocation (widget, &allocation);
if (allocation.width <= 1)
return;
get_padding_and_border (notebook, &padding);
switch (tab_pos)
{
case GTK_POS_BOTTOM:
redraw_rect.y = allocation.height - border -
page->allocation.height - padding.bottom;
/* fall through */
case GTK_POS_TOP:
redraw_rect.width = MAX (1, allocation.width - 2 * border);
redraw_rect.height = page->allocation.height + padding.top;
break;
case GTK_POS_RIGHT:
redraw_rect.x = allocation.width - border -
page->allocation.width - padding.right;
/* fall through */
case GTK_POS_LEFT:
redraw_rect.width = page->allocation.width + padding.left;
redraw_rect.height = MAX (1, allocation.height - 2 * border);
break;
}
redraw_rect.x += allocation.x;
redraw_rect.y += allocation.y;
gdk_window_invalidate_rect (gtk_widget_get_window (widget),
&redraw_rect, TRUE);
}
static void
gtk_notebook_redraw_tabs_junction (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation;
GtkWidget *widget;
GtkNotebookPage *page;
GdkRectangle redraw_rect;
gint border;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
GtkBorder padding;
widget = GTK_WIDGET (notebook);
border = gtk_container_get_border_width (GTK_CONTAINER (notebook));
if (!gtk_widget_get_mapped (widget) || !priv->cur_page)
return;
page = priv->cur_page;
redraw_rect.x = border;
redraw_rect.y = border;
gtk_widget_get_allocation (widget, &allocation);
get_padding_and_border (notebook, &padding);
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
redraw_rect.width = allocation.width - 2 * border;
if (tab_pos == GTK_POS_TOP)
{
redraw_rect.y = border + page->allocation.y +
page->allocation.height;
redraw_rect.height = padding.top;
}
else
{
redraw_rect.y = allocation.height - border -
page->allocation.height - padding.bottom;
redraw_rect.height = padding.bottom;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
redraw_rect.height = allocation.height - 2 * border;
if (tab_pos == GTK_POS_LEFT)
{
redraw_rect.x = border + page->allocation.x + page->allocation.width;
redraw_rect.width = padding.left;
}
else
{
redraw_rect.x = allocation.width - border -
page->allocation.width - padding.right;
redraw_rect.width = padding.right;
}
break;
}
redraw_rect.x += allocation.x;
redraw_rect.y += allocation.y;
gdk_window_invalidate_rect (gtk_widget_get_window (widget),
&redraw_rect, TRUE);
}
static void
gtk_notebook_redraw_arrows (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (gtk_widget_get_mapped (GTK_WIDGET (notebook)) &&
gtk_notebook_show_arrows (notebook))
{
GdkRectangle rect;
gint i;
GtkNotebookArrow arrow[4];
arrow[0] = priv->has_before_previous ? ARROW_LEFT_BEFORE : ARROW_NONE;
arrow[1] = priv->has_before_next ? ARROW_RIGHT_BEFORE : ARROW_NONE;
arrow[2] = priv->has_after_previous ? ARROW_LEFT_AFTER : ARROW_NONE;
arrow[3] = priv->has_after_next ? ARROW_RIGHT_AFTER : ARROW_NONE;
for (i = 0; i < 4; i++)
{
if (arrow[i] == ARROW_NONE)
continue;
gtk_notebook_get_arrow_rect (notebook, &rect, arrow[i]);
gdk_window_invalidate_rect (gtk_widget_get_window (GTK_WIDGET (notebook)),
&rect, FALSE);
}
}
}
static gboolean
gtk_notebook_timer (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
gboolean retval = FALSE;
if (priv->timer)
{
gtk_notebook_do_arrow (notebook, priv->click_child);
if (priv->need_timer)
{
priv->need_timer = FALSE;
priv->timer = gdk_threads_add_timeout (TIMEOUT_REPEAT * SCROLL_DELAY_FACTOR,
(GSourceFunc) gtk_notebook_timer,
(gpointer) notebook);
g_source_set_name_by_id (priv->timer, "[gtk+] gtk_notebook_timer");
}
else
retval = TRUE;
}
return retval;
}
static void
gtk_notebook_set_scroll_timer (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (!priv->timer)
{
priv->timer = gdk_threads_add_timeout (TIMEOUT_INITIAL,
(GSourceFunc) gtk_notebook_timer,
(gpointer) notebook);
g_source_set_name_by_id (priv->timer, "[gtk+] gtk_notebook_timer");
priv->need_timer = TRUE;
}
}
static gint
gtk_notebook_page_compare (gconstpointer a,
gconstpointer b)
{
return (((GtkNotebookPage *) a)->child != b);
}
static GList*
gtk_notebook_find_child (GtkNotebook *notebook,
GtkWidget *child,
const gchar *function)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list = g_list_find_custom (priv->children, child,
gtk_notebook_page_compare);
#ifndef G_DISABLE_CHECKS
if (!list && function)
g_warning ("%s: unable to find child %p in notebook %p",
function, child, notebook);
#endif
return list;
}
static void
gtk_notebook_remove_tab_label (GtkNotebook *notebook,
GtkNotebookPage *page)
{
if (page->tab_label)
{
if (page->mnemonic_activate_signal)
g_signal_handler_disconnect (page->tab_label,
page->mnemonic_activate_signal);
page->mnemonic_activate_signal = 0;
if (gtk_widget_get_window (page->tab_label) != gtk_widget_get_window (GTK_WIDGET (notebook)) ||
!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
{
GtkWidget *parent;
/* we hit this condition during dnd of a detached tab */
parent = gtk_widget_get_parent (page->tab_label);
if (GTK_IS_WINDOW (parent))
gtk_container_remove (GTK_CONTAINER (parent), page->tab_label);
else
gtk_widget_unparent (page->tab_label);
}
else
{
gtk_widget_unparent (page->tab_label);
}
page->tab_label = NULL;
}
}
static void
gtk_notebook_real_remove (GtkNotebook *notebook,
GList *list)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList * next_list;
gint need_resize = FALSE;
GtkWidget *tab_label;
gboolean destroying;
destroying = gtk_widget_in_destruction (GTK_WIDGET (notebook));
next_list = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
if (!next_list)
next_list = gtk_notebook_search_page (notebook, list, STEP_PREV, TRUE);
priv->children = g_list_remove_link (priv->children, list);
if (priv->cur_page == list->data)
{
if (priv->cur_page->tab_label)
gtk_style_context_remove_class (gtk_widget_get_style_context (priv->cur_page->tab_label),
"active-page");
priv->cur_page = NULL;
if (next_list && !destroying)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (next_list));
if (priv->operation == DRAG_OPERATION_REORDER && !priv->remove_in_detach)
gtk_notebook_stop_reorder (notebook);
}
if (priv->detached_tab == list->data)
{
priv->detached_tab = NULL;
if (priv->operation == DRAG_OPERATION_DETACH && !priv->remove_in_detach)
{
GdkDragContext *context;
context = (GdkDragContext *)g_object_get_data (G_OBJECT (priv->dnd_window), "drag-context");
gtk_drag_cancel (context);
}
}
if (priv->prelight_tab == list->data)
update_prelight_tab (notebook, NULL);
if (priv->switch_tab == list)
priv->switch_tab = NULL;
if (list == priv->first_tab)
priv->first_tab = next_list;
if (list == priv->focus_tab && !destroying)
gtk_notebook_switch_focus_tab (notebook, next_list);
page = list->data;
g_signal_handler_disconnect (page->child, page->notify_visible_handler);
if (gtk_widget_get_visible (page->child) &&
gtk_widget_get_visible (GTK_WIDGET (notebook)))
need_resize = TRUE;
gtk_widget_unparent (page->child);
tab_label = page->tab_label;
if (tab_label)
{
g_object_ref (tab_label);
gtk_notebook_remove_tab_label (notebook, page);
if (destroying)
gtk_widget_destroy (tab_label);
g_object_unref (tab_label);
}
if (priv->menu)
{
GtkWidget *parent = gtk_widget_get_parent (page->menu_label);
gtk_notebook_menu_label_unparent (parent, NULL);
gtk_container_remove (GTK_CONTAINER (priv->menu), parent);
gtk_widget_queue_resize (priv->menu);
}
if (!page->default_menu)
g_object_unref (page->menu_label);
g_list_free (list);
if (page->last_focus_child)
{
g_object_remove_weak_pointer (G_OBJECT (page->last_focus_child), (gpointer *)&page->last_focus_child);
page->last_focus_child = NULL;
}
g_slice_free (GtkNotebookPage, page);
gtk_notebook_update_labels (notebook);
if (need_resize)
gtk_widget_queue_resize (GTK_WIDGET (notebook));
}
static void
gtk_notebook_update_labels (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *list;
gchar string[32];
gint page_num = 1;
if (!priv->show_tabs && !priv->menu)
return;
for (list = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, FALSE);
list;
list = gtk_notebook_search_page (notebook, list, STEP_NEXT, FALSE))
{
page = list->data;
g_snprintf (string, sizeof(string), _("Page %u"), page_num++);
if (priv->show_tabs)
{
if (page->default_tab)
{
if (!page->tab_label)
{
page->tab_label = gtk_label_new (string);
gtk_widget_set_parent (page->tab_label,
GTK_WIDGET (notebook));
}
else
gtk_label_set_text (GTK_LABEL (page->tab_label), string);
}
if (gtk_widget_get_visible (page->child) &&
!gtk_widget_get_visible (page->tab_label))
gtk_widget_show (page->tab_label);
else if (!gtk_widget_get_visible (page->child) &&
gtk_widget_get_visible (page->tab_label))
gtk_widget_hide (page->tab_label);
}
if (priv->menu && page->default_menu)
{
if (GTK_IS_LABEL (page->tab_label))
gtk_label_set_text (GTK_LABEL (page->menu_label),
gtk_label_get_label (GTK_LABEL (page->tab_label)));
else
gtk_label_set_text (GTK_LABEL (page->menu_label), string);
}
}
}
static GList *
gtk_notebook_search_page (GtkNotebook *notebook,
GList *list,
gint direction,
gboolean find_visible)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page = NULL;
GList *old_list = NULL;
if (list)
page = list->data;
if (!page || direction == STEP_NEXT)
{
if (list)
{
old_list = list;
list = list->next;
}
else
list = priv->children;
while (list)
{
page = list->data;
if (direction == STEP_NEXT &&
(!find_visible ||
(gtk_widget_get_visible (page->child) &&
(!page->tab_label || NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page)))))
return list;
old_list = list;
list = list->next;
}
list = old_list;
}
else
{
list = list->prev;
}
while (list)
{
page = list->data;
if (direction == STEP_PREV &&
(!find_visible ||
(gtk_widget_get_visible (page->child) &&
(!page->tab_label || NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page)))))
return list;
list = list->prev;
}
return NULL;
}
/* Private GtkNotebook Drawing Functions:
*
* gtk_notebook_paint
* gtk_notebook_draw_tab
* gtk_notebook_draw_arrow
*/
static void
gtk_notebook_paint (GtkWidget *widget,
cairo_t *cr)
{
GtkNotebook *notebook;
