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authorPeter Breitenlohner <peb@mppmu.mpg.de>2014-10-15 07:49:29 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2014-10-15 07:49:29 +0000
commitf30e59e50f4dc8d3b3d043346af5b1beaff3e313 (patch)
tree370069828aa09ea4fa28477458e05e8fc649e1d7 /Build/source/libs/cairo/cairo-1.12.16/src/cairo-mask-compositor.c
parentf8c3097b508413f6171ad5332227256e32daddd1 (diff)
cairo 1.14.0
git-svn-id: svn://tug.org/texlive/trunk@35377 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/cairo/cairo-1.12.16/src/cairo-mask-compositor.c')
-rw-r--r--Build/source/libs/cairo/cairo-1.12.16/src/cairo-mask-compositor.c1479
1 files changed, 0 insertions, 1479 deletions
diff --git a/Build/source/libs/cairo/cairo-1.12.16/src/cairo-mask-compositor.c b/Build/source/libs/cairo/cairo-1.12.16/src/cairo-mask-compositor.c
deleted file mode 100644
index d0be1449d3f..00000000000
--- a/Build/source/libs/cairo/cairo-1.12.16/src/cairo-mask-compositor.c
+++ /dev/null
@@ -1,1479 +0,0 @@
-/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
-/* cairo - a vector graphics library with display and print output
- *
- * Copyright © 2002 University of Southern California
- * Copyright © 2005 Red Hat, Inc.
- * Copyright © 2011 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):
- * Carl D. Worth <cworth@cworth.org>
- * Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
- * Chris Wilson <chris@chris-wilson.co.uk>
- */
-
-/* This compositor renders the shape to a mask using an image surface
- * then calls composite.
- */
-
-#include "cairoint.h"
-
-#include "cairo-clip-inline.h"
-#include "cairo-compositor-private.h"
-#include "cairo-image-surface-private.h"
-#include "cairo-pattern-inline.h"
-#include "cairo-region-private.h"
-#include "cairo-surface-observer-private.h"
-#include "cairo-surface-offset-private.h"
-#include "cairo-surface-snapshot-private.h"
-#include "cairo-surface-subsurface-private.h"
-
-typedef cairo_int_status_t
-(*draw_func_t) (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- void *closure,
- cairo_operator_t op,
- const cairo_pattern_t *src,
- const cairo_rectangle_int_t *src_sample,
- int dst_x,
- int dst_y,
- const cairo_rectangle_int_t *extents,
- cairo_clip_t *clip);
-
-static void do_unaligned_row(void (*blt)(void *closure,
- int16_t x, int16_t y,
- int16_t w, int16_t h,
- uint16_t coverage),
- void *closure,
- const cairo_box_t *b,
- int tx, int y, int h,
- uint16_t coverage)
-{
- int x1 = _cairo_fixed_integer_part (b->p1.x) - tx;
- int x2 = _cairo_fixed_integer_part (b->p2.x) - tx;
- if (x2 > x1) {
- if (! _cairo_fixed_is_integer (b->p1.x)) {
- blt(closure, x1, y, 1, h,
- coverage * (256 - _cairo_fixed_fractional_part (b->p1.x)));
- x1++;
- }
-
- if (x2 > x1)
- blt(closure, x1, y, x2-x1, h, (coverage << 8) - (coverage >> 8));
-
- if (! _cairo_fixed_is_integer (b->p2.x))
- blt(closure, x2, y, 1, h,
- coverage * _cairo_fixed_fractional_part (b->p2.x));
- } else
- blt(closure, x1, y, 1, h,
- coverage * (b->p2.x - b->p1.x));
-}
-
-static void do_unaligned_box(void (*blt)(void *closure,
- int16_t x, int16_t y,
- int16_t w, int16_t h,
- uint16_t coverage),
- void *closure,
- const cairo_box_t *b, int tx, int ty)
-{
- int y1 = _cairo_fixed_integer_part (b->p1.y) - ty;
- int y2 = _cairo_fixed_integer_part (b->p2.y) - ty;
- if (y2 > y1) {
- if (! _cairo_fixed_is_integer (b->p1.y)) {
- do_unaligned_row(blt, closure, b, tx, y1, 1,
- 256 - _cairo_fixed_fractional_part (b->p1.y));
- y1++;
- }
-
- if (y2 > y1)
- do_unaligned_row(blt, closure, b, tx, y1, y2-y1, 256);
-
- if (! _cairo_fixed_is_integer (b->p2.y))
- do_unaligned_row(blt, closure, b, tx, y2, 1,
- _cairo_fixed_fractional_part (b->p2.y));
- } else
- do_unaligned_row(blt, closure, b, tx, y1, 1,
- b->p2.y - b->p1.y);
-}
-
-struct blt_in {
- const cairo_mask_compositor_t *compositor;
- cairo_surface_t *dst;
-};
-
-static void blt_in(void *closure,
- int16_t x, int16_t y,
- int16_t w, int16_t h,
- uint16_t coverage)
-{
- struct blt_in *info = closure;
- cairo_color_t color;
- cairo_rectangle_int_t rect;
-
- if (coverage == 0xffff)
- return;
-
- rect.x = x;
- rect.y = y;
- rect.width = w;
- rect.height = h;
-
- _cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double) 0xffff);
- info->compositor->fill_rectangles (info->dst, CAIRO_OPERATOR_IN,
- &color, &rect, 1);
-}
-
-static cairo_surface_t *
-create_composite_mask (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- void *draw_closure,
- draw_func_t draw_func,
- draw_func_t mask_func,
