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

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

Index: Source/core/platform/graphics/filters/FEColorMatrix.cpp
diff --git a/Source/core/platform/graphics/filters/FEColorMatrix.cpp b/Source/core/platform/graphics/filters/FEColorMatrix.cpp
deleted file mode 100644
index 1e2c5a41816b3eb5536f9fc5d227b14ca13fc307..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/filters/FEColorMatrix.cpp
+++ /dev/null
@@ -1,334 +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) 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/FEColorMatrix.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/MathExtras.h"
-#include "wtf/Uint8ClampedArray.h"
-
-#include "SkColorFilterImageFilter.h"
-#include "SkColorMatrixFilter.h"
-
-namespace WebCore {
-
-FEColorMatrix::FEColorMatrix(Filter* filter, ColorMatrixType type, const Vector<float>& values)
-    : FilterEffect(filter)
-    , m_type(type)
-    , m_values(values)
-{
-}
-
-PassRefPtr<FEColorMatrix> FEColorMatrix::create(Filter* filter, ColorMatrixType type, const Vector<float>& values)
-{
-    return adoptRef(new FEColorMatrix(filter, type, values));
-}
-
-ColorMatrixType FEColorMatrix::type() const
-{
-    return m_type;
-}
-
-bool FEColorMatrix::setType(ColorMatrixType type)
-{
-    if (m_type == type)
-        return false;
-    m_type = type;
-    return true;
-}
-
-const Vector<float>& FEColorMatrix::values() const
-{
-    return m_values;
-}
-
-bool FEColorMatrix::setValues(const Vector<float> &values)
-{
-    if (m_values == values)
-        return false;
-    m_values = values;
-    return true;
-}
-
-inline void matrix(float& red, float& green, float& blue, float& alpha, const Vector<float>& values)
-{
-    float r = values[0] * red + values[1] * green + values[2] * blue + values[3] * alpha + values[4] * 255;
-    float g = values[5] * red + values[6] * green + values[7] * blue + values[8] * alpha + values[9] * 255;
-    float b = values[10] * red + values[11] * green + values[12] * blue + values[13] * alpha + values[14] * 255;
-    float a = values[15] * red + values[16] * green + values[17] * blue + values[18] * alpha + values[19] * 255;
-
-    red = r;
-    green = g;
-    blue = b;
-    alpha = a;
-}
-
-inline void saturateAndHueRotate(float& red, float& green, float& blue, const float* components)
-{
-    float r = red * components[0] + green * components[1] + blue * components[2];
-    float g = red * components[3] + green * components[4] + blue * components[5];
-    float b = red * components[6] + green * components[7] + blue * components[8];
-
-    red = r;
-    green = g;
-    blue = b;
-}
-
-inline void luminance(float& red, float& green, float& blue, float& alpha)
-{
-    alpha = 0.2125 * red + 0.7154 * green + 0.0721 * blue;
-    red = 0;
-    green = 0;
-    blue = 0;
-}
-
-template<ColorMatrixType filterType>
-void effectType(Uint8ClampedArray* pixelArray, const Vector<float>& values)
-{
-    unsigned pixelArrayLength = pixelArray->length();
-    float components[9];
-
-    if (filterType == FECOLORMATRIX_TYPE_SATURATE)
-        FEColorMatrix::calculateSaturateComponents(components, values[0]);
-    else if (filterType == FECOLORMATRIX_TYPE_HUEROTATE)
-        FEColorMatrix::calculateHueRotateComponents(components, values[0]);
-
-    for (unsigned pixelByteOffset = 0; pixelByteOffset < pixelArrayLength; pixelByteOffset += 4) {
-        float red = pixelArray->item(pixelByteOffset);
-        float green = pixelArray->item(pixelByteOffset + 1);
