forked from AuroraMiddleware/gtk
2113 lines
56 KiB
C
2113 lines
56 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
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* 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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*
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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 by toplevel
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* widgets and passed on to the event controllers of 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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* 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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G_DEFINE_BOXED_TYPE (GdkEvent, gdk_event,
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gdk_event_ref,
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gdk_event_unref)
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static gboolean
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check_event_sanity (GdkEvent *event)
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{
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if (event->any.device != NULL &&
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gdk_surface_get_display (event->any.surface) != gdk_device_get_display (event->any.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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if (event->any.source_device != NULL &&
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gdk_surface_get_display (event->any.surface) != gdk_device_get_display (event->any.source_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 source 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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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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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;
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if (event->any.type != GDK_MOTION_NOTIFY)
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break;
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if (pending_motion_surface != NULL &&
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pending_motion_surface != event->any.surface)
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break;
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if (pending_motion_device != NULL &&
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pending_motion_device != event->any.device)
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break;
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if (!last_motion)
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last_motion = event;
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pending_motion_surface = event->any.surface;
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pending_motion_device = event->any.device;
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pending_motions = tmp_list;
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tmp_list = tmp_list->prev;
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}
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while (pending_motions && pending_motions->next != NULL)
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{
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GList *next = pending_motions->next;
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if (last_motion &&
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(last_motion->motion.state &
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(GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK |
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GDK_BUTTON4_MASK | GDK_BUTTON5_MASK)))
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gdk_event_push_history (last_motion, pending_motions->data);
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gdk_event_unref (pending_motions->data);
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g_queue_delete_link (&display->queued_events, pending_motions);
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pending_motions = next;
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}
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if (g_queue_get_length (&display->queued_events) == 1 &&
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g_queue_peek_head_link (&display->queued_events) == pending_motions)
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{
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GdkFrameClock *clock = gdk_surface_get_frame_clock (pending_motion_surface);
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if (clock) /* might be NULL if surface was destroyed */
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gdk_frame_clock_request_phase (clock, GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS);
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}
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}
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void
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_gdk_event_queue_flush (GdkDisplay *display)
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{
|
||
GList *tmp_list;
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||
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for (tmp_list = display->queued_events.head; tmp_list; tmp_list = tmp_list->next)
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{
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GdkEvent *event = tmp_list->data;
