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mutter/clutter/gdk/clutter-stage-gdk.c
Emmanuele Bassi c624230a8a gdk: Enable swap throttling on full screen windows 
Since commit 6183eb3632 we disabled swap
throttling in favour of being driven by the GDK frame clock (and thus by
the compositor).

Compositors may decide to unredirect full screen windows to avoid the
performance penalty of the additional copy, especially on X11, which
means that a Clutter application marked as full screen is not going to
be driven by the compositor, and it's not going to be throttled by the
underlying GL machinery. This has a performance impact on constrained
platforms.

For this reason, we should re-enable swap throttling when the window is
full screen.

As the change was introduced especially because of Wayland, we should
check that we're not running as clients under a Wayland compositor; if
we do, we always keep swap throttling disabled, as the compositor will
always manage our output, even when full screen.
2016-01-25 18:48:49 +00:00

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/* Clutter.
* An OpenGL based 'interactive canvas' library.
* Authored By Matthew Allum <mallum@openedhand.com>
* Copyright (C) 2006-2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#include "config.h"
#include <math.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <cogl/cogl.h>
#ifdef COGL_HAS_XLIB_SUPPORT
#include <cogl/cogl-xlib.h>
#endif
#define GDK_DISABLE_DEPRECATION_WARNINGS
#include <gdk/gdk.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#endif
#ifdef GDK_WINDOWING_WAYLAND
#include <gdk/gdkwayland.h>
#endif
#ifdef GDK_WINDOWING_WIN32
#include <gdk/gdkwin32.h>
#endif
#include "clutter-backend-gdk.h"
#include "clutter-stage-gdk.h"
#include "clutter-gdk.h"
#include "clutter-actor-private.h"
#include "clutter-debug.h"
#include "clutter-device-manager-private.h"
#include "clutter-enum-types.h"
#include "clutter-event-translator.h"
#include "clutter-event-private.h"
#include "clutter-feature.h"
#include "clutter-main.h"
#include "clutter-paint-volume-private.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
static ClutterStageWindowIface *clutter_stage_window_parent_iface = NULL;
#define clutter_stage_gdk_get_type _clutter_stage_gdk_get_type
G_DEFINE_TYPE_WITH_CODE (ClutterStageGdk,
clutter_stage_gdk,
CLUTTER_TYPE_STAGE_COGL,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
clutter_stage_window_iface_init));
#if defined(GDK_WINDOWING_X11) && defined(COGL_HAS_XLIB_SUPPORT)
static void
clutter_stage_gdk_update_foreign_event_mask (CoglOnscreen *onscreen,
guint32 event_mask,
void *user_data)
{
ClutterStageGdk *stage_gdk = user_data;
/* we assume that a GDK event mask is bitwise compatible with X11
event masks */
gdk_window_set_events (stage_gdk->window, event_mask | CLUTTER_STAGE_GDK_EVENT_MASK);
}
#endif
static void
clutter_stage_gdk_set_gdk_geometry (ClutterStageGdk *stage)
{
GdkGeometry geometry;
ClutterStage *wrapper = CLUTTER_STAGE_COGL (stage)->wrapper;
gboolean resize = clutter_stage_get_user_resizable (wrapper);
if (!resize)
{
geometry.min_width = geometry.max_width = gdk_window_get_width (stage->window);
geometry.min_height = geometry.max_height = gdk_window_get_height (stage->window);
gdk_window_set_geometry_hints (stage->window,
&geometry,
GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE);
}
else
{
clutter_stage_get_minimum_size (wrapper,
(guint *)&geometry.min_width,
(guint *)&geometry.min_height);
gdk_window_set_geometry_hints (stage->window,
&geometry,
GDK_HINT_MIN_SIZE);
}
}
static void
clutter_stage_gdk_get_geometry (ClutterStageWindow *stage_window,
cairo_rectangle_int_t *geometry)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
geometry->x = geometry->y = 0;
if (stage_gdk->window != NULL)
{
geometry->width = gdk_window_get_width (stage_gdk->window);
geometry->height = gdk_window_get_height (stage_gdk->window);
}
else
{
geometry->width = 800;
geometry->height = 600;
}
}
static void
clutter_stage_gdk_resize (ClutterStageWindow *stage_window,
gint width,
gint height)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
if (width == 0 || height == 0)
{
/* Should not happen, if this turns up we need to debug it and
* determine the cleanest way to fix.
