static cairo_status_t
_cairo_xcb_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_xcb_surface_t *surface = abstract_surface;
cairo_surface_t *image;
if (surface->fallback != NULL) {
image = cairo_surface_reference (&surface->fallback->base);
goto DONE;
}
image = _cairo_surface_has_snapshot (&surface->base,
&_cairo_image_surface_backend);
if (image != NULL) {
image = cairo_surface_reference (image);
goto DONE;
}
image = _get_image (surface, FALSE, 0, 0, surface->width, surface->height);
if (unlikely (image->status))
return image->status;
_cairo_surface_attach_snapshot (&surface->base, image, NULL);
DONE:
*image_out = (cairo_image_surface_t *) image;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
/**
* _cairo_surface_snapshot:
* @surface: a #cairo_surface_t
*
* Make an immutable reference to @surface. It is an error to call a
* surface-modifying function on the result of this function. The
* resulting 'snapshot' is a lazily copied-on-write surface i.e. it
* remains a reference to the original surface until that surface is
* written to again, at which time a copy is made of the original surface
* and the snapshot then points to that instead. Multiple snapshots of the
* same unmodified surface point to the same copy.
*
* The caller owns the return value and should call
* cairo_surface_destroy() when finished with it. This function will not
* return %NULL, but will return a nil surface instead.
*
* Return value: The snapshot surface. Note that the return surface
* may not necessarily be of the same type as @surface.
**/
cairo_surface_t *
_cairo_surface_snapshot (cairo_surface_t *surface)
{
cairo_surface_snapshot_t *snapshot;
cairo_status_t status;
TRACE ((stderr, "%s: target=%d\n", __FUNCTION__, surface->unique_id));
if (unlikely (surface->status))
return _cairo_surface_create_in_error (surface->status);
if (unlikely (surface->finished))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
if (surface->snapshot_of != NULL)
return cairo_surface_reference (surface);
if (_cairo_surface_is_snapshot (surface))
return cairo_surface_reference (surface);
snapshot = (cairo_surface_snapshot_t *)
_cairo_surface_has_snapshot (surface, &_cairo_surface_snapshot_backend);
if (snapshot != NULL)
return cairo_surface_reference (&snapshot->base);
snapshot = malloc (sizeof (cairo_surface_snapshot_t));
if (unlikely (snapshot == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
_cairo_surface_init (&snapshot->base,
&_cairo_surface_snapshot_backend,
NULL, /* device */
surface->content);
snapshot->base.type = surface->type;
CAIRO_MUTEX_INIT (snapshot->mutex);
snapshot->target = surface;
snapshot->clone = NULL;
status = _cairo_surface_copy_mime_data (&snapshot->base, surface);
if (unlikely (status)) {
cairo_surface_destroy (&snapshot->base);
return _cairo_surface_create_in_error (status);
}
snapshot->base.device_transform = surface->device_transform;
snapshot->base.device_transform_inverse = surface->device_transform_inverse;
_cairo_surface_attach_snapshot (surface,
&snapshot->base,
_cairo_surface_snapshot_copy_on_write);
return &snapshot->base;
}
static cairo_surface_t *
attach_proxy (cairo_surface_t *source,
cairo_surface_t *target)
{
struct proxy *proxy;
proxy = malloc (sizeof (*proxy));
if (unlikely (proxy == NULL))
return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
_cairo_surface_init (&proxy->base, &proxy_backend, NULL, target->content, target->is_vector);
proxy->target = target;
_cairo_surface_attach_snapshot (source, &proxy->base, NULL);
return &proxy->base;
}
static cairo_status_t
_cairo_xcb_surface_flush (void *abstract_surface,
unsigned flags)
{
cairo_xcb_surface_t *surface = abstract_surface;
cairo_status_t status;
if (flags)
return CAIRO_STATUS_SUCCESS;
if (likely (surface->fallback == NULL)) {
status = CAIRO_STATUS_SUCCESS;