-        float blue = pixelArray->item(pixelByteOffset + 2);
-        float alpha = pixelArray->item(pixelByteOffset + 3);
-
-        switch (filterType) {
-            case FECOLORMATRIX_TYPE_MATRIX:
-                matrix(red, green, blue, alpha, values);
-                break;
-            case FECOLORMATRIX_TYPE_SATURATE:
-            case FECOLORMATRIX_TYPE_HUEROTATE:
-                saturateAndHueRotate(red, green, blue, components);
-                break;
-            case FECOLORMATRIX_TYPE_LUMINANCETOALPHA:
-                luminance(red, green, blue, alpha);
-                break;
-        }
-
-        pixelArray->set(pixelByteOffset, red);
-        pixelArray->set(pixelByteOffset + 1, green);
-        pixelArray->set(pixelByteOffset + 2, blue);
-        pixelArray->set(pixelByteOffset + 3, alpha);
-    }
-}
-
-void FEColorMatrix::applySoftware()
-{
-    FilterEffect* in = inputEffect(0);
-
-    ImageBuffer* resultImage = createImageBufferResult();
-    if (!resultImage)
-        return;
-
-    resultImage->context()->drawImageBuffer(in->asImageBuffer(), drawingRegionOfInputImage(in->absolutePaintRect()));
-
-    IntRect imageRect(IntPoint(), absolutePaintRect().size());
-    RefPtr<Uint8ClampedArray> pixelArray = resultImage->getUnmultipliedImageData(imageRect);
-
-    switch (m_type) {
-    case FECOLORMATRIX_TYPE_UNKNOWN:
-        break;
-    case FECOLORMATRIX_TYPE_MATRIX:
-        effectType<FECOLORMATRIX_TYPE_MATRIX>(pixelArray.get(), m_values);
-        break;
-    case FECOLORMATRIX_TYPE_SATURATE:
-        effectType<FECOLORMATRIX_TYPE_SATURATE>(pixelArray.get(), m_values);
-        break;
-    case FECOLORMATRIX_TYPE_HUEROTATE:
-        effectType<FECOLORMATRIX_TYPE_HUEROTATE>(pixelArray.get(), m_values);
-        break;
-    case FECOLORMATRIX_TYPE_LUMINANCETOALPHA:
-        effectType<FECOLORMATRIX_TYPE_LUMINANCETOALPHA>(pixelArray.get(), m_values);
-        setIsAlphaImage(true);
-        break;
-    }
-
-    resultImage->putByteArray(Unmultiplied, pixelArray.get(), imageRect.size(), imageRect, IntPoint());
-}
-
-static void saturateMatrix(float s, SkScalar matrix[20])
-{
-    matrix[0] = 0.213f + 0.787f * s;
-    matrix[1] = 0.715f - 0.715f * s;
-    matrix[2] = 0.072f - 0.072f * s;
-    matrix[3] = matrix[4] = 0;
-    matrix[5] = 0.213f - 0.213f * s;
-    matrix[6] = 0.715f + 0.285f * s;
-    matrix[7] = 0.072f - 0.072f * s;
-    matrix[8] = matrix[9] = 0;
-    matrix[10] = 0.213f - 0.213f * s;
-    matrix[11] = 0.715f - 0.715f * s;
-    matrix[12] = 0.072f + 0.928f * s;
-    matrix[13] = matrix[14] = 0;
-    matrix[15] = matrix[16] = matrix[17] = 0;
-    matrix[18] = 1;
-    matrix[19] = 0;
-}
-
-static void hueRotateMatrix(float hue, SkScalar matrix[20])
-{
-    float cosHue = cosf(hue * piFloat / 180);
-    float sinHue = sinf(hue * piFloat / 180);
-    matrix[0] = 0.213f + cosHue * 0.787f - sinHue * 0.213f;
-    matrix[1] = 0.715f - cosHue * 0.715f - sinHue * 0.715f;
-    matrix[2] = 0.072f - cosHue * 0.072f + sinHue * 0.928f;
-    matrix[3] = matrix[4] = 0;
-    matrix[5] = 0.213f - cosHue * 0.213f + sinHue * 0.143f;
-    matrix[6] = 0.715f + cosHue * 0.285f + sinHue * 0.140f;
-    matrix[7] = 0.072f - cosHue * 0.072f - sinHue * 0.283f;
-    matrix[8] = matrix[9] = 0;
-    matrix[10] = 0.213f - cosHue * 0.213f - sinHue * 0.787f;
-    matrix[11] = 0.715f - cosHue * 0.715f + sinHue * 0.715f;
-    matrix[12] = 0.072f + cosHue * 0.928f + sinHue * 0.072f;
-    matrix[13] = matrix[14] = 0;
-    matrix[15] = matrix[16] = matrix[17] = 0;
