1 files changed, 72 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/rectilinear-miter-limit.c b/libs/cairo-1.16.0/test/rectilinear-miter-limit.c
new file mode 100644
index 0000000..581d98b
--- /dev/null
+++ b/libs/cairo-1.16.0/test/rectilinear-miter-limit.c
@@ -0,0 +1,72 @@
+/*
+ * 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>
+ */
+
+#include "cairo-test.h"
+
+#define LINE_WIDTH  10
+#define PAD	    2
+#define WIDTH	    (PAD + LINE_WIDTH + PAD)
+#define HEIGHT	    (WIDTH)
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_translate (cr, PAD, PAD);
+
+    /* Paint background white, then draw in black. */
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+    cairo_paint (cr);
+    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+
+    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+    cairo_set_line_width (cr, LINE_WIDTH);
+
+    /* The default miter limit value of 10.0 guarantees that
+     * right-angle turns, (in fact, any angle greater than 11
+     * degrees), gets a miter rather than a bevel join. The
+     * rectilinear stroke optimization was originally written in a
+     * buggy way that did not respect the miter limit, (that is,
+     * inappropriately drawing miter joins when the miter limit would
+     * turn them into bevels). So we draw here with a miter limit of
+     * 1.0 to force all miter joins into bevels. */
+    cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
+    cairo_set_miter_limit (cr, 1.0);
+
+    cairo_move_to (cr, LINE_WIDTH / 2.0, LINE_WIDTH);
+    cairo_rel_line_to (cr, 0, - LINE_WIDTH / 2.0);
+    cairo_rel_line_to (cr, LINE_WIDTH / 2.0, 0);
+
+    cairo_stroke (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (rectilinear_miter_limit,
+	    "Test that the rectilinear stroke optimization doesn't break cairo_set_miter_limit",
+	    "miter, stroke, stress", /* keywords */
+	    NULL, /* requirements */
+	    WIDTH, HEIGHT,
+	    NULL, draw)