2040 lines
62 KiB
C
2040 lines
62 KiB
C
/* GTK - The GIMP Toolkit
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*
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* Copyright (C) 2003 Sun Microsystems, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Mark McLoughlin <mark@skynet.ie>
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*/
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/**
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* SECTION:gtkexpander
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* @Short_description: A container which can hide its child
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* @Title: GtkExpander
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*
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* A #GtkExpander allows the user to hide or show its child by clicking
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* on an expander triangle similar to the triangles used in a #GtkTreeView.
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*
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* Normally you use an expander as you would use any other descendant
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* of #GtkBin; you create the child widget and use gtk_container_add()
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* to add it to the expander. When the expander is toggled, it will take
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* care of showing and hiding the child automatically.
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*
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* # Special Usage
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*
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* There are situations in which you may prefer to show and hide the
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* expanded widget yourself, such as when you want to actually create
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* the widget at expansion time. In this case, create a #GtkExpander
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* but do not add a child to it. The expander widget has an
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* #GtkExpander:expanded property which can be used to monitor
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* its expansion state. You should watch this property with a signal
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* connection as follows:
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*
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* |[<!-- language="C" -->
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* expander = gtk_expander_new_with_mnemonic ("_More Options");
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* g_signal_connect (expander, "notify::expanded",
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* G_CALLBACK (expander_callback), NULL);
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*
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* ...
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*
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* static void
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* expander_callback (GObject *object,
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* GParamSpec *param_spec,
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* gpointer user_data)
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* {
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* GtkExpander *expander;
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*
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* expander = GTK_EXPANDER (object);
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*
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* if (gtk_expander_get_expanded (expander))
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* {
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* // Show or create widgets
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* }
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* else
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* {
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* // Hide or destroy widgets
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* }
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* }
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* ]|
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*
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* # GtkExpander as GtkBuildable
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*
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* The GtkExpander implementation of the GtkBuildable interface supports
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* placing a child in the label position by specifying “label” as the
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* “type” attribute of a <child> element. A normal content child can be
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* specified without specifying a <child> type attribute.
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*
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* An example of a UI definition fragment with GtkExpander:
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* |[
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* <object class="GtkExpander">
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* <child type="label">
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* <object class="GtkLabel" id="expander-label"/>
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* </child>
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* <child>
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* <object class="GtkEntry" id="expander-content"/>
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* </child>
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* </object>
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* ]|
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*/
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#include "config.h"
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#include <string.h>
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#include "gtkexpander.h"
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#include "gtklabel.h"
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#include "gtkbuildable.h"
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#include "gtkcontainer.h"
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#include "gtkmarshalers.h"
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#include "gtkmain.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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#include "gtkdnd.h"
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#include "a11y/gtkexpanderaccessible.h"
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#define DEFAULT_EXPANDER_SIZE 10
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#define DEFAULT_EXPANDER_SPACING 2
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#define TIMEOUT_EXPAND 500
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enum
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{
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PROP_0,
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PROP_EXPANDED,
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PROP_LABEL,
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PROP_USE_UNDERLINE,
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PROP_USE_MARKUP,
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PROP_SPACING,
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PROP_LABEL_WIDGET,
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PROP_LABEL_FILL,
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PROP_RESIZE_TOPLEVEL
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};
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struct _GtkExpanderPrivate
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{
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GtkWidget *label_widget;
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GdkWindow *event_window;
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GtkGesture *multipress_gesture;
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gint spacing;
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guint expand_timer;
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guint expanded : 1;
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guint use_underline : 1;
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guint use_markup : 1;
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guint prelight : 1;
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guint label_fill : 1;
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guint resize_toplevel : 1;
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};
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static void gtk_expander_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_expander_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_expander_destroy (GtkWidget *widget);
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static void gtk_expander_realize (GtkWidget *widget);
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static void gtk_expander_unrealize (GtkWidget *widget);
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static void gtk_expander_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_expander_map (GtkWidget *widget);
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static void gtk_expander_unmap (GtkWidget *widget);
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static gboolean gtk_expander_draw (GtkWidget *widget,
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cairo_t *cr);
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static gboolean gtk_expander_enter_notify (GtkWidget *widget,
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GdkEventCrossing *event);
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static gboolean gtk_expander_leave_notify (GtkWidget *widget,
