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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2005 Red Hat, Inc
* Copyright © 2007 Adrian Johnson
*
* 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 Red Hat, Inc.
*
* Contributor(s):
* Kristian Høgsberg <krh@redhat.com>
* Carl Worth <cworth@cworth.org>
* Adrian Johnson <ajohnson@redneon.com>
*/
/**
* SECTION:cairo-recording
* @Title: Recording Surfaces
* @Short_Description: Records all drawing operations
* @See_Also: #cairo_surface_t
*
* A recording surface is a surface that records all drawing operations at
* the highest level of the surface backend interface, (that is, the
* level of paint, mask, stroke, fill, and show_text_glyphs). The recording
* surface can then be "replayed" against any target surface by using it
* as a source surface.
*
* If you want to replay a surface so that the results in target will be
* identical to the results that would have been obtained if the original
* operations applied to the recording surface had instead been applied to the
* target surface, you can use code like this:
* <informalexample><programlisting>
* cairo_t *cr;
*
* cr = cairo_create (target);
* cairo_set_source_surface (cr, recording_surface, 0.0, 0.0);
* cairo_paint (cr);
* cairo_destroy (cr);
* </programlisting></informalexample>
*
* A recording surface is logically unbounded, i.e. it has no implicit constraint
* on the size of the drawing surface. However, in practice this is rarely
* useful as you wish to replay against a particular target surface with
* known bounds. For this case, it is more efficient to specify the target
* extents to the recording surface upon creation.
*
* The recording phase of the recording surface is careful to snapshot all
* necessary objects (paths, patterns, etc.), in order to achieve
* accurate replay. The efficiency of the recording surface could be
* improved by improving the implementation of snapshot for the
* various objects. For example, it would be nice to have a
* copy-on-write implementation for _cairo_surface_snapshot.
**/
#include "cairoint.h"
#include "cairo-array-private.h"
#include "cairo-analysis-surface-private.h"
#include "cairo-clip-private.h"
#include "cairo-combsort-inline.h"
#include "cairo-composite-rectangles-private.h"
#include "cairo-default-context-private.h"
#include "cairo-error-private.h"
#include "cairo-image-surface-private.h"
#include "cairo-recording-surface-inline.h"
#include "cairo-surface-snapshot-inline.h"
#include "cairo-surface-wrapper-private.h"
#include "cairo-traps-private.h"
typedef enum {
CAIRO_RECORDING_REPLAY,
CAIRO_RECORDING_CREATE_REGIONS
} cairo_recording_replay_type_t;
static const cairo_surface_backend_t cairo_recording_surface_backend;
/**
* CAIRO_HAS_RECORDING_SURFACE:
*
* Defined if the recording surface backend is available.
* The recording surface backend is always built in.
* This macro was added for completeness in cairo 1.10.
*
* Since: 1.10
**/
/* Currently all recording surfaces do have a size which should be passed
* in as the maximum size of any target surface against which the
* recording-surface will ever be replayed.
*
* XXX: The naming of "pixels" in the size here is a misnomer. It's
* actually a size in whatever device-space units are desired (again,
* according to the intended replay target).
*/
static int bbtree_left_or_right (struct bbtree *bbt,
const cairo_box_t *box)
{
int left, right;
if (bbt->left) {
cairo_box_t *e = &bbt->left->extents;
cairo_box_t b;
b.p1.x = MIN (e->p1.x, box->p1.x);
b.p1.y = MIN (e->p1.y, box->p1.y);
b.p2.x = MAX (e->p2.x, box->p2.x);
b.p2.y = MAX (e->p2.y, box->p2.y);
left = _cairo_fixed_integer_part (b.p2.x - b.p1.x) * _cairo_fixed_integer_part (b.p2.y - b.p1.y);
left -= _cairo_fixed_integer_part (e->p2.x - e->p1.x) * _cairo_fixed_integer_part (e->p2.y - e->p1.y);
} else
left = 0;
if (bbt->right) {
cairo_box_t *e = &bbt->right->extents;
cairo_box_t b;
b.p1.x = MIN (e->p1.x, box->p1.x);
b.p1.y = MIN (e->p1.y, box->p1.y);
b.p2.x = MAX (e->p2.x, box->p2.x);
b.p2.y = MAX (e->p2.y, box->p2.y);
right = _cairo_fixed_integer_part (b.p2.x - b.p1.x) * _cairo_fixed_integer_part (b.p2.y - b.p1.y);
right -= _cairo_fixed_integer_part (e->p2.x - e->p1.x) * _cairo_fixed_integer_part (e->p2.y - e->p1.y);
} else
right = 0;
return left <= right;
}
#define INVALID_CHAIN ((cairo_command_header_t *)-1)
static struct bbtree *
bbtree_new (const cairo_box_t *box, cairo_command_header_t *chain)
{
struct bbtree *bbt = malloc (sizeof (*bbt));
if (bbt == NULL)
return NULL;
bbt->extents = *box;
bbt->left = bbt->right = NULL;
bbt->chain = chain;
return bbt;
}
static void
bbtree_init (struct bbtree *bbt, cairo_command_header_t *header)
{
_cairo_box_from_rectangle (&bbt->extents, &header->extents);
bbt->chain = header;
}
static cairo_status_t
bbtree_add (struct bbtree *bbt,
cairo_command_header_t *header,
const cairo_box_t *box)
{
if (box->p1.x < bbt->extents.p1.x || box->p1.y < bbt->extents.p1.y ||
box->p2.x > bbt->extents.p2.x || box->p2.y > bbt->extents.p2.y)
{
if (bbt->chain) {
if (bbtree_left_or_right (bbt, &bbt->extents)) {
if (bbt->left == NULL) {
bbt->left = bbtree_new (&bbt->extents, bbt->chain);
if (unlikely (bbt->left == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
} else
bbtree_add (bbt->left, bbt->chain, &bbt->extents);
} else {
if (bbt->right == NULL) {
bbt->right = bbtree_new (&bbt->extents, bbt->chain);
if (unlikely (bbt->right == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
} else
bbtree_add (bbt->right, bbt->chain, &bbt->extents);
}
bbt->chain = NULL;
}
bbt->extents.p1.x = MIN (bbt->extents.p1.x, box->p1.x);
bbt->extents.p1.y = MIN (bbt->extents.p1.y, box->p1.y);
bbt->extents.p2.x = MAX (bbt->extents.p2.x, box->p2.x);
bbt->extents.p2.y = MAX (bbt->extents.p2.y, box->p2.y);
}
if (box->p1.x == bbt->extents.p1.x && box->p1.y == bbt->extents.p1.y &&
box->p2.x == bbt->extents.p2.x && box->p2.y == bbt->extents.p2.y)
{
cairo_command_header_t *last = header;
while (last->chain) /* expected to be infrequent */
last = last->chain;
last->chain = bbt->chain;
bbt->chain = header;
return CAIRO_STATUS_SUCCESS;
}
if (bbtree_left_or_right (bbt, box)) {
if (bbt->left == NULL) {
bbt->left = bbtree_new (box, header);
if (unlikely (bbt->left == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
} else
return bbtree_add (bbt->left, header, box);
} else {
if (bbt->right == NULL) {
bbt->right = bbtree_new (box, header);
if (unlikely (bbt->right == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
} else
return bbtree_add (bbt->right, header, box);
}
return CAIRO_STATUS_SUCCESS;
}
static void bbtree_del (struct bbtree *bbt)
{
if (bbt->left)
bbtree_del (bbt->left);
if (bbt->right)
bbtree_del (bbt->right);
free (bbt);
}