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event->any.flags |= GDK_EVENT_FLUSHED;
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}
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}
|
||
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/**
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||
* gdk_event_ref:
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* @event: a #GdkEvent
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||
*
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* Increase the ref count of @event.
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||
*
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||
* Returns: @event
|
||
*/
|
||
GdkEvent *
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||
gdk_event_ref (GdkEvent *event)
|
||
{
|
||
event->any.ref_count++;
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||
return event;
|
||
}
|
||
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||
static void gdk_event_free (GdkEvent *event);
|
||
|
||
/**
|
||
* gdk_event_unref:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Decrease the ref count of @event, and free it
|
||
* if the last reference is dropped.
|
||
*/
|
||
void
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||
gdk_event_unref (GdkEvent *event)
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{
|
||
event->any.ref_count--;
|
||
if (event->any.ref_count == 0)
|
||
gdk_event_free (event);
|
||
}
|
||
|
||
/**
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||
* 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.pointer_emulated;
|
||
}
|
||
|
||
static void
|
||
gdk_event_free (GdkEvent *event)
|
||
{
|
||
GdkDisplay *display;
|
||
|
||
switch ((guint) event->any.type)
|
||
{
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
g_clear_object (&event->crossing.child_surface);
|
||
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;
|
||
|
||
case GDK_PROXIMITY_IN:
|
||
case GDK_PROXIMITY_OUT:
|
||
g_clear_object (&event->proximity.tool);
|
||
break;
|
||
|
||
case GDK_SCROLL:
|
||
g_clear_object (&event->scroll.tool);
|
||
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_free (event);
|
||
}
|
||
|
||
/**
|
||
* 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 (GdkEvent *event,
|
||
GdkAxisUse axis_use,
|
||
double *value)
|
||
{
|
||
double *axes;
|
||
|
||
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_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_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 (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event != NULL, FALSE);
|
||
|
||
if (event->any.type == GDK_BUTTON_PRESS)
|
||
{
|
||
GdkEventButton *bevent = (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_position (event1, &x1, &y1) ||
|
||
!gdk_event_get_position (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_position (event1, &x1, &y1) ||
|
||
!gdk_event_get_position (event2, &x2, &y2))
|
||
return FALSE;
|
||
|
||
if (x)
|
||
*x = (x2 + x1) / 2;
|
||
|
||
if (y)
|
||
*y = (y2 + y1) / 2;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
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_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,
|
||
double **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;
|
||
}
|
||
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;
|
||
*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 (GdkEvent *event)
|
||
{
|
||
if (event->any.type != GDK_MOTION_NOTIFY)
|
||
return NULL;
|
||
return g_list_reverse (g_list_copy (event->motion.history));
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_button_new (GdkEventType type,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
GdkDeviceTool *tool,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
guint button,
|
||
double x,
|
||
double y,
|
||
double *axes)
|
||
{
|
||
GdkEventButton *event;
|
||
|
||
g_return_val_if_fail (type == GDK_BUTTON_PRESS ||
|
||
type == GDK_BUTTON_RELEASE, NULL);
|
||
|
||
event = g_new0 (GdkEventButton, 1);
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->tool = tool ? g_object_ref (tool) : NULL;
|
||
event->axes = NULL;
|
||
event->state = state;
|
||
event->button = button;
|
||
event->x = x;
|
||
event->y = y;
|
||
event->axes = axes;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_motion_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
GdkDeviceTool *tool,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
double x,
|
||
double y,
|
||
double *axes)
|
||
{
|
||
GdkEventMotion *event = g_new0 (GdkEventMotion, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_MOTION_NOTIFY;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->tool = tool ? g_object_ref (tool) : NULL;
|
||
event->state = state;
|
||
event->x = x;
|
||
event->y = y;
|
||
event->axes = axes;
|
||
event->state = state;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_crossing_new (GdkEventType type,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
double x,
|
||
double y,
|
||
GdkCrossingMode mode,
|
||
GdkNotifyType detail)
|
||
{
|
||
GdkEventCrossing *event;
|
||
|
||
g_return_val_if_fail (type == GDK_ENTER_NOTIFY ||
|
||
type == GDK_LEAVE_NOTIFY, NULL);
|
||
|
||
event = g_new0 (GdkEventCrossing, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->state = state;
|
||
event->x = x;
|
||
event->y = y;
|
||
event->mode = mode;
|
||
event->detail = detail;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_proximity_new (GdkEventType type,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
GdkDeviceTool *tool,
