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/*
* Copyright (C) 2020 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/x11/meta-cursor-tracker-x11.h"
#include "backends/x11/cm/meta-cursor-sprite-xfixes.h"
#include "clutter/clutter-private.h"
#include "meta/meta-x11-errors.h"
#include "x11/meta-x11-display-private.h"
#define UPDATE_POSITION_TIMEOUT_MS (ms (100))
struct _MetaCursorTrackerX11
{
MetaCursorTracker parent;
gboolean is_force_track_position_enabled;
guint update_position_timeout_id;
MetaCursorSpriteXfixes *xfixes_cursor;
};
G_DEFINE_TYPE (MetaCursorTrackerX11, meta_cursor_tracker_x11,
META_TYPE_CURSOR_TRACKER)
static gboolean
ensure_xfixes_cursor (MetaCursorTrackerX11 *tracker_x11);
gboolean
meta_cursor_tracker_x11_handle_xevent (MetaCursorTrackerX11 *tracker_x11,
XEvent *xevent)
{
MetaX11Display *x11_display = meta_get_display ()->x11_display;
XFixesCursorNotifyEvent *notify_event;
if (xevent->xany.type != x11_display->xfixes_event_base + XFixesCursorNotify)
return FALSE;
notify_event = (XFixesCursorNotifyEvent *)xevent;
if (notify_event->subtype != XFixesDisplayCursorNotify)
return FALSE;
g_clear_object (&tracker_x11->xfixes_cursor);
meta_cursor_tracker_notify_cursor_changed (META_CURSOR_TRACKER (tracker_x11));
return TRUE;
}
static void
update_position (MetaCursorTrackerX11 *tracker_x11)
{
MetaCursorTracker *tracker = META_CURSOR_TRACKER (tracker_x11);
meta_cursor_tracker_invalidate_position (tracker);
}
static gboolean
ensure_xfixes_cursor (MetaCursorTrackerX11 *tracker_x11)
{
MetaDisplay *display = meta_get_display ();
g_autoptr (GError) error = NULL;
if (tracker_x11->xfixes_cursor)
return FALSE;
tracker_x11->xfixes_cursor = meta_cursor_sprite_xfixes_new (display, &error);
if (!tracker_x11->xfixes_cursor)
g_warning ("Failed to create XFIXES cursor: %s", error->message);
return TRUE;
}
static gboolean
update_cursor_timeout (gpointer user_data)
{
MetaCursorTrackerX11 *tracker_x11 = user_data;
MetaCursorTracker *tracker = META_CURSOR_TRACKER (tracker_x11);
MetaBackend *backend = meta_cursor_tracker_get_backend (tracker);
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (backend);
gboolean cursor_changed;
MetaCursorSprite *cursor_sprite;
update_position (tracker_x11);
cursor_changed = ensure_xfixes_cursor (tracker_x11);
if (tracker_x11->xfixes_cursor)
cursor_sprite = META_CURSOR_SPRITE (tracker_x11->xfixes_cursor);
else
cursor_sprite = NULL;
meta_cursor_renderer_update_stage_overlay (cursor_renderer, cursor_sprite);
if (cursor_changed)
meta_cursor_tracker_notify_cursor_changed (tracker);
return G_SOURCE_CONTINUE;
}
static void
meta_cursor_tracker_x11_set_force_track_position (MetaCursorTracker *tracker,
gboolean is_enabled)
{
MetaCursorTrackerX11 *tracker_x11 = META_CURSOR_TRACKER_X11 (tracker);
if (tracker_x11->is_force_track_position_enabled == is_enabled)
return;
tracker_x11->is_force_track_position_enabled = is_enabled;
if (is_enabled)
{
tracker_x11->update_position_timeout_id =
g_timeout_add (UPDATE_POSITION_TIMEOUT_MS,
update_cursor_timeout,
tracker_x11);
update_position (tracker_x11);
}
else
{
g_clear_handle_id (&tracker_x11->update_position_timeout_id,
g_source_remove);
}
}
static MetaCursorSprite *
meta_cursor_tracker_x11_get_sprite (MetaCursorTracker *tracker)
{
MetaCursorTrackerX11 *tracker_x11 = META_CURSOR_TRACKER_X11 (tracker);
ensure_xfixes_cursor (META_CURSOR_TRACKER_X11 (tracker));
if (tracker_x11->xfixes_cursor)
return META_CURSOR_SPRITE (tracker_x11->xfixes_cursor);
else
return NULL;
}
static void
meta_cursor_tracker_x11_dispose (GObject *object)
{
MetaCursorTrackerX11 *tracker_x11 = META_CURSOR_TRACKER_X11 (object);
g_clear_handle_id (&tracker_x11->update_position_timeout_id, g_source_remove);
g_clear_object (&tracker_x11->xfixes_cursor);
G_OBJECT_CLASS (meta_cursor_tracker_x11_parent_class)->dispose (object);
}
static void
meta_cursor_tracker_x11_init (MetaCursorTrackerX11 *tracker_x11)
{
}
static void
meta_cursor_tracker_x11_class_init (MetaCursorTrackerX11Class *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MetaCursorTrackerClass *tracker_class = META_CURSOR_TRACKER_CLASS (klass);
object_class->dispose = meta_cursor_tracker_x11_dispose;
tracker_class->set_force_track_position =
meta_cursor_tracker_x11_set_force_track_position;
tracker_class->get_sprite =
meta_cursor_tracker_x11_get_sprite;
}
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