static cairo_bool_t box_outside (const cairo_box_t *a, const cairo_box_t *b)
{
return
a->p1.x >= b->p2.x || a->p1.y >= b->p2.y ||
a->p2.x <= b->p1.x || a->p2.y <= b->p1.y;
}
static void
bbtree_foreach_mark_visible (struct bbtree *bbt,
const cairo_box_t *box,
unsigned int **indices)
{
cairo_command_header_t *chain;
for (chain = bbt->chain; chain; chain = chain->chain)
*(*indices)++ = chain->index;
if (bbt->left && ! box_outside (box, &bbt->left->extents))
bbtree_foreach_mark_visible (bbt->left, box, indices);
if (bbt->right && ! box_outside (box, &bbt->right->extents))
bbtree_foreach_mark_visible (bbt->right, box, indices);
}
static inline int intcmp (const unsigned int a, const unsigned int b)
{
return a - b;
}
CAIRO_COMBSORT_DECLARE (sort_indices, unsigned int, intcmp)
static inline int sizecmp (unsigned int a, unsigned int b, cairo_command_header_t **elements)
{
const cairo_rectangle_int_t *r;
r = &elements[a]->extents;
a = r->width * r->height;
r = &elements[b]->extents;
b = r->width * r->height;
return b - a;
}
CAIRO_COMBSORT_DECLARE_WITH_DATA (sort_commands, unsigned int, sizecmp)
static void
_cairo_recording_surface_destroy_bbtree (cairo_recording_surface_t *surface)
{
cairo_command_t **elements;
int i, num_elements;
if (surface->bbtree.chain == INVALID_CHAIN)
return;
if (surface->bbtree.left) {
bbtree_del (surface->bbtree.left);
surface->bbtree.left = NULL;
}
if (surface->bbtree.right) {
bbtree_del (surface->bbtree.right);
surface->bbtree.right = NULL;
}
elements = _cairo_array_index (&surface->commands, 0);
num_elements = surface->commands.num_elements;
for (i = 0; i < num_elements; i++)
elements[i]->header.chain = NULL;
surface->bbtree.chain = INVALID_CHAIN;
}
static cairo_status_t
_cairo_recording_surface_create_bbtree (cairo_recording_surface_t *surface)
{
cairo_command_t **elements = _cairo_array_index (&surface->commands, 0);
unsigned int *indices;
cairo_status_t status;
unsigned int i, count;
count = surface->commands.num_elements;
if (count > surface->num_indices) {
free (surface->indices);
surface->indices = _cairo_malloc_ab (count, sizeof (int));
if (unlikely (surface->indices == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
surface->num_indices = count;
}
indices = surface->indices;
for (i = 0; i < count; i++)
indices[i] = i;
sort_commands (indices, count, elements);
bbtree_init (&surface->bbtree, &elements[indices[0]]->header);
for (i = 1; i < count; i++) {
cairo_command_header_t *header = &elements[indices[i]]->header;
cairo_box_t box;
_cairo_box_from_rectangle (&box, &header->extents);
status = bbtree_add (&surface->bbtree, header, &box);
if (unlikely (status))
goto cleanup;
}
return CAIRO_STATUS_SUCCESS;
cleanup:
bbtree_del (&surface->bbtree);
return status;
}
/**
* cairo_recording_surface_create:
* @content: the content of the recording surface
* @extents: the extents to record in pixels, can be %NULL to record
* unbounded operations.
*
* Creates a recording-surface which can be used to record all drawing operations
* at the highest level (that is, the level of paint, mask, stroke, fill
* and show_text_glyphs). The recording surface can then be "replayed" against
* any target surface by using it as a source to drawing operations.
*
* The recording phase of the recording surface is careful to snapshot all
* necessary objects (paths, patterns, etc.), in order to achieve
* accurate replay.
*
* Return value: a pointer to the newly created surface. The caller
* owns the surface and should call cairo_surface_destroy() when done
* with it.
*
* Since: 1.10
**/
cairo_surface_t *
cairo_recording_surface_create (cairo_content_t content,
const cairo_rectangle_t *extents)
{
cairo_recording_surface_t *surface;
surface = malloc (sizeof (cairo_recording_surface_t));
if (unlikely (surface == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&surface->base,
&cairo_recording_surface_backend,
NULL, /* device */
content);
surface->unbounded = TRUE;
/* unbounded -> 'infinite' extents */
if (extents != NULL) {
surface->extents_pixels = *extents;
/* XXX check for overflow */
surface->extents.x = floor (extents->x);
surface->extents.y = floor (extents->y);
surface->extents.width = ceil (extents->x + extents->width) - surface->extents.x;
surface->extents.height = ceil (extents->y + extents->height) - surface->extents.y;
surface->unbounded = FALSE;
}
_cairo_array_init (&surface->commands, sizeof (cairo_command_t *));
surface->base.is_clear = TRUE;
surface->bbtree.left = surface->bbtree.right = NULL;
surface->bbtree.chain = INVALID_CHAIN;
surface->indices = NULL;
surface->num_indices = 0;
surface->optimize_clears = TRUE;
surface->has_bilevel_alpha = FALSE;
surface->has_only_op_over = FALSE;
return &surface->base;
}
slim_hidden_def (cairo_recording_surface_create);
static cairo_surface_t *
_cairo_recording_surface_create_similar (void *abstract_surface,
cairo_content_t content,
int width,
int height)
{
cairo_rectangle_t extents;
extents.x = extents.y = 0;
extents.width = width;
extents.height = height;
return cairo_recording_surface_create (content, &extents);
}
static cairo_status_t
_cairo_recording_surface_finish (void *abstract_surface)
{
cairo_recording_surface_t *surface = abstract_surface;
cairo_command_t **elements;
int i, num_elements;
num_elements = surface->commands.num_elements;
elements = _cairo_array_index (&surface->commands, 0);
for (i = 0; i < num_elements; i++) {
cairo_command_t *command = elements[i];
switch (command->header.type) {
case CAIRO_COMMAND_PAINT:
_cairo_pattern_fini (&command->paint.source.base);
break;
case CAIRO_COMMAND_MASK:
_cairo_pattern_fini (&command->mask.source.base);
_cairo_pattern_fini (&command->mask.mask.base);
break;
case CAIRO_COMMAND_STROKE:
_cairo_pattern_fini (&command->stroke.source.base);
_cairo_path_fixed_fini (&command->stroke.path);
_cairo_stroke_style_fini (&command->stroke.style);
break;
case CAIRO_COMMAND_FILL:
_cairo_pattern_fini (&command->fill.source.base);
_cairo_path_fixed_fini (&command->fill.path);
break;
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
_cairo_pattern_fini (&command->show_text_glyphs.source.base);
free (command->show_text_glyphs.utf8);
free (command->show_text_glyphs.glyphs);
free (command->show_text_glyphs.clusters);
cairo_scaled_font_destroy (command->show_text_glyphs.scaled_font);
break;
default:
ASSERT_NOT_REACHED;
}
_cairo_clip_destroy (command->header.clip);
free (command);
}
_cairo_array_fini (&surface->commands);
if (surface->bbtree.left)
bbtree_del (surface->bbtree.left);
if (surface->bbtree.right)
bbtree_del (surface->bbtree.right);
free (surface->indices);
return CAIRO_STATUS_SUCCESS;
}
struct proxy {
cairo_surface_t base;
cairo_surface_t *image;
};
static cairo_status_t
proxy_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
