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ca06216f2087c82512b999d3c28b10dd264b4619
gtk3/gtk/gtkexpander.c
Björn Lindqvist 3fb6fbd801 clarify bugfix in 2.14 for gtk_expander_get_label 
Updated documentation for gtk_expander_get_label to clarify that
it was changed in 2.14.
2009-04-07 12:54:15 -04:00

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/* GTK - The GIMP Toolkit
*
* Copyright (C) 2003 Sun Microsystems, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Mark McLoughlin <mark@skynet.ie>
*/
#include "config.h"
#include <string.h>
#include "gtkexpander.h"
#include "gtklabel.h"
#include "gtkbuildable.h"
#include "gtkcontainer.h"
#include "gtkmarshalers.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include <gdk/gdkkeysyms.h>
#include "gtkdnd.h"
#include "gtkalias.h"
#define GTK_EXPANDER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_EXPANDER, GtkExpanderPrivate))
#define DEFAULT_EXPANDER_SIZE 10
#define DEFAULT_EXPANDER_SPACING 2
enum
{
PROP_0,
PROP_EXPANDED,
PROP_LABEL,
PROP_USE_UNDERLINE,
PROP_USE_MARKUP,
PROP_SPACING,
PROP_LABEL_WIDGET
};
struct _GtkExpanderPrivate
{
GtkWidget *label_widget;
GdkWindow *event_window;
gint spacing;
GtkExpanderStyle expander_style;
guint animation_timeout;
guint expand_timer;
guint expanded : 1;
guint use_underline : 1;
guint use_markup : 1;
guint button_down : 1;
guint prelight : 1;
};
static void gtk_expander_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_expander_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_expander_destroy (GtkObject *object);
static void gtk_expander_realize (GtkWidget *widget);
static void gtk_expander_unrealize (GtkWidget *widget);
static void gtk_expander_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_expander_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_expander_map (GtkWidget *widget);
static void gtk_expander_unmap (GtkWidget *widget);
static gboolean gtk_expander_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean gtk_expander_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_expander_button_release (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_expander_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_expander_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_expander_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_expander_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static void gtk_expander_state_changed (GtkWidget *widget,
GtkStateType previous_state);
static gboolean gtk_expander_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_expander_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static void gtk_expander_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_expander_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_expander_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_expander_activate (GtkExpander *expander);
static void get_expander_bounds (GtkExpander *expander,
GdkRectangle *rect);
/* GtkBuildable */
static void gtk_expander_buildable_init (GtkBuildableIface *iface);
static void gtk_expander_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
G_DEFINE_TYPE_WITH_CODE (GtkExpander, gtk_expander, GTK_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_expander_buildable_init))
static void
gtk_expander_class_init (GtkExpanderClass *klass)
{
GObjectClass *gobject_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
gobject_class = (GObjectClass *) klass;
object_class = (GtkObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
container_class = (GtkContainerClass *) klass;
gobject_class->set_property = gtk_expander_set_property;
gobject_class->get_property = gtk_expander_get_property;
object_class->destroy = gtk_expander_destroy;
widget_class->realize = gtk_expander_realize;
widget_class->unrealize = gtk_expander_unrealize;
widget_class->size_request = gtk_expander_size_request;
widget_class->size_allocate = gtk_expander_size_allocate;
widget_class->map = gtk_expander_map;
widget_class->unmap = gtk_expander_unmap;
widget_class->expose_event = gtk_expander_expose;
widget_class->button_press_event = gtk_expander_button_press;
widget_class->button_release_event = gtk_expander_button_release;
widget_class->enter_notify_event = gtk_expander_enter_notify;
widget_class->leave_notify_event = gtk_expander_leave_notify;
widget_class->focus = gtk_expander_focus;
widget_class->grab_notify = gtk_expander_grab_notify;
widget_class->state_changed = gtk_expander_state_changed;
widget_class->drag_motion = gtk_expander_drag_motion;
widget_class->drag_leave = gtk_expander_drag_leave;
container_class->add = gtk_expander_add;
container_class->remove = gtk_expander_remove;
container_class->forall = gtk_expander_forall;
klass->activate = gtk_expander_activate;
g_type_class_add_private (klass, sizeof (GtkExpanderPrivate));
g_object_class_install_property (gobject_class,
PROP_EXPANDED,
g_param_spec_boolean ("expanded",
P_("Expanded"),
P_("Whether the expander has been opened to reveal the child widget"),
