SkLinearGradient.h

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/*
 * Copyright 2012 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkLinearGradient_DEFINED
#define SkLinearGradient_DEFINED
 
#include "include/core/SkFlattenable.h"
#include "include/core/SkPoint.h"
#include "src/shaders/gradients/SkGradientBaseShader.h"
 
class SkArenaAlloc;
class SkMatrix;
class SkRasterPipeline;
class SkReadBuffer;
class SkWriteBuffer;
 
class SkLinearGradient final : public SkGradientBaseShader {
public:
    SkLinearGradient(const SkPoint pts[2], const Descriptor&);
 
    GradientType asGradient(GradientInfo* info, SkMatrix* localMatrix) const override;
 
    const SkPoint& start() const { return fStart; }
    const SkPoint& end() const { return fEnd; }
protected:
    SkLinearGradient(SkReadBuffer& buffer);
    void flatten(SkWriteBuffer& buffer) const override;
 
    void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline,
                              SkRasterPipeline* postPipeline) const final;
 
private:
    friend void ::SkRegisterLinearGradientShaderFlattenable();
    SK_FLATTENABLE_HOOKS(SkLinearGradient)
 
    class LinearGradient4fContext;
 
    friend class SkGradientShader;
    using INHERITED = SkGradientBaseShader;
    const SkPoint fStart;
    const SkPoint fEnd;
};
 
#endif