struct proxy *proxy = abstract_surface;
return _cairo_surface_acquire_source_image (proxy->image, image_out, image_extra);
}
static void
proxy_release_source_image (void *abstract_surface,
cairo_image_surface_t *image,
void *image_extra)
{
struct proxy *proxy = abstract_surface;
_cairo_surface_release_source_image (proxy->image, image, image_extra);
}
static cairo_status_t
proxy_finish (void *abstract_surface)
{
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t proxy_backend = {
CAIRO_INTERNAL_SURFACE_TYPE_NULL,
proxy_finish,
NULL,
NULL, /* create similar */
NULL, /* create similar image */
NULL, /* map to image */
NULL, /* unmap image */
_cairo_surface_default_source,
proxy_acquire_source_image,
proxy_release_source_image,
};
static cairo_surface_t *
attach_proxy (cairo_surface_t *source,
cairo_surface_t *image)
{
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, image->content);
proxy->image = image;
_cairo_surface_attach_snapshot (source, &proxy->base, NULL);
return &proxy->base;
}
static void
detach_proxy (cairo_surface_t *source,
cairo_surface_t *proxy)
{
cairo_surface_finish (proxy);
cairo_surface_destroy (proxy);
}
static cairo_surface_t *
get_proxy (cairo_surface_t *proxy)
{
return ((struct proxy *)proxy)->image;
}
static cairo_status_t
_cairo_recording_surface_acquire_source_image (void *abstract_surface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_recording_surface_t *surface = abstract_surface;
cairo_surface_t *image, *proxy;
cairo_status_t status;
proxy = _cairo_surface_has_snapshot (abstract_surface, &proxy_backend);
if (proxy != NULL) {
*image_out = (cairo_image_surface_t *)
cairo_surface_reference (get_proxy (proxy));
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
assert (! surface->unbounded);
image = _cairo_image_surface_create_with_content (surface->base.content,
surface->extents.width,
surface->extents.height);
if (unlikely (image->status))
return image->status;
/* Handle recursion by returning future reads from the current image */
proxy = attach_proxy (abstract_surface, image);
status = _cairo_recording_surface_replay (&surface->base, image);
detach_proxy (abstract_surface, proxy);
if (unlikely (status)) {
cairo_surface_destroy (image);
return status;
}
*image_out = (cairo_image_surface_t *) image;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_recording_surface_release_source_image (void *abstract_surface,
cairo_image_surface_t *image,
void *image_extra)
{
cairo_surface_destroy (&image->base);
}
static cairo_status_t
_command_init (cairo_recording_surface_t *surface,
cairo_command_header_t *command,
cairo_command_type_t type,
cairo_operator_t op,
cairo_composite_rectangles_t *composite)
{
cairo_status_t status = CAIRO_STATUS_SUCCESS;
command->type = type;
command->op = op;
command->region = CAIRO_RECORDING_REGION_ALL;
command->extents = composite->unbounded;
command->chain = NULL;
command->index = surface->commands.num_elements;
/* steal the clip */
command->clip = NULL;
if (! _cairo_composite_rectangles_can_reduce_clip (composite,
composite->clip))
{
command->clip = composite->clip;
composite->clip = NULL;
}
return status;
}
static void
_cairo_recording_surface_break_self_copy_loop (cairo_recording_surface_t *surface)
{
cairo_surface_flush (&surface->base);
}
static cairo_status_t
_cairo_recording_surface_commit (cairo_recording_surface_t *surface,
cairo_command_header_t *command)
{
_cairo_recording_surface_break_self_copy_loop (surface);
return _cairo_array_append (&surface->commands, &command);
}
static void
_cairo_recording_surface_reset (cairo_recording_surface_t *surface)
{
/* Reset the commands and temporaries */
_cairo_recording_surface_finish (surface);
surface->bbtree.left = surface->bbtree.right = NULL;
surface->bbtree.chain = INVALID_CHAIN;
surface->indices = NULL;
surface->num_indices = 0;
_cairo_array_init (&surface->commands, sizeof (cairo_command_t *));
}
static cairo_bool_t
is_identity_recording_pattern (const cairo_pattern_t *pattern)
{
cairo_surface_t *surface;
if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE)
return FALSE;
if (!_cairo_matrix_is_identity(&pattern->matrix))
return FALSE;
surface = ((cairo_surface_pattern_t *)pattern)->surface;
return surface->backend->type == CAIRO_SURFACE_TYPE_RECORDING;
}
static cairo_int_status_t
_cairo_recording_surface_paint (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_recording_surface_t *surface = abstract_surface;
cairo_command_paint_t *command;
cairo_composite_rectangles_t composite;
TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
if (op == CAIRO_OPERATOR_CLEAR && clip == NULL) {
if (surface->optimize_clears) {
_cairo_recording_surface_reset (surface);
return CAIRO_STATUS_SUCCESS;
}
}
if (clip == NULL && surface->optimize_clears &&
(op == CAIRO_OPERATOR_SOURCE ||
(op == CAIRO_OPERATOR_OVER &&
(surface->base.is_clear || _cairo_pattern_is_opaque_solid (source)))))
{
_cairo_recording_surface_reset (surface);
if (is_identity_recording_pattern (source)) {
cairo_surface_t *src = ((cairo_surface_pattern_t *)source)->surface;
return _cairo_recording_surface_replay (src, &surface->base);
}
}
status = _cairo_composite_rectangles_init_for_paint (&composite,
&surface->base,
op, source,
clip);
if (unlikely (status))
return status;
command = malloc (sizeof (cairo_command_paint_t));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_COMPOSITE;
}
status = _command_init (surface,
&command->header, CAIRO_COMMAND_PAINT, op,
&composite);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto CLEANUP_SOURCE;
_cairo_recording_surface_destroy_bbtree (surface);
_cairo_composite_rectangles_fini (&composite);
return CAIRO_STATUS_SUCCESS;
CLEANUP_SOURCE:
_cairo_pattern_fini (&command->source.base);
CLEANUP_COMMAND:
_cairo_clip_destroy (command->header.clip);
free (command);
CLEANUP_COMPOSITE:
_cairo_composite_rectangles_fini (&composite);
return status;
}
static cairo_int_status_t
_cairo_recording_surface_mask (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_recording_surface_t *surface = abstract_surface;
cairo_command_mask_t *command;
cairo_composite_rectangles_t composite;
TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
status = _cairo_composite_rectangles_init_for_mask (&composite,
&surface->base,
op, source, mask,
clip);
if (unlikely (status))
return status;
command = malloc (sizeof (cairo_command_mask_t));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_COMPOSITE;
}
status = _command_init (surface,
&command->header, CAIRO_COMMAND_MASK, op,
&composite);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_pattern_init_snapshot (&command->mask.base, mask);
if (unlikely (status))
goto CLEANUP_SOURCE;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto CLEANUP_MASK;
_cairo_recording_surface_destroy_bbtree (surface);
