diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/translate-show-surface.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/translate-show-surface.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/translate-show-surface.c b/libs/cairo-1.16.0/test/translate-show-surface.c new file mode 100644 index 0000000..9f7af8d --- /dev/null +++ b/libs/cairo-1.16.0/test/translate-show-surface.c @@ -0,0 +1,79 @@ +/* + * 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. + * + * Author: Carl D. Worth <cworth@cworth.org> + */ + +/* Bug history + * + * 2005-04-11 Carl Worth <cworth@cworth.org> + * + * It appears that calling cairo_show_surface after cairo_translate + * somehow applies the translation twice to the surface being + * shown. This is pretty easy to demonstrate by bringing up xsvg on + * an SVG file with an <image> and panning around a bit with the + * arrow keys. + * + * This is almost certainly a regression, and I suspect there may be + * some interaction with the fix for move-to-show-surface. + * + * 2005-04-12 Carl Worth <cworth@cworth.org> + * + * I committed a fix for this bug today. + */ + +#include "cairo-test.h" + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + uint32_t colors[4] = { + 0xffffffff, 0xffff0000, + 0xff00ff00, 0xff0000ff + }; + int i; + + for (i=0; i < 4; i++) { + surface = cairo_image_surface_create_for_data ((unsigned char *) &colors[i], + CAIRO_FORMAT_RGB24, + 1, 1, 4); + cairo_save (cr); + { + cairo_translate (cr, i % 2, i / 2); + cairo_set_source_surface (cr, surface, 0, 0); + cairo_paint (cr); + } + cairo_restore (cr); + cairo_surface_finish (surface); /* colors will go out of scope */ + cairo_surface_destroy (surface); + } + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (translate_show_surface, + "Tests calls to cairo_show_surface after cairo_translate", + "transform", /* keywords */ + NULL, /* requirements */ + 2, 2, + NULL, draw) |