mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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134e159bc9
Before delivering events to GTK, make sure they're sane. For now, this means making sure the surface and device are from the same display.
2469 lines
59 KiB
C
2469 lines
59 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 Lesser General Public
|
||
* 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
|
||
* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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||
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/*
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||
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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||
* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkintl.h"
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#include "gdkeventsprivate.h"
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#include "gdkinternals.h"
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#include "gdkdisplayprivate.h"
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#include "gdkdragprivate.h"
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#include "gdkdropprivate.h"
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#include "gdk-private.h"
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#include <string.h>
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#include <math.h>
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/**
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* SECTION:events
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* @Short_description: Functions for handling events from the window system
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* @Title: Events
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* @See_also: [Event Structures][gdk3-Event-Structures]
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*
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* This section describes functions dealing with events from the window
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* system.
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*
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* In GTK+ applications the events are handled automatically in
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* gtk_main_do_event() and passed on to the appropriate widgets,
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* so these functions are rarely needed.
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*/
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/**
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* GdkEvent:
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*
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* The GdkEvent struct contains only private fields and
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* should not be accessed directly.
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*/
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||
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/**
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* GdkEventSequence:
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*
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* GdkEventSequence is an opaque type representing a sequence
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* of related touch events.
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*/
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/* Private variable declarations
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*/
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static void gdk_event_constructed (GObject *object);
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static void gdk_event_finalize (GObject *object);
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G_DEFINE_TYPE (GdkEvent, gdk_event, G_TYPE_OBJECT)
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enum {
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PROP_0,
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PROP_EVENT_TYPE,
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N_PROPS
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};
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static GParamSpec *event_props[N_PROPS] = { NULL, };
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#define EVENT_PAYLOAD(ev) (&(ev)->any.type)
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#define EVENT_PAYLOAD_SIZE (sizeof (GdkEvent) - sizeof (GObject))
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static void
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gdk_event_init (GdkEvent *event)
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{
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}
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static void
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gdk_event_real_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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{
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GdkEvent *event = GDK_EVENT (object);
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switch (prop_id)
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{
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case PROP_EVENT_TYPE:
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g_value_set_enum (value, event->any.type);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gdk_event_real_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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{
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GdkEvent *event = GDK_EVENT (object);
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switch (prop_id)
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{
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case PROP_EVENT_TYPE:
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event->any.type = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gdk_event_class_init (GdkEventClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->get_property = gdk_event_real_get_property;
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object_class->set_property = gdk_event_real_set_property;
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object_class->constructed = gdk_event_constructed;
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object_class->finalize = gdk_event_finalize;
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event_props[PROP_EVENT_TYPE] =
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g_param_spec_enum ("event-type",
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P_("Event type"),
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P_("Event type"),
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GDK_TYPE_EVENT_TYPE, GDK_NOTHING,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY);
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g_object_class_install_properties (object_class, N_PROPS, event_props);
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}
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gboolean
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check_event_sanity (GdkEvent *event)
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{
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GdkDisplay *display;
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GdkSurface *surface;
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GdkDevice *device;
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display = gdk_event_get_display (event);
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surface = gdk_event_get_surface (event);
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device = gdk_event_get_device (event);
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if (gdk_event_get_event_type (event) == GDK_NOTHING)
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{
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g_warning ("Ignoring GDK_NOTHING events; they're good for nothing");
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return FALSE;
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}
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if (surface && display != gdk_surface_get_display (surface))
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{
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char *type = g_enum_to_string (GDK_TYPE_EVENT_TYPE, event->any.type);
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g_warning ("Event of type %s with mismatched surface display", type);
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g_free (type);
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return FALSE;
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}
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if (device && display != gdk_device_get_display (device))
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{
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char *type = g_enum_to_string (GDK_TYPE_EVENT_TYPE, event->any.type);
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g_warning ("Event of type %s with mismatched device display", type);
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g_free (type);
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return FALSE;
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}
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return TRUE;
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}
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void
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_gdk_event_emit (GdkEvent *event)
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{
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if (!check_event_sanity (event))
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return;
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if (gdk_drag_handle_source_event (event))
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return;
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gdk_surface_handle_event (event);
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}
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/*********************************************
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* Functions for maintaining the event queue *
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*********************************************/
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/**
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* _gdk_event_queue_find_first:
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* @display: a #GdkDisplay
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*
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* Find the first event on the queue that is not still
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* being filled in.
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*
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* Returns: (nullable): Pointer to the list node for that event, or
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* %NULL.
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**/
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GList*
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_gdk_event_queue_find_first (GdkDisplay *display)
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{
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GList *tmp_list;
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GList *pending_motion = NULL;
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gboolean paused = display->event_pause_count > 0;
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tmp_list = g_queue_peek_head_link (&display->queued_events);
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while (tmp_list)
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{
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GdkEvent *event = tmp_list->data;
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if ((event->any.flags & GDK_EVENT_PENDING) == 0 &&
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(!paused || (event->any.flags & GDK_EVENT_FLUSHED) != 0))
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{
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if (pending_motion)
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return pending_motion;
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if (event->any.type == GDK_MOTION_NOTIFY && (event->any.flags & GDK_EVENT_FLUSHED) == 0)
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pending_motion = tmp_list;
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else
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return tmp_list;
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}
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tmp_list = tmp_list->next;
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}
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return NULL;
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}
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/**
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* _gdk_event_queue_append:
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* @display: a #GdkDisplay
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* @event: Event to append.
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*
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* Appends an event onto the tail of the event queue.
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*
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* Returns: the newly appended list node.
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**/
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GList *
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_gdk_event_queue_append (GdkDisplay *display,
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GdkEvent *event)
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{
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g_queue_push_tail (&display->queued_events, event);
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return g_queue_peek_tail_link (&display->queued_events);
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}
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/**
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* _gdk_event_queue_insert_after:
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* @display: a #GdkDisplay
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* @sibling: Append after this event.
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* @event: Event to append.
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*
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* Appends an event after the specified event, or if it isn’t in
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* the queue, onto the tail of the event queue.
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*/
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void
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_gdk_event_queue_insert_after (GdkDisplay *display,
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GdkEvent *sibling,
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GdkEvent *event)
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{
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GList *prev = g_queue_find (&display->queued_events, sibling);
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if (prev)
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g_queue_insert_after (&display->queued_events, prev, event);
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else
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g_queue_push_tail (&display->queued_events, event);
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}
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/**
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* _gdk_event_queue_insert_before:
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* @display: a #GdkDisplay
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* @sibling: Append before this event
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* @event: Event to prepend
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*
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* Prepends an event before the specified event, or if it isn’t in
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* the queue, onto the head of the event queue.
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*
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* Returns: the newly prepended list node.
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*/
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void
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_gdk_event_queue_insert_before (GdkDisplay *display,
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GdkEvent *sibling,
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GdkEvent *event)
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{
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GList *next = g_queue_find (&display->queued_events, sibling);
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if (next)
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g_queue_insert_before (&display->queued_events, next, event);
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else
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g_queue_push_head (&display->queued_events, event);
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}
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/**
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* _gdk_event_queue_remove_link:
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* @display: a #GdkDisplay
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* @node: node to remove
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*
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* Removes a specified list node from the event queue.
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**/
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void
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_gdk_event_queue_remove_link (GdkDisplay *display,
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GList *node)
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{
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g_queue_unlink (&display->queued_events, node);
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}
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/**
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* _gdk_event_unqueue:
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* @display: a #GdkDisplay
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*
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* Removes and returns the first event from the event
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* queue that is not still being filled in.
