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|
/* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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-surface-wrapper-private.h"
/* A collection of routines to facilitate surface wrapping */
static cairo_bool_t
_cairo_surface_wrapper_needs_device_transform (cairo_surface_wrapper_t *wrapper,
cairo_matrix_t *matrix)
{
if (_cairo_matrix_is_identity (&wrapper->target->device_transform))
return FALSE;
*matrix = wrapper->target->device_transform;
return TRUE;
}
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);
}
cairo_status_t
_cairo_surface_wrapper_paint (cairo_surface_wrapper_t *wrapper,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_clip_t *clip)
{
cairo_status_t status;
cairo_matrix_t device_transform;
cairo_clip_t clip_copy, *dev_clip = clip;
if (unlikely (wrapper->target->status))
return wrapper->target->status;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (clip != NULL &&
_cairo_surface_wrapper_needs_device_transform (wrapper,
&device_transform))
{
status = _cairo_clip_init_copy_transformed (&clip_copy, clip,
&device_transform);
if (unlikely (status))
goto FINISH;
dev_clip = &clip_copy;
}
status = _cairo_surface_paint (wrapper->target, op, source, dev_clip);
FINISH:
if (dev_clip != clip)
_cairo_clip_reset (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,
const cairo_pattern_t *mask,
cairo_clip_t *clip)
{
cairo_status_t status;
cairo_matrix_t device_transform;
cairo_clip_t clip_copy, *dev_clip = clip;
if (unlikely (wrapper->target->status))
return wrapper->target->status;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (clip != NULL &&
_cairo_surface_wrapper_needs_device_transform (wrapper,
&device_transform))
{
status = _cairo_clip_init_copy_transformed (&clip_copy, clip,
&device_transform);
if (unlikely (status))
goto FINISH;
dev_clip = &clip_copy;
}
status = _cairo_surface_mask (wrapper->target, op, source, mask, dev_clip);
FINISH:
if (dev_clip != clip)
_cairo_clip_reset (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,
cairo_path_fixed_t *path,
cairo_stroke_style_t *stroke_style,
cairo_matrix_t *ctm,
cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias,
cairo_clip_t *clip)
{
cairo_status_t status;
cairo_matrix_t device_transform;
cairo_path_fixed_t path_copy, *dev_path = path;
cairo_clip_t clip_copy, *dev_clip = clip;
cairo_matrix_t dev_ctm = *ctm;
cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
if (unlikely (wrapper->target->status))
return wrapper->target->status;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (_cairo_surface_wrapper_needs_device_transform (wrapper,
&device_transform))
{
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_transform (&path_copy, &device_transform);
dev_path = &path_copy;
if (clip != NULL) {
status = _cairo_clip_init_copy_transformed (&clip_copy, clip,
&device_transform);
if (unlikely (status))
goto FINISH;
dev_clip = &clip_copy;
}
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &device_transform);
status = cairo_matrix_invert (&device_transform);
assert (status == CAIRO_STATUS_SUCCESS);
cairo_matrix_multiply (&dev_ctm_inverse,
&device_transform,
&dev_ctm_inverse);
}
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);
if (dev_clip != clip)
_cairo_clip_reset (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,
cairo_fill_rule_t fill_rule,
double fill_tolerance,
cairo_antialias_t fill_antialias,
cairo_path_fixed_t *path,
cairo_operator_t stroke_op,
const cairo_pattern_t *stroke_source,
cairo_stroke_style_t *stroke_style,
cairo_matrix_t *stroke_ctm,
cairo_matrix_t *stroke_ctm_inverse,
double stroke_tolerance,
cairo_antialias_t stroke_antialias,
cairo_clip_t *clip)
{
cairo_status_t status;
cairo_matrix_t device_transform;
cairo_path_fixed_t path_copy, *dev_path = path;
cairo_clip_t clip_copy, *dev_clip = clip;
cairo_matrix_t dev_ctm = *stroke_ctm;
cairo_matrix_t dev_ctm_inverse = *stroke_ctm_inverse;
if (unlikely (wrapper->target->status))
return wrapper->target->status;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (_cairo_surface_wrapper_needs_device_transform (wrapper,
&device_transform))
{
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_transform (&path_copy, &device_transform);
dev_path = &path_copy;
if (clip != NULL) {
status = _cairo_clip_init_copy_transformed (&clip_copy, clip,
&device_transform);
if (unlikely (status))
goto FINISH;
dev_clip = &clip_copy;
}
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &device_transform);
status = cairo_matrix_invert (&device_transform);
assert (status == CAIRO_STATUS_SUCCESS);
cairo_matrix_multiply (&dev_ctm_inverse,
&device_transform,
&dev_ctm_inverse);
}
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);
if (dev_clip != clip)
_cairo_clip_reset (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,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
cairo_clip_t *clip)
{
cairo_status_t status;
cairo_matrix_t device_transform;
cairo_path_fixed_t path_copy, *dev_path = path;
cairo_clip_t clip_copy, *dev_clip = clip;
if (unlikely (wrapper->target->status))
return wrapper->target->status;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (_cairo_surface_wrapper_needs_device_transform (wrapper,
&device_transform))
{
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_transform (&path_copy, &device_transform);
dev_path = &path_copy;
if (clip != NULL) {
status = _cairo_clip_init_copy_transformed (&clip_copy, clip,
&device_transform);
if (unlikely (status))
goto FINISH;
dev_clip = &clip_copy;
}
}
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);
if (dev_clip != clip)
_cairo_clip_reset (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,
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,
cairo_clip_t *clip)
{
cairo_status_t status;
cairo_matrix_t device_transform;
cairo_clip_t clip_copy, *dev_clip = clip;
cairo_glyph_t *dev_glyphs = glyphs;
if (unlikely (wrapper->target->status))
return wrapper->target->status;
if (glyphs == NULL || num_glyphs == 0)
return CAIRO_STATUS_SUCCESS;
if (clip && clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
if (_cairo_surface_wrapper_needs_device_transform (wrapper,
&device_transform))
{
int i;
if (clip != NULL) {
dev_clip = &clip_copy;
status = _cairo_clip_init_copy_transformed (&clip_copy, clip,
&device_transform);
if (unlikely (status))
goto FINISH;
}
dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
if (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 (&device_transform,
&dev_glyphs[i].x,
&dev_glyphs[i].y);
}
}
status = _cairo_surface_show_text_glyphs (wrapper->target, op, source,
utf8, utf8_len,
dev_glyphs, num_glyphs,
clusters, num_clusters,
cluster_flags,
scaled_font,
dev_clip);
FINISH:
if (dev_clip != clip)
_cairo_clip_reset (dev_clip);
if (dev_glyphs != glyphs)
free (dev_glyphs);
return status;
}
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_similar_solid (wrapper->target,
content, width, height,
CAIRO_COLOR_TRANSPARENT,
TRUE);
}
cairo_bool_t
_cairo_surface_wrapper_get_extents (cairo_surface_wrapper_t *wrapper,
cairo_rectangle_int_t *extents)
{
return _cairo_surface_get_extents (wrapper->target, extents);
}
cairo_surface_t *
_cairo_surface_wrapper_snapshot (cairo_surface_wrapper_t *wrapper)
{
return _cairo_surface_snapshot (wrapper->target);
}
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);
}
void
_cairo_surface_wrapper_fini (cairo_surface_wrapper_t *wrapper)
{
cairo_surface_destroy (wrapper->target);
}
|