_cairo_composite_rectangles_fini (&composite);
return CAIRO_STATUS_SUCCESS;
CLEANUP_MASK:
_cairo_pattern_fini (&command->mask.base);
CLEANUP_SOURCE:
_cairo_pattern_fini (&command->source.base);
CLEANUP_COMMAND:
_cairo_clip_destroy (command->header.clip);
free (command);
CLEANUP_COMPOSITE:
_cairo_composite_rectangles_fini (&composite);
return status;
}
static cairo_int_status_t
_cairo_recording_surface_stroke (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t *path,
const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_recording_surface_t *surface = abstract_surface;
cairo_command_stroke_t *command;
cairo_composite_rectangles_t composite;
TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
status = _cairo_composite_rectangles_init_for_stroke (&composite,
&surface->base,
op, source,
path, style, ctm,
clip);
if (unlikely (status))
return status;
command = malloc (sizeof (cairo_command_stroke_t));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_COMPOSITE;
}
status = _command_init (surface,
&command->header, CAIRO_COMMAND_STROKE, op,
&composite);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_path_fixed_init_copy (&command->path, path);
if (unlikely (status))
goto CLEANUP_SOURCE;
status = _cairo_stroke_style_init_copy (&command->style, style);
if (unlikely (status))
goto CLEANUP_PATH;
command->ctm = *ctm;
command->ctm_inverse = *ctm_inverse;
command->tolerance = tolerance;
command->antialias = antialias;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto CLEANUP_STYLE;
_cairo_recording_surface_destroy_bbtree (surface);
_cairo_composite_rectangles_fini (&composite);
return CAIRO_STATUS_SUCCESS;
CLEANUP_STYLE:
_cairo_stroke_style_fini (&command->style);
CLEANUP_PATH:
_cairo_path_fixed_fini (&command->path);
CLEANUP_SOURCE:
_cairo_pattern_fini (&command->source.base);
CLEANUP_COMMAND:
_cairo_clip_destroy (command->header.clip);
free (command);
CLEANUP_COMPOSITE:
_cairo_composite_rectangles_fini (&composite);
return status;
}
static cairo_int_status_t
_cairo_recording_surface_fill (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_recording_surface_t *surface = abstract_surface;
cairo_command_fill_t *command;
cairo_composite_rectangles_t composite;
TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
status = _cairo_composite_rectangles_init_for_fill (&composite,
&surface->base,
op, source, path,
clip);
if (unlikely (status))
return status;
command = malloc (sizeof (cairo_command_fill_t));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_COMPOSITE;
}
status =_command_init (surface,
&command->header, CAIRO_COMMAND_FILL, op,
&composite);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_path_fixed_init_copy (&command->path, path);
if (unlikely (status))
goto CLEANUP_SOURCE;
command->fill_rule = fill_rule;
command->tolerance = tolerance;
command->antialias = antialias;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto CLEANUP_PATH;
_cairo_recording_surface_destroy_bbtree (surface);
_cairo_composite_rectangles_fini (&composite);
return CAIRO_STATUS_SUCCESS;
CLEANUP_PATH:
_cairo_path_fixed_fini (&command->path);
CLEANUP_SOURCE:
_cairo_pattern_fini (&command->source.base);
CLEANUP_COMMAND:
_cairo_clip_destroy (command->header.clip);
free (command);
CLEANUP_COMPOSITE:
_cairo_composite_rectangles_fini (&composite);
return status;
}
static cairo_bool_t
_cairo_recording_surface_has_show_text_glyphs (void *abstract_surface)
{
return TRUE;
}
static cairo_int_status_t
_cairo_recording_surface_show_text_glyphs (void *abstract_surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const char *utf8,
int utf8_len,
cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_text_cluster_t *clusters,
int num_clusters,
cairo_text_cluster_flags_t cluster_flags,
cairo_scaled_font_t *scaled_font,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_recording_surface_t *surface = abstract_surface;
cairo_command_show_text_glyphs_t *command;
cairo_composite_rectangles_t composite;
TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
status = _cairo_composite_rectangles_init_for_glyphs (&composite,
&surface->base,
op, source,
scaled_font,
glyphs, num_glyphs,
clip,
NULL);
if (unlikely (status))
return status;
command = malloc (sizeof (cairo_command_show_text_glyphs_t));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_COMPOSITE;
}
status = _command_init (surface,
&command->header, CAIRO_COMMAND_SHOW_TEXT_GLYPHS,
op, &composite);
if (unlikely (status))
goto CLEANUP_COMMAND;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
if (unlikely (status))
goto CLEANUP_COMMAND;
command->utf8 = NULL;
command->utf8_len = utf8_len;
command->glyphs = NULL;
command->num_glyphs = num_glyphs;
command->clusters = NULL;
command->num_clusters = num_clusters;
if (utf8_len) {
command->utf8 = malloc (utf8_len);
if (unlikely (command->utf8 == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_ARRAYS;
}
memcpy (command->utf8, utf8, utf8_len);
}
if (num_glyphs) {
command->glyphs = _cairo_malloc_ab (num_glyphs, sizeof (glyphs[0]));
if (unlikely (command->glyphs == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_ARRAYS;
}
memcpy (command->glyphs, glyphs, sizeof (glyphs[0]) * num_glyphs);
}
if (num_clusters) {
command->clusters = _cairo_malloc_ab (num_clusters, sizeof (clusters[0]));
if (unlikely (command->clusters == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_ARRAYS;
}
memcpy (command->clusters, clusters, sizeof (clusters[0]) * num_clusters);
}
command->cluster_flags = cluster_flags;
command->scaled_font = cairo_scaled_font_reference (scaled_font);
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto CLEANUP_SCALED_FONT;
_cairo_composite_rectangles_fini (&composite);
return CAIRO_STATUS_SUCCESS;
CLEANUP_SCALED_FONT:
cairo_scaled_font_destroy (command->scaled_font);
CLEANUP_ARRAYS:
free (command->utf8);
free (command->glyphs);
free (command->clusters);
_cairo_pattern_fini (&command->source.base);
CLEANUP_COMMAND:
_cairo_clip_destroy (command->header.clip);
free (command);
CLEANUP_COMPOSITE:
_cairo_composite_rectangles_fini (&composite);
return status;
}
static void
_command_init_copy (cairo_recording_surface_t *surface,
cairo_command_header_t *dst,
const cairo_command_header_t *src)
{
dst->type = src->type;
dst->op = src->op;
dst->region = CAIRO_RECORDING_REGION_ALL;
dst->extents = src->extents;
dst->chain = NULL;
dst->index = surface->commands.num_elements;
dst->clip = _cairo_clip_copy (src->clip);
}
static cairo_status_t
_cairo_recording_surface_copy__paint (cairo_recording_surface_t *surface,
const cairo_command_t *src)
{
cairo_command_paint_t *command;
cairo_status_t status;
command = malloc (sizeof (*command));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err;
}