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*
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* Returns: (nullable): the event, or %NULL. Ownership is transferred
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* to the caller.
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**/
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GdkEvent*
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_gdk_event_unqueue (GdkDisplay *display)
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{
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GdkEvent *event = NULL;
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GList *tmp_list;
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tmp_list = _gdk_event_queue_find_first (display);
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if (tmp_list)
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{
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event = tmp_list->data;
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_gdk_event_queue_remove_link (display, tmp_list);
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g_list_free_1 (tmp_list);
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}
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return event;
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}
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static void
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gdk_event_push_history (GdkEvent *event,
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const GdkEvent *history_event)
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{
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GdkTimeCoord *hist;
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GdkDevice *device;
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gint i, n_axes;
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g_assert (event->any.type == GDK_MOTION_NOTIFY);
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g_assert (history_event->any.type == GDK_MOTION_NOTIFY);
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hist = g_new0 (GdkTimeCoord, 1);
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device = gdk_event_get_device (history_event);
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n_axes = gdk_device_get_n_axes (device);
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for (i = 0; i <= MIN (n_axes, GDK_MAX_TIMECOORD_AXES); i++)
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gdk_event_get_axis (history_event, i, &hist->axes[i]);
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event->motion.history = g_list_prepend (event->motion.history, hist);
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}
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void
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_gdk_event_queue_handle_motion_compression (GdkDisplay *display)
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{
|
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GList *tmp_list;
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GList *pending_motions = NULL;
|
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GdkSurface *pending_motion_surface = NULL;
|
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GdkDevice *pending_motion_device = NULL;
|
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GdkEvent *last_motion = NULL;
|
||
|
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/* If the last N events in the event queue are motion notify
|
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* events for the same surface, drop all but the last */
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tmp_list = g_queue_peek_tail_link (&display->queued_events);
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|
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while (tmp_list)
|
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{
|
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GdkEvent *event = tmp_list->data;
|
||
|
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if (event->any.flags & GDK_EVENT_PENDING)
|
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break;
|
||
|
||
if (event->any.type != GDK_MOTION_NOTIFY)
|
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break;
|
||
|
||
if (pending_motion_surface != NULL &&
|
||
pending_motion_surface != event->any.surface)
|
||
break;
|
||
|
||
if (pending_motion_device != NULL &&
|
||
pending_motion_device != event->any.device)
|
||
break;
|
||
|
||
if (!last_motion)
|
||
last_motion = event;
|
||
|
||
pending_motion_surface = event->any.surface;
|
||
pending_motion_device = event->any.device;
|
||
pending_motions = tmp_list;
|
||
|
||
tmp_list = tmp_list->prev;
|
||
}
|
||
|
||
while (pending_motions && pending_motions->next != NULL)
|
||
{
|
||
GList *next = pending_motions->next;
|
||
|
||
if (last_motion &&
|
||
(last_motion->motion.state &
|
||
(GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK |
|
||
GDK_BUTTON4_MASK | GDK_BUTTON5_MASK)))
|
||
gdk_event_push_history (last_motion, pending_motions->data);
|
||
|
||
g_object_unref (pending_motions->data);
|
||
g_queue_delete_link (&display->queued_events, pending_motions);
|
||
pending_motions = next;
|
||
}
|
||
|
||
if (g_queue_get_length (&display->queued_events) == 1 &&
|
||
g_queue_peek_head_link (&display->queued_events) == pending_motions)
|
||
{
|
||
GdkFrameClock *clock = gdk_surface_get_frame_clock (pending_motion_surface);
|
||
if (clock) /* might be NULL if surface was destroyed */
|
||
gdk_frame_clock_request_phase (clock, GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS);
|
||
}
|
||
}
|
||
|
||
void
|
||
_gdk_event_queue_flush (GdkDisplay *display)
|
||
{
|
||
GList *tmp_list;
|
||
|
||
for (tmp_list = display->queued_events.head; tmp_list; tmp_list = tmp_list->next)
|
||
{
|
||
GdkEvent *event = tmp_list->data;
|
||
event->any.flags |= GDK_EVENT_FLUSHED;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gdk_event_new:
|
||
* @type: a #GdkEventType
|
||
*
|
||
* Creates a new event of the given type. All fields are set to 0.
|
||
*
|
||
* Returns: a newly-allocated #GdkEvent. Free with g_object_unref()
|
||
*/
|
||
GdkEvent*
|
||
gdk_event_new (GdkEventType type)
|
||
{
|
||
return g_object_new (GDK_TYPE_EVENT,
|
||
"event-type", type,
|
||
NULL);
|
||
}
|
||
|
||
static void
|
||
gdk_event_constructed (GObject *object)
|
||
{
|
||
GdkEvent *new_event = GDK_EVENT (object);
|
||
|
||
/*
|
||
* Bytewise 0 initialization is reasonable for most of the
|
||
* current event types. Explicitely initialize double fields
|
||
* since I trust bytewise 0 == 0. less than for integers
|
||
* or pointers.
|
||
*/
|
||
switch ((guint) new_event->any.type)
|
||
{
|
||
case GDK_MOTION_NOTIFY:
|
||
new_event->motion.x = 0.;
|
||
new_event->motion.y = 0.;
|
||
new_event->motion.x_root = 0.;
|
||
new_event->motion.y_root = 0.;
|
||
break;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
new_event->button.x = 0.;
|
||
new_event->button.y = 0.;
|
||
new_event->button.x_root = 0.;
|
||
new_event->button.y_root = 0.;
|
||
break;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
new_event->touch.x = 0.;
|
||
new_event->touch.y = 0.;
|
||
new_event->touch.x_root = 0.;
|
||
new_event->touch.y_root = 0.;
|
||
break;
|
||
case GDK_SCROLL:
|
||
new_event->scroll.x = 0.;
|
||
new_event->scroll.y = 0.;
|
||
new_event->scroll.x_root = 0.;
|
||
new_event->scroll.y_root = 0.;
|
||
new_event->scroll.delta_x = 0.;
|
||
new_event->scroll.delta_y = 0.;
|
||
new_event->scroll.is_stop = FALSE;
|
||
break;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
new_event->crossing.x = 0.;
|
||
new_event->crossing.y = 0.;
|
||
new_event->crossing.x_root = 0.;
|
||
new_event->crossing.y_root = 0.;
|
||
break;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
new_event->touchpad_swipe.x = 0;
|
||
new_event->touchpad_swipe.y = 0;
|
||
new_event->touchpad_swipe.dx = 0;
|
||
new_event->touchpad_swipe.dy = 0;
|
||
new_event->touchpad_swipe.x_root = 0;
|
||
new_event->touchpad_swipe.y_root = 0;
|
||
break;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
new_event->touchpad_pinch.x = 0;
|
||
new_event->touchpad_pinch.y = 0;
|
||
new_event->touchpad_pinch.dx = 0;
|
||
new_event->touchpad_pinch.dy = 0;
|
||
new_event->touchpad_pinch.angle_delta = 0;
|
||
new_event->touchpad_pinch.scale = 0;
|
||
new_event->touchpad_pinch.x_root = 0;
|
||
new_event->touchpad_pinch.y_root = 0;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
G_OBJECT_CLASS (gdk_event_parent_class)->constructed (object);
|
||
}
|
||
|
||
void
|
||
gdk_event_set_pointer_emulated (GdkEvent *event,
|
||
gboolean emulated)
|
||
{
|
||
if (emulated)
|
||
event->any.flags |= GDK_EVENT_POINTER_EMULATED;
|
||
else
|
||
event->any.flags &= ~(GDK_EVENT_POINTER_EMULATED);
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_pointer_emulated:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Returns whether this event is an 'emulated' pointer event (typically
|
||
* from a touch event), as opposed to a real one.
