2 * Copyright © 2008 Chris Wilson
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Chris Wilson not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Chris Wilson makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Chris Wilson <chris@chris-wilson.co.uk>
26 /* This test tries to emulate the behaviour of most toolkits; it tries
27 * to simulate typical usage of a single surface with multiple exposures.
29 * The first goal of the test is to reproduce the XSetClipMask(NULL) bug
30 * reintroduced in 1.6.2 (but was originally fixed in 40558cb15). As I've
31 * made the same mistake again, it is worth adding a regression test...
39 #include "cairo-test.h"
41 #include "buffer-diff.h"
46 static const char *png_filename = "romedalen.png";
49 draw_mask (cairo_t *cr)
51 cairo_surface_t *surface;
54 surface = cairo_surface_create_similar (cairo_get_group_target (cr),
57 cr2 = cairo_create (surface);
58 cairo_surface_destroy (surface);
68 cairo_move_to (cr2, 0, 25);
69 cairo_line_to (cr2, 50, 25);
70 cairo_move_to (cr2, 25, 0);
71 cairo_line_to (cr2, 25, 50);
72 cairo_set_source_rgb (cr2, 1, 1, 1);
75 cairo_set_source_rgb (cr, 1, 0, 0);
76 cairo_mask_surface (cr, cairo_get_target (cr2), 50, 50);
80 static cairo_surface_t *
81 clone_similar_surface (cairo_surface_t * target, cairo_surface_t *surface)
84 cairo_surface_t *similar;
86 similar = cairo_surface_create_similar (target,
87 cairo_surface_get_content (surface),
88 cairo_image_surface_get_width (surface),
89 cairo_image_surface_get_height (surface));
91 cr = cairo_create (similar);
92 cairo_surface_destroy (similar);
94 cairo_set_source_surface (cr, surface, 0, 0);
95 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
98 similar = cairo_surface_reference (cairo_get_target (cr));
105 draw_image (const cairo_test_context_t *ctx,
107 cairo_surface_t *image)
109 cairo_set_source_surface (cr, image, 0, 0);
110 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
115 draw (const cairo_test_context_t *ctx,
117 cairo_surface_t *image,
118 cairo_rectangle_t *region,
122 if (region != NULL) {
124 for (i = 0; i < n_regions; i++) {
126 region[i].x, region[i].y,
127 region[i].width, region[i].height);
131 cairo_push_group (cr);
132 draw_image (ctx, cr, image);
134 cairo_pop_group_to_source (cr);
135 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
140 static cairo_test_status_t
141 draw_func (cairo_t *cr, int width, int height)
143 cairo_rectangle_t region[4];
144 const cairo_test_context_t *ctx;
145 cairo_surface_t *source, *image;
148 ctx = cairo_test_get_context (cr);
150 source = cairo_test_create_surface_from_png (ctx, png_filename);
151 image = clone_similar_surface (cairo_get_group_target (cr), source);
152 cairo_surface_destroy (source);
154 cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR);
155 draw (ctx, cr, image, NULL, 0);
156 for (i = 0; i < NLOOPS; i++) {
157 for (j = 0; j < NLOOPS; j++) {
158 region[0].x = i * SIZE / NLOOPS;
159 region[0].y = i * SIZE / NLOOPS;
160 region[0].width = SIZE / 4;
161 region[0].height = SIZE / 4;
163 region[1].x = j * SIZE / NLOOPS;
164 region[1].y = j * SIZE / NLOOPS;
165 region[1].width = SIZE / 4;
166 region[1].height = SIZE / 4;
168 region[2].x = i * SIZE / NLOOPS;
169 region[2].y = j * SIZE / NLOOPS;
170 region[2].width = SIZE / 4;
171 region[2].height = SIZE / 4;
173 region[3].x = j * SIZE / NLOOPS;
174 region[3].y = i * SIZE / NLOOPS;
175 region[3].width = SIZE / 4;
176 region[3].height = SIZE / 4;
178 draw (ctx, cr, image, region, 4);
182 cairo_pop_group_to_source (cr);
183 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
186 cairo_surface_destroy (image);
188 return CAIRO_TEST_SUCCESS;
191 CAIRO_TEST (xlib_expose_event,
192 "Emulate a typical expose event",
193 "xlib", /* keywords */
194 NULL, /* requirements */