|
||
guint32 time)
|
||
{
|
||
GdkEventProximity *event;
|
||
|
||
g_return_val_if_fail (type == GDK_PROXIMITY_IN ||
|
||
type == GDK_PROXIMITY_OUT, NULL);
|
||
|
||
event = g_new0 (GdkEventProximity, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->tool = tool ? g_object_ref (tool) : NULL;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_key_new (GdkEventType type,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
guint keyval,
|
||
guint16 keycode,
|
||
guint16 scancode,
|
||
guint8 group,
|
||
gboolean is_modifier)
|
||
{
|
||
GdkEventKey *event;
|
||
|
||
g_return_val_if_fail (type == GDK_KEY_PRESS ||
|
||
type == GDK_KEY_RELEASE, NULL);
|
||
|
||
event = g_new0 (GdkEventKey, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->state = state;
|
||
event->keyval = keyval;
|
||
event->hardware_keycode = keycode;
|
||
event->key_scancode = scancode;
|
||
event->group = group;
|
||
event->any.key_is_modifier = is_modifier;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_configure_new (GdkSurface *surface,
|
||
int width,
|
||
int height)
|
||
{
|
||
GdkEventConfigure *event = g_new0 (GdkEventConfigure, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_CONFIGURE;
|
||
event->any.time = GDK_CURRENT_TIME;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->width = width;
|
||
event->height = height;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_delete_new (GdkSurface *surface)
|
||
{
|
||
GdkEventAny *event = g_new0 (GdkEventAny, 1);
|
||
|
||
event->ref_count = 1;
|
||
event->type = GDK_DELETE;
|
||
event->time = GDK_CURRENT_TIME;
|
||
event->surface = g_object_ref (surface);
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_focus_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
gboolean focus_in)
|
||
{
|
||
GdkEventFocus *event = g_new0 (GdkEventFocus, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_FOCUS_CHANGE;
|
||
event->any.time = GDK_CURRENT_TIME;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->any.focus_in = focus_in;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_scroll_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
GdkDeviceTool *tool,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
double delta_x,
|
||
double delta_y,
|
||
gboolean is_stop)
|
||
{
|
||
GdkEventScroll *event = g_new0 (GdkEventScroll, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_SCROLL;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->tool = tool ? g_object_ref (tool) : NULL;
|
||
event->state = state;
|
||
event->x = NAN;
|
||
event->y = NAN;
|
||
event->direction = GDK_SCROLL_SMOOTH;
|
||
event->delta_x = delta_x;
|
||
event->delta_y = delta_y;
|
||
event->any.scroll_is_stop = is_stop;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_discrete_scroll_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
GdkDeviceTool *tool,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
GdkScrollDirection direction,
|
||
gboolean emulated)
|
||
{
|
||
GdkEventScroll *event = g_new0 (GdkEventScroll, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_SCROLL;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->tool = tool ? g_object_ref (tool) : NULL;
|
||
event->state = state;
|
||
event->x = NAN;
|
||
event->y = NAN;
|
||
event->direction = direction;
|
||
event->any.pointer_emulated = emulated;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_touch_new (GdkEventType type,
|
||
GdkEventSequence *sequence,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
double x,
|
||
double y,
|
||
double *axes,
|
||
gboolean emulating)
|
||
{
|
||
GdkEventTouch *event;
|
||
|
||
g_return_val_if_fail (type == GDK_TOUCH_BEGIN ||
|
||
type == GDK_TOUCH_END ||
|
||
type == GDK_TOUCH_UPDATE ||
|
||
type == GDK_TOUCH_CANCEL, NULL);
|
||
|
||
event = g_new0 (GdkEventTouch, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->sequence = sequence;
|
||
event->state = state;
|
||
event->x = x;
|
||
event->y = y;
|
||
event->axes = axes;
|
||
event->any.touch_emulating = emulating;
|
||
event->any.pointer_emulated = emulating;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_touchpad_swipe_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
GdkTouchpadGesturePhase phase,
|
||
double x,
|
||
double y,
|
||
int n_fingers,
|
||
double dx,
|
||
double dy)
|
||
{
|
||
GdkEventTouchpadSwipe *event = g_new0 (GdkEventTouchpadSwipe, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_TOUCHPAD_SWIPE;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->state = state;
|
||
event->phase = phase;
|
||
event->x = x;
|
||
event->y = y;
|
||
event->dx = dx;
|
||
event->dy = dy;
|
||
event->n_fingers = n_fingers;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_touchpad_pinch_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
GdkModifierType state,
|
||
GdkTouchpadGesturePhase phase,
|
||
double x,
|
||
double y,
|
||
int n_fingers,
|
||
double dx,
|
||
double dy,
|
||
double scale,
|
||
double angle_delta)
|
||
{
|
||
GdkEventTouchpadPinch *event = g_new0 (GdkEventTouchpadPinch, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_TOUCHPAD_PINCH;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->state = state;
|
||
event->phase = phase;
|
||
event->x = x;
|
||
event->y = y;
|
||
event->dx = dx;
|
||
event->dy = dy;
|
||
event->n_fingers = n_fingers;
|
||
event->scale = scale;
|
||
event->angle_delta = angle_delta;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_pad_ring_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
guint group,
|
||
guint index,
|
||
guint mode,
|
||
double value)
|
||
{
|
||