|
||
*
|
||
* Returns: %TRUE if this event is emulated
|
||
*/
|
||
gboolean
|
||
gdk_event_get_pointer_emulated (GdkEvent *event)
|
||
{
|
||
return (event->any.flags & GDK_EVENT_POINTER_EMULATED) != 0;
|
||
}
|
||
|
||
static GdkTimeCoord *
|
||
copy_time_coord (const GdkTimeCoord *coord)
|
||
{
|
||
return g_memdup (coord, sizeof (GdkTimeCoord));
|
||
}
|
||
|
||
/**
|
||
* gdk_event_copy:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Copies a #GdkEvent, copying or incrementing the reference count of the
|
||
* resources associated with it (e.g. #GdkSurface’s and strings).
|
||
*
|
||
* Returns: (transfer full): a copy of @event. Free with g_object_unref()
|
||
*/
|
||
GdkEvent*
|
||
gdk_event_copy (const GdkEvent *event)
|
||
{
|
||
GdkEvent *new_event;
|
||
|
||
g_return_val_if_fail (event != NULL, NULL);
|
||
|
||
new_event = gdk_event_new (event->any.type);
|
||
|
||
memcpy (EVENT_PAYLOAD (new_event),
|
||
EVENT_PAYLOAD (event),
|
||
EVENT_PAYLOAD_SIZE);
|
||
|
||
if (new_event->any.surface)
|
||
g_object_ref (new_event->any.surface);
|
||
if (new_event->any.device)
|
||
g_object_ref (new_event->any.device);
|
||
if (new_event->any.source_device)
|
||
g_object_ref (new_event->any.source_device);
|
||
if (new_event->any.target)
|
||
g_object_ref (new_event->any.target);
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
if (event->crossing.child_surface != NULL)
|
||
g_object_ref (event->crossing.child_surface);
|
||
if (event->crossing.related_target)
|
||
g_object_ref (event->crossing.related_target);
|
||
break;
|
||
|
||
case GDK_FOCUS_CHANGE:
|
||
if (event->focus_change.related_target)
|
||
g_object_ref (event->focus_change.related_target);
|
||
break;
|
||
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
g_object_ref (event->dnd.drop);
|
||
break;
|
||
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
if (event->button.axes)
|
||
new_event->button.axes = g_memdup (event->button.axes,
|
||
sizeof (gdouble) * gdk_device_get_n_axes (event->any.device));
|
||
if (event->button.tool)
|
||
g_object_ref (new_event->button.tool);
|
||
break;
|
||
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
if (event->touch.axes)
|
||
new_event->touch.axes = g_memdup (event->touch.axes,
|
||
sizeof (gdouble) * gdk_device_get_n_axes (event->any.device));
|
||
break;
|
||
|
||
case GDK_MOTION_NOTIFY:
|
||
if (event->motion.axes)
|
||
new_event->motion.axes = g_memdup (event->motion.axes,
|
||
sizeof (gdouble) * gdk_device_get_n_axes (event->any.device));
|
||
if (event->motion.tool)
|
||
g_object_ref (new_event->motion.tool);
|
||
|
||
if (event->motion.history)
|
||
{
|
||
new_event->motion.history = g_list_copy_deep (event->motion.history,
|
||
(GCopyFunc) copy_time_coord, NULL);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
_gdk_display_event_data_copy (gdk_event_get_display (event), event, new_event);
|
||
|
||
return new_event;
|
||
}
|
||
|
||
static void
|
||
gdk_event_finalize (GObject *object)
|
||
{
|
||
GdkEvent *event = GDK_EVENT (object);
|
||
GdkDisplay *display;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
g_clear_object (&event->crossing.child_surface);
|
||
g_clear_object (&event->crossing.related_target);
|
||
break;
|
||
|
||
case GDK_FOCUS_CHANGE:
|
||
g_clear_object (&event->focus_change.related_target);
|
||
break;
|
||
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
g_clear_object (&event->dnd.drop);
|
||
break;
|
||
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
g_clear_object (&event->button.tool);
|
||
g_free (event->button.axes);
|
||
break;
|
||
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
g_free (event->touch.axes);
|
||
break;
|
||
|
||
case GDK_MOTION_NOTIFY:
|
||
g_clear_object (&event->motion.tool);
|
||
g_free (event->motion.axes);
|
||
g_list_free_full (event->motion.history, g_free);
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
display = gdk_event_get_display (event);
|
||
if (display)
|
||
_gdk_display_event_data_free (display, event);
|
||
|
||
if (event->any.surface)
|
||
g_object_unref (event->any.surface);
|
||
|
||
g_clear_object (&event->any.device);
|
||
g_clear_object (&event->any.source_device);
|
||
g_clear_object (&event->any.target);
|
||
|
||
G_OBJECT_CLASS (gdk_event_parent_class)->finalize (object);
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_surface:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Extracts the #GdkSurface associated with an event.
|
||
*
|
||
* Returns: (transfer none): The #GdkSurface associated with the event
|
||
*/
|
||
GdkSurface *
|
||
gdk_event_get_surface (const GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event != NULL, NULL);
|
||
|
||
return event->any.surface;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_time:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Returns the time stamp from @event, if there is one; otherwise
|
||
* returns #GDK_CURRENT_TIME. If @event is %NULL, returns #GDK_CURRENT_TIME.
|
||
*
|
||
* Returns: time stamp field from @event
|
||
**/
|
||
guint32
|
||
gdk_event_get_time (const GdkEvent *event)
|
||
{
|
||
if (event)
|
||
switch (event->any.type)
|
||
{
|
||
case GDK_MOTION_NOTIFY:
|
||
return event->motion.time;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
return event->button.time;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
return event->touch.time;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
return event->touchpad_swipe.time;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
return event->touchpad_pinch.time;
|
||
case GDK_SCROLL:
|
||
return event->scroll.time;
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
return event->key.time;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
return event->crossing.time;
|
||
case GDK_PROXIMITY_IN:
|
||
case GDK_PROXIMITY_OUT:
|
||
return event->proximity.time;
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
return event->dnd.time;
|
||
case GDK_PAD_BUTTON_PRESS:
|
||
case GDK_PAD_BUTTON_RELEASE:
|
||
return event->pad_button.time;
|
||
case GDK_PAD_RING:
|
||
case GDK_PAD_STRIP:
|
||
return event->pad_axis.time;
|
||
case GDK_PAD_GROUP_MODE:
|
||
return event->pad_group_mode.time;
|
||
case GDK_CONFIGURE:
|
||
case GDK_FOCUS_CHANGE:
|
||
case GDK_NOTHING:
|
||
case GDK_DELETE:
|
||
case GDK_DESTROY:
|
||
case GDK_GRAB_BROKEN:
|
||
case GDK_EVENT_LAST:
|
||
default:
|
||
/* return current time */
|
||
break;
|
||
}
|
||
|
||
return GDK_CURRENT_TIME;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_state:
|
||
* @event: (allow-none): a #GdkEvent or %NULL
|
||
* @state: (out): return location for state
|
||
*
|
||
* If the event contains a “state” field, puts that field in @state.
|
||
*
|
||
* Otherwise stores an empty state (0).
|
||
* @event may be %NULL, in which case it’s treated
|
||
* as if the event had no state field.