- const cairo_composite_rectangles_t *extents)
-{
- cairo_surface_t *surface;
- cairo_int_status_t status;
- struct blt_in info;
- int i;
-
- surface = _cairo_surface_create_similar_scratch (dst, CAIRO_CONTENT_ALPHA,
- extents->bounded.width,
- extents->bounded.height);
- if (unlikely (surface->status))
- return surface;
-
- status = compositor->acquire (surface);
- if (unlikely (status)) {
- cairo_surface_destroy (surface);
- return _cairo_int_surface_create_in_error (status);
- }
-
- if (!surface->is_clear) {
- cairo_rectangle_int_t rect;
-
- rect.x = rect.y = 0;
- rect.width = extents->bounded.width;
- rect.height = extents->bounded.height;
-
- status = compositor->fill_rectangles (surface, CAIRO_OPERATOR_CLEAR,
- CAIRO_COLOR_TRANSPARENT,
- &rect, 1);
- if (unlikely (status))
- goto error;
- }
-
- if (mask_func) {
- status = mask_func (compositor, surface, draw_closure,
- CAIRO_OPERATOR_SOURCE, NULL, NULL,
- extents->bounded.x, extents->bounded.y,
- &extents->bounded, extents->clip);
- if (likely (status != CAIRO_INT_STATUS_UNSUPPORTED))
- goto out;
- }
-
- /* Is it worth setting the clip region here? */
- status = draw_func (compositor, surface, draw_closure,
- CAIRO_OPERATOR_ADD, NULL, NULL,
- extents->bounded.x, extents->bounded.y,
- &extents->bounded, NULL);
- if (unlikely (status))
- goto error;
-
- info.compositor = compositor;
- info.dst = surface;
- for (i = 0; i < extents->clip->num_boxes; i++) {
- cairo_box_t *b = &extents->clip->boxes[i];
-
- if (! _cairo_fixed_is_integer (b->p1.x) ||
- ! _cairo_fixed_is_integer (b->p1.y) ||
- ! _cairo_fixed_is_integer (b->p2.x) ||
- ! _cairo_fixed_is_integer (b->p2.y))
- {
- do_unaligned_box(blt_in, &info, b,
- extents->bounded.x,
- extents->bounded.y);
- }
- }
-
- if (extents->clip->path != NULL) {
- status = _cairo_clip_combine_with_surface (extents->clip, surface,
- extents->bounded.x,
- extents->bounded.y);
- if (unlikely (status))
- goto error;
- }
-
-out:
- compositor->release (surface);
- surface->is_clear = FALSE;
- return surface;
-
-error:
- compositor->release (surface);
- if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
- cairo_surface_destroy (surface);
- surface = _cairo_int_surface_create_in_error (status);
- }
- return surface;
-}
-
-/* Handles compositing with a clip surface when the operator allows
- * us to combine the clip with the mask
- */
-static cairo_status_t
-clip_and_composite_with_mask (const cairo_mask_compositor_t *compositor,
- void *draw_closure,
- draw_func_t draw_func,
- draw_func_t mask_func,
- cairo_operator_t op,
- cairo_pattern_t *pattern,
- const cairo_composite_rectangles_t*extents)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_surface_t *mask, *src;
- int src_x, src_y;
-
- mask = create_composite_mask (compositor, dst, draw_closure,
- draw_func, mask_func,
- extents);
- if (unlikely (mask->status))
- return mask->status;
-
- if (pattern != NULL || dst->content != CAIRO_CONTENT_ALPHA) {
- src = compositor->pattern_to_surface (dst,
- &extents->source_pattern.base,
- FALSE,
- &extents->bounded,
- &extents->source_sample_area,
- &src_x, &src_y);
- if (unlikely (src->status)) {
- cairo_surface_destroy (mask);
- return src->status;
- }
-
- compositor->composite (dst, op, src, mask,
- extents->bounded.x + src_x,
- extents->bounded.y + src_y,
- 0, 0,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
-
- cairo_surface_destroy (src);
- } else {
- compositor->composite (dst, op, mask, NULL,
- 0, 0,
- 0, 0,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
- }
- cairo_surface_destroy (mask);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_surface_t *
-get_clip_source (const cairo_mask_compositor_t *compositor,
- cairo_clip_t *clip,
- cairo_surface_t *dst,
- const cairo_rectangle_int_t *bounds,
- int *out_x, int *out_y)
-{
- cairo_surface_pattern_t pattern;
- cairo_rectangle_int_t r;
- cairo_surface_t *surface;
-
- surface = _cairo_clip_get_image (clip, dst, bounds);
- if (unlikely (surface->status))
- return surface;
-
- _cairo_pattern_init_for_surface (&pattern, surface);
- pattern.base.filter = CAIRO_FILTER_NEAREST;
- cairo_surface_destroy (surface);
-
- r.x = r.y = 0;
- r.width = bounds->width;
- r.height = bounds->height;
-
- surface = compositor->pattern_to_surface (dst, &pattern.base, TRUE,
- &r, &r, out_x, out_y);
- _cairo_pattern_fini (&pattern.base);
-
- *out_x += -bounds->x;
- *out_y += -bounds->y;
- return surface;
-}
-
-/* Handles compositing with a clip surface when we have to do the operation
- * in two pieces and combine them together.