FALSE,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_LABEL,
g_param_spec_string ("label",
P_("Label"),
P_("Text of the expander's label"),
NULL,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_USE_UNDERLINE,
g_param_spec_boolean ("use-underline",
P_("Use underline"),
P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
FALSE,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_USE_MARKUP,
g_param_spec_boolean ("use-markup",
P_("Use markup"),
P_("The text of the label includes XML markup. See pango_parse_markup()"),
FALSE,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_SPACING,
g_param_spec_int ("spacing",
P_("Spacing"),
P_("Space to put between the label and the child"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_LABEL_WIDGET,
g_param_spec_object ("label-widget",
P_("Label widget"),
P_("A widget to display in place of the usual expander label"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("expander-size",
P_("Expander Size"),
P_("Size of the expander arrow"),
0,
G_MAXINT,
DEFAULT_EXPANDER_SIZE,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("expander-spacing",
P_("Indicator Spacing"),
P_("Spacing around expander arrow"),
0,
G_MAXINT,
DEFAULT_EXPANDER_SPACING,
GTK_PARAM_READABLE));
widget_class->activate_signal =
g_signal_new (I_("activate"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkExpanderClass, activate),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
gtk_expander_init (GtkExpander *expander)
{
GtkExpanderPrivate *priv;
expander->priv = priv = GTK_EXPANDER_GET_PRIVATE (expander);
GTK_WIDGET_SET_FLAGS (expander, GTK_CAN_FOCUS);
GTK_WIDGET_SET_FLAGS (expander, GTK_NO_WINDOW);
priv->label_widget = NULL;
priv->event_window = NULL;
priv->spacing = 0;
priv->expander_style = GTK_EXPANDER_COLLAPSED;
priv->animation_timeout = 0;
priv->expanded = FALSE;
priv->use_underline = FALSE;
priv->use_markup = FALSE;
priv->button_down = FALSE;
priv->prelight = FALSE;
priv->expand_timer = 0;
gtk_drag_dest_set (GTK_WIDGET (expander), 0, NULL, 0, 0);
gtk_drag_dest_set_track_motion (GTK_WIDGET (expander), TRUE);
}
static void
gtk_expander_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (!type)
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
else if (strcmp (type, "label") == 0)
gtk_expander_set_label_widget (GTK_EXPANDER (buildable), GTK_WIDGET (child));
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (GTK_EXPANDER (buildable), type);
}
static void
gtk_expander_buildable_init (GtkBuildableIface *iface)
{
iface->add_child = gtk_expander_buildable_add_child;
}
static void
gtk_expander_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkExpander *expander = GTK_EXPANDER (object);
switch (prop_id)
{
case PROP_EXPANDED:
gtk_expander_set_expanded (expander, g_value_get_boolean (value));
break;
case PROP_LABEL:
gtk_expander_set_label (expander, g_value_get_string (value));
break;
case PROP_USE_UNDERLINE:
gtk_expander_set_use_underline (expander, g_value_get_boolean (value));
break;
case PROP_USE_MARKUP:
gtk_expander_set_use_markup (expander, g_value_get_boolean (value));
break;
case PROP_SPACING:
gtk_expander_set_spacing (expander, g_value_get_int (value));
break;
case PROP_LABEL_WIDGET:
gtk_expander_set_label_widget (expander, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_expander_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkExpander *expander = GTK_EXPANDER (object);
GtkExpanderPrivate *priv = expander->priv;
switch (prop_id)
{
case PROP_EXPANDED:
g_value_set_boolean (value, priv->expanded);
break;
case PROP_LABEL:
g_value_set_string (value, gtk_expander_get_label (expander));
break;
case PROP_USE_UNDERLINE:
g_value_set_boolean (value, priv->use_underline);
break;
case PROP_USE_MARKUP:
g_value_set_boolean (value, priv->use_markup);
break;
case PROP_SPACING:
g_value_set_int (value, priv->spacing);
break;
case PROP_LABEL_WIDGET:
g_value_set_object (value,
priv->label_widget ?
G_OBJECT (priv->label_widget) : NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_expander_destroy (GtkObject *object)
{
GtkExpanderPrivate *priv = GTK_EXPANDER (object)->priv;
if (priv->animation_timeout)
{
g_source_remove (priv->animation_timeout);
priv->animation_timeout = 0;
}
GTK_OBJECT_CLASS (gtk_expander_parent_class)->destroy (object);
}
static void
gtk_expander_realize (GtkWidget *widget)
{
GtkExpanderPrivate *priv;
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
GdkRectangle expander_rect;
gint label_height;
priv = GTK_EXPANDER (widget)->priv;
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
border_width = GTK_CONTAINER (widget)->border_width;
get_expander_bounds (GTK_EXPANDER (widget), &expander_rect);
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkRequisition label_requisition;
gtk_widget_get_child_requisition (priv->label_widget, &label_requisition);
label_height = label_requisition.height;
}
else
label_height = 0;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x + border_width;
attributes.y = widget->allocation.y + border_width;
