1 files changed, 111 insertions, 0 deletions
diff --git a/libdimension/tests/canvas/png.c b/libdimension/tests/canvas/png.c
new file mode 100644
index 0000000..7311e43
--- /dev/null
+++ b/libdimension/tests/canvas/png.c
@@ -0,0 +1,111 @@
+/*************************************************************************
+ * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com>     *
+ *                                                                       *
+ * This file is part of The Dimension Test Suite.                        *
+ *                                                                       *
+ * The Dimension Test Suite is free software; you can redistribute it    *
+ * and/or modify it under the terms of the GNU General Public License as *
+ * published by the Free Software Foundation; either version 3 of the    *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Test Suite is distributed in the hope that it will be   *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * General Public License for more details.                              *
+ *                                                                       *
+ * You should have received a copy of the GNU General Public License     *
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+#include "tests.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(void)
+{
+  int ret = EXIT_SUCCESS;
+
+  // Treat warnings as errors for tests
+  dmnsn_die_on_warnings(true);
+
+  // Allocate our canvas
+  dmnsn_pool *pool = dmnsn_new_pool();
+  dmnsn_canvas *canvas = dmnsn_new_canvas(pool, 768, 480);
+
+  // Optimize the canvas for PNG export
+  if (dmnsn_png_optimize_canvas(pool, canvas) != 0) {
+    fprintf(stderr, "--- Couldn't optimize canvas for PNG! ---\n");
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  // Paint the test pattern
+  dmnsn_paint_test_canvas(canvas);
+
+  // Write the image to PNG
+
+  printf("Writing scene to PNG\n");
+  FILE *ofile = fopen("png1.png", "wb");
+  if (!ofile) {
+    fprintf(stderr, "--- Couldn't open 'png1.png' for writing! ---\n");
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  if (dmnsn_png_write_canvas(canvas, ofile) != 0) {
+    fprintf(stderr, "--- Writing canvas to PNG failed! ---\n");
+    fclose(ofile);
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  fclose(ofile);
+
+  /*
+   * Now test PNG import/export
+   */
+
+  // Read the image back from PNG
+
+  printf("Reading scene from PNG\n");
+  FILE *ifile = fopen("png1.png", "rb");
+  if (!ifile) {
+    fprintf(stderr, "--- Couldn't open 'png1.png' for reading! ---\n");
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  canvas = dmnsn_png_read_canvas(pool, ifile);
+  if (!canvas) {
+    fprintf(stderr, "--- Reading canvas from PNG failed! ---\n");
+    fclose(ifile);
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  fclose(ifile);
+
+  // And write it back
+
+  printf("Writing scene to PNG\n");
+  ofile = fopen("png2.png", "wb");
+  if (!ofile) {
+    fprintf(stderr, "--- Couldn't open 'png2.png' for writing! ---\n");
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  if (dmnsn_png_write_canvas(canvas, ofile) != 0) {
+    fprintf(stderr, "--- Writing canvas to PNG failed! ---\n");
+    fclose(ofile);
+    ret = EXIT_FAILURE;
+    goto exit;
+  }
+
+  fclose(ofile);
+
+ exit:
+  dmnsn_delete_pool(pool);
+  return ret;
+}