subsurface-modify-child.c [plain text]
#include "cairo-test.h"
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *region, *similar;
cairo_t *cr_region, *cr_similar;
cairo_set_source_rgb (cr, .5, .5, .5);
cairo_paint (cr);
similar = cairo_surface_create_similar (cairo_get_target (cr),
CAIRO_CONTENT_COLOR_ALPHA,
20, 20);
cr_similar = cairo_create (similar);
cairo_surface_destroy (similar);
cairo_set_source_surface (cr_similar, cairo_get_target (cr), -20, -20);
cairo_paint (cr_similar);
similar = cairo_surface_reference (cairo_get_target (cr_similar));
cairo_destroy (cr_similar);
region = cairo_surface_create_for_rectangle (cairo_get_target (cr),
20, 20, 20, 20);
cr_region = cairo_create (region);
cairo_surface_destroy (region);
cairo_set_source_rgb (cr_region, 1, 1, 1);
cairo_rectangle (cr_region, 0, 0, 10, 10);
cairo_fill (cr_region);
cairo_set_source_rgb (cr_region, 1, 0, 0);
cairo_rectangle (cr_region, 10, 0, 10, 10);
cairo_fill (cr_region);
cairo_set_source_rgb (cr_region, 0, 1, 0);
cairo_rectangle (cr_region, 0, 10, 10, 10);
cairo_fill (cr_region);
cairo_set_source_rgb (cr_region, 0, 0, 1);
cairo_rectangle (cr_region, 10, 10, 10, 10);
cairo_fill (cr_region);
cairo_destroy (cr_region);
cr_similar = cairo_create (similar);
cairo_surface_destroy (similar);
cairo_set_source_surface (cr_similar, cairo_get_target (cr), -20, -20);
cairo_paint (cr_similar);
similar = cairo_surface_reference (cairo_get_target (cr_similar));
cairo_destroy (cr_similar);
cairo_set_source_surface (cr, similar, 20, 20);
cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
cairo_rectangle (cr, 0, 0, width, height);
cairo_rectangle (cr, 20, 40, 20, -20);
cairo_fill (cr);
cairo_surface_destroy (similar);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (subsurface_modify_child,
"Tests source clipping with later modifications",
"subsurface",
NULL,
60, 60,
NULL, draw)