_command_init_copy (surface, &command->header, &src->header);
status = _cairo_pattern_init_copy (&command->source.base,
&src->paint.source.base);
if (unlikely (status))
goto err_command;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto err_source;
return CAIRO_STATUS_SUCCESS;
err_source:
_cairo_pattern_fini (&command->source.base);
err_command:
free(command);
err:
return status;
}
static cairo_status_t
_cairo_recording_surface_copy__mask (cairo_recording_surface_t *surface,
const cairo_command_t *src)
{
cairo_command_mask_t *command;
cairo_status_t status;
command = malloc (sizeof (*command));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err;
}
_command_init_copy (surface, &command->header, &src->header);
status = _cairo_pattern_init_copy (&command->source.base,
&src->mask.source.base);
if (unlikely (status))
goto err_command;
status = _cairo_pattern_init_copy (&command->mask.base,
&src->mask.mask.base);
if (unlikely (status))
goto err_source;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto err_mask;
return CAIRO_STATUS_SUCCESS;
err_mask:
_cairo_pattern_fini (&command->mask.base);
err_source:
_cairo_pattern_fini (&command->source.base);
err_command:
free(command);
err:
return status;
}
static cairo_status_t
_cairo_recording_surface_copy__stroke (cairo_recording_surface_t *surface,
const cairo_command_t *src)
{
cairo_command_stroke_t *command;
cairo_status_t status;
command = malloc (sizeof (*command));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err;
}
_command_init_copy (surface, &command->header, &src->header);
status = _cairo_pattern_init_copy (&command->source.base,
&src->stroke.source.base);
if (unlikely (status))
goto err_command;
status = _cairo_path_fixed_init_copy (&command->path, &src->stroke.path);
if (unlikely (status))
goto err_source;
status = _cairo_stroke_style_init_copy (&command->style,
&src->stroke.style);
if (unlikely (status))
goto err_path;
command->ctm = src->stroke.ctm;
command->ctm_inverse = src->stroke.ctm_inverse;
command->tolerance = src->stroke.tolerance;
command->antialias = src->stroke.antialias;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto err_style;
return CAIRO_STATUS_SUCCESS;
err_style:
_cairo_stroke_style_fini (&command->style);
err_path:
_cairo_path_fixed_fini (&command->path);
err_source:
_cairo_pattern_fini (&command->source.base);
err_command:
free(command);
err:
return status;
}
static cairo_status_t
_cairo_recording_surface_copy__fill (cairo_recording_surface_t *surface,
const cairo_command_t *src)
{
cairo_command_fill_t *command;
cairo_status_t status;
command = malloc (sizeof (*command));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err;
}
_command_init_copy (surface, &command->header, &src->header);
status = _cairo_pattern_init_copy (&command->source.base,
&src->fill.source.base);
if (unlikely (status))
goto err_command;
status = _cairo_path_fixed_init_copy (&command->path, &src->fill.path);
if (unlikely (status))
goto err_source;
command->fill_rule = src->fill.fill_rule;
command->tolerance = src->fill.tolerance;
command->antialias = src->fill.antialias;
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto err_path;
return CAIRO_STATUS_SUCCESS;
err_path:
_cairo_path_fixed_fini (&command->path);
err_source:
_cairo_pattern_fini (&command->source.base);
err_command:
free(command);
err:
return status;
}
static cairo_status_t
_cairo_recording_surface_copy__glyphs (cairo_recording_surface_t *surface,
const cairo_command_t *src)
{
cairo_command_show_text_glyphs_t *command;
cairo_status_t status;
command = malloc (sizeof (*command));
if (unlikely (command == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err;
}
_command_init_copy (surface, &command->header, &src->header);
status = _cairo_pattern_init_copy (&command->source.base,
&src->show_text_glyphs.source.base);
if (unlikely (status))
goto err_command;
command->utf8 = NULL;
command->utf8_len = src->show_text_glyphs.utf8_len;
command->glyphs = NULL;
command->num_glyphs = src->show_text_glyphs.num_glyphs;
command->clusters = NULL;
command->num_clusters = src->show_text_glyphs.num_clusters;
if (command->utf8_len) {
command->utf8 = malloc (command->utf8_len);
if (unlikely (command->utf8 == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err_arrays;
}
memcpy (command->utf8, src->show_text_glyphs.utf8, command->utf8_len);
}
if (command->num_glyphs) {
command->glyphs = _cairo_malloc_ab (command->num_glyphs,
sizeof (command->glyphs[0]));
if (unlikely (command->glyphs == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err_arrays;
}
memcpy (command->glyphs, src->show_text_glyphs.glyphs,
sizeof (command->glyphs[0]) * command->num_glyphs);
}
if (command->num_clusters) {
command->clusters = _cairo_malloc_ab (command->num_clusters,
sizeof (command->clusters[0]));
if (unlikely (command->clusters == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto err_arrays;
}
memcpy (command->clusters, src->show_text_glyphs.clusters,
sizeof (command->clusters[0]) * command->num_clusters);
}
command->cluster_flags = src->show_text_glyphs.cluster_flags;
command->scaled_font =
cairo_scaled_font_reference (src->show_text_glyphs.scaled_font);
status = _cairo_recording_surface_commit (surface, &command->header);
if (unlikely (status))
goto err_arrays;
return CAIRO_STATUS_SUCCESS;
err_arrays:
free (command->utf8);
free (command->glyphs);
free (command->clusters);
_cairo_pattern_fini (&command->source.base);
err_command:
free(command);
err:
return status;
}
static cairo_status_t
_cairo_recording_surface_copy (cairo_recording_surface_t *dst,
cairo_recording_surface_t *src)
{
cairo_command_t **elements;
int i, num_elements;
cairo_status_t status;
elements = _cairo_array_index (&src->commands, 0);
num_elements = src->commands.num_elements;
for (i = 0; i < num_elements; i++) {
const cairo_command_t *command = elements[i];
switch (command->header.type) {
case CAIRO_COMMAND_PAINT:
status = _cairo_recording_surface_copy__paint (dst, command);
break;
case CAIRO_COMMAND_MASK:
status = _cairo_recording_surface_copy__mask (dst, command);
break;
case CAIRO_COMMAND_STROKE:
status = _cairo_recording_surface_copy__stroke (dst, command);
break;
case CAIRO_COMMAND_FILL:
status = _cairo_recording_surface_copy__fill (dst, command);
break;
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
status = _cairo_recording_surface_copy__glyphs (dst, command);
break;
default:
ASSERT_NOT_REACHED;
}
if (unlikely (status))
return status;
}
return CAIRO_STATUS_SUCCESS;
}
/**
* _cairo_recording_surface_snapshot:
* @surface: a #cairo_surface_t which must be a recording surface
*
* Make an immutable copy of @surface. It is an error to call a
* surface-modifying function on the result of this function.
*
* 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.
