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Diffstat (limited to 'test/culled-glyphs.c')
| -rw-r--r-- | test/culled-glyphs.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/test/culled-glyphs.c b/test/culled-glyphs.c new file mode 100644 index 000000000..28bee7e8c --- /dev/null +++ b/test/culled-glyphs.c @@ -0,0 +1,62 @@ +/* + * 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_test_status_t +draw (cairo_t *cr, int width, int height) +{ + const char *text = +"This needs to be a very long string, wider than the surface, and yet wider." +"Ideally it should overflow the stack buffers, but do you really want to read " +"a message that long. No. So we compromise with around 300 glyphs that is " +"long enough to trigger the conditions as stated in " +"http://lists.cairographics.org/archives/cairo/2008-December/015976.html. " +"Happy now?"; + cairo_text_extents_t extents; + + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + cairo_set_source_rgb (cr, 0, 0, 0); + + cairo_set_font_size (cr, 16); + cairo_text_extents (cr, text, &extents); + cairo_move_to (cr, -extents.width/2, 18); + cairo_show_text (cr, text); + + /* XXX we should exercise cairo_show_text_glyphs() as well, + * and CAIRO_TEXT_CLUSTER_BACKWARDS + */ + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (culled_glyphs, + "Tests culling of glyphs and text clusters", + "glyphs", /* keywords */ + NULL, /* requirements */ + 20, 20, + NULL, draw) + |