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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 © 2012 Intel Corporation |
* |
* This library is free software; you can redistribute it and/or |
* modify it either under the terms of the GNU Lesser General Public |
* License version 2.1 as published by the Free Software Foundation |
* (the "LGPL") or, at your option, under the terms of the Mozilla |
* Public License Version 1.1 (the "MPL"). If you do not alter this |
* notice, a recipient may use your version of this file under either |
* the MPL or the LGPL. |
* |
* You should have received a copy of the LGPL along with this library |
* in the file COPYING-LGPL-2.1; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
* You should have received a copy of the MPL along with this library |
* in the file COPYING-MPL-1.1 |
* |
* The contents of this file are subject to the Mozilla Public License |
* Version 1.1 (the "License"); you may not use this file except in |
* compliance with the License. You may obtain a copy of the License at |
* http://www.mozilla.org/MPL/ |
* |
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
* OF ANY KIND, either express or implied. See the LGPL or the MPL for |
* the specific language governing rights and limitations. |
* |
* The Original Code is the cairo graphics library. |
* |
* The Initial Developer of the Original Code is University of Southern |
* California. |
* |
* Contributor(s): |
* Chris Wilson <chris@chris-wilson.co.uk> |
*/ |
|
#include "cairoint.h" |
|
#include "cairo-compositor-private.h" |
#include "cairo-clip-private.h" |
#include "cairo-pattern-private.h" |
#include "cairo-surface-private.h" |
#include "cairo-surface-offset-private.h" |
|
static cairo_int_status_t |
_cairo_shape_mask_compositor_stroke (const cairo_compositor_t *_compositor, |
cairo_composite_rectangles_t *extents, |
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) |
{ |
cairo_surface_t *mask; |
cairo_surface_pattern_t pattern; |
cairo_int_status_t status; |
cairo_clip_t *clip; |
|
if (! extents->is_bounded) |
return CAIRO_INT_STATUS_UNSUPPORTED; |
|
TRACE ((stderr, "%s\n", __FUNCTION__)); |
mask = _cairo_surface_create_similar_scratch (extents->surface, |
CAIRO_CONTENT_ALPHA, |
extents->bounded.width, |
extents->bounded.height); |
if (unlikely (mask->status)) |
return mask->status; |
|
clip = extents->clip; |
if (! _cairo_clip_is_region (clip)) |
clip = _cairo_clip_copy_region (clip); |
|
if (! mask->is_clear) { |
status = _cairo_surface_offset_paint (mask, |
extents->bounded.x, |
extents->bounded.y, |
CAIRO_OPERATOR_CLEAR, |
&_cairo_pattern_clear.base, |
clip); |
if (unlikely (status)) |
goto error; |
} |
|
status = _cairo_surface_offset_stroke (mask, |
extents->bounded.x, |
extents->bounded.y, |
CAIRO_OPERATOR_ADD, |
&_cairo_pattern_white.base, |
path, style, ctm, ctm_inverse, |
tolerance, antialias, |
clip); |
if (unlikely (status)) |
goto error; |
|
if (clip != extents->clip) { |
status = _cairo_clip_combine_with_surface (extents->clip, mask, |
extents->bounded.x, |
extents->bounded.y); |
if (unlikely (status)) |
goto error; |
} |
|
_cairo_pattern_init_for_surface (&pattern, mask); |
cairo_matrix_init_translate (&pattern.base.matrix, |
-extents->bounded.x, |
-extents->bounded.y); |
pattern.base.filter = CAIRO_FILTER_NEAREST; |
pattern.base.extend = CAIRO_EXTEND_NONE; |
if (extents->op == CAIRO_OPERATOR_SOURCE) { |
status = _cairo_surface_mask (extents->surface, |
CAIRO_OPERATOR_DEST_OUT, |
&_cairo_pattern_white.base, |
&pattern.base, |
clip); |
if ((status == CAIRO_INT_STATUS_SUCCESS)) { |
status = _cairo_surface_mask (extents->surface, |
CAIRO_OPERATOR_ADD, |
&extents->source_pattern.base, |
&pattern.base, |
clip); |
} |
} else { |
status = _cairo_surface_mask (extents->surface, |
extents->op, |
&extents->source_pattern.base, |
&pattern.base, |
clip); |
} |
_cairo_pattern_fini (&pattern.base); |
|
error: |
cairo_surface_destroy (mask); |
if (clip != extents->clip) |
_cairo_clip_destroy (clip); |
return status; |
} |
|
static cairo_int_status_t |
_cairo_shape_mask_compositor_fill (const cairo_compositor_t *_compositor, |
cairo_composite_rectangles_t *extents, |
const cairo_path_fixed_t *path, |
cairo_fill_rule_t fill_rule, |
double tolerance, |
cairo_antialias_t antialias) |
{ |
cairo_surface_t *mask; |
cairo_surface_pattern_t pattern; |
cairo_int_status_t status; |
cairo_clip_t *clip; |
|
TRACE ((stderr, "%s\n", __FUNCTION__)); |
|
if (! extents->is_bounded) |
return CAIRO_INT_STATUS_UNSUPPORTED; |
|