**/
static cairo_surface_t *
_cairo_recording_surface_snapshot (void *abstract_other)
{
cairo_recording_surface_t *other = abstract_other;
cairo_recording_surface_t *surface;
cairo_status_t status;
surface = malloc (sizeof (cairo_recording_surface_t));
if (unlikely (surface == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&surface->base,
&cairo_recording_surface_backend,
NULL, /* device */
other->base.content);
surface->extents_pixels = other->extents_pixels;
surface->extents = other->extents;
surface->unbounded = other->unbounded;
surface->base.is_clear = other->base.is_clear;
surface->bbtree.left = surface->bbtree.right = NULL;
surface->bbtree.chain = INVALID_CHAIN;
surface->indices = NULL;
surface->num_indices = 0;
surface->optimize_clears = TRUE;
_cairo_array_init (&surface->commands, sizeof (cairo_command_t *));
status = _cairo_recording_surface_copy (surface, other);
if (unlikely (status)) {
cairo_surface_destroy (&surface->base);
return _cairo_surface_create_in_error (status);
}
return &surface->base;
}
static cairo_bool_t
_cairo_recording_surface_get_extents (void *abstract_surface,
cairo_rectangle_int_t *rectangle)
{
cairo_recording_surface_t *surface = abstract_surface;
if (surface->unbounded)
return FALSE;
*rectangle = surface->extents;
return TRUE;
}
static const cairo_surface_backend_t cairo_recording_surface_backend = {
CAIRO_SURFACE_TYPE_RECORDING,
_cairo_recording_surface_finish,
_cairo_default_context_create,
_cairo_recording_surface_create_similar,
NULL, /* create similar image */
NULL, /* map to image */
NULL, /* unmap image */
_cairo_surface_default_source,
_cairo_recording_surface_acquire_source_image,
_cairo_recording_surface_release_source_image,
_cairo_recording_surface_snapshot,
NULL, /* copy_page */
NULL, /* show_page */
_cairo_recording_surface_get_extents,
NULL, /* get_font_options */
NULL, /* flush */
NULL, /* mark_dirty_rectangle */
/* Here are the 5 basic drawing operations, (which are in some
* sense the only things that cairo_recording_surface should need to
* implement). However, we implement the more generic show_text_glyphs
* instead of show_glyphs. One or the other is eough. */
_cairo_recording_surface_paint,
_cairo_recording_surface_mask,
_cairo_recording_surface_stroke,
_cairo_recording_surface_fill,
NULL, /* fill-stroke */
NULL,
_cairo_recording_surface_has_show_text_glyphs,
_cairo_recording_surface_show_text_glyphs,
};
cairo_int_status_t
_cairo_recording_surface_get_path (cairo_surface_t *abstract_surface,
cairo_path_fixed_t *path)
{
cairo_recording_surface_t *surface;
cairo_command_t **elements;
int i, num_elements;
cairo_int_status_t status;
if (unlikely (abstract_surface->status))
return abstract_surface->status;
surface = (cairo_recording_surface_t *) abstract_surface;
status = CAIRO_STATUS_SUCCESS;
num_elements = surface->commands.num_elements;
elements = _cairo_array_index (&surface->commands, 0);
for (i = 0; i < num_elements; i++) {
cairo_command_t *command = elements[i];
switch (command->header.type) {
case CAIRO_COMMAND_PAINT:
case CAIRO_COMMAND_MASK:
status = CAIRO_INT_STATUS_UNSUPPORTED;
break;
case CAIRO_COMMAND_STROKE:
{
cairo_traps_t traps;
_cairo_traps_init (&traps);
/* XXX call cairo_stroke_to_path() when that is implemented */
status = _cairo_path_fixed_stroke_polygon_to_traps (&command->stroke.path,
&command->stroke.style,
&command->stroke.ctm,
&command->stroke.ctm_inverse,
command->stroke.tolerance,
&traps);
if (status == CAIRO_INT_STATUS_SUCCESS)
status = _cairo_traps_path (&traps, path);
_cairo_traps_fini (&traps);
break;
}
case CAIRO_COMMAND_FILL:
{
status = _cairo_path_fixed_append (path,
&command->fill.path,
0, 0);
break;
}
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
{
status = _cairo_scaled_font_glyph_path (command->show_text_glyphs.scaled_font,
command->show_text_glyphs.glyphs,
command->show_text_glyphs.num_glyphs,
path);
break;
}
default:
ASSERT_NOT_REACHED;
}
if (unlikely (status))
break;
}
return status;
}
static int
_cairo_recording_surface_get_visible_commands (cairo_recording_surface_t *surface,
const cairo_rectangle_int_t *extents)
{
unsigned int num_visible, *indices;
cairo_box_t box;
if (surface->commands.num_elements == 0)
return 0;
_cairo_box_from_rectangle (&box, extents);
if (surface->bbtree.chain == INVALID_CHAIN)
_cairo_recording_surface_create_bbtree (surface);
indices = surface->indices;
bbtree_foreach_mark_visible (&surface->bbtree, &box, &indices);
num_visible = indices - surface->indices;
if (num_visible > 1)
sort_indices (surface->indices, num_visible);
return num_visible;
}
static void
_cairo_recording_surface_merge_source_attributes (cairo_recording_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *source)
{
if (op != CAIRO_OPERATOR_OVER)
surface->has_only_op_over = FALSE;
if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
cairo_surface_pattern_t *surf_pat = (cairo_surface_pattern_t *) source;
cairo_surface_t *surf = surf_pat->surface;
cairo_surface_t *free_me = NULL;
if (_cairo_surface_is_snapshot (surf))
free_me = surf = _cairo_surface_snapshot_get_target (surf);
if (surf->type == CAIRO_SURFACE_TYPE_RECORDING) {
cairo_recording_surface_t *rec_surf = (cairo_recording_surface_t *) surf;
if (! _cairo_recording_surface_has_only_bilevel_alpha (rec_surf))
surface->has_bilevel_alpha = FALSE;
if (! _cairo_recording_surface_has_only_op_over (rec_surf))
surface->has_only_op_over = FALSE;
} else if (surf->type == CAIRO_SURFACE_TYPE_IMAGE) {
cairo_image_surface_t *img_surf = (cairo_image_surface_t *) surf;
if (_cairo_image_analyze_transparency (img_surf) == CAIRO_IMAGE_HAS_ALPHA)
surface->has_bilevel_alpha = FALSE;
} else {
if (!_cairo_pattern_is_clear (source) && !_cairo_pattern_is_opaque (source, NULL))
surface->has_bilevel_alpha = FALSE;
}
cairo_surface_destroy (free_me);
return;
} else if (source->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
cairo_surface_t *image;
cairo_surface_t *raster;
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
raster = _cairo_raster_source_pattern_acquire (source, image, NULL);
cairo_surface_destroy (image);
if (raster) {
if (raster->type == CAIRO_SURFACE_TYPE_IMAGE) {
if (_cairo_image_analyze_transparency ((cairo_image_surface_t *)raster) == CAIRO_IMAGE_HAS_ALPHA)
surface->has_bilevel_alpha = FALSE;
}
_cairo_raster_source_pattern_release (source, raster);
if (raster->type == CAIRO_SURFACE_TYPE_IMAGE)
return;
}
}
if (!_cairo_pattern_is_clear (source) && !_cairo_pattern_is_opaque (source, NULL))
surface->has_bilevel_alpha = FALSE;
}
static cairo_status_t
_cairo_recording_surface_replay_internal (cairo_recording_surface_t *surface,
