diff options
Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c')
| -rw-r--r-- | libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c b/libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c new file mode 100644 index 0000000..3117267 --- /dev/null +++ b/libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c @@ -0,0 +1,340 @@ +/* -*- 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_scratch (extents->surface, + CAIRO_CONTENT_ALPHA, + extents->bounded.width, + extents->bounded.height, + NULL); + 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_scratch (extents->surface, + CAIRO_CONTENT_ALPHA, + extents->bounded.width, + extents->bounded.height, + NULL); + 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_scratch (extents->surface, + CAIRO_CONTENT_ALPHA, + extents->bounded.width, + extents->bounded.height, + NULL); + 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; +} |