attributes.width = MAX (widget->allocation.width - 2 * border_width, 1);
attributes.height = MAX (expander_rect.height, label_height - 2 * border_width);
attributes.wclass = GDK_INPUT_ONLY;
attributes.event_mask = gtk_widget_get_events (widget) |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
widget->window = gtk_widget_get_parent_window (widget);
g_object_ref (widget->window);
priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (priv->event_window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
}
static void
gtk_expander_unrealize (GtkWidget *widget)
{
GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv;
if (priv->event_window)
{
gdk_window_set_user_data (priv->event_window, NULL);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
}
GTK_WIDGET_CLASS (gtk_expander_parent_class)->unrealize (widget);
}
static void
gtk_expander_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkExpander *expander;
GtkBin *bin;
GtkExpanderPrivate *priv;
gint border_width;
gint expander_size;
gint expander_spacing;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
bin = GTK_BIN (widget);
expander = GTK_EXPANDER (widget);
priv = expander->priv;
border_width = GTK_CONTAINER (widget)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
requisition->width = expander_size + 2 * expander_spacing +
2 * focus_width + 2 * focus_pad;
requisition->height = interior_focus ? (2 * focus_width + 2 * focus_pad) : 0;
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkRequisition label_requisition;
gtk_widget_size_request (priv->label_widget, &label_requisition);
requisition->width += label_requisition.width;
requisition->height += label_requisition.height;
}
requisition->height = MAX (expander_size + 2 * expander_spacing, requisition->height);
if (!interior_focus)
requisition->height += 2 * focus_width + 2 * focus_pad;
if (bin->child && GTK_WIDGET_CHILD_VISIBLE (bin->child))
{
GtkRequisition child_requisition;
gtk_widget_size_request (bin->child, &child_requisition);
requisition->width = MAX (requisition->width, child_requisition.width);
requisition->height += child_requisition.height + priv->spacing;
}
requisition->width += 2 * border_width;
requisition->height += 2 * border_width;
}
static void
get_expander_bounds (GtkExpander *expander,
GdkRectangle *rect)
{
GtkWidget *widget;
GtkExpanderPrivate *priv;
gint border_width;
gint expander_size;
gint expander_spacing;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
gboolean ltr;
widget = GTK_WIDGET (expander);
priv = expander->priv;
border_width = GTK_CONTAINER (expander)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
rect->x = widget->allocation.x + border_width;
rect->y = widget->allocation.y + border_width;
if (ltr)
rect->x += expander_spacing;
else
rect->x += widget->allocation.width - 2 * border_width -
expander_spacing - expander_size;
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkAllocation label_allocation;
label_allocation = priv->label_widget->allocation;
if (expander_size < label_allocation.height)
rect->y += focus_width + focus_pad + (label_allocation.height - expander_size) / 2;
else
rect->y += expander_spacing;
}
else
{
rect->y += expander_spacing;
}
if (!interior_focus)
{
if (ltr)
rect->x += focus_width + focus_pad;
else
rect->x -= focus_width + focus_pad;
rect->y += focus_width + focus_pad;
}
rect->width = rect->height = expander_size;
}
static void
gtk_expander_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkExpander *expander;
GtkBin *bin;
GtkExpanderPrivate *priv;
GtkRequisition child_requisition;
gboolean child_visible = FALSE;
gint border_width;
gint expander_size;
gint expander_spacing;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
gint label_height;
expander = GTK_EXPANDER (widget);
bin = GTK_BIN (widget);
priv = expander->priv;
border_width = GTK_CONTAINER (widget)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
child_requisition.width = 0;
child_requisition.height = 0;
if (bin->child && GTK_WIDGET_CHILD_VISIBLE (bin->child))
{
child_visible = TRUE;
gtk_widget_get_child_requisition (bin->child, &child_requisition);
}
widget->allocation = *allocation;
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkAllocation label_allocation;
GtkRequisition label_requisition;
gboolean ltr;
gtk_widget_get_child_requisition (priv->label_widget, &label_requisition);
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
if (ltr)
label_allocation.x = (widget->allocation.x +
border_width + focus_width + focus_pad +
expander_size + 2 * expander_spacing);
else
label_allocation.x = (widget->allocation.x + widget->allocation.width -
(label_requisition.width +
border_width + focus_width + focus_pad +
expander_size + 2 * expander_spacing));
label_allocation.y = widget->allocation.y + border_width + focus_width + focus_pad;
label_allocation.width = MIN (label_requisition.width,
allocation->width - 2 * border_width -
expander_size - 2 * expander_spacing -
2 * focus_width - 2 * focus_pad);