*/
g_warning ("GDK stage not allowed to have 0 width or height");
width = 1;
height = 1;
}
CLUTTER_NOTE (BACKEND, "New size received: (%d, %d)", width, height);
/* No need to resize foreign windows, it should be handled by the
* embedding framework, but on wayland we might need to resize our
* own subsurface.
*/
if (!stage_gdk->foreign_window)
gdk_window_resize (stage_gdk->window, width, height);
#if defined(GDK_WINDOWING_WAYLAND) && defined(COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
else if (GDK_IS_WAYLAND_WINDOW (stage_gdk->window))
{
int scale = gdk_window_get_scale_factor (stage_gdk->window);
cogl_wayland_onscreen_resize (CLUTTER_STAGE_COGL (stage_gdk)->onscreen,
width * scale, height * scale, 0, 0);
}
#endif
}
static void
clutter_stage_gdk_unrealize (ClutterStageWindow *stage_window)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
if (stage_gdk->window != NULL)
{
g_object_set_data (G_OBJECT (stage_gdk->window),
"clutter-stage-window", NULL);
if (stage_gdk->foreign_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
g_object_unref (stage_gdk->window);
/* Clutter still uses part of the deprecated stateful API of
* Cogl (in particulart cogl_set_framebuffer). It means Cogl
* can keep an internal reference to the onscreen object we
* rendered to. In the case of foreign window, we want to
* avoid this, as we don't know what's going to happen to
* that window.
*
* The following call sets the current Cogl framebuffer to a
* dummy 1x1 one if we're unrealizing the current one, so
* Cogl doesn't keep any reference to the foreign window.
*/
if (cogl_get_draw_framebuffer () == COGL_FRAMEBUFFER (stage_cogl->onscreen))
_clutter_backend_reset_cogl_framebuffer (stage_cogl->backend);
}
else
gdk_window_destroy (stage_gdk->window);
stage_gdk->window = NULL;
}
clutter_stage_window_parent_iface->unrealize (stage_window);
#if defined(GDK_WINDOWING_WAYLAND)
g_clear_pointer (&stage_gdk->subsurface, wl_subsurface_destroy);
g_clear_pointer (&stage_gdk->clutter_surface, wl_surface_destroy);
#endif
}
#if defined(GDK_WINDOWING_WAYLAND)
static struct wl_surface *
clutter_stage_gdk_wayland_surface (ClutterStageGdk *stage_gdk)
{
GdkDisplay *display;
struct wl_compositor *compositor;
struct wl_surface *parent_surface;
struct wl_region *input_region;
gint x, y;
if (!stage_gdk->foreign_window ||
gdk_window_get_window_type (stage_gdk->window) != GDK_WINDOW_CHILD)
return gdk_wayland_window_get_wl_surface (stage_gdk->window);
if (stage_gdk->clutter_surface)
return stage_gdk->clutter_surface;
/* On Wayland if we render to a foreign window, we setup our own
* surface to not render in the same buffers as the embedding
* framework.