const cairo_rectangle_int_t *surface_extents,
const cairo_matrix_t *surface_transform,
cairo_surface_t *target,
const cairo_clip_t *target_clip,
cairo_recording_replay_type_t type,
cairo_recording_region_type_t region)
{
cairo_surface_wrapper_t wrapper;
cairo_command_t **elements;
cairo_bool_t replay_all =
type == CAIRO_RECORDING_REPLAY &&
region == CAIRO_RECORDING_REGION_ALL;
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_rectangle_int_t extents;
cairo_bool_t use_indices = FALSE;
const cairo_rectangle_int_t *r;
unsigned int i, num_elements;
if (unlikely (surface->base.status))
return surface->base.status;
if (unlikely (target->status))
return target->status;
if (unlikely (surface->base.finished))
return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
if (surface->base.is_clear)
return CAIRO_STATUS_SUCCESS;
assert (_cairo_surface_is_recording (&surface->base));
_cairo_surface_wrapper_init (&wrapper, target);
if (surface_extents)
_cairo_surface_wrapper_intersect_extents (&wrapper, surface_extents);
r = &_cairo_unbounded_rectangle;
if (! surface->unbounded) {
_cairo_surface_wrapper_intersect_extents (&wrapper, &surface->extents);
r = &surface->extents;
}
_cairo_surface_wrapper_set_inverse_transform (&wrapper, surface_transform);
_cairo_surface_wrapper_set_clip (&wrapper, target_clip);
/* Compute the extents of the target clip in recorded device space */
if (! _cairo_surface_wrapper_get_target_extents (&wrapper, &extents))
goto done;
surface->has_bilevel_alpha = TRUE;
surface->has_only_op_over = TRUE;
num_elements = surface->commands.num_elements;
elements = _cairo_array_index (&surface->commands, 0);
if (extents.width < r->width || extents.height < r->height) {
num_elements =
_cairo_recording_surface_get_visible_commands (surface, &extents);
use_indices = num_elements != surface->commands.num_elements;
}
for (i = 0; i < num_elements; i++) {
cairo_command_t *command = elements[use_indices ? surface->indices[i] : i];
if (! replay_all && command->header.region != region)
continue;
if (! _cairo_rectangle_intersects (&extents, &command->header.extents))
continue;
switch (command->header.type) {
case CAIRO_COMMAND_PAINT:
status = _cairo_surface_wrapper_paint (&wrapper,
command->header.op,
&command->paint.source.base,
command->header.clip);
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->paint.source.base);
}
break;
case CAIRO_COMMAND_MASK:
status = _cairo_surface_wrapper_mask (&wrapper,
command->header.op,
&command->mask.source.base,
&command->mask.mask.base,
command->header.clip);
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->mask.source.base);
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->mask.mask.base);
}
break;
case CAIRO_COMMAND_STROKE:
status = _cairo_surface_wrapper_stroke (&wrapper,
command->header.op,
&command->stroke.source.base,
&command->stroke.path,
&command->stroke.style,
&command->stroke.ctm,
&command->stroke.ctm_inverse,
command->stroke.tolerance,
command->stroke.antialias,
command->header.clip);
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->stroke.source.base);
}
break;
case CAIRO_COMMAND_FILL:
status = CAIRO_INT_STATUS_UNSUPPORTED;
if (_cairo_surface_wrapper_has_fill_stroke (&wrapper)) {
cairo_command_t *stroke_command;
stroke_command = NULL;
if (type != CAIRO_RECORDING_CREATE_REGIONS && i < num_elements - 1)
stroke_command = elements[i + 1];
if (stroke_command != NULL &&
type == CAIRO_RECORDING_REPLAY &&
region != CAIRO_RECORDING_REGION_ALL)
{
if (stroke_command->header.region != region)
stroke_command = NULL;
}
if (stroke_command != NULL &&
stroke_command->header.type == CAIRO_COMMAND_STROKE &&
_cairo_path_fixed_equal (&command->fill.path,
&stroke_command->stroke.path) &&
_cairo_clip_equal (command->header.clip,
stroke_command->header.clip))
{
status = _cairo_surface_wrapper_fill_stroke (&wrapper,
command->header.op,
&command->fill.source.base,
command->fill.fill_rule,
command->fill.tolerance,
command->fill.antialias,
&command->fill.path,
stroke_command->header.op,
&stroke_command->stroke.source.base,
&stroke_command->stroke.style,
&stroke_command->stroke.ctm,
&stroke_command->stroke.ctm_inverse,
stroke_command->stroke.tolerance,
stroke_command->stroke.antialias,
command->header.clip);
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->fill.source.base);
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->stroke.source.base);
}
i++;
}
}
if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
status = _cairo_surface_wrapper_fill (&wrapper,
command->header.op,
&command->fill.source.base,
&command->fill.path,
command->fill.fill_rule,
command->fill.tolerance,
command->fill.antialias,
command->header.clip);
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->fill.source.base);
}
}
break;
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
status = _cairo_surface_wrapper_show_text_glyphs (&wrapper,
command->header.op,
&command->show_text_glyphs.source.base,
command->show_text_glyphs.utf8, command->show_text_glyphs.utf8_len,
command->show_text_glyphs.glyphs, command->show_text_glyphs.num_glyphs,
command->show_text_glyphs.clusters, command->show_text_glyphs.num_clusters,
command->show_text_glyphs.cluster_flags,
command->show_text_glyphs.scaled_font,
command->header.clip);
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
_cairo_recording_surface_merge_source_attributes (surface,
command->header.op,
&command->show_text_glyphs.source.base);
}
break;
default:
ASSERT_NOT_REACHED;
}
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
if (status == CAIRO_INT_STATUS_SUCCESS) {
command->header.region = CAIRO_RECORDING_REGION_NATIVE;
} else if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK) {
command->header.region = CAIRO_RECORDING_REGION_IMAGE_FALLBACK;
status = CAIRO_INT_STATUS_SUCCESS;
} else {
assert (_cairo_int_status_is_error (status));
}
}
if (unlikely (status))
break;
}
done:
_cairo_surface_wrapper_fini (&wrapper);
return _cairo_surface_set_error (&surface->base, status);
}
cairo_status_t
_cairo_recording_surface_replay_one (cairo_recording_surface_t *surface,
long unsigned index,
cairo_surface_t *target)
{
cairo_surface_wrapper_t wrapper;
cairo_command_t **elements, *command;
cairo_int_status_t status;
if (unlikely (surface->base.status))
return surface->base.status;
if (unlikely (target->status))
return target->status;
if (unlikely (surface->base.finished))
return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
assert (_cairo_surface_is_recording (&surface->base));
/* XXX
* Use a surface wrapper because we may want to do transformed
* replay in the future.