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GtkAllocation allocation;
GList *children;
gboolean showarrow;
gint width, height;
gint header_width, header_height;
gint x, y;
gint header_x, header_y;
guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
gint gap_x = 0, gap_width = 0, step = STEP_PREV;
gboolean is_rtl;
gboolean has_tab_gap;
GtkPositionType tab_pos;
GtkStyleContext *context;
notebook = GTK_NOTEBOOK (widget);
priv = notebook->priv;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
tab_pos = get_effective_tab_pos (notebook);
context = gtk_widget_get_style_context (widget);
showarrow = FALSE;
if ((!priv->show_tabs && !priv->show_border) ||
!priv->cur_page || !gtk_widget_get_visible (priv->cur_page->child))
return;
gtk_widget_get_allocation (widget, &allocation);
x = allocation.x + border_width;
y = allocation.y + border_width;
width = allocation.width - border_width * 2;
height = allocation.height - border_width * 2;
if (priv->show_border && (!priv->show_tabs || !priv->children))
{
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
gtk_render_background (context, cr,
x, y, width, height);
gtk_render_frame (context, cr,
x, y, width, height);
gtk_style_context_restore (context);
return;
}
if (!priv->first_tab)
priv->first_tab = priv->children;
if (!gtk_widget_get_mapped (priv->cur_page->tab_label))
page = GTK_NOTEBOOK_PAGE (priv->first_tab);
else
page = priv->cur_page;
header_x = x;
header_y = y;
header_width = width;
header_height = height;
gtk_style_context_save (context);
add_tab_position_style_class (context, tab_pos);
switch (tab_pos)
{
case GTK_POS_TOP:
y += page->allocation.height;
height -= page->allocation.height;
header_height = page->allocation.height;
break;
case GTK_POS_BOTTOM:
height -= page->allocation.height;
header_y += height;
header_height = page->allocation.height;
break;
case GTK_POS_LEFT:
x += page->allocation.width;
width -= page->allocation.width;
header_width = page->allocation.width;
break;
case GTK_POS_RIGHT:
width -= page->allocation.width;
header_width = page->allocation.width;
header_x += width;
break;
}
gtk_style_context_add_class (context, GTK_STYLE_CLASS_HEADER);
if (priv->show_border)
gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
gtk_render_background (context, cr,
header_x, header_y, header_width, header_height);
gtk_render_frame (context, cr,
header_x, header_y, header_width, header_height);
gtk_style_context_restore (context);
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, priv->cur_page) ||
!gtk_widget_get_mapped (priv->cur_page->tab_label))
{
gap_x = 0;
gap_width = 0;
}
else
{
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (priv->operation == DRAG_OPERATION_REORDER)
gap_x = priv->drag_window_x - allocation.x - border_width;
else
gap_x = priv->cur_page->allocation.x - allocation.x - border_width;
gap_width = priv->cur_page->allocation.width;
step = is_rtl ? STEP_PREV : STEP_NEXT;
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (priv->operation == DRAG_OPERATION_REORDER)
gap_x = priv->drag_window_y - border_width - allocation.y;
else
gap_x = priv->cur_page->allocation.y - allocation.y - border_width;
gap_width = priv->cur_page->allocation.height;
step = STEP_PREV;
break;
}
}
for (children = priv->children; children; children = children->next)
{
page = children->data;
if (!gtk_widget_get_visible (page->child))
continue;
if (!gtk_widget_get_mapped (page->tab_label))
showarrow = TRUE;
/* No point in keeping searching */
if (showarrow)
break;
}
gtk_style_context_save (context);
if (!showarrow || !priv->scrollable)
{
GtkJunctionSides junction = 0;
/* Apply junction sides, if no arrows are shown,
* then make corners with connecting tabs square.
*/
switch (tab_pos)
{
case GTK_POS_TOP:
junction |= (is_rtl) ? GTK_JUNCTION_CORNER_TOPRIGHT : GTK_JUNCTION_CORNER_TOPLEFT;
break;
case GTK_POS_BOTTOM:
junction |= (is_rtl) ? GTK_JUNCTION_CORNER_BOTTOMRIGHT : GTK_JUNCTION_CORNER_BOTTOMLEFT;
break;
case GTK_POS_LEFT:
junction |= GTK_JUNCTION_CORNER_TOPLEFT;
break;
case GTK_POS_RIGHT:
junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
break;
}
gtk_style_context_set_junction_sides (context, junction);
}
gtk_widget_style_get (GTK_WIDGET (notebook),
"has-tab-gap", &has_tab_gap,
NULL);
if (priv->show_tabs)
add_tab_position_style_class (context, tab_pos);
if (priv->show_border)
gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
gtk_render_background (context, cr,
x, y, width, height);
if (has_tab_gap)
gtk_render_frame_gap (context, cr,
x, y, width, height,
tab_pos, gap_x, gap_x + gap_width);
else
gtk_render_frame (context, cr,
x, y, width, height);
gtk_style_context_restore (context);
children = gtk_notebook_search_page (notebook, NULL, step, TRUE);
while (children)
{
page = children->data;
if (page == priv->cur_page)
break;
children = gtk_notebook_search_page (notebook, children,
step, TRUE);
if (!gtk_widget_get_visible (page->child) ||
!gtk_widget_get_mapped (page->tab_label))
continue;
gtk_notebook_draw_tab (notebook, page, cr, TRUE);
}
if (children != NULL)
{
GList *other_order = NULL;
while (children)
{
page = children->data;
children = gtk_notebook_search_page (notebook, children,
step, TRUE);
if (!gtk_widget_get_visible (page->child) ||
!gtk_widget_get_mapped (page->tab_label))
continue;
if (children != NULL)
other_order = g_list_prepend (other_order, children->data);
}
/* draw them with the opposite order */
for (children = other_order; children; children = children->next)
{
page = children->data;
gtk_notebook_draw_tab (notebook, page, cr, TRUE);
}
g_list_free (other_order);
}
if (showarrow && priv->scrollable)
{
if (priv->has_before_previous)
gtk_notebook_draw_arrow (notebook, cr, ARROW_LEFT_BEFORE);
if (priv->has_before_next)
gtk_notebook_draw_arrow (notebook, cr, ARROW_RIGHT_BEFORE);
if (priv->has_after_previous)
gtk_notebook_draw_arrow (notebook, cr, ARROW_LEFT_AFTER);
if (priv->has_after_next)
gtk_notebook_draw_arrow (notebook, cr, ARROW_RIGHT_AFTER);
}
if (priv->operation != DRAG_OPERATION_REORDER)
gtk_notebook_draw_tab (notebook, priv->cur_page, cr, TRUE);
}
static void
gtk_notebook_draw_tab (GtkNotebook *notebook,
GtkNotebookPage *page,
cairo_t *cr,
gboolean use_flags)
{
GtkNotebookPrivate *priv;
GtkWidget *widget;
GtkStyleContext *context;
gboolean has_tab_gap;
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) ||
!gtk_widget_get_mapped (page->tab_label) ||
(page->allocation.width == 0) || (page->allocation.height == 0))
return;
widget = GTK_WIDGET (notebook);
priv = notebook->priv;
context = gtk_widget_get_style_context (widget);
gtk_style_context_save (context);
notebook_tab_prepare_style_context (notebook, page, context, use_flags);
gtk_widget_style_get (GTK_WIDGET (notebook),
"has-tab-gap", &has_tab_gap,
NULL);
if (has_tab_gap)
{
gtk_render_extension (context, cr,
page->allocation.x,
page->allocation.y,
page->allocation.width,
page->allocation.height,
get_tab_gap_pos (notebook));
}
else
{
gtk_render_background (context, cr,
page->allocation.x,
page->allocation.y,
page->allocation.width,
page->allocation.height);
gtk_render_frame (context, cr,
page->allocation.x,
page->allocation.y,
page->allocation.width,
page->allocation.height);
}
if (gtk_widget_has_visible_focus (widget) &&
priv->cur_page == page)
{
GtkAllocation allocation;
gtk_widget_get_allocation (page->tab_label, &allocation);
gtk_render_focus (context, cr,
allocation.x,
allocation.y,
allocation.width,
allocation.height);
}
gtk_style_context_restore (context);
}
static void
gtk_notebook_draw_arrow (GtkNotebook *notebook,
cairo_t *cr,
GtkNotebookArrow nbarrow)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkStyleContext *context;
GtkStateFlags state = 0;
GtkWidget *widget;
GdkRectangle arrow_rect;
gboolean is_rtl, left;
gint scroll_arrow_hlength;
gint scroll_arrow_vlength;
gint arrow_size;
gdouble angle;
widget = GTK_WIDGET (notebook);
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_notebook_get_arrow_rect (notebook, &arrow_rect, nbarrow);
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
left = (ARROW_IS_LEFT (nbarrow) && !is_rtl) ||
(!ARROW_IS_LEFT (nbarrow) && is_rtl);
gtk_widget_style_get (widget,
"scroll-arrow-hlength", &scroll_arrow_hlength,
"scroll-arrow-vlength", &scroll_arrow_vlength,
NULL);
if (priv->focus_tab &&
!gtk_notebook_search_page (notebook, priv->focus_tab,
left ? STEP_PREV : STEP_NEXT, TRUE))
{
state |= GTK_STATE_FLAG_INSENSITIVE;
}
else if (priv->in_child == nbarrow)
{
state |= GTK_STATE_FLAG_PRELIGHT;
if (priv->click_child == nbarrow)
state |= GTK_STATE_FLAG_ACTIVE;
}
if (priv->tab_pos == GTK_POS_LEFT ||
priv->tab_pos == GTK_POS_RIGHT)
{
angle = (ARROW_IS_LEFT (nbarrow)) ? 0 : G_PI;
arrow_size = scroll_arrow_vlength;
}
else
{
angle = (ARROW_IS_LEFT (nbarrow)) ? 3 * (G_PI / 2) : G_PI / 2;
arrow_size = scroll_arrow_hlength;
}
gtk_style_context_save (context);
gtk_style_context_set_state (context, state);
gtk_render_arrow (context, cr, angle,
arrow_rect.x, arrow_rect.y,
arrow_size);
gtk_style_context_restore (context);
}
/* Private GtkNotebook Size Allocate Functions:
*
* gtk_notebook_tab_space
* gtk_notebook_calculate_shown_tabs
* gtk_notebook_calculate_tabs_allocation
* gtk_notebook_pages_allocate
* gtk_notebook_page_allocate
* gtk_notebook_calc_tabs
*/
static void
gtk_notebook_tab_space (GtkNotebook *notebook,
gboolean *show_arrows,
gint *min,
gint *max,
gint *tab_space)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation, action_allocation;
GtkWidget *widget;
GList *children;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
gint tab_overlap;
gint arrow_spacing;
gint scroll_arrow_hlength;
gint scroll_arrow_vlength;
gboolean is_rtl;
gint i;
guint border_width;
GtkBorder padding;
gint initial_gap;
widget = GTK_WIDGET (notebook);
children = priv->children;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
gtk_widget_style_get (GTK_WIDGET (notebook),
"arrow-spacing", &arrow_spacing,
"scroll-arrow-hlength", &scroll_arrow_hlength,
"scroll-arrow-vlength", &scroll_arrow_vlength,
