mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
synced 2026-02-27 16:20:38 +01:00
7146358250
The problem is _cairo_recording_surface_replay_and_create_regions() stores the cairo_recording_region_type_t in the same structure as the recording commands. This does not work well when the recording surface is used as source by multiple surfaces Fix this by moving the cairo_recording_region_type_t into a separate struct cairo_recording_regions_array_t. This struct is stored in a list that allows multiple create regions results to be store in the surface. The new function _cairo_recording_surface_region_array_attach() is used to create a new cairo_recording_regions_array_t, attach it to the recording surface and return a unique region id. The _cairo_recording_surface_replay_and_create_regions() and _cairo_recording_surface_replay_region() functions use this region id to identify the cairo_recording_regions_array_t. To handle nested recording surfaces, when replaying a recording, the region id is passed to the target as an extra parameter in the surface pattern. The wrapper surface makes a temporary copy of the pattern to ensure the snapshot pattern in the recording surface is not modified. cairo_recording_regions_array_t has a reference count so the target can hold on to the cairo_recording_regions_array_t after the paginated surface has called _cairo_recording_surface_region_array_remove().
711 lines
21 KiB
C
711 lines
21 KiB
C
/* -*- 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
|
|
* Copyright © 2009 Chris Wilson
|
|
*
|
|
* 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):
|
|
* Chris Wilson <chris@chris-wilson.co.uk>
|
|
*/
|
|
|
|
#include "cairoint.h"
|
|
|
|
#include "cairo-clip-inline.h"
|
|
#include "cairo-error-private.h"
|
|
#include "cairo-pattern-private.h"
|
|
#include "cairo-surface-wrapper-private.h"
|
|
|
|
/* A collection of routines to facilitate surface wrapping */
|
|
|
|
static void
|
|
_copy_transformed_pattern (cairo_pattern_t *pattern,
|
|
const cairo_pattern_t *original,
|
|
const cairo_matrix_t *ctm_inverse,
|
|
unsigned int region_id)
|
|
{
|
|
_cairo_pattern_init_static_copy (pattern, original);
|
|
|
|
if (! _cairo_matrix_is_identity (ctm_inverse))
|
|
_cairo_pattern_transform (pattern, ctm_inverse);
|
|
|
|
if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
|
|
cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
|
|
surface_pattern->region_array_id = region_id;
|
|
}
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_acquire_source_image (cairo_surface_wrapper_t *wrapper,
|
|
cairo_image_surface_t **image_out,
|
|
void **image_extra)
|
|
{
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
return _cairo_surface_acquire_source_image (wrapper->target,
|
|
image_out, image_extra);
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_release_source_image (cairo_surface_wrapper_t *wrapper,
|
|
cairo_image_surface_t *image,
|
|
void *image_extra)
|
|
{
|
|
_cairo_surface_release_source_image (wrapper->target, image, image_extra);
|
|
}
|
|
|
|
static void
|
|
_cairo_surface_wrapper_get_transform (cairo_surface_wrapper_t *wrapper,
|
|
cairo_matrix_t *m)
|
|
{
|
|
cairo_matrix_init_identity (m);
|
|
|
|
if (! _cairo_matrix_is_identity (&wrapper->transform))
|
|
cairo_matrix_multiply (m, &wrapper->transform, m);
|
|
|
|
if (! _cairo_matrix_is_identity (&wrapper->target->device_transform))
|
|
cairo_matrix_multiply (m, &wrapper->target->device_transform, m);
|
|
}
|
|
|
|
static void
|
|
_cairo_surface_wrapper_get_inverse_transform (cairo_surface_wrapper_t *wrapper,
|
|
cairo_matrix_t *m)