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GdkEventCrossing *event);
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static gboolean gtk_expander_focus (GtkWidget *widget,
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GtkDirectionType direction);
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static gboolean gtk_expander_drag_motion (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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guint time);
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static void gtk_expander_drag_leave (GtkWidget *widget,
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GdkDragContext *context,
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guint time);
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static void gtk_expander_add (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_expander_remove (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_expander_forall (GtkContainer *container,
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gboolean include_internals,
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GtkCallback callback,
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gpointer callback_data);
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static void gtk_expander_activate (GtkExpander *expander);
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static void get_expander_bounds (GtkExpander *expander,
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GdkRectangle *rect);
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/* GtkBuildable */
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static void gtk_expander_buildable_init (GtkBuildableIface *iface);
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static void gtk_expander_buildable_add_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *type);
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/* GtkWidget */
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static void gtk_expander_get_preferred_width (GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size);
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static void gtk_expander_get_preferred_height (GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size);
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static void gtk_expander_get_preferred_height_for_width (GtkWidget *layout,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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static void gtk_expander_get_preferred_width_for_height (GtkWidget *layout,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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/* Gestures */
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static void gesture_multipress_released_cb (GtkGestureMultiPress *gesture,
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gint n_press,
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gdouble x,
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gdouble y,
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GtkExpander *expander);
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G_DEFINE_TYPE_WITH_CODE (GtkExpander, gtk_expander, GTK_TYPE_BIN,
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G_ADD_PRIVATE (GtkExpander)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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gtk_expander_buildable_init))
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static void
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gtk_expander_class_init (GtkExpanderClass *klass)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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GtkContainerClass *container_class;
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gobject_class = (GObjectClass *) klass;
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widget_class = (GtkWidgetClass *) klass;
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container_class = (GtkContainerClass *) klass;
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gobject_class->set_property = gtk_expander_set_property;
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gobject_class->get_property = gtk_expander_get_property;
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widget_class->destroy = gtk_expander_destroy;
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widget_class->realize = gtk_expander_realize;
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widget_class->unrealize = gtk_expander_unrealize;
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widget_class->size_allocate = gtk_expander_size_allocate;
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widget_class->map = gtk_expander_map;
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widget_class->unmap = gtk_expander_unmap;
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widget_class->draw = gtk_expander_draw;
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widget_class->enter_notify_event = gtk_expander_enter_notify;
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widget_class->leave_notify_event = gtk_expander_leave_notify;
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widget_class->focus = gtk_expander_focus;
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widget_class->drag_motion = gtk_expander_drag_motion;
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widget_class->drag_leave = gtk_expander_drag_leave;
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widget_class->get_preferred_width = gtk_expander_get_preferred_width;
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widget_class->get_preferred_height = gtk_expander_get_preferred_height;
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widget_class->get_preferred_height_for_width = gtk_expander_get_preferred_height_for_width;
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widget_class->get_preferred_width_for_height = gtk_expander_get_preferred_width_for_height;
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container_class->add = gtk_expander_add;
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container_class->remove = gtk_expander_remove;
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container_class->forall = gtk_expander_forall;
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klass->activate = gtk_expander_activate;
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g_object_class_install_property (gobject_class,
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PROP_EXPANDED,
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g_param_spec_boolean ("expanded",
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P_("Expanded"),
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P_("Whether the expander has been opened to reveal the child widget"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (gobject_class,
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PROP_LABEL,
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g_param_spec_string ("label",
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P_("Label"),
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P_("Text of the expander's label"),
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NULL,
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GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class,
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PROP_USE_UNDERLINE,
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g_param_spec_boolean ("use-underline",
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P_("Use underline"),
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P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (gobject_class,
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PROP_USE_MARKUP,
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g_param_spec_boolean ("use-markup",
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P_("Use markup"),
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P_("The text of the label includes XML markup. See pango_parse_markup()"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (gobject_class,
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PROP_SPACING,
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g_param_spec_int ("spacing",
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P_("Spacing"),
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P_("Space to put between the label and the child"),
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0,
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G_MAXINT,
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0,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
|
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g_object_class_install_property (gobject_class,
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PROP_LABEL_WIDGET,
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g_param_spec_object ("label-widget",
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P_("Label widget"),
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P_("A widget to display in place of the usual expander label"),
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GTK_TYPE_WIDGET,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_LABEL_FILL,
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g_param_spec_boolean ("label-fill",
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P_("Label fill"),
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P_("Whether the label widget should fill all available horizontal space"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY));
|
||
|
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/**
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* GtkExpander:resize-toplevel:
|
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*
|
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* When this property is %TRUE, the expander will resize the toplevel
|
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* widget containing the expander upon expanding and collapsing.
