forked from AuroraMiddleware/gtk
9d5c04012e
They just maintain priv->in_button and widget state up-to-date, this basically matters during user interaction, and is already maintained in the gesture ::update handler. This seems to be sufficient.
1157 lines
34 KiB
C
1157 lines
34 KiB
C
/* GTK - The GIMP Toolkit
|
||
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
/*
|
||
* Modified by the GTK+ Team and others 1997-2001. See the AUTHORS
|
||
* file for a list of people on the GTK+ Team. See the ChangeLog
|
||
* files for a list of changes. These files are distributed with
|
||
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
||
*/
|
||
|
||
/**
|
||
* SECTION:gtkbutton
|
||
* @Short_description: A widget that emits a signal when clicked on
|
||
* @Title: GtkButton
|
||
*
|
||
* The #GtkButton widget is generally used to trigger a callback function that is
|
||
* called when the button is pressed. The various signals and how to use them
|
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* are outlined below.
|
||
*
|
||
* The #GtkButton widget can hold any valid child widget. That is, it can hold
|
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* almost any other standard #GtkWidget. The most commonly used child is the
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* #GtkLabel.
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*
|
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* # CSS nodes
|
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*
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* GtkButton has a single CSS node with name button. The node will get the
|
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* style classes .image-button or .text-button, if the content is just an
|
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* image or label, respectively. It may also receive the .flat style class.
|
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*
|
||
* Other style classes that are commonly used with GtkButton include
|
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* .suggested-action and .destructive-action. In special cases, buttons
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* can be made round by adding the .circular style class.
|
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*
|
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* Button-like widgets like #GtkToggleButton, #GtkMenuButton, #GtkVolumeButton,
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* #GtkLockButton, #GtkColorButton, #GtkFontButton or #GtkFileChooserButton use
|
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* style classes such as .toggle, .popup, .scale, .lock, .color, .file
|
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* to differentiate themselves from a plain GtkButton.
|
||
*/
|
||
|
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#include "config.h"
|
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|
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#include "gtkbutton.h"
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#include "gtkbuttonprivate.h"
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|
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#include <string.h>
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#include "gtklabel.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtkimage.h"
|
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#include "gtkbox.h"
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#include "gtksizerequest.h"
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#include "gtktypebuiltins.h"
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#include "gtkwidgetprivate.h"
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#include "gtkprivate.h"
|
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#include "gtkintl.h"
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#include "a11y/gtkbuttonaccessible.h"
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#include "gtkapplicationprivate.h"
|
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#include "gtkactionhelper.h"
|
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#include "gtkcontainerprivate.h"
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|
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/* Time out before giving up on getting a key release when animating
|
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* the close button.
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*/
|
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#define ACTIVATE_TIMEOUT 250
|
||
|
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|
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enum {
|
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CLICKED,
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ENTER,
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LEAVE,
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ACTIVATE,
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LAST_SIGNAL
|
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};
|
||
|
||
enum {
|
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PROP_0,
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PROP_LABEL,
|
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PROP_RELIEF,
|
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PROP_USE_UNDERLINE,
|
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PROP_ICON_NAME,
|
||
|
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/* actionable properties */
|
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PROP_ACTION_NAME,
|
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PROP_ACTION_TARGET,
|
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LAST_PROP = PROP_ACTION_NAME
|
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};
|
||
|
||
enum {
|
||
LABEL_CHILD,
|
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ICON_CHILD,
|
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WIDGET_CHILD
|
||
};
|
||
|
||
|
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static void gtk_button_finalize (GObject *object);
|
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static void gtk_button_dispose (GObject *object);
|
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static void gtk_button_set_property (GObject *object,
|
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guint prop_id,
|
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const GValue *value,
|
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GParamSpec *pspec);
|
||
static void gtk_button_get_property (GObject *object,
|
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guint prop_id,
|
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GValue *value,
|
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GParamSpec *pspec);
|
||
static void gtk_button_screen_changed (GtkWidget *widget,
|
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GdkScreen *previous_screen);
|
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static void gtk_button_unrealize (GtkWidget * widget);
|
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static gint gtk_button_grab_broken (GtkWidget * widget,
|
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GdkEventGrabBroken * event);
|
||
static gint gtk_button_key_release (GtkWidget * widget, GdkEventKey * event);
|
||
static void gtk_real_button_clicked (GtkButton * button);
|
||
static void gtk_real_button_activate (GtkButton *button);
|
||
static void gtk_button_update_state (GtkButton *button);
|
||
static void gtk_button_finish_activate (GtkButton *button,
|
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gboolean do_it);
|
||
|
||
static void gtk_button_state_flags_changed (GtkWidget *widget,
|
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GtkStateFlags previous_state);
|
||
static void gtk_button_grab_notify (GtkWidget *widget,
|
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gboolean was_grabbed);
|
||
static void gtk_button_do_release (GtkButton *button,
|
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gboolean emit_clicked);
|
||
|
||