"initial-gap", &initial_gap,
NULL);
border_width = gtk_container_get_border_width (GTK_CONTAINER (notebook));
get_padding_and_border (notebook, &padding);
gtk_widget_get_allocation (widget, &allocation);
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
*min = allocation.x + border_width;
*max = allocation.x + allocation.width - border_width;
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
{
gtk_widget_get_allocation (priv->action_widget[i], &action_allocation);
if ((i == ACTION_WIDGET_START && !is_rtl) ||
(i == ACTION_WIDGET_END && is_rtl))
*min += action_allocation.width + padding.left;
else
*max -= action_allocation.width + padding.right;
}
}
while (children)
{
GtkNotebookPage *page;
page = children->data;
children = children->next;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
*tab_space += page->requisition.width;
}
break;
case GTK_POS_RIGHT:
case GTK_POS_LEFT:
*min = allocation.y + border_width;
*max = allocation.y + allocation.height - border_width;
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
{
gtk_widget_get_allocation (priv->action_widget[i], &action_allocation);
if (i == ACTION_WIDGET_START)
*min += action_allocation.height + padding.top;
else
*max -= action_allocation.height + padding.bottom;
}
}
while (children)
{
GtkNotebookPage *page;
page = children->data;
children = children->next;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
*tab_space += page->requisition.height;
}
break;
}
*min += initial_gap;
*max -= initial_gap;
if (!priv->scrollable)
*show_arrows = FALSE;
else
{
gtk_widget_style_get (widget, "tab-overlap", &tab_overlap, NULL);
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (*tab_space > *max - *min - tab_overlap)
{
*show_arrows = TRUE;
/* take arrows into account */
*tab_space = *max - *min - tab_overlap;
if (priv->has_after_previous)
{
*tab_space -= arrow_spacing + scroll_arrow_hlength;
*max -= arrow_spacing + scroll_arrow_hlength;
}
if (priv->has_after_next)
{
*tab_space -= arrow_spacing + scroll_arrow_hlength;
*max -= arrow_spacing + scroll_arrow_hlength;
}
if (priv->has_before_previous)
{
*tab_space -= arrow_spacing + scroll_arrow_hlength;
*min += arrow_spacing + scroll_arrow_hlength;
}
if (priv->has_before_next)
{
*tab_space -= arrow_spacing + scroll_arrow_hlength;
*min += arrow_spacing + scroll_arrow_hlength;
}
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (*tab_space > *max - *min - tab_overlap)
{
*show_arrows = TRUE;
/* take arrows into account */
*tab_space = *max - *min - tab_overlap;
if (priv->has_after_previous || priv->has_after_next)
{
*tab_space -= arrow_spacing + scroll_arrow_vlength;
*max -= arrow_spacing + scroll_arrow_vlength;
}
if (priv->has_before_previous || priv->has_before_next)
{
*tab_space -= arrow_spacing + scroll_arrow_vlength;
*min += arrow_spacing + scroll_arrow_vlength;
}
}
break;
}
}
}
static void
gtk_notebook_calculate_shown_tabs (GtkNotebook *notebook,
gboolean show_arrows,
gint min,
gint max,
gint tab_space,
GList **last_child,
gint *n,
gint *remaining_space)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget;
GList *children;
GtkNotebookPage *page;
gint tab_overlap;
widget = GTK_WIDGET (notebook);
gtk_widget_style_get (widget, "tab-overlap", &tab_overlap, NULL);
if (show_arrows) /* first_tab <- focus_tab */
{
*remaining_space = tab_space;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, priv->cur_page) &&
gtk_widget_get_visible (priv->cur_page->child))
{
gtk_notebook_calc_tabs (notebook,
priv->focus_tab,
&(priv->focus_tab),
remaining_space, STEP_NEXT);
}
if (tab_space <= 0 || *remaining_space <= 0)
{
/* show 1 tab */
priv->first_tab = priv->focus_tab;
*last_child = gtk_notebook_search_page (notebook, priv->focus_tab,
STEP_NEXT, TRUE);
page = priv->first_tab->data;
*remaining_space = tab_space - page->requisition.width;
*n = 1;
}
else
{
children = NULL;
if (priv->first_tab && priv->first_tab != priv->focus_tab)
{
/* Is first_tab really predecessor of focus_tab? */
page = priv->first_tab->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
for (children = priv->focus_tab;
children && children != priv->first_tab;
children = gtk_notebook_search_page (notebook,
children,
STEP_PREV,
TRUE));
}
if (!children)
{
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, priv->cur_page))
priv->first_tab = priv->focus_tab;
else
priv->first_tab = gtk_notebook_search_page (notebook, priv->focus_tab,
STEP_NEXT, TRUE);
}
else
/* calculate shown tabs counting backwards from the focus tab */
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
priv->focus_tab,
STEP_PREV,
TRUE),
&(priv->first_tab),
remaining_space,
STEP_PREV);
if (*remaining_space < 0)
{
priv->first_tab =
gtk_notebook_search_page (notebook, priv->first_tab,
STEP_NEXT, TRUE);
if (!priv->first_tab)
priv->first_tab = priv->focus_tab;
*last_child = gtk_notebook_search_page (notebook, priv->focus_tab,
STEP_NEXT, TRUE);
}
else /* focus_tab -> end */
{
if (!priv->first_tab)
priv->first_tab = gtk_notebook_search_page (notebook,
NULL,
STEP_NEXT,
TRUE);
children = NULL;
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
priv->focus_tab,
STEP_NEXT,
TRUE),
&children,
remaining_space,
STEP_NEXT);
if (*remaining_space <= 0)
*last_child = children;
else /* start <- first_tab */
{
*last_child = NULL;
children = NULL;
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
priv->first_tab,
STEP_PREV,
TRUE),
&children,
remaining_space,
STEP_PREV);
if (*remaining_space == 0)
priv->first_tab = children;
else
priv->first_tab = gtk_notebook_search_page(notebook,
children,
STEP_NEXT,
TRUE);
}
}
if (*remaining_space < 0)
{
/* calculate number of tabs */
*remaining_space = - (*remaining_space);
*n = 0;
for (children = priv->first_tab;
children && children != *last_child;
children = gtk_notebook_search_page (notebook, children,
STEP_NEXT, TRUE))
(*n)++;
}
else
*remaining_space = 0;
}
/* unmap all non-visible tabs */
for (children = gtk_notebook_search_page (notebook, NULL,
STEP_NEXT, TRUE);
children && children != priv->first_tab;
children = gtk_notebook_search_page (notebook, children,
STEP_NEXT, TRUE))
{
page = children->data;
if (page->tab_label &&
NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
gtk_widget_set_child_visible (page->tab_label, FALSE);
}
for (children = *last_child; children;
children = gtk_notebook_search_page (notebook, children,
STEP_NEXT, TRUE))
{
page = children->data;
if (page->tab_label &&
NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
gtk_widget_set_child_visible (page->tab_label, FALSE);
}
}
else /* !show_arrows */
{
GtkOrientation tab_expand_orientation;
gint c = 0;
*n = 0;
if (priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_BOTTOM)
tab_expand_orientation = GTK_ORIENTATION_HORIZONTAL;
else
tab_expand_orientation = GTK_ORIENTATION_VERTICAL;
*remaining_space = max - min - tab_overlap - tab_space;
children = priv->children;
priv->first_tab = gtk_notebook_search_page (notebook, NULL,
STEP_NEXT, TRUE);
while (children)
{
page = children->data;
children = children->next;
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) ||
!gtk_widget_get_visible (page->child))
continue;
c++;
if (page->expand ||
(gtk_widget_compute_expand (page->tab_label, tab_expand_orientation)))
(*n)++;
}
}
}
static gboolean
get_allocate_at_bottom (GtkWidget *widget,
gint search_direction)
{
gboolean is_rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
GtkPositionType tab_pos = get_effective_tab_pos (GTK_NOTEBOOK (widget));
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (!is_rtl)
return (search_direction == STEP_PREV);
else
return (search_direction == STEP_NEXT);
break;
case GTK_POS_RIGHT:
case GTK_POS_LEFT:
return (search_direction == STEP_PREV);
break;
}
return FALSE;
}
static void
gtk_notebook_calculate_tabs_allocation (GtkNotebook *notebook,
GList **children,
GList *last_child,
gboolean showarrow,
gint direction,
gint *remaining_space,
gint *expanded_tabs,
gint min,
gint max)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation allocation;
GtkWidget *widget;
GtkContainer *container;
GtkNotebookPage *page;
GtkStyleContext *context;
gboolean allocate_at_bottom;
gint tab_overlap, tab_extra_space;
GtkPositionType tab_pos;
gint left_x, right_x, top_y, bottom_y, anchor;
guint border_width;
gboolean gap_left, packing_changed;
GtkAllocation child_allocation = { 0, };
GtkOrientation tab_expand_orientation;
g_assert (priv->cur_page != NULL);
widget = GTK_WIDGET (notebook);
container = GTK_CONTAINER (notebook);
gtk_widget_style_get (widget, "tab-overlap", &tab_overlap, NULL);
tab_pos = get_effective_tab_pos (notebook);
allocate_at_bottom = get_allocate_at_bottom (widget, direction);
anchor = 0;
gtk_widget_get_allocation (widget, &allocation);
border_width = gtk_container_get_border_width (container);
child_allocation.x = allocation.x + border_width;
child_allocation.y = allocation.y + border_width;
context = gtk_widget_get_style_context (widget);
switch (tab_pos)
{
case GTK_POS_BOTTOM:
child_allocation.y = allocation.y + allocation.height -
priv->cur_page->requisition.height - border_width;
/* fall through */
case GTK_POS_TOP:
child_allocation.x = (allocate_at_bottom) ? max : min;
child_allocation.height = priv->cur_page->requisition.height;
anchor = child_allocation.x;
break;
case GTK_POS_RIGHT:
child_allocation.x = allocation.x + allocation.width -
priv->cur_page->requisition.width - border_width;
/* fall through */
case GTK_POS_LEFT:
child_allocation.y = (allocate_at_bottom) ? max : min;
child_allocation.width = priv->cur_page->requisition.width;
anchor = child_allocation.y;
break;
}
left_x = CLAMP (priv->mouse_x - priv->drag_offset_x,
min, max - priv->cur_page->allocation.width);
top_y = CLAMP (priv->mouse_y - priv->drag_offset_y,
min, max - priv->cur_page->allocation.height);
right_x = left_x + priv->cur_page->allocation.width;
bottom_y = top_y + priv->cur_page->allocation.height;
gap_left = packing_changed = FALSE;
if (priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_BOTTOM)