|
||
*
|
||
* Returns: %TRUE if there was a state field in the event
|
||
**/
|
||
gboolean
|
||
gdk_event_get_state (const GdkEvent *event,
|
||
GdkModifierType *state)
|
||
{
|
||
g_return_val_if_fail (state != NULL, FALSE);
|
||
|
||
if (event)
|
||
switch (event->any.type)
|
||
{
|
||
case GDK_MOTION_NOTIFY:
|
||
*state = event->motion.state;
|
||
return TRUE;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
*state = event->button.state;
|
||
return TRUE;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
*state = event->touch.state;
|
||
return TRUE;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
*state = event->touchpad_swipe.state;
|
||
return TRUE;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
*state = event->touchpad_pinch.state;
|
||
return TRUE;
|
||
case GDK_SCROLL:
|
||
*state = event->scroll.state;
|
||
return TRUE;
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
*state = event->key.state;
|
||
return TRUE;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
*state = event->crossing.state;
|
||
return TRUE;
|
||
case GDK_CONFIGURE:
|
||
case GDK_FOCUS_CHANGE:
|
||
case GDK_PROXIMITY_IN:
|
||
case GDK_PROXIMITY_OUT:
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
case GDK_NOTHING:
|
||
case GDK_DELETE:
|
||
case GDK_DESTROY:
|
||
case GDK_GRAB_BROKEN:
|
||
case GDK_PAD_BUTTON_PRESS:
|
||
case GDK_PAD_BUTTON_RELEASE:
|
||
case GDK_PAD_RING:
|
||
case GDK_PAD_STRIP:
|
||
case GDK_PAD_GROUP_MODE:
|
||
case GDK_EVENT_LAST:
|
||
default:
|
||
/* no state field */
|
||
break;
|
||
}
|
||
|
||
*state = 0;
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_coords:
|
||
* @event: a #GdkEvent
|
||
* @x_win: (out) (optional): location to put event surface x coordinate
|
||
* @y_win: (out) (optional): location to put event surface y coordinate
|
||
*
|
||
* Extract the event surface relative x/y coordinates from an event.
|
||
*
|
||
* Returns: %TRUE if the event delivered event surface coordinates
|
||
**/
|
||
gboolean
|
||
gdk_event_get_coords (const GdkEvent *event,
|
||
gdouble *x_win,
|
||
gdouble *y_win)
|
||
{
|
||
gdouble x = 0, y = 0;
|
||
gboolean fetched = TRUE;
|
||
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_CONFIGURE:
|
||
x = event->configure.x;
|
||
y = event->configure.y;
|
||
break;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
x = event->crossing.x;
|
||
y = event->crossing.y;
|
||
break;
|
||
case GDK_SCROLL:
|
||
x = event->scroll.x;
|
||
y = event->scroll.y;
|
||
break;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
x = event->button.x;
|
||
y = event->button.y;
|
||
break;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
x = event->touch.x;
|
||
y = event->touch.y;
|
||
break;
|
||
case GDK_MOTION_NOTIFY:
|
||
x = event->motion.x;
|
||
y = event->motion.y;
|
||
break;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
x = event->touchpad_swipe.x;
|
||
y = event->touchpad_swipe.y;
|
||
break;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
x = event->touchpad_pinch.x;
|
||
y = event->touchpad_pinch.y;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (x_win)
|
||
*x_win = x;
|
||
if (y_win)
|
||
*y_win = y;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_root_coords:
|
||
* @event: a #GdkEvent
|
||
* @x_root: (out) (optional): location to put root window x coordinate
|
||
* @y_root: (out) (optional): location to put root window y coordinate
|
||
*
|
||
* Extract the root window relative x/y coordinates from an event.
|
||
*
|
||
* Returns: %TRUE if the event delivered root window coordinates
|
||
**/
|
||
gboolean
|
||
gdk_event_get_root_coords (const GdkEvent *event,
|
||
gdouble *x_root,
|
||
gdouble *y_root)
|
||
{
|
||
gdouble x = 0, y = 0;
|
||
gboolean fetched = TRUE;
|
||
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_MOTION_NOTIFY:
|
||
x = event->motion.x_root;
|
||
y = event->motion.y_root;
|
||
break;
|
||
case GDK_SCROLL:
|
||
x = event->scroll.x_root;
|
||
y = event->scroll.y_root;
|
||
break;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
x = event->button.x_root;
|
||
y = event->button.y_root;
|
||
break;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
x = event->touch.x_root;
|
||
y = event->touch.y_root;
|
||
break;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
x = event->crossing.x_root;
|
||
y = event->crossing.y_root;
|
||
break;
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
x = event->dnd.x_root;
|
||
y = event->dnd.y_root;
|
||
break;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
x = event->touchpad_swipe.x_root;
|
||
y = event->touchpad_swipe.y_root;
|
||
break;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
x = event->touchpad_pinch.x_root;
|
||
y = event->touchpad_pinch.y_root;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (x_root)
|
||
*x_root = x;
|
||
if (y_root)
|
||
*y_root = y;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
void
|
||
gdk_event_set_coords (GdkEvent *event,
|
||
gdouble x,
|
||
gdouble y)
|
||
{
|
||
g_return_if_fail (event != NULL);
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_CONFIGURE:
|
||
event->configure.x = x;
|
||
event->configure.y = y;
|
||
break;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
event->crossing.x = x;
|
||
event->crossing.y = y;
|
||
break;
|
||
case GDK_SCROLL:
|
||
event->scroll.x = x;
|
||
event->scroll.y = y;
|
||
break;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
event->button.x = x;
|
||
event->button.y = y;
|
||
break;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
event->touch.x = x;
|
||
event->touch.y = y;
|
||
break;
|
||
case GDK_MOTION_NOTIFY:
|
||
event->motion.x = x;
|
||
event->motion.y = y;
|
||
break;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
event->touchpad_swipe.x = x;
|
||
event->touchpad_swipe.y = y;
|
||
break;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
event->touchpad_pinch.x = x;
|
||
event->touchpad_pinch.y = y;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_button:
|
||
* @event: a #GdkEvent
|
||
* @button: (out): location to store mouse button number
|
||
*
|
||
* Extract the button number from an event.
|
||
*
|
||
* Returns: %TRUE if the event delivered a button number
|
||
**/
|
||
gboolean
|
||
gdk_event_get_button (const GdkEvent *event,
|
||
guint *button)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
guint number = 0;
|
||
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
number = event->button.button;
|
||
break;
|
||
case GDK_PAD_BUTTON_PRESS:
|
||
case GDK_PAD_BUTTON_RELEASE:
|
||
number = event->pad_button.button;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (button)
|
||
*button = number;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_click_count:
|
||
* @event: a #GdkEvent
|
||
* @click_count: (out): location to store click count
|
||
*
|
||
* Extracts the click count from an event.
|
||
*
|
||
* Returns: %TRUE if the event delivered a click count
|
||
*/
|
||
gboolean
|
||
gdk_event_get_click_count (const GdkEvent *event,
|
||
guint *click_count)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
guint number = 0;
|
||
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
number = 1;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (click_count)
|
||
*click_count = number;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_keyval:
|
||
* @event: a #GdkEvent
|
||
* @keyval: (out): location to store the keyval
|
||
*
|
||
* Extracts the keyval from an event.
|
||
*
|
||
* Returns: %TRUE if the event delivered a key symbol
|
||
*/
|
||
gboolean
|
||
gdk_event_get_keyval (const GdkEvent *event,
|
||
guint *keyval)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
guint number = 0;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
number = event->key.keyval;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (keyval)
|
||
*keyval = number;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
void
|
||
gdk_event_set_keyval (GdkEvent *event,
|
||
guint keyval)
|
||
{
|
||
if (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE)
|
||
event->key.keyval = keyval;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_keycode:
|
||
* @event: a #GdkEvent
|
||
* @keycode: (out): location to store the keycode
|
||
*
|
||
* Extracts the hardware keycode from an event.
