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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* cairo - a vector graphics library with display and print output |
| 2 | * |
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| 3 | * Copyright © 2009 Intel Corporation |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it either under the terms of the GNU Lesser General Public |
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| 7 | * License version 2.1 as published by the Free Software Foundation |
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| 8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
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| 9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
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| 10 | * notice, a recipient may use your version of this file under either |
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| 11 | * the MPL or the LGPL. |
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| 12 | * |
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| 13 | * You should have received a copy of the LGPL along with this library |
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| 14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
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| 16 | * You should have received a copy of the MPL along with this library |
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| 17 | * in the file COPYING-MPL-1.1 |
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| 18 | * |
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| 19 | * The contents of this file are subject to the Mozilla Public License |
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| 20 | * Version 1.1 (the "License"); you may not use this file except in |
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| 21 | * compliance with the License. You may obtain a copy of the License at |
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| 22 | * http://www.mozilla.org/MPL/ |
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| 23 | * |
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| 24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
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| 25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
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| 26 | * the specific language governing rights and limitations. |
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| 27 | * |
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| 28 | * The Original Code is the cairo graphics library. |
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| 29 | * |
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| 30 | * The Initial Developer of the Original Code is Red Hat, Inc. |
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| 31 | * |
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| 32 | * Contributor(s): |
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| 33 | * Chris Wilson |
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| 34 | */ |
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| 35 | |||
| 36 | #include "cairoint.h" |
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| 37 | |||
| 38 | #include "cairo-clip-inline.h" |
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| 39 | #include "cairo-error-private.h" |
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| 40 | #include "cairo-composite-rectangles-private.h" |
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| 41 | #include "cairo-pattern-private.h" |
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| 42 | |||
| 43 | /* A collection of routines to facilitate writing compositors. */ |
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| 44 | |||
| 45 | void _cairo_composite_rectangles_fini (cairo_composite_rectangles_t *extents) |
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| 46 | { |
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| 47 | _cairo_clip_destroy (extents->clip); |
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| 48 | } |
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| 49 | |||
| 50 | static void |
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| 51 | _cairo_composite_reduce_pattern (const cairo_pattern_t *src, |
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| 52 | cairo_pattern_union_t *dst) |
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| 53 | { |
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| 54 | int tx, ty; |
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| 55 | |||
| 56 | _cairo_pattern_init_static_copy (&dst->base, src); |
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| 57 | if (dst->base.type == CAIRO_PATTERN_TYPE_SOLID) |
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| 58 | return; |
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| 59 | |||
| 60 | dst->base.filter = _cairo_pattern_analyze_filter (&dst->base, NULL), |
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| 61 | |||
| 62 | tx = ty = 0; |
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| 63 | if (_cairo_matrix_is_pixman_translation (&dst->base.matrix, |
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| 64 | dst->base.filter, |
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| 65 | &tx, &ty)) |
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| 66 | { |
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| 67 | dst->base.matrix.x0 = tx; |
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| 68 | dst->base.matrix.y0 = ty; |
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| 69 | } |
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| 70 | } |
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| 71 | |||
| 72 | static inline cairo_bool_t |
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| 73 | _cairo_composite_rectangles_init (cairo_composite_rectangles_t *extents, |
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| 74 | cairo_surface_t *surface, |
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| 75 | cairo_operator_t op, |
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| 76 | const cairo_pattern_t *source, |
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| 77 | const cairo_clip_t *clip) |
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| 78 | { |
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| 79 | if (_cairo_clip_is_all_clipped (clip)) |
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| 80 | return FALSE; |
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| 81 | |||
| 82 | extents->surface = surface; |
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| 83 | extents->op = op; |
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| 84 | |||
| 85 | _cairo_surface_get_extents (surface, &extents->destination); |
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| 86 | extents->clip = NULL; |
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| 87 | |||
| 88 | extents->unbounded = extents->destination; |
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| 89 | if (clip && ! _cairo_rectangle_intersect (&extents->unbounded, |
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| 90 | _cairo_clip_get_extents (clip))) |
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| 91 | return FALSE; |
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| 92 | |||
| 93 | extents->bounded = extents->unbounded; |
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| 94 | extents->is_bounded = _cairo_operator_bounded_by_either (op); |
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| 95 | |||
| 96 | extents->original_source_pattern = source; |
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| 97 | _cairo_composite_reduce_pattern (source, &extents->source_pattern); |
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| 98 | |||
| 99 | _cairo_pattern_get_extents (&extents->source_pattern.base, |
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| 100 | &extents->source); |