- */
-static cairo_status_t
-clip_and_composite_combine (const cairo_mask_compositor_t *compositor,
- void *draw_closure,
- draw_func_t draw_func,
- cairo_operator_t op,
- const cairo_pattern_t *pattern,
- const cairo_composite_rectangles_t*extents)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_surface_t *tmp, *clip;
- cairo_status_t status;
- int clip_x, clip_y;
-
- tmp = _cairo_surface_create_similar_scratch (dst, dst->content,
- extents->bounded.width,
- extents->bounded.height);
- if (unlikely (tmp->status))
- return tmp->status;
-
- compositor->composite (tmp, CAIRO_OPERATOR_SOURCE, dst, NULL,
- extents->bounded.x, extents->bounded.y,
- 0, 0,
- 0, 0,
- extents->bounded.width, extents->bounded.height);
-
- status = draw_func (compositor, tmp, draw_closure, op,
- pattern, &extents->source_sample_area,
- extents->bounded.x, extents->bounded.y,
- &extents->bounded, NULL);
- if (unlikely (status))
- goto cleanup;
-
- clip = get_clip_source (compositor,
- extents->clip, dst, &extents->bounded,
- &clip_x, &clip_y);
- if (unlikely ((status = clip->status)))
- goto cleanup;
-
- if (dst->is_clear) {
- compositor->composite (dst, CAIRO_OPERATOR_SOURCE, tmp, clip,
- 0, 0,
- clip_x, clip_y,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
- } else {
- /* Punch the clip out of the destination */
- compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, clip, NULL,
- clip_x, clip_y,
- 0, 0,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
-
- /* Now add the two results together */
- compositor->composite (dst, CAIRO_OPERATOR_ADD, tmp, clip,
- 0, 0,
- clip_x, clip_y,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
- }
- cairo_surface_destroy (clip);
-
-cleanup:
- cairo_surface_destroy (tmp);
- return status;
-}
-
-/* Handles compositing for %CAIRO_OPERATOR_SOURCE, which is special; it's
- * defined as (src IN mask IN clip) ADD (dst OUT (mask IN clip))
- */
-static cairo_status_t
-clip_and_composite_source (const cairo_mask_compositor_t *compositor,
- void *draw_closure,
- draw_func_t draw_func,
- draw_func_t mask_func,
- cairo_pattern_t *pattern,
- const cairo_composite_rectangles_t *extents)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_surface_t *mask, *src;
- int src_x, src_y;
-
- /* Create a surface that is mask IN clip */
- mask = create_composite_mask (compositor, dst, draw_closure,
- draw_func, mask_func,
- extents);
- if (unlikely (mask->status))
- return mask->status;
-
- src = compositor->pattern_to_surface (dst,
- pattern,
- FALSE,
- &extents->bounded,
- &extents->source_sample_area,
- &src_x, &src_y);
- if (unlikely (src->status)) {
- cairo_surface_destroy (mask);
- return src->status;
- }
-
- if (dst->is_clear) {
- compositor->composite (dst, CAIRO_OPERATOR_SOURCE, src, mask,
- extents->bounded.x + src_x, extents->bounded.y + src_y,
- 0, 0,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
- } else {
- /* Compute dest' = dest OUT (mask IN clip) */
- compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
- 0, 0, 0, 0,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
-
- /* Now compute (src IN (mask IN clip)) ADD dest' */
- compositor->composite (dst, CAIRO_OPERATOR_ADD, src, mask,
- extents->bounded.x + src_x, extents->bounded.y + src_y,
- 0, 0,
- extents->bounded.x, extents->bounded.y,
- extents->bounded.width, extents->bounded.height);
- }
-
- cairo_surface_destroy (src);
- cairo_surface_destroy (mask);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_bool_t
-can_reduce_alpha_op (cairo_operator_t op)
-{
- int iop = op;
- switch (iop) {
- case CAIRO_OPERATOR_OVER:
- case CAIRO_OPERATOR_SOURCE:
- case CAIRO_OPERATOR_ADD:
- return TRUE;
- default:
- return FALSE;
- }
-}
-
-static cairo_bool_t
-reduce_alpha_op (cairo_surface_t *dst,
- cairo_operator_t op,
- const cairo_pattern_t *pattern)
-{
- return dst->is_clear &&
- dst->content == CAIRO_CONTENT_ALPHA &&
- _cairo_pattern_is_opaque_solid (pattern) &&
- can_reduce_alpha_op (op);
-}
-
-static cairo_status_t
-fixup_unbounded (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- const cairo_composite_rectangles_t *extents)
-{
- cairo_rectangle_int_t rects[4];
- int n;
-
- if (extents->bounded.width == extents->unbounded.width &&
- extents->bounded.height == extents->unbounded.height)
- {
- return CAIRO_STATUS_SUCCESS;
- }
-
- n = 0;
- if (extents->bounded.width == 0 || extents->bounded.height == 0) {
- rects[n].x = extents->unbounded.x;
- rects[n].width = extents->unbounded.width;
- rects[n].y = extents->unbounded.y;
- rects[n].height = extents->unbounded.height;
- n++;
- } else {
- /* top */
- if (extents->bounded.y != extents->unbounded.y) {
- rects[n].x = extents->unbounded.x;
- rects[n].width = extents->unbounded.width;
- rects[n].y = extents->unbounded.y;
- rects[n].height = extents->bounded.y - extents->unbounded.y;
- n++;
- }
- /* left */
- if (extents->bounded.x != extents->unbounded.x) {
- rects[n].x = extents->unbounded.x;
