diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/operator-clear.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/operator-clear.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/operator-clear.c b/libs/cairo-1.16.0/test/operator-clear.c new file mode 100644 index 0000000..72a32c2 --- /dev/null +++ b/libs/cairo-1.16.0/test/operator-clear.c @@ -0,0 +1,196 @@ +/* + * 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. + * + * Authors: Kristian Høgsberg <krh@redhat.com> + * Owen Taylor <otaylor@redhat.com> + */ + +#include "cairo-test.h" +#include <math.h> +#include <stdio.h> + +#define WIDTH 16 +#define HEIGHT 16 +#define PAD 2 + +static void +set_solid_pattern (cairo_t *cr, int x, int y) +{ + cairo_set_source_rgb (cr, 1.0, 0, 0.0); +} + +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_rgba (pattern, 0.2, 1, 0, 0, 1); + cairo_pattern_add_color_stop_rgba (pattern, 0.8, 1, 0, 0, 0.0); + cairo_set_source (cr, pattern); + cairo_pattern_destroy (pattern); +} + +static void +draw_mask (cairo_t *cr, int x, int y) +{ + cairo_surface_t *mask_surface; + cairo_t *cr2; + + double width = (int)(0.9 * WIDTH); + double height = (int)(0.9 * HEIGHT); + x += 0.05 * WIDTH; + y += 0.05 * HEIGHT; + + mask_surface = cairo_surface_create_similar (cairo_get_group_target (cr), + CAIRO_CONTENT_ALPHA, + width, height); + cr2 = cairo_create (mask_surface); + cairo_surface_destroy (mask_surface); + + cairo_set_source_rgb (cr2, 1, 1, 1); /* white */ + + cairo_arc (cr2, 0.5 * width, 0.5 * height, 0.45 * height, 0, 2 * M_PI); + cairo_fill (cr2); + + cairo_mask_surface (cr, cairo_get_target (cr2), x, y); + cairo_destroy (cr2); +} + +static void +draw_glyphs (cairo_t *cr, int x, int y) +{ + cairo_text_extents_t extents; + + cairo_set_font_size (cr, 0.8 * HEIGHT); + + cairo_text_extents (cr, "FG", &extents); + cairo_move_to (cr, + x + floor ((WIDTH - extents.width) / 2 + 0.5) - extents.x_bearing, + y + floor ((HEIGHT - extents.height) / 2 + 0.5) - extents.y_bearing); + cairo_show_text (cr, "FG"); +} + +static void +draw_polygon (cairo_t *cr, int x, int y) +{ + double width = (int)(0.9 * WIDTH); + double height = (int)(0.9 * HEIGHT); + x += 0.05 * WIDTH; + y += 0.05 * HEIGHT; + + 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 +draw_rects (cairo_t *cr, int x, int y) +{ + double block_width = (int)(0.33 * WIDTH + 0.5); + double block_height = (int)(0.33 * HEIGHT + 0.5); + int i, j; + + for (i = 0; i < 3; i++) + for (j = 0; j < 3; j++) + if ((i + j) % 2 == 0) + cairo_rectangle (cr, + x + block_width * i, y + block_height * j, + block_width, block_height); + + cairo_fill (cr); +} + +static void (* const pattern_funcs[])(cairo_t *cr, int x, int y) = { + set_solid_pattern, + set_gradient_pattern, +}; + +static void (* const draw_funcs[])(cairo_t *cr, int x, int y) = { + draw_mask, + draw_glyphs, + draw_polygon, + draw_rects +}; + +#define IMAGE_WIDTH (ARRAY_LENGTH (pattern_funcs) * (WIDTH + PAD) + PAD) +#define IMAGE_HEIGHT (ARRAY_LENGTH (draw_funcs) * (HEIGHT + PAD) + PAD) + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + const cairo_test_context_t *ctx = cairo_test_get_context (cr); + size_t i, j, x, y; + cairo_pattern_t *pattern; + + cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_NORMAL); + + for (j = 0; j < ARRAY_LENGTH (draw_funcs); j++) { + for (i = 0; i < ARRAY_LENGTH (pattern_funcs); i++) { + x = i * (WIDTH + PAD) + PAD; + y = j * (HEIGHT + PAD) + PAD; + + cairo_save (cr); + + pattern = cairo_pattern_create_linear (x + WIDTH, y, + x, y + HEIGHT); + cairo_pattern_add_color_stop_rgba (pattern, 0.2, + 0.0, 0.0, 1.0, 1.0); /* Solid blue */ + cairo_pattern_add_color_stop_rgba (pattern, 0.8, + 0.0, 0.0, 1.0, 0.0); /* Transparent blue */ + cairo_set_source (cr, pattern); + cairo_pattern_destroy (pattern); + + cairo_rectangle (cr, x, y, WIDTH, HEIGHT); + cairo_fill_preserve (cr); + cairo_clip (cr); + + cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR); + pattern_funcs[i] (cr, x, y); + draw_funcs[j] (cr, x, y); + if (cairo_status (cr)) + cairo_test_log (ctx, "%d %d HERE!\n", (int)i, (int)j); + + cairo_restore (cr); + } + } + + if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) + cairo_test_log (ctx, "%d %d .HERE!\n", (int)i, (int)j); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (operator_clear, + "Test of CAIRO_OPERATOR_CLEAR", + "operator", /* keywords */ + NULL, /* requirements */ + IMAGE_WIDTH, IMAGE_HEIGHT, + NULL, draw) |