Rotated Images

ui/gfx/skbitmap_operations.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/skbitmap_operations.h"
 
 #include <algorithm>
 #include <string.h>
 
 #include "base/logging.h"
@@ skipping 819 matching lines @@
          SkBitmap::kARGB_8888_Config, source.width(), source.height());
      break;
    case ROTATION_270_CW:
      angle = SkFloatToScalar(-270.0f);
      result.setConfig(
          SkBitmap::kARGB_8888_Config, source.height(), source.width());
      break;
   }
   result.allocPixels();
   SkCanvas canvas(result);
+  canvas.clear(SkColorSetARGB(0, 0, 0, 0));
 
   canvas.translate(SkFloatToScalar(result.width() * 0.5f),
                    SkFloatToScalar(result.height() * 0.5f));
   canvas.rotate(angle);
   canvas.translate(-SkFloatToScalar(source.width() * 0.5f),
                    -SkFloatToScalar(source.height() * 0.5f));
   canvas.drawBitmap(source, 0, 0);
   canvas.flush();
 
   return result;
 }