|
|
{
|
|
cairo_matrix_init_identity (m);
|
|
|
|
if (! _cairo_matrix_is_identity (&wrapper->target->device_transform_inverse))
|
|
cairo_matrix_multiply (m, &wrapper->target->device_transform_inverse, m);
|
|
|
|
if (! _cairo_matrix_is_identity (&wrapper->transform)) {
|
|
cairo_matrix_t inv;
|
|
cairo_status_t status;
|
|
|
|
inv = wrapper->transform;
|
|
status = cairo_matrix_invert (&inv);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
cairo_matrix_multiply (m, &inv, m);
|
|
}
|
|
}
|
|
|
|
static cairo_clip_t *
|
|
_cairo_surface_wrapper_get_clip (cairo_surface_wrapper_t *wrapper,
|
|
const cairo_clip_t *clip)
|
|
{
|
|
cairo_clip_t *copy;
|
|
cairo_matrix_t m;
|
|
|
|
copy = _cairo_clip_copy (clip);
|
|
if (wrapper->has_extents) {
|
|
copy = _cairo_clip_intersect_rectangle (copy, &wrapper->extents);
|
|
}
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
copy = _cairo_clip_transform (copy, &m);
|
|
if (wrapper->clip)
|
|
copy = _cairo_clip_intersect_clip (copy, wrapper->clip);
|
|
|
|
return copy;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_paint (cairo_surface_wrapper_t *wrapper,
|
|
cairo_operator_t op,
|
|
const cairo_pattern_t *source,
|
|
unsigned int source_region_id,
|
|
const cairo_clip_t *clip)
|
|
{
|
|
cairo_status_t status;
|
|
cairo_clip_t *dev_clip;
|
|
cairo_pattern_union_t source_copy;
|
|
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
|
|
if (_cairo_clip_is_all_clipped (dev_clip))
|
|
return CAIRO_INT_STATUS_NOTHING_TO_DO;
|
|
|
|
if (wrapper->needs_transform || source_region_id != 0) {
|
|
cairo_matrix_t m;
|
|
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
|
|
status = cairo_matrix_invert (&m);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
_copy_transformed_pattern (&source_copy.base, source, &m, source_region_id);
|
|
source = &source_copy.base;
|
|
}
|
|
|
|
status = _cairo_surface_paint (wrapper->target, op, source, dev_clip);
|
|
|
|
_cairo_clip_destroy (dev_clip);
|
|
return status;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_mask (cairo_surface_wrapper_t *wrapper,
|
|
cairo_operator_t op,
|
|
const cairo_pattern_t *source,
|
|
unsigned int source_region_id,
|
|
const cairo_pattern_t *mask,
|
|
unsigned int mask_region_id,
|
|
const cairo_clip_t *clip)
|
|
{
|
|
cairo_status_t status;
|
|
cairo_clip_t *dev_clip;
|
|
cairo_pattern_union_t source_copy;
|
|
cairo_pattern_union_t mask_copy;
|
|
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
|
|
if (_cairo_clip_is_all_clipped (dev_clip))
|
|
return CAIRO_INT_STATUS_NOTHING_TO_DO;
|
|
|
|
if (wrapper->needs_transform || source_region_id != 0 || mask_region_id != 0) {
|
|
cairo_matrix_t m;
|
|
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
|
|
status = cairo_matrix_invert (&m);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
_copy_transformed_pattern (&source_copy.base, source, &m, source_region_id);
|
|
source = &source_copy.base;
|
|
|
|
_copy_transformed_pattern (&mask_copy.base, mask, &m, mask_region_id);
|
|
mask = &mask_copy.base;
|
|
}
|
|
|
|
status = _cairo_surface_mask (wrapper->target, op, source, mask, dev_clip);
|
|
|
|
_cairo_clip_destroy (dev_clip);
|
|
return status;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_stroke (cairo_surface_wrapper_t *wrapper,
|
|
cairo_operator_t op,
|
|
const cairo_pattern_t *source,
|
|
unsigned int source_region_id,
|
|
const cairo_path_fixed_t *path,
|
|
const cairo_stroke_style_t *stroke_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_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
|
|
cairo_clip_t *dev_clip;
|
|
cairo_matrix_t dev_ctm = *ctm;
