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Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-surface-snapshot.c')
-rw-r--r--libs/cairo-1.16.0/src/cairo-surface-snapshot.c293
1 files changed, 0 insertions, 293 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-surface-snapshot.c b/libs/cairo-1.16.0/src/cairo-surface-snapshot.c
deleted file mode 100644
index a8b8c0e..0000000
--- a/libs/cairo-1.16.0/src/cairo-surface-snapshot.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/* cairo - a vector graphics library with display and print output
- *
- * Copyright © 2002 University of Southern California
- * Copyright © 2005 Red Hat, Inc.
- * Copyright © 2009 Intel Corporation
- *
- * This library is free software; you can redistribute it and/or
- * modify it either under the terms of the GNU Lesser General Public
- * License version 2.1 as published by the Free Software Foundation
- * (the "LGPL") or, at your option, under the terms of the Mozilla
- * Public License Version 1.1 (the "MPL"). If you do not alter this
- * notice, a recipient may use your version of this file under either
- * the MPL or the LGPL.
- *
- * You should have received a copy of the LGPL along with this library
- * in the file COPYING-LGPL-2.1; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
- * You should have received a copy of the MPL along with this library
- * in the file COPYING-MPL-1.1
- *
- * The contents of this file are subject to the Mozilla Public License
- * Version 1.1 (the "License"); you may not use this file except in
- * compliance with the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
- * OF ANY KIND, either express or implied. See the LGPL or the MPL for
- * the specific language governing rights and limitations.
- *
- * The Original Code is the cairo graphics library.
- *
- * The Initial Developer of the Original Code is University of Southern
- * California.
- *
- * Contributor(s):
- * Carl D. Worth <cworth@cworth.org>
- * Chris Wilson <chris@chris-wilson.co.uk>
- */
-
-#include "cairoint.h"
-
-#include "cairo-error-private.h"
-#include "cairo-image-surface-private.h"
-#include "cairo-surface-snapshot-inline.h"
-
-static cairo_status_t
-_cairo_surface_snapshot_finish (void *abstract_surface)
-{
- cairo_surface_snapshot_t *surface = abstract_surface;
- cairo_status_t status = CAIRO_STATUS_SUCCESS;
-
- TRACE ((stderr, "%s\n", __FUNCTION__));
-
- if (surface->clone != NULL) {
- cairo_surface_finish (surface->clone);
- status = surface->clone->status;
-
- cairo_surface_destroy (surface->clone);
- }
-
- CAIRO_MUTEX_FINI (surface->mutex);
-
- return status;
-}
-
-static cairo_status_t
-_cairo_surface_snapshot_flush (void *abstract_surface, unsigned flags)
-{
- cairo_surface_snapshot_t *surface = abstract_surface;
- cairo_surface_t *target;
- cairo_status_t status;
-
- target = _cairo_surface_snapshot_get_target (&surface->base);
- status = _cairo_surface_flush (target, flags);
- cairo_surface_destroy (target);
-
- return status;
-}
-
-static cairo_surface_t *
-_cairo_surface_snapshot_source (void *abstract_surface,
- cairo_rectangle_int_t *extents)
-{
- cairo_surface_snapshot_t *surface = abstract_surface;
- return _cairo_surface_get_source (surface->target, extents); /* XXX racy */
-}
-
-struct snapshot_extra {
- cairo_surface_t *target;
- void *extra;
-};
-
-static cairo_status_t
-_cairo_surface_snapshot_acquire_source_image (void *abstract_surface,
- cairo_image_surface_t **image_out,
- void **extra_out)
-{
- cairo_surface_snapshot_t *surface = abstract_surface;
- struct snapshot_extra *extra;
- cairo_status_t status;
-
- extra = _cairo_malloc (sizeof (*extra));
- if (unlikely (extra == NULL)) {
- *extra_out = NULL;
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
-
- extra->target = _cairo_surface_snapshot_get_target (&surface->base);
- status = _cairo_surface_acquire_source_image (extra->target, image_out, &extra->extra);
- if (unlikely (status)) {
- cairo_surface_destroy (extra->target);
- free (extra);
- extra = NULL;
- }
-
- *extra_out = extra;
- return status;
-}
-
-static void
-_cairo_surface_snapshot_release_source_image (void *abstract_surface,
- cairo_image_surface_t *image,
- void *_extra)
-{
- struct snapshot_extra *extra = _extra;
-
- _cairo_surface_release_source_image (extra->target, image, extra->extra);
- cairo_surface_destroy (extra->target);
- free (extra);
-}
-
-static cairo_bool_t
-_cairo_surface_snapshot_get_extents (void *abstract_surface,
- cairo_rectangle_int_t *extents)
-{
- cairo_surface_snapshot_t *surface = abstract_surface;
- cairo_surface_t *target;
- cairo_bool_t bounded;
-
- target = _cairo_surface_snapshot_get_target (&surface->base);
- bounded = _cairo_surface_get_extents (target, extents);
- cairo_surface_destroy (target);
-
- return bounded;
-}
-
-static const cairo_surface_backend_t _cairo_surface_snapshot_backend = {
- CAIRO_INTERNAL_SURFACE_TYPE_SNAPSHOT,
- _cairo_surface_snapshot_finish,
- NULL,
-
- NULL, /* create similar */
- NULL, /* create similar image */
- NULL, /* map to image */
- NULL, /* unmap image */
-
- _cairo_surface_snapshot_source,
- _cairo_surface_snapshot_acquire_source_image,
- _cairo_surface_snapshot_release_source_image,
- NULL, /* snapshot */
-
- NULL, /* copy_page */
- NULL, /* show_page */
-
- _cairo_surface_snapshot_get_extents,
- NULL, /* get-font-options */
-
- _cairo_surface_snapshot_flush,
-};
-
-static void
-_cairo_surface_snapshot_copy_on_write (cairo_surface_t *surface)
-{
- cairo_surface_snapshot_t *snapshot = (cairo_surface_snapshot_t *) surface;
- cairo_image_surface_t *image;
- cairo_surface_t *clone;
- void *extra;
- cairo_status_t status;
-
- TRACE ((stderr, "%s: target=%d\n",
- __FUNCTION__, snapshot->target->unique_id));
-
- /* We need to make an image copy of the original surface since the
- * snapshot may exceed the lifetime of the original device, i.e.
- * when we later need to use the snapshot the data may have already
- * been lost.
- */
-
- CAIRO_MUTEX_LOCK (snapshot->mutex);
-
- if (snapshot->target->backend->snapshot != NULL) {
- clone = snapshot->target->backend->snapshot (snapshot->target);
- if (clone != NULL) {
- assert (clone->status || ! _cairo_surface_is_snapshot (clone));
- goto done;
- }
- }
-
- /* XXX copy to a similar surface, leave acquisition till later?
- * We should probably leave such decisions to the backend in case we
- * rely upon devices/connections like Xlib.
- */
- status = _cairo_surface_acquire_source_image (snapshot->target, &image, &extra);
- if (unlikely (status)) {
- snapshot->target = _cairo_surface_create_in_error (status);
- status = _cairo_surface_set_error (surface, status);
- goto unlock;
- }
- clone = image->base.backend->snapshot (&image->base);
- _cairo_surface_release_source_image (snapshot->target, image, extra);
-
-done:
- status = _cairo_surface_set_error (surface, clone->status);
- snapshot->target = snapshot->clone = clone;
- snapshot->base.type = clone->type;
-unlock:
- CAIRO_MUTEX_UNLOCK (snapshot->mutex);
-}
-
-/**
- * _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 = _cairo_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,
- surface->is_vector);
- 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;
-}
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