static void gtk_button_actionable_iface_init (GtkActionableInterface *iface);
|
||
|
||
static void gtk_button_measure_ (GtkWidget *widget,
|
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GtkOrientation orientation,
|
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int for_size,
|
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int *minimum,
|
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int *natural,
|
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int *minimum_baseline,
|
||
int *natural_baseline);
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static void gtk_button_set_child_type (GtkButton *button, guint child_type);
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||
|
||
static GParamSpec *props[LAST_PROP] = { NULL, };
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static guint button_signals[LAST_SIGNAL] = { 0 };
|
||
|
||
G_DEFINE_TYPE_WITH_CODE (GtkButton, gtk_button, GTK_TYPE_BIN,
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G_ADD_PRIVATE (GtkButton)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE, gtk_button_actionable_iface_init))
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|
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static void
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gtk_button_add (GtkContainer *container, GtkWidget *child)
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{
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GtkButton *button = GTK_BUTTON (container);
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if (button->priv->child_type != WIDGET_CHILD)
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gtk_container_remove (container, gtk_bin_get_child (GTK_BIN (button)));
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gtk_button_set_child_type (button, WIDGET_CHILD);
|
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GTK_CONTAINER_CLASS (gtk_button_parent_class)->add (container, child);
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}
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|
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static void
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gtk_button_remove (GtkContainer *container, GtkWidget *child)
|
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{
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GtkButton *button = GTK_BUTTON (container);
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gtk_button_set_child_type (button, WIDGET_CHILD);
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GTK_CONTAINER_CLASS (gtk_button_parent_class)->remove (container, child);
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}
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static void
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gtk_button_unmap (GtkWidget *widget)
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{
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GTK_BUTTON (widget)->priv->in_button = FALSE;
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GTK_WIDGET_CLASS (gtk_button_parent_class)->unmap (widget);
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}
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|
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static void
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gtk_button_class_init (GtkButtonClass *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 = G_OBJECT_CLASS (klass);
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widget_class = (GtkWidgetClass*) klass;
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container_class = GTK_CONTAINER_CLASS (klass);
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gobject_class->dispose = gtk_button_dispose;
|
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gobject_class->finalize = gtk_button_finalize;
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gobject_class->set_property = gtk_button_set_property;
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gobject_class->get_property = gtk_button_get_property;
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widget_class->measure = gtk_button_measure_;
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widget_class->screen_changed = gtk_button_screen_changed;
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widget_class->unrealize = gtk_button_unrealize;
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widget_class->grab_broken_event = gtk_button_grab_broken;
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widget_class->key_release_event = gtk_button_key_release;
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widget_class->state_flags_changed = gtk_button_state_flags_changed;
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widget_class->grab_notify = gtk_button_grab_notify;
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widget_class->unmap = gtk_button_unmap;
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|
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container_class->add = gtk_button_add;
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container_class->remove = gtk_button_remove;
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|
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klass->clicked = NULL;
|
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klass->activate = gtk_real_button_activate;
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props[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 label widget inside the button, if the button contains a label widget"),
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NULL,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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props[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_EXPLICIT_NOTIFY);
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|
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props[PROP_RELIEF] =
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g_param_spec_enum ("relief",
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P_("Border relief"),
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P_("The border relief style"),
|
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GTK_TYPE_RELIEF_STYLE,
|
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GTK_RELIEF_NORMAL,
|
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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||
|
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props[PROP_ICON_NAME] =
|
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g_param_spec_string ("icon-name",
|
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P_("Icon Name"),
|
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P_("The name of the icon used to automatically populate the button"),
|
||
NULL,
|
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
|
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g_object_class_install_properties (gobject_class, LAST_PROP, props);
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|
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g_object_class_override_property (gobject_class, PROP_ACTION_NAME, "action-name");
|
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g_object_class_override_property (gobject_class, PROP_ACTION_TARGET, "action-target");
|
||
|
||
/**
|
||
* GtkButton::clicked:
|
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* @button: the object that received the signal
|
||
*
|
||
* Emitted when the button has been activated (pressed and released).
|
||
*/
|
||
button_signals[CLICKED] =
|
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g_signal_new (I_("clicked"),
|
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G_OBJECT_CLASS_TYPE (gobject_class),
|
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G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
|
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G_STRUCT_OFFSET (GtkButtonClass, clicked),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 0);
|
||
|
||
/**
|
||
* GtkButton::activate:
|
||
* @widget: the object which received the signal.
