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-rw-r--r--test/png-flatten.c77
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diff --git a/test/png-flatten.c b/test/png-flatten.c
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+/*
+ * 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;
+}