*/
display = gdk_display_get_default ();
compositor = gdk_wayland_display_get_wl_compositor (display);
stage_gdk->clutter_surface = wl_compositor_create_surface (compositor);
/* Since we run inside GDK, we can let the embedding framework
* dispatch the events to Clutter. For that to happen we need to
* disable input on our surface. */
input_region = wl_compositor_create_region (compositor);
wl_region_add (input_region, 0, 0, 0, 0);
wl_surface_set_input_region (stage_gdk->clutter_surface, input_region);
wl_region_destroy (input_region);
wl_surface_set_buffer_scale (stage_gdk->clutter_surface,
gdk_window_get_scale_factor (stage_gdk->window));
parent_surface = gdk_wayland_window_get_wl_surface (gdk_window_get_toplevel (stage_gdk->window));
stage_gdk->subsurface = wl_subcompositor_get_subsurface (stage_gdk->subcompositor,
stage_gdk->clutter_surface,
parent_surface);
gdk_window_get_origin (stage_gdk->window, &x, &y);
wl_subsurface_set_position (stage_gdk->subsurface, x, y);
wl_subsurface_set_desync (stage_gdk->subsurface);
return stage_gdk->clutter_surface;
}
#endif
void
_clutter_stage_gdk_notify_configure (ClutterStageGdk *stage_gdk,
gint x,
gint y,
gint width,
gint height)
{
if (x < 0 || y < 0 || width < 1 || height < 1)
return;
if (stage_gdk->foreign_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_gdk);
int scale = gdk_window_get_scale_factor (stage_gdk->window);
#if defined(GDK_WINDOWING_WAYLAND) && defined(COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
if (GDK_IS_WAYLAND_WINDOW (stage_gdk->window) &&
gdk_window_get_window_type (stage_gdk->window) == GDK_WINDOW_CHILD &&
stage_gdk->subsurface)
{
gint rx, ry;
gdk_window_get_origin (stage_gdk->window, &rx, &ry);
wl_subsurface_set_position (stage_gdk->subsurface, rx, ry);
wl_surface_set_buffer_scale (stage_gdk->clutter_surface, scale);
cogl_wayland_onscreen_resize (stage_cogl->onscreen,
width * scale, height * scale, 0, 0);
}
else
#endif
#if defined(GDK_WINDOWING_X11) && defined(COGL_HAS_XLIB_SUPPORT)
if (GDK_IS_X11_WINDOW (stage_gdk->window))
{
ClutterBackend *backend = CLUTTER_BACKEND (stage_cogl->backend);
XConfigureEvent xevent = { ConfigureNotify };
xevent.window = GDK_WINDOW_XID (stage_gdk->window);
xevent.width = width * scale;
xevent.height = height * scale;
/* Ensure cogl knows about the new size immediately, as we will
* draw before we get the ConfigureNotify response. */
cogl_xlib_renderer_handle_event (backend->cogl_renderer, (XEvent *)&xevent);
}
else
#endif
{
/* Currently we only support X11 and Wayland. */
g_assert_not_reached();
}
}
}
static gboolean
clutter_stage_gdk_realize (ClutterStageWindow *stage_window)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
ClutterBackend *backend = CLUTTER_BACKEND (stage_cogl->backend);
ClutterBackendGdk *backend_gdk = CLUTTER_BACKEND_GDK (backend);
GdkWindowAttr attributes;
gboolean cursor_visible;
gboolean use_alpha;
gfloat width, height;
int scale;
if (backend->cogl_context == NULL)
{
g_warning ("Missing Cogl context: was Clutter correctly initialized?");
return FALSE;
}
if (!stage_gdk->foreign_window)
{
if (stage_gdk->window != NULL)
{
/* complete realizing the stage */
cairo_rectangle_int_t geometry;
clutter_stage_gdk_get_geometry (stage_window, &geometry);
clutter_actor_set_size (CLUTTER_ACTOR (stage_cogl->wrapper),
geometry.width,
geometry.height);
gdk_window_ensure_native (stage_gdk->window);
gdk_window_set_events (stage_gdk->window, CLUTTER_STAGE_GDK_EVENT_MASK);
return TRUE;
}
else
{
attributes.title = NULL;
g_object_get (stage_cogl->wrapper,
"cursor-visible", &cursor_visible,
"title", &attributes.title,
"width", &width,
"height", &height,
"use-alpha", &use_alpha,
NULL);
attributes.width = width;
attributes.height = height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.window_type = GDK_WINDOW_TOPLEVEL;
