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-rw-r--r--test/clip-shape.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/test/clip-shape.c b/test/clip-shape.c
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--- /dev/null
+++ b/test/clip-shape.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2010 Intel Corporation
+ *
+ * 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: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Adapted from a bug report by <cairouser@yahoo.com> */
+
+#include "cairo-test.h"
+
+static const struct xy {
+ double x;
+ double y;
+} gp[] = {
+ { 100, 250 },
+ { 100, 100 },
+ { 150, 230 },
+ { 239, 100 },
+ { 239, 250 },
+};
+
+static const double vp[3] = { 100, 144, 238.5 };
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ int i;
+
+ cairo_paint (cr); /* opaque background */
+
+ for (i = 0; i < 5; ++i)
+ cairo_line_to (cr, gp[i].x, gp[i].y);
+ cairo_close_path (cr);
+
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_set_line_width (cr, 1.5);
+ cairo_stroke_preserve (cr);
+ cairo_clip (cr);
+
+ for (i = 1; i < 3; ++i) {
+ double x1 = vp[i - 1];
+ double x2 = vp[i];
+
+ cairo_move_to (cr, x1, 0);
+ cairo_line_to (cr, x1, height);
+ cairo_line_to (cr, x2, height);
+ cairo_line_to (cr, x2, 0);
+ cairo_close_path (cr);
+
+ if (i & 1)
+ cairo_set_source_rgb (cr, 0, 1, 0);
+ else
+ cairo_set_source_rgb (cr, 1, 1, 0);
+
+ cairo_fill (cr);
+ }
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (clip_shape,
+ "Test handling of clipping with a non-aligned shape",
+ "clip", /* keywords */
+ NULL, /* requirements */
+ 400, 300,
+ NULL, draw)