[poc] curve-filter

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
@@ skipping 40 matching lines @@
 #include "core/layout/LayoutBox.h"
 #include "core/layout/LayoutTheme.h"
 #include "modules/canvas2d/CanvasGradient.h"
 #include "modules/canvas2d/CanvasPattern.h"
 #include "modules/canvas2d/CanvasRenderingContext2DState.h"
 #include "modules/canvas2d/CanvasStyle.h"
 #include "modules/canvas2d/HitRegion.h"
 #include "modules/canvas2d/Path2D.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/geometry/FloatQuad.h"
+#include "platform/graphics/BitmapImage.h"
 #include "platform/graphics/DrawLooperBuilder.h"
 #include "platform/graphics/ExpensiveCanvasHeuristicParameters.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/graphics/StrokeData.h"
 #include "platform/graphics/skia/SkiaUtils.h"
 #include "platform/text/BidiTextRun.h"
 #include "public/platform/Platform.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
 #include "wtf/ArrayBufferContents.h"
@@ skipping 1249 matching lines @@
         layerPaint.setXfermode(paint->getXfermode());
         SkAutoTUnref<SkImageFilter> localFilter(paint->getImageFilter()->newWithLocalMatrix(invCtm));
         layerPaint.setImageFilter(localFilter);
         c->saveLayer(&bounds, &layerPaint);
         imagePaint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
         imagePaint.setImageFilter(nullptr);
     }
 
     if (!imageSource->isVideoElement()) {
         imagePaint.setAntiAlias(shouldDrawImageAntialiased(dstRect));
+        if (image->isBitmapImage()) // FIXME: remove.
+            toBitmapImage(image)->setDrawingToCanvasElement(true);
         image->draw(c, imagePaint, dstRect, srcRect, DoNotRespectImageOrientation, Image::DoNotClampImageToSourceRect);
+        if (image->isBitmapImage()) // FIXME: remove.
+            toBitmapImage(image)->setDrawingToCanvasElement(false);
     } else {
         c->save();
         c->clipRect(dstRect);
         c->translate(dstRect.x(), dstRect.y());
         c->scale(dstRect.width() / srcRect.width(), dstRect.height() / srcRect.height());
         c->translate(-srcRect.x(), -srcRect.y());
         HTMLVideoElement* video = static_cast<HTMLVideoElement*>(imageSource);
         video->paintCurrentFrame(c, IntRect(IntPoint(), IntSize(video->videoWidth(), video->videoHeight())), &imagePaint);
     }
 
@@ skipping 987 matching lines @@
         if (imageType == CanvasRenderingContext2DState::NonOpaqueImage)
             return;
         if (alpha < 0xFF)
             return;
     }
 
     canvas()->buffer()->willOverwriteCanvas();
 }
 
 } // namespace blink