attributes.event_mask = CLUTTER_STAGE_GDK_EVENT_MASK;
attributes.cursor = NULL;
if (!cursor_visible)
{
if (stage_gdk->blank_cursor == NULL)
stage_gdk->blank_cursor = gdk_cursor_new_for_display (backend_gdk->display, GDK_BLANK_CURSOR);
attributes.cursor = stage_gdk->blank_cursor;
}
/* If the ClutterStage:use-alpha is set, but GDK does not have an
* RGBA visual, then we unset the property on the Stage
*/
if (use_alpha)
{
if (gdk_screen_get_rgba_visual (backend_gdk->screen) == NULL)
{
clutter_stage_set_use_alpha (stage_cogl->wrapper, FALSE);
use_alpha = FALSE;
}
}
#if defined(GDK_WINDOWING_X11) && defined(COGL_HAS_XLIB_SUPPORT)
if (GDK_IS_X11_DISPLAY (backend_gdk->display))
{
XVisualInfo *xvisinfo = cogl_clutter_winsys_xlib_get_visual_info ();
if (xvisinfo != NULL)
{
attributes.visual = gdk_x11_screen_lookup_visual (backend_gdk->screen,
xvisinfo->visualid);
}
}
else
#endif
{
attributes.visual = use_alpha
? gdk_screen_get_rgba_visual (backend_gdk->screen)
: gdk_screen_get_system_visual (backend_gdk->screen);
}
if (attributes.visual == NULL)
{
/* This could still be an RGBA visual, although normally it's not */
attributes.visual = gdk_screen_get_system_visual (backend_gdk->screen);
}
stage_gdk->foreign_window = FALSE;
stage_gdk->window = gdk_window_new (NULL, &attributes,
GDK_WA_TITLE | GDK_WA_CURSOR | GDK_WA_VISUAL);
g_free (attributes.title);
}
clutter_stage_gdk_set_gdk_geometry (stage_gdk);
gdk_window_ensure_native (stage_gdk->window);
}
else
{
width = gdk_window_get_width (stage_gdk->window);
height = gdk_window_get_height (stage_gdk->window);
}
g_object_set_data (G_OBJECT (stage_gdk->window), "clutter-stage-window", stage_gdk);
scale = gdk_window_get_scale_factor (stage_gdk->window);
stage_cogl->onscreen = cogl_onscreen_new (backend->cogl_context,
width * scale, height * scale);
#if defined(GDK_WINDOWING_X11) && defined(COGL_HAS_XLIB_SUPPORT)
if (GDK_IS_X11_WINDOW (stage_gdk->window))
{
cogl_x11_onscreen_set_foreign_window_xid (stage_cogl->onscreen,
GDK_WINDOW_XID (stage_gdk->window),
clutter_stage_gdk_update_foreign_event_mask,
stage_gdk);
}
else
#endif
#if defined(GDK_WINDOWING_WAYLAND) && defined(COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
if (GDK_IS_WAYLAND_WINDOW (stage_gdk->window))
{
cogl_wayland_onscreen_set_foreign_surface (stage_cogl->onscreen,
clutter_stage_gdk_wayland_surface (stage_gdk));
}
else
#endif
#if defined(GDK_WINDOWING_WIN32) && defined(COGL_HAS_WIN32_SUPPORT)
if (GDK_IS_WIN32_WINDOW (stage_gdk->window))
{
cogl_win32_onscreen_set_foreign_window (stage_cogl->onscreen,
gdk_win32_window_get_handle (stage_gdk->window));
}
else
#endif
{
g_warning ("Cannot find an appropriate CoglWinsys for a "
"GdkWindow of type %s", G_OBJECT_TYPE_NAME (stage_gdk->window));
cogl_object_unref (stage_cogl->onscreen);
stage_cogl->onscreen = NULL;
if (!stage_gdk->foreign_window)
gdk_window_destroy (stage_gdk->window);
stage_gdk->window = NULL;
return FALSE;
}
return clutter_stage_window_parent_iface->realize (stage_window);
}
static void
clutter_stage_gdk_set_fullscreen (ClutterStageWindow *stage_window,
gboolean is_fullscreen)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
ClutterStage *stage = CLUTTER_STAGE_COGL (stage_window)->wrapper;
gboolean swap_throttle;
if (stage == NULL || CLUTTER_ACTOR_IN_DESTRUCTION (stage))
return;
if (stage_gdk->window == NULL || stage_gdk->foreign_window)
return;
CLUTTER_NOTE (BACKEND, "%ssetting fullscreen", is_fullscreen ? "" : "un");
if (is_fullscreen)
gdk_window_fullscreen (stage_gdk->window);
else
gdk_window_unfullscreen (stage_gdk->window);
/* Full-screen stages are usually unredirected to improve performance
* by avoiding a copy; when that happens, we need to turn back swap
* throttling because we won't be managed by the compositor any more,
*/
swap_throttle = is_fullscreen;