|
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*
|
||
* Since: 3.2
|
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*/
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g_object_class_install_property (gobject_class,
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PROP_RESIZE_TOPLEVEL,
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g_param_spec_boolean ("resize-toplevel",
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P_("Resize toplevel"),
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P_("Whether the expander will resize the toplevel window upon expanding and collapsing"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("expander-size",
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P_("Expander Size"),
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P_("Size of the expander arrow"),
|
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0,
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G_MAXINT,
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DEFAULT_EXPANDER_SIZE,
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GTK_PARAM_READABLE));
|
||
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("expander-spacing",
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P_("Indicator Spacing"),
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P_("Spacing around expander arrow"),
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0,
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G_MAXINT,
|
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DEFAULT_EXPANDER_SPACING,
|
||
GTK_PARAM_READABLE));
|
||
|
||
widget_class->activate_signal =
|
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g_signal_new (I_("activate"),
|
||
G_TYPE_FROM_CLASS (gobject_class),
|
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GtkExpanderClass, activate),
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NULL, NULL,
|
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_gtk_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
|
||
|
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_EXPANDER_ACCESSIBLE);
|
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}
|
||
|
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static void
|
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gtk_expander_init (GtkExpander *expander)
|
||
{
|
||
GtkExpanderPrivate *priv;
|
||
|
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expander->priv = priv = gtk_expander_get_instance_private (expander);
|
||
|
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gtk_widget_set_can_focus (GTK_WIDGET (expander), TRUE);
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gtk_widget_set_has_window (GTK_WIDGET (expander), FALSE);
|
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|
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priv->label_widget = NULL;
|
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priv->event_window = NULL;
|
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priv->spacing = 0;
|
||
|
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priv->expanded = FALSE;
|
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priv->use_underline = FALSE;
|
||
priv->use_markup = FALSE;
|
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priv->prelight = FALSE;
|
||
priv->label_fill = FALSE;
|
||
priv->expand_timer = 0;
|
||
priv->resize_toplevel = 0;
|
||
|
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gtk_drag_dest_set (GTK_WIDGET (expander), 0, NULL, 0, 0);
|
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gtk_drag_dest_set_track_motion (GTK_WIDGET (expander), TRUE);
|
||
|
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priv->multipress_gesture = gtk_gesture_multi_press_new (GTK_WIDGET (expander));
|
||
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (priv->multipress_gesture),
|
||
GDK_BUTTON_PRIMARY);
|
||
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (priv->multipress_gesture),
|
||
FALSE);
|
||
g_signal_connect (priv->multipress_gesture, "released",
|
||
G_CALLBACK (gesture_multipress_released_cb), expander);
|
||
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->multipress_gesture),
|
||
GTK_PHASE_BUBBLE);
|
||
}
|
||
|
||
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;
|
||
case PROP_LABEL_FILL:
|
||
gtk_expander_set_label_fill (expander, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_RESIZE_TOPLEVEL:
|
||
gtk_expander_set_resize_toplevel (expander, g_value_get_boolean (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;
|
||
case PROP_LABEL_FILL:
|
||
g_value_set_boolean (value, priv->label_fill);
|
||
break;
|
||
case PROP_RESIZE_TOPLEVEL:
|
||
g_value_set_boolean (value, gtk_expander_get_resize_toplevel (expander));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_expander_destroy (GtkWidget *widget)
|
||
{
|
||
GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv;
|
||
|
||
if (priv->expand_timer)
|
||
{
|
||
g_source_remove (priv->expand_timer);
|
||
priv->expand_timer = 0;
|
||
}
|
||
|
||
g_clear_object (&priv->multipress_gesture);
|
||
|
||
GTK_WIDGET_CLASS (gtk_expander_parent_class)->destroy (widget);
|
||
}
|
||
|
||
static void