tab_expand_orientation = GTK_ORIENTATION_HORIZONTAL;
else
tab_expand_orientation = GTK_ORIENTATION_VERTICAL;
while (*children && *children != last_child)
{
page = (*children)->data;
if (direction == STEP_NEXT)
*children = gtk_notebook_search_page (notebook, *children, direction, TRUE);
else
{
*children = (*children)->next;
continue;
}
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
continue;
tab_extra_space = 0;
if (*expanded_tabs && (showarrow || page->expand || gtk_widget_compute_expand (page->tab_label, tab_expand_orientation)))
{
tab_extra_space = *remaining_space / *expanded_tabs;
*remaining_space -= tab_extra_space;
(*expanded_tabs)--;
}
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
child_allocation.width = MAX (1, page->requisition.width + tab_overlap + tab_extra_space);
/* make sure that the reordered tab doesn't go past the last position */
if (priv->operation == DRAG_OPERATION_REORDER &&
!gap_left && packing_changed)
{
if (!allocate_at_bottom)
{
if (left_x >= anchor)
{
left_x = priv->drag_window_x = anchor;
anchor += priv->cur_page->allocation.width - tab_overlap;
}
}
else
{
if (right_x <= anchor)
{
anchor -= priv->cur_page->allocation.width;
left_x = priv->drag_window_x = anchor;
anchor += tab_overlap;
}
}
gap_left = TRUE;
}
if (priv->operation == DRAG_OPERATION_REORDER && page == priv->cur_page)
{
priv->drag_window_x = left_x;
priv->drag_window_y = child_allocation.y;
}
else
{
if (allocate_at_bottom)
anchor -= child_allocation.width;
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
left_x >= anchor &&
left_x <= anchor + child_allocation.width / 2)
anchor += priv->cur_page->allocation.width - tab_overlap;
else if (allocate_at_bottom &&
right_x >= anchor + child_allocation.width / 2 &&
right_x <= anchor + child_allocation.width)
anchor -= priv->cur_page->allocation.width - tab_overlap;
}
child_allocation.x = anchor;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
child_allocation.height = MAX (1, page->requisition.height + tab_overlap + tab_extra_space);
/* make sure that the reordered tab doesn't go past the last position */
if (priv->operation == DRAG_OPERATION_REORDER &&
!gap_left && packing_changed)
{
if (!allocate_at_bottom && top_y >= anchor)
{
top_y = priv->drag_window_y = anchor;
anchor += priv->cur_page->allocation.height - tab_overlap;
}
gap_left = TRUE;
}
if (priv->operation == DRAG_OPERATION_REORDER && page == priv->cur_page)
{
priv->drag_window_x = child_allocation.x;
priv->drag_window_y = top_y;
}
else
{
if (allocate_at_bottom)
anchor -= child_allocation.height;
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
top_y >= anchor &&
top_y <= anchor + child_allocation.height / 2)
anchor += priv->cur_page->allocation.height - tab_overlap;
else if (allocate_at_bottom &&
bottom_y >= anchor + child_allocation.height / 2 &&
bottom_y <= anchor + child_allocation.height)
anchor -= priv->cur_page->allocation.height - tab_overlap;
}
child_allocation.y = anchor;
}
break;
}
page->allocation = child_allocation;
if ((page == priv->detached_tab && priv->operation == DRAG_OPERATION_DETACH) ||
(page == priv->cur_page && priv->operation == DRAG_OPERATION_REORDER))
{
/* needs to be allocated at 0,0
* to be shown in the drag window */
page->allocation.x = 0;
page->allocation.y = 0;
}
if (page != priv->cur_page)
{
GtkBorder active_padding, normal_padding, padding;
/* The active tab is by definition at least the same height as the inactive one.
* The padding we're building is the offset between the two tab states,
* so in case the style specifies normal_padding > active_padding we
* remove the offset and draw them with the same height.
* Note that the padding will still be applied to the tab content though,
* see gtk_notebook_page_allocate().
*/
gtk_style_context_save (context);
notebook_tab_prepare_style_context (notebook, page, context, TRUE);
gtk_style_context_get_padding (context, GTK_STATE_FLAG_ACTIVE, &active_padding);
gtk_style_context_get_padding (context, GTK_STATE_FLAG_NORMAL, &normal_padding);
gtk_style_context_restore (context);
padding.top = MAX (0, active_padding.top - normal_padding.top);
padding.right = MAX (0, active_padding.right - normal_padding.right);
padding.bottom = MAX (0, active_padding.bottom - normal_padding.bottom);
padding.left = MAX (0, active_padding.left - normal_padding.left);
switch (tab_pos)
{
case GTK_POS_TOP:
page->allocation.y += padding.top + padding.bottom;
page->allocation.height = MAX (1, page->allocation.height - padding.top - padding.bottom);
break;
case GTK_POS_BOTTOM:
page->allocation.height = MAX (1, page->allocation.height - padding.top - padding.bottom);
break;
case GTK_POS_LEFT:
page->allocation.x += padding.left + padding.right;
page->allocation.width = MAX (1, page->allocation.width - padding.left - padding.right);
break;
case GTK_POS_RIGHT:
page->allocation.width = MAX (1, page->allocation.width - padding.left - padding.right);
break;
}
}
/* calculate whether to leave a gap based on reorder operation or not */
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (priv->operation != DRAG_OPERATION_REORDER ||
(priv->operation == DRAG_OPERATION_REORDER && page != priv->cur_page))
{
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
left_x > anchor + child_allocation.width / 2 &&
left_x <= anchor + child_allocation.width)
anchor += priv->cur_page->allocation.width - tab_overlap;
else if (allocate_at_bottom &&
right_x >= anchor &&
right_x <= anchor + child_allocation.width / 2)
anchor -= priv->cur_page->allocation.width - tab_overlap;
}
if (!allocate_at_bottom)
anchor += child_allocation.width - tab_overlap;
else
anchor += tab_overlap;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (priv->operation != DRAG_OPERATION_REORDER ||
(priv->operation == DRAG_OPERATION_REORDER && page != priv->cur_page))
{
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
top_y >= anchor + child_allocation.height / 2 &&
top_y <= anchor + child_allocation.height)
anchor += priv->cur_page->allocation.height - tab_overlap;
else if (allocate_at_bottom &&
bottom_y >= anchor &&
bottom_y <= anchor + child_allocation.height / 2)
anchor -= priv->cur_page->allocation.height - tab_overlap;
}
if (!allocate_at_bottom)
anchor += child_allocation.height - tab_overlap;
else
anchor += tab_overlap;
}
break;
}
/* set child visible */
if (page->tab_label)
gtk_widget_set_child_visible (page->tab_label, TRUE);
}
/* Don't move the current tab past the last position during tabs reordering */
if (children &&
priv->operation == DRAG_OPERATION_REORDER &&
direction == STEP_NEXT)
{
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (allocate_at_bottom)
anchor -= priv->cur_page->allocation.width;
if ((!allocate_at_bottom && priv->drag_window_x > anchor) ||
(allocate_at_bottom && priv->drag_window_x < anchor))
priv->drag_window_x = anchor;
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (allocate_at_bottom)
anchor -= priv->cur_page->allocation.height;
if ((!allocate_at_bottom && priv->drag_window_y > anchor) ||
(allocate_at_bottom && priv->drag_window_y < anchor))
priv->drag_window_y = anchor;
break;
}
}
}
static void
gtk_notebook_pages_allocate (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children = NULL;
GList *last_child = NULL;
gboolean showarrow = FALSE;
gint tab_space, min, max, remaining_space;
gint expanded_tabs;
gboolean tab_allocations_changed = FALSE;
if (!priv->show_tabs || !priv->children || !priv->cur_page)
return;
min = max = tab_space = remaining_space = 0;
expanded_tabs = 1;
gtk_notebook_tab_space (notebook, &showarrow,
&min, &max, &tab_space);
gtk_notebook_calculate_shown_tabs (notebook, showarrow,
min, max, tab_space, &last_child,
&expanded_tabs, &remaining_space);
children = priv->first_tab;
gtk_notebook_calculate_tabs_allocation (notebook, &children, last_child,
showarrow, STEP_NEXT,
&remaining_space, &expanded_tabs, min, max);
if (children && children != last_child)
{
children = priv->children;
gtk_notebook_calculate_tabs_allocation (notebook, &children, last_child,
showarrow, STEP_PREV,
&remaining_space, &expanded_tabs, min, max);
}
children = priv->children;
while (children)
{
if (gtk_notebook_page_allocate (notebook, GTK_NOTEBOOK_PAGE (children)))
tab_allocations_changed = TRUE;
children = children->next;
}
if (!priv->first_tab)
priv->first_tab = priv->children;
if (tab_allocations_changed)
gtk_notebook_redraw_tabs (notebook);
}
static gboolean
gtk_notebook_page_allocate (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkWidget *widget = GTK_WIDGET (notebook);
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation child_allocation, label_allocation;
GtkRequisition tab_requisition;
GtkStyleContext *context;
gint padding;
gint tab_curvature, tab_overlap;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
gboolean tab_allocation_changed;
gboolean was_visible = page->tab_allocated_visible;
GtkBorder tab_padding;
GtkStateFlags state;
if (!page->tab_label ||
!gtk_widget_get_visible (page->tab_label) ||
!gtk_widget_get_child_visible (page->tab_label))
{
page->tab_allocated_visible = FALSE;
return was_visible;
}
context = gtk_widget_get_style_context (widget);
gtk_style_context_save (context);
state = notebook_tab_prepare_style_context (notebook, page, context, TRUE);
gtk_style_context_get_padding (context, state, &tab_padding);
gtk_widget_get_preferred_size (page->tab_label, &tab_requisition, NULL);
gtk_widget_style_get (widget,
"tab-curvature", &tab_curvature,
"tab-overlap", &tab_overlap,
NULL);
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
padding = tab_curvature;
if (page->fill)
{
child_allocation.x = tab_padding.left + padding;
child_allocation.width = MAX (1, (page->allocation.width -
tab_padding.left - tab_padding.right -
2 * (padding)));
child_allocation.x += page->allocation.x;
/* if we're drawing an inactive page, trim the allocation width
* for the children by the difference between tab-curvature
* and tab-overlap.