|
||
*
|
||
* The ::activate signal on GtkButton is an action signal and
|
||
* emitting it causes the button to animate press then release.
|
||
* Applications should never connect to this signal, but use the
|
||
* #GtkButton::clicked signal.
|
||
*/
|
||
button_signals[ACTIVATE] =
|
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g_signal_new (I_("activate"),
|
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G_OBJECT_CLASS_TYPE (gobject_class),
|
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G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
|
||
G_STRUCT_OFFSET (GtkButtonClass, activate),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 0);
|
||
widget_class->activate_signal = button_signals[ACTIVATE];
|
||
|
||
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_BUTTON_ACCESSIBLE);
|
||
gtk_widget_class_set_css_name (widget_class, "button");
|
||
}
|
||
|
||
static void
|
||
multipress_pressed_cb (GtkGestureMultiPress *gesture,
|
||
guint n_press,
|
||
gdouble x,
|
||
gdouble y,
|
||
GtkWidget *widget)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
if (gtk_widget_get_focus_on_click (widget) && !gtk_widget_has_focus (widget))
|
||
gtk_widget_grab_focus (widget);
|
||
|
||
priv->in_button = TRUE;
|
||
|
||
if (!priv->activate_timeout)
|
||
{
|
||
priv->button_down = TRUE;
|
||
gtk_button_update_state (button);
|
||
}
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
|
||
}
|
||
|
||
static gboolean
|
||
touch_release_in_button (GtkButton *button)
|
||
{
|
||
GtkAllocation allocation;
|
||
GdkEvent *event;
|
||
gdouble x, y;
|
||
|
||
event = gtk_get_current_event ();
|
||
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (gdk_event_get_event_type (event) != GDK_TOUCH_END)
|
||
{
|
||
gdk_event_free (event);
|
||
return FALSE;
|
||
}
|
||
|
||
gdk_event_get_coords (event, &x, &y);
|
||
gtk_widget_get_own_allocation (GTK_WIDGET (button), &allocation);
|
||
|
||
gdk_event_free (event);
|
||
|
||
if (gdk_rectangle_contains_point (&allocation, x, y))
|
||
return TRUE;
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
multipress_released_cb (GtkGestureMultiPress *gesture,
|
||
guint n_press,
|
||
gdouble x,
|
||
gdouble y,
|
||
GtkWidget *widget)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
GdkEventSequence *sequence;
|
||
|
||
gtk_button_do_release (button,
|
||
gtk_widget_is_sensitive (GTK_WIDGET (button)) &&
|
||
(button->priv->in_button ||
|
||
touch_release_in_button (button)));
|
||
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
|
||
if (sequence)
|
||
{
|
||
priv->in_button = FALSE;
|
||
gtk_button_update_state (button);
|
||
}
|
||
}
|
||
|
||
static void
|
||
multipress_gesture_update_cb (GtkGesture *gesture,
|
||
GdkEventSequence *sequence,
|
||
GtkButton *button)
|
||
{
|
||
GtkButtonPrivate *priv = button->priv;
|
||
GtkAllocation allocation;
|
||
gboolean in_button;
|
||
gdouble x, y;
|
||
|
||
if (sequence != gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture)))
|
||
return;
|
||
|
||
gtk_widget_get_own_allocation (GTK_WIDGET (button), &allocation);
|
||
gtk_gesture_get_point (gesture, sequence, &x, &y);
|
||
|
||
in_button = gdk_rectangle_contains_point (&allocation, x, y);
|
||
|
||
if (priv->in_button != in_button)
|
||
{
|
||
priv->in_button = in_button;
|
||
gtk_button_update_state (button);
|
||
}
|
||
}
|
||
|
||
static void
|
||
multipress_gesture_cancel_cb (GtkGesture *gesture,
|
||
GdkEventSequence *sequence,
|
||
GtkButton *button)
|
||
{
|
||
gtk_button_do_release (button, FALSE);
|
||
}
|
||
|
||
static void
|
||
gtk_button_set_child_type (GtkButton *button, guint child_type)
|
||
{
|
||
GtkButtonPrivate *priv = gtk_button_get_instance_private (button);
|
||
|
||
if (priv->child_type == child_type)
|
||
return;
|
||
|
||
if (child_type != LABEL_CHILD)
|
||
g_object_notify_by_pspec (G_OBJECT (button), props[PROP_LABEL]);
|
||
else if (child_type != ICON_CHILD)
|
||
g_object_notify_by_pspec (G_OBJECT (button), props[PROP_ICON_NAME]);
|
||
|
||
priv->child_type = child_type;
|
||
}
|
||
|
||
static void
|
||
gtk_button_init (GtkButton *button)
|
||
{
|
||
GtkButtonPrivate *priv;
|
||
|
||
button->priv = gtk_button_get_instance_private (button);
|
||
priv = button->priv;
|
||
|
||
gtk_widget_set_can_focus (GTK_WIDGET (button), TRUE);
|
||
gtk_widget_set_receives_default (GTK_WIDGET (button), TRUE);
|
||
gtk_widget_set_has_window (GTK_WIDGET (button), FALSE);
|
||
|
||
priv->in_button = FALSE;
|
||
priv->button_down = FALSE;
|
||
priv->use_underline = FALSE;
|
||
priv->child_type = WIDGET_CHILD;
|
||
|
||
priv->gesture = gtk_gesture_multi_press_new (GTK_WIDGET (button));
|
||
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (priv->gesture), FALSE);
|
||
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (priv->gesture), TRUE);
|
||
