Transparency

third_party/WebKit/WebCore/platform/graphics/skia/ImageSkia.cpp

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  * 
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 207 matching lines @@
             destBitmapSubset.bottom() + destRect.fTop };
 
         canvas.drawBitmapRect(resampled, 0, offsetDestRect, &paint);
     }
 }
 
 static void paintSkBitmap(PlatformContextSkia* platformContext, const NativeImageSkia& bitmap, const SkIRect& srcRect, const SkRect& destRect, const SkPorterDuff::Mode& compOp)
 {
     SkPaint paint;
     paint.setPorterDuffXfermode(compOp);
+    paint.setFilterBitmap(true);
 
     skia::PlatformCanvas* canvas = platformContext->canvas();
 
     ResamplingMode resampling = platformContext->isPrinting() ? RESAMPLE_NONE :
         computeResamplingMode(bitmap, srcRect.width(), srcRect.height(),
                               SkScalarToFloat(destRect.width()),
                               SkScalarToFloat(destRect.height()));
     if (resampling == RESAMPLE_AWESOME) {
-        paint.setFilterBitmap(false);
         drawResampledBitmap(*canvas, paint, bitmap, srcRect, destRect);
     } else {
         // No resampling necessary, we can just draw the bitmap. We want to
         // filter it if we decided to do linear interpolation above, or if there
         // is something interesting going on with the matrix (like a rotation).
         // Note: for serialization, we will want to subset the bitmap first so
         // we don't send extra pixels.
-        paint.setFilterBitmap(resampling == RESAMPLE_LINEAR);
         canvas->drawBitmapRect(bitmap, &srcRect, destRect, &paint);
     }
 }
 
 // Transforms the given dimensions with the given matrix. Used to see how big
 // images will be once transformed.
 static void TransformDimensions(const SkMatrix& matrix, float srcWidth, float srcHeight, float* destWidth, float* destHeight) {
     // Transform 3 points to see how long each side of the bitmap will be.
     SkPoint src_points[3];  // (0, 0), (width, 0), (0, height).
     src_points[0].set(0, 0);
@@ skipping 198 matching lines @@
 
 PassRefPtr<BitmapImageSingleFrameSkia> BitmapImageSingleFrameSkia::create(const SkBitmap& bitmap)
 {
     RefPtr<BitmapImageSingleFrameSkia> image(adoptRef(new BitmapImageSingleFrameSkia()));
     if (!bitmap.copyTo(&image->m_nativeImage, bitmap.config()))
         return 0;
     return image.release();
 }
 
 }  // namespace WebCore