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authorsanine <sanine.not@pm.me>2022-10-12 12:03:23 -0500
committersanine <sanine.not@pm.me>2022-10-12 12:03:23 -0500
commit530ffd0b7d3c39757b20f00716e486b5caf89aff (patch)
tree76b35fdf57317038acf6b828871f6ae25fce2ebe /libs/cairo-1.16.0/test/large-font.c
parent3dbe9332e47c143a237db12440f134caebd1cfbe (diff)
add cairo
Diffstat (limited to 'libs/cairo-1.16.0/test/large-font.c')
-rw-r--r--libs/cairo-1.16.0/test/large-font.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/large-font.c b/libs/cairo-1.16.0/test/large-font.c
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+/*
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ */
+
+/* Bug history:
+ *
+ * 2008-05-23: Caolan McNamara noticed a bug in OpenOffice.org where,
+ * when using a very large font, space would be left for a
+ * glyph but it would actually be rendered in the wrong
+ * place. He wrote a minimal test case and posted the bug
+ * here:
+ *
+ * corrupt glyph positions with large font
+ * https://bugzilla.redhat.com/show_bug.cgi?id=448104
+ *
+ * 2008-05-23: Carl Worth wrote this test for the cairo test suite to
+ * exercise the bug.
+ */
+
+#include "cairo-test.h"
+
+#define WIDTH 800
+#define HEIGHT 800
+#define TEXT_SIZE 10000
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ /* paint white so we don't need separate ref images for
+ * RGB24 and ARGB32 */
+ cairo_set_source_rgb (cr, 1., 1., 1.);
+ cairo_paint (cr);
+
+ cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
+ CAIRO_FONT_SLANT_NORMAL,
+ CAIRO_FONT_WEIGHT_NORMAL);
+ cairo_set_font_size (cr, TEXT_SIZE);
+
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_move_to (cr, -TEXT_SIZE / 2, TEXT_SIZE / 2);
+ cairo_show_text (cr, "xW");
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (large_font,
+ "Draws a very large font to exercise a glyph-positioning bug",
+ "stress, font", /* keywords */
+ NULL, /* requirements */
+ WIDTH, HEIGHT,
+ NULL, draw)