GdkEventPadAxis *event = g_new0 (GdkEventPadAxis, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_PAD_RING;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->group = group;
|
||
event->index = index;
|
||
event->mode = mode;
|
||
event->value = value;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_pad_strip_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
guint group,
|
||
guint index,
|
||
guint mode,
|
||
double value)
|
||
{
|
||
GdkEventPadAxis *event = g_new0 (GdkEventPadAxis, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_PAD_STRIP;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->group = group;
|
||
event->index = index;
|
||
event->mode = mode;
|
||
event->value = value;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_pad_button_new (GdkEventType type,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
guint group,
|
||
guint button,
|
||
guint mode)
|
||
{
|
||
GdkEventPadButton *event;
|
||
|
||
g_return_val_if_fail (type == GDK_PAD_BUTTON_PRESS ||
|
||
type == GDK_PAD_BUTTON_RELEASE, NULL);
|
||
|
||
event = g_new0 (GdkEventPadButton, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->group = group;
|
||
event->button = button;
|
||
event->mode = mode;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_pad_group_mode_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
guint32 time,
|
||
guint group,
|
||
guint mode)
|
||
{
|
||
GdkEventPadGroupMode *event = g_new0 (GdkEventPadGroupMode, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_PAD_GROUP_MODE;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->group = group;
|
||
event->mode = mode;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_drag_new (GdkEventType type,
|
||
GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDrop *drop,
|
||
guint32 time,
|
||
double x,
|
||
double y)
|
||
{
|
||
GdkEventDND *event;
|
||
|
||
g_return_val_if_fail (type == GDK_DRAG_ENTER ||
|
||
type == GDK_DRAG_MOTION ||
|
||
type == GDK_DRAG_LEAVE ||
|
||
type == GDK_DROP_START, NULL);
|
||
|
||
event = g_new0 (GdkEventDND, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = type;
|
||
event->any.time = time;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->drop = g_object_ref (drop);
|
||
event->x = x;
|
||
event->y = y;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
GdkEvent *
|
||
gdk_event_grab_broken_new (GdkSurface *surface,
|
||
GdkDevice *device,
|
||
GdkDevice *source_device,
|
||
GdkSurface *grab_surface,
|
||
gboolean implicit)
|
||
{
|
||
GdkEventGrabBroken *event = g_new0 (GdkEventGrabBroken, 1);
|
||
|
||
event->any.ref_count = 1;
|
||
event->any.type = GDK_GRAB_BROKEN;
|
||
event->any.time = GDK_CURRENT_TIME;
|
||
event->any.surface = g_object_ref (surface);
|
||
event->any.device = g_object_ref (device);
|
||
event->any.source_device = g_object_ref (source_device);
|
||
event->grab_surface = grab_surface;
|
||
event->implicit = implicit;
|
||
event->keyboard = gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD;
|
||
|
||
return (GdkEvent *)event;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_event_type:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Retrieves the type of the event.
|
||
*
|
||
* Returns: a #GdkEventType
|
||
*/
|
||
GdkEventType
|
||
gdk_event_get_event_type (GdkEvent *event)
|
||
{
|
||
return event->any.type;
|
||
}
|
||
|
||
/**
|
||
* 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 (GdkEvent *event)
|
||
{
|
||
return event->any.surface;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_device:
|
||
* @event: a #GdkEvent.
|
||
*
|
||
* Returns the device of an event.
|
||
*
|
||
* Returns: (nullable) (transfer none): a #GdkDevice, or %NULL.
|
||
**/
|
||
GdkDevice *
|
||
gdk_event_get_device (GdkEvent *event)
|
||
{
|
||
return event->any.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 (GdkEvent *event)
|
||
{
|
||
if (event->any.source_device)
|
||
return event->any.source_device;
|
||
|
||
return event->any.device;
|
||
}
|
||
|
||
/**
|
||
* 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 #GdkDeviceTools 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 (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;
|
||
else if (event->any.type == GDK_PROXIMITY_IN ||
|
||
event->any.type == GDK_PROXIMITY_OUT)
|
||
return event->proximity.tool;
|
||
else if (event->any.type == GDK_SCROLL)
|
||
return event->scroll.tool;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_time:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Returns the time stamp from @event, if there is one; otherwise
|
||
* returns #GDK_CURRENT_TIME.
|
||
*
|
||
* Returns: time stamp field from @event
|
||
**/
|
||
guint32
|
||
gdk_event_get_time (GdkEvent *event)
|
||
{
|
||
return event->any.time;
|
||
}
|
||
|
||
/**
|
||
* 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 (GdkEvent *event)
|
||
{
|
||
if (event->any.surface)
|
||
return gdk_surface_get_display (event->any.surface);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_event_sequence:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* If @event is a touch event, 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 (GdkEvent *event)
|
||
{
|
||
switch ((int) event->any.type)
|
||
{
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
return event->touch.sequence;
|
||
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
return (GdkEventSequence *) event->dnd.drop;
|
||
|
||
default:
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_modifier_state:
|
||
* @event: a #GdkEvent
|
||
*
|
||
* Returns the modifier state field of an event.
