1 files changed, 92 insertions, 0 deletions
diff --git a/test/pixman-rotate.c b/test/pixman-rotate.c
new file mode 100644
index 000000000..e0d0fc885
--- /dev/null
+++ b/test/pixman-rotate.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright © 2007 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: Kristian Høgsberg <krh@redhat.com>
+ */
+
+#include "cairo-test.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <cairo.h>
+
+#define WIDTH	32
+#define HEIGHT	WIDTH
+
+#define IMAGE_WIDTH	(3 * WIDTH)
+#define IMAGE_HEIGHT	IMAGE_WIDTH
+
+/* Draw the word cairo at NUM_TEXT different angles */
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *stamp;
+    cairo_t *cr2;
+
+    /* Draw a translucent rectangle for reference where the rotated
+     * image should be. */
+    cairo_new_path (cr);
+    cairo_rectangle (cr, WIDTH, HEIGHT, WIDTH, HEIGHT);
+    cairo_set_source_rgba (cr, 1, 1, 0, 0.3);
+    cairo_fill (cr);
+
+#if 1 /* Set to 0 to generate reference image */
+    cairo_translate (cr, 2 * WIDTH, 2 * HEIGHT);
+    cairo_rotate (cr, M_PI);
+#else
+    cairo_translate (cr, WIDTH, HEIGHT);
+#endif
+
+    stamp = cairo_surface_create_similar (cairo_get_group_target (cr),
+					  CAIRO_CONTENT_COLOR_ALPHA,
+					  WIDTH, HEIGHT);
+    cr2 = cairo_create (stamp);
+    cairo_surface_destroy (stamp);
+    {
+	cairo_new_path (cr2);
+	cairo_rectangle (cr2, WIDTH / 4, HEIGHT / 4, WIDTH / 2, HEIGHT / 2);
+	cairo_set_source_rgba (cr2, 1, 0, 0, 0.8);
+	cairo_fill (cr2);
+
+	cairo_rectangle (cr2, 0, 0, WIDTH, HEIGHT);
+	cairo_set_line_width (cr2, 2);
+	cairo_set_source_rgb (cr2, 0, 0, 0);
+	cairo_stroke (cr2);
+    }
+    cairo_set_source_surface (cr, cairo_get_target (cr2), 0, 0);
+    cairo_destroy (cr2);
+
+    cairo_paint (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (pixman_rotate,
+	    "Exposes pixman off-by-one error when rotating",
+	    "image, transform", /* keywords */
+	    NULL, /* requirements */
+	    IMAGE_WIDTH, IMAGE_HEIGHT,
+	    NULL, draw)