1 files changed, 82 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/fill-alpha.c b/libs/cairo-1.16.0/test/fill-alpha.c
new file mode 100644
index 0000000..6c2948d
--- /dev/null
+++ b/libs/cairo-1.16.0/test/fill-alpha.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+#define SIZE 60 /* needs to be big to check large area effects (dithering) */
+#define PAD 2
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    const double alpha = 1./3;
+    int n;
+
+    /* flatten to white */
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+
+    /* square */
+    cairo_rectangle (cr, PAD, PAD, SIZE, SIZE);
+    cairo_set_source_rgba (cr, 1, 0, 0, alpha);
+    cairo_fill (cr);
+
+    /* circle */
+    cairo_translate (cr, SIZE + 2 * PAD, 0);
+    cairo_arc (cr, PAD + SIZE / 2., PAD + SIZE / 2., SIZE / 2., 0, 2 * M_PI);
+    cairo_set_source_rgba (cr, 0, 1, 0, alpha);
+    cairo_fill (cr);
+
+    /* triangle */
+    cairo_translate (cr, 0, SIZE + 2 * PAD);
+    cairo_move_to (cr, PAD + SIZE / 2, PAD);
+    cairo_line_to (cr, PAD + SIZE, PAD + SIZE);
+    cairo_line_to (cr, PAD, PAD + SIZE);
+    cairo_set_source_rgba (cr, 0, 0, 1, alpha);
+    cairo_fill (cr);
+
+    /* star */
+    cairo_translate (cr, -(SIZE + 2 * PAD) + SIZE/2., SIZE/2.);
+    for (n = 0; n < 5; n++) {
+	cairo_line_to (cr,
+		       SIZE/2 * cos (2*n * 2*M_PI / 10),
+		       SIZE/2 * sin (2*n * 2*M_PI / 10));
+
+	cairo_line_to (cr,
+		       SIZE/4 * cos ((2*n+1)*2*M_PI / 10),
+		       SIZE/4 * sin ((2*n+1)*2*M_PI / 10));
+    }
+    cairo_set_source_rgba (cr, 0, 0, 0, alpha);
+    cairo_fill (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (fill_alpha,
+	    "Tests using set_rgba();fill()",
+	    "fill, alpha", /* keywords */
+	    NULL, /* requirements */
+	    2*SIZE + 4*PAD, 2*SIZE + 4*PAD,
+	    NULL, draw)