label_allocation.width = MAX (label_allocation.width, 1);
label_allocation.height = MIN (label_requisition.height,
allocation->height - 2 * border_width -
2 * focus_width - 2 * focus_pad -
(child_visible ? priv->spacing : 0));
label_allocation.height = MAX (label_allocation.height, 1);
gtk_widget_size_allocate (priv->label_widget, &label_allocation);
label_height = label_allocation.height;
}
else
{
label_height = 0;
}
if (GTK_WIDGET_REALIZED (widget))
{
GdkRectangle rect;
get_expander_bounds (expander, &rect);
gdk_window_move_resize (priv->event_window,
allocation->x + border_width,
allocation->y + border_width,
MAX (allocation->width - 2 * border_width, 1),
MAX (rect.height, label_height - 2 * border_width));
}
if (child_visible)
{
GtkAllocation child_allocation;
gint top_height;
top_height = MAX (2 * expander_spacing + expander_size,
label_height +
(interior_focus ? 2 * focus_width + 2 * focus_pad : 0));
child_allocation.x = widget->allocation.x + border_width;
child_allocation.y = widget->allocation.y + border_width + top_height + priv->spacing;
if (!interior_focus)
child_allocation.y += 2 * focus_width + 2 * focus_pad;
child_allocation.width = MAX (allocation->width - 2 * border_width, 1);
child_allocation.height = allocation->height - top_height -
2 * border_width - priv->spacing -
(!interior_focus ? 2 * focus_width + 2 * focus_pad : 0);
child_allocation.height = MAX (child_allocation.height, 1);
gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
static void
gtk_expander_map (GtkWidget *widget)
{
GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv;
if (priv->label_widget)
gtk_widget_map (priv->label_widget);
GTK_WIDGET_CLASS (gtk_expander_parent_class)->map (widget);
if (priv->event_window)
gdk_window_show (priv->event_window);
}
static void
gtk_expander_unmap (GtkWidget *widget)
{
GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv;
if (priv->event_window)
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_expander_parent_class)->unmap (widget);
if (priv->label_widget)
gtk_widget_unmap (priv->label_widget);
}
static void
gtk_expander_paint_prelight (GtkExpander *expander)
{
GtkWidget *widget;
GtkContainer *container;
GtkExpanderPrivate *priv;
GdkRectangle area;
gboolean interior_focus;
int focus_width;
int focus_pad;
int expander_size;
int expander_spacing;
priv = expander->priv;
widget = GTK_WIDGET (expander);
container = GTK_CONTAINER (expander);
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
area.x = widget->allocation.x + container->border_width;
area.y = widget->allocation.y + container->border_width;
area.width = widget->allocation.width - (2 * container->border_width);
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
area.height = priv->label_widget->allocation.height;
else
area.height = 0;
area.height += interior_focus ? (focus_width + focus_pad) * 2 : 0;
area.height = MAX (area.height, expander_size + 2 * expander_spacing);
area.height += !interior_focus ? (focus_width + focus_pad) * 2 : 0;
gtk_paint_flat_box (widget->style, widget->window,
GTK_STATE_PRELIGHT,
GTK_SHADOW_ETCHED_OUT,
&area, widget, "expander",
area.x, area.y,
area.width, area.height);
}
static void
gtk_expander_paint (GtkExpander *expander)
{
GtkWidget *widget;
GdkRectangle clip;
GtkStateType state;
widget = GTK_WIDGET (expander);
get_expander_bounds (expander, &clip);
state = widget->state;
if (expander->priv->prelight)
{
state = GTK_STATE_PRELIGHT;
gtk_expander_paint_prelight (expander);
}
gtk_paint_expander (widget->style,
widget->window,
state,
&clip,
widget,
"expander",
clip.x + clip.width / 2,
clip.y + clip.height / 2,
expander->priv->expander_style);
}
static void
gtk_expander_paint_focus (GtkExpander *expander,
GdkRectangle *area)
{
GtkWidget *widget;
GtkExpanderPrivate *priv;
GdkRectangle rect;
gint x, y, width, height;
gboolean interior_focus;
gint border_width;
gint focus_width;
gint focus_pad;
gint expander_size;
gint expander_spacing;
gboolean ltr;
widget = GTK_WIDGET (expander);
priv = expander->priv;
border_width = GTK_CONTAINER (widget)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
width = height = 0;
if (priv->label_widget)
{
if (GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkAllocation label_allocation = priv->label_widget->allocation;
width = label_allocation.width;
height = label_allocation.height;
}
width += 2 * focus_pad + 2 * focus_width;
height += 2 * focus_pad + 2 * focus_width;
x = widget->allocation.x + border_width;
y = widget->allocation.y + border_width;
if (ltr)
{
if (interior_focus)
x += expander_spacing * 2 + expander_size;
}
else
{
x += widget->allocation.width - 2 * border_width
- expander_spacing * 2 - expander_size - width;
}
if (!interior_focus)
{
width += expander_size + 2 * expander_spacing;
height = MAX (height, expander_size + 2 * expander_spacing);
}
}
else
{
get_expander_bounds (expander, &rect);
x = rect.x - focus_pad;
y = rect.y - focus_pad;
width = rect.width + 2 * focus_pad;
height = rect.height + 2 * focus_pad;