* if we're after the active tab, we need to trim the x
* coordinate of the allocation too, to position it after
* the end of the overlap.
*/
if (page != priv->cur_page && tab_overlap > tab_curvature + MIN (tab_padding.left, tab_padding.right))
{
if (gtk_notebook_page_num (notebook, page->child) >
gtk_notebook_page_num (notebook, priv->cur_page->child))
{
child_allocation.x += tab_overlap - tab_curvature - tab_padding.left;
child_allocation.width -= tab_overlap - tab_curvature - tab_padding.left;
}
else
{
child_allocation.width -= tab_overlap - tab_curvature - tab_padding.right;
}
}
}
else
{
child_allocation.x = page->allocation.x +
(page->allocation.width - tab_requisition.width) / 2;
child_allocation.width = tab_requisition.width;
}
child_allocation.y =
page->allocation.y + tab_padding.top;
child_allocation.height = MAX (1, (page->allocation.height -
tab_padding.top - tab_padding.bottom));
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
padding = tab_curvature;
if (page->fill)
{
child_allocation.y = tab_padding.top + padding;
child_allocation.height = MAX (1, (page->allocation.height -
tab_padding.bottom - tab_padding.top -
2 * padding));
child_allocation.y += page->allocation.y;
/* if we're drawing an inactive page, trim the allocation height
* for the children by the difference between tab-curvature
* and tab-overlap.
* if we're after the active tab, we need to trim the y
* coordinate of the allocation too, to position it after
* the end of the overlap.
*/
if (page != priv->cur_page && tab_overlap > tab_curvature + MIN (tab_padding.top, tab_padding.bottom))
{
if (gtk_notebook_page_num (notebook, page->child) >
gtk_notebook_page_num (notebook, priv->cur_page->child))
{
child_allocation.y += tab_overlap - tab_curvature - tab_padding.top;
child_allocation.height -= tab_overlap - tab_curvature - tab_padding.top;
}
else
{
child_allocation.height -= tab_overlap - tab_curvature - tab_padding.bottom;
}
}
}
else
{
child_allocation.y = page->allocation.y +
(page->allocation.height - tab_requisition.height) / 2;
child_allocation.height = tab_requisition.height;
}
child_allocation.x =
page->allocation.x + tab_padding.left;
child_allocation.width = MAX (1, (page->allocation.width -
tab_padding.left - tab_padding.right));
break;
default:
g_assert_not_reached ();
}
gtk_widget_get_allocation (page->tab_label, &label_allocation);
tab_allocation_changed = (child_allocation.x != label_allocation.x ||
child_allocation.y != label_allocation.y ||
child_allocation.width != label_allocation.width ||
child_allocation.height != label_allocation.height);
gtk_widget_size_allocate (page->tab_label, &child_allocation);
if (!was_visible)
{
page->tab_allocated_visible = TRUE;
tab_allocation_changed = TRUE;
}
gtk_style_context_restore (context);
return tab_allocation_changed;
}
static void
gtk_notebook_calc_tabs (GtkNotebook *notebook,
GList *start,
GList **end,
gint *tab_space,
guint direction)
{
GtkNotebookPage *page = NULL;
GList *children;
GList *last_calculated_child = NULL;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
if (!start)
return;
children = start;
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
while (children)
{
page = children->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
{
*tab_space -= page->requisition.width;
if (*tab_space < 0 || children == *end)
{
if (*tab_space < 0)
{
*tab_space = - (*tab_space +
page->requisition.width);
if (*tab_space == 0 && direction == STEP_PREV)
children = last_calculated_child;
*end = children;
}
return;
}
last_calculated_child = children;
}
if (direction == STEP_NEXT)
children = children->next;
else
children = children->prev;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
while (children)
{
page = children->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
{
*tab_space -= page->requisition.height;
if (*tab_space < 0 || children == *end)
{
if (*tab_space < 0)
{
*tab_space = - (*tab_space + page->requisition.height);
if (*tab_space == 0 && direction == STEP_PREV)
children = last_calculated_child;
*end = children;
}
return;
}
last_calculated_child = children;
}
if (direction == STEP_NEXT)
children = children->next;
else
children = children->prev;
}
break;
}
}
static void
gtk_notebook_update_tab_states (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
int pos;
pos = gtk_widget_path_length (gtk_widget_get_path (GTK_WIDGET (notebook))) - 1;
for (list = priv->children; list != NULL; list = list->next)
{
GtkNotebookPage *page = list->data;
if (page->tab_label)
{
GtkRegionFlags current_flags;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
/* FIXME: We should store these flags somewhere instead of poking
* the widget's path */
if (!gtk_widget_path_iter_has_region (gtk_widget_get_path (page->tab_label),
pos,
GTK_STYLE_REGION_TAB,
&current_flags)
|| current_flags != _gtk_notebook_get_tab_flags (notebook, page))
_gtk_widget_invalidate_style_context (page->tab_label, GTK_CSS_CHANGE_PARENT_STATE);
G_GNUC_END_IGNORE_DEPRECATIONS
}
}
}
/* Private GtkNotebook Page Switch Methods:
*
* gtk_notebook_real_switch_page
*/
static void
gtk_notebook_real_switch_page (GtkNotebook *notebook,
GtkWidget* child,
guint page_num)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list = gtk_notebook_find_child (notebook, GTK_WIDGET (child), NULL);
GtkNotebookPage *page = GTK_NOTEBOOK_PAGE (list);
gboolean child_has_focus;
if (priv->cur_page == page || !gtk_widget_get_visible (GTK_WIDGET (child)))
return;
/* save the value here, changing visibility changes focus */
child_has_focus = priv->child_has_focus;
if (priv->cur_page)
{
gtk_widget_set_child_visible (priv->cur_page->child, FALSE);
if (priv->cur_page->tab_label)
gtk_style_context_remove_class (gtk_widget_get_style_context (priv->cur_page->tab_label),
"active-page");
}
priv->cur_page = page;
if (page->tab_label)
gtk_style_context_add_class (gtk_widget_get_style_context (page->tab_label),
"active-page");
if (!priv->focus_tab ||
priv->focus_tab->data != (gpointer) priv->cur_page)
priv->focus_tab =
g_list_find (priv->children, priv->cur_page);
gtk_widget_set_child_visible (priv->cur_page->child, TRUE);
/* If the focus was on the previous page, move it to the first
* element on the new page, if possible, or if not, to the
* notebook itself.
*/
if (child_has_focus)
{
if (priv->cur_page->last_focus_child &&
gtk_widget_is_ancestor (priv->cur_page->last_focus_child, priv->cur_page->child))
gtk_widget_grab_focus (priv->cur_page->last_focus_child);
else
if (!gtk_widget_child_focus (priv->cur_page->child, GTK_DIR_TAB_FORWARD))
gtk_widget_grab_focus (GTK_WIDGET (notebook));
}
gtk_notebook_update_tab_states (notebook);
gtk_notebook_pages_allocate (notebook);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify (G_OBJECT (notebook), "page");
}
/* Private GtkNotebook Page Switch Functions:
*
* gtk_notebook_switch_page
* gtk_notebook_page_select
* gtk_notebook_switch_focus_tab
* gtk_notebook_menu_switch_page
*/
static void
gtk_notebook_switch_page (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
guint page_num;
if (priv->cur_page == page)
return;
page_num = g_list_index (priv->children, page);
g_signal_emit (notebook,
notebook_signals[SWITCH_PAGE],
0,
page->child,
page_num);
}
static gint
gtk_notebook_page_select (GtkNotebook *notebook,
gboolean move_focus)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GtkDirectionType dir = GTK_DIR_DOWN; /* Quiet GCC */
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
if (!priv->focus_tab)
return FALSE;
page = priv->focus_tab->data;
gtk_notebook_switch_page (notebook, page);
if (move_focus)
{
switch (tab_pos)
{
case GTK_POS_TOP:
dir = GTK_DIR_DOWN;
break;
case GTK_POS_BOTTOM:
dir = GTK_DIR_UP;
break;
case GTK_POS_LEFT:
dir = GTK_DIR_RIGHT;
break;
case GTK_POS_RIGHT:
dir = GTK_DIR_LEFT;
break;
}
if (gtk_widget_child_focus (page->child, dir))
return TRUE;
}
return FALSE;
}
static void
gtk_notebook_switch_focus_tab (GtkNotebook *notebook,
GList *new_child)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
if (priv->focus_tab == new_child)
return;
priv->focus_tab = new_child;
if (priv->scrollable)
gtk_notebook_redraw_arrows (notebook);
if (!priv->show_tabs || !priv->focus_tab)
return;
page = priv->focus_tab->data;
gtk_notebook_switch_page (notebook, page);
}
static void
gtk_notebook_menu_switch_page (GtkWidget *widget,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv;
GtkNotebook *notebook;
GtkWidget *parent;
GList *children;
guint page_num;
parent = gtk_widget_get_parent (widget);
notebook = GTK_NOTEBOOK (gtk_menu_get_attach_widget (GTK_MENU (parent)));
priv = notebook->priv;
if (priv->cur_page == page)
return;
page_num = 0;
children = priv->children;
while (children && children->data != page)
{
children = children->next;
page_num++;
}
g_signal_emit (notebook,
notebook_signals[SWITCH_PAGE],
0,
page->child,
page_num);
}
/* Private GtkNotebook Menu Functions:
*
* gtk_notebook_menu_item_create
* gtk_notebook_menu_label_unparent
* gtk_notebook_menu_detacher
*/
static void
gtk_notebook_menu_item_create (GtkNotebook *notebook,
GList *list)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GtkWidget *menu_item;
page = list->data;
if (page->default_menu)
{
if (GTK_IS_LABEL (page->tab_label))
page->menu_label = gtk_label_new (gtk_label_get_label (GTK_LABEL (page->tab_label)));
else
page->menu_label = gtk_label_new ("");
gtk_widget_set_halign (page->menu_label, GTK_ALIGN_START);
gtk_widget_set_valign (page->menu_label, GTK_ALIGN_CENTER);
}
gtk_widget_show (page->menu_label);
menu_item = gtk_menu_item_new ();
gtk_container_add (GTK_CONTAINER (menu_item), page->menu_label);
gtk_menu_shell_insert (GTK_MENU_SHELL (priv->menu), menu_item,
g_list_position (priv->children, list));
g_signal_connect (menu_item, "activate",
G_CALLBACK (gtk_notebook_menu_switch_page), page);
if (gtk_widget_get_visible (page->child))
gtk_widget_show (menu_item);
}
static void
gtk_notebook_menu_label_unparent (GtkWidget *widget,
gpointer data)
{
gtk_widget_unparent (gtk_bin_get_child (GTK_BIN (widget)));
_gtk_bin_set_child (GTK_BIN (widget), NULL);
}
static void
gtk_notebook_menu_detacher (GtkWidget *widget,
GtkMenu *menu)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
g_return_if_fail (priv->menu == (GtkWidget*) menu);
priv->menu = NULL;
}
/* Public GtkNotebook Page Insert/Remove Methods :
*
* gtk_notebook_append_page
* gtk_notebook_append_page_menu
* gtk_notebook_prepend_page
* gtk_notebook_prepend_page_menu
* gtk_notebook_insert_page
* gtk_notebook_insert_page_menu
* gtk_notebook_remove_page
*/
/**
* gtk_notebook_append_page:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
*
* Appends a page to @notebook.
