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[broadway] Copy regions on last_surface during translations too

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This will help make scrolling more efficient
This commit is contained in:
Alexander Larsson 2010-11-16 13:16:38 +01:00
parent 60cf2d53eb
commit f02b7c9ed2
1 changed files with 41 additions and 29 deletions
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70
gdk/broadway/gdkwindow-broadway.c
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@ -1120,43 +1120,55 @@ _gdk_broadway_window_queue_antiexpose (GdkWindow *window,
return TRUE;
}
static void
copy_region (cairo_surface_t *surface,
cairo_region_t *area,
gint dx,
gint dy)
{
cairo_t *cr;
cr = cairo_create (surface);
area = cairo_region_copy (area);
gdk_cairo_region (cr, area);
cairo_clip (cr);
/* NB: This is a self-copy and Cairo doesn't support that yet.
* So we do a litle trick.
*/
cairo_push_group (cr);
cairo_set_source_surface (cr, surface, dx, dy);
cairo_paint (cr);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
cairo_destroy (cr);
}
void
_gdk_broadway_window_translate (GdkWindow *window,
cairo_region_t *area,
gint dx,
gint dy)
cairo_region_t *area,
gint dx,
gint dy)
{
GdkWindowObject *private;
GdkWindowImplBroadway *impl;
cairo_surface_t *surface;
GdkDrawableImplBroadway *impl;
private = (GdkWindowObject *)window;
impl = GDK_WINDOW_IMPL_BROADWAY (private->impl);
impl = GDK_DRAWABLE_IMPL_BROADWAY (private->impl);
surface = GDK_DRAWABLE_IMPL_BROADWAY (impl)->surface;
if (surface)
if (impl->surface)
{
cairo_t *cr;
cr = cairo_create (surface);
area = cairo_region_copy (area);
gdk_cairo_region (cr, area);
cairo_clip (cr);
/* NB: This is a self-copy and Cairo doesn't support that yet.
* So we do a litle trick.
*/
cairo_push_group (cr);
cairo_set_source_surface (cr, surface, dx, dy);
cairo_paint (cr);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
cairo_destroy (cr);
copy_region (impl->surface, area, dx, dy);
if (GDK_WINDOW_IMPL_BROADWAY (impl)->last_synced)
{
copy_region (impl->last_surface, area, dx, dy);
/* TODO: Send copy-rects */
}
}
}