|
||
*
|
||
* Also see gdk_event_get_scancode().
|
||
*
|
||
* Returns: %TRUE if the event delivered a hardware keycode
|
||
*/
|
||
gboolean
|
||
gdk_event_get_keycode (const GdkEvent *event,
|
||
guint16 *keycode)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
guint16 number = 0;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
number = event->key.hardware_keycode;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (keycode)
|
||
*keycode = number;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_key_group:
|
||
* @event: a #GdkEvent
|
||
* @group: (out): return location for the key group
|
||
*
|
||
* Extracts the key group from an event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_key_group (const GdkEvent *event,
|
||
guint *group)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
*group = event->key.group;
|
||
break;
|
||
default:
|
||
*group = 0;
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_key_is_modifier:
|
||
* @event: a #GdkEvent
|
||
* @is_modifier: (out): return location for the value
|
||
*
|
||
* Extracts whether the event is a key event for
|
||
* a modifier key.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_key_is_modifier (const GdkEvent *event,
|
||
gboolean *is_modifier)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
*is_modifier = event->key.is_modifier;
|
||
break;
|
||
default:
|
||
*is_modifier = FALSE;
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_scroll_direction:
|
||
* @event: a #GdkEvent
|
||
* @direction: (out): location to store the scroll direction
|
||
*
|
||
* Extracts the scroll direction from an event.
|
||
*
|
||
* Returns: %TRUE if the event delivered a scroll direction
|
||
*/
|
||
gboolean
|
||
gdk_event_get_scroll_direction (const GdkEvent *event,
|
||
GdkScrollDirection *direction)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
GdkScrollDirection dir = 0;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_SCROLL:
|
||
if (event->scroll.direction == GDK_SCROLL_SMOOTH)
|
||
fetched = FALSE;
|
||
else
|
||
dir = event->scroll.direction;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (direction)
|
||
*direction = dir;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_scroll_deltas:
|
||
* @event: a #GdkEvent
|
||
* @delta_x: (out): return location for X delta
|
||
* @delta_y: (out): return location for Y delta
|
||
*
|
||
* Retrieves the scroll deltas from a #GdkEvent
|
||
*
|
||
* Returns: %TRUE if the event contains smooth scroll information
|
||
**/
|
||
gboolean
|
||
gdk_event_get_scroll_deltas (const GdkEvent *event,
|
||
gdouble *delta_x,
|
||
gdouble *delta_y)
|
||
{
|
||
gboolean fetched = TRUE;
|
||
gdouble dx = 0.0;
|
||
gdouble dy = 0.0;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_SCROLL:
|
||
if (event->scroll.direction == GDK_SCROLL_SMOOTH)
|
||
{
|
||
dx = event->scroll.delta_x;
|
||
dy = event->scroll.delta_y;
|
||
}
|
||
else
|
||
fetched = FALSE;
|
||
break;
|
||
default:
|
||
fetched = FALSE;
|
||
break;
|
||
}
|
||
|
||
if (delta_x)
|
||
*delta_x = dx;
|
||
|
||
if (delta_y)
|
||
*delta_y = dy;
|
||
|
||
return fetched;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_is_scroll_stop_event
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Check whether a scroll event is a stop scroll event. Scroll sequences
|
||
* with smooth scroll information may provide a stop scroll event once the
|
||
* interaction with the device finishes, e.g. by lifting a finger. This
|
||
* stop scroll event is the signal that a widget may trigger kinetic
|
||
* scrolling based on the current velocity.
|
||
*
|
||
* Stop scroll events always have a a delta of 0/0.
|
||
*
|
||
* Returns: %TRUE if the event is a scroll stop event
|
||
*/
|
||
gboolean
|
||
gdk_event_is_scroll_stop_event (const GdkEvent *event)
|
||
{
|
||
return event->scroll.is_stop;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_axis:
|
||
* @event: a #GdkEvent
|
||
* @axis_use: the axis use to look for
|
||
* @value: (out): location to store the value found
|
||
*
|
||
* Extract the axis value for a particular axis use from
|
||
* an event structure.
|
||
*
|
||
* Returns: %TRUE if the specified axis was found, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_axis (const GdkEvent *event,
|
||
GdkAxisUse axis_use,
|
||
gdouble *value)
|
||
{
|
||
gdouble *axes;
|
||
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
if (axis_use == GDK_AXIS_X || axis_use == GDK_AXIS_Y)
|
||
{
|
||
gdouble x, y;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_MOTION_NOTIFY:
|
||
x = event->motion.x;
|
||
y = event->motion.y;
|
||
break;
|
||
case GDK_SCROLL:
|
||
x = event->scroll.x;
|
||
y = event->scroll.y;
|
||
break;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
x = event->button.x;
|
||
y = event->button.y;
|
||
break;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
x = event->touch.x;
|
||
y = event->touch.y;
|
||
break;
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
x = event->crossing.x;
|
||
y = event->crossing.y;
|
||
break;
|
||
default:
|
||
return FALSE;
|
||
}
|
||
|
||
if (axis_use == GDK_AXIS_X && value)
|
||
*value = x;
|
||
if (axis_use == GDK_AXIS_Y && value)
|
||
*value = y;
|
||
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE)
|
||
{
|
||
axes = event->button.axes;
|
||
}
|
||
else if (event->any.type == GDK_TOUCH_BEGIN ||
|
||
event->any.type == GDK_TOUCH_UPDATE ||
|
||
event->any.type == GDK_TOUCH_END ||
|
||
event->any.type == GDK_TOUCH_CANCEL)
|
||
{
|
||
axes = event->touch.axes;
|
||
}
|
||
else if (event->any.type == GDK_MOTION_NOTIFY)
|
||
{
|
||
axes = event->motion.axes;
|
||
}
|
||
else
|
||
return FALSE;
|
||
|
||
return gdk_device_get_axis (event->any.device, axes, axis_use, value);
|
||
}
|
||
|
||
/**
|
||
* gdk_event_set_device:
|
||
* @event: a #GdkEvent
|
||
* @device: a #GdkDevice
|
||
*
|
||
* Sets the device for @event to @device. The event must
|
||
* have been allocated by GTK+, for instance, by
|
||
* gdk_event_copy().
|
||
**/
|
||
void
|
||
gdk_event_set_device (GdkEvent *event,
|
||
GdkDevice *device)
|
||
{
|
||
g_set_object (&event->any.device, device);
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_device:
|
||
* @event: a #GdkEvent.
|
||
*
|
||
* If the event contains a “device” field, this function will return
|
||
* it, else it will return %NULL.
|
||
*
|
||
* Returns: (nullable) (transfer none): a #GdkDevice, or %NULL.
|
||
**/
|
||
GdkDevice *
|
||
gdk_event_get_device (const GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event != NULL, NULL);
|
||
|
||
return event->any.device;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_set_source_device:
|
||
* @event: a #GdkEvent
|
||
* @device: a #GdkDevice
|
||
*
|
||
* Sets the slave device for @event to @device.
|
||
*
|
||
* The event must have been allocated by GTK+,
|
||
* for instance by gdk_event_copy().
|
||
**/
|
||
void
|
||
gdk_event_set_source_device (GdkEvent *event,
|
||
GdkDevice *device)
|
||
{
|
||
g_set_object (&event->any.source_device, device);
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_source_device:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* This function returns the hardware (slave) #GdkDevice that has
|
||
* triggered the event, falling back to the virtual (master) device
|
||
* (as in gdk_event_get_device()) if the event wasn’t caused by
|
||
* interaction with a hardware device. This may happen for example
|
||
* in synthesized crossing events after a #GdkSurface updates its
|
||
* geometry or a grab is acquired/released.