*
* Returns: the index (starting from 0) of the appended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_append_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, NULL, -1);
}
/**
* gtk_notebook_append_page_menu:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (allow-none): the widget to use as a label for the
* page-switch menu, if that is enabled. If %NULL, and @tab_label
* is a #GtkLabel or %NULL, then the menu label will be a newly
* created label with the same text as @tab_label; if @tab_label
* is not a #GtkLabel, @menu_label must be specified if the
* page-switch menu is to be used.
*
* Appends a page to @notebook, specifying the widget to use as the
* label in the popup menu.
*
* Returns: the index (starting from 0) of the appended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_append_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
g_return_val_if_fail (menu_label == NULL || GTK_IS_WIDGET (menu_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, menu_label, -1);
}
/**
* gtk_notebook_prepend_page:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
*
* Prepends a page to @notebook.
*
* Returns: the index (starting from 0) of the prepended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_prepend_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, NULL, 0);
}
/**
* gtk_notebook_prepend_page_menu:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (allow-none): the widget to use as a label for the
* page-switch menu, if that is enabled. If %NULL, and @tab_label
* is a #GtkLabel or %NULL, then the menu label will be a newly
* created label with the same text as @tab_label; if @tab_label
* is not a #GtkLabel, @menu_label must be specified if the
* page-switch menu is to be used.
*
* Prepends a page to @notebook, specifying the widget to use as the
* label in the popup menu.
*
* Returns: the index (starting from 0) of the prepended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_prepend_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
g_return_val_if_fail (menu_label == NULL || GTK_IS_WIDGET (menu_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, menu_label, 0);
}
/**
* gtk_notebook_insert_page:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @position: the index (starting at 0) at which to insert the page,
* or -1 to append the page after all other pages
*
* Insert a page into @notebook at the given position.
*
* Returns: the index (starting from 0) of the inserted
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
gint position)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, NULL, position);
}
static gint
gtk_notebook_page_compare_tab (gconstpointer a,
gconstpointer b)
{
return (((GtkNotebookPage *) a)->tab_label != b);
}
static gboolean
gtk_notebook_mnemonic_activate_switch_page (GtkWidget *child,
gboolean overload,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
list = g_list_find_custom (priv->children, child,
gtk_notebook_page_compare_tab);
if (list)
{
GtkNotebookPage *page = list->data;
gtk_widget_grab_focus (GTK_WIDGET (notebook)); /* Do this first to avoid focusing new page */
gtk_notebook_switch_page (notebook, page);
focus_tabs_in (notebook);
}
return TRUE;
}
/**
* gtk_notebook_insert_page_menu:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (allow-none): the widget to use as a label for the
* page-switch menu, if that is enabled. If %NULL, and @tab_label
* is a #GtkLabel or %NULL, then the menu label will be a newly
* created label with the same text as @tab_label; if @tab_label
* is not a #GtkLabel, @menu_label must be specified if the
* page-switch menu is to be used.
* @position: the index (starting at 0) at which to insert the page,
* or -1 to append the page after all other pages.
*
* Insert a page into @notebook at the given position, specifying
* the widget to use as the label in the popup menu.
*
* Returns: the index (starting from 0) of the inserted
* page in the notebook
*/
gint
gtk_notebook_insert_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position)
{
GtkNotebookClass *class;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
g_return_val_if_fail (menu_label == NULL || GTK_IS_WIDGET (menu_label), -1);
class = GTK_NOTEBOOK_GET_CLASS (notebook);
return (class->insert_page) (notebook, child, tab_label, menu_label, position);
}
/**
* gtk_notebook_remove_page:
* @notebook: a #GtkNotebook
* @page_num: the index of a notebook page, starting
* from 0. If -1, the last page will be removed.
*
* Removes a page from the notebook given its index
* in the notebook.
*/
void
gtk_notebook_remove_page (GtkNotebook *notebook,
gint page_num)
{
GtkNotebookPrivate *priv;
GList *list = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (page_num >= 0)
list = g_list_nth (priv->children, page_num);
else
list = g_list_last (priv->children);
if (list)
gtk_container_remove (GTK_CONTAINER (notebook),
((GtkNotebookPage *) list->data)->child);
}
/* Public GtkNotebook Page Switch Methods :
* gtk_notebook_get_current_page
* gtk_notebook_page_num
* gtk_notebook_set_current_page
* gtk_notebook_next_page
* gtk_notebook_prev_page
*/
/**
* gtk_notebook_get_current_page:
* @notebook: a #GtkNotebook
*
* Returns the page number of the current page.
*
* Returns: the index (starting from 0) of the current
* page in the notebook. If the notebook has no pages,
* then -1 will be returned.
*/
gint
gtk_notebook_get_current_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
priv = notebook->priv;
if (!priv->cur_page)
return -1;
return g_list_index (priv->children, priv->cur_page);
}
/**
* gtk_notebook_get_nth_page:
* @notebook: a #GtkNotebook
* @page_num: the index of a page in the notebook, or -1
* to get the last page
*
* Returns the child widget contained in page number @page_num.
*
* Returns: (transfer none): the child widget, or %NULL
* if @page_num is out of bounds
*/
GtkWidget*
gtk_notebook_get_nth_page (GtkNotebook *notebook,
gint page_num)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
priv = notebook->priv;
if (page_num >= 0)
list = g_list_nth (priv->children, page_num);
else
list = g_list_last (priv->children);
if (list)
{
page = list->data;
return page->child;
}
return NULL;
}
/**
* gtk_notebook_get_n_pages:
* @notebook: a #GtkNotebook
*
* Gets the number of pages in a notebook.
*
* Returns: the number of pages in the notebook
*
* Since: 2.2
*/
gint
gtk_notebook_get_n_pages (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), 0);
priv = notebook->priv;
return g_list_length (priv->children);
}
/**
* gtk_notebook_page_num:
* @notebook: a #GtkNotebook
* @child: a #GtkWidget
*
* Finds the index of the page which contains the given child
* widget.
*
* Returns: the index of the page containing @child, or
* -1 if @child is not in the notebook
*/
gint
gtk_notebook_page_num (GtkNotebook *notebook,
GtkWidget *child)
{
GtkNotebookPrivate *priv;
GList *children;
gint num;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
priv = notebook->priv;
num = 0;
children = priv->children;
while (children)
{
GtkNotebookPage *page = children->data;
if (page->child == child)
return num;
children = children->next;
num++;
}
return -1;
}
/**
* gtk_notebook_set_current_page:
* @notebook: a #GtkNotebook
* @page_num: index of the page to switch to, starting from 0.
* If negative, the last page will be used. If greater
* than the number of pages in the notebook, nothing
* will be done.
*
* Switches to the page number @page_num.
*
* Note that due to historical reasons, GtkNotebook refuses
* to switch to a page unless the child widget is visible.
* Therefore, it is recommended to show child widgets before
* adding them to a notebook.
*/
void
gtk_notebook_set_current_page (GtkNotebook *notebook,
gint page_num)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (page_num < 0)
page_num = g_list_length (priv->children) - 1;
list = g_list_nth (priv->children, page_num);
if (list)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (list));
g_object_notify (G_OBJECT (notebook), "page");
}
/**
* gtk_notebook_next_page:
* @notebook: a #GtkNotebook
*
* Switches to the next page. Nothing happens if the current page is
* the last page.
*/
void
gtk_notebook_next_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
list = g_list_find (priv->children, priv->cur_page);
if (!list)
return;
list = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
if (!list)
return;
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (list));
}
/**
* gtk_notebook_prev_page:
* @notebook: a #GtkNotebook
*
* Switches to the previous page. Nothing happens if the current page
* is the first page.
*/
void
gtk_notebook_prev_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
list = g_list_find (priv->children, priv->cur_page);
if (!list)
return;
list = gtk_notebook_search_page (notebook, list, STEP_PREV, TRUE);
if (!list)
return;
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE (list));
}
/* Public GtkNotebook/Tab Style Functions
*
* gtk_notebook_set_show_border
* gtk_notebook_get_show_border
* gtk_notebook_set_show_tabs
* gtk_notebook_get_show_tabs
* gtk_notebook_set_tab_pos
* gtk_notebook_get_tab_pos
* gtk_notebook_set_scrollable
* gtk_notebook_get_scrollable
* gtk_notebook_get_tab_hborder
* gtk_notebook_get_tab_vborder
*/
/**
* gtk_notebook_set_show_border:
* @notebook: a #GtkNotebook
* @show_border: %TRUE if a bevel should be drawn around the notebook
*
* Sets whether a bevel will be drawn around the notebook pages.
* This only has a visual effect when the tabs are not shown.
* See gtk_notebook_set_show_tabs().
*/
void
gtk_notebook_set_show_border (GtkNotebook *notebook,
gboolean show_border)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (priv->show_border != show_border)
{
priv->show_border = show_border;
if (gtk_widget_get_visible (GTK_WIDGET (notebook)))
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify (G_OBJECT (notebook), "show-border");
}
}
/**
* gtk_notebook_get_show_border:
* @notebook: a #GtkNotebook
*
* Returns whether a bevel will be drawn around the notebook pages.
* See gtk_notebook_set_show_border().
*
* Returns: %TRUE if the bevel is drawn
*/
gboolean
gtk_notebook_get_show_border (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return notebook->priv->show_border;
}
/**
* gtk_notebook_set_show_tabs:
* @notebook: a #GtkNotebook
* @show_tabs: %TRUE if the tabs should be shown
*
* Sets whether to show the tabs for the notebook or not.
*/
void
gtk_notebook_set_show_tabs (GtkNotebook *notebook,
gboolean show_tabs)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GtkStyleContext *context;
GList *children;
gint i;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
show_tabs = show_tabs != FALSE;
if (priv->show_tabs == show_tabs)
return;
priv->show_tabs = show_tabs;
children = priv->children;
context = gtk_widget_get_style_context (GTK_WIDGET (notebook));
if (!show_tabs)
{
gtk_widget_set_can_focus (GTK_WIDGET (notebook), FALSE);
while (children)
{
page = children->data;
children = children->next;
if (page->default_tab)
{
gtk_widget_destroy (page->tab_label);
page->tab_label = NULL;
}
else
gtk_widget_hide (page->tab_label);
}
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_NOTEBOOK);
}
else
{
gtk_widget_set_can_focus (GTK_WIDGET (notebook), TRUE);
gtk_notebook_update_labels (notebook);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_NOTEBOOK);
}
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
gtk_widget_set_child_visible (priv->action_widget[i], show_tabs);
}
gtk_widget_reset_style (GTK_WIDGET (notebook));
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify (G_OBJECT (notebook), "show-tabs");
}
/**
* gtk_notebook_get_show_tabs:
* @notebook: a #GtkNotebook
*
* Returns whether the tabs of the notebook are shown.