#ifdef GDK_WINDOWING_WAYLAND
{
/* Except on Wayland, where there's a deadlock due to both Cogl
* and GDK attempting to consume the throttling event; see bug
* https://bugzilla.gnome.org/show_bug.cgi?id=754671#c1
*/
GdkDisplay *display = clutter_gdk_get_default_display ();
if (GDK_IS_WAYLAND_DISPLAY (display))
swap_throttle = FALSE;
}
#endif
cogl_onscreen_set_swap_throttled (stage_cogl->onscreen, swap_throttle);
}
static void
clutter_stage_gdk_set_cursor_visible (ClutterStageWindow *stage_window,
gboolean cursor_visible)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
if (stage_gdk->window == NULL)
return;
if (cursor_visible)
{
gdk_window_set_cursor (stage_gdk->window, NULL);
}
else
{
if (stage_gdk->blank_cursor == NULL)
{
GdkDisplay *display = clutter_gdk_get_default_display ();
stage_gdk->blank_cursor = gdk_cursor_new_for_display (display, GDK_BLANK_CURSOR);
}
gdk_window_set_cursor (stage_gdk->window, stage_gdk->blank_cursor);
}
}
static void
clutter_stage_gdk_set_title (ClutterStageWindow *stage_window,
const gchar *title)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
if (stage_gdk->window == NULL || stage_gdk->foreign_window)
return;
gdk_window_set_title (stage_gdk->window, title);
}
static void
clutter_stage_gdk_set_user_resizable (ClutterStageWindow *stage_window,
gboolean is_resizable)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
GdkWMFunction function;
if (stage_gdk->window == NULL || stage_gdk->foreign_window)
return;
function = GDK_FUNC_MOVE | GDK_FUNC_MINIMIZE | GDK_FUNC_CLOSE;
if (is_resizable)
function |= GDK_FUNC_RESIZE | GDK_FUNC_MAXIMIZE;
gdk_window_set_functions (stage_gdk->window, function);
clutter_stage_gdk_set_gdk_geometry (stage_gdk);
}
static void
clutter_stage_gdk_set_accept_focus (ClutterStageWindow *stage_window,
gboolean accept_focus)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
if (stage_gdk->window == NULL || stage_gdk->foreign_window)
return;
gdk_window_set_accept_focus (stage_gdk->window, accept_focus);
}
static void
clutter_stage_gdk_show (ClutterStageWindow *stage_window,
gboolean do_raise)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
g_return_if_fail (stage_gdk->window != NULL);
clutter_actor_map (CLUTTER_ACTOR (CLUTTER_STAGE_COGL (stage_gdk)->wrapper));
/* Foreign window should be shown by the embedding framework. */
if (!stage_gdk->foreign_window)
{
if (do_raise)
gdk_window_show (stage_gdk->window);
else
gdk_window_show_unraised (stage_gdk->window);
}
}
static void
clutter_stage_gdk_hide (ClutterStageWindow *stage_window)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
g_return_if_fail (stage_gdk->window != NULL);
clutter_actor_unmap (CLUTTER_ACTOR (CLUTTER_STAGE_COGL (stage_gdk)->wrapper));
/* Foreign window should be hidden by the embedding framework. */
if (!stage_gdk->foreign_window)
gdk_window_hide (stage_gdk->window);
}
static gboolean
clutter_stage_gdk_can_clip_redraws (ClutterStageWindow *stage_window)
{
return TRUE;
}
static int
clutter_stage_gdk_get_scale_factor (ClutterStageWindow *stage_window)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
if (stage_gdk->window == NULL)
return 1;
return gdk_window_get_scale_factor (stage_gdk->window);
}
static void
clutter_stage_gdk_redraw (ClutterStageWindow *stage_window)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
GdkFrameClock *clock;
if (stage_gdk->window == NULL ||
(clock = gdk_window_get_frame_clock (stage_gdk->window)) == NULL)
{
clutter_stage_window_parent_iface->redraw (stage_window);
return;
}
gdk_frame_clock_begin_updating (clock);
clutter_stage_window_parent_iface->redraw (stage_window);
gdk_frame_clock_end_updating (clock);
}
static void
clutter_stage_gdk_schedule_update (ClutterStageWindow *stage_window,
gint sync_delay)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