|
||
get_padding_and_border (GtkWidget *widget,
|
||
GtkBorder *border)
|
||
{
|
||
GtkStyleContext *context;
|
||
GtkStateFlags state;
|
||
GtkBorder tmp;
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
state = gtk_widget_get_state_flags (widget);
|
||
|
||
gtk_style_context_get_padding (context, state, border);
|
||
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
|
||
get_prelight_area_bounds (GtkExpander *expander,
|
||
GdkRectangle *area)
|
||
{
|
||
GtkWidget *widget;
|
||
GtkExpanderPrivate *priv;
|
||
GtkAllocation allocation;
|
||
GtkContainer *container;
|
||
int expander_size;
|
||
int expander_spacing;
|
||
guint border_width;
|
||
GtkBorder border;
|
||
|
||
priv = expander->priv;
|
||
widget = GTK_WIDGET (expander);
|
||
container = GTK_CONTAINER (expander);
|
||
|
||
gtk_widget_style_get (widget,
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
|
||
gtk_widget_get_allocation (widget, &allocation);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
border_width = gtk_container_get_border_width (container);
|
||
area->x = border_width;
|
||
area->y = border_width;
|
||
area->width = allocation.width - (2 * border_width);
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
GtkAllocation label_widget_allocation;
|
||
|
||
gtk_widget_get_allocation (priv->label_widget, &label_widget_allocation);
|
||
area->height = label_widget_allocation.height;
|
||
}
|
||
else
|
||
area->height = 0;
|
||
|
||
area->height = MAX (area->height, expander_size + 2 * expander_spacing);
|
||
area->height += border.top + border.bottom;
|
||
}
|
||
|
||
static void
|
||
gtk_expander_realize (GtkWidget *widget)
|
||
{
|
||
GtkAllocation allocation;
|
||
GtkExpanderPrivate *priv;
|
||
GdkWindow *window;
|
||
GdkWindowAttr attributes;
|
||
gint attributes_mask;
|
||
GdkRectangle area;
|
||
|
||
priv = GTK_EXPANDER (widget)->priv;
|
||
|
||
gtk_widget_get_allocation (widget, &allocation);
|
||
get_prelight_area_bounds (GTK_EXPANDER (widget), &area);
|
||
|
||
attributes.window_type = GDK_WINDOW_CHILD;
|
||
attributes.x = allocation.x + area.x;
|
||
attributes.y = allocation.y + area.y;
|
||
attributes.width = area.width;
|
||
attributes.height = area.height;
|
||
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;
|
||
|
||
window = gtk_widget_get_parent_window (widget);
|
||
gtk_widget_set_window (widget, window);
|
||
g_object_ref (window);
|
||
|
||
priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
|
||
&attributes, attributes_mask);
|
||
gtk_widget_register_window (widget, priv->event_window);
|
||
|
||
gtk_gesture_set_window (priv->multipress_gesture, priv->event_window);
|
||
gtk_widget_set_realized (widget, TRUE);
|
||
}
|
||
|
||
static void
|
||
gtk_expander_unrealize (GtkWidget *widget)
|
||
{
|
||
GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv;
|
||
|
||
if (priv->event_window)
|
||
{
|
||
gtk_gesture_set_window (priv->multipress_gesture, NULL);
|
||
gtk_widget_unregister_window (widget, priv->event_window);
|
||
gdk_window_destroy (priv->event_window);
|
||
priv->event_window = NULL;
|
||
}
|
||
|
||
GTK_WIDGET_CLASS (gtk_expander_parent_class)->unrealize (widget);
|
||
}
|
||
|
||
static void
|
||
get_expander_bounds (GtkExpander *expander,
|
||
GdkRectangle *rect)
|
||
{
|
||
GtkAllocation allocation;
|
||
GtkWidget *widget;
|
||
GtkExpanderPrivate *priv;
|
||
gint border_width;
|
||
gint expander_size;
|
||
gint expander_spacing;
|
||
gboolean ltr;
|
||
GtkBorder border;
|
||
|
||
widget = GTK_WIDGET (expander);
|
||
priv = expander->priv;
|
||
|
||
gtk_widget_get_allocation (widget, &allocation);
|
||
|
||
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
||
|
||
gtk_widget_style_get (widget,
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
|
||
|
||
rect->x = allocation.x + border_width + border.left;
|
||
rect->y = allocation.y + border_width + border.top;
|
||
|
||
if (ltr)
|
||
rect->x += expander_spacing;
|
||
else
|
||
rect->x += allocation.width - 2 * border_width -
|
||
expander_spacing - expander_size - border.right;
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
GtkAllocation label_allocation;
|
||
|
||
gtk_widget_get_allocation (priv->label_widget, &label_allocation);
|
||
|
||
if (expander_size < label_allocation.height)
|
||
rect->y += (label_allocation.height - expander_size) / 2;
|
||
else
|
||
rect->y += expander_spacing;
|
||
}
|
||
else
|
||
{
|
||
rect->y += expander_spacing;
|
||
}
|
||
|
||
rect->width = rect->height = expander_size;
|
||
}
|
||
|
||
static void
|
||
gtk_expander_size_allocate (GtkWidget *widget,
|
||
GtkAllocation *allocation)
|
||
{
|
||
GtkExpander *expander;
|
||
GtkWidget *child;
|
||
GtkExpanderPrivate *priv;
|
||
gboolean child_visible = FALSE;
|
||
guint border_width;
|
||
gint expander_size;
|
||
gint expander_spacing;
|
||
gint label_height;
|
||
gint label_xpad, label_xoffset;
|
||
gint child_ypad, child_yoffset;
|
||
GtkBorder border;
|
||
|
||
expander = GTK_EXPANDER (widget);
|
||
child = gtk_bin_get_child (GTK_BIN (widget));
|
||
priv = expander->priv;
|
||
|
||
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
||
|
||
gtk_widget_set_allocation (widget, allocation);
|
||
|
