add cairo

1 files changed, 62 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/culled-glyphs.c b/libs/cairo-1.16.0/test/culled-glyphs.c
new file mode 100644
index 0000000..eaa462b
--- /dev/null
+++ b/libs/cairo-1.16.0/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 "
+"https://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)
+