mask = _cairo_surface_create_similar_scratch (extents->surface, |
CAIRO_CONTENT_ALPHA, |
extents->bounded.width, |
extents->bounded.height); |
if (unlikely (mask->status)) |
return mask->status; |
|
clip = extents->clip; |
if (! _cairo_clip_is_region (clip)) |
clip = _cairo_clip_copy_region (clip); |
|
if (! mask->is_clear) { |
status = _cairo_surface_offset_paint (mask, |
extents->bounded.x, |
extents->bounded.y, |
CAIRO_OPERATOR_CLEAR, |
&_cairo_pattern_clear.base, |
clip); |
if (unlikely (status)) |
goto error; |
} |
|
status = _cairo_surface_offset_fill (mask, |
extents->bounded.x, |
extents->bounded.y, |
CAIRO_OPERATOR_ADD, |
&_cairo_pattern_white.base, |
path, fill_rule, tolerance, antialias, |
clip); |
if (unlikely (status)) |
goto error; |
|
if (clip != extents->clip) { |
status = _cairo_clip_combine_with_surface (extents->clip, mask, |
extents->bounded.x, |
extents->bounded.y); |
if (unlikely (status)) |
goto error; |
} |
|
_cairo_pattern_init_for_surface (&pattern, mask); |
cairo_matrix_init_translate (&pattern.base.matrix, |
-extents->bounded.x, |
-extents->bounded.y); |
pattern.base.filter = CAIRO_FILTER_NEAREST; |
pattern.base.extend = CAIRO_EXTEND_NONE; |
if (extents->op == CAIRO_OPERATOR_SOURCE) { |
status = _cairo_surface_mask (extents->surface, |
CAIRO_OPERATOR_DEST_OUT, |
&_cairo_pattern_white.base, |
&pattern.base, |
clip); |
if ((status == CAIRO_INT_STATUS_SUCCESS)) { |
status = _cairo_surface_mask (extents->surface, |
CAIRO_OPERATOR_ADD, |
&extents->source_pattern.base, |
&pattern.base, |
clip); |
} |
} else { |
status = _cairo_surface_mask (extents->surface, |
extents->op, |
&extents->source_pattern.base, |
&pattern.base, |
clip); |
} |
_cairo_pattern_fini (&pattern.base); |
|
error: |
if (clip != extents->clip) |
_cairo_clip_destroy (clip); |
cairo_surface_destroy (mask); |
return status; |
} |
|
static cairo_int_status_t |
_cairo_shape_mask_compositor_glyphs (const cairo_compositor_t *_compositor, |
cairo_composite_rectangles_t *extents, |
cairo_scaled_font_t *scaled_font, |
cairo_glyph_t *glyphs, |
int num_glyphs, |
cairo_bool_t overlap) |
{ |
cairo_surface_t *mask; |
cairo_surface_pattern_t pattern; |
cairo_int_status_t status; |
cairo_clip_t *clip; |
|
if (! extents->is_bounded) |
return CAIRO_INT_STATUS_UNSUPPORTED; |
|
TRACE ((stderr, "%s\n", __FUNCTION__)); |
mask = _cairo_surface_create_similar_scratch (extents->surface, |
CAIRO_CONTENT_ALPHA, |
extents->bounded.width, |
extents->bounded.height); |
if (unlikely (mask->status)) |
return mask->status; |
|
clip = extents->clip; |
if (! _cairo_clip_is_region (clip)) |
clip = _cairo_clip_copy_region (clip); |
|
if (! mask->is_clear) { |
status = _cairo_surface_offset_paint (mask, |
extents->bounded.x, |
extents->bounded.y, |
CAIRO_OPERATOR_CLEAR, |
&_cairo_pattern_clear.base, |
clip); |
if (unlikely (status)) |
goto error; |
} |
|
status = _cairo_surface_offset_glyphs (mask, |
extents->bounded.x, |
extents->bounded.y, |
CAIRO_OPERATOR_ADD, |
&_cairo_pattern_white.base, |
scaled_font, glyphs, num_glyphs, |
clip); |
if (unlikely (status)) |
goto error; |
|
if (clip != extents->clip) { |
status = _cairo_clip_combine_with_surface (extents->clip, mask, |
extents->bounded.x, |
extents->bounded.y); |
if (unlikely (status)) |
goto error; |
} |
|
_cairo_pattern_init_for_surface (&pattern, mask); |
cairo_matrix_init_translate (&pattern.base.matrix, |
-extents->bounded.x, |
-extents->bounded.y); |
pattern.base.filter = CAIRO_FILTER_NEAREST; |
pattern.base.extend = CAIRO_EXTEND_NONE; |
if (extents->op == CAIRO_OPERATOR_SOURCE) { |
status = _cairo_surface_mask (extents->surface, |
CAIRO_OPERATOR_DEST_OUT, |
&_cairo_pattern_white.base, |
&pattern.base, |
clip); |
if ((status == CAIRO_INT_STATUS_SUCCESS)) { |
status = _cairo_surface_mask (extents->surface, |
CAIRO_OPERATOR_ADD, |
&extents->source_pattern.base, |
&pattern.base, |
clip); |
} |
} else { |
status = _cairo_surface_mask (extents->surface, |
extents->op, |
&extents->source_pattern.base, |
&pattern.base, |
clip); |
} |
_cairo_pattern_fini (&pattern.base); |
|
error: |
if (clip != extents->clip) |
_cairo_clip_destroy (clip); |
cairo_surface_destroy (mask); |
return status; |
} |
|
void |
_cairo_shape_mask_compositor_init (cairo_compositor_t *compositor, |
const cairo_compositor_t *delegate) |
{ |
compositor->delegate = delegate; |
|
compositor->paint = NULL; |
compositor->mask = NULL; |
compositor->fill = _cairo_shape_mask_compositor_fill; |
compositor->stroke = _cairo_shape_mask_compositor_stroke; |
compositor->glyphs = _cairo_shape_mask_compositor_glyphs; |
} |