||
gtk_widget_style_get (widget,
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
/* Calculate some offsets/padding first */
|
||
label_xoffset = border_width + expander_size + 2 * expander_spacing + border.left;
|
||
label_xpad = 2 * border_width + expander_size + 2 * expander_spacing + border.left + border.right;
|
||
|
||
child_yoffset = border_width + priv->spacing + border.top + border.bottom;
|
||
child_ypad = 2 * border_width + priv->spacing + border.top + border.bottom;
|
||
|
||
child_visible = (child && gtk_widget_get_child_visible (child));
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
GtkAllocation label_allocation;
|
||
gint natural_label_width;
|
||
gboolean ltr;
|
||
|
||
gtk_widget_get_preferred_width (priv->label_widget, NULL, &natural_label_width);
|
||
|
||
if (priv->label_fill)
|
||
label_allocation.width = allocation->width - label_xpad;
|
||
else
|
||
label_allocation.width = MIN (natural_label_width, allocation->width - label_xpad);
|
||
label_allocation.width = MAX (label_allocation.width, 1);
|
||
|
||
/* We distribute the minimum height to the label widget and prioritize
|
||
* the child widget giving it the remaining height
|
||
*/
|
||
gtk_widget_get_preferred_height_for_width (priv->label_widget,
|
||
label_allocation.width, &label_height, NULL);
|
||
|
||
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
|
||
|
||
if (priv->label_fill)
|
||
label_allocation.x = allocation->x + label_xoffset;
|
||
else if (ltr)
|
||
label_allocation.x = allocation->x + label_xoffset;
|
||
else
|
||
label_allocation.x = allocation->x + allocation->width -
|
||
(label_allocation.width + label_xoffset);
|
||
|
||
label_allocation.y = allocation->y + border_width + border.top;
|
||
label_allocation.height = MIN (label_height,
|
||
allocation->height - 2 * border_width -
|
||
border.top - border.bottom -
|
||
(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_get_realized (widget))
|
||
{
|
||
GdkRectangle rect;
|
||
|
||
get_prelight_area_bounds (expander, &rect);
|
||
gdk_window_move_resize (priv->event_window,
|
||
allocation->x + rect.x,
|
||
allocation->y + rect.y,
|
||
rect.width, rect.height);
|
||
}
|
||
|
||
if (child_visible)
|
||
{
|
||
GtkAllocation child_allocation;
|
||
gint top_height;
|
||
|
||
top_height = MAX (2 * expander_spacing + expander_size, label_height);
|
||
|
||
child_allocation.x = allocation->x + border_width;
|
||
child_allocation.y = allocation->y + top_height + child_yoffset;
|
||
|
||
child_allocation.width = MAX (allocation->width - 2 * border_width, 1);
|
||
child_allocation.height = allocation->height - top_height - child_ypad;
|
||
child_allocation.height = MAX (child_allocation.height, 1);
|
||
|
||
gtk_widget_size_allocate (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,
|
||
cairo_t *cr)
|
||
{
|
||
GtkWidget *widget;
|
||
GdkRectangle area;
|
||
GtkStyleContext *context;
|
||
|
||
widget = GTK_WIDGET (expander);
|
||
get_prelight_area_bounds (expander, &area);
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
gtk_render_background (context, cr,
|
||
area.x, area.y,
|
||
area.width, area.height);
|
||
}
|
||
|
||
static void
|
||
gtk_expander_paint (GtkExpander *expander,
|
||
cairo_t *cr)
|
||
{
|
||
GtkExpanderPrivate *priv = expander->priv;
|
||
GtkWidget *widget;
|
||
GdkRectangle clip;
|
||
GtkAllocation allocation;
|
||
GtkStyleContext *context;
|
||
GtkStateFlags state = 0;
|
||
gint size;
|
||
|
||
widget = GTK_WIDGET (expander);
|
||
context = gtk_widget_get_style_context (widget);
|
||
state = gtk_widget_get_state_flags (widget);
|
||
|
||
get_expander_bounds (expander, &clip);
|
||
gtk_widget_get_allocation (widget, &allocation);
|
||
|
||
gtk_style_context_save (context);
|
||
|
||
state &= ~(GTK_STATE_FLAG_PRELIGHT);
|
||
if (expander->priv->prelight)
|
||
{
|
||
state |= GTK_STATE_FLAG_PRELIGHT;
|
||
gtk_style_context_set_state (context, state);
|
||
gtk_expander_paint_prelight (expander, cr);
|
||
}
|
||
|
||
gtk_widget_style_get (widget, "expander-size", &size, NULL);
|
||
|
||
/* Set active flag as per the expanded state */
|
||
if (priv->expanded)
|
||
state |= GTK_STATE_FLAG_ACTIVE;
|
||
else
|
||
state &= ~(GTK_STATE_FLAG_ACTIVE);
|
||
|
||
gtk_style_context_set_state (context, state);
|
||
gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
|
||
|
||
gtk_render_expander (context, cr,
|
||
clip.x - allocation.x,
|
||
clip.y - allocation.y,
|
||
size, size);
|
||
|
||
gtk_style_context_restore (context);
|
||
}
|
||
|
||
static void
|
||
gtk_expander_paint_focus (GtkExpander *expander,
|
||
cairo_t *cr)
|
||
{
|
||
GtkWidget *widget;
|
||
GtkExpanderPrivate *priv;
|
||
GdkRectangle rect;
|
||
GtkStyleContext *context;
|
||
gint x, y, width, height;
|
||
gint border_width;
|
||
gint expander_size;
|
||
gint expander_spacing;
|
||
gboolean ltr;
|
||
GtkAllocation allocation;
|
||
GtkBorder border;
|
||
|
||
widget = GTK_WIDGET (expander);
|
||
priv = expander->priv;
|
||
|
||
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
||
gtk_widget_get_allocation (widget, &allocation);
|
||
|
||
gtk_widget_style_get (widget,
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
|
||
|
||