|
||
*
|
||
* Returns: the modifier state of @event
|
||
**/
|
||
GdkModifierType
|
||
gdk_event_get_modifier_state (GdkEvent *event)
|
||
{
|
||
#if 0
|
||
g_return_val_if_fail (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY ||
|
||
event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE ||
|
||
event->any.type == GDK_MOTION_NOTIFY ||
|
||
event->any.type == GDK_TOUCH_BEGIN ||
|
||
event->any.type == GDK_TOUCH_UPDATE ||
|
||
event->any.type == GDK_TOUCH_END ||
|
||
event->any.type == GDK_TOUCH_CANCEL ||
|
||
event->any.type == GDK_TOUCHPAD_SWIPE ||
|
||
event->any.type == GDK_TOUCHPAD_PINCH||
|
||
event->any.type == GDK_SCROLL ||
|
||
event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE, 0);
|
||
#endif
|
||
|
||
switch ((int)event->any.type)
|
||
{
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
return event->crossing.state;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
return event->button.state;
|
||
case GDK_MOTION_NOTIFY:
|
||
return event->motion.state;
|
||
case GDK_TOUCH_BEGIN:
|
||
case GDK_TOUCH_UPDATE:
|
||
case GDK_TOUCH_END:
|
||
case GDK_TOUCH_CANCEL:
|
||
return event->touch.state;
|
||
case GDK_TOUCHPAD_SWIPE:
|
||
return event->touchpad_swipe.state;
|
||
case GDK_TOUCHPAD_PINCH:
|
||
return event->touchpad_pinch.state;
|
||
case GDK_SCROLL:
|
||
return event->scroll.state;
|
||
case GDK_KEY_PRESS:
|
||
case GDK_KEY_RELEASE:
|
||
return event->key.state;
|
||
default:
|
||
/* no state field */
|
||
break;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* gdk_event_get_position:
|
||
* @event: a #GdkEvent
|
||
* @x: (out): location to put event surface x coordinate
|
||
* @y: (out): location to put event surface y coordinate
|
||
*
|
||
* Extract the event surface relative x/y coordinates from an event.
|
||
**/
|
||
gboolean
|
||
gdk_event_get_position (GdkEvent *event,
|
||
double *x,
|
||
double *y)
|
||
{
|
||
#if 0
|
||
g_return_if_fail (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY ||
|
||
event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE ||
|
||
event->any.type == GDK_MOTION_NOTIFY ||
|
||
event->any.type == GDK_TOUCH_BEGIN ||
|
||
event->any.type == GDK_TOUCH_UPDATE ||
|
||
event->any.type == GDK_TOUCH_END ||
|
||
event->any.type == GDK_TOUCH_CANCEL ||
|
||
event->any.type == GDK_TOUCHPAD_SWIPE ||
|
||
event->any.type == GDK_TOUCHPAD_PINCH||
|
||
event->any.type == GDK_DRAG_ENTER ||
|
||
event->any.type == GDK_DRAG_LEAVE ||
|
||
event->any.type == GDK_DRAG_MOTION ||
|
||
event->any.type == GDK_DROP_START);
|
||
#endif
|
||
|
||
switch ((int)event->any.type)
|
||
{
|
||
case GDK_ENTER_NOTIFY:
|
||
case GDK_LEAVE_NOTIFY:
|
||
*x = event->crossing.x;
|
||
*y = event->crossing.y;
|
||
break;
|
||
case GDK_BUTTON_PRESS:
|
||
case GDK_BUTTON_RELEASE:
|
||
*x = event->button.x;
|
||
*y = event->button.y;
|
||
break;
|
||
case GDK_MOTION_NOTIFY:
|
||
*x = event->motion.x;
|
||
*y = event->motion.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_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;
|
||
case GDK_DRAG_ENTER:
|
||
case GDK_DRAG_LEAVE:
|
||
case GDK_DRAG_MOTION:
|
||
case GDK_DROP_START:
|
||
*x = event->dnd.x;
|
||
*y = event->dnd.y;
|
||
break;
|
||
default:
|
||
/* no position */
|
||
*x = NAN;
|
||
*y = NAN;
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/**
|
||
* gdk_button_event_get_button:
|
||
* @event: a button event
|
||
*
|
||
* Extract the button number from a button event.
|
||
*
|
||
* Returns: the button of @event
|
||
**/
|
||
guint
|
||
gdk_button_event_get_button (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_BUTTON_PRESS ||
|
||
event->any.type == GDK_BUTTON_RELEASE, 0);
|
||
|
||
return event->button.button;
|
||
}
|
||
|
||
/**
|
||
* gdk_key_event_get_keyval:
|
||
* @event: a key event
|
||
*
|
||
* Extracts the keyval from a key event.
|
||
*
|
||
* Returns: the keyval of @event
|
||
*/
|
||
guint
|
||
gdk_key_event_get_keyval (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE, 0);
|
||
|
||
return event->key.keyval;
|
||
}
|
||
|
||
/**
|
||
* gdk_key_event_get_keycode:
|
||
* @event: a key event
|
||
*
|
||
* Extracts the keycode from a key event.
