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Diffstat (limited to 'libs/cairo-1.16.0/test/a1-clip.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/a1-clip.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/a1-clip.c b/libs/cairo-1.16.0/test/a1-clip.c new file mode 100644 index 0000000..0e84cd3 --- /dev/null +++ b/libs/cairo-1.16.0/test/a1-clip.c @@ -0,0 +1,175 @@ +/* + * Copyright © 2008 Red Hat, Inc. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Author: Carl D. Worth <cworth@cworth.org> + */ + +#include "cairo-test.h" + +#define POINTS 10 +#define STEP (1.0 / POINTS) +#define PAD 1 +#define WIDTH (PAD + POINTS * 2 + PAD) +#define HEIGHT (WIDTH) + +static cairo_test_status_t +paint (cairo_t *cr, int width, int height) +{ + int i, j; + + /* Fill background white */ + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + /* Draw in black */ + cairo_set_source_rgb (cr, 0, 0, 0); + + cairo_translate (cr, PAD, PAD); + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + + for (i = 0; i < POINTS; i++) + for (j = 0; j < POINTS; j++) { + cairo_save (cr); + cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1); + cairo_clip (cr); + cairo_paint (cr); + cairo_restore (cr); + } + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +fill_equal (cairo_t *cr, int width, int height) +{ + int i, j; + + /* Fill background white */ + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + /* Draw in black */ + cairo_set_source_rgb (cr, 0, 0, 0); + + cairo_translate (cr, PAD, PAD); + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + + for (i = 0; i < POINTS; i++) + for (j = 0; j < POINTS; j++) { + cairo_save (cr); + cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1); + cairo_clip_preserve (cr); + cairo_fill (cr); + cairo_restore (cr); + } + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +fill (cairo_t *cr, int width, int height) +{ + int i, j; + + /* Fill background white */ + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + /* Draw in black */ + cairo_set_source_rgb (cr, 0, 0, 0); + + cairo_translate (cr, PAD, PAD); + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + + for (i = 0; i < POINTS; i++) + for (j = 0; j < POINTS; j++) { + cairo_save (cr); + cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1); + cairo_clip (cr); + cairo_rectangle (cr, 2 * i, 2 * j, 2, 2); + cairo_fill (cr); + cairo_restore (cr); + } + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +stroke (cairo_t *cr, int width, int height) +{ + int i, j; + + /* Fill background white */ + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + /* Draw in black */ + cairo_set_source_rgb (cr, 0, 0, 0); + + cairo_translate (cr, PAD, PAD); + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + + cairo_set_line_width (cr, 2); + cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT); + + for (i = 0; i < POINTS; i++) + for (j = 0; j < POINTS; j++) { + cairo_save (cr); + cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1); + cairo_clip (cr); + cairo_move_to (cr, 2 * i, 2 * j + 1); + cairo_line_to (cr, 2 * i + 2, 2 * j + 1); + cairo_stroke (cr); + cairo_restore (cr); + } + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (a1_clip_paint, + "Test sample position when drawing trapezoids with ANTIALIAS_NONE", + "alpha, clip", /* keywords */ + "target=raster", /* requirements */ + WIDTH, HEIGHT, + NULL, paint) + +CAIRO_TEST (a1_clip_fill, + "Test sample position when drawing trapezoids with ANTIALIAS_NONE", + "alpha, clip", /* keywords */ + "target=raster", /* requirements */ + WIDTH, HEIGHT, + NULL, fill) + +CAIRO_TEST (a1_clip_fill_equal, + "Test sample position when drawing trapezoids with ANTIALIAS_NONE", + "alpha, clip", /* keywords */ + "target=raster", /* requirements */ + WIDTH, HEIGHT, + NULL, fill_equal) + +CAIRO_TEST (a1_clip_stroke, + "Test sample position when drawing trapezoids with ANTIALIAS_NONE", + "alpha, clip", /* keywords */ + "target=raster", /* requirements */ + WIDTH, HEIGHT, + NULL, stroke) |