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (priv->gesture), GDK_BUTTON_PRIMARY);
|
||
g_signal_connect (priv->gesture, "pressed", G_CALLBACK (multipress_pressed_cb), button);
|
||
g_signal_connect (priv->gesture, "released", G_CALLBACK (multipress_released_cb), button);
|
||
g_signal_connect (priv->gesture, "update", G_CALLBACK (multipress_gesture_update_cb), button);
|
||
g_signal_connect (priv->gesture, "cancel", G_CALLBACK (multipress_gesture_cancel_cb), button);
|
||
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->gesture), GTK_PHASE_CAPTURE);
|
||
|
||
}
|
||
|
||
static void
|
||
gtk_button_finalize (GObject *object)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (object);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
g_clear_object (&priv->gesture);
|
||
|
||
G_OBJECT_CLASS (gtk_button_parent_class)->finalize (object);
|
||
}
|
||
|
||
static void
|
||
gtk_button_dispose (GObject *object)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (object);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
g_clear_object (&priv->action_helper);
|
||
|
||
G_OBJECT_CLASS (gtk_button_parent_class)->dispose (object);
|
||
}
|
||
|
||
static void
|
||
gtk_button_set_action_name (GtkActionable *actionable,
|
||
const gchar *action_name)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (actionable);
|
||
|
||
if (!button->priv->action_helper)
|
||
button->priv->action_helper = gtk_action_helper_new (actionable);
|
||
|
||
g_signal_handlers_disconnect_by_func (button, gtk_real_button_clicked, NULL);
|
||
if (action_name)
|
||
g_signal_connect_after (button, "clicked", G_CALLBACK (gtk_real_button_clicked), NULL);
|
||
|
||
gtk_action_helper_set_action_name (button->priv->action_helper, action_name);
|
||
}
|
||
|
||
static void
|
||
gtk_button_set_action_target_value (GtkActionable *actionable,
|
||
GVariant *action_target)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (actionable);
|
||
|
||
if (!button->priv->action_helper)
|
||
button->priv->action_helper = gtk_action_helper_new (actionable);
|
||
|
||
gtk_action_helper_set_action_target_value (button->priv->action_helper, action_target);
|
||
}
|
||
|
||
static void
|
||
gtk_button_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (object);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_LABEL:
|
||
gtk_button_set_label (button, g_value_get_string (value));
|
||
break;
|
||
case PROP_RELIEF:
|
||
gtk_button_set_relief (button, g_value_get_enum (value));
|
||
break;
|
||
case PROP_USE_UNDERLINE:
|
||
gtk_button_set_use_underline (button, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_ICON_NAME:
|
||
gtk_button_set_icon_name (button, g_value_get_string (value));
|
||
break;
|
||
case PROP_ACTION_NAME:
|
||
gtk_button_set_action_name (GTK_ACTIONABLE (button), g_value_get_string (value));
|
||
break;
|
||
case PROP_ACTION_TARGET:
|
||
gtk_button_set_action_target_value (GTK_ACTIONABLE (button), g_value_get_variant (value));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_button_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (object);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_LABEL:
|
||
g_value_set_string (value, gtk_button_get_label (button));
|
||
break;
|
||
case PROP_RELIEF:
|
||
g_value_set_enum (value, gtk_button_get_relief (button));
|
||
break;
|
||
case PROP_USE_UNDERLINE:
|
||
g_value_set_boolean (value, priv->use_underline);
|
||
break;
|
||
case PROP_ICON_NAME:
|
||
g_value_set_string (value, gtk_button_get_icon_name (button));
|
||
break;
|
||
case PROP_ACTION_NAME:
|
||
g_value_set_string (value, gtk_action_helper_get_action_name (priv->action_helper));
|
||
break;
|
||
case PROP_ACTION_TARGET:
|
||
g_value_set_variant (value, gtk_action_helper_get_action_target_value (priv->action_helper));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static const gchar *
|
||
gtk_button_get_action_name (GtkActionable *actionable)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (actionable);
|
||
|
||
return gtk_action_helper_get_action_name (button->priv->action_helper);
|
||
}
|
||
|
||
static GVariant *
|
||
gtk_button_get_action_target_value (GtkActionable *actionable)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (actionable);
|
||
|
||
return gtk_action_helper_get_action_target_value (button->priv->action_helper);
|
||
}
|
||
|
||
static void
|
||
gtk_button_actionable_iface_init (GtkActionableInterface *iface)
|
||
{
|
||
iface->get_action_name = gtk_button_get_action_name;
|
||
iface->set_action_name = gtk_button_set_action_name;
|
||
iface->get_action_target_value = gtk_button_get_action_target_value;
|
||
iface->set_action_target_value = gtk_button_set_action_target_value;
|
||
}
|
||
|
||
/**
|
||
* gtk_button_new:
|
||
*
|
||
* Creates a new #GtkButton widget. To add a child widget to the button,
|
||
* use gtk_container_add().