width = height = 0;
|
||
|
||
if (priv->label_widget)
|
||
{
|
||
if (gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
GtkAllocation label_allocation;
|
||
|
||
gtk_widget_get_allocation (priv->label_widget, &label_allocation);
|
||
width = label_allocation.width;
|
||
height = label_allocation.height;
|
||
}
|
||
|
||
x = border_width + border.left;
|
||
y = border_width + border.top;
|
||
|
||
if (ltr)
|
||
{
|
||
x += expander_spacing * 2 + expander_size;
|
||
}
|
||
else
|
||
{
|
||
x += allocation.width - 2 * border_width
|
||
- expander_spacing * 2 - expander_size - width;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
get_expander_bounds (expander, &rect);
|
||
|
||
x = rect.x - allocation.x;
|
||
y = rect.y - allocation.y;
|
||
width = rect.width;
|
||
height = rect.height;
|
||
}
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
gtk_render_focus (context, cr,
|
||
x, y, width, height);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_expander_draw (GtkWidget *widget,
|
||
cairo_t *cr)
|
||
{
|
||
GtkExpander *expander = GTK_EXPANDER (widget);
|
||
|
||
gtk_expander_paint (expander, cr);
|
||
|
||
if (gtk_widget_has_visible_focus (widget))
|
||
gtk_expander_paint_focus (expander, cr);
|
||
|
||
GTK_WIDGET_CLASS (gtk_expander_parent_class)->draw (widget, cr);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gesture_multipress_released_cb (GtkGestureMultiPress *gesture,
|
||
gint n_press,
|
||
gdouble x,
|
||
gdouble y,
|
||
GtkExpander *expander)
|
||
{
|
||
if (expander->priv->prelight)
|
||
gtk_widget_activate (GTK_WIDGET (expander));
|
||
}
|
||
|
||
static void
|
||
gtk_expander_redraw_expander (GtkExpander *expander)
|
||
{
|
||
GtkAllocation allocation;
|
||
GtkWidget *widget = GTK_WIDGET (expander);
|
||
|
||
if (gtk_widget_get_realized (widget))
|
||
{
|
||
gtk_widget_get_allocation (widget, &allocation);
|
||
gdk_window_invalidate_rect (gtk_widget_get_window (widget), &allocation, FALSE);
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gtk_expander_enter_notify (GtkWidget *widget,
|
||
GdkEventCrossing *event)
|
||
{
|
||
GtkExpander *expander = GTK_EXPANDER (widget);
|
||
|
||
if (event->window == expander->priv->event_window &&
|
||
event->detail != GDK_NOTIFY_INFERIOR)
|
||
{
|
||
expander->priv->prelight = TRUE;
|
||
|
||
if (expander->priv->label_widget)
|
||
gtk_widget_set_state_flags (expander->priv->label_widget,
|
||
GTK_STATE_FLAG_PRELIGHT,
|
||
FALSE);
|
||
|
||
gtk_expander_redraw_expander (expander);
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_expander_leave_notify (GtkWidget *widget,
|
||
GdkEventCrossing *event)
|
||
{
|
||
GtkExpander *expander = GTK_EXPANDER (widget);
|
||
|
||
if (event->window == expander->priv->event_window &&
|
||
event->detail != GDK_NOTIFY_INFERIOR)
|
||
{
|
||
expander->priv->prelight = FALSE;
|
||
|
||
if (expander->priv->label_widget)
|
||
gtk_widget_unset_state_flags (expander->priv->label_widget,
|
||
GTK_STATE_FLAG_PRELIGHT);
|
||
|
||
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)
|
||
{
|
||
priv->expand_timer = gdk_threads_add_timeout (TIMEOUT_EXPAND, (GSourceFunc) expand_timeout, expander);
|
||
g_source_set_name_by_id (priv->expand_timer, "[gtk+] expand_timeout");
|
||
}
|
||
|
||
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_get_focus_child (GTK_CONTAINER (expander));
|
||
|
||
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_get_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;
|
||
}
|
||
break;
|
||
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;
|
||
}
|
||
break;
|
||
}
|
||
|
||
g_assert_not_reached ();
|
||
return FOCUS_NONE;
|
||
}
|
||
|
||
static void
|
||
gtk_expander_resize_toplevel (GtkExpander *expander)
|
||
{
|
||
GtkExpanderPrivate *priv = expander->priv;
|
||
GtkWidget *child = gtk_bin_get_child (GTK_BIN (expander));
|
||
|
||
if (child && priv->resize_toplevel &&
|
||
gtk_widget_get_realized (GTK_WIDGET (expander)))
|
||
{
|
||
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (expander));
|
||
|
||
if (toplevel && gtk_widget_get_realized (toplevel))
|
||
{
|
||
GtkAllocation toplevel_allocation;
|
||
|
||
gtk_widget_get_allocation (toplevel, &toplevel_allocation);
|
||
|
||
if (priv->expanded)
|
||
{
|
||
GtkRequisition child_requisition;
|
||
|
||
gtk_widget_get_preferred_size (child, &child_requisition, NULL);
|
||
|
||
toplevel_allocation.height += child_requisition.height;
|
||
}
|
||
else
|
||
{
|
||
GtkAllocation child_allocation;
|
||
|
||
gtk_widget_get_allocation (child, &child_allocation);
|
||
|
||
toplevel_allocation.height -= child_allocation.height;
|
||
}
|
||
|
||
gtk_window_resize (GTK_WINDOW (toplevel),
|
||
toplevel_allocation.width,
|
||
toplevel_allocation.height);
|
||
}
|
||
}
|
||
}
|
||
|
||
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_get_focus_child (GTK_CONTAINER (widget));
|
||
|
||
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;
|
||
GtkWidget *child;
|
||
|
||
child = gtk_bin_get_child (bin);
|
||
if (child)
|
||
(* callback) (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);
|
||
}
|
||
|
||
|
||
static void
|
||
gtk_expander_get_preferred_width (GtkWidget *widget,
|
||
