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paginated: unwrap subsurfaces during context creation

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-08-14 01:21:42 +01:00
parent 6b3d53646e
commit 8f99e926c8
2 changed files with 19 additions and 1 deletions
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8
src/cairo-paginated-surface.c
View file

@ -50,6 +50,7 @@
#include "cairo-analysis-surface-private.h"
#include "cairo-error-private.h"
#include "cairo-image-surface-private.h"
#include "cairo-surface-subsurface-private.h"
static const cairo_surface_backend_t cairo_paginated_surface_backend;
@ -652,7 +653,12 @@ static cairo_t *
_cairo_paginated_context_create (void *target)
{
cairo_paginated_surface_t *surface = target;
return surface->recording_surface->backend->create_context (surface);
if (_cairo_surface_is_subsurface (&surface->base))
surface = (cairo_paginated_surface_t *)
_cairo_surface_subsurface_get_target (&surface->base);
return surface->recording_surface->backend->create_context (target);
}
static const cairo_surface_backend_t cairo_paginated_surface_backend = {

12
src/cairo-surface-subsurface-private.h
View file

@ -46,4 +46,16 @@ struct _cairo_surface_subsurface {
cairo_surface_t *target;
};
static inline cairo_surface_t *
_cairo_surface_subsurface_get_target (cairo_surface_t *surface)
{
return ((cairo_surface_subsurface_t *) surface)->target;
}
static inline cairo_bool_t
_cairo_surface_is_subsurface (cairo_surface_t *surface)
{
return surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE;
}
#endif /* CAIRO_SURFACE_SUBSURFACE_PRIVATE_H */