[test/extend-*] Add various cairo_pattern_set_extend() test cases.

Add various test cases to exercise
_cairo_pattern_acquire_surface_for_surface(), most notably using similar
source surfaces to provide coverage of the non-image surface branch.

1 files changed, 105 insertions, 0 deletions

diff --git a/test/extend-pad-similar.c b/test/extend-pad-similar.c
new file mode 100644
index 00000000..d523f543
--- /dev/null
+++ b/test/extend-pad-similar.c
@@ -0,0 +1,105 @@
+/*
+ * 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: Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#include "cairo-test.h"
+
+#define SIZE 90
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "extend-pad-similar",
+    "Test CAIRO_EXTEND_PAD for surface patterns",
+    SIZE, SIZE,
+    draw
+};
+
+static cairo_surface_t *
+create_source_surface (cairo_surface_t *target)
+{
+    const int surface_size = (SIZE - 30) / 10;
+    cairo_surface_t *surface;
+    cairo_t *cr;
+
+    /* Create an image surface with my favorite four colors in each
+     * quadrant. */
+    surface = cairo_surface_create_similar (target, CAIRO_CONTENT_COLOR,
+					    surface_size, surface_size);
+    cr = cairo_create (surface);
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_rectangle (cr,
+		     0, 0,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    cairo_rectangle (cr,
+		     surface_size / 2, 0,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_set_source_rgb (cr, 0, 1, 0);
+    cairo_rectangle (cr,
+		     0, surface_size / 2,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_set_source_rgb (cr, 0, 0, 1);
+    cairo_rectangle (cr,
+		     surface_size / 2, surface_size / 2,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_destroy (cr);
+
+    return surface;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *surface;
+
+    surface = create_source_surface (cairo_get_group_target (cr));
+
+    cairo_set_source_rgba (cr, 0, 0, 0, 1);
+    cairo_rectangle (cr, 0, 0, SIZE, SIZE);
+    cairo_fill (cr);
+
+    cairo_scale (cr, 10, 10);
+    cairo_set_source_surface (cr, surface, 1.5, 1.5);
+    cairo_surface_destroy (surface);
+
+    cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_PAD);
+    cairo_rectangle (cr, 1.5, 1.5, 6, 6);
+    cairo_clip (cr);
+
+    cairo_paint (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}