gtk2/gtk/gtkeventcontrollerlegacy.c
Matthias Clasen 31bf9da63a Strip const from GdkEvent
Events are refcounted structs, and we generally don't
pass these as const.
2020-02-21 00:51:02 -05:00

121 lines
3.5 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 2017, Red Hat, Inc.
*
* 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/>.
*
* Author(s): Carlos Garnacho <carlosg@gnome.org>
*/
/**
* SECTION:gtkeventcontrollerlegacy
* @Short_description: Event controller for miscellaneous events
* @Title: GtkEventControllerLegacy
* @See_also: #GtkEventController
*
* #GtkEventControllerLegacy is an event controller that gives you
* direct access to the event stream. It should only be used as a
* last resort if none of the other event controllers or gestures
* do the job.
**/
#include "config.h"
#include "gtkeventcontrollerlegacy.h"
#include "gtkeventcontrollerprivate.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtkprivate.h"
struct _GtkEventControllerLegacy
{
GtkEventController parent_instance;
};
struct _GtkEventControllerLegacyClass
{
GtkEventControllerClass parent_class;
};
enum {
EVENT,
N_SIGNALS
};
static guint signals[N_SIGNALS] = { 0, };
G_DEFINE_TYPE (GtkEventControllerLegacy, gtk_event_controller_legacy,
GTK_TYPE_EVENT_CONTROLLER)
static gboolean
gtk_event_controller_legacy_handle_event (GtkEventController *controller,
GdkEvent *event,
double x,
double y)
{
gboolean handled;
g_signal_emit (controller, signals[EVENT], 0, event, &handled);
return handled;
}
static void
gtk_event_controller_legacy_class_init (GtkEventControllerLegacyClass *klass)
{
GtkEventControllerClass *controller_class = GTK_EVENT_CONTROLLER_CLASS (klass);
controller_class->handle_event = gtk_event_controller_legacy_handle_event;
/**
* GtkEventControllerLegacy::event:
* @controller: the object which received the signal.
* @event: the #GdkEvent which triggered this signal
*
* Emitted for each GDK event delivered to @controller.
*
* Returns: %TRUE to stop other handlers from being invoked for the event
* and the emission of this signal. %FALSE to propagate the event further.
*/
signals[EVENT] =
g_signal_new (I_("event"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, _gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT,
G_TYPE_BOOLEAN, 1,
GDK_TYPE_EVENT);
g_signal_set_va_marshaller (signals[EVENT], G_TYPE_FROM_CLASS (klass),
_gtk_marshal_BOOLEAN__OBJECTv);
}
static void
gtk_event_controller_legacy_init (GtkEventControllerLegacy *controller)
{
}
/**
* gtk_event_controller_legacy_new:
*
* Creates a new legacy event controller.
*
* Returns: the newly created event controller.
*/
GtkEventController *
gtk_event_controller_legacy_new (void)
{
return g_object_new (GTK_TYPE_EVENT_CONTROLLER_LEGACY,
NULL);
}