|
||
*
|
||
* Returns: the keycode of @event
|
||
*/
|
||
guint
|
||
gdk_key_event_get_keycode (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE, 0);
|
||
|
||
return event->key.hardware_keycode;
|
||
}
|
||
|
||
/**
|
||
* gdk_key_event_get_scancode:
|
||
* @event: a key event
|
||
*
|
||
* Extracts the scancode from a key event.
|
||
*
|
||
* Returns: the scancode of @event
|
||
*/
|
||
guint
|
||
gdk_key_event_get_scancode (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE, 0);
|
||
|
||
return event->key.key_scancode;
|
||
}
|
||
|
||
/**
|
||
* gdk_key_event_get_group:
|
||
* @event: a key event
|
||
*
|
||
* Extracts the group from a key event.
|
||
*
|
||
* Returns: the group of @event
|
||
*/
|
||
guint
|
||
gdk_key_event_get_group (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE, 0);
|
||
|
||
return event->key.group;
|
||
}
|
||
|
||
/**
|
||
* gdk_key_event_is_modifier:
|
||
* @event: a key event
|
||
*
|
||
* Extracts whether the key event is for a modifier key.
|
||
*
|
||
* Returns: %TRUE if the @event is for a modifier key
|
||
*/
|
||
gboolean
|
||
gdk_key_event_is_modifier (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_KEY_PRESS ||
|
||
event->any.type == GDK_KEY_RELEASE, FALSE);
|
||
|
||
return event->any.key_is_modifier;
|
||
}
|
||
|
||
/**
|
||
* gdk_configure_event_get_size:
|
||
* @event: a configure event
|
||
* @width: (out): return location for surface width
|
||
* @height: (out): return location for surface height
|
||
*
|
||
* Extracts the surface size from a configure event.
|
||
*/
|
||
void
|
||
gdk_configure_event_get_size (GdkEvent *event,
|
||
int *width,
|
||
int *height)
|
||
{
|
||
g_return_if_fail (event->any.type == GDK_CONFIGURE);
|
||
|
||
*width = event->configure.width;
|
||
*height = event->configure.height;
|
||
}
|
||
|
||
/**
|
||
* gdk_touch_event_get_emulating_pointer:
|
||
* @event: a touch event
|
||
*
|
||
* Extracts whether a touch event is emulating a pointer event.
|
||
*
|
||
* Returns: %TRUE if @event is emulating
|
||
**/
|
||
gboolean
|
||
gdk_touch_event_get_emulating_pointer (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_TOUCH_BEGIN ||
|
||
event->any.type == GDK_TOUCH_UPDATE ||
|
||
event->any.type == GDK_TOUCH_END ||
|
||
event->any.type == GDK_TOUCH_CANCEL, FALSE);
|
||
|
||
return event->any.touch_emulating;
|
||
}
|
||
|
||
/**
|
||
* gdk_crossing_event_get_mode:
|
||
* @event: a crossing event
|
||
*
|
||
* Extracts the crossing mode from a crossing event.
|
||
*
|
||
* Returns: the mode of @event
|
||
*/
|
||
GdkCrossingMode
|
||
gdk_crossing_event_get_mode (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY, 0);
|
||
|
||
return event->crossing.mode;
|
||
}
|
||
|
||
/**
|
||
* gdk_crossing_event_get_detail:
|
||
* @event: a crossing event
|
||
*
|
||
* Extracts the notify detail from a crossing event.
|
||
*
|
||
* Returns: the notify detail of @event
|
||
*/
|
||
GdkNotifyType
|
||
gdk_crossing_event_get_detail (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_ENTER_NOTIFY ||
|
||
event->any.type == GDK_LEAVE_NOTIFY, 0);
|
||
|
||
return event->crossing.detail;
|
||
}
|
||
|
||
/**
|
||
* gdk_focus_event_get_in:
|
||
* @event: a focus change event
|
||
*
|
||
* Extracts whether this event is about focus entering or
|
||
* leaving the surface.
|
||
*
|
||
* Returns: %TRUE of the focus is entering
|
||
*/
|
||
gboolean
|
||
gdk_focus_event_get_in (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_FOCUS_CHANGE, FALSE);
|
||
|
||
return event->any.focus_in;
|
||
}
|
||
|
||
/**
|
||
* gdk_scroll_event_get_direction:
|
||
* @event: a scroll event
|
||
*
|
||
* Extracts the direction of a scroll event.