- rects[n].width = extents->bounded.x - extents->unbounded.x;
- rects[n].y = extents->bounded.y;
- rects[n].height = extents->bounded.height;
- n++;
- }
- /* right */
- if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
- rects[n].x = extents->bounded.x + extents->bounded.width;
- rects[n].width = extents->unbounded.x + extents->unbounded.width - rects[n].x;
- rects[n].y = extents->bounded.y;
- rects[n].height = extents->bounded.height;
- n++;
- }
- /* bottom */
- if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
- rects[n].x = extents->unbounded.x;
- rects[n].width = extents->unbounded.width;
- rects[n].y = extents->bounded.y + extents->bounded.height;
- rects[n].height = extents->unbounded.y + extents->unbounded.height - rects[n].y;
- n++;
- }
- }
-
- return compositor->fill_rectangles (dst, CAIRO_OPERATOR_CLEAR,
- CAIRO_COLOR_TRANSPARENT,
- rects, n);
-}
-
-static cairo_status_t
-fixup_unbounded_with_mask (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- const cairo_composite_rectangles_t *extents)
-{
- cairo_surface_t *mask;
- int mask_x, mask_y;
-
- mask = get_clip_source (compositor,
- extents->clip, dst, &extents->unbounded,
- &mask_x, &mask_y);
- if (unlikely (mask->status))
- return mask->status;
-
- /* top */
- if (extents->bounded.y != extents->unbounded.y) {
- int x = extents->unbounded.x;
- int y = extents->unbounded.y;
- int width = extents->unbounded.width;
- int height = extents->bounded.y - y;
-
- compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
- x + mask_x, y + mask_y,
- 0, 0,
- x, y,
- width, height);
- }
-
- /* left */
- if (extents->bounded.x != extents->unbounded.x) {
- int x = extents->unbounded.x;
- int y = extents->bounded.y;
- int width = extents->bounded.x - x;
- int height = extents->bounded.height;
-
- compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
- x + mask_x, y + mask_y,
- 0, 0,
- x, y,
- width, height);
- }
-
- /* right */
- if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
- int x = extents->bounded.x + extents->bounded.width;
- int y = extents->bounded.y;
- int width = extents->unbounded.x + extents->unbounded.width - x;
- int height = extents->bounded.height;
-
- compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
- x + mask_x, y + mask_y,
- 0, 0,
- x, y,
- width, height);
- }
-
- /* bottom */
- if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
- int x = extents->unbounded.x;
- int y = extents->bounded.y + extents->bounded.height;
- int width = extents->unbounded.width;
- int height = extents->unbounded.y + extents->unbounded.height - y;
-
- compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
- x + mask_x, y + mask_y,
- 0, 0,
- x, y,
- width, height);
- }
-
- cairo_surface_destroy (mask);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_status_t
-fixup_unbounded_boxes (const cairo_mask_compositor_t *compositor,
- const cairo_composite_rectangles_t *extents,
- cairo_boxes_t *boxes)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_boxes_t clear;
- cairo_region_t *clip_region;
- cairo_box_t box;
- cairo_status_t status;
- struct _cairo_boxes_chunk *chunk;
- int i;
-
- assert (boxes->is_pixel_aligned);
-
- clip_region = NULL;
- if (_cairo_clip_is_region (extents->clip) &&
- (clip_region = _cairo_clip_get_region (extents->clip)) &&
- cairo_region_contains_rectangle (clip_region,
- &extents->bounded) == CAIRO_REGION_OVERLAP_IN)
- clip_region = NULL;
-
-
- if (boxes->num_boxes <= 1 && clip_region == NULL)
- return fixup_unbounded (compositor, dst, extents);
-
- _cairo_boxes_init (&clear);
-
- box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
- box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
- box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
- box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
-
- if (clip_region == NULL) {
- cairo_boxes_t tmp;
-
- _cairo_boxes_init (&tmp);
-
- status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box);
- assert (status == CAIRO_STATUS_SUCCESS);
-
- tmp.chunks.next = &boxes->chunks;
- tmp.num_boxes += boxes->num_boxes;
-
- status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
- CAIRO_FILL_RULE_WINDING,
- &clear);
-
- tmp.chunks.next = NULL;
- } else {
- pixman_box32_t *pbox;
-
- pbox = pixman_region32_rectangles (&clip_region->rgn, &i);
- _cairo_boxes_limit (&clear, (cairo_box_t *) pbox, i);
-
- status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box);
- assert (status == CAIRO_STATUS_SUCCESS);
-
- for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
- for (i = 0; i < chunk->count; i++) {
- status = _cairo_boxes_add (&clear,
- CAIRO_ANTIALIAS_DEFAULT,
- &chunk->base[i]);
- if (unlikely (status)) {
- _cairo_boxes_fini (&clear);
- return status;
- }
- }
- }
-
- status = _cairo_bentley_ottmann_tessellate_boxes (&clear,
- CAIRO_FILL_RULE_WINDING,
- &clear);
- }
-
- if (likely (status == CAIRO_STATUS_SUCCESS)) {
