/* 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 help exercise the paginated-surface paths in cairo. * * The defining feature of this backend is that it uses a paginated * surface to record all operations, and then replays everything to an * image surface. * * It's possible that this code might serve as a good starting point * for someone working on bringing up a new paginated-surface-based * backend. */ #include "test-paginated-surface.h" #include "cairoint.h" #include "cairo-paginated-surface-private.h" typedef struct _test_paginated_surface { cairo_surface_t base; cairo_surface_t *target; cairo_paginated_mode_t paginated_mode; } test_paginated_surface_t; static const cairo_surface_backend_t test_paginated_surface_backend; static const cairo_paginated_surface_backend_t test_paginated_surface_paginated_backend; cairo_surface_t * _test_paginated_surface_create_for_data (unsigned char *data, cairo_content_t content, int width, int height, int stride) { cairo_status_t status; cairo_surface_t *target; test_paginated_surface_t *surface; target = _cairo_image_surface_create_for_data_with_content (data, content, width, height, stride); status = cairo_surface_status (target); if (status) { _cairo_error (status); return (cairo_surface_t *) &_cairo_surface_nil; } surface = malloc (sizeof (test_paginated_surface_t)); if (surface == NULL) { _cairo_error (CAIRO_STATUS_NO_MEMORY); return (cairo_surface_t *) &_cairo_surface_nil; } _cairo_surface_init (&surface->base, &test_paginated_surface_backend, content); surface->target = target; return _cairo_paginated_surface_create (&surface->base, content, width, height, &test_paginated_surface_paginated_backend); } static cairo_status_t _test_paginated_surface_finish (void *abstract_surface) { test_paginated_surface_t *surface = abstract_surface; cairo_surface_destroy (surface->target); return CAIRO_STATUS_SUCCESS; } static cairo_int_status_t _test_paginated_surface_set_clip_region (void *abstract_surface, pixman_region16_t *region) { test_paginated_surface_t *surface = abstract_surface; if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) return CAIRO_STATUS_SUCCESS; /* XXX: The whole surface backend clipping interface is a giant * disaster right now. In particular, its uncleanness shows up * when trying to implement one surface that wraps another one (as * we are doing here). * * Here are two of the problems that show up: * * 1. The most critical piece of information in all this stuff, * the "clip" isn't getting passed to the backend * functions. Instead the generic surface layer is caching that as * surface->clip. This is a problem for surfaces like this one * that do wrapping. Our base surface will have the clip set, but * our target's surface will not. * * 2. We're here in our backend's set_clip_region function, and we * want to call into our target surface's set_clip_region. * Generally, we would do this by calling an equivalent * _cairo_surface function, but _cairo_surface_set_clip_region * does not have the same signature/semantics, (it has the * clip_serial stuff as well). * * We kludge around each of these by manually copying the clip * object from our base surface into the target's base surface * (yuck!) and by reaching directly into the image surface's * set_clip_region instead of calling into the generic * _cairo_surface_set_clip_region (double yuck!). */ surface->target->clip = surface->base.clip; return _cairo_image_surface_set_clip_region (surface->target, region); } static cairo_int_status_t _test_paginated_surface_get_extents (void *abstract_surface, cairo_rectangle_int16_t *rectangle) { test_paginated_surface_t *surface = abstract_surface; return _cairo_surface_get_extents (surface->target, rectangle); } static cairo_int_status_t _test_paginated_surface_paint (void *abstract_surface, cairo_operator_t op, cairo_pattern_t *source) { test_paginated_surface_t *surface = abstract_surface; if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) return CAIRO_STATUS_SUCCESS; return _cairo_surface_paint (surface->target, op, source); } static cairo_int_status_t _test_paginated_surface_mask (void *abstract_surface, cairo_operator_t op, cairo_pattern_t *source, cairo_pattern_t *mask) { test_paginated_surface_t *surface = abstract_surface; if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) return CAIRO_STATUS_SUCCESS; return _cairo_surface_mask (surface->target, op, source, mask); } static cairo_int_status_t _test_paginated_surface_stroke (void *abstract_surface, cairo_operator_t op, cairo_pattern_t *source, cairo_path_fixed_t *path, cairo_stroke_style_t *style, cairo_matrix_t *ctm, cairo_matrix_t *ctm_inverse, double tolerance, cairo_antialias_t antialias) { test_paginated_surface_t *surface = abstract_surface; if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) return CAIRO_STATUS_SUCCESS; return _cairo_surface_stroke (surface->target, op, source, path, style, ctm, ctm_inverse, tolerance, antialias); } static cairo_int_status_t _test_paginated_surface_fill (void *abstract_surface, cairo_operator_t op, cairo_pattern_t *source, cairo_path_fixed_t *path, cairo_fill_rule_t fill_rule, double tolerance, cairo_antialias_t antialias) { test_paginated_surface_t *surface = abstract_surface; if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) return CAIRO_STATUS_SUCCESS; return _cairo_surface_fill (surface->target, op, source, path, fill_rule, tolerance, antialias); } static cairo_int_status_t _test_paginated_surface_show_glyphs (void *abstract_surface, cairo_operator_t op, cairo_pattern_t *source, cairo_glyph_t *glyphs, int num_glyphs, cairo_scaled_font_t *scaled_font) { test_paginated_surface_t *surface = abstract_surface; if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) return CAIRO_STATUS_SUCCESS; return _cairo_surface_show_glyphs (surface->target, op, source, glyphs, num_glyphs, scaled_font); } static void _test_paginated_surface_set_paginated_mode (void *abstract_surface, cairo_paginated_mode_t mode) { test_paginated_surface_t *surface = abstract_surface; surface->paginated_mode = mode; } static const cairo_surface_backend_t test_paginated_surface_backend = { CAIRO_INTERNAL_SURFACE_TYPE_TEST_PAGINATED, /* Since we are a paginated user, we get to regard most of the * surface backend interface as historical cruft and ignore it. */ NULL, /* create_similar */ _test_paginated_surface_finish, NULL, /* acquire_source_image */ NULL, /* release_source_image */ NULL, /* acquire_dest_image */ NULL, /* release_dest_image */ NULL, /* clone_similar */ NULL, /* composite */ NULL, /* fill_rectangles */ NULL, /* composite_trapezoids */ NULL, /* copy_page */ NULL, /* show_page */ _test_paginated_surface_set_clip_region, NULL, /* intersect_clip_path */ _test_paginated_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 */ /* Here is the more "modern" section of the surface backend * interface which is mostly just drawing functions */ _test_paginated_surface_paint, _test_paginated_surface_mask, _test_paginated_surface_stroke, _test_paginated_surface_fill, _test_paginated_surface_show_glyphs, NULL /* snapshot */ }; static const cairo_paginated_surface_backend_t test_paginated_surface_paginated_backend = { NULL, /* start_page */ _test_paginated_surface_set_paginated_mode };