}
gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
area, widget, "expander",
x, y, width, height);
}
static gboolean
gtk_expander_expose (GtkWidget *widget,
GdkEventExpose *event)
{
if (GTK_WIDGET_DRAWABLE (widget))
{
GtkExpander *expander = GTK_EXPANDER (widget);
gtk_expander_paint (expander);
if (GTK_WIDGET_HAS_FOCUS (expander))
gtk_expander_paint_focus (expander, &event->area);
GTK_WIDGET_CLASS (gtk_expander_parent_class)->expose_event (widget, event);
}
return FALSE;
}
static gboolean
gtk_expander_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkExpander *expander = GTK_EXPANDER (widget);
if (event->button == 1 && event->window == expander->priv->event_window)
{
expander->priv->button_down = TRUE;
return TRUE;
}
return FALSE;
}
static gboolean
gtk_expander_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkExpander *expander = GTK_EXPANDER (widget);
if (event->button == 1 && expander->priv->button_down)
{
gtk_widget_activate (widget);
expander->priv->button_down = FALSE;
return TRUE;
}
return FALSE;
}
static void
gtk_expander_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
if (!was_grabbed)
GTK_EXPANDER (widget)->priv->button_down = FALSE;
}
static void
gtk_expander_state_changed (GtkWidget *widget,
GtkStateType previous_state)
{
if (!GTK_WIDGET_IS_SENSITIVE (widget))
GTK_EXPANDER (widget)->priv->button_down = FALSE;
}
static void
gtk_expander_redraw_expander (GtkExpander *expander)
{
GtkWidget *widget;
widget = GTK_WIDGET (expander);
if (GTK_WIDGET_REALIZED (widget))
gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
}
static gboolean
gtk_expander_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkExpander *expander = GTK_EXPANDER (widget);
GtkWidget *event_widget;
event_widget = gtk_get_event_widget ((GdkEvent *) event);
if (event_widget == widget &&
event->detail != GDK_NOTIFY_INFERIOR)
{
expander->priv->prelight = TRUE;
if (expander->priv->label_widget)
gtk_widget_set_state (expander->priv->label_widget, GTK_STATE_PRELIGHT);
gtk_expander_redraw_expander (expander);
}
return FALSE;
}
static gboolean
gtk_expander_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkExpander *expander = GTK_EXPANDER (widget);
GtkWidget *event_widget;
event_widget = gtk_get_event_widget ((GdkEvent *) event);
if (event_widget == widget &&
event->detail != GDK_NOTIFY_INFERIOR)
{
expander->priv->prelight = FALSE;
if (expander->priv->label_widget)
gtk_widget_set_state (expander->priv->label_widget, GTK_STATE_NORMAL);
gtk_expander_redraw_expander (expander);
}
return FALSE;
}
static gboolean
expand_timeout (gpointer data)
{
GtkExpander *expander = GTK_EXPANDER (data);
GtkExpanderPrivate *priv = expander->priv;
priv->expand_timer = 0;
gtk_expander_set_expanded (expander, TRUE);
return FALSE;
}
static gboolean
gtk_expander_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkExpander *expander = GTK_EXPANDER (widget);
GtkExpanderPrivate *priv = expander->priv;
if (!priv->expanded && !priv->expand_timer)
{
GtkSettings *settings;
guint timeout;
settings = gtk_widget_get_settings (widget);
g_object_get (settings, "gtk-timeout-expand", &timeout, NULL);
priv->expand_timer = gdk_threads_add_timeout (timeout, (GSourceFunc) expand_timeout, expander);
}
return TRUE;
}
static void
gtk_expander_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GtkExpander *expander = GTK_EXPANDER (widget);
GtkExpanderPrivate *priv = expander->priv;
if (priv->expand_timer)
{
g_source_remove (priv->expand_timer);
priv->expand_timer = 0;
}
}
typedef enum
{
FOCUS_NONE,
FOCUS_WIDGET,
FOCUS_LABEL,
FOCUS_CHILD
} FocusSite;
static gboolean
focus_current_site (GtkExpander *expander,
GtkDirectionType direction)
{
GtkWidget *current_focus;
current_focus = GTK_CONTAINER (expander)->focus_child;
if (!current_focus)
return FALSE;
return gtk_widget_child_focus (current_focus, direction);
}
static gboolean
focus_in_site (GtkExpander *expander,
FocusSite site,
GtkDirectionType direction)
{
switch (site)
{
case FOCUS_WIDGET:
gtk_widget_grab_focus (GTK_WIDGET (expander));
return TRUE;
case FOCUS_LABEL:
if (expander->priv->label_widget)
return gtk_widget_child_focus (expander->priv->label_widget, direction);
else
return FALSE;
case FOCUS_CHILD:
{
GtkWidget *child = gtk_bin_get_child (GTK_BIN (expander));
if (child && GTK_WIDGET_CHILD_VISIBLE (child))
return gtk_widget_child_focus (child, direction);
else
return FALSE;
}
case FOCUS_NONE:
break;
}
g_assert_not_reached ();
return FALSE;
}
static FocusSite
get_next_site (GtkExpander *expander,
FocusSite site,
GtkDirectionType direction)
{
gboolean ltr;
ltr = gtk_widget_get_direction (GTK_WIDGET (expander)) != GTK_TEXT_DIR_RTL;
switch (site)
{
case FOCUS_NONE:
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_LEFT:
case GTK_DIR_UP:
return FOCUS_CHILD;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
case GTK_DIR_RIGHT:
return FOCUS_WIDGET;
}
case FOCUS_WIDGET:
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_UP:
return FOCUS_NONE;
case GTK_DIR_LEFT:
return ltr ? FOCUS_NONE : FOCUS_LABEL;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
return FOCUS_LABEL;
case GTK_DIR_RIGHT:
return ltr ? FOCUS_LABEL : FOCUS_NONE;
break;
}
case FOCUS_LABEL:
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_UP:
return FOCUS_WIDGET;
case GTK_DIR_LEFT:
return ltr ? FOCUS_WIDGET : FOCUS_CHILD;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
return FOCUS_CHILD;
case GTK_DIR_RIGHT:
return ltr ? FOCUS_CHILD : FOCUS_WIDGET;
break;
}
case FOCUS_CHILD:
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_LEFT:
case GTK_DIR_UP:
return FOCUS_LABEL;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
case GTK_DIR_RIGHT:
return FOCUS_NONE;
}
}
g_assert_not_reached ();
return FOCUS_NONE;
}
static gboolean
gtk_expander_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkExpander *expander = GTK_EXPANDER (widget);
if (!focus_current_site (expander, direction))
{
GtkWidget *old_focus_child;
gboolean widget_is_focus;
FocusSite site = FOCUS_NONE;
widget_is_focus = gtk_widget_is_focus (widget);
old_focus_child = GTK_CONTAINER (widget)->focus_child;
if (old_focus_child && old_focus_child == expander->priv->label_widget)
site = FOCUS_LABEL;
else if (old_focus_child)
site = FOCUS_CHILD;
else if (widget_is_focus)
site = FOCUS_WIDGET;
while ((site = get_next_site (expander, site, direction)) != FOCUS_NONE)
{
if (focus_in_site (expander, site, direction))
return TRUE;
}
return FALSE;
}
return TRUE;
}
static void
gtk_expander_add (GtkContainer *container,
GtkWidget *widget)
{
GTK_CONTAINER_CLASS (gtk_expander_parent_class)->add (container, widget);
gtk_widget_set_child_visible (widget, GTK_EXPANDER (container)->priv->expanded);
gtk_widget_queue_resize (GTK_WIDGET (container));
}
static void
gtk_expander_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkExpander *expander = GTK_EXPANDER (container);
if (GTK_EXPANDER (expander)->priv->label_widget == widget)
gtk_expander_set_label_widget (expander, NULL);
else
GTK_CONTAINER_CLASS (gtk_expander_parent_class)->remove (container, widget);
}
static void
gtk_expander_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkBin *bin = GTK_BIN (container);
GtkExpanderPrivate *priv = GTK_EXPANDER (container)->priv;
if (bin->child)
(* callback) (bin->child, callback_data);
if (priv->label_widget)
(* callback) (priv->label_widget, callback_data);
}
static void
gtk_expander_activate (GtkExpander *expander)
{
gtk_expander_set_expanded (expander, !expander->priv->expanded);
}
/**
* gtk_expander_new:
* @label: the text of the label
*
* Creates a new expander using @label as the text of the label.
*
* Return value: a new #GtkExpander widget.
*
* Since: 2.4
**/
GtkWidget *
gtk_expander_new (const gchar *label)
{
return g_object_new (GTK_TYPE_EXPANDER, "label", label, NULL);
}
/**
* gtk_expander_new_with_mnemonic:
* @label: the text of the label with an underscore in front of the
* mnemonic character
*
* Creates a new expander using @label as the text of the label.
* If characters in @label are preceded by an underscore, they are underlined.
* If you need a literal underscore character in a label, use '__' (two
* underscores). The first underlined character represents a keyboard
* accelerator called a mnemonic.
* Pressing Alt and that key activates the button.
*
* Return value: a new #GtkExpander widget.
*
* Since: 2.4
**/
GtkWidget *
gtk_expander_new_with_mnemonic (const gchar *label)
{
return g_object_new (GTK_TYPE_EXPANDER,
"label", label,
"use-underline", TRUE,
NULL);
}
static gboolean
gtk_expander_animation_timeout (GtkExpander *expander)
{
GtkExpanderPrivate *priv = expander->priv;
GdkRectangle area;
gboolean finish = FALSE;
if (GTK_WIDGET_REALIZED (expander))
{
get_expander_bounds (expander, &area);
gdk_window_invalidate_rect (GTK_WIDGET (expander)->window, &area, TRUE);
}
if (priv->expanded)
{
if (priv->expander_style == GTK_EXPANDER_COLLAPSED)
{
priv->expander_style = GTK_EXPANDER_SEMI_EXPANDED;
}
else
{
priv->expander_style = GTK_EXPANDER_EXPANDED;
finish = TRUE;
}
}
else
{
if (priv->expander_style == GTK_EXPANDER_EXPANDED)
{
priv->expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
}
else
{
priv->expander_style = GTK_EXPANDER_COLLAPSED;
finish = TRUE;
}
}
if (finish)
{
priv->animation_timeout = 0;
if (GTK_BIN (expander)->child)
gtk_widget_set_child_visible (GTK_BIN (expander)->child, priv->expanded);
gtk_widget_queue_resize (GTK_WIDGET (expander));
}
return !finish;
}
static void
gtk_expander_start_animation (GtkExpander *expander)
{
GtkExpanderPrivate *priv = expander->priv;
if (priv->animation_timeout)
g_source_remove (priv->animation_timeout);
priv->animation_timeout =
gdk_threads_add_timeout (50,
(GSourceFunc) gtk_expander_animation_timeout,
expander);
}
/**
* gtk_expander_set_expanded:
* @expander: a #GtkExpander
* @expanded: whether the child widget is revealed
*
* Sets the state of the expander. Set to %TRUE, if you want
* the child widget to be revealed, and %FALSE if you want the
* child widget to be hidden.
