/* * 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)