GdkFrameClock *clock;
if (stage_gdk->window == NULL ||
(clock = gdk_window_get_frame_clock (stage_gdk->window)) == NULL)
{
clutter_stage_window_parent_iface->schedule_update (stage_window, sync_delay);
return;
}
gdk_frame_clock_request_phase (clock, GDK_FRAME_CLOCK_PHASE_PAINT);
clutter_stage_window_parent_iface->schedule_update (stage_window, sync_delay);
}
static gint64
clutter_stage_gdk_get_update_time (ClutterStageWindow *stage_window)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (stage_window);
GdkFrameClock *frame_clock;
GdkFrameTimings *frame_timings;
if (stage_gdk->window == NULL ||
(frame_clock = gdk_window_get_frame_clock (stage_gdk->window)) == NULL ||
(frame_timings = gdk_frame_clock_get_current_timings (frame_clock)) == NULL ||
!gdk_frame_timings_get_complete (frame_timings))
return -1; /* No data, indefinite */
return (gdk_frame_timings_get_presentation_time (frame_timings) +
gdk_frame_timings_get_refresh_interval (frame_timings));
}
static void
clutter_stage_gdk_dispose (GObject *gobject)
{
ClutterStageGdk *stage_gdk = CLUTTER_STAGE_GDK (gobject);
if (stage_gdk->window != NULL)
{
g_object_set_data (G_OBJECT (stage_gdk->window),
"clutter-stage-window", NULL);
if (stage_gdk->foreign_window)
g_object_unref (stage_gdk->window);
else
gdk_window_destroy (stage_gdk->window);
stage_gdk->window = NULL;
}
if (stage_gdk->blank_cursor != NULL)
{
g_object_unref (stage_gdk->blank_cursor);
stage_gdk->blank_cursor = NULL;
}
G_OBJECT_CLASS (clutter_stage_gdk_parent_class)->dispose (gobject);
}
static void
clutter_stage_gdk_class_init (ClutterStageGdkClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->dispose = clutter_stage_gdk_dispose;
}
#if defined(GDK_WINDOWING_WAYLAND)
static void
registry_handle_global (void *data,
struct wl_registry *registry,
uint32_t name,
const char *interface,
uint32_t version)
{
ClutterStageGdk *stage_gdk = data;
if (strcmp (interface, "wl_subcompositor") == 0)
{
stage_gdk->subcompositor = wl_registry_bind (registry,
name,
&wl_subcompositor_interface,
1);
}
}
static void
registry_handle_global_remove (void *data,
struct wl_registry *registry,
uint32_t name)
{
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
registry_handle_global_remove
};
#endif
static void
clutter_stage_gdk_init (ClutterStageGdk *stage)
{
#if defined(GDK_WINDOWING_WAYLAND)
{
GdkDisplay *gdk_display = gdk_display_get_default ();
if (GDK_IS_WAYLAND_DISPLAY (gdk_display))
{
struct wl_display *display;
struct wl_registry *registry;
display = gdk_wayland_display_get_wl_display (gdk_display);
registry = wl_display_get_registry (display);
wl_registry_add_listener (registry, &registry_listener, stage);
wl_display_roundtrip (display);
}
}
#endif
}
static void
clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
{
clutter_stage_window_parent_iface = g_type_interface_peek_parent (iface);
iface->set_title = clutter_stage_gdk_set_title;
iface->set_fullscreen = clutter_stage_gdk_set_fullscreen;
iface->set_cursor_visible = clutter_stage_gdk_set_cursor_visible;
iface->set_user_resizable = clutter_stage_gdk_set_user_resizable;
iface->set_accept_focus = clutter_stage_gdk_set_accept_focus;
iface->show = clutter_stage_gdk_show;
iface->hide = clutter_stage_gdk_hide;
iface->resize = clutter_stage_gdk_resize;
iface->get_geometry = clutter_stage_gdk_get_geometry;
iface->realize = clutter_stage_gdk_realize;
iface->unrealize = clutter_stage_gdk_unrealize;
iface->can_clip_redraws = clutter_stage_gdk_can_clip_redraws;
iface->get_scale_factor = clutter_stage_gdk_get_scale_factor;
iface->redraw = clutter_stage_gdk_redraw;
iface->schedule_update = clutter_stage_gdk_schedule_update;
iface->get_update_time = clutter_stage_gdk_get_update_time;
}
/**
* clutter_gdk_get_stage_window:
* @stage: a #ClutterStage
*
* Gets the stages GdkWindow.