gint *minimum_size,
|
||
gint *natural_size)
|
||
{
|
||
GtkExpander *expander;
|
||
GtkWidget *child;
|
||
GtkExpanderPrivate *priv;
|
||
gint border_width;
|
||
gint expander_size;
|
||
gint expander_spacing;
|
||
GtkBorder border;
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (widget));
|
||
expander = GTK_EXPANDER (widget);
|
||
priv = expander->priv;
|
||
|
||
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
||
|
||
gtk_widget_style_get (GTK_WIDGET (widget),
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
*minimum_size = *natural_size =
|
||
expander_size + 2 * expander_spacing;
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
gint label_min, label_nat;
|
||
|
||
gtk_widget_get_preferred_width (priv->label_widget,
|
||
&label_min, &label_nat);
|
||
|
||
*minimum_size += label_min;
|
||
*natural_size += label_nat;
|
||
}
|
||
|
||
if (child && gtk_widget_get_child_visible (child))
|
||
{
|
||
gint child_min, child_nat;
|
||
|
||
gtk_widget_get_preferred_width (child,
|
||
&child_min, &child_nat);
|
||
|
||
*minimum_size = MAX (*minimum_size, child_min);
|
||
*natural_size = MAX (*natural_size, child_nat);
|
||
|
||
}
|
||
|
||
*minimum_size += 2 * border_width + border.left + border.right;
|
||
*natural_size += 2 * border_width + border.left + border.right;
|
||
}
|
||
|
||
static void
|
||
gtk_expander_get_preferred_height (GtkWidget *widget,
|
||
gint *minimum_size,
|
||
gint *natural_size)
|
||
{
|
||
GtkExpander *expander;
|
||
GtkWidget *child;
|
||
GtkExpanderPrivate *priv;
|
||
gint border_width;
|
||
gint expander_size;
|
||
gint expander_spacing;
|
||
GtkBorder border;
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (widget));
|
||
expander = GTK_EXPANDER (widget);
|
||
priv = expander->priv;
|
||
|
||
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
||
|
||
gtk_widget_style_get (GTK_WIDGET (widget),
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
*minimum_size = *natural_size = 0;
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
gint label_min, label_nat;
|
||
|
||
gtk_widget_get_preferred_height (priv->label_widget,
|
||
&label_min, &label_nat);
|
||
|
||
*minimum_size += label_min;
|
||
*natural_size += label_nat;
|
||
}
|
||
|
||
*minimum_size = MAX (*minimum_size, expander_size + 2 * expander_spacing);
|
||
*natural_size = MAX (*natural_size, *minimum_size);
|
||
|
||
if (child && gtk_widget_get_child_visible (child))
|
||
{
|
||
gint child_min, child_nat;
|
||
|
||
gtk_widget_get_preferred_height (child,
|
||
&child_min, &child_nat);
|
||
|
||
*minimum_size += child_min + priv->spacing;
|
||
*natural_size += child_nat + priv->spacing;
|
||
|
||
}
|
||
|
||
*minimum_size += 2 * border_width + border.top + border.bottom;
|
||
*natural_size += 2 * border_width + border.top + border.bottom;
|
||
}
|
||
|
||
static void
|
||
gtk_expander_get_preferred_height_for_width (GtkWidget *widget,
|
||
gint width,
|
||
gint *minimum_height,
|
||
gint *natural_height)
|
||
{
|
||
GtkExpander *expander;
|
||
GtkWidget *child;
|
||
GtkExpanderPrivate *priv;
|
||
gint border_width;
|
||
gint expander_size;
|
||
gint expander_spacing;
|
||
gint label_xpad;
|
||
GtkBorder border;
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (widget));
|
||
expander = GTK_EXPANDER (widget);
|
||
priv = expander->priv;
|
||
|
||
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
||
|
||
gtk_widget_style_get (GTK_WIDGET (widget),
|
||
"expander-size", &expander_size,
|
||
"expander-spacing", &expander_spacing,
|
||
NULL);
|
||
get_padding_and_border (widget, &border);
|
||
|
||
label_xpad = 2 * border_width + expander_size + 2 * expander_spacing;
|
||
|
||
*minimum_height = *natural_height = 0;
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
gint label_min, label_nat;
|
||
|
||
gtk_widget_get_preferred_height_for_width (priv->label_widget,
|
||
MAX (width - label_xpad, 1),
|
||
&label_min, &label_nat);
|
||
|
||
*minimum_height += label_min;
|
||
*natural_height += label_nat;
|
||
}
|
||
|
||
*minimum_height = MAX (*minimum_height, expander_size + 2 * expander_spacing);
|
||
*natural_height = MAX (*natural_height, *minimum_height);
|
||
|
||
if (child && gtk_widget_get_child_visible (child))
|
||
{
|
||
gint child_min, child_nat;
|
||
|
||
gtk_widget_get_preferred_height_for_width (child,
|
||
MAX (width - 2 * border_width, 1),
|
||
&child_min, &child_nat);
|
||
|
||
*minimum_height += child_min + priv->spacing;
|
||
*natural_height += child_nat + priv->spacing;
|
||
}
|
||
|
||
*minimum_height += 2 * border_width + border.top + border.bottom;
|
||
*natural_height += 2 * border_width + border.top + border.bottom;
|
||
}
|
||
|
||
static void
|
||
gtk_expander_get_preferred_width_for_height (GtkWidget *widget,
|
||
gint height,
|
||
gint *minimum_width,
|
||
gint *natural_width)
|
||
{
|
||
GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
|
||
}
|
||
|
||
|
||
|
||
/**
|
||
* gtk_expander_new:
|
||
* @label: the text of the label
|
||
*
|
||
* Creates a new expander using @label as the text of the label.
|
||
*
|
||
* Returns: 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: (allow-none): 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.