|
|
cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
|
|
cairo_pattern_union_t source_copy;
|
|
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
|
|
if (_cairo_clip_is_all_clipped (dev_clip))
|
|
return CAIRO_INT_STATUS_NOTHING_TO_DO;
|
|
|
|
if (wrapper->needs_transform || source_region_id != 0) {
|
|
cairo_matrix_t m;
|
|
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
|
|
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
|
|
if (unlikely (status))
|
|
goto FINISH;
|
|
|
|
_cairo_path_fixed_transform (&path_copy, &m);
|
|
dev_path = &path_copy;
|
|
|
|
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
|
|
|
|
status = cairo_matrix_invert (&m);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
|
|
|
|
_copy_transformed_pattern (&source_copy.base, source, &m, source_region_id);
|
|
source = &source_copy.base;
|
|
}
|
|
|
|
status = _cairo_surface_stroke (wrapper->target, op, source,
|
|
dev_path, stroke_style,
|
|
&dev_ctm, &dev_ctm_inverse,
|
|
tolerance, antialias,
|
|
dev_clip);
|
|
|
|
FINISH:
|
|
if (dev_path != path)
|
|
_cairo_path_fixed_fini (dev_path);
|
|
_cairo_clip_destroy (dev_clip);
|
|
return status;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_fill_stroke (cairo_surface_wrapper_t *wrapper,
|
|
cairo_operator_t fill_op,
|
|
const cairo_pattern_t *fill_source,
|
|
unsigned int fill_region_id,
|
|
cairo_fill_rule_t fill_rule,
|
|
double fill_tolerance,
|
|
cairo_antialias_t fill_antialias,
|
|
const cairo_path_fixed_t *path,
|
|
cairo_operator_t stroke_op,
|
|
const cairo_pattern_t *stroke_source,
|
|
unsigned int stroke_region_id,
|
|
const cairo_stroke_style_t *stroke_style,
|
|
const cairo_matrix_t *stroke_ctm,
|
|
const cairo_matrix_t *stroke_ctm_inverse,
|
|
double stroke_tolerance,
|
|
cairo_antialias_t stroke_antialias,
|
|
const cairo_clip_t *clip)
|
|
{
|
|
cairo_status_t status;
|
|
cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *)path;
|
|
cairo_matrix_t dev_ctm = *stroke_ctm;
|
|
cairo_matrix_t dev_ctm_inverse = *stroke_ctm_inverse;
|
|
cairo_clip_t *dev_clip;
|
|
cairo_pattern_union_t stroke_source_copy;
|
|
cairo_pattern_union_t fill_source_copy;
|
|
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
|
|
if (_cairo_clip_is_all_clipped (dev_clip))
|
|
return CAIRO_INT_STATUS_NOTHING_TO_DO;
|
|
|
|
if (wrapper->needs_transform || fill_region_id != 0 || stroke_region_id != 0) {
|
|
cairo_matrix_t m;
|
|
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
|
|
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
|
|
if (unlikely (status))
|
|
goto FINISH;
|
|
|
|
_cairo_path_fixed_transform (&path_copy, &m);
|
|
dev_path = &path_copy;
|
|
|
|
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
|
|
|
|
status = cairo_matrix_invert (&m);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
|
|
|
|
_copy_transformed_pattern (&stroke_source_copy.base, stroke_source, &m, fill_region_id);
|
|
stroke_source = &stroke_source_copy.base;
|
|
|
|
_copy_transformed_pattern (&fill_source_copy.base, fill_source, &m, stroke_region_id);
|
|
fill_source = &fill_source_copy.base;
|
|
}
|
|
|
|
status = _cairo_surface_fill_stroke (wrapper->target,
|
|
fill_op, fill_source, fill_rule,
|
|
fill_tolerance, fill_antialias,
|
|
dev_path,
|
|
stroke_op, stroke_source,
|
|
stroke_style,
|
|
&dev_ctm, &dev_ctm_inverse,
|
|
stroke_tolerance, stroke_antialias,
|
|
dev_clip);
|
|
|
|
FINISH:
|
|
if (dev_path != path)
|
|
_cairo_path_fixed_fini (dev_path);
|
|
_cairo_clip_destroy (dev_clip);
|
|
return status;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_fill (cairo_surface_wrapper_t *wrapper,