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| 101 | if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE) { |
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| 102 | if (! _cairo_rectangle_intersect (&extents->bounded, &extents->source)) |
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| 103 | return FALSE; |
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| 104 | } |
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| 105 | |||
| 106 | extents->original_mask_pattern = NULL; |
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| 107 | extents->mask_pattern.base.type = CAIRO_PATTERN_TYPE_SOLID; |
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| 108 | extents->mask_pattern.solid.color.alpha = 1.; /* XXX full initialisation? */ |
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| 109 | extents->mask_pattern.solid.color.alpha_short = 0xffff; |
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| 110 | |||
| 111 | return TRUE; |
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| 112 | } |
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| 113 | |||
| 114 | cairo_int_status_t |
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| 115 | _cairo_composite_rectangles_init_for_paint (cairo_composite_rectangles_t *extents, |
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| 116 | cairo_surface_t *surface, |
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| 117 | cairo_operator_t op, |
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| 118 | const cairo_pattern_t *source, |
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| 119 | const cairo_clip_t *clip) |
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| 120 | { |
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| 121 | if (! _cairo_composite_rectangles_init (extents, |
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| 122 | surface, op, source, clip)) |
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| 123 | { |
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| 124 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 125 | } |
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| 126 | |||
| 127 | extents->mask = extents->destination; |
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| 128 | |||
| 129 | extents->clip = _cairo_clip_reduce_for_composite (clip, extents); |
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| 130 | if (_cairo_clip_is_all_clipped (extents->clip)) |
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| 131 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 132 | |||
| 133 | if (! _cairo_rectangle_intersect (&extents->unbounded, |
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| 134 | _cairo_clip_get_extents (extents->clip))) |
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| 135 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 136 | |||
| 137 | if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) |
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| 138 | _cairo_pattern_sampled_area (&extents->source_pattern.base, |
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| 139 | &extents->bounded, |
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| 140 | &extents->source_sample_area); |
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| 141 | |||
| 142 | return CAIRO_STATUS_SUCCESS; |
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| 143 | } |
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| 144 | |||
| 145 | static cairo_int_status_t |
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| 146 | _cairo_composite_rectangles_intersect (cairo_composite_rectangles_t *extents, |
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| 147 | const cairo_clip_t *clip) |
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| 148 | { |
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| 149 | cairo_bool_t ret; |
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| 150 | |||
| 151 | ret = _cairo_rectangle_intersect (&extents->bounded, &extents->mask); |
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| 152 | if (! ret && extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) |
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| 153 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 154 | |||
| 155 | if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE)) { |
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| 156 | extents->unbounded = extents->bounded; |
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| 157 | } else if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) { |
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| 158 | if (!_cairo_rectangle_intersect (&extents->unbounded, &extents->mask)) |
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| 159 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 160 | } |
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| 161 | |||
| 162 | extents->clip = _cairo_clip_reduce_for_composite (clip, extents); |
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| 163 | if (_cairo_clip_is_all_clipped (extents->clip)) |
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| 164 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 165 | |||
| 166 | if (! _cairo_rectangle_intersect (&extents->unbounded, |
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| 167 | _cairo_clip_get_extents (extents->clip))) |
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| 168 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 169 | |||
| 170 | if (! _cairo_rectangle_intersect (&extents->bounded, |
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| 171 | _cairo_clip_get_extents (extents->clip)) && |
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| 172 | extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) |
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| 173 | { |
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| 174 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 175 | } |
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| 176 | |||
| 177 | if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) |
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| 178 | _cairo_pattern_sampled_area (&extents->source_pattern.base, |
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| 179 | &extents->bounded, |
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| 180 | &extents->source_sample_area); |
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| 181 | if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) { |
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| 182 | _cairo_pattern_sampled_area (&extents->mask_pattern.base, |
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| 183 | &extents->bounded, |
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| 184 | &extents->mask_sample_area); |
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| 185 | if (extents->mask_sample_area.width == 0 || |
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| 186 | extents->mask_sample_area.height == 0) { |
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| 187 | _cairo_composite_rectangles_fini (extents); |
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| 188 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 189 | } |
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| 190 | } |
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| 191 | |||
| 192 | return CAIRO_STATUS_SUCCESS; |
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| 193 | } |
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| 194 | |||
| 195 | cairo_int_status_t |
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| 196 | _cairo_composite_rectangles_intersect_source_extents (cairo_composite_rectangles_t *extents, |
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| 197 | const cairo_box_t *box) |
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| 198 | { |
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| 199 | cairo_rectangle_int_t rect; |
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| 200 | cairo_clip_t *clip; |