|
||
*
|
||
* Returns: The newly created #GtkButton widget.
|
||
*/
|
||
GtkWidget*
|
||
gtk_button_new (void)
|
||
{
|
||
return g_object_new (GTK_TYPE_BUTTON, NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_new_with_label:
|
||
* @label: The text you want the #GtkLabel to hold.
|
||
*
|
||
* Creates a #GtkButton widget with a #GtkLabel child containing the given
|
||
* text.
|
||
*
|
||
* Returns: The newly created #GtkButton widget.
|
||
*/
|
||
GtkWidget*
|
||
gtk_button_new_with_label (const gchar *label)
|
||
{
|
||
return g_object_new (GTK_TYPE_BUTTON, "label", label, NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_new_from_icon_name:
|
||
* @icon_name: (nullable): an icon name or %NULL
|
||
* @size: (type int): an icon size (#GtkIconSize)
|
||
*
|
||
* Creates a new button containing an icon from the current icon theme.
|
||
*
|
||
* If the icon name isn’t known, a “broken image” icon will be
|
||
* displayed instead. If the current icon theme is changed, the icon
|
||
* will be updated appropriately.
|
||
*
|
||
* Returns: a new #GtkButton displaying the themed icon
|
||
*
|
||
* Since: 3.10
|
||
*/
|
||
GtkWidget*
|
||
gtk_button_new_from_icon_name (const gchar *icon_name,
|
||
GtkIconSize size)
|
||
{
|
||
GtkWidget *button;
|
||
GtkWidget *image;
|
||
|
||
image = gtk_image_new_from_icon_name (icon_name, size);
|
||
button = g_object_new (GTK_TYPE_BUTTON, NULL);
|
||
gtk_container_add (GTK_CONTAINER (button), image);
|
||
|
||
return button;
|
||
}
|
||
|
||
/**
|
||
* gtk_button_new_with_mnemonic:
|
||
* @label: The text of the button, with an underscore in front of the
|
||
* mnemonic character
|
||
*
|
||
* Creates a new #GtkButton containing a 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 #GtkButton
|
||
*/
|
||
GtkWidget*
|
||
gtk_button_new_with_mnemonic (const gchar *label)
|
||
{
|
||
return g_object_new (GTK_TYPE_BUTTON, "label", label, "use-underline", TRUE, NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_clicked:
|
||
* @button: The #GtkButton you want to send the signal to.
|
||
*
|
||
* Emits a #GtkButton::clicked signal to the given #GtkButton.
|
||
*/
|
||
void
|
||
gtk_button_clicked (GtkButton *button)
|
||
{
|
||
g_return_if_fail (GTK_IS_BUTTON (button));
|
||
|
||
g_signal_emit (button, button_signals[CLICKED], 0);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_set_relief:
|
||
* @button: The #GtkButton you want to set relief styles of
|
||
* @relief: The GtkReliefStyle as described above
|
||
*
|
||
* Sets the relief style of the edges of the given #GtkButton widget.
|
||
* Two styles exist, %GTK_RELIEF_NORMAL and %GTK_RELIEF_NONE.
|
||
* The default style is, as one can guess, %GTK_RELIEF_NORMAL.
|
||
*/
|
||
void
|
||
gtk_button_set_relief (GtkButton *button,
|
||
GtkReliefStyle relief)
|
||
{
|
||
GtkStyleContext *context;
|
||
GtkReliefStyle old_relief;
|
||
|
||
g_return_if_fail (GTK_IS_BUTTON (button));
|
||
|
||
old_relief = gtk_button_get_relief (button);
|
||
if (old_relief != relief)
|
||
{
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (button));
|
||
if (relief == GTK_RELIEF_NONE)
|
||
gtk_style_context_add_class (context, GTK_STYLE_CLASS_FLAT);
|
||
else
|
||
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_FLAT);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (button), props[PROP_RELIEF]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_button_get_relief:
|
||
* @button: The #GtkButton you want the #GtkReliefStyle from.