|
|
cairo_operator_t op,
|
|
const cairo_pattern_t *source,
|
|
unsigned int source_region_id,
|
|
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_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
|
|
cairo_pattern_union_t source_copy;
|
|
cairo_clip_t *dev_clip;
|
|
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
|
|
if (_cairo_clip_is_all_clipped (dev_clip))
|
|
return CAIRO_INT_STATUS_NOTHING_TO_DO;
|
|
|
|
if (wrapper->needs_transform || source_region_id != 0) {
|
|
cairo_matrix_t m;
|
|
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
|
|
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
|
|
if (unlikely (status))
|
|
goto FINISH;
|
|
|
|
_cairo_path_fixed_transform (&path_copy, &m);
|
|
dev_path = &path_copy;
|
|
|
|
status = cairo_matrix_invert (&m);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
_copy_transformed_pattern (&source_copy.base, source, &m, source_region_id);
|
|
source = &source_copy.base;
|
|
}
|
|
|
|
status = _cairo_surface_fill (wrapper->target, op, source,
|
|
dev_path, fill_rule,
|
|
tolerance, antialias,
|
|
dev_clip);
|
|
|
|
FINISH:
|
|
if (dev_path != path)
|
|
_cairo_path_fixed_fini (dev_path);
|
|
_cairo_clip_destroy (dev_clip);
|
|
return status;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_show_text_glyphs (cairo_surface_wrapper_t *wrapper,
|
|
cairo_operator_t op,
|
|
const cairo_pattern_t *source,
|
|
unsigned int source_region_id,
|
|
const char *utf8,
|
|
int utf8_len,
|
|
const 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_clip_t *dev_clip;
|
|
cairo_glyph_t stack_glyphs [CAIRO_STACK_ARRAY_LENGTH(cairo_glyph_t)];
|
|
cairo_glyph_t *dev_glyphs = stack_glyphs;
|
|
cairo_scaled_font_t *dev_scaled_font = scaled_font;
|
|
cairo_pattern_union_t source_copy;
|
|
cairo_font_options_t options;
|
|
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
|
|
if (_cairo_clip_is_all_clipped (dev_clip))
|
|
return CAIRO_INT_STATUS_NOTHING_TO_DO;
|
|
|
|
cairo_surface_get_font_options (wrapper->target, &options);
|
|
cairo_font_options_merge (&options, &scaled_font->options);
|
|
|
|
if (wrapper->needs_transform || source_region_id != 0) {
|
|
cairo_matrix_t m;
|
|
int i;
|
|
|
|
_cairo_surface_wrapper_get_transform (wrapper, &m);
|
|
|
|
if (! _cairo_matrix_is_translation (&m)) {
|
|
cairo_matrix_t ctm;
|
|
|
|
_cairo_matrix_multiply (&ctm,
|
|
&m,
|
|
&scaled_font->ctm);
|
|
dev_scaled_font = cairo_scaled_font_create (scaled_font->font_face,
|
|
&scaled_font->font_matrix,
|
|
&ctm, &options);
|
|
}
|
|
|
|
if (num_glyphs > ARRAY_LENGTH (stack_glyphs)) {
|
|
dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
|
|
if (unlikely (dev_glyphs == NULL)) {
|
|
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
|
|
goto FINISH;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < num_glyphs; i++) {
|
|
dev_glyphs[i] = glyphs[i];
|
|
cairo_matrix_transform_point (&m,
|
|
&dev_glyphs[i].x,
|
|
&dev_glyphs[i].y);
|
|
}
|
|
|
|
status = cairo_matrix_invert (&m);
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
_copy_transformed_pattern (&source_copy.base, source, &m, source_region_id);
|
|
source = &source_copy.base;
|
|
} else {
|
|
if (! cairo_font_options_equal (&options, &scaled_font->options)) {
|
|
dev_scaled_font = cairo_scaled_font_create (scaled_font->font_face,
|
|
&scaled_font->font_matrix,
|
|
&scaled_font->ctm,
|
|
&options);
|
|
}
|
|
|
|
/* show_text_glyphs is special because _cairo_surface_show_text_glyphs is allowed
|
|
* to modify the glyph array that's passed in. We must always
|
|
* copy the array before handing it to the backend.
