Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/filters/FilterOperation.h

Index: Source/core/platform/graphics/filters/FilterOperation.h
diff --git a/Source/core/platform/graphics/filters/FilterOperation.h b/Source/core/platform/graphics/filters/FilterOperation.h
deleted file mode 100644
index 489bfe6a6b7bdc25b790caaaa5eadce8b581e73b..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/filters/FilterOperation.h
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- * Copyright (C) 2011 Apple 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef FilterOperation_h
-#define FilterOperation_h
-
-#include "core/platform/graphics/filters/Filter.h"
-#include "core/platform/graphics/filters/ReferenceFilter.h"
-#include "platform/Length.h"
-#include "platform/graphics/Color.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/text/WTFString.h"
-
-namespace WebCore {
-
-// CSS Filters
-
-class FilterOperation : public RefCounted<FilterOperation> {
-public:
-    enum OperationType {
-        REFERENCE, // url(#somefilter)
-        GRAYSCALE,
-        SEPIA,
-        SATURATE,
-        HUE_ROTATE,
-        INVERT,
-        OPACITY,
-        BRIGHTNESS,
-        CONTRAST,
-        BLUR,
-        DROP_SHADOW,
-        CUSTOM,
-        VALIDATED_CUSTOM,
-        NONE
-    };
-
-    static bool canInterpolate(FilterOperation::OperationType type)
-    {
-        switch (type) {
-        case GRAYSCALE:
-        case SEPIA:
-        case SATURATE:
-        case HUE_ROTATE:
-        case INVERT:
-        case OPACITY:
-        case BRIGHTNESS:
-        case CONTRAST:
-        case BLUR:
-        case DROP_SHADOW:
-        case CUSTOM:
-        case VALIDATED_CUSTOM:
-            return true;
-        case REFERENCE:
-            return false;
-        case NONE:
-            break;
-        }
-        ASSERT_NOT_REACHED();
-        return false;
-    }
-
-    virtual ~FilterOperation() { }
-
-    static PassRefPtr<FilterOperation> blend(const FilterOperation* from, const FilterOperation* to, double progress);
-    virtual bool operator==(const FilterOperation&) const = 0;
-    bool operator!=(const FilterOperation& o) const { return !(*this == o); }
-
-    OperationType type() const { return m_type; }
-    virtual bool isSameType(const FilterOperation& o) const { return o.type() == m_type; }
-
-    // True if the alpha channel of any pixel can change under this operation.
-    virtual bool affectsOpacity() const { return false; }
-    // True if the the value of one pixel can affect the value of another pixel under this operation, such as blur.
-    virtual bool movesPixels() const { return false; }
-
-protected:
-    FilterOperation(OperationType type)
-        : m_type(type)
-    {
-    }
-
-    OperationType m_type;
-
-private:
-    virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress) const = 0;
-};
-
-#define DEFINE_FILTER_OPERATION_TYPE_CASTS(thisType, operationType) \
-    DEFINE_TYPE_CASTS(thisType, FilterOperation, op, op->type() == FilterOperation::operationType, op.type() == FilterOperation::operationType);
-
-class ReferenceFilterOperation : public FilterOperation {
-public:
-    static PassRefPtr<ReferenceFilterOperation> create(const String& url, const String& fragment)
-    {
-        return adoptRef(new ReferenceFilterOperation(url, fragment));
-    }
-
-    virtual bool affectsOpacity() const { return true; }
-    virtual bool movesPixels() const { return true; }
-
-    const String& url() const { return m_url; }
-    const String& fragment() const { return m_fragment; }
-
-    ReferenceFilter* filter() const { return m_filter.get(); }
-    void setFilter(PassRefPtr<ReferenceFilter> filter) { m_filter = filter; }
-
-private:
-    virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress) const OVERRIDE
-    {
-        ASSERT_NOT_REACHED();
-        return 0;
-    }
-
-    virtual bool operator==(const FilterOperation& o) const
-    {
-        if (!isSameType(o))
-            return false;
-        const ReferenceFilterOperation* other = static_cast<const ReferenceFilterOperation*>(&o);
-        return m_url == other->m_url;
-    }
-
-    ReferenceFilterOperation(const String& url, const String& fragment)
-        : FilterOperation(REFERENCE)
-        , m_url(url)
-        , m_fragment(fragment)
-    {
-    }
-
-    String m_url;
-    String m_fragment;
-    RefPtr<ReferenceFilter> m_filter;
-};
-
-DEFINE_FILTER_OPERATION_TYPE_CASTS(ReferenceFilterOperation, REFERENCE);
-
-// GRAYSCALE, SEPIA, SATURATE and HUE_ROTATE are variations on a basic color matrix effect.
-// For HUE_ROTATE, the angle of rotation is stored in m_amount.
