Move all filters-related files from core/platform to platform.

Source/core/platform/graphics/filters/FEDisplacementMap.cpp

Index: Source/core/platform/graphics/filters/FEDisplacementMap.cpp
diff --git a/Source/core/platform/graphics/filters/FEDisplacementMap.cpp b/Source/core/platform/graphics/filters/FEDisplacementMap.cpp
deleted file mode 100644
index 3d99a7247779a680b719a95c6a0d0abb408f9d7e..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/filters/FEDisplacementMap.cpp
+++ /dev/null
@@ -1,262 +0,0 @@
-/*
- * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
- * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
- * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
- * Copyright (C) Research In Motion Limited 2010. All rights reserved.
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-
-#include "core/platform/graphics/filters/FEDisplacementMap.h"
-
-#include "platform/graphics/GraphicsContext.h"
-#include "platform/graphics/filters/SkiaImageFilterBuilder.h"
-#include "platform/graphics/skia/NativeImageSkia.h"
-#include "platform/text/TextStream.h"
-#include "wtf/Uint8ClampedArray.h"
-
-#include "SkBitmapSource.h"
-#include "SkDisplacementMapEffect.h"
-
-namespace WebCore {
-
-FEDisplacementMap::FEDisplacementMap(Filter* filter, ChannelSelectorType xChannelSelector, ChannelSelectorType yChannelSelector, float scale)
-    : FilterEffect(filter)
-    , m_xChannelSelector(xChannelSelector)
-    , m_yChannelSelector(yChannelSelector)
-    , m_scale(scale)
-{
-}
-
-PassRefPtr<FEDisplacementMap> FEDisplacementMap::create(Filter* filter, ChannelSelectorType xChannelSelector,
-    ChannelSelectorType yChannelSelector, float scale)
-{
-    return adoptRef(new FEDisplacementMap(filter, xChannelSelector, yChannelSelector, scale));
-}
-
-ChannelSelectorType FEDisplacementMap::xChannelSelector() const
-{
-    return m_xChannelSelector;
-}
-
-bool FEDisplacementMap::setXChannelSelector(const ChannelSelectorType xChannelSelector)
-{
-    if (m_xChannelSelector == xChannelSelector)
-        return false;
-    m_xChannelSelector = xChannelSelector;
-    return true;
-}
-
-ChannelSelectorType FEDisplacementMap::yChannelSelector() const
-{
-    return m_yChannelSelector;
-}
-
-bool FEDisplacementMap::setYChannelSelector(const ChannelSelectorType yChannelSelector)
-{
-    if (m_yChannelSelector == yChannelSelector)
-        return false;
-    m_yChannelSelector = yChannelSelector;
-    return true;
-}
-
-float FEDisplacementMap::scale() const
-{
-    return m_scale;
-}
-
-bool FEDisplacementMap::setScale(float scale)
-{
-    if (m_scale == scale)
-        return false;
-    m_scale = scale;
-    return true;
-}
-
-void FEDisplacementMap::setResultColorSpace(ColorSpace)
-{
-    // Spec: The 'color-interpolation-filters' property only applies to the 'in2' source image
-    // and does not apply to the 'in' source image. The 'in' source image must remain in its
-    // current color space.
-    // The result is in that smae color space because it is a displacement of the 'in' image.
-    FilterEffect::setResultColorSpace(inputEffect(0)->resultColorSpace());
-}
-
-void FEDisplacementMap::transformResultColorSpace(FilterEffect* in, const int index)
-{
-    // Do not transform the first primitive input, as per the spec.
-    if (index)
-        in->transformResultColorSpace(operatingColorSpace());
-}
-
-void FEDisplacementMap::applySoftware()
-{
-    FilterEffect* in = inputEffect(0);
-    FilterEffect* in2 = inputEffect(1);
-
-    ASSERT(m_xChannelSelector != CHANNEL_UNKNOWN);
-    ASSERT(m_yChannelSelector != CHANNEL_UNKNOWN);
-
-    Uint8ClampedArray* dstPixelArray = createPremultipliedImageResult();
-    if (!dstPixelArray)
-        return;
-
-    IntRect effectADrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
-    RefPtr<Uint8ClampedArray> srcPixelArrayA = in->asPremultipliedImage(effectADrawingRect);
-
-    IntRect effectBDrawingRect = requestedRegionOfInputImageData(in2->absolutePaintRect());
-    RefPtr<Uint8ClampedArray> srcPixelArrayB = in2->asUnmultipliedImage(effectBDrawingRect);
-
-    ASSERT(srcPixelArrayA->length() == srcPixelArrayB->length());
-
-    Filter* filter = this->filter();
-    IntSize paintSize = absolutePaintRect().size();
-    float scaleX = filter->applyHorizontalScale(m_scale);
-    float scaleY = filter->applyVerticalScale(m_scale);
-    float scaleForColorX = scaleX / 255.0;
-    float scaleForColorY = scaleY / 255.0;
-    float scaledOffsetX = 0.5 - scaleX * 0.5;
-    float scaledOffsetY = 0.5 - scaleY * 0.5;
-    int stride = paintSize.width() * 4;
-    for (int y = 0; y < paintSize.height(); ++y) {
-        int line = y * stride;
-        for (int x = 0; x < paintSize.width(); ++x) {
-            int dstIndex = line + x * 4;
-            int srcX = x + static_cast<int>(scaleForColorX * srcPixelArrayB->item(dstIndex + m_xChannelSelector - 1) + scaledOffsetX);
-            int srcY = y + static_cast<int>(scaleForColorY * srcPixelArrayB->item(dstIndex + m_yChannelSelector - 1) + scaledOffsetY);
-            for (unsigned channel = 0; channel < 4; ++channel) {
-                if (srcX < 0 || srcX >= paintSize.width() || srcY < 0 || srcY >= paintSize.height())
-                    dstPixelArray->set(dstIndex + channel, static_cast<unsigned char>(0));
-                else {
-                    unsigned char pixelValue = srcPixelArrayA->item(srcY * stride + srcX * 4 + channel);
-                    dstPixelArray->set(dstIndex + channel, pixelValue);
-                }
-            }
-        }
-    }
-}
-
-static SkDisplacementMapEffect::ChannelSelectorType toSkiaMode(ChannelSelectorType type)
-{
-    switch (type) {
-    case CHANNEL_R:
-        return SkDisplacementMapEffect::kR_ChannelSelectorType;
-    case CHANNEL_G:
-        return SkDisplacementMapEffect::kG_ChannelSelectorType;
-    case CHANNEL_B:
-        return SkDisplacementMapEffect::kB_ChannelSelectorType;
-    case CHANNEL_A:
-        return SkDisplacementMapEffect::kA_ChannelSelectorType;
-    case CHANNEL_UNKNOWN:
-    default:
-        return SkDisplacementMapEffect::kUnknown_ChannelSelectorType;
-    }
-}
-
-bool FEDisplacementMap::applySkia()
-{
-    // For now, only use the skia implementation for accelerated rendering.