|
||
*
|
||
* Returns the current relief style of the given #GtkButton.
|
||
*
|
||
* Returns: The current #GtkReliefStyle
|
||
*/
|
||
GtkReliefStyle
|
||
gtk_button_get_relief (GtkButton *button)
|
||
{
|
||
GtkStyleContext *context;
|
||
|
||
g_return_val_if_fail (GTK_IS_BUTTON (button), GTK_RELIEF_NORMAL);
|
||
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (button));
|
||
if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_FLAT))
|
||
return GTK_RELIEF_NONE;
|
||
else
|
||
return GTK_RELIEF_NORMAL;
|
||
}
|
||
|
||
static void
|
||
gtk_button_unrealize (GtkWidget *widget)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
if (priv->activate_timeout)
|
||
gtk_button_finish_activate (button, FALSE);
|
||
|
||
GTK_WIDGET_CLASS (gtk_button_parent_class)->unrealize (widget);
|
||
}
|
||
|
||
static void
|
||
gtk_button_do_release (GtkButton *button,
|
||
gboolean emit_clicked)
|
||
{
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
if (priv->button_down)
|
||
{
|
||
priv->button_down = FALSE;
|
||
|
||
if (priv->activate_timeout)
|
||
return;
|
||
|
||
if (emit_clicked)
|
||
gtk_button_clicked (button);
|
||
|
||
gtk_button_update_state (button);
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gtk_button_grab_broken (GtkWidget *widget,
|
||
GdkEventGrabBroken *event)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
|
||
gtk_button_do_release (button, FALSE);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_button_key_release (GtkWidget *widget,
|
||
GdkEventKey *event)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
if (priv->activate_timeout)
|
||
{
|
||
gtk_button_finish_activate (button, TRUE);
|
||
return TRUE;
|
||
}
|
||
else if (GTK_WIDGET_CLASS (gtk_button_parent_class)->key_release_event)
|
||
return GTK_WIDGET_CLASS (gtk_button_parent_class)->key_release_event (widget, event);
|
||
else
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_real_button_clicked (GtkButton *button)
|
||
{
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
if (priv->action_helper)
|
||
gtk_action_helper_activate (priv->action_helper);
|
||
}
|
||
|
||
static gboolean
|
||
button_activate_timeout (gpointer data)
|
||
{
|
||
gtk_button_finish_activate (data, TRUE);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_real_button_activate (GtkButton *button)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (button);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
GdkDevice *device;
|
||
|
||
device = gtk_get_current_event_device ();
|
||
|
||
if (device && gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
|
||
device = gdk_device_get_associated_device (device);
|
||
|
||
if (gtk_widget_get_realized (widget) && !priv->activate_timeout)
|
||
{
|
||
/* bgo#626336 - Only grab if we have a device (from an event), not if we
|
||
* were activated programmatically when no event is available.
|
||
*/
|
||
if (device && gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
|
||
{
|
||
gtk_device_grab_add (widget, device, TRUE);
|
||
priv->grab_keyboard = device;
|
||
}
|
||
|
||
priv->activate_timeout = gdk_threads_add_timeout (ACTIVATE_TIMEOUT,
|
||
button_activate_timeout,
|
||
button);
|
||
g_source_set_name_by_id (priv->activate_timeout, "[gtk+] button_activate_timeout");
|
||
priv->button_down = TRUE;
|
||
gtk_button_update_state (button);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_button_finish_activate (GtkButton *button,
|
||
gboolean do_it)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (button);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
g_source_remove (priv->activate_timeout);
|
||
priv->activate_timeout = 0;
|
||
|
||
if (priv->grab_keyboard)
|
||
{
|
||
gdk_seat_ungrab (gdk_device_get_seat (priv->grab_keyboard));
|
||
gtk_device_grab_remove (widget, priv->grab_keyboard);
|
||
priv->grab_keyboard = NULL;
|
||
}
|
||
|
||
priv->button_down = FALSE;
|
||
|
||
gtk_button_update_state (button);
|
||
|
||
if (do_it)
|
||
gtk_button_clicked (button);
|
||
}
|
||
|
||
static void
|
||
gtk_button_measure_ (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
|
||
|
||
if (child && gtk_widget_get_visible (child))
|
||
{
|
||
gtk_widget_measure (child,
|
||
orientation,
|
||
for_size,
|
||
minimum, natural,
|
||
minimum_baseline, natural_baseline);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_button_set_label:
|
||
* @button: a #GtkButton
|
||
* @label: a string
|
||
*
|
||
* Sets the text of the label of the button to @label.