*/
_cairo_surface_wrapper_init (&wrapper, target);
if (index > surface->commands.num_elements)
return _cairo_error (CAIRO_STATUS_READ_ERROR);
elements = _cairo_array_index (&surface->commands, 0);
command = elements[index];
switch (command->header.type) {
case CAIRO_COMMAND_PAINT:
status = _cairo_surface_wrapper_paint (&wrapper,
command->header.op,
&command->paint.source.base,
command->header.clip);
break;
case CAIRO_COMMAND_MASK:
status = _cairo_surface_wrapper_mask (&wrapper,
command->header.op,
&command->mask.source.base,
&command->mask.mask.base,
command->header.clip);
break;
case CAIRO_COMMAND_STROKE:
status = _cairo_surface_wrapper_stroke (&wrapper,
command->header.op,
&command->stroke.source.base,
&command->stroke.path,
&command->stroke.style,
&command->stroke.ctm,
&command->stroke.ctm_inverse,
command->stroke.tolerance,
command->stroke.antialias,
command->header.clip);
break;
case CAIRO_COMMAND_FILL:
status = _cairo_surface_wrapper_fill (&wrapper,
command->header.op,
&command->fill.source.base,
&command->fill.path,
command->fill.fill_rule,
command->fill.tolerance,
command->fill.antialias,
command->header.clip);
break;
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
status = _cairo_surface_wrapper_show_text_glyphs (&wrapper,
command->header.op,
&command->show_text_glyphs.source.base,
command->show_text_glyphs.utf8, command->show_text_glyphs.utf8_len,
command->show_text_glyphs.glyphs, command->show_text_glyphs.num_glyphs,
command->show_text_glyphs.clusters, command->show_text_glyphs.num_clusters,
command->show_text_glyphs.cluster_flags,
command->show_text_glyphs.scaled_font,
command->header.clip);
break;
default:
ASSERT_NOT_REACHED;
}
_cairo_surface_wrapper_fini (&wrapper);
return _cairo_surface_set_error (&surface->base, status);
}
/**
* _cairo_recording_surface_replay:
* @surface: the #cairo_recording_surface_t
* @target: a target #cairo_surface_t onto which to replay the operations
* @width_pixels: width of the surface, in pixels
* @height_pixels: height of the surface, in pixels
*
* A recording surface can be "replayed" against any target surface,
* after which the results in target will be identical to the results
* that would have been obtained if the original operations applied to
* the recording surface had instead been applied to the target surface.
**/
cairo_status_t
_cairo_recording_surface_replay (cairo_surface_t *surface,
cairo_surface_t *target)
{
return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface, NULL, NULL,
target, NULL,
CAIRO_RECORDING_REPLAY,
CAIRO_RECORDING_REGION_ALL);
}
cairo_status_t
_cairo_recording_surface_replay_with_clip (cairo_surface_t *surface,
const cairo_matrix_t *surface_transform,
cairo_surface_t *target,
const cairo_clip_t *target_clip)
{
return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface, NULL, surface_transform,
target, target_clip,
CAIRO_RECORDING_REPLAY,
CAIRO_RECORDING_REGION_ALL);
}
/* Replay recording to surface. When the return status of each operation is
* one of %CAIRO_STATUS_SUCCESS, %CAIRO_INT_STATUS_UNSUPPORTED, or
* %CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY the status of each operation
* will be stored in the recording surface. Any other status will abort the
* replay and return the status.
*/
cairo_status_t
_cairo_recording_surface_replay_and_create_regions (cairo_surface_t *surface,
cairo_surface_t *target)
{
return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface, NULL, NULL,
target, NULL,
CAIRO_RECORDING_CREATE_REGIONS,
CAIRO_RECORDING_REGION_ALL);
}
cairo_status_t
_cairo_recording_surface_replay_region (cairo_surface_t *surface,
const cairo_rectangle_int_t *surface_extents,
cairo_surface_t *target,
cairo_recording_region_type_t region)
{
return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface,
surface_extents, NULL,
target, NULL,
CAIRO_RECORDING_REPLAY,
region);
}
static cairo_status_t
_recording_surface_get_ink_bbox (cairo_recording_surface_t *surface,
cairo_box_t *bbox,
const cairo_matrix_t *transform)
{
cairo_surface_t *null_surface;
cairo_surface_t *analysis_surface;
cairo_status_t status;
null_surface = _cairo_null_surface_create (surface->base.content);
analysis_surface = _cairo_analysis_surface_create (null_surface);
cairo_surface_destroy (null_surface);
status = analysis_surface->status;
if (unlikely (status))
return status;
if (transform != NULL)
_cairo_analysis_surface_set_ctm (analysis_surface, transform);
status = _cairo_recording_surface_replay (&surface->base, analysis_surface);
_cairo_analysis_surface_get_bounding_box (analysis_surface, bbox);
cairo_surface_destroy (analysis_surface);
return status;
}
/**
* cairo_recording_surface_ink_extents:
* @surface: a #cairo_recording_surface_t
* @x0: the x-coordinate of the top-left of the ink bounding box
* @y0: the y-coordinate of the top-left of the ink bounding box
* @width: the width of the ink bounding box
* @height: the height of the ink bounding box
*
* Measures the extents of the operations stored within the recording-surface.
* This is useful to compute the required size of an image surface (or
* equivalent) into which to replay the full sequence of drawing operations.
*
* Since: 1.10
**/
void
cairo_recording_surface_ink_extents (cairo_surface_t *surface,
double *x0,
double *y0,
double *width,
double *height)
{
cairo_status_t status;
cairo_box_t bbox;
memset (&bbox, 0, sizeof (bbox));
if (surface->status || ! _cairo_surface_is_recording (surface)) {
_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
goto DONE;
}
status = _recording_surface_get_ink_bbox ((cairo_recording_surface_t *) surface,
&bbox,
NULL);
if (unlikely (status))
status = _cairo_surface_set_error (surface, status);
DONE:
if (x0)
*x0 = _cairo_fixed_to_double (bbox.p1.x);
if (y0)
*y0 = _cairo_fixed_to_double (bbox.p1.y);
if (width)
*width = _cairo_fixed_to_double (bbox.p2.x - bbox.p1.x);
if (height)
*height = _cairo_fixed_to_double (bbox.p2.y - bbox.p1.y);
}
cairo_status_t
_cairo_recording_surface_get_bbox (cairo_recording_surface_t *surface,
cairo_box_t *bbox,
const cairo_matrix_t *transform)
{
if (! surface->unbounded) {
_cairo_box_from_rectangle (bbox, &surface->extents);
if (transform != NULL)
_cairo_matrix_transform_bounding_box_fixed (transform, bbox, NULL);
return CAIRO_STATUS_SUCCESS;
}
return _recording_surface_get_ink_bbox (surface, bbox, transform);
}
cairo_status_t
_cairo_recording_surface_get_ink_bbox (cairo_recording_surface_t *surface,
cairo_box_t *bbox,
const cairo_matrix_t *transform)
{
return _recording_surface_get_ink_bbox (surface, bbox, transform);
}
/**
* cairo_recording_surface_get_extents:
* @surface: a #cairo_recording_surface_t
* @extents: the #cairo_rectangle_t to be assigned the extents
*
* Get the extents of the recording-surface.
*
* Return value: %TRUE if the surface is bounded, of recording type, and
* not in an error state, otherwise %FALSE
*
* Since: 1.12
**/
cairo_bool_t
cairo_recording_surface_get_extents (cairo_surface_t *surface,
cairo_rectangle_t *extents)
{
cairo_recording_surface_t *record;
if (surface->status || ! _cairo_surface_is_recording (surface)) {
_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
return FALSE;
}
record = (cairo_recording_surface_t *)surface;
if (record->unbounded)
return FALSE;
*extents = record->extents_pixels;
return TRUE;
}
cairo_bool_t
_cairo_recording_surface_has_only_bilevel_alpha (cairo_recording_surface_t *surface)
{
return surface->has_bilevel_alpha;
}
cairo_bool_t
_cairo_recording_surface_has_only_op_over (cairo_recording_surface_t *surface)
{
return surface->has_only_op_over;
}