if (! surface->base.finished && surface->deferred_clear)
status = _cairo_xcb_surface_clear (surface);
return status;
}
status = surface->base.status;
if (status == CAIRO_STATUS_SUCCESS &&
(! surface->base._finishing || ! surface->owns_pixmap)) {
status = cairo_surface_status (&surface->fallback->base);
if (status == CAIRO_STATUS_SUCCESS)
status = _cairo_bentley_ottmann_tessellate_boxes (&surface->fallback_damage,
CAIRO_FILL_RULE_WINDING,
&surface->fallback_damage);
if (status == CAIRO_STATUS_SUCCESS)
status = _put_image_boxes (surface,
surface->fallback,
&surface->fallback_damage);
if (status == CAIRO_STATUS_SUCCESS && ! surface->base._finishing) {
_cairo_surface_attach_snapshot (&surface->base,
&surface->fallback->base,
cairo_surface_finish);
}
}
_cairo_boxes_clear (&surface->fallback_damage);
cairo_surface_destroy (&surface->fallback->base);
surface->fallback = NULL;
return status;
}
cairo_status_t
intel_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
intel_surface_t *surface = abstract_surface;
cairo_surface_t *image;
cairo_status_t status;
void *ptr;
if (surface->drm.fallback != NULL) {
image = surface->drm.fallback;
goto DONE;
}
image = _cairo_surface_has_snapshot (&surface->drm.base,
&_cairo_image_surface_backend);
if (image != NULL)
goto DONE;
if (surface->drm.base.backend->flush != NULL) {
status = surface->drm.base.backend->flush (surface);
if (unlikely (status))
return status;
}
ptr = intel_bo_map (to_intel_device (surface->drm.base.device),
to_intel_bo (surface->drm.bo));
if (unlikely (ptr == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
image = cairo_image_surface_create_for_data (ptr,
surface->drm.format,
surface->drm.width,
surface->drm.height,
surface->drm.stride);
if (unlikely (image->status))
return image->status;
_cairo_surface_attach_snapshot (&surface->drm.base, image, surface_finish_and_destroy);
DONE:
*image_out = (cairo_image_surface_t *) cairo_surface_reference (image);
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_surface_subsurface_set_snapshot (cairo_surface_t *surface,
cairo_surface_t *snapshot)
{
cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
TRACE ((stderr, "%s: target=%d, snapshot=%d\n", __FUNCTION__,
ss->target->unique_id, snapshot->unique_id));
if (ss->snapshot)
_cairo_surface_detach_snapshot (ss->snapshot);
ss->snapshot = cairo_surface_reference (snapshot);
_cairo_surface_attach_snapshot (ss->target, &ss->base,
_cairo_surface_subsurface_detach_snapshot);
}
static cairo_status_t
radeon_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
radeon_surface_t *surface = abstract_surface;
cairo_surface_t *image;
cairo_status_t status;
/* XXX batch flush */
if (surface->base.fallback != NULL) {
image = surface->base.fallback;
goto DONE;
}
image = _cairo_surface_has_snapshot (&surface->base.base,
&_cairo_image_surface_backend);
if (image != NULL)
goto DONE;
if (surface->base.base.backend->flush != NULL) {
status = surface->base.base.backend->flush (surface);
if (unlikely (status))
return status;
}
image = radeon_bo_get_image (to_radeon_device (surface->base.base.device),
to_radeon_bo (surface->base.bo),
&surface->base);
status = image->status;
if (unlikely (status))
return status;
_cairo_surface_attach_snapshot (&surface->base.base, image, cairo_surface_destroy);
DONE:
*image_out = (cairo_image_surface_t *) cairo_surface_reference (image);
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_recording_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_status_t status;
cairo_recording_surface_t *surface = abstract_surface;
cairo_surface_t *image;
image = _cairo_surface_has_snapshot (&surface->base,
&_cairo_image_surface_backend);
if (image != NULL) {
*image_out = (cairo_image_surface_t *) cairo_surface_reference (image);
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