- status = compositor->fill_boxes (dst,
- CAIRO_OPERATOR_CLEAR,
- CAIRO_COLOR_TRANSPARENT,
- &clear);
- }
-
- _cairo_boxes_fini (&clear);
-
- return status;
-}
-
-enum {
- NEED_CLIP_REGION = 0x1,
- NEED_CLIP_SURFACE = 0x2,
- FORCE_CLIP_REGION = 0x4,
-};
-
-static cairo_bool_t
-need_bounded_clip (cairo_composite_rectangles_t *extents)
-{
- unsigned int flags = NEED_CLIP_REGION;
- if (! _cairo_clip_is_region (extents->clip))
- flags |= NEED_CLIP_SURFACE;
- return flags;
-}
-
-static cairo_bool_t
-need_unbounded_clip (cairo_composite_rectangles_t *extents)
-{
- unsigned int flags = 0;
- if (! extents->is_bounded) {
- flags |= NEED_CLIP_REGION;
- if (! _cairo_clip_is_region (extents->clip))
- flags |= NEED_CLIP_SURFACE;
- }
- if (extents->clip->path != NULL)
- flags |= NEED_CLIP_SURFACE;
- return flags;
-}
-
-static cairo_status_t
-clip_and_composite (const cairo_mask_compositor_t *compositor,
- draw_func_t draw_func,
- draw_func_t mask_func,
- void *draw_closure,
- cairo_composite_rectangles_t*extents,
- unsigned int need_clip)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_operator_t op = extents->op;
- cairo_pattern_t *src = &extents->source_pattern.base;
- cairo_region_t *clip_region = NULL;
- cairo_status_t status;
-
- compositor->acquire (dst);
-
- if (need_clip & NEED_CLIP_REGION) {
- clip_region = _cairo_clip_get_region (extents->clip);
- if ((need_clip & FORCE_CLIP_REGION) == 0 &&
- _cairo_composite_rectangles_can_reduce_clip (extents,
- extents->clip))
- clip_region = NULL;
- if (clip_region != NULL) {
- status = compositor->set_clip_region (dst, clip_region);
- if (unlikely (status)) {
- compositor->release (dst);
- return status;
- }
- }
- }
-
- if (reduce_alpha_op (dst, op, &extents->source_pattern.base)) {
- op = CAIRO_OPERATOR_ADD;
- src = NULL;
- }
-
- if (op == CAIRO_OPERATOR_SOURCE) {
- status = clip_and_composite_source (compositor,
- draw_closure, draw_func, mask_func,
- src, extents);
- } else {
- if (op == CAIRO_OPERATOR_CLEAR) {
- op = CAIRO_OPERATOR_DEST_OUT;
- src = NULL;
- }
-
- if (need_clip & NEED_CLIP_SURFACE) {
- if (extents->is_bounded) {
- status = clip_and_composite_with_mask (compositor,
- draw_closure,
- draw_func,
- mask_func,
- op, src, extents);
- } else {
- status = clip_and_composite_combine (compositor,
- draw_closure,
- draw_func,
- op, src, extents);
- }
- } else {
- status = draw_func (compositor,
- dst, draw_closure,
- op, src, &extents->source_sample_area,
- 0, 0,
- &extents->bounded,
- extents->clip);
- }
- }
-
- if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) {
- if (need_clip & NEED_CLIP_SURFACE)
- status = fixup_unbounded_with_mask (compositor, dst, extents);
- else
- status = fixup_unbounded (compositor, dst, extents);
- }
-
- if (clip_region)
- compositor->set_clip_region (dst, NULL);
-
- compositor->release (dst);
-
- return status;
-}
-
-static cairo_int_status_t
-trim_extents_to_boxes (cairo_composite_rectangles_t *extents,
- cairo_boxes_t *boxes)
-{
- cairo_box_t box;
-
- _cairo_boxes_extents (boxes, &box);
- return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
-}
-
-static cairo_status_t
-upload_boxes (const cairo_mask_compositor_t *compositor,
- cairo_composite_rectangles_t *extents,
- cairo_boxes_t *boxes)
-{
- cairo_surface_t *dst = extents->surface;
- const cairo_pattern_t *source = &extents->source_pattern.base;
- cairo_surface_t *src;
- cairo_rectangle_int_t limit;
- cairo_int_status_t status;
- int tx, ty;
-
- src = _cairo_pattern_get_source ((cairo_surface_pattern_t *)source, &limit);
- if (!(src->type == CAIRO_SURFACE_TYPE_IMAGE || src->type == dst->type))
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- if (! _cairo_matrix_is_integer_translation (&source->matrix, &tx, &ty))
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- /* Check that the data is entirely within the image */
- if (extents->bounded.x + tx < limit.x || extents->bounded.y + ty < limit.y)
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- if (extents->bounded.x + extents->bounded.width + tx > limit.x + limit.width ||
- extents->bounded.y + extents->bounded.height + ty > limit.y + limit.height)
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- tx += limit.x;
- ty += limit.y;
-
- if (src->type == CAIRO_SURFACE_TYPE_IMAGE)
- status = compositor->draw_image_boxes (dst,
- (cairo_image_surface_t *)src,
- boxes, tx, ty);
- else
- status = compositor->copy_boxes (dst, src, boxes, &extents->bounded,
- tx, ty);
-
- return status;
-}
-
-static cairo_status_t
-composite_boxes (const cairo_mask_compositor_t *compositor,
- const cairo_composite_rectangles_t *extents,
- cairo_boxes_t *boxes)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_operator_t op = extents->op;
- const cairo_pattern_t *source = &extents->source_pattern.base;
- cairo_bool_t need_clip_mask = extents->clip->path != NULL;
- cairo_status_t status;
-
- if (need_clip_mask &&