|
||
*
|
||
* Returns: the scroll direction of @event
|
||
*/
|
||
GdkScrollDirection
|
||
gdk_scroll_event_get_direction (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_SCROLL, 0);
|
||
|
||
return event->scroll.direction;
|
||
}
|
||
|
||
/**
|
||
* gdk_scroll_event_get_deltas:
|
||
* @event: a scroll event
|
||
* @delta_x: (out): return location for x scroll delta
|
||
* @delta_y: (out): return location for y scroll delta
|
||
*
|
||
* Extracts the scroll deltas of a scroll event.
|
||
*
|
||
* The deltas will be zero unless the scroll direction
|
||
* is %GDK_SCROLL_SMOOTH.
|
||
*/
|
||
void
|
||
gdk_scroll_event_get_deltas (GdkEvent *event,
|
||
double *delta_x,
|
||
double *delta_y)
|
||
{
|
||
g_return_if_fail (event->any.type == GDK_SCROLL);
|
||
|
||
*delta_x = event->scroll.delta_x;
|
||
*delta_y = event->scroll.delta_y;
|
||
}
|
||
|
||
/**
|
||
* gdk_scroll_event_is_stop:
|
||
* @event: a scroll event
|
||
*
|
||
* 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 delta of 0/0.
|
||
*
|
||
* Returns: %TRUE if the event is a scroll stop event
|
||
*/
|
||
gboolean
|
||
gdk_scroll_event_is_stop (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_SCROLL, FALSE);
|
||
|
||
return event->any.scroll_is_stop;
|
||
}
|
||
|
||
/**
|
||
* gdk_touchpad_event_get_gesture_phase:
|
||
* @event: a touchpad #GdkEvent
|
||
*
|
||
* Extracts the touchpad gesture phase from a touchpad event.
|
||
*
|
||
* Returns: the gesture phase of @event
|
||
**/
|
||
GdkTouchpadGesturePhase
|
||
gdk_touchpad_event_get_gesture_phase (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_TOUCHPAD_PINCH ||
|
||
event->any.type == GDK_TOUCHPAD_SWIPE, 0);
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
return event->touchpad_pinch.phase;
|
||
else if (event->any.type == GDK_TOUCHPAD_SWIPE)
|
||
return event->touchpad_swipe.phase;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* gdk_touchpad_event_get_n_fingers:
|
||
* @event: a touchpad event
|
||
*
|
||
* Extracts the number of fingers from a touchpad event.
|
||
*
|
||
* Returns: the number of fingers for @event
|
||
**/
|
||
guint
|
||
gdk_touchpad_event_get_n_fingers (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_TOUCHPAD_PINCH ||
|
||
event->any.type == GDK_TOUCHPAD_SWIPE, 0);
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
return event->touchpad_pinch.n_fingers;
|
||
else if (event->any.type == GDK_TOUCHPAD_SWIPE)
|
||
return event->touchpad_swipe.n_fingers;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* gdk_touchpad_event_get_deltas:
|
||
* @event: a touchpad event
|
||
* @dx: (out): return location for x
|
||
* @dy: (out): return location for y
|
||
*
|
||
* Extracts delta information from a touchpad event.
|
||
**/
|
||
void
|
||
gdk_touchpad_event_get_deltas (GdkEvent *event,
|
||
double *dx,
|
||
double *dy)
|
||
{
|
||
g_return_if_fail (event->any.type == GDK_TOUCHPAD_PINCH ||
|
||
event->any.type == GDK_TOUCHPAD_SWIPE);
|
||
|
||
if (event->any.type == GDK_TOUCHPAD_PINCH)
|
||
{
|
||
*dx = event->touchpad_pinch.dx;
|
||
*dy = event->touchpad_pinch.dy;
|
||
}
|
||
else if (event->any.type == GDK_TOUCHPAD_SWIPE)
|
||
{
|
||
*dx = event->touchpad_swipe.dx;
|
||
*dy = event->touchpad_swipe.dy;
|
||
}
|
||
else
|
||
{
|
||
*dx = NAN;
|
||
*dy = NAN;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gdk_touchpad_pinch_event_get_angle_delta:
|
||
* @event: a touchpad pinch event
|
||
*
|
||
* Extracts the angle delta from a touchpad pinch event.
|
||
*
|
||
* Returns: the angle delta of @event
|
||
*/
|
||
double
|
||
gdk_touchpad_pinch_event_get_angle_delta (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_TOUCHPAD_PINCH, 0);
|
||
|
||
return event->touchpad_pinch.angle_delta;
|
||
}
|
||
|
||
/**
|
||
* gdk_touchpad_pinch_event_get_scale:
|
||
* @event: a touchpad pinch event
|
||
*
|
||
* Extracts the scale from a touchpad pinch event.