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| 201 | |||
| 202 | _cairo_box_round_to_rectangle (box, &rect); |
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| 203 | if (rect.x == extents->source.x && |
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| 204 | rect.y == extents->source.y && |
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| 205 | rect.width == extents->source.width && |
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| 206 | rect.height == extents->source.height) |
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| 207 | { |
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| 208 | return CAIRO_INT_STATUS_SUCCESS; |
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| 209 | } |
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| 210 | |||
| 211 | _cairo_rectangle_intersect (&extents->source, &rect); |
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| 212 | |||
| 213 | rect = extents->bounded; |
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| 214 | if (! _cairo_rectangle_intersect (&extents->bounded, &extents->source) && |
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| 215 | extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE) |
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| 216 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 217 | |||
| 218 | if (rect.width == extents->bounded.width && |
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| 219 | rect.height == extents->bounded.height) |
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| 220 | return CAIRO_INT_STATUS_SUCCESS; |
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| 221 | |||
| 222 | if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE)) { |
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| 223 | extents->unbounded = extents->bounded; |
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| 224 | } else if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) { |
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| 225 | if (!_cairo_rectangle_intersect (&extents->unbounded, &extents->mask)) |
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| 226 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 227 | } |
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| 228 | |||
| 229 | clip = extents->clip; |
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| 230 | extents->clip = _cairo_clip_reduce_for_composite (clip, extents); |
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| 231 | if (clip != extents->clip) |
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| 232 | _cairo_clip_destroy (clip); |
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| 233 | |||
| 234 | if (_cairo_clip_is_all_clipped (extents->clip)) |
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| 235 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 236 | |||
| 237 | if (! _cairo_rectangle_intersect (&extents->unbounded, |
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| 238 | _cairo_clip_get_extents (extents->clip))) |
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| 239 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 240 | |||
| 241 | if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) |
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| 242 | _cairo_pattern_sampled_area (&extents->source_pattern.base, |
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| 243 | &extents->bounded, |
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| 244 | &extents->source_sample_area); |
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| 245 | if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) { |
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| 246 | _cairo_pattern_sampled_area (&extents->mask_pattern.base, |
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| 247 | &extents->bounded, |
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| 248 | &extents->mask_sample_area); |
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| 249 | if (extents->mask_sample_area.width == 0 || |
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| 250 | extents->mask_sample_area.height == 0) |
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| 251 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 252 | } |
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| 253 | |||
| 254 | return CAIRO_INT_STATUS_SUCCESS; |
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| 255 | } |
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| 256 | |||
| 257 | cairo_int_status_t |
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| 258 | _cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t *extents, |
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| 259 | const cairo_box_t *box) |
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| 260 | { |
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| 261 | cairo_rectangle_int_t mask; |
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| 262 | cairo_clip_t *clip; |
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| 263 | |||
| 264 | _cairo_box_round_to_rectangle (box, &mask); |
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| 265 | if (mask.x == extents->mask.x && |
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| 266 | mask.y == extents->mask.y && |
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| 267 | mask.width == extents->mask.width && |
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| 268 | mask.height == extents->mask.height) |
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| 269 | { |
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| 270 | return CAIRO_INT_STATUS_SUCCESS; |
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| 271 | } |
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| 272 | |||
| 273 | _cairo_rectangle_intersect (&extents->mask, &mask); |
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| 274 | |||
| 275 | mask = extents->bounded; |
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| 276 | if (! _cairo_rectangle_intersect (&extents->bounded, &extents->mask) && |
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| 277 | extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) |
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| 278 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 279 | |||
| 280 | if (mask.width == extents->bounded.width && |
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| 281 | mask.height == extents->bounded.height) |
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| 282 | return CAIRO_INT_STATUS_SUCCESS; |
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| 283 | |||
| 284 | if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE)) { |
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| 285 | extents->unbounded = extents->bounded; |
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| 286 | } else if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) { |
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| 287 | if (!_cairo_rectangle_intersect (&extents->unbounded, &extents->mask)) |
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| 288 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 289 | } |
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| 290 | |||
| 291 | clip = extents->clip; |
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| 292 | extents->clip = _cairo_clip_reduce_for_composite (clip, extents); |
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| 293 | if (clip != extents->clip) |
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| 294 | _cairo_clip_destroy (clip); |
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| 295 | |||
| 296 | if (_cairo_clip_is_all_clipped (extents->clip)) |
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| 297 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 298 | |||
| 299 | if (! _cairo_rectangle_intersect (&extents->unbounded, |
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| 300 | _cairo_clip_get_extents (extents->clip))) |
