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Diffstat (limited to 'libs/cairo-1.16.0/test/finer-grained-fallbacks.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/finer-grained-fallbacks.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/finer-grained-fallbacks.c b/libs/cairo-1.16.0/test/finer-grained-fallbacks.c new file mode 100644 index 0000000..fa16f72 --- /dev/null +++ b/libs/cairo-1.16.0/test/finer-grained-fallbacks.c @@ -0,0 +1,180 @@ +/* + * Copyright © 2008 Adrian Johnson + * + * 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: Adrian Johnson <ajohnson@redneon.com> + */ + +#include "cairo-test.h" + +#define CIRCLE_SIZE 10 +#define PAD 2 +#define WIDTH (CIRCLE_SIZE*6.5 + PAD) +#define HEIGHT (CIRCLE_SIZE*7.0 + PAD) + +static void +draw_circle (cairo_t *cr, double x, double y) +{ + cairo_save (cr); + cairo_translate (cr, x, y); + cairo_arc (cr, 0, 0, CIRCLE_SIZE / 2, 0., 2. * M_PI); + cairo_fill (cr); + cairo_restore (cr); +} + +static void +draw_image_circle (cairo_t *cr, cairo_surface_t *source, double x, double y) +{ + cairo_save (cr); + + cairo_set_source_surface (cr, source, x, y); + cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REFLECT); + cairo_rectangle (cr, x, y, CIRCLE_SIZE, CIRCLE_SIZE); + cairo_fill (cr); + + cairo_restore (cr); +} + +static void +draw_circles (cairo_t *cr) +{ + draw_circle (cr, 0, -CIRCLE_SIZE*0.1); + draw_circle (cr, CIRCLE_SIZE*0.4, CIRCLE_SIZE*0.25); + + draw_circle (cr, CIRCLE_SIZE*2, 0); + draw_circle (cr, CIRCLE_SIZE*4, 0); + draw_circle (cr, CIRCLE_SIZE*6, 0); +} + +static void +draw_image_circles (cairo_t *cr, cairo_surface_t *source) +{ + draw_image_circle (cr, source, 0, -CIRCLE_SIZE*0.1); + draw_image_circle (cr, source, CIRCLE_SIZE*0.4, CIRCLE_SIZE*0.25); + + draw_image_circle (cr, source, CIRCLE_SIZE*2, 0); + draw_image_circle (cr, source, CIRCLE_SIZE*4, 0); + draw_image_circle (cr, source, CIRCLE_SIZE*6, 0); +} + +/* For each of circle and fallback_circle we draw: + * - two overlapping + * - one isolated + * - one off the page + * - one overlapping the edge of the page. + * + * We also draw a circle and fallback_circle overlapping each other. + * + * Circles are drawn in green. An opaque color and CAIRO_OPERATOR_OVER + * is used to ensure they will be emitted as a vectors in PS/PDF. + * + * Fallback circles are drawn in red. CAIRO_OPERATOR_ADD is used to + * ensure they will be emitted as a fallback image in PS/PDF. + * + * In order to trigger a fallback for SVG, we need to use a surface with + * REFLECT. + */ +static cairo_surface_t * +surface_create (cairo_t *target) +{ + cairo_surface_t *surface; + cairo_t *cr; + + surface = cairo_surface_create_similar (cairo_get_target (target), + CAIRO_CONTENT_COLOR_ALPHA, + CIRCLE_SIZE, CIRCLE_SIZE); + cr = cairo_create (surface); + cairo_surface_destroy (surface); + + cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); + draw_circle (cr, CIRCLE_SIZE/2, CIRCLE_SIZE/2); + + surface = cairo_surface_reference (cairo_get_target (cr)); + cairo_destroy (cr); + + return surface; +} + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + + cairo_translate (cr, PAD, PAD); + + cairo_save (cr); + + /* Draw overlapping circle and fallback circle */ + cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + draw_circle (cr, CIRCLE_SIZE*0.5, CIRCLE_SIZE*1.5); + + cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); + cairo_set_operator (cr, CAIRO_OPERATOR_ADD); + draw_circle (cr, CIRCLE_SIZE*0.75, CIRCLE_SIZE*1.75); + + /* Draw circles */ + cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_translate (cr, CIRCLE_SIZE*2.5, CIRCLE_SIZE*0.6); + draw_circles (cr); + + /* Draw fallback circles */ + cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); + cairo_set_operator (cr, CAIRO_OPERATOR_ADD); + cairo_translate (cr, 0, CIRCLE_SIZE*2); + draw_circles (cr); + + cairo_restore (cr); + cairo_translate (cr, 0, CIRCLE_SIZE * 3.5); + + /* Draw using fallback surface */ + surface = surface_create (cr); + + cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + draw_circle (cr, CIRCLE_SIZE*0.5, CIRCLE_SIZE*1.5); + + cairo_set_operator (cr, CAIRO_OPERATOR_ADD); + draw_image_circle (cr, surface, CIRCLE_SIZE/4, CIRCLE_SIZE + CIRCLE_SIZE/4); + + /* Draw circles */ + cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_translate (cr, CIRCLE_SIZE*2.5, CIRCLE_SIZE*0.6); + draw_circles (cr); + + cairo_set_operator (cr, CAIRO_OPERATOR_ADD); + cairo_translate (cr, -CIRCLE_SIZE/2, CIRCLE_SIZE*1.5); + draw_image_circles (cr, surface); + + cairo_surface_destroy (surface); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (finer_grained_fallbacks, + "Test that multiple PS/PDF fallback images in various locations are correct", + "fallbacks", /* keywords */ + NULL, /* requirements */ + WIDTH, HEIGHT, + NULL, draw) |