|
||
*
|
||
* Returns: the scale of @event
|
||
**/
|
||
double
|
||
gdk_touchpad_pinch_event_get_scale (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_TOUCHPAD_PINCH, 0);
|
||
|
||
return event->touchpad_pinch.scale;
|
||
}
|
||
|
||
/**
|
||
* gdk_pad_button_event_get_button:
|
||
* @event: a pad button event
|
||
*
|
||
* Extracts information about the pressed button from
|
||
* a pad event.
|
||
*
|
||
* Returns: the button of @event
|
||
**/
|
||
guint
|
||
gdk_pad_button_event_get_button (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_PAD_BUTTON_PRESS ||
|
||
event->any.type == GDK_PAD_BUTTON_RELEASE, 0);
|
||
|
||
return event->pad_button.button;
|
||
}
|
||
|
||
/**
|
||
* gdk_pad_axis_event_get_value:
|
||
* @event: a pad strip or ring event
|
||
* @index: (out): Return location for the axis index
|
||
* @value: (out): Return location for the axis value
|
||
*
|
||
* Extracts the information from a pad strip or ring event.
|
||
**/
|
||
void
|
||
gdk_pad_axis_event_get_value (GdkEvent *event,
|
||
guint *index,
|
||
gdouble *value)
|
||
{
|
||
g_return_if_fail (event->any.type == GDK_PAD_RING ||
|
||
event->any.type == GDK_PAD_STRIP);
|
||
|
||
*index = event->pad_axis.index;
|
||
*value = event->pad_axis.value;
|
||
}
|
||
|
||
/**
|
||
* gdk_pad_event_get_group_mode:
|
||
* @event: a pad event
|
||
* @group: (out): return location for the group
|
||
* @mode: (out): return location for the mode
|
||
*
|
||
* Extracts group and mode information from a pad event.
|
||
**/
|
||
void
|
||
gdk_pad_event_get_group_mode (GdkEvent *event,
|
||
guint *group,
|
||
guint *mode)
|
||
{
|
||
g_return_if_fail (event->any.type == GDK_PAD_GROUP_MODE ||
|
||
event->any.type == GDK_PAD_BUTTON_PRESS ||
|
||
event->any.type == GDK_PAD_BUTTON_RELEASE ||
|
||
event->any.type == GDK_PAD_RING ||
|
||
event->any.type == GDK_PAD_STRIP);
|
||
|
||
switch ((guint)event->any.type)
|
||
{
|
||
case GDK_PAD_GROUP_MODE:
|
||
*group = event->pad_group_mode.group;
|
||
*mode = event->pad_group_mode.mode;
|
||
break;
|
||
case GDK_PAD_BUTTON_PRESS:
|
||
case GDK_PAD_BUTTON_RELEASE:
|
||
*group = event->pad_button.group;
|
||
*mode = event->pad_button.mode;
|
||
break;
|
||
case GDK_PAD_RING:
|
||
case GDK_PAD_STRIP:
|
||
*group = event->pad_axis.group;
|
||
*mode = event->pad_axis.mode;
|
||
break;
|
||
default:
|
||
g_assert_not_reached ();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gdk_drag_event_get_drop:
|
||
* @event: a DND event
|
||
*
|
||
* Gets the #GdkDrop from a DND event.
|
||
*
|
||
* Returns: (transfer none) (nullable): the drop
|
||
**/
|
||
GdkDrop *
|
||
gdk_drag_event_get_drop (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_DRAG_ENTER ||
|
||
event->any.type == GDK_DRAG_LEAVE ||
|
||
event->any.type == GDK_DRAG_MOTION ||
|
||
event->any.type == GDK_DROP_START, NULL);
|
||
|
||
return event->dnd.drop;
|
||
}
|
||
|
||
/**
|
||
* gdk_grab_broken_event_get_grab_surface:
|
||
* @event: a grab broken event
|
||
*
|
||
* Extracts the grab surface from a grab broken event.
|
||
*
|
||
* Returns: (transfer none): the grab surface of @event
|
||
**/
|
||
GdkSurface *
|
||
gdk_grab_broken_event_get_grab_surface (GdkEvent *event)
|
||
{
|
||
g_return_val_if_fail (event->any.type == GDK_GRAB_BROKEN, NULL);
|
||
|
||
return event->grab_broken.grab_surface;
|
||
}
|