image = _cairo_image_surface_create_with_content (surface->content,
surface->extents.width,
surface->extents.height);
if (unlikely (image->status))
return image->status;
cairo_surface_set_device_offset (image,
-surface->extents.x,
-surface->extents.y);
status = _cairo_recording_surface_replay (&surface->base, image);
if (unlikely (status)) {
cairo_surface_destroy (image);
return status;
}
_cairo_surface_attach_snapshot (&surface->base, image, NULL);
*image_out = (cairo_image_surface_t *) image;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_xcb_surface_flush (void *abstract_surface)
{
cairo_xcb_surface_t *surface = abstract_surface;
cairo_status_t status;
if (surface->drm != NULL && ! surface->marked_dirty)
return surface->drm->backend->flush (surface->drm);
if (likely (surface->fallback == NULL)) {
status = CAIRO_STATUS_SUCCESS;
if (! surface->base.finished && surface->deferred_clear)
status = _cairo_xcb_surface_clear (surface);
return status;
}
status = surface->base.status;
if (status == CAIRO_STATUS_SUCCESS && ! surface->base.finished) {
status = cairo_surface_status (surface->fallback);
if (status == CAIRO_STATUS_SUCCESS) {
status = _put_image (surface,
(cairo_image_surface_t *) surface->fallback);
}
if (status == CAIRO_STATUS_SUCCESS) {
_cairo_surface_attach_snapshot (&surface->base,
surface->fallback,
cairo_surface_finish);
}
}
cairo_surface_destroy (surface->fallback);
surface->fallback = NULL;
return status;
}
static cairo_status_t
_cairo_xcb_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_xcb_surface_t *surface = abstract_surface;
cairo_image_surface_t *image;
cairo_status_t status;
if (surface->drm != NULL && ! surface->marked_dirty) {
return _cairo_surface_acquire_source_image (surface->drm,
image_out, image_extra);
}
if (surface->fallback != NULL) {
image = (cairo_image_surface_t *) cairo_surface_reference (surface->fallback);
goto DONE;
}
image = (cairo_image_surface_t *)
_cairo_surface_has_snapshot (&surface->base,
&_cairo_image_surface_backend);
if (image != NULL) {
image = (cairo_image_surface_t *) cairo_surface_reference (&image->base);
goto DONE;
}
status = _get_image (surface, FALSE, &image);
if (unlikely (status))
return status;
_cairo_surface_attach_snapshot (&surface->base, &image->base, NULL);
DONE:
*image_out = image;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_surface_subsurface_set_snapshot (cairo_surface_t *surface,
cairo_surface_t *snapshot)
{
cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
TRACE ((stderr, "%s: target=%d, snapshot=%d\n", __FUNCTION__,
ss->target->unique_id, snapshot->unique_id));
/* FIXME: attaching the subsurface as a snapshot to its target creates
* a reference cycle. Let's make this call as a no-op until that bug
* is fixed.
*/
return;
if (ss->snapshot)
_cairo_surface_detach_snapshot (ss->snapshot);
ss->snapshot = cairo_surface_reference (snapshot);
_cairo_surface_attach_snapshot (ss->target, &ss->base,
_cairo_surface_subsurface_detach_snapshot);
}
/**
* _cairo_surface_snapshot
* @surface: a #cairo_surface_t
*
* Make an immutable reference to @surface. It is an error to call a
* surface-modifying function on the result of this function. The
* resulting 'snapshot' is a lazily copied-on-write surface i.e. it
* remains a reference to the original surface until that surface is
* written to again, at which time a copy is made of the original surface
* and the snapshot then points to that instead. Multiple snapshots of the
* same unmodified surface point to the same copy.
*
* The caller owns the return value and should call
* cairo_surface_destroy() when finished with it. This function will not
* return %NULL, but will return a nil surface instead.
*
* Return value: The snapshot surface. Note that the return surface
* may not necessarily be of the same type as @surface.