|
||
*
|
||
* If the event does not contain a device field, this function will
|
||
* return %NULL.
|
||
*
|
||
* Returns: (nullable) (transfer none): a #GdkDevice, or %NULL.
|
||
**/
|
||
GdkDevice *
|
||
gdk_event_get_source_device (const GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event != NULL, NULL);
|
||
|
||
if (event->any.source_device)
|
||
return event->any.source_device;
|
||
|
||
/* Fallback to event device */
|
||
return gdk_event_get_device (event);
|
||
}
|
||
|
||
/**
|
||
* gdk_event_triggers_context_menu:
|
||
* @event: a #GdkEvent, currently only button events are meaningful values
|
||
*
|
||
* This function returns whether a #GdkEventButton should trigger a
|
||
* context menu, according to platform conventions. The right mouse
|
||
* button always triggers context menus. Additionally, if
|
||
* gdk_keymap_get_modifier_mask() returns a non-0 mask for
|
||
* %GDK_MODIFIER_INTENT_CONTEXT_MENU, then the left mouse button will
|
||
* also trigger a context menu if this modifier is pressed.
|
||
*
|
||
* This function should always be used instead of simply checking for
|
||
* event->button == %GDK_BUTTON_SECONDARY.
|
||
*
|
||
* Returns: %TRUE if the event should trigger a context menu.
|
||
**/
|
||
gboolean
|
||
gdk_event_triggers_context_menu (const GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
if (event->any.type == GDK_BUTTON_PRESS)
|
||
{
|
||
const GdkEventButton *bevent = (const GdkEventButton *) event;
|
||
GdkDisplay *display;
|
||
GdkModifierType modifier;
|
||
|
||
g_return_val_if_fail (GDK_IS_SURFACE (bevent->any.surface), FALSE);
|
||
|
||
if (bevent->button == GDK_BUTTON_SECONDARY &&
|
||
! (bevent->state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK)))
|
||
return TRUE;
|
||
|
||
display = gdk_surface_get_display (bevent->any.surface);
|
||
|
||
modifier = gdk_keymap_get_modifier_mask (gdk_display_get_keymap (display),
|
||
GDK_MODIFIER_INTENT_CONTEXT_MENU);
|
||
|
||
if (modifier != 0 &&
|
||
bevent->button == GDK_BUTTON_PRIMARY &&
|
||
! (bevent->state & (GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)) &&
|
||
(bevent->state & modifier))
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static gboolean
|
||
gdk_events_get_axis_distances (GdkEvent *event1,
|
||
GdkEvent *event2,
|
||
gdouble *x_distance,
|
||
gdouble *y_distance,
|
||
gdouble *distance)
|
||
{
|
||
gdouble x1, x2, y1, y2;
|
||
gdouble xd, yd;
|
||
|
||
if (!gdk_event_get_coords (event1, &x1, &y1) ||
|
||
!gdk_event_get_coords (event2, &x2, &y2))
|
||
return FALSE;
|
||
|
||
xd = x2 - x1;
|
||
yd = y2 - y1;
|
||
|
||
if (x_distance)
|
||
*x_distance = xd;
|
||
|
||
if (y_distance)
|
||
*y_distance = yd;
|
||
|
||
if (distance)
|
||
*distance = sqrt ((xd * xd) + (yd * yd));
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/**
|
||
* gdk_events_get_distance:
|
||
* @event1: first #GdkEvent
|
||
* @event2: second #GdkEvent
|
||
* @distance: (out): return location for the distance
|
||
*
|
||
* If both events have X/Y information, the distance between both coordinates
|
||
* (as in a straight line going from @event1 to @event2) will be returned.
|
||
*
|
||
* Returns: %TRUE if the distance could be calculated.
|
||
**/
|
||
gboolean
|
||
gdk_events_get_distance (GdkEvent *event1,
|
||
GdkEvent *event2,
|
||
gdouble *distance)
|
||
{
|
||
return gdk_events_get_axis_distances (event1, event2,
|
||
NULL, NULL,
|
||
distance);
|
||
}
|
||
|
||
/**
|
||
* gdk_events_get_angle:
|
||
* @event1: first #GdkEvent
|
||
* @event2: second #GdkEvent
|
||
* @angle: (out): return location for the relative angle between both events
|
||
*
|
||
* If both events contain X/Y information, this function will return %TRUE
|
||
* and return in @angle the relative angle from @event1 to @event2. The rotation
|
||
* direction for positive angles is from the positive X axis towards the positive
|
||
* Y axis.
|
||
*
|
||
* Returns: %TRUE if the angle could be calculated.
|
||
**/
|
||
gboolean
|
||
gdk_events_get_angle (GdkEvent *event1,
|
||
GdkEvent *event2,
|
||
gdouble *angle)
|
||
{
|
||
gdouble x_distance, y_distance, distance;
|
||
|
||
if (!gdk_events_get_axis_distances (event1, event2,
|
||
&x_distance, &y_distance,
|
||
&distance))
|
||
return FALSE;
|
||
|
||
if (angle)
|
||
{
|
||
*angle = atan2 (x_distance, y_distance);
|
||
|
||
/* Invert angle */
|
||
*angle = (2 * G_PI) - *angle;
|
||
|
||
/* Shift it 90° */
|
||
*angle += G_PI / 2;
|
||
|
||
/* And constraint it to 0°-360° */
|
||
*angle = fmod (*angle, 2 * G_PI);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/**
|
||
* gdk_events_get_center:
|
||
* @event1: first #GdkEvent
|
||
* @event2: second #GdkEvent
|
||
* @x: (out): return location for the X coordinate of the center
|
||
* @y: (out): return location for the Y coordinate of the center
|
||
*
|
||
* If both events contain X/Y information, the center of both coordinates
|
||
* will be returned in @x and @y.
|
||
*
|
||
* Returns: %TRUE if the center could be calculated.
|
||
**/
|
||
gboolean
|
||
gdk_events_get_center (GdkEvent *event1,
|
||
GdkEvent *event2,
|
||
gdouble *x,
|
||
gdouble *y)
|
||
{
|
||
gdouble x1, x2, y1, y2;
|
||
|
||
if (!gdk_event_get_coords (event1, &x1, &y1) ||
|
||
!gdk_event_get_coords (event2, &x2, &y2))
|
||
return FALSE;
|
||
|
||
if (x)
|
||
*x = (x2 + x1) / 2;
|
||
|
||
if (y)
|
||
*y = (y2 + y1) / 2;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_set_display:
|
||
* @event: a #GdkEvent
|
||
* @display: a #GdkDisplay
|
||
*
|
||
* Sets the display that an event is associated with.
|
||
*/
|
||
void
|
||
gdk_event_set_display (GdkEvent *event,
|
||
GdkDisplay *display)
|
||
{
|
||
event->any.display = display;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_display:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Retrieves the #GdkDisplay associated to the @event.
|
||
*
|
||
* Returns: (transfer none) (nullable): a #GdkDisplay
|
||
*/
|
||
GdkDisplay *
|
||
gdk_event_get_display (const GdkEvent *event)
|
||
{
|
||
if (event->any.display)
|
||
return event->any.display;
|
||
|
||
if (event->any.surface)
|
||
return gdk_surface_get_display (event->any.surface);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_event_sequence:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* If @event if of type %GDK_TOUCH_BEGIN, %GDK_TOUCH_UPDATE,
|
||
* %GDK_TOUCH_END or %GDK_TOUCH_CANCEL, returns the #GdkEventSequence
|
||
* to which the event belongs. Otherwise, return %NULL.
