GrColorInfo.h

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/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef GrColorInfo_DEFINED
#define GrColorInfo_DEFINED
 
#include "include/core/SkAlphaType.h"
#include "include/core/SkRefCnt.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/gpu/ganesh/GrColorSpaceXform.h"
 
class SkColorInfo;
class SkColorSpace;
/**
 * All the info needed to interpret a color: Color type + alpha type + color space. Also caches
 * the GrColorSpaceXform from sRGB. */
class GrColorInfo {
public:
    GrColorInfo();
    GrColorInfo(const GrColorInfo&);
    GrColorInfo& operator=(const GrColorInfo&);
    GrColorInfo(GrColorType, SkAlphaType, sk_sp<SkColorSpace>);
    /* implicit */ GrColorInfo(const SkColorInfo&);
    ~GrColorInfo();
 
    bool operator==(const GrColorInfo& that) const;
    bool operator!=(const GrColorInfo& that) const { return !(*this == that); }
 
    GrColorInfo makeColorType(GrColorType ct) const;
 
    bool isLinearlyBlended() const;
 
    SkColorSpace* colorSpace() const;
    sk_sp<SkColorSpace> refColorSpace() const;
 
    GrColorSpaceXform* colorSpaceXformFromSRGB() const { return fColorXformFromSRGB.get(); }
    sk_sp<GrColorSpaceXform> refColorSpaceXformFromSRGB() const { return fColorXformFromSRGB; }
 
    GrColorType colorType() const { return fColorType; }
    SkAlphaType alphaType() const { return fAlphaType; }
 
    bool isAlphaOnly() const { return GrColorTypeIsAlphaOnly(fColorType); }
 
    bool isValid() const {
        return fColorType != GrColorType::kUnknown && fAlphaType != kUnknown_SkAlphaType;
    }
 
private:
    sk_sp<SkColorSpace> fColorSpace;
    sk_sp<GrColorSpaceXform> fColorXformFromSRGB;
    GrColorType fColorType = GrColorType::kUnknown;
    SkAlphaType fAlphaType = kUnknown_SkAlphaType;
};
 
#endif