*
* Since: 2.4
**/
void
gtk_expander_set_expanded (GtkExpander *expander,
gboolean expanded)
{
GtkExpanderPrivate *priv;
g_return_if_fail (GTK_IS_EXPANDER (expander));
priv = expander->priv;
expanded = expanded != FALSE;
if (priv->expanded != expanded)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (expander));
gboolean enable_animations;
priv->expanded = expanded;
g_object_get (settings, "gtk-enable-animations", &enable_animations, NULL);
if (enable_animations && GTK_WIDGET_REALIZED (expander))
{
gtk_expander_start_animation (expander);
}
else
{
priv->expander_style = expanded ? GTK_EXPANDER_EXPANDED :
GTK_EXPANDER_COLLAPSED;
if (GTK_BIN (expander)->child)
{
gtk_widget_set_child_visible (GTK_BIN (expander)->child, priv->expanded);
gtk_widget_queue_resize (GTK_WIDGET (expander));
}
}
g_object_notify (G_OBJECT (expander), "expanded");
}
}
/**
* gtk_expander_get_expanded:
* @expander:a #GtkExpander
*
* Queries a #GtkExpander and returns its current state. Returns %TRUE
* if the child widget is revealed.
*
* See gtk_expander_set_expanded().
*
* Return value: the current state of the expander.
*
* Since: 2.4
**/
gboolean
gtk_expander_get_expanded (GtkExpander *expander)
{
g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE);
return expander->priv->expanded;
}
/**
* gtk_expander_set_spacing:
* @expander: a #GtkExpander
* @spacing: distance between the expander and child in pixels.
*
* Sets the spacing field of @expander, which is the number of pixels to
* place between expander and the child.
*
* Since: 2.4
**/
void
gtk_expander_set_spacing (GtkExpander *expander,
gint spacing)
{
g_return_if_fail (GTK_IS_EXPANDER (expander));
g_return_if_fail (spacing >= 0);
if (expander->priv->spacing != spacing)
{
expander->priv->spacing = spacing;
gtk_widget_queue_resize (GTK_WIDGET (expander));
g_object_notify (G_OBJECT (expander), "spacing");
}
}
/**
* gtk_expander_get_spacing:
* @expander: a #GtkExpander
*
* Gets the value set by gtk_expander_set_spacing().
*
* Return value: spacing between the expander and child.
*
* Since: 2.4
**/
gint
gtk_expander_get_spacing (GtkExpander *expander)
{
g_return_val_if_fail (GTK_IS_EXPANDER (expander), 0);
return expander->priv->spacing;
}
/**
* gtk_expander_set_label:
* @expander: a #GtkExpander
* @label: a string
*
* Sets the text of the label of the expander to @label.
*
* This will also clear any previously set labels.
*
* Since: 2.4
**/
void
gtk_expander_set_label (GtkExpander *expander,
const gchar *label)
{
g_return_if_fail (GTK_IS_EXPANDER (expander));
if (!label)
{
gtk_expander_set_label_widget (expander, NULL);
}
else
{
GtkWidget *child;
child = gtk_label_new (label);
gtk_label_set_use_underline (GTK_LABEL (child), expander->priv->use_underline);
gtk_label_set_use_markup (GTK_LABEL (child), expander->priv->use_markup);
gtk_widget_show (child);
gtk_expander_set_label_widget (expander, child);
}
g_object_notify (G_OBJECT (expander), "label");
}
/**
* gtk_expander_get_label:
* @expander: a #GtkExpander
*
* Fetches the text from a label widget including any embedded
* underlines indicating mnemonics and Pango markup, as set by
* gtk_expander_set_label(). If the label text has not been set the
* return value will be %NULL. This will be the case if you create an
* empty button with gtk_button_new() to use as a container.
*
* Note that this function behaved differently in versions prior to
* 2.14 and used to return the label text stripped of embedded
* underlines indicating mnemonics and Pango markup. This problem can
* be avoided by fetching the label text directly from the label
* widget.
*
* Return value: The text of the label widget. This string is owned
* by the widget and must not be modified or freed.