**/
cairo_surface_t *
_cairo_surface_snapshot (cairo_surface_t *surface)
{
cairo_surface_snapshot_t *snapshot;
cairo_status_t status;
if (unlikely (surface->status))
return _cairo_surface_create_in_error (surface->status);
if (surface->finished)
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
if (surface->snapshot_of != NULL)
return cairo_surface_reference (surface);
if (surface->backend->snapshot != NULL) {
cairo_surface_t *snap;
snap = _cairo_surface_has_snapshot (surface, surface->backend);
if (snap != NULL)
return cairo_surface_reference (snap);
snap = surface->backend->snapshot (surface);
if (snap != NULL) {
if (unlikely (snap->status))
return snap;
status = _cairo_surface_copy_mime_data (snap, surface);
if (unlikely (status)) {
cairo_surface_destroy (snap);
return _cairo_surface_create_in_error (status);
}
snap->device_transform = surface->device_transform;
snap->device_transform_inverse = surface->device_transform_inverse;
_cairo_surface_attach_snapshot (surface, snap, NULL);
return snap;
}
}
snapshot = (cairo_surface_snapshot_t *)
_cairo_surface_has_snapshot (surface, &_cairo_surface_snapshot_backend);
if (snapshot != NULL)
return cairo_surface_reference (&snapshot->base);
snapshot = malloc (sizeof (cairo_surface_snapshot_t));
if (unlikely (snapshot == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
_cairo_surface_init (&snapshot->base,
&_cairo_surface_snapshot_backend,
NULL, /* device */
surface->content);
snapshot->base.type = surface->type;
snapshot->target = surface;
snapshot->clone = NULL;
status = _cairo_surface_copy_mime_data (&snapshot->base, surface);
if (unlikely (status)) {
cairo_surface_destroy (&snapshot->base);
return _cairo_surface_create_in_error (status);
}
snapshot->base.device_transform = surface->device_transform;
snapshot->base.device_transform_inverse = surface->device_transform_inverse;
_cairo_surface_attach_snapshot (surface,
&snapshot->base,
_cairo_surface_snapshot_copy_on_write);
return &snapshot->base;
}
static cairo_xcb_pixmap_t *
_cairo_xcb_surface_pixmap (cairo_xcb_surface_t *target,
const cairo_surface_pattern_t *pattern,
const cairo_rectangle_int_t *extents,
int tx, int ty)
{
cairo_surface_t *source;
cairo_xcb_pixmap_t *pixmap;
source = pattern->surface;
pixmap = (cairo_xcb_pixmap_t *)
_cairo_surface_has_snapshot (source, &_cairo_xcb_pixmap_backend);
if (pixmap != NULL && pixmap->screen == target->screen)
return (cairo_xcb_pixmap_t *) cairo_surface_reference (&pixmap->base);
if (source->type == CAIRO_SURFACE_TYPE_XCB &&
((cairo_xcb_surface_t *) source)->screen == target->screen)
{
cairo_xcb_surface_t *xcb_source = (cairo_xcb_surface_t *) source;
if (xcb_source->depth == target->depth)
pixmap = _copy_to_pixmap (xcb_source);
}
#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
else if (source->type == CAIRO_SURFACE_TYPE_XLIB &&
((cairo_xlib_xcb_surface_t *) source)->xcb->screen == target->screen)
{
cairo_xcb_surface_t *xcb_source = ((cairo_xlib_xcb_surface_t *) source)->xcb;
if (xcb_source->depth == target->depth)
pixmap = _copy_to_pixmap (xcb_source);
}
#endif
if (pixmap == NULL) {
cairo_rectangle_int_t rect;
if (! _cairo_surface_get_extents (source, &rect)) {
rect.x = rect.y = 0;
rect.width = target->width;
rect.height = target->height;
}
pixmap = _render_to_pixmap (target, &pattern->base, &rect);
}
if (unlikely (pixmap->base.status))
return pixmap;
_cairo_surface_attach_snapshot (source, &pixmap->base, NULL);
if (pattern->base.extend != CAIRO_EXTEND_NONE) {
if (extents->x < 0 || extents->y < 0 ||
extents->x + extents->width > pixmap->width ||
extents->y + extents->height > pixmap->height)
{
pixmap->repeat = TRUE;
}
}
pixmap->x0 += tx;
pixmap->y0 += ty;
return pixmap;
}
