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gdk: x11: notify Cogl immediately of a foreign window resize

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We want to avoid waiting for the acknowledgement event from the X
server as we might redraw the stage before that happens.

This patch reimplements a bit of logic already in clutter-gtk [1].

[1] : https://git.gnome.org/browse/clutter-gtk/tree/clutter-gtk/gtk-clutter-embed.c#n723

https://bugzilla.gnome.org/show_bug.cgi?id=754993
This commit is contained in:
Lionel Landwerlin 2015-09-14 01:00:12 +02:00
parent aeb19f2f4d
commit ee98a5bbe8
1 changed files with 34 additions and 8 deletions
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30
clutter/gdk/clutter-stage-gdk.c
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@ -269,18 +269,44 @@ _clutter_stage_gdk_notify_configure (ClutterStageGdk *stage_gdk,
gint width,
gint height)
{
#if defined(GDK_WINDOWING_WAYLAND)
if (x < 0 || y < 0 || width < 1 || height < 1)
return;
if (stage_gdk->foreign_window &&
if (stage_gdk->foreign_window)
{
#if defined(GDK_WINDOWING_WAYLAND)
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);
/* TODO: we might need to apply the scale factor here. */
wl_subsurface_set_position (stage_gdk->subsurface, rx, ry);
}
else
#endif
#if defined(GDK_WINDOWING_X11)
if (GDK_IS_X11_WINDOW (stage_gdk->window))
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_gdk);
ClutterBackend *backend = CLUTTER_BACKEND (stage_cogl->backend);
int scale_factor = gdk_window_get_scale_factor (stage_gdk->window);
XConfigureEvent xevent = { ConfigureNotify };
xevent.window = GDK_WINDOW_XID (stage_gdk->window);
xevent.width = width * scale_factor;
xevent.height = height * scale_factor;
/* 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