/* * 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 * Owen Taylor */ #include #include "cairo-test.h" #include #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_translucent_pattern (cairo_t *cr, int x, int y) { cairo_set_source_rgba (cr, 1, 0, 0, 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_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 set_surface_pattern (cairo_t *cr, int x, int y) { cairo_surface_t *source_surface; cairo_t *cr2; double width = (int)(0.6 * WIDTH); double height = (int)(0.6 * HEIGHT); x += 0.2 * WIDTH; y += 0.2 * HEIGHT; source_surface = cairo_surface_create_similar (cairo_get_target (cr), CAIRO_CONTENT_COLOR_ALPHA, width, height); cr2 = cairo_create (source_surface); cairo_set_source_rgb (cr2, 1, 0, 0); /* red */ cairo_paint (cr2); cairo_set_source_rgb (cr2, 1, 1, 1); /* white */ cairo_arc (cr2, 0.5 * width, 0.5 * height, 0.5 * height, 0, 2 * M_PI); cairo_fill (cr2); cairo_destroy (cr2); cairo_set_source_surface (cr, source_surface, x, y); cairo_surface_destroy (source_surface); } 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_target (cr), CAIRO_CONTENT_ALPHA, width, height); cr2 = cairo_create (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_destroy (cr2); cairo_mask_surface (cr, mask_surface, x, y); cairo_surface_destroy (mask_surface); } 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 (*pattern_funcs[])(cairo_t *cr, int x, int y) = { set_solid_pattern, set_translucent_pattern, set_gradient_pattern, set_surface_pattern, }; static void (*draw_funcs[])(cairo_t *cr, int x, int y) = { draw_mask, draw_glyphs, draw_polygon, draw_rects }; #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) + PAD) static cairo_test_draw_function_t draw; cairo_test_t test = { "operator-source", "Test of CAIRO_OPERATOR_SOURCE", IMAGE_WIDTH, IMAGE_HEIGHT, draw }; static cairo_test_status_t draw (cairo_t *cr, int width, int height) { size_t i, j, x, y; cairo_pattern_t *pattern; cairo_select_font_face (cr, "Bitstream Vera Sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL); 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_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_SOURCE); pattern_funcs[i] (cr, x, y); draw_funcs[j] (cr, x, y); if (cairo_status (cr)) cairo_test_log ("%d %d HERE!\n", (int)i, (int)j); cairo_restore (cr); } } if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) cairo_test_log ("%d %d .HERE!\n", (int)i, (int)j); return CAIRO_TEST_SUCCESS; } int main (void) { return cairo_test (&test); }