- (! extents->is_bounded || op == CAIRO_OPERATOR_SOURCE))
- {
- return CAIRO_INT_STATUS_UNSUPPORTED;
- }
-
- status = compositor->acquire (dst);
- if (unlikely (status))
- return status;
-
- if (! need_clip_mask && source->type == CAIRO_PATTERN_TYPE_SOLID) {
- const cairo_color_t *color;
-
- color = &((cairo_solid_pattern_t *) source)->color;
- status = compositor->fill_boxes (dst, op, color, boxes);
- } else {
- cairo_surface_t *src, *mask = NULL;
- int src_x, src_y;
- int mask_x = 0, mask_y = 0;
-
- if (need_clip_mask) {
- mask = get_clip_source (compositor,
- extents->clip, dst, &extents->bounded,
- &mask_x, &mask_y);
- if (unlikely (mask->status))
- return mask->status;
-
- if (op == CAIRO_OPERATOR_CLEAR) {
- source = NULL;
- op = CAIRO_OPERATOR_DEST_OUT;
- }
- }
-
- if (source || mask == NULL) {
- src = compositor->pattern_to_surface (dst, source, FALSE,
- &extents->bounded,
- &extents->source_sample_area,
- &src_x, &src_y);
- } else {
- src = mask;
- src_x = mask_x;
- src_y = mask_y;
- mask = NULL;
- }
-
- status = compositor->composite_boxes (dst, op, src, mask,
- src_x, src_y,
- mask_x, mask_y,
- 0, 0,
- boxes, &extents->bounded);
-
- cairo_surface_destroy (src);
- cairo_surface_destroy (mask);
- }
-
- if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded)
- status = fixup_unbounded_boxes (compositor, extents, boxes);
-
- compositor->release (dst);
-
- return status;
-}
-
-static cairo_status_t
-clip_and_composite_boxes (const cairo_mask_compositor_t *compositor,
- cairo_composite_rectangles_t *extents,
- cairo_boxes_t *boxes)
-{
- cairo_surface_t *dst = extents->surface;
- cairo_int_status_t status;
-
- if (boxes->num_boxes == 0) {
- if (extents->is_bounded)
- return CAIRO_STATUS_SUCCESS;
-
- return fixup_unbounded_boxes (compositor, extents, boxes);
- }
-
- if (! boxes->is_pixel_aligned)
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- status = trim_extents_to_boxes (extents, boxes);
- if (unlikely (status))
- return status;
-
- if (extents->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE &&
- extents->clip->path == NULL &&
- (extents->op == CAIRO_OPERATOR_SOURCE ||
- (dst->is_clear && (extents->op == CAIRO_OPERATOR_OVER ||
- extents->op == CAIRO_OPERATOR_ADD))))
- {
- status = upload_boxes (compositor, extents, boxes);
- if (status != CAIRO_INT_STATUS_UNSUPPORTED)
- return status;
- }
-
- return composite_boxes (compositor, extents, boxes);
-}
-
-/* high-level compositor interface */
-
-static cairo_int_status_t
-_cairo_mask_compositor_paint (const cairo_compositor_t *_compositor,
- cairo_composite_rectangles_t *extents)
-{
- cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
- cairo_boxes_t boxes;
- cairo_int_status_t status;
-
- status = compositor->check_composite (extents);
- if (unlikely (status))
- return status;
-
- _cairo_clip_steal_boxes (extents->clip, &boxes);
- status = clip_and_composite_boxes (compositor, extents, &boxes);
- _cairo_clip_unsteal_boxes (extents->clip, &boxes);
-
- return status;
-}
-
-struct composite_opacity_info {
- const cairo_mask_compositor_t *compositor;
- uint8_t op;
- cairo_surface_t *dst;
- cairo_surface_t *src;
- int src_x, src_y;
- double opacity;
-};
-
-static void composite_opacity(void *closure,
- int16_t x, int16_t y,
- int16_t w, int16_t h,
- uint16_t coverage)
-{
- struct composite_opacity_info *info = closure;
- const cairo_mask_compositor_t *compositor = info->compositor;
- cairo_surface_t *mask;
- int mask_x, mask_y;
- cairo_color_t color;
- cairo_solid_pattern_t solid;
-
- _cairo_color_init_rgba (&color, 0, 0, 0, info->opacity * coverage);
- _cairo_pattern_init_solid (&solid, &color);
- mask = compositor->pattern_to_surface (info->dst, &solid.base, TRUE,
- &_cairo_unbounded_rectangle,
- &_cairo_unbounded_rectangle,
- &mask_x, &mask_y);
- if (likely (mask->status == CAIRO_STATUS_SUCCESS)) {
- if (info->src) {
- compositor->composite (info->dst, info->op, info->src, mask,
- x + info->src_x, y + info->src_y,
- mask_x, mask_y,
- x, y,
- w, h);
- } else {
- compositor->composite (info->dst, info->op, mask, NULL,
- mask_x, mask_y,
- 0, 0,
- x, y,
- w, h);
- }
- }
-
- cairo_surface_destroy (mask);
-}
-
-static cairo_int_status_t
-composite_opacity_boxes (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- void *closure,
- cairo_operator_t op,
- const cairo_pattern_t *src_pattern,
- const cairo_rectangle_int_t *src_sample,
- int dst_x,
- int dst_y,
- const cairo_rectangle_int_t *extents,
- cairo_clip_t *clip)
-{
- const cairo_solid_pattern_t *mask_pattern = closure;
- struct composite_opacity_info info;
- int i;
-
- assert (clip);
-
- info.compositor = compositor;
- info.op = op;
- info.dst = dst;
-
- if (src_pattern != NULL) {
- info.src = compositor->pattern_to_surface (dst, src_pattern, FALSE,
- extents, src_sample,
- &info.src_x, &info.src_y);
- if (unlikely (info.src->status))
- return info.src->status;
- } else
- info.src = NULL;
-
