/* cairo - a vector graphics library with display and print output * * Copyright © 2005 Red Hat, Inc * * This library is free software; you can redistribute it and/or * modify it either under the terms of the GNU Lesser General Public * License version 2.1 as published by the Free Software Foundation * (the "LGPL") or, at your option, under the terms of the Mozilla * Public License Version 1.1 (the "MPL"). If you do not alter this * notice, a recipient may use your version of this file under either * the MPL or the LGPL. * * You should have received a copy of the LGPL along with this library * in the file COPYING-LGPL-2.1; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * You should have received a copy of the MPL along with this library * in the file COPYING-MPL-1.1 * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY * OF ANY KIND, either express or implied. See the LGPL or the MPL for * the specific language governing rights and limitations. * * The Original Code is the cairo graphics library. * * The Initial Developer of the Original Code is Red Hat, Inc. * * Contributor(s): * Carl Worth */ /* This isn't a "real" surface, but just something to be used by the * test suite to test a mythical backend that uses nothing but * fallbacks. * * The defining feature of this backend is that it has as many %NULL * backend function entries as possible. The ones that aren't %NULL are * simply those that must be implemented to have working fallbacks. * (Except for create_similar---fallbacks would work fine without * that---I implemented it here in order to create as many surfaces as * possible of type test_fallback_surface_t during the test suite * run). * * It's possible that this code might serve as a good starting point * for someone working on bringing up a new backend, starting with the * minimal all-fallbacks approach and working up gradually from * there. */ #include "cairoint.h" #include "test-fallback-surface.h" typedef struct _test_fallback_surface { cairo_surface_t base; /* This is a cairo_image_surface to hold the actual contents. */ cairo_surface_t *backing; } test_fallback_surface_t; static const cairo_surface_backend_t test_fallback_surface_backend; slim_hidden_proto (_cairo_test_fallback_surface_create); cairo_surface_t * _cairo_test_fallback_surface_create (cairo_content_t content, int width, int height) { test_fallback_surface_t *surface; cairo_surface_t *backing; backing = _cairo_image_surface_create_with_content (content, width, height); if (cairo_surface_status (backing)) return backing; surface = malloc (sizeof (test_fallback_surface_t)); if (unlikely (surface == NULL)) { cairo_surface_destroy (backing); return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); } _cairo_surface_init (&surface->base, &test_fallback_surface_backend, content); surface->backing = backing; return &surface->base; } slim_hidden_def (_cairo_test_fallback_surface_create); static cairo_surface_t * _test_fallback_surface_create_similar (void *abstract_surface, cairo_content_t content, int width, int height) { assert (CAIRO_CONTENT_VALID (content)); return _cairo_test_fallback_surface_create (content, width, height); } static cairo_status_t _test_fallback_surface_finish (void *abstract_surface) { test_fallback_surface_t *surface = abstract_surface; cairo_surface_destroy (surface->backing); return CAIRO_STATUS_SUCCESS; } static cairo_status_t _test_fallback_surface_acquire_source_image (void *abstract_surface, cairo_image_surface_t **image_out, void **image_extra) { test_fallback_surface_t *surface = abstract_surface; return _cairo_surface_acquire_source_image (surface->backing, image_out, image_extra); } static void _test_fallback_surface_release_source_image (void *abstract_surface, cairo_image_surface_t *image, void *image_extra) { test_fallback_surface_t *surface = abstract_surface; _cairo_surface_release_source_image (surface->backing, image, image_extra); } static cairo_status_t _test_fallback_surface_acquire_dest_image (void *abstract_surface, cairo_rectangle_int_t *interest_rect, cairo_image_surface_t **image_out, cairo_rectangle_int_t *image_rect_out, void **image_extra) { test_fallback_surface_t *surface = abstract_surface; return _cairo_surface_acquire_dest_image (surface->backing, interest_rect, image_out, image_rect_out, image_extra); } static void _test_fallback_surface_release_dest_image (void *abstract_surface, cairo_rectangle_int_t *interest_rect, cairo_image_surface_t *image, cairo_rectangle_int_t *image_rect, void *image_extra) { test_fallback_surface_t *surface = abstract_surface; _cairo_surface_release_dest_image (surface->backing, interest_rect, image, image_rect, image_extra); } static cairo_status_t _test_fallback_surface_clone_similar (void *abstract_surface, cairo_surface_t *src, int src_x, int src_y, int width, int height, int *clone_offset_x, int *clone_offset_y, cairo_surface_t **clone_out) { test_fallback_surface_t *surface = abstract_surface; if (src->backend == surface->base.backend) { *clone_offset_x = 0; *clone_offset_y = 0; *clone_out = cairo_surface_reference (src); return CAIRO_STATUS_SUCCESS; } return CAIRO_INT_STATUS_UNSUPPORTED; } static cairo_int_status_t _test_fallback_surface_get_extents (void *abstract_surface, cairo_rectangle_int_t *rectangle) { test_fallback_surface_t *surface = abstract_surface; return _cairo_surface_get_extents (surface->backing, rectangle); } static const cairo_surface_backend_t test_fallback_surface_backend = { CAIRO_INTERNAL_SURFACE_TYPE_TEST_FALLBACK, _test_fallback_surface_create_similar, _test_fallback_surface_finish, _test_fallback_surface_acquire_source_image, _test_fallback_surface_release_source_image, _test_fallback_surface_acquire_dest_image, _test_fallback_surface_release_dest_image, _test_fallback_surface_clone_similar, NULL, /* composite */ NULL, /* fill_rectangles */ NULL, /* composite_trapezoids */ NULL, /* create_span_renderer */ NULL, /* check_span_renderer */ NULL, /* copy_page */ NULL, /* show_page */ NULL, /* set_clip_region */ NULL, /* intersect_clip_path */ _test_fallback_surface_get_extents, NULL, /* old_show_glyphs */ NULL, /* get_font_options */ NULL, /* flush */ NULL, /* mark_dirty_rectangle */ NULL, /* scaled_font_fini */ NULL, /* scaled_glyph_fini */ NULL, /* paint */ NULL, /* mask */ NULL, /* stroke */ NULL, /* fill */ NULL, /* show_glyphs */ NULL /* snapshot */ };