|
|
*/
|
|
if (num_glyphs > ARRAY_LENGTH (stack_glyphs)) {
|
|
dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
|
|
if (unlikely (dev_glyphs == NULL)) {
|
|
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
|
|
goto FINISH;
|
|
}
|
|
}
|
|
|
|
memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
|
|
}
|
|
|
|
status = _cairo_surface_show_text_glyphs (wrapper->target, op, source,
|
|
utf8, utf8_len,
|
|
dev_glyphs, num_glyphs,
|
|
clusters, num_clusters,
|
|
cluster_flags,
|
|
dev_scaled_font,
|
|
dev_clip);
|
|
FINISH:
|
|
_cairo_clip_destroy (dev_clip);
|
|
if (dev_glyphs != stack_glyphs)
|
|
free (dev_glyphs);
|
|
if (dev_scaled_font != scaled_font)
|
|
cairo_scaled_font_destroy (dev_scaled_font);
|
|
return status;
|
|
}
|
|
|
|
cairo_status_t
|
|
_cairo_surface_wrapper_tag (cairo_surface_wrapper_t *wrapper,
|
|
cairo_bool_t begin,
|
|
const char *tag_name,
|
|
const char *attributes)
|
|
{
|
|
if (unlikely (wrapper->target->status))
|
|
return wrapper->target->status;
|
|
|
|
|
|
return _cairo_surface_tag (wrapper->target, begin, tag_name, attributes);
|
|
}
|
|
|
|
cairo_surface_t *
|
|
_cairo_surface_wrapper_create_similar (cairo_surface_wrapper_t *wrapper,
|
|
cairo_content_t content,
|
|
int width,
|
|
int height)
|
|
{
|
|
return _cairo_surface_create_scratch (wrapper->target,
|
|
content, width, height, NULL);
|
|
}
|
|
|
|
cairo_bool_t
|
|
_cairo_surface_wrapper_get_extents (cairo_surface_wrapper_t *wrapper,
|
|
cairo_rectangle_int_t *extents)
|
|
{
|
|
if (wrapper->has_extents) {
|
|
if (_cairo_surface_get_extents (wrapper->target, extents))
|
|
_cairo_rectangle_intersect (extents, &wrapper->extents);
|
|
else
|
|
*extents = wrapper->extents;
|
|
|
|
return TRUE;
|
|
} else {
|
|
return _cairo_surface_get_extents (wrapper->target, extents);
|
|
}
|
|
}
|
|
|
|
static cairo_bool_t
|
|
_cairo_surface_wrapper_needs_device_transform (cairo_surface_wrapper_t *wrapper)
|
|
{
|
|
return
|
|
(wrapper->has_extents && (wrapper->extents.x | wrapper->extents.y)) ||
|
|
! _cairo_matrix_is_identity (&wrapper->transform) ||
|
|
! _cairo_matrix_is_identity (&wrapper->target->device_transform);
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_intersect_extents (cairo_surface_wrapper_t *wrapper,
|
|
const cairo_rectangle_int_t *extents)
|
|
{
|
|
if (! wrapper->has_extents) {
|
|
wrapper->extents = *extents;
|
|
wrapper->has_extents = TRUE;
|
|
} else
|
|
_cairo_rectangle_intersect (&wrapper->extents, extents);
|
|
|
|
wrapper->needs_transform =
|
|
_cairo_surface_wrapper_needs_device_transform (wrapper);
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_set_inverse_transform (cairo_surface_wrapper_t *wrapper,
|
|
const cairo_matrix_t *transform)
|
|
{
|
|
cairo_status_t status;
|
|
|
|
if (transform == NULL || _cairo_matrix_is_identity (transform)) {
|
|
cairo_matrix_init_identity (&wrapper->transform);
|
|
|
|
wrapper->needs_transform =
|
|
_cairo_surface_wrapper_needs_device_transform (wrapper);
|
|
} else {
|
|
wrapper->transform = *transform;
|
|
status = cairo_matrix_invert (&wrapper->transform);
|
|