-    if (filter()->renderingMode() != Accelerated)
-        return false;
-
-    FilterEffect* in = inputEffect(0);
-    FilterEffect* in2 = inputEffect(1);
-
-    if (!in || !in2)
-        return false;
-
-    ImageBuffer* resultImage = createImageBufferResult();
-    if (!resultImage)
-        return false;
-
-    RefPtr<Image> color = in->asImageBuffer()->copyImage(DontCopyBackingStore);
-    RefPtr<Image> displ = in2->asImageBuffer()->copyImage(DontCopyBackingStore);
-
-    RefPtr<NativeImageSkia> colorNativeImage = color->nativeImageForCurrentFrame();
-    RefPtr<NativeImageSkia> displNativeImage = displ->nativeImageForCurrentFrame();
-
-    if (!colorNativeImage || !displNativeImage)
-        return false;
-
-    SkBitmap colorBitmap = colorNativeImage->bitmap();
-    SkBitmap displBitmap = displNativeImage->bitmap();
-
-    SkAutoTUnref<SkImageFilter> colorSource(new SkBitmapSource(colorBitmap));
-    SkAutoTUnref<SkImageFilter> displSource(new SkBitmapSource(displBitmap));
-    SkDisplacementMapEffect::ChannelSelectorType typeX = toSkiaMode(m_xChannelSelector);
-    SkDisplacementMapEffect::ChannelSelectorType typeY = toSkiaMode(m_yChannelSelector);
-    // FIXME : Only applyHorizontalScale is used and applyVerticalScale is ignored
-    // This can be fixed by adding a 2nd scale parameter to SkDisplacementMapEffect
-    SkAutoTUnref<SkImageFilter> displEffect(new SkDisplacementMapEffect(
-        typeX, typeY, SkFloatToScalar(filter()->applyHorizontalScale(m_scale)), displSource, colorSource));
-    SkPaint paint;
-    paint.setImageFilter(displEffect);
-    resultImage->context()->drawBitmap(colorBitmap, 0, 0, &paint);
-    return true;
-}
-
-PassRefPtr<SkImageFilter> FEDisplacementMap::createImageFilter(SkiaImageFilterBuilder* builder)
-{
-    RefPtr<SkImageFilter> color = builder->build(inputEffect(0), operatingColorSpace());
-    RefPtr<SkImageFilter> displ = builder->build(inputEffect(1), operatingColorSpace());
-    SkDisplacementMapEffect::ChannelSelectorType typeX = toSkiaMode(m_xChannelSelector);
-    SkDisplacementMapEffect::ChannelSelectorType typeY = toSkiaMode(m_yChannelSelector);
-    SkImageFilter::CropRect cropRect = getCropRect(builder->cropOffset());
-    // FIXME : Only applyHorizontalScale is used and applyVerticalScale is ignored
-    // This can be fixed by adding a 2nd scale parameter to SkDisplacementMapEffect
-    return adoptRef(new SkDisplacementMapEffect(typeX, typeY, SkFloatToScalar(filter()->applyHorizontalScale(m_scale)), displ.get(), color.get(), &cropRect));
-}
-
-static TextStream& operator<<(TextStream& ts, const ChannelSelectorType& type)
-{
-    switch (type) {
-    case CHANNEL_UNKNOWN:
-        ts << "UNKNOWN";
-        break;
-    case CHANNEL_R:
-        ts << "RED";
-        break;
-    case CHANNEL_G:
-        ts << "GREEN";
-        break;
-    case CHANNEL_B:
-        ts << "BLUE";
-        break;
-    case CHANNEL_A:
-        ts << "ALPHA";
-        break;
-    }
-    return ts;
-}
-
-TextStream& FEDisplacementMap::externalRepresentation(TextStream& ts, int indent) const
-{
-    writeIndent(ts, indent);
-    ts << "[feDisplacementMap";
-    FilterEffect::externalRepresentation(ts);
-    ts << " scale=\"" << m_scale << "\" "
-       << "xChannelSelector=\"" << m_xChannelSelector << "\" "
-       << "yChannelSelector=\"" << m_yChannelSelector << "\"]\n";
-    inputEffect(0)->externalRepresentation(ts, indent + 1);
-    inputEffect(1)->externalRepresentation(ts, indent + 1);
-    return ts;
-}
-
-} // namespace WebCore