-    matrix[18] = 1;
-    matrix[19] = 0;
-}
-
-static void luminanceToAlphaMatrix(SkScalar matrix[20])
-{
-    memset(matrix, 0, 20 * sizeof(SkScalar));
-    matrix[15] = 0.2125f;
-    matrix[16] = 0.7154f;
-    matrix[17] = 0.0721f;
-}
-
-static SkColorFilter* createColorFilter(ColorMatrixType type, const float* values)
-{
-    SkScalar matrix[20];
-    switch (type) {
-    case FECOLORMATRIX_TYPE_UNKNOWN:
-        break;
-    case FECOLORMATRIX_TYPE_MATRIX:
-        for (int i = 0; i < 20; ++i)
-            matrix[i] = values[i];
-
-        matrix[4] *= SkScalar(255);
-        matrix[9] *= SkScalar(255);
-        matrix[14] *= SkScalar(255);
-        matrix[19] *= SkScalar(255);
-        break;
-    case FECOLORMATRIX_TYPE_SATURATE:
-        saturateMatrix(values[0], matrix);
-        break;
-    case FECOLORMATRIX_TYPE_HUEROTATE:
-        hueRotateMatrix(values[0], matrix);
-        break;
-    case FECOLORMATRIX_TYPE_LUMINANCETOALPHA:
-        luminanceToAlphaMatrix(matrix);
-        break;
-    }
-    return new SkColorMatrixFilter(matrix);
-}
-
-bool FEColorMatrix::applySkia()
-{
-    ImageBuffer* resultImage = createImageBufferResult();
-    if (!resultImage)
-        return false;
-
-    FilterEffect* in = inputEffect(0);
-
-    SkRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
-
-    SkAutoTUnref<SkColorFilter> filter(createColorFilter(m_type, m_values.data()));
-
-    RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
-    RefPtr<NativeImageSkia> nativeImage = image->nativeImageForCurrentFrame();
-    if (!nativeImage)
-        return false;
-
-    SkPaint paint;
-    paint.setColorFilter(filter);
-    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
-    resultImage->context()->drawBitmap(nativeImage->bitmap(), drawingRegion.fLeft, drawingRegion.fTop, &paint);
-    return true;
-}
-
-PassRefPtr<SkImageFilter> FEColorMatrix::createImageFilter(SkiaImageFilterBuilder* builder)
-{
-    RefPtr<SkImageFilter> input(builder->build(inputEffect(0), operatingColorSpace()));
-    SkAutoTUnref<SkColorFilter> filter(createColorFilter(m_type, m_values.data()));
-    SkImageFilter::CropRect rect = getCropRect(builder->cropOffset());
-    return adoptRef(SkColorFilterImageFilter::Create(filter, input.get(), &rect));
-}
-
-static TextStream& operator<<(TextStream& ts, const ColorMatrixType& type)
-{
-    switch (type) {
-    case FECOLORMATRIX_TYPE_UNKNOWN:
-        ts << "UNKNOWN";
-        break;
-    case FECOLORMATRIX_TYPE_MATRIX:
-        ts << "MATRIX";
-        break;
-    case FECOLORMATRIX_TYPE_SATURATE:
-        ts << "SATURATE";
-        break;
-    case FECOLORMATRIX_TYPE_HUEROTATE:
-        ts << "HUEROTATE";
-        break;
-    case FECOLORMATRIX_TYPE_LUMINANCETOALPHA:
-        ts << "LUMINANCETOALPHA";
-        break;
-    }
-    return ts;
-}
-
-TextStream& FEColorMatrix::externalRepresentation(TextStream& ts, int indent) const
-{
-    writeIndent(ts, indent);
-    ts << "[feColorMatrix";
-    FilterEffect::externalRepresentation(ts);
-    ts << " type=\"" << m_type << "\"";
-    if (!m_values.isEmpty()) {
-        ts << " values=\"";
-        Vector<float>::const_iterator ptr = m_values.begin();
-        const Vector<float>::const_iterator end = m_values.end();
-        while (ptr < end) {
-            ts << *ptr;
-            ++ptr;
-            if (ptr < end)
-                ts << " ";
-        }
-        ts << "\"";
-    }
-    ts << "]\n";
-    inputEffect(0)->externalRepresentation(ts, indent + 1);
-    return ts;
-}
-
-} // namespace WebCore