1 files changed, 84 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/self-copy.c b/libs/cairo-1.16.0/test/self-copy.c
new file mode 100644
index 0000000..bef02e9
--- /dev/null
+++ b/libs/cairo-1.16.0/test/self-copy.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * 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
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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: Owen Taylor <otaylor@redhat.com>
+ */
+
+#include "cairo-test.h"
+#include <math.h>
+#include <stdio.h>
+
+#define SIZE 40
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_pattern_t *pattern;
+    cairo_matrix_t matrix;
+
+    /* Paint a diagonal division as a test image */
+    cairo_set_source_rgb (cr, 1, 1, 1);	/* White */
+    cairo_paint (cr);
+
+    cairo_move_to (cr, SIZE,    0);
+    cairo_line_to (cr, SIZE, SIZE);
+    cairo_line_to (cr, 0,    SIZE);
+
+    cairo_set_source_rgb (cr, 0, 0, 0);
+    cairo_fill (cr);
+
+    /* Create a pattern with the target surface as the source,
+     * offset by SIZE/2
+     */
+    pattern = cairo_pattern_create_for_surface (cairo_get_group_target (cr));
+
+    cairo_matrix_init_translate (&matrix, - SIZE / 2, - SIZE / 2);
+    cairo_pattern_set_matrix (pattern, &matrix);
+
+    cairo_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    /* Copy two rectangles from the upper-left quarter of the image to
+     * the lower right.  It will work if we use cairo_fill(), but the
+     * cairo_clip() cairo_paint() combination fails because the clip
+     * on the surface as a destination affects it as the source as
+     * well.
+     */
+    cairo_rectangle (cr,
+		     2 * SIZE / 4, 2 * SIZE / 4,
+		     SIZE / 4,     SIZE / 4);
+    cairo_rectangle (cr,
+		     3 * SIZE / 4, 3 * SIZE / 4,
+		     SIZE / 4,     SIZE / 4);
+    cairo_clip (cr);
+    cairo_paint (cr);
+
+    return CAIRO_TEST_SUCCESS;
+
+}
+
+CAIRO_TEST (self_copy,
+	    "Test copying from a surface to itself with a clip",
+	    "paint", /* keywords */
+	    NULL, /* requirements */
+	    SIZE, SIZE,
+	    NULL, draw)