* See gtk_notebook_set_show_tabs().
*
* Returns: %TRUE if the tabs are shown
*/
gboolean
gtk_notebook_get_show_tabs (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return notebook->priv->show_tabs;
}
/**
* gtk_notebook_set_tab_pos:
* @notebook: a #GtkNotebook.
* @pos: the edge to draw the tabs at
*
* Sets the edge at which the tabs for switching pages in the
* notebook are drawn.
*/
void
gtk_notebook_set_tab_pos (GtkNotebook *notebook,
GtkPositionType pos)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (priv->tab_pos != pos)
{
priv->tab_pos = pos;
if (gtk_widget_get_visible (GTK_WIDGET (notebook)))
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify (G_OBJECT (notebook), "tab-pos");
}
}
/**
* gtk_notebook_get_tab_pos:
* @notebook: a #GtkNotebook
*
* Gets the edge at which the tabs for switching pages in the
* notebook are drawn.
*
* Returns: the edge at which the tabs are drawn
*/
GtkPositionType
gtk_notebook_get_tab_pos (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), GTK_POS_TOP);
return notebook->priv->tab_pos;
}
/**
* gtk_notebook_set_scrollable:
* @notebook: a #GtkNotebook
* @scrollable: %TRUE if scroll arrows should be added
*
* Sets whether the tab label area will have arrows for
* scrolling if there are too many tabs to fit in the area.
*/
void
gtk_notebook_set_scrollable (GtkNotebook *notebook,
gboolean scrollable)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
scrollable = (scrollable != FALSE);
if (scrollable != priv->scrollable)
{
priv->scrollable = scrollable;
if (gtk_widget_get_visible (GTK_WIDGET (notebook)))
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify (G_OBJECT (notebook), "scrollable");
}
}
/**
* gtk_notebook_get_scrollable:
* @notebook: a #GtkNotebook
*
* Returns whether the tab label area has arrows for scrolling.
* See gtk_notebook_set_scrollable().
*
* Returns: %TRUE if arrows for scrolling are present
*/
gboolean
gtk_notebook_get_scrollable (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return notebook->priv->scrollable;
}
/**
* gtk_notebook_get_tab_hborder:
* @notebook: a #GtkNotebook
*
* Returns the horizontal width of a tab border.
*
* Returns: horizontal width of a tab border
*
* Since: 2.22
*
* Deprecated: 3.4: this function returns zero
*/
guint16
gtk_notebook_get_tab_hborder (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return 0;
}
/**
* gtk_notebook_get_tab_vborder:
* @notebook: a #GtkNotebook
*
* Returns the vertical width of a tab border.
*
* Returns: vertical width of a tab border
*
* Since: 2.22
*
* Deprecated: 3.4: this function returns zero
*/
guint16
gtk_notebook_get_tab_vborder (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return 0;
}
/* Public GtkNotebook Popup Menu Methods:
*
* gtk_notebook_popup_enable
* gtk_notebook_popup_disable
*/
/**
* gtk_notebook_popup_enable:
* @notebook: a #GtkNotebook
*
* Enables the popup menu: if the user clicks with the right
* mouse button on the tab labels, a menu with all the pages
* will be popped up.
*/
void
gtk_notebook_popup_enable (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (priv->menu)
return;
priv->menu = gtk_menu_new ();
gtk_style_context_add_class (gtk_widget_get_style_context (priv->menu),
GTK_STYLE_CLASS_CONTEXT_MENU);
for (list = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, FALSE);
list;
list = gtk_notebook_search_page (notebook, list, STEP_NEXT, FALSE))
gtk_notebook_menu_item_create (notebook, list);
gtk_notebook_update_labels (notebook);
gtk_menu_attach_to_widget (GTK_MENU (priv->menu),
GTK_WIDGET (notebook),
gtk_notebook_menu_detacher);
g_object_notify (G_OBJECT (notebook), "enable-popup");
}
/**
* gtk_notebook_popup_disable:
* @notebook: a #GtkNotebook
*
* Disables the popup menu.
*/
void
gtk_notebook_popup_disable (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (!priv->menu)
return;
gtk_container_foreach (GTK_CONTAINER (priv->menu),
(GtkCallback) gtk_notebook_menu_label_unparent, NULL);
gtk_widget_destroy (priv->menu);
g_object_notify (G_OBJECT (notebook), "enable-popup");
}
/* Public GtkNotebook Page Properties Functions:
*
* gtk_notebook_get_tab_label
* gtk_notebook_set_tab_label
* gtk_notebook_set_tab_label_text
* gtk_notebook_get_menu_label
* gtk_notebook_set_menu_label
* gtk_notebook_set_menu_label_text
* gtk_notebook_get_tab_reorderable
* gtk_notebook_set_tab_reorderable
* gtk_notebook_get_tab_detachable
* gtk_notebook_set_tab_detachable
*/
/**
* gtk_notebook_get_tab_label:
* @notebook: a #GtkNotebook
* @child: the page
*
* Returns the tab label widget for the page @child.
* %NULL is returned if @child is not in @notebook or
* if no tab label has specifically been set for @child.
*
* Returns: (transfer none): the tab label
*/
GtkWidget *
gtk_notebook_get_tab_label (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return NULL;
if (GTK_NOTEBOOK_PAGE (list)->default_tab)
return NULL;
return GTK_NOTEBOOK_PAGE (list)->tab_label;
}
/**
* gtk_notebook_set_tab_label:
* @notebook: a #GtkNotebook
* @child: the page
* @tab_label: (allow-none): the tab label widget to use, or %NULL
* for default tab label
*
* Changes the tab label for @child.
* If %NULL is specified for @tab_label, then the page will
* have the label “page N”.
*/
void
gtk_notebook_set_tab_label (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return;
/* a NULL pointer indicates a default_tab setting, otherwise
* we need to set the associated label
*/
page = list->data;
if (page->tab_label == tab_label)
return;
gtk_notebook_remove_tab_label (notebook, page);
if (tab_label)
{
page->default_tab = FALSE;
page->tab_label = tab_label;
gtk_widget_set_parent (page->tab_label, GTK_WIDGET (notebook));
}
else
{
page->default_tab = TRUE;
page->tab_label = NULL;
if (priv->show_tabs)
{
gchar string[32];
g_snprintf (string, sizeof(string), _("Page %u"),
g_list_position (priv->children, list));
page->tab_label = gtk_label_new (string);
gtk_widget_set_parent (page->tab_label, GTK_WIDGET (notebook));
}
}
if (page->tab_label)
page->mnemonic_activate_signal =
g_signal_connect (page->tab_label,
"mnemonic-activate",
G_CALLBACK (gtk_notebook_mnemonic_activate_switch_page),
notebook);
if (priv->cur_page == page)
gtk_style_context_add_class (gtk_widget_get_style_context (page->tab_label),
"active-page");
if (priv->prelight_tab == page)
gtk_style_context_add_class (gtk_widget_get_style_context (page->tab_label),
"prelight-page");
if (priv->show_tabs && gtk_widget_get_visible (child))
{
gtk_widget_show (page->tab_label);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
}
gtk_notebook_update_tab_states (notebook);
gtk_widget_child_notify (child, "tab-label");
}
/**
* gtk_notebook_set_tab_label_text:
* @notebook: a #GtkNotebook
* @child: the page
* @tab_text: the label text
*
* Creates a new label and sets it as the tab label for the page
* containing @child.
*/
void
gtk_notebook_set_tab_label_text (GtkNotebook *notebook,
GtkWidget *child,
const gchar *tab_text)
{
GtkWidget *tab_label = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (tab_text)
tab_label = gtk_label_new (tab_text);
gtk_notebook_set_tab_label (notebook, child, tab_label);
gtk_widget_child_notify (child, "tab-label");
}
/**
* gtk_notebook_get_tab_label_text:
* @notebook: a #GtkNotebook
* @child: a widget contained in a page of @notebook
*
* Retrieves the text of the tab label for the page containing
* @child.
*
* Returns: the text of the tab label, or %NULL if the
* tab label widget is not a #GtkLabel. The string is owned
* by the widget and must not be freed.
*/
const gchar *
gtk_notebook_get_tab_label_text (GtkNotebook *notebook,
GtkWidget *child)
{
GtkWidget *tab_label;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
tab_label = gtk_notebook_get_tab_label (notebook, child);
if (GTK_IS_LABEL (tab_label))
return gtk_label_get_text (GTK_LABEL (tab_label));
else
return NULL;
}
/**
* gtk_notebook_get_menu_label:
* @notebook: a #GtkNotebook
* @child: a widget contained in a page of @notebook
*
* Retrieves the menu label widget of the page containing @child.
*
* Returns: (transfer none): the menu label, or %NULL if the
* notebook page does not have a menu label other than the
* default (the tab label).
*/
GtkWidget*
gtk_notebook_get_menu_label (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return NULL;
if (GTK_NOTEBOOK_PAGE (list)->default_menu)
return NULL;
return GTK_NOTEBOOK_PAGE (list)->menu_label;
}
/**
* gtk_notebook_set_menu_label:
* @notebook: a #GtkNotebook
* @child: the child widget
* @menu_label: (allow-none): the menu label, or %NULL for default
*
* Changes the menu label for the page containing @child.
*/
void
gtk_notebook_set_menu_label (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *menu_label)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return;
page = list->data;
if (page->menu_label)
{
if (priv->menu)
gtk_container_remove (GTK_CONTAINER (priv->menu),
gtk_widget_get_parent (page->menu_label));
if (!page->default_menu)
g_object_unref (page->menu_label);
}
if (menu_label)
{
page->menu_label = menu_label;
g_object_ref_sink (page->menu_label);
page->default_menu = FALSE;
}
else
page->default_menu = TRUE;
if (priv->menu)
gtk_notebook_menu_item_create (notebook, list);
gtk_widget_child_notify (child, "menu-label");
}
/**
* gtk_notebook_set_menu_label_text:
* @notebook: a #GtkNotebook
* @child: the child widget
* @menu_text: the label text
*
* Creates a new label and sets it as the menu label of @child.