|
||
*
|
||
* Returns: (transfer none): the event sequence that the event belongs to
|
||
*/
|
||
GdkEventSequence *
|
||
gdk_event_get_event_sequence (const GdkEvent *event)
|
||
{
|
||
if (!event)
|
||
return NULL;
|
||
|
||
if (event->any.type == GDK_TOUCH_BEGIN ||
|
||
event->any.type == GDK_TOUCH_UPDATE ||
|
||
event->any.type == GDK_TOUCH_END ||
|
||
event->any.type == GDK_TOUCH_CANCEL)
|
||
return event->touch.sequence;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_set_show_events:
|
||
* @show_events: %TRUE to output event debugging information.
|
||
*
|
||
* Sets whether a trace of received events is output.
|
||
* Note that GTK+ must be compiled with debugging (that is,
|
||
* configured using the `--enable-debug` option)
|
||
* to use this option.
|
||
**/
|
||
void
|
||
gdk_set_show_events (gboolean show_events)
|
||
{
|
||
if (show_events)
|
||
_gdk_debug_flags |= GDK_DEBUG_EVENTS;
|
||
else
|
||
_gdk_debug_flags &= ~GDK_DEBUG_EVENTS;
|
||
}
|
||
|
||
/**
|
||
* gdk_get_show_events:
|
||
*
|
||
* Gets whether event debugging output is enabled.
|
||
*
|
||
* Returns: %TRUE if event debugging output is enabled.
|
||
**/
|
||
gboolean
|
||
gdk_get_show_events (void)
|
||
{
|
||
return (_gdk_debug_flags & GDK_DEBUG_EVENTS) != 0;
|
||
}
|
||
|
||
static GdkEventSequence *
|
||
gdk_event_sequence_copy (GdkEventSequence *sequence)
|
||
{
|
||
return sequence;
|
||
}
|
||
|
||
static void
|
||
gdk_event_sequence_free (GdkEventSequence *sequence)
|
||
{
|
||
/* Nothing to free here */
|
||
}
|
||
|
||
G_DEFINE_BOXED_TYPE (GdkEventSequence, gdk_event_sequence,
|
||
gdk_event_sequence_copy,
|
||
gdk_event_sequence_free)
|
||
|
||
/**
|
||
* gdk_event_get_event_type:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Retrieves the type of the event.
|
||
*
|
||
* Returns: a #GdkEventType
|
||
*/
|
||
GdkEventType
|
||
gdk_event_get_event_type (const GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event != NULL, GDK_NOTHING);
|
||
|
||
return event->any.type;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_seat:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Returns the #GdkSeat this event was generated for.
|
||
*
|
||
* Returns: (transfer none): The #GdkSeat of this event
|
||
**/
|
||
GdkSeat *
|
||
gdk_event_get_seat (const GdkEvent *event)
|
||
{
|
||
GdkDevice *device;
|
||
|
||
device = gdk_event_get_device (event);
|
||
|
||
return device ? gdk_device_get_seat (device) : NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_device_tool:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* If the event was generated by a device that supports
|
||
* different tools (eg. a tablet), this function will
|
||
* return a #GdkDeviceTool representing the tool that
|
||
* caused the event. Otherwise, %NULL will be returned.
|
||
*
|
||
* Note: the #GdkDeviceTool<!-- -->s will be constant during
|
||
* the application lifetime, if settings must be stored
|
||
* persistently across runs, see gdk_device_tool_get_serial()
|
||
*
|
||
* Returns: (transfer none): The current device tool, or %NULL
|
||
**/
|
||
GdkDeviceTool *
|
||
gdk_event_get_device_tool (const GdkEvent *event)
|
||
{
|
||
if (event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE)
|
||
return event->button.tool;
|
||
else if (event->any.type == GDK_MOTION_NOTIFY)
|
||
return event->motion.tool;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_set_device_tool:
|
||
* @event: a #GdkEvent
|
||
* @tool: (nullable): tool to set on the event, or %NULL
|
||
*
|
||
* Sets the device tool for this event, should be rarely used.
|
||
**/
|
||
void
|
||
gdk_event_set_device_tool (GdkEvent *event,
|
||
GdkDeviceTool *tool)
|
||
{
|
||
if (event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE)
|
||
g_set_object (&event->button.tool, tool);
|
||
else if (event->any.type == GDK_MOTION_NOTIFY)
|
||
g_set_object (&event->motion.tool, tool);
|
||
}
|
||
|
||
void
|
||
gdk_event_set_scancode (GdkEvent *event,
|
||
guint16 scancode)
|
||
{
|
||
if (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE)
|
||
event->key.key_scancode = scancode;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_scancode:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Gets the keyboard low-level scancode of a key event.
|
||
*
|
||
* This is usually hardware_keycode. On Windows this is the high
|
||
* word of WM_KEY{DOWN,UP} lParam which contains the scancode and
|
||
* some extended flags.
|
||
*
|
||
* Returns: The associated keyboard scancode or 0
|
||
**/
|
||
int
|
||
gdk_event_get_scancode (GdkEvent *event)
|
||
{
|
||
if (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE)
|
||
return event->key.key_scancode;
|
||
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
gdk_event_set_target (GdkEvent *event,
|
||
GObject *target)
|
||
{
|
||
g_set_object (&event->any.target, target);
|
||
}
|
||
|
||
GObject *
|
||
gdk_event_get_target (const GdkEvent *event)
|
||
{
|
||
return event->any.target;
|
||
}
|
||
|
||
void
|
||
gdk_event_set_related_target (GdkEvent *event,
|
||
GObject *target)
|
||
{
|
||
if (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY)
|
||
g_set_object (&event->crossing.related_target, target);
|
||
else if (event->any.type == GDK_FOCUS_CHANGE)
|
||
g_set_object (&event->focus_change.related_target, target);
|
||
}
|
||
|
||
GObject *
|
||
gdk_event_get_related_target (const GdkEvent *event)
|
||
{
|
||
if (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY)
|
||
return event->crossing.related_target;
|
||
else if (event->any.type == GDK_FOCUS_CHANGE)
|
||
return event->focus_change.related_target;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_is_sent:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Returns whether the event was sent explicitly.
|
||
*
|
||
* Returns: %TRUE if the event was sent explicitly
|
||
*/
|
||
gboolean
|
||
gdk_event_is_sent (const GdkEvent *event)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
return event->any.send_event;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_drop:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Gets the #GdkDrop from a DND event.