*
* Return value: (transfer none): A GdkWindow* for the stage window.
*
* Since: 1.10
*/
GdkWindow *
clutter_gdk_get_stage_window (ClutterStage *stage)
{
ClutterStageWindow *impl;
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
impl = _clutter_stage_get_window (stage);
if (!CLUTTER_IS_STAGE_GDK (impl))
{
g_critical ("The Clutter backend is not a GDK backend");
return NULL;
}
return CLUTTER_STAGE_GDK (impl)->window;
}
/**
* clutter_gdk_get_stage_from_window:
* @window: a #GtkWindow
*
* Gets the stage for a particular X window.
*
* Return value: (transfer none): A #ClutterStage, or% NULL if a stage
* does not exist for the window
*
* Since: 1.10
*/
ClutterStage *
clutter_gdk_get_stage_from_window (GdkWindow *window)
{
ClutterStageGdk *stage_gdk = g_object_get_data (G_OBJECT (window), "clutter-stage-window");
if (stage_gdk != NULL && CLUTTER_IS_STAGE_GDK (stage_gdk))
return CLUTTER_STAGE_COGL (stage_gdk)->wrapper;
return NULL;
}
typedef struct
{
ClutterStageGdk *stage_gdk;
GdkWindow *window;
} ForeignWindowClosure;
static void
set_foreign_window_callback (ClutterActor *actor,
void *data)
{
ForeignWindowClosure *closure = data;
ClutterStageGdk *stage_gdk = closure->stage_gdk;
stage_gdk->window = closure->window;
stage_gdk->foreign_window = TRUE;
/* calling this with the stage unrealized will unset the stage
* from the GL context; once the stage is realized the GL context
* will be set again
*/
clutter_stage_ensure_current (CLUTTER_STAGE (actor));
}
/**
* clutter_gdk_set_stage_foreign:
* @stage: a #ClutterStage
* @window: an existing #GdkWindow
*
* Target the #ClutterStage to use an existing external #GdkWindow
*
* Return value: %TRUE if foreign window is valid
*
* Since: 1.10
*/
gboolean
clutter_gdk_set_stage_foreign (ClutterStage *stage,
GdkWindow *window)
{
ForeignWindowClosure closure;
ClutterStageGdk *stage_gdk;
ClutterStageWindow *impl;
ClutterActor *actor;
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), FALSE);
g_return_val_if_fail (!CLUTTER_ACTOR_IN_DESTRUCTION (stage), FALSE);
g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
impl = _clutter_stage_get_window (stage);
if (!CLUTTER_IS_STAGE_GDK (impl))
{
g_critical ("The Clutter backend is not a GDK backend");
return FALSE;
}
stage_gdk = CLUTTER_STAGE_GDK (impl);
if (g_object_get_data (G_OBJECT (window), "clutter-stage-window") != NULL)
{
g_critical ("The provided GdkWindow is already in use by another ClutterStage");
return FALSE;
}
closure.stage_gdk = stage_gdk;
closure.window = g_object_ref (window);
actor = CLUTTER_ACTOR (stage);
_clutter_actor_rerealize (actor,
set_foreign_window_callback,
&closure);
/* Queue a relayout - so the stage will be allocated the new
* window size.
*
* Note also that when the stage gets allocated the new
* window size that will result in the stage's
* priv->viewport being changed, which will in turn result
* in the Cogl viewport changing when _clutter_do_redraw
* calls _clutter_stage_maybe_setup_viewport().
*/
clutter_actor_queue_relayout (actor);
return TRUE;
}
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