diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/surface-source.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/surface-source.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/surface-source.c b/libs/cairo-1.16.0/test/surface-source.c new file mode 100644 index 0000000..657a0c8 --- /dev/null +++ b/libs/cairo-1.16.0/test/surface-source.c @@ -0,0 +1,170 @@ +/* + * Copyright © 2008 Chris Wilson + * + * 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 + * Chris Wilson not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Chris Wilson makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk> + */ + +#include "cairo-test.h" + +static cairo_surface_t *create_source_surface (int size); + +/* We use a relatively large source to exercise bug: + * Bug 7360 painting huge surfaces fails + * [https://bugs.freedesktop.org/show_bug.cgi?id=7360] + * but still keep the resultant image small for reasonably quick checking. + */ +#define SOURCE_SIZE 2000 +#define INTER_SIZE 512 +#define SIZE 96 + +static void +draw_pattern (cairo_surface_t **surface_inout, int surface_size) +{ + cairo_t *cr; + int mid = surface_size/2; + + cr = cairo_create (*surface_inout); + cairo_surface_destroy (*surface_inout); + + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_set_source_rgba (cr, 0, 0, 0, 0); + cairo_paint (cr); + + cairo_rectangle (cr, 0, 0, surface_size, surface_size); + cairo_rectangle (cr, mid - SIZE/4, mid + SIZE/4, SIZE/2, -SIZE/2); + cairo_clip (cr); + + /* outside squares -> opaque */ + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_rectangle (cr, + 0, 0, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_rectangle (cr, + surface_size / 2, 0, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + cairo_set_source_rgb (cr, 0, 1, 0); + cairo_rectangle (cr, + 0, surface_size / 2, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + cairo_set_source_rgb (cr, 0, 0, 1); + cairo_rectangle (cr, + surface_size / 2, surface_size / 2, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + + cairo_reset_clip (cr); + cairo_rectangle (cr, mid - SIZE/4, mid - SIZE/4, SIZE/2, SIZE/2); + cairo_clip (cr); + + /* inside squares -> translucent */ + cairo_set_source_rgba (cr, 0, 0, 1, .5); + cairo_rectangle (cr, + 0, 0, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + cairo_set_source_rgba (cr, 0, 1, 0, .5); + cairo_rectangle (cr, + surface_size / 2, 0, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + cairo_set_source_rgba (cr, 1, 0, 0, .5); + cairo_rectangle (cr, + 0, surface_size / 2, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + cairo_set_source_rgba (cr, 1, 1, 1, .5); + cairo_rectangle (cr, + surface_size / 2, surface_size / 2, + surface_size / 2, surface_size / 2); + cairo_fill (cr); + + + *surface_inout = cairo_surface_reference (cairo_get_target (cr)); + cairo_destroy (cr); +} + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + cairo_surface_t *similar; + cairo_status_t status; + cairo_t *cr2; + + cairo_set_source_rgb (cr, 0, 0, 0); + cairo_paint (cr); + + surface = create_source_surface (SOURCE_SIZE); + if (surface == NULL) /* can't create the source so skip the test */ + return CAIRO_TEST_UNTESTED; + + draw_pattern (&surface, SOURCE_SIZE); + + /* copy a subregion to a smaller intermediate surface */ + similar = cairo_surface_create_similar (surface, + CAIRO_CONTENT_COLOR_ALPHA, + INTER_SIZE, INTER_SIZE); + cr2 = cairo_create (similar); + cairo_surface_destroy (similar); + cairo_set_source_surface (cr2, surface, + (INTER_SIZE - SOURCE_SIZE)/2, + (INTER_SIZE - SOURCE_SIZE)/2); + cairo_paint (cr2); + + /* and then paint onto a small surface for checking */ + cairo_set_source_surface (cr, cairo_get_target (cr2), + (width - INTER_SIZE)/2, + (height - INTER_SIZE)/2); + cairo_destroy (cr2); + cairo_rectangle (cr, 16, 16, 64, 64); + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_fill (cr); + + /* destroy the surface last, as this triggers XCloseDisplay */ + cairo_surface_finish (surface); + status = cairo_surface_status (surface); + cairo_surface_destroy (surface); + + return cairo_test_status_from_status (cairo_test_get_context (cr), + status); +} + +static cairo_test_status_t +preamble (cairo_test_context_t *ctx) +{ + cairo_surface_t *surface; + cairo_status_t status; + + surface = create_source_surface (SOURCE_SIZE); + if (surface == NULL) /* can't create the source so skip the test */ + return CAIRO_TEST_UNTESTED; + + cairo_surface_finish (surface); + status = cairo_surface_status (surface); + cairo_surface_destroy (surface); + + return cairo_test_status_from_status (ctx, status); +} |