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| 301 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 302 | |||
| 303 | if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) |
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| 304 | _cairo_pattern_sampled_area (&extents->source_pattern.base, |
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| 305 | &extents->bounded, |
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| 306 | &extents->source_sample_area); |
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| 307 | if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) { |
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| 308 | _cairo_pattern_sampled_area (&extents->mask_pattern.base, |
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| 309 | &extents->bounded, |
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| 310 | &extents->mask_sample_area); |
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| 311 | if (extents->mask_sample_area.width == 0 || |
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| 312 | extents->mask_sample_area.height == 0) |
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| 313 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 314 | } |
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| 315 | |||
| 316 | return CAIRO_INT_STATUS_SUCCESS; |
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| 317 | } |
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| 318 | |||
| 319 | cairo_int_status_t |
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| 320 | _cairo_composite_rectangles_init_for_mask (cairo_composite_rectangles_t *extents, |
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| 321 | cairo_surface_t*surface, |
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| 322 | cairo_operator_t op, |
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| 323 | const cairo_pattern_t *source, |
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| 324 | const cairo_pattern_t *mask, |
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| 325 | const cairo_clip_t *clip) |
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| 326 | { |
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| 327 | if (! _cairo_composite_rectangles_init (extents, |
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| 328 | surface, op, source, clip)) |
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| 329 | { |
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| 330 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 331 | } |
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| 332 | |||
| 333 | extents->original_mask_pattern = mask; |
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| 334 | _cairo_composite_reduce_pattern (mask, &extents->mask_pattern); |
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| 335 | _cairo_pattern_get_extents (&extents->mask_pattern.base, &extents->mask); |
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| 336 | |||
| 337 | return _cairo_composite_rectangles_intersect (extents, clip); |
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| 338 | } |
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| 339 | |||
| 340 | cairo_int_status_t |
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| 341 | _cairo_composite_rectangles_init_for_stroke (cairo_composite_rectangles_t *extents, |
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| 342 | cairo_surface_t *surface, |
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| 343 | cairo_operator_t op, |
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| 344 | const cairo_pattern_t *source, |
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| 345 | const cairo_path_fixed_t *path, |
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| 346 | const cairo_stroke_style_t *style, |
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| 347 | const cairo_matrix_t *ctm, |
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| 348 | const cairo_clip_t *clip) |
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| 349 | { |
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| 350 | if (! _cairo_composite_rectangles_init (extents, |
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| 351 | surface, op, source, clip)) |
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| 352 | { |
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| 353 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 354 | } |
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| 355 | |||
| 356 | _cairo_path_fixed_approximate_stroke_extents (path, style, ctm, &extents->mask); |
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| 357 | |||
| 358 | return _cairo_composite_rectangles_intersect (extents, clip); |
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| 359 | } |
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| 360 | |||
| 361 | cairo_int_status_t |
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| 362 | _cairo_composite_rectangles_init_for_fill (cairo_composite_rectangles_t *extents, |
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| 363 | cairo_surface_t *surface, |
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| 364 | cairo_operator_t op, |
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| 365 | const cairo_pattern_t *source, |
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| 366 | const cairo_path_fixed_t *path, |
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| 367 | const cairo_clip_t *clip) |
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| 368 | { |
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| 369 | if (! _cairo_composite_rectangles_init (extents, |
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| 370 | surface, op, source, clip)) |
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| 371 | { |
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| 372 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 373 | } |
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| 374 | |||
| 375 | _cairo_path_fixed_approximate_fill_extents (path, &extents->mask); |
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| 376 | |||
| 377 | return _cairo_composite_rectangles_intersect (extents, clip); |
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| 378 | } |
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| 379 | |||
| 380 | cairo_int_status_t |
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| 381 | _cairo_composite_rectangles_init_for_polygon (cairo_composite_rectangles_t *extents, |
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| 382 | cairo_surface_t *surface, |
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| 383 | cairo_operator_t op, |
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| 384 | const cairo_pattern_t *source, |
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| 385 | const cairo_polygon_t *polygon, |
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| 386 | const cairo_clip_t *clip) |
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| 387 | { |
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| 388 | if (! _cairo_composite_rectangles_init (extents, |
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| 389 | surface, op, source, clip)) |
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| 390 | { |
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| 391 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 392 | } |
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| 393 | |||
| 394 | _cairo_box_round_to_rectangle (&polygon->extents, &extents->mask); |
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| 395 | return _cairo_composite_rectangles_intersect (extents, clip); |
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| 396 | } |
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| 397 | |||
| 398 | cairo_int_status_t |
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| 399 | _cairo_composite_rectangles_init_for_boxes (cairo_composite_rectangles_t *extents, |
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| 400 | cairo_surface_t *surface, |