|
||
*
|
||
* Returns: 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);
|
||
}
|
||
|
||
/**
|
||
* 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;
|
||
GtkWidget *child;
|
||
|
||
g_return_if_fail (GTK_IS_EXPANDER (expander));
|
||
|
||
priv = expander->priv;
|
||
|
||
expanded = expanded != FALSE;
|
||
|
||
if (priv->expanded != expanded)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (expander);
|
||
|
||
priv->expanded = expanded;
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (expander));
|
||
|
||
if (child)
|
||
{
|
||
gtk_widget_set_child_visible (child, priv->expanded);
|
||
gtk_widget_queue_resize (widget);
|
||
gtk_expander_resize_toplevel (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().
|
||
*
|
||
* Returns: 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().
|
||
*
|
||
* Returns: 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: (allow-none): 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.
|
||
*
|
||
* Returns: The text of the label widget. This string is owned
|
||
* by the widget and must not be modified or freed.
|
||
*
|
||
* Since: 2.4
|
||
*/
|
||
const 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().
|
||
*
|
||
* Returns: %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
|
||
* [Pango’s text markup language][PangoMarkupFormat].
|
||
* 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 [Pango text markup language][PangoMarkupFormat].
|
||
* See gtk_expander_set_use_markup().
|
||
*
|
||
* Returns: %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: (allow-none): 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;
|
||
GtkWidget *widget;
|
||
|
||
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 || gtk_widget_get_parent (label_widget) == NULL);
|
||
|
||
priv = expander->priv;
|
||
|
||
if (priv->label_widget == label_widget)
|
||
return;
|
||
|
||
if (priv->label_widget)
|
||
{
|
||
gtk_widget_set_state_flags (priv->label_widget, 0, TRUE);
|
||
gtk_widget_unparent (priv->label_widget);
|
||
}
|
||
|
||
priv->label_widget = label_widget;
|
||
widget = GTK_WIDGET (expander);
|
||
|
||
if (label_widget)
|
||
{
|
||
priv->label_widget = label_widget;
|
||
|
||
gtk_widget_set_parent (label_widget, widget);
|
||
|
||
if (priv->prelight)
|
||
gtk_widget_set_state_flags (label_widget,
|
||
GTK_STATE_FLAG_PRELIGHT,
|
||
FALSE);
|
||
}
|
||
|
||
if (gtk_widget_get_visible (widget))
|
||
gtk_widget_queue_resize (widget);
|
||
|
||
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().
|
||
*
|
||
* Returns: (transfer none): 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;
|
||
}
|
||
|
||
/**
|
||
* gtk_expander_set_label_fill:
|
||
* @expander: a #GtkExpander
|
||
* @label_fill: %TRUE if the label should should fill
|
||
* all available horizontal space
|
||
*
|
||
* Sets whether the label widget should fill all available
|
||
* horizontal space allocated to @expander.
|
||
*
|
||
* Since: 2.22
|
||
*/
|
||
void
|
||
gtk_expander_set_label_fill (GtkExpander *expander,
|
||
gboolean label_fill)
|
||
{
|
||
GtkExpanderPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_EXPANDER (expander));
|
||
|
||
priv = expander->priv;
|
||
|
||
label_fill = label_fill != FALSE;
|
||
|
||
if (priv->label_fill != label_fill)
|
||
{
|
||
priv->label_fill = label_fill;
|
||
|
||
if (priv->label_widget != NULL)
|
||
gtk_widget_queue_resize (GTK_WIDGET (expander));
|
||
|
||
g_object_notify (G_OBJECT (expander), "label-fill");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_expander_get_label_fill:
|
||
* @expander: a #GtkExpander
|
||
*
|
||
* Returns whether the label widget will fill all available
|
||
* horizontal space allocated to @expander.
|
||
*
|
||
* Returns: %TRUE if the label widget will fill all
|
||
* available horizontal space
|
||
*
|
||
* Since: 2.22
|
||
*/
|
||
gboolean
|
||
gtk_expander_get_label_fill (GtkExpander *expander)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE);
|
||
|
||
return expander->priv->label_fill;
|
||
}
|
||
|
||
/**
|
||
* gtk_expander_set_resize_toplevel:
|
||
* @expander: a #GtkExpander
|
||
* @resize_toplevel: whether to resize the toplevel
|
||
*
|
||
* Sets whether the expander will resize the toplevel widget
|
||
* containing the expander upon resizing and collpasing.
|
||
*
|
||
* Since: 3.2
|
||
*/
|
||
void
|
||
gtk_expander_set_resize_toplevel (GtkExpander *expander,
|
||
gboolean resize_toplevel)
|
||
{
|
||
g_return_if_fail (GTK_IS_EXPANDER (expander));
|
||
|
||
if (expander->priv->resize_toplevel != resize_toplevel)
|
||
{
|
||
expander->priv->resize_toplevel = resize_toplevel ? TRUE : FALSE;
|
||
g_object_notify (G_OBJECT (expander), "resize-toplevel");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_expander_get_resize_toplevel:
|
||
* @expander: a #GtkExpander
|
||
*
|
||
* Returns whether the expander will resize the toplevel widget
|
||
* containing the expander upon resizing and collpasing.
|
||
*
|
||
* Returns: the “resize toplevel” setting.
|
||
*
|
||
* Since: 3.2
|
||
*/
|
||
gboolean
|
||
gtk_expander_get_resize_toplevel (GtkExpander *expander)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE);
|
||
|
||
return expander->priv->resize_toplevel;
|
||
}
|