|
||
*
|
||
* This will also clear any previously set labels.
|
||
*/
|
||
void
|
||
gtk_button_set_label (GtkButton *button,
|
||
const gchar *label)
|
||
{
|
||
GtkButtonPrivate *priv = gtk_button_get_instance_private (button);
|
||
GtkWidget *child;
|
||
GtkStyleContext *context;
|
||
|
||
g_return_if_fail (GTK_IS_BUTTON (button));
|
||
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (button));
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (button));
|
||
|
||
if (priv->child_type != LABEL_CHILD || child == NULL)
|
||
{
|
||
if (child != NULL)
|
||
gtk_container_remove (GTK_CONTAINER (button), child);
|
||
|
||
child = gtk_label_new (NULL);
|
||
if (priv->use_underline)
|
||
{
|
||
gtk_label_set_use_underline (GTK_LABEL (child), priv->use_underline);
|
||
gtk_label_set_mnemonic_widget (GTK_LABEL (child), GTK_WIDGET (button));
|
||
}
|
||
gtk_container_add (GTK_CONTAINER (button), child);
|
||
gtk_style_context_remove_class (context, "image-button");
|
||
gtk_style_context_add_class (context, "text-button");
|
||
}
|
||
|
||
gtk_label_set_label (GTK_LABEL (child), label);
|
||
gtk_button_set_child_type (button, LABEL_CHILD);
|
||
g_object_notify_by_pspec (G_OBJECT (button), props[PROP_LABEL]);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_get_label:
|
||
* @button: a #GtkButton
|
||
*
|
||
* Fetches the text from the label of the button, as set by
|
||
* gtk_button_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.
|
||
*
|
||
* Returns: (nullable): The text of the label widget. This string is owned
|
||
* by the widget and must not be modified or freed.
|
||
*/
|
||
const gchar *
|
||
gtk_button_get_label (GtkButton *button)
|
||
{
|
||
GtkButtonPrivate *priv = gtk_button_get_instance_private (button);
|
||
|
||
g_return_val_if_fail (GTK_IS_BUTTON (button), NULL);
|
||
|
||
if (priv->child_type == LABEL_CHILD)
|
||
{
|
||
GtkWidget *child = gtk_bin_get_child (GTK_BIN (button));
|
||
return gtk_label_get_label (GTK_LABEL (child));
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gtk_button_set_use_underline:
|
||
* @button: a #GtkButton
|
||
* @use_underline: %TRUE if underlines in the text indicate mnemonics
|
||
*
|
||
* If true, an underline in the text of the button label indicates
|
||
* the next character should be used for the mnemonic accelerator key.
|
||
*/
|
||
void
|
||
gtk_button_set_use_underline (GtkButton *button,
|
||
gboolean use_underline)
|
||
{
|
||
GtkButtonPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_BUTTON (button));
|
||
|
||
priv = button->priv;
|
||
|
||
use_underline = use_underline != FALSE;
|
||
|
||
if (use_underline != priv->use_underline)
|
||
{
|
||
if (priv->child_type == LABEL_CHILD)
|
||
{
|
||
GtkWidget *child;
|
||
child = gtk_bin_get_child (GTK_BIN (button));
|
||
|
||
gtk_label_set_use_underline (GTK_LABEL (child), use_underline);
|
||
gtk_label_set_mnemonic_widget (GTK_LABEL (child), GTK_WIDGET (button));
|
||
}
|
||
|
||
priv->use_underline = use_underline;
|
||
g_object_notify_by_pspec (G_OBJECT (button), props[PROP_USE_UNDERLINE]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_button_get_use_underline:
|
||
* @button: a #GtkButton
|
||
*
|
||
* Returns whether an embedded underline in the button label indicates a
|
||
* mnemonic. See gtk_button_set_use_underline().
|
||
*
|
||
* Returns: %TRUE if an embedded underline in the button label
|
||
* indicates the mnemonic accelerator keys.