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| 401 | cairo_operator_t op, |
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| 402 | const cairo_pattern_t *source, |
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| 403 | const cairo_boxes_t *boxes, |
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| 404 | const cairo_clip_t *clip) |
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| 405 | { |
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| 406 | cairo_box_t box; |
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| 407 | |||
| 408 | if (! _cairo_composite_rectangles_init (extents, |
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| 409 | surface, op, source, clip)) |
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| 410 | { |
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| 411 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 412 | } |
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| 413 | |||
| 414 | _cairo_boxes_extents (boxes, &box); |
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| 415 | _cairo_box_round_to_rectangle (&box, &extents->mask); |
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| 416 | return _cairo_composite_rectangles_intersect (extents, clip); |
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| 417 | } |
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| 418 | |||
| 419 | cairo_int_status_t |
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| 420 | _cairo_composite_rectangles_init_for_glyphs (cairo_composite_rectangles_t *extents, |
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| 421 | cairo_surface_t *surface, |
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| 422 | cairo_operator_t op, |
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| 423 | const cairo_pattern_t *source, |
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| 424 | cairo_scaled_font_t *scaled_font, |
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| 425 | cairo_glyph_t *glyphs, |
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| 426 | int num_glyphs, |
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| 427 | const cairo_clip_t *clip, |
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| 428 | cairo_bool_t *overlap) |
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| 429 | { |
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| 430 | cairo_status_t status; |
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| 431 | |||
| 432 | if (! _cairo_composite_rectangles_init (extents, surface, op, source, clip)) |
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| 433 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 434 | |||
| 435 | /* Computing the exact bbox and the overlap is expensive. |
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| 436 | * First perform a cheap test to see if the glyphs are all clipped out. |
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| 437 | */ |
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| 438 | if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK && |
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| 439 | _cairo_scaled_font_glyph_approximate_extents (scaled_font, |
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| 440 | glyphs, num_glyphs, |
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| 441 | &extents->mask)) |
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| 442 | { |
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| 443 | if (! _cairo_rectangle_intersect (&extents->bounded, &extents->mask)) |
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| 444 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
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| 445 | } |
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| 446 | |||
| 447 | status = _cairo_scaled_font_glyph_device_extents (scaled_font, |
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| 448 | glyphs, num_glyphs, |
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| 449 | &extents->mask, |
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| 450 | overlap); |
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| 451 | if (unlikely (status)) |
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| 452 | return status; |
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| 453 | |||
| 454 | if (overlap && *overlap && |
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| 455 | scaled_font->options.antialias == CAIRO_ANTIALIAS_NONE && |
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| 456 | _cairo_pattern_is_opaque_solid (&extents->source_pattern.base)) |
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| 457 | { |
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| 458 | *overlap = FALSE; |
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| 459 | } |
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| 460 | |||
| 461 | return _cairo_composite_rectangles_intersect (extents, clip); |
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| 462 | } |
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| 463 | |||
| 464 | cairo_bool_t |
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| 465 | _cairo_composite_rectangles_can_reduce_clip (cairo_composite_rectangles_t *composite, |
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| 466 | cairo_clip_t *clip) |
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| 467 | { |
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| 468 | cairo_rectangle_int_t extents; |
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| 469 | cairo_box_t box; |
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| 470 | |||
| 471 | if (clip == NULL) |
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| 472 | return TRUE; |
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| 473 | |||
| 474 | extents = composite->destination; |
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| 475 | if (composite->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE) |
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| 476 | _cairo_rectangle_intersect (&extents, &composite->source); |
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| 477 | if (composite->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) |
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| 478 | _cairo_rectangle_intersect (&extents, &composite->mask); |
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| 479 | |||
| 480 | _cairo_box_from_rectangle (&box, &extents); |
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| 481 | return _cairo_clip_contains_box (clip, &box); |
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| 482 | } |
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| 483 | |||
| 484 | cairo_int_status_t |
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| 485 | _cairo_composite_rectangles_add_to_damage (cairo_composite_rectangles_t *composite, |
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| 486 | cairo_boxes_t *damage) |
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| 487 | { |
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| 488 | cairo_int_status_t status; |
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| 489 | int n; |
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| 490 | |||
| 491 | for (n = 0; n < composite->clip->num_boxes; n++) { |
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| 492 | status = _cairo_boxes_add (damage, |
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| 493 | CAIRO_ANTIALIAS_NONE, |
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| 494 | &composite->clip->boxes[n]); |
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| 495 | if (unlikely (status)) |
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| 496 | return status; |
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| 497 | } |
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| 498 | |||
| 499 | return CAIRO_INT_STATUS_SUCCESS; |
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| 500 | } |