add cairo

1 files changed, 77 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/png-flatten.c b/libs/cairo-1.16.0/test/png-flatten.c
new file mode 100644
index 0000000..2ce804e
--- /dev/null
+++ b/libs/cairo-1.16.0/test/png-flatten.c
@@ -0,0 +1,77 @@
+/*
+ * 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: Carl Worth <cworth@cworth.org>
+ */
+
+#include <stdio.h>
+
+#include <cairo.h>
+
+int
+main (int argc, char *argv[])
+{
+    cairo_t *cr;
+    cairo_surface_t *argb, *rgb24;
+    cairo_status_t status;
+    const char *input, *output;
+
+    if (argc != 3) {
+	fprintf (stderr, "usage: %s input.png output.png", argv[0]);
+	fprintf (stderr, "Loads a PNG image (potentially with alpha) and writes out a flattened (no alpha)\nPNG image by first blending over white.\n");
+	return 1;
+    }
+
+    input = argv[1];
+    output = argv[2];
+
+    argb = cairo_image_surface_create_from_png (input);
+    status = cairo_surface_status (argb);
+    if (status) {
+	fprintf (stderr, "%s: Error: Failed to load %s: %s\n",
+		 argv[0], input, cairo_status_to_string (status));
+	return 1;
+    }
+
+    rgb24 = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+					cairo_image_surface_get_width (argb),
+					cairo_image_surface_get_height (argb));
+
+    cr = cairo_create (rgb24);
+
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+    cairo_paint (cr);
+
+    cairo_set_source_surface (cr, argb, 0, 0);
+    cairo_paint (cr);
+
+    cairo_destroy (cr);
+
+    status = cairo_surface_write_to_png (rgb24, output);
+    if (status) {
+	fprintf (stderr, "%s: Error: Failed to write %s: %s\n",
+		 argv[0], output, cairo_status_to_string (status));
+	return 1;
+    }
+
+    return 0;
+}