|
||
*/
|
||
gboolean
|
||
gtk_button_get_use_underline (GtkButton *button)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_BUTTON (button), FALSE);
|
||
|
||
return button->priv->use_underline;
|
||
}
|
||
|
||
static void
|
||
gtk_button_update_state (GtkButton *button)
|
||
{
|
||
GtkButtonPrivate *priv = button->priv;
|
||
GtkStateFlags new_state;
|
||
gboolean depressed;
|
||
|
||
if (priv->activate_timeout)
|
||
depressed = TRUE;
|
||
else
|
||
depressed = priv->in_button && priv->button_down;
|
||
|
||
new_state = gtk_widget_get_state_flags (GTK_WIDGET (button)) & ~(GTK_STATE_FLAG_ACTIVE);
|
||
|
||
if (depressed)
|
||
new_state |= GTK_STATE_FLAG_ACTIVE;
|
||
|
||
gtk_widget_set_state_flags (GTK_WIDGET (button), new_state, TRUE);
|
||
}
|
||
|
||
static void
|
||
gtk_button_screen_changed (GtkWidget *widget,
|
||
GdkScreen *previous_screen)
|
||
{
|
||
GtkButton *button;
|
||
GtkButtonPrivate *priv;
|
||
|
||
if (!gtk_widget_has_screen (widget))
|
||
return;
|
||
|
||
button = GTK_BUTTON (widget);
|
||
priv = button->priv;
|
||
|
||
/* If the button is being pressed while the screen changes the
|
||
release might never occur, so we reset the state. */
|
||
if (priv->button_down)
|
||
{
|
||
priv->button_down = FALSE;
|
||
gtk_button_update_state (button);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_button_state_flags_changed (GtkWidget *widget,
|
||
GtkStateFlags previous_state)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
|
||
if (!gtk_widget_is_sensitive (widget))
|
||
gtk_button_do_release (button, FALSE);
|
||
}
|
||
|
||
static void
|
||
gtk_button_grab_notify (GtkWidget *widget,
|
||
gboolean was_grabbed)
|
||
{
|
||
GtkButton *button = GTK_BUTTON (widget);
|
||
GtkButtonPrivate *priv = button->priv;
|
||
|
||
if (priv->activate_timeout &&
|
||
priv->grab_keyboard &&
|
||
gtk_widget_device_is_shadowed (widget, priv->grab_keyboard))
|
||
gtk_button_finish_activate (button, FALSE);
|
||
|
||
if (!was_grabbed)
|
||
gtk_button_do_release (button, FALSE);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_set_icon_name:
|
||
* @button: A #GtkButton
|
||
* @icon_name: A icon name
|
||
*
|
||
* Adds a #GtkImage with the given icon name as a child. The icon will be
|
||
* of size %GTK_ICON_SIZE_BUTTON. If @button already contains a child widget,
|
||
* that child widget will be removed and replaced with the image.
|
||
*
|
||
* Since: 3.90
|
||
*/
|
||
void
|
||
gtk_button_set_icon_name (GtkButton *button,
|
||
const char *icon_name)
|
||
{
|
||
GtkButtonPrivate *priv = gtk_button_get_instance_private (button);
|
||
GtkWidget *child;
|
||
GtkStyleContext *context;
|
||
|
||
g_return_if_fail (GTK_IS_BUTTON (button));
|
||
g_return_if_fail (icon_name != NULL);
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (button));
|
||
context = gtk_widget_get_style_context (GTK_WIDGET (button));
|
||
|
||
if (priv->child_type != ICON_CHILD || child == NULL)
|
||
{
|
||
if (child != NULL)
|
||
gtk_container_remove (GTK_CONTAINER (button), child);
|
||
|
||
child = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_BUTTON);
|
||
gtk_container_add (GTK_CONTAINER (button), child);
|
||
gtk_style_context_remove_class (context, "text-button");
|
||
gtk_style_context_add_class (context, "image-button");
|
||
}
|
||
else
|
||
{
|
||
gtk_image_set_from_icon_name (GTK_IMAGE (child), icon_name, GTK_ICON_SIZE_BUTTON);
|
||
}
|
||
|
||
gtk_button_set_child_type (button, ICON_CHILD);
|
||
g_object_notify_by_pspec (G_OBJECT (button), props[PROP_ICON_NAME]);
|
||
}
|
||
|
||
/**
|
||
* gtk_button_get_icon_name:
|
||
* @button: A #GtkButton
|
||
*
|
||
* Returns the icon name set via gtk_button_set_icon_name().
|
||
*
|
||
* Returns: (nullable): The icon name set via gtk_button_set_icon_name()
|
||
*
|
||
* Since: 3.90
|
||
*/
|
||
const char *
|
||
gtk_button_get_icon_name (GtkButton *button)
|
||
{
|
||
GtkButtonPrivate *priv = gtk_button_get_instance_private (button);
|
||
|
||
g_return_val_if_fail (GTK_IS_BUTTON (button), NULL);
|
||
|
||
if (priv->child_type == ICON_CHILD)
|
||
{
|
||
const char *icon_name;
|
||
GtkWidget *child = gtk_bin_get_child (GTK_BIN (button));
|
||
gtk_image_get_icon_name (GTK_IMAGE (child), &icon_name, NULL);
|
||
|
||
return icon_name;
|
||
}
|
||
|
||
return NULL;
|
||
}
|