|
||
*
|
||
* Returns: (transfer none) (nullable): the drop
|
||
**/
|
||
GdkDrop *
|
||
gdk_event_get_drop (const GdkEvent *event)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_DRAG_ENTER ||
|
||
event->any.type == GDK_DRAG_LEAVE ||
|
||
event->any.type == GDK_DRAG_MOTION ||
|
||
event->any.type == GDK_DROP_START)
|
||
{
|
||
return event->dnd.drop;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_crossing_mode:
|
||
* @event: a #GdkEvent
|
||
* @mode: (out): return location for the crossing mode
|
||
*
|
||
* Extracts the crossing mode from an event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_crossing_mode (const GdkEvent *event,
|
||
GdkCrossingMode *mode)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY)
|
||
{
|
||
*mode = event->crossing.mode;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_FOCUS_CHANGE)
|
||
{
|
||
*mode = event->focus_change.mode;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_crossing_detail:
|
||
* @event: a #GdkEvent
|
||
* @detail: (out): return location for the crossing detail
|
||
*
|
||
* Extracts the crossing detail from an event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_crossing_detail (const GdkEvent *event,
|
||
GdkNotifyType *detail)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY)
|
||
{
|
||
*detail = event->crossing.detail;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_FOCUS_CHANGE)
|
||
{
|
||
*detail = event->focus_change.detail;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_touchpad_gesture_phase:
|
||
* @event: a #GdkEvent
|
||
* @phase: (out): Return location for the gesture phase
|
||
*
|
||
* Extracts the touchpad gesture phase from a touchpad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_touchpad_gesture_phase (const GdkEvent *event,
|
||
GdkTouchpadGesturePhase *phase)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
{
|
||
*phase = event->touchpad_pinch.phase;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_TOUCHPAD_SWIPE)
|
||
{
|
||
*phase = event->touchpad_swipe.phase;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_touchpad_gesture_n_fingers:
|
||
* @event: a #GdkEvent
|
||
* @n_fingers: (out): return location for the number of fingers
|
||
*
|
||
* Extracts the number of fingers from a touchpad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_touchpad_gesture_n_fingers (const GdkEvent *event,
|
||
guint *n_fingers)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
{
|
||
*n_fingers = event->touchpad_pinch.n_fingers;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_TOUCHPAD_SWIPE)
|
||
{
|
||
*n_fingers = event->touchpad_swipe.n_fingers;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_touchpad_deltas:
|
||
* @event: a #GdkEvent
|
||
* @dx: (out): return location for x
|
||
* @dy: (out): return location for y
|
||
*
|
||
* Extracts delta information from a touchpad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_touchpad_deltas (const GdkEvent *event,
|
||
double *dx,
|
||
double *dy)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
{
|
||
*dx = event->touchpad_pinch.dx;
|
||
*dy = event->touchpad_pinch.dy;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_TOUCHPAD_SWIPE)
|
||
{
|
||
*dx = event->touchpad_swipe.dx;
|
||
*dy = event->touchpad_swipe.dy;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_touchpad_angle_delta:
|
||
* @event: a #GdkEvent
|
||
* @delta: (out): Return location for angle
|
||
*
|
||
* Extracts the angle from a touchpad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_touchpad_angle_delta (const GdkEvent *event,
|
||
double *delta)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
{
|
||
*delta = event->touchpad_pinch.angle_delta;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_touchpad_scale:
|
||
* @event: a #GdkEvent
|
||
* @scale: (out): Return location for scale
|
||
*
|
||
* Extracts the scale from a touchpad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_touchpad_scale (const GdkEvent *event,
|
||
double *scale)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
{
|
||
*scale = event->touchpad_pinch.scale;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_touch_emulating_pointer:
|
||
* @event: a #GdkEvent
|
||
* @emulating: (out): Return location for information
|
||
*
|
||
* Extracts whether a touch event is emulating a pointer event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_touch_emulating_pointer (const GdkEvent *event,
|
||
gboolean *emulating)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_TOUCH_BEGIN ||
|
||
event->any.type == GDK_TOUCH_UPDATE ||
|
||
event->any.type == GDK_TOUCH_END)
|
||
{
|
||
*emulating = event->touch.emulating_pointer;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_grab_surface:
|
||
* @event: a #GdkEvent
|
||
* @surface: (out) (transfer none): Return location for the grab surface
|
||
*
|
||
* Extracts the grab surface from a grab broken event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_grab_surface (const GdkEvent *event,
|
||
GdkSurface **surface)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_GRAB_BROKEN)
|
||
{
|
||
*surface = event->grab_broken.grab_surface;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_focus_in:
|
||
* @event: a #GdkEvent
|
||
* @focus_in: (out): return location for focus direction
|
||
*
|
||
* Extracts whether this is a focus-in or focus-out event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_focus_in (const GdkEvent *event,
|
||
gboolean *focus_in)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_FOCUS_CHANGE)
|
||
{
|
||
*focus_in = event->focus_change.in;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_pad_group_mode:
|
||
* @event: a #GdkEvent
|
||
* @group: (out): return location for the group
|
||
* @mode: (out): return location for the mode
|
||
*
|
||
* Extracts group and mode information from a pad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_pad_group_mode (const GdkEvent *event,
|
||
guint *group,
|
||
guint *mode)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_PAD_GROUP_MODE)
|
||
{
|
||
*group = event->pad_group_mode.group;
|
||
*mode = event->pad_group_mode.mode;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_PAD_BUTTON_PRESS ||
|
||
event->any.type == GDK_PAD_BUTTON_RELEASE)
|
||
{
|
||
*group = event->pad_button.group;
|
||
*mode = event->pad_button.mode;
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_PAD_RING ||
|
||
event->any.type == GDK_PAD_STRIP)
|
||
{
|
||
*group = event->pad_axis.group;
|
||
*mode = event->pad_axis.mode;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_pad_button:
|
||
* @event: a #GdkEvent
|
||
* @button: (out): Return location for the button
|
||
*
|
||
* Extracts information about the pressed button from
|
||
* a pad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_pad_button (const GdkEvent *event,
|
||
guint *button)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_PAD_BUTTON_PRESS ||
|
||
event->any.type == GDK_PAD_BUTTON_RELEASE)
|
||
{
|
||
*button = event->pad_button.button;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_pad_axis_value:
|
||
* @event: a #GdkEvent
|
||
* @index: (out): Return location for the axis index
|
||
* @value: (out): Return location for the axis value
|
||
*
|
||
* Extracts the information from a pad event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_pad_axis_value (const GdkEvent *event,
|
||
guint *index,
|
||
gdouble *value)
|
||
{
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_PAD_RING ||
|
||
event->any.type == GDK_PAD_STRIP)
|
||
{
|
||
*index = event->pad_axis.index;
|
||
*value = event->pad_axis.value;
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_axes:
|
||
* @event: a #GdkEvent
|
||
* @axes: (transfer none) (out) (array length=n_axes): the array of values for all axes
|
||
* @n_axes: (out): the length of array
|
||
*
|
||
* Extracts all axis values from an event.
|
||
*
|
||
* Returns: %TRUE on success, otherwise %FALSE
|
||
**/
|
||
gboolean
|
||
gdk_event_get_axes (GdkEvent *event,
|
||
gdouble **axes,
|
||
guint *n_axes)
|
||
{
|
||
GdkDevice *source_device;
|
||
|
||
if (!event)
|
||
return FALSE;
|
||
|
||
source_device = gdk_event_get_source_device (event);
|
||
|
||
if (!source_device)
|
||
return FALSE;
|
||
|
||
if (event->any.type == GDK_MOTION_NOTIFY)
|
||
{
|
||
*axes = event->motion.axes;
|
||
*n_axes = gdk_device_get_n_axes (source_device);
|
||
return TRUE;
|
||
}
|
||
else if (event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE)
|
||
{
|
||
*axes = event->button.axes;
|
||
*n_axes = gdk_device_get_n_axes (source_device);
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_motion_history:
|
||
* @event: a #GdkEvent of type %GDK_MOTION_NOTIFY
|
||
*
|
||
* Retrieves the history of the @event motion, as a list of time and
|
||
* coordinates.
|
||
*
|
||
* Returns: (transfer container) (element-type GdkTimeCoord) (nullable): a list
|
||
* of time and coordinates
|
||
*/
|
||
GList *
|
||
gdk_event_get_motion_history (const GdkEvent *event)
|
||
{
|
||
if (event->any.type != GDK_MOTION_NOTIFY)
|
||
return NULL;
|
||
return g_list_reverse (g_list_copy (event->motion.history));
|
||
}
|