-class BasicColorMatrixFilterOperation : public FilterOperation {
-public:
-    static PassRefPtr<BasicColorMatrixFilterOperation> create(double amount, OperationType type)
-    {
-        return adoptRef(new BasicColorMatrixFilterOperation(amount, type));
-    }
-
-    double amount() const { return m_amount; }
-
-
-private:
-    virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress) const OVERRIDE;
-    virtual bool operator==(const FilterOperation& o) const
-    {
-        if (!isSameType(o))
-            return false;
-        const BasicColorMatrixFilterOperation* other = static_cast<const BasicColorMatrixFilterOperation*>(&o);
-        return m_amount == other->m_amount;
-    }
-
-    BasicColorMatrixFilterOperation(double amount, OperationType type)
-        : FilterOperation(type)
-        , m_amount(amount)
-    {
-    }
-
-    double m_amount;
-};
-
-inline bool isBasicColorMatrixFilterOperation(const FilterOperation& operation)
-{
-    FilterOperation::OperationType type = operation.type();
-    return type == FilterOperation::GRAYSCALE || type == FilterOperation::SEPIA || type == FilterOperation::SATURATE || type == FilterOperation::HUE_ROTATE;
-}
-
-DEFINE_TYPE_CASTS(BasicColorMatrixFilterOperation, FilterOperation, op, isBasicColorMatrixFilterOperation(*op), isBasicColorMatrixFilterOperation(op));
-
-// INVERT, BRIGHTNESS, CONTRAST and OPACITY are variations on a basic component transfer effect.
-class BasicComponentTransferFilterOperation : public FilterOperation {
-public:
-    static PassRefPtr<BasicComponentTransferFilterOperation> create(double amount, OperationType type)
-    {
-        return adoptRef(new BasicComponentTransferFilterOperation(amount, type));
-    }
-
-    double amount() const { return m_amount; }
-
-    virtual bool affectsOpacity() const { return m_type == OPACITY; }
-
-
-private:
-    virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress) const OVERRIDE;
-    virtual bool operator==(const FilterOperation& o) const
-    {
-        if (!isSameType(o))
-            return false;
-        const BasicComponentTransferFilterOperation* other = static_cast<const BasicComponentTransferFilterOperation*>(&o);
-        return m_amount == other->m_amount;
-    }
-
-    BasicComponentTransferFilterOperation(double amount, OperationType type)
-        : FilterOperation(type)
-        , m_amount(amount)
-    {
-    }
-
-    double m_amount;
-};
-
-inline bool isBasicComponentTransferFilterOperation(const FilterOperation& operation)
-{
-    FilterOperation::OperationType type = operation.type();
-    return type == FilterOperation::INVERT || type == FilterOperation::OPACITY || type == FilterOperation::BRIGHTNESS || type == FilterOperation::CONTRAST;
-}
-
-DEFINE_TYPE_CASTS(BasicComponentTransferFilterOperation, FilterOperation, op, isBasicComponentTransferFilterOperation(*op), isBasicComponentTransferFilterOperation(op));
-
-class BlurFilterOperation : public FilterOperation {
-public:
-    static PassRefPtr<BlurFilterOperation> create(Length stdDeviation)
-    {
-        return adoptRef(new BlurFilterOperation(stdDeviation));
-    }
-
-    Length stdDeviation() const { return m_stdDeviation; }
-
-    virtual bool affectsOpacity() const { return true; }
-    virtual bool movesPixels() const { return true; }
-
-
-private:
-    virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress) const OVERRIDE;
-    virtual bool operator==(const FilterOperation& o) const
-    {
-        if (!isSameType(o))
-            return false;
-        const BlurFilterOperation* other = static_cast<const BlurFilterOperation*>(&o);
-        return m_stdDeviation == other->m_stdDeviation;
-    }
-
-    BlurFilterOperation(Length stdDeviation)
-        : FilterOperation(BLUR)
-        , m_stdDeviation(stdDeviation)
-    {
-    }
-
-    Length m_stdDeviation;
-};
-
-DEFINE_FILTER_OPERATION_TYPE_CASTS(BlurFilterOperation, BLUR);
-
-class DropShadowFilterOperation : public FilterOperation {
-public:
-    static PassRefPtr<DropShadowFilterOperation> create(const IntPoint& location, int stdDeviation, Color color)
-    {
-        return adoptRef(new DropShadowFilterOperation(location, stdDeviation, color));
-    }
-
-    int x() const { return m_location.x(); }
-    int y() const { return m_location.y(); }
-    IntPoint location() const { return m_location; }
-    int stdDeviation() const { return m_stdDeviation; }
-    Color color() const { return m_color; }
-
-    virtual bool affectsOpacity() const { return true; }
-    virtual bool movesPixels() const { return true; }
-
-
-private:
-    virtual PassRefPtr<FilterOperation> blend(const FilterOperation* from, double progress) const OVERRIDE;
-    virtual bool operator==(const FilterOperation& o) const
-    {
-        if (!isSameType(o))
-            return false;
-        const DropShadowFilterOperation* other = static_cast<const DropShadowFilterOperation*>(&o);
-        return m_location == other->m_location && m_stdDeviation == other->m_stdDeviation && m_color == other->m_color;
-    }
-
-    DropShadowFilterOperation(const IntPoint& location, int stdDeviation, Color color)
-        : FilterOperation(DROP_SHADOW)
-        , m_location(location)
-        , m_stdDeviation(stdDeviation)
-        , m_color(color)
-    {
-    }
-
-    IntPoint m_location; // FIXME: should location be in Lengths?
-    int m_stdDeviation;
-    Color m_color;
-};
-
-DEFINE_FILTER_OPERATION_TYPE_CASTS(DropShadowFilterOperation, DROP_SHADOW);
-
-} // namespace WebCore
-
-
-#endif // FilterOperation_h