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Diffstat (limited to 'test/coverage.c')
| -rw-r--r-- | test/coverage.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/test/coverage.c b/test/coverage.c new file mode 100644 index 000000000..00c86a1d5 --- /dev/null +++ b/test/coverage.c @@ -0,0 +1,182 @@ +/* + * Copyright © 2005 Red Hat, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of + * Red Hat, Inc. not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc. makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL, + * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR + * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Kristian Høgsberg <krh@redhat.com> + */ + +#include <math.h> +#include "cairo_test.h" + +#define WIDTH 64 +#define HEIGHT 64 +#define PAD 10 + +/* XXX The test image uses Bitstream Vera Sans as the font - how do we + * ensure that it's available? Can we ship it with this test? */ + +const char fontname[] = "Bitstream Vera Sans"; +const int fontsize = 40; +const char png_filename[] = "romedalen.png"; + +static void +set_solid_pattern (cairo_t *cr, int x, int y) +{ + cairo_set_rgb_color (cr, 0, 0, 0.6); + cairo_set_alpha (cr, 1.0); +} + +static void +set_translucent_pattern (cairo_t *cr, int x, int y) +{ + cairo_set_rgb_color (cr, 0, 0, 0.6); + cairo_set_alpha (cr, 0.5); +} + +static void +set_gradient_pattern (cairo_t *cr, int x, int y) +{ + cairo_pattern_t *pattern; + + pattern = + cairo_pattern_create_linear (x, y, x + WIDTH, y + HEIGHT); + cairo_pattern_add_color_stop (pattern, 0, 1, 1, 1, 1); + cairo_pattern_add_color_stop (pattern, 1, 0, 0, 0.4, 1); + cairo_set_pattern (cr, pattern); + cairo_set_alpha (cr, 1); +} + +static void +set_image_pattern (cairo_t *cr, int x, int y) +{ + cairo_pattern_t *pattern; + + pattern = cairo_test_create_png_pattern (cr, png_filename); + cairo_set_pattern (cr, pattern); + cairo_set_alpha (cr, 1); +} + +static void +set_translucent_image_pattern (cairo_t *cr, int x, int y) +{ + cairo_pattern_t *pattern; + + pattern = cairo_test_create_png_pattern (cr, png_filename); + cairo_set_pattern (cr, pattern); + cairo_set_alpha (cr, 0.5); +} + +static void +draw_text (cairo_t *cr, int x, int y) +{ + cairo_rel_move_to (cr, 0, fontsize); + cairo_show_text (cr, "Aa"); +} + +static void +draw_polygon (cairo_t *cr, int x, int y) +{ + cairo_new_path (cr); + cairo_move_to (cr, x, y); + cairo_line_to (cr, x, y + HEIGHT); + cairo_line_to (cr, x + WIDTH / 2, y + 3 * HEIGHT / 4); + cairo_line_to (cr, x + WIDTH, y + HEIGHT); + cairo_line_to (cr, x + WIDTH, y); + cairo_line_to (cr, x + WIDTH / 2, y + HEIGHT / 4); + cairo_close_path (cr); + cairo_fill (cr); +} + +static void (*pattern_funcs[])(cairo_t *cr, int x, int y) = { + set_solid_pattern, + set_translucent_pattern, + set_gradient_pattern, + set_image_pattern, + set_translucent_image_pattern +}; + +static void (*draw_funcs[])(cairo_t *cr, int x, int y) = { + draw_text, + draw_polygon, +}; + +#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) +#define IMAGE_WIDTH (ARRAY_SIZE (pattern_funcs) * (WIDTH + PAD) + PAD) +#define IMAGE_HEIGHT (ARRAY_SIZE (draw_funcs) * (HEIGHT + PAD) * 2 + PAD) + +static cairo_test_t test = { + "coverage", + "Various coverage test of cairo", + IMAGE_WIDTH, IMAGE_HEIGHT +}; + + +static void +draw (cairo_t *cr, int width, int height) +{ + /* TODO: pattern fill, gradient fill, clipping, gradient clipping, + path+solid alpha mask clipping */ + + int i, j, x, y; + + cairo_select_font (cr, fontname, + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_BOLD); + cairo_scale_font (cr, fontsize); + + for (j = 0; j < ARRAY_SIZE (draw_funcs); j++) { + for (i = 0; i < ARRAY_SIZE (pattern_funcs); i++) { + x = i * (WIDTH + PAD) + PAD; + y = j * (HEIGHT + PAD) + PAD; + cairo_move_to (cr, x, y); + pattern_funcs[i] (cr, x, y); + draw_funcs[j] (cr, x, y); + } + } + + for (j = 0; j < ARRAY_SIZE (draw_funcs); j++) { + for (i = 0; i < ARRAY_SIZE (pattern_funcs); i++) { + x = i * (WIDTH + PAD) + PAD; + y = (ARRAY_SIZE (draw_funcs) + j) * (HEIGHT + PAD) + PAD; + + cairo_save (cr); + + cairo_set_alpha (cr, 1.0); + cairo_new_path (cr); + cairo_arc (cr, x + WIDTH / 2, y + HEIGHT / 2, + WIDTH / 3, 0, 2 * M_PI); + cairo_clip (cr); + + cairo_move_to (cr, x, y); + pattern_funcs[i] (cr, x, y); + draw_funcs[j] (cr, x, y); + + cairo_restore (cr); + + } + } +} + +int +main (void) +{ + return cairo_test (&test, draw); +} |