*/
void
gtk_notebook_set_menu_label_text (GtkNotebook *notebook,
GtkWidget *child,
const gchar *menu_text)
{
GtkWidget *menu_label = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (menu_text)
{
menu_label = gtk_label_new (menu_text);
gtk_widget_set_halign (menu_label, GTK_ALIGN_START);
gtk_widget_set_valign (menu_label, GTK_ALIGN_CENTER);
}
gtk_notebook_set_menu_label (notebook, child, menu_label);
gtk_widget_child_notify (child, "menu-label");
}
/**
* gtk_notebook_get_menu_label_text:
* @notebook: a #GtkNotebook
* @child: the child widget of a page of the notebook.
*
* Retrieves the text of the menu label for the page containing
* @child.
*
* Returns: the text of the tab label, or %NULL if the
* widget does not have a menu label other than the default
* menu label, or the menu label widget is not a #GtkLabel.
* The string is owned by the widget and must not be freed.
*/
const gchar *
gtk_notebook_get_menu_label_text (GtkNotebook *notebook,
GtkWidget *child)
{
GtkWidget *menu_label;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
menu_label = gtk_notebook_get_menu_label (notebook, child);
if (GTK_IS_LABEL (menu_label))
return gtk_label_get_text (GTK_LABEL (menu_label));
else
return NULL;
}
/* Helper function called when pages are reordered
*/
static void
gtk_notebook_child_reordered (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->menu)
{
GtkWidget *menu_item;
menu_item = gtk_widget_get_parent (page->menu_label);
gtk_container_remove (GTK_CONTAINER (menu_item), page->menu_label);
gtk_container_remove (GTK_CONTAINER (priv->menu), menu_item);
gtk_notebook_menu_item_create (notebook, g_list_find (priv->children, page));
}
gtk_notebook_update_tab_states (notebook);
gtk_notebook_update_labels (notebook);
}
static void
gtk_notebook_set_tab_label_packing (GtkNotebook *notebook,
GtkWidget *child,
gboolean expand,
gboolean fill)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return;
page = list->data;
expand = expand != FALSE;
fill = fill != FALSE;
if (page->expand == expand && page->fill == fill)
return;
gtk_widget_freeze_child_notify (child);
page->expand = expand;
gtk_widget_child_notify (child, "tab-expand");
page->fill = fill;
gtk_widget_child_notify (child, "tab-fill");
gtk_widget_child_notify (child, "position");
if (priv->show_tabs)
gtk_widget_queue_resize (GTK_WIDGET (notebook));
gtk_widget_thaw_child_notify (child);
}
static void
gtk_notebook_query_tab_label_packing (GtkNotebook *notebook,
GtkWidget *child,
gboolean *expand,
gboolean *fill)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
list = CHECK_FIND_CHILD (notebook, child);
g_return_if_fail (list != NULL);
if (expand)
*expand = GTK_NOTEBOOK_PAGE (list)->expand;
if (fill)
*fill = GTK_NOTEBOOK_PAGE (list)->fill;
}
/**
* gtk_notebook_reorder_child:
* @notebook: a #GtkNotebook
* @child: the child to move
* @position: the new position, or -1 to move to the end
*
* Reorders the page containing @child, so that it appears in position
* @position. If @position is greater than or equal to the number of
* children in the list or negative, @child will be moved to the end
* of the list.
*/
void
gtk_notebook_reorder_child (GtkNotebook *notebook,
GtkWidget *child,
gint position)
{
GtkNotebookPrivate *priv;
GList *list, *new_list;
GtkNotebookPage *page;
gint old_pos;
gint max_pos;
gint i;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return;
max_pos = g_list_length (priv->children) - 1;
if (position < 0 || position > max_pos)
position = max_pos;
old_pos = g_list_position (priv->children, list);
if (old_pos == position)
return;
page = list->data;
priv->children = g_list_delete_link (priv->children, list);
priv->children = g_list_insert (priv->children, page, position);
new_list = g_list_nth (priv->children, position);
/* Fix up GList references in GtkNotebook structure */
if (priv->first_tab == list)
priv->first_tab = new_list;
if (priv->focus_tab == list)
priv->focus_tab = new_list;
gtk_widget_freeze_child_notify (child);
/* Move around the menu items if necessary */
gtk_notebook_child_reordered (notebook, page);
for (list = priv->children, i = 0; list; list = list->next, i++)
{
if (MIN (old_pos, position) <= i && i <= MAX (old_pos, position))
gtk_widget_child_notify (((GtkNotebookPage *) list->data)->child, "position");
}
if (priv->show_tabs)
gtk_notebook_pages_allocate (notebook);
gtk_widget_thaw_child_notify (child);
g_signal_emit (notebook,
notebook_signals[PAGE_REORDERED],
0,
child,
position);
}
/**
* gtk_notebook_set_group_name:
* @notebook: a #GtkNotebook
* @group_name: (allow-none): the name of the notebook group,
* or %NULL to unset it
*
* Sets a group name for @notebook.
*
* Notebooks with the same name will be able to exchange tabs
* via drag and drop. A notebook with a %NULL group name will
* not be able to exchange tabs with any other notebook.
*
* Since: 2.24
*/
void
gtk_notebook_set_group_name (GtkNotebook *notebook,
const gchar *group_name)
{
GtkNotebookPrivate *priv;
GQuark group;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
group = g_quark_from_string (group_name);
if (priv->group != group)
{
priv->group = group;
g_object_notify (G_OBJECT (notebook), "group-name");
}
}
/**
* gtk_notebook_get_group_name:
* @notebook: a #GtkNotebook
*
* Gets the current group name for @notebook.
*
* Returns: (transfer none): the group name,
* or %NULL if none is set.
*
* Since: 2.24
*/
const gchar *
gtk_notebook_get_group_name (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
return g_quark_to_string (notebook->priv->group);
}
/**
* gtk_notebook_get_tab_reorderable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
*
* Gets whether the tab can be reordered via drag and drop or not.
*
* Returns: %TRUE if the tab is reorderable.
*
* Since: 2.10
*/
gboolean
gtk_notebook_get_tab_reorderable (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (child), FALSE);
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return FALSE;
return GTK_NOTEBOOK_PAGE (list)->reorderable;
}
/**
* gtk_notebook_set_tab_reorderable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
* @reorderable: whether the tab is reorderable or not
*
* Sets whether the notebook tab can be reordered
* via drag and drop or not.
*
* Since: 2.10
*/
void
gtk_notebook_set_tab_reorderable (GtkNotebook *notebook,
GtkWidget *child,
gboolean reorderable)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return;
reorderable = reorderable != FALSE;
if (GTK_NOTEBOOK_PAGE (list)->reorderable != reorderable)
{
GTK_NOTEBOOK_PAGE (list)->reorderable = reorderable;
gtk_widget_child_notify (child, "reorderable");
}
}
/**
* gtk_notebook_get_tab_detachable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
*
* Returns whether the tab contents can be detached from @notebook.
*
* Returns: %TRUE if the tab is detachable.
*
* Since: 2.10
*/
gboolean
gtk_notebook_get_tab_detachable (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (child), FALSE);
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return FALSE;
return GTK_NOTEBOOK_PAGE (list)->detachable;
}
/**
* gtk_notebook_set_tab_detachable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
* @detachable: whether the tab is detachable or not
*
* Sets whether the tab can be detached from @notebook to another
* notebook or widget.
*
* Note that 2 notebooks must share a common group identificator
* (see gtk_notebook_set_group_name()) to allow automatic tabs
* interchange between them.
*
* If you want a widget to interact with a notebook through DnD
* (i.e.: accept dragged tabs from it) it must be set as a drop
* destination and accept the target “GTK_NOTEBOOK_TAB”. The notebook
* will fill the selection with a GtkWidget** pointing to the child
* widget that corresponds to the dropped tab.
*
* Note that you should use gtk_notebook_detach_tab() instead
* of gtk_container_remove() if you want to remove the tab from
* the source notebook as part of accepting a drop. Otherwise,
* the source notebook will think that the dragged tab was
* removed from underneath the ongoing drag operation, and
* will initiate a drag cancel animation.
*
* |[<!-- language="C" -->
* static void
* on_drag_data_received (GtkWidget *widget,
* GdkDragContext *context,
* gint x,
* gint y,
* GtkSelectionData *data,
* guint info,
* guint time,
* gpointer user_data)
* {
* GtkWidget *notebook;
* GtkWidget **child;
*
* notebook = gtk_drag_get_source_widget (context);
* child = (void*) gtk_selection_data_get_data (data);
*
* process_widget (*child);
* gtk_notebook_detach_tab (GTK_NOTEBOOK (notebook), *child);
* }
* ]|
*
* If you want a notebook to accept drags from other widgets,
* you will have to set your own DnD code to do it.
*
* Since: 2.10
*/
void
gtk_notebook_set_tab_detachable (GtkNotebook *notebook,
GtkWidget *child,
gboolean detachable)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
list = CHECK_FIND_CHILD (notebook, child);
if (!list)
return;
detachable = detachable != FALSE;
if (GTK_NOTEBOOK_PAGE (list)->detachable != detachable)
{
GTK_NOTEBOOK_PAGE (list)->detachable = detachable;
gtk_widget_child_notify (child, "detachable");
}
}
/**
* gtk_notebook_get_action_widget:
* @notebook: a #GtkNotebook
* @pack_type: pack type of the action widget to receive
*
* Gets one of the action widgets. See gtk_notebook_set_action_widget().
*
* Returns: (transfer none): The action widget with the given @pack_type
* or %NULL when this action widget has not been set
*
* Since: 2.20
*/
GtkWidget*
gtk_notebook_get_action_widget (GtkNotebook *notebook,
GtkPackType pack_type)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
return notebook->priv->action_widget[pack_type];
}
/**
* gtk_notebook_set_action_widget:
* @notebook: a #GtkNotebook
* @widget: a #GtkWidget
* @pack_type: pack type of the action widget
*
* Sets @widget as one of the action widgets. Depending on the pack type
* the widget will be placed before or after the tabs. You can use
* a #GtkBox if you need to pack more than one widget on the same side.
*
* Note that action widgets are “internal” children of the notebook and thus
* not included in the list returned from gtk_container_foreach().
*
* Since: 2.20
*/
void
gtk_notebook_set_action_widget (GtkNotebook *notebook,
GtkWidget *widget,
GtkPackType pack_type)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (!widget || GTK_IS_WIDGET (widget));
g_return_if_fail (!widget || gtk_widget_get_parent (widget) == NULL);
priv = notebook->priv;
if (priv->action_widget[pack_type])
gtk_widget_unparent (priv->action_widget[pack_type]);
priv->action_widget[pack_type] = widget;
if (widget)
{
gtk_widget_set_child_visible (widget, priv->show_tabs);
gtk_widget_set_parent (widget, GTK_WIDGET (notebook));
}
gtk_widget_queue_resize (GTK_WIDGET (notebook));
}
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