- info.opacity = mask_pattern->color.alpha / (double) 0xffff;
-
- /* XXX for lots of boxes create a clip region for the fully opaque areas */
- for (i = 0; i < clip->num_boxes; i++)
- do_unaligned_box(composite_opacity, &info,
- &clip->boxes[i], dst_x, dst_y);
- cairo_surface_destroy (info.src);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-struct composite_box_info {
- const cairo_mask_compositor_t *compositor;
- cairo_surface_t *dst;
- cairo_surface_t *src;
- int src_x, src_y;
- uint8_t op;
-};
-
-static void composite_box(void *closure,
- int16_t x, int16_t y,
- int16_t w, int16_t h,
- uint16_t coverage)
-{
- struct composite_box_info *info = closure;
- const cairo_mask_compositor_t *compositor = info->compositor;
-
- if (! CAIRO_ALPHA_SHORT_IS_OPAQUE (coverage)) {
- cairo_surface_t *mask;
- cairo_color_t color;
- cairo_solid_pattern_t solid;
- int mask_x, mask_y;
-
- _cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double)0xffff);
- _cairo_pattern_init_solid (&solid, &color);
-
- mask = compositor->pattern_to_surface (info->dst, &solid.base, FALSE,
- &_cairo_unbounded_rectangle,
- &_cairo_unbounded_rectangle,
- &mask_x, &mask_y);
-
- if (likely (mask->status == CAIRO_STATUS_SUCCESS)) {
- compositor->composite (info->dst, info->op, info->src, mask,
- x + info->src_x, y + info->src_y,
- mask_x, mask_y,
- x, y,
- w, h);
- }
-
- cairo_surface_destroy (mask);
- } else {
- compositor->composite (info->dst, info->op, info->src, NULL,
- x + info->src_x, y + info->src_y,
- 0, 0,
- x, y,
- w, h);
- }
-}
-
-static cairo_int_status_t
-composite_mask_clip_boxes (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- void *closure,
- cairo_operator_t op,
- const cairo_pattern_t *src_pattern,
- const cairo_rectangle_int_t *src_sample,
- int dst_x,
- int dst_y,
- const cairo_rectangle_int_t *extents,
- cairo_clip_t *clip)
-{
- cairo_composite_rectangles_t *composite = closure;
- struct composite_box_info info;
- int i;
-
- assert (src_pattern == NULL);
- assert (op == CAIRO_OPERATOR_SOURCE);
-
- info.compositor = compositor;
- info.op = CAIRO_OPERATOR_SOURCE;
- info.dst = dst;
- info.src = compositor->pattern_to_surface (dst,
- &composite->mask_pattern.base,
- FALSE, extents,
- &composite->mask_sample_area,
- &info.src_x, &info.src_y);
- if (unlikely (info.src->status))
- return info.src->status;
-
- info.src_x += dst_x;
- info.src_y += dst_y;
-
- for (i = 0; i < clip->num_boxes; i++)
- do_unaligned_box(composite_box, &info, &clip->boxes[i], dst_x, dst_y);
-
- cairo_surface_destroy (info.src);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_int_status_t
-composite_mask (const cairo_mask_compositor_t *compositor,
- cairo_surface_t *dst,
- void *closure,
- cairo_operator_t op,
- const cairo_pattern_t *src_pattern,
- const cairo_rectangle_int_t *src_sample,
- int dst_x,
- int dst_y,
- const cairo_rectangle_int_t *extents,
- cairo_clip_t *clip)
-{
- cairo_composite_rectangles_t *composite = closure;
- cairo_surface_t *src, *mask;
- int src_x, src_y;
- int mask_x, mask_y;
-
- if (src_pattern != NULL) {
- src = compositor->pattern_to_surface (dst, src_pattern, FALSE,
- extents, src_sample,
- &src_x, &src_y);
- if (unlikely (src->status))
- return src->status;
-
- mask = compositor->pattern_to_surface (dst, &composite->mask_pattern.base, TRUE,
- extents, &composite->mask_sample_area,
- &mask_x, &mask_y);
- if (unlikely (mask->status)) {
- cairo_surface_destroy (src);
- return mask->status;
- }
-
- compositor->composite (dst, op, src, mask,
- extents->x + src_x, extents->y + src_y,
- extents->x + mask_x, extents->y + mask_y,
- extents->x - dst_x, extents->y - dst_y,
- extents->width, extents->height);
-
- cairo_surface_destroy (mask);
- cairo_surface_destroy (src);
- } else {
- src = compositor->pattern_to_surface (dst, &composite->mask_pattern.base, FALSE,
- extents, &composite->mask_sample_area,
- &src_x, &src_y);
- if (unlikely (src->status))
- return src->status;
-
- compositor->composite (dst, op, src, NULL,
- extents->x + src_x, extents->y + src_y,
- 0, 0,
- extents->x - dst_x, extents->y - dst_y,
- extents->width, extents->height);
-
- cairo_surface_destroy (src);
- }
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_int_status_t
-_cairo_mask_compositor_mask (const cairo_compositor_t *_compositor,
- cairo_composite_rectangles_t *extents)
-{
- const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
- cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
-
- status = compositor->check_composite (extents);
- if (unlikely (status))
- return status;
-
- if (extents->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID &&
- extents->clip->path == NULL &&
- _cairo_clip_is_region (extents->clip)) {
- status = clip_and_composite (compositor,
- composite_opacity_boxes,
- composite_opacity_boxes,
- &extents->mask_pattern.solid,
- extents, need_unbounded_clip (extents));
- } else {
- status = clip_and_composite (compositor,