*
* Since: 2.4
**/
G_CONST_RETURN char *
gtk_expander_get_label (GtkExpander *expander)
{
GtkExpanderPrivate *priv;
g_return_val_if_fail (GTK_IS_EXPANDER (expander), NULL);
priv = expander->priv;
if (GTK_IS_LABEL (priv->label_widget))
return gtk_label_get_label (GTK_LABEL (priv->label_widget));
else
return NULL;
}
/**
* gtk_expander_set_use_underline:
* @expander: a #GtkExpander
* @use_underline: %TRUE if underlines in the text indicate mnemonics
*
* If true, an underline in the text of the expander label indicates
* the next character should be used for the mnemonic accelerator key.
*
* Since: 2.4
**/
void
gtk_expander_set_use_underline (GtkExpander *expander,
gboolean use_underline)
{
GtkExpanderPrivate *priv;
g_return_if_fail (GTK_IS_EXPANDER (expander));
priv = expander->priv;
use_underline = use_underline != FALSE;
if (priv->use_underline != use_underline)
{
priv->use_underline = use_underline;
if (GTK_IS_LABEL (priv->label_widget))
gtk_label_set_use_underline (GTK_LABEL (priv->label_widget), use_underline);
g_object_notify (G_OBJECT (expander), "use-underline");
}
}
/**
* gtk_expander_get_use_underline:
* @expander: a #GtkExpander
*
* Returns whether an embedded underline in the expander label indicates a
* mnemonic. See gtk_expander_set_use_underline().
*
* Return value: %TRUE if an embedded underline in the expander label
* indicates the mnemonic accelerator keys.
*
* Since: 2.4
**/
gboolean
gtk_expander_get_use_underline (GtkExpander *expander)
{
g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE);
return expander->priv->use_underline;
}
/**
* gtk_expander_set_use_markup:
* @expander: a #GtkExpander
* @use_markup: %TRUE if the label's text should be parsed for markup
*
* Sets whether the text of the label contains markup in <link
* linkend="PangoMarkupFormat">Pango's text markup
* language</link>. See gtk_label_set_markup().
*
* Since: 2.4
**/
void
gtk_expander_set_use_markup (GtkExpander *expander,
gboolean use_markup)
{
GtkExpanderPrivate *priv;
g_return_if_fail (GTK_IS_EXPANDER (expander));
priv = expander->priv;
use_markup = use_markup != FALSE;
if (priv->use_markup != use_markup)
{
priv->use_markup = use_markup;
if (GTK_IS_LABEL (priv->label_widget))
gtk_label_set_use_markup (GTK_LABEL (priv->label_widget), use_markup);
g_object_notify (G_OBJECT (expander), "use-markup");
}
}
/**
* gtk_expander_get_use_markup:
* @expander: a #GtkExpander
*
* Returns whether the label's text is interpreted as marked up with
* the <link linkend="PangoMarkupFormat">Pango text markup
* language</link>. See gtk_expander_set_use_markup ().
*
* Return value: %TRUE if the label's text will be parsed for markup
*
* Since: 2.4
**/
gboolean
gtk_expander_get_use_markup (GtkExpander *expander)
{
g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE);
return expander->priv->use_markup;
}
/**
* gtk_expander_set_label_widget:
* @expander: a #GtkExpander
* @label_widget: the new label widget
*
* Set the label widget for the expander. This is the widget
* that will appear embedded alongside the expander arrow.
*
* Since: 2.4
**/
void
gtk_expander_set_label_widget (GtkExpander *expander,
GtkWidget *label_widget)
{
GtkExpanderPrivate *priv;
g_return_if_fail (GTK_IS_EXPANDER (expander));
g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
g_return_if_fail (label_widget == NULL || label_widget->parent == NULL);
priv = expander->priv;
if (priv->label_widget == label_widget)
return;
if (priv->label_widget)
{
gtk_widget_set_state (priv->label_widget, GTK_STATE_NORMAL);
gtk_widget_unparent (priv->label_widget);
}
priv->label_widget = label_widget;
if (label_widget)
{
priv->label_widget = label_widget;
gtk_widget_set_parent (label_widget, GTK_WIDGET (expander));
if (priv->prelight)
gtk_widget_set_state (label_widget, GTK_STATE_PRELIGHT);
}
if (GTK_WIDGET_VISIBLE (expander))
gtk_widget_queue_resize (GTK_WIDGET (expander));
g_object_freeze_notify (G_OBJECT (expander));
g_object_notify (G_OBJECT (expander), "label-widget");
g_object_notify (G_OBJECT (expander), "label");
g_object_thaw_notify (G_OBJECT (expander));
}
/**
* gtk_expander_get_label_widget:
* @expander: a #GtkExpander
*
* Retrieves the label widget for the frame. See
* gtk_expander_set_label_widget().
*
* Return value: the label widget, or %NULL if there is none.
*
* Since: 2.4
**/
GtkWidget *
gtk_expander_get_label_widget (GtkExpander *expander)
{
g_return_val_if_fail (GTK_IS_EXPANDER (expander), NULL);
return expander->priv->label_widget;
}
#define __GTK_EXPANDER_C__
#include "gtkaliasdef.c"
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