/* should always be invertible unless given pathological input */
|
|
assert (status == CAIRO_STATUS_SUCCESS);
|
|
|
|
wrapper->needs_transform = TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_set_clip (cairo_surface_wrapper_t *wrapper,
|
|
const cairo_clip_t *clip)
|
|
{
|
|
wrapper->clip = clip;
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_get_font_options (cairo_surface_wrapper_t *wrapper,
|
|
cairo_font_options_t *options)
|
|
{
|
|
cairo_surface_get_font_options (wrapper->target, options);
|
|
}
|
|
|
|
cairo_surface_t *
|
|
_cairo_surface_wrapper_snapshot (cairo_surface_wrapper_t *wrapper)
|
|
{
|
|
if (wrapper->target->backend->snapshot)
|
|
return wrapper->target->backend->snapshot (wrapper->target);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
cairo_bool_t
|
|
_cairo_surface_wrapper_has_show_text_glyphs (cairo_surface_wrapper_t *wrapper)
|
|
{
|
|
return cairo_surface_has_show_text_glyphs (wrapper->target);
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_init (cairo_surface_wrapper_t *wrapper,
|
|
cairo_surface_t *target)
|
|
{
|
|
wrapper->target = cairo_surface_reference (target);
|
|
cairo_matrix_init_identity (&wrapper->transform);
|
|
wrapper->has_extents = FALSE;
|
|
wrapper->extents.x = wrapper->extents.y = 0;
|
|
wrapper->clip = NULL;
|
|
wrapper->source_region_id = 0;
|
|
wrapper->mask_region_id = 0;
|
|
|
|
wrapper->needs_transform = FALSE;
|
|
if (target) {
|
|
wrapper->needs_transform =
|
|
! _cairo_matrix_is_identity (&target->device_transform);
|
|
}
|
|
}
|
|
|
|
void
|
|
_cairo_surface_wrapper_fini (cairo_surface_wrapper_t *wrapper)
|
|
{
|
|
cairo_surface_destroy (wrapper->target);
|
|
}
|
|
|
|
cairo_bool_t
|
|
_cairo_surface_wrapper_get_target_extents (cairo_surface_wrapper_t *wrapper,
|
|
cairo_bool_t surface_is_unbounded,
|
|
cairo_rectangle_int_t *extents)
|
|
{
|
|
cairo_rectangle_int_t clip;
|
|
cairo_bool_t has_clip = FALSE;
|
|
|
|
if (!surface_is_unbounded)
|
|
has_clip = _cairo_surface_get_extents (wrapper->target, &clip);
|
|
|
|
if (wrapper->clip) {
|
|
if (has_clip) {
|
|
if (! _cairo_rectangle_intersect (&clip,
|
|
_cairo_clip_get_extents (wrapper->clip)))
|
|
return FALSE;
|
|
} else {
|
|
has_clip = TRUE;
|
|
clip = *_cairo_clip_get_extents (wrapper->clip);
|
|
}
|
|
}
|
|
|
|
if (has_clip && wrapper->needs_transform) {
|
|
cairo_matrix_t m;
|
|
double x1, y1, x2, y2;
|
|
|
|
_cairo_surface_wrapper_get_inverse_transform (wrapper, &m);
|
|
|
|
x1 = clip.x;
|
|
y1 = clip.y;
|
|
x2 = clip.x + clip.width;
|
|
y2 = clip.y + clip.height;
|
|
|
|
_cairo_matrix_transform_bounding_box (&m, &x1, &y1, &x2, &y2, NULL);
|
|
|
|
clip.x = floor (x1);
|
|
clip.y = floor (y1);
|
|
clip.width = ceil (x2) - clip.x;
|
|
clip.height = ceil (y2) - clip.y;
|
|
}
|
|
|
|
if (has_clip) {
|
|
if (wrapper->has_extents) {
|
|
*extents = wrapper->extents;
|
|
return _cairo_rectangle_intersect (extents, &clip);
|
|
} else {
|
|
*extents = clip;
|
|
return TRUE;
|
|
}
|
|
} else if (wrapper->has_extents) {
|
|
*extents = wrapper->extents;
|
|
return TRUE;
|
|
} else {
|
|
_cairo_unbounded_rectangle_init (extents);
|
|
return TRUE;
|
|
}
|
|
}
|