- composite_mask,
- extents->clip->path == NULL ? composite_mask_clip_boxes : NULL,
- extents,
- extents, need_bounded_clip (extents));
- }
-
- return status;
-}
-
-static cairo_int_status_t
-_cairo_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)
-{
- const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
- cairo_surface_t *mask;
- cairo_surface_pattern_t pattern;
- cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
-
- status = compositor->check_composite (extents);
- if (unlikely (status))
- return status;
-
- if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
- cairo_boxes_t boxes;
-
- _cairo_boxes_init_with_clip (&boxes, extents->clip);
- status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
- style,
- ctm,
- antialias,
- &boxes);
- if (likely (status == CAIRO_INT_STATUS_SUCCESS))
- status = clip_and_composite_boxes (compositor, extents, &boxes);
- _cairo_boxes_fini (&boxes);
- }
-
-
- if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
- mask = cairo_surface_create_similar_image (extents->surface,
- CAIRO_FORMAT_A8,
- extents->bounded.width,
- extents->bounded.height);
- if (unlikely (mask->status))
- return mask->status;
-
- 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,
- extents->clip);
- if (unlikely (status)) {
- cairo_surface_destroy (mask);
- return status;
- }
-
- _cairo_pattern_init_for_surface (&pattern, mask);
- cairo_surface_destroy (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;
- status = _cairo_surface_mask (extents->surface,
- extents->op,
- &extents->source_pattern.base,
- &pattern.base,
- extents->clip);
- _cairo_pattern_fini (&pattern.base);
- }
-
- return status;
-}
-
-static cairo_int_status_t
-_cairo_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)
-{
- const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
- cairo_surface_t *mask;
- cairo_surface_pattern_t pattern;
- cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
-
- status = compositor->check_composite (extents);
- if (unlikely (status))
- return status;
-
- if (_cairo_path_fixed_fill_is_rectilinear (path)) {
- cairo_boxes_t boxes;
-
- _cairo_boxes_init_with_clip (&boxes, extents->clip);
- status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
- fill_rule,
- antialias,
- &boxes);
- if (likely (status == CAIRO_INT_STATUS_SUCCESS))
- status = clip_and_composite_boxes (compositor, extents, &boxes);
- _cairo_boxes_fini (&boxes);
- }
-
- if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
- mask = cairo_surface_create_similar_image (extents->surface,
- CAIRO_FORMAT_A8,
- extents->bounded.width,
- extents->bounded.height);
- if (unlikely (mask->status))
- return mask->status;
-
- status = _cairo_surface_offset_fill (mask,
- extents->bounded.x,
- extents->bounded.y,
- CAIRO_OPERATOR_ADD,
- &_cairo_pattern_white.base,
- path, fill_rule, tolerance, antialias,
- extents->clip);
- if (unlikely (status)) {
- cairo_surface_destroy (mask);
- return status;
- }
-
- _cairo_pattern_init_for_surface (&pattern, mask);
- cairo_surface_destroy (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;
- status = _cairo_surface_mask (extents->surface,
- extents->op,
- &extents->source_pattern.base,
- &pattern.base,
- extents->clip);
- _cairo_pattern_fini (&pattern.base);
- }
-
- return status;
-}
-
-static cairo_int_status_t
-_cairo_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)
-{
- const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
- cairo_surface_t *mask;
- cairo_surface_pattern_t pattern;
- cairo_int_status_t status;
-
- status = compositor->check_composite (extents);
- if (unlikely (status))
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- mask = cairo_surface_create_similar_image (extents->surface,
- CAIRO_FORMAT_A8,
- extents->bounded.width,
- extents->bounded.height);
- if (unlikely (mask->status))
- return mask->status;
-
- status = _cairo_surface_offset_glyphs (mask,
- extents->bounded.x,
- extents->bounded.y,
- CAIRO_OPERATOR_ADD,
- &_cairo_pattern_white.base,
- scaled_font, glyphs, num_glyphs,
- extents->clip);
- if (unlikely (status)) {
- cairo_surface_destroy (mask);
- return status;
- }
-
- _cairo_pattern_init_for_surface (&pattern, mask);
- cairo_surface_destroy (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;
- status = _cairo_surface_mask (extents->surface,
- extents->op,
- &extents->source_pattern.base,
- &pattern.base,
- extents->clip);
- _cairo_pattern_fini (&pattern.base);
-
- return status;
-}
-
-void
-_cairo_mask_compositor_init (cairo_mask_compositor_t *compositor,
- const cairo_compositor_t *delegate)
-{
- compositor->base.delegate = delegate;
-
- compositor->base.paint = _cairo_mask_compositor_paint;
- compositor->base.mask = _cairo_mask_compositor_mask;
- compositor->base.fill = _cairo_mask_compositor_fill;
- compositor->base.stroke = _cairo_mask_compositor_stroke;
- compositor->base.glyphs = _cairo_mask_compositor_glyphs;
-}