1 /* 2 * Copyright 2019 Google LLC 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrImageInfo_DEFINED 9 #define GrImageInfo_DEFINED 10 11 #include "include/core/SkImageInfo.h" 12 #include "include/private/GrTypesPriv.h" 13 #include "src/gpu/GrColorInfo.h" 14 15 class GrImageInfo { 16 public: 17 GrImageInfo() = default; 18 GrImageInfo(const SkImageInfo & info)19 /* implicit */ GrImageInfo(const SkImageInfo& info) 20 : fColorInfo(info.colorInfo()), fDimensions(info.dimensions()) {} 21 GrImageInfo(GrColorType ct,SkAlphaType at,sk_sp<SkColorSpace> cs,int w,int h)22 GrImageInfo(GrColorType ct, SkAlphaType at, sk_sp<SkColorSpace> cs, int w, int h) 23 : fColorInfo(ct, at, std::move(cs)), fDimensions{w,h} {} 24 GrImageInfo(GrColorType ct,SkAlphaType at,sk_sp<SkColorSpace> cs,const SkISize & dimensions)25 GrImageInfo(GrColorType ct, SkAlphaType at, sk_sp<SkColorSpace> cs, const SkISize& dimensions) 26 : fColorInfo(ct, at, std::move(cs)), fDimensions(dimensions) {} 27 GrImageInfo(const GrColorInfo & info,const SkISize & dimensions)28 GrImageInfo(const GrColorInfo& info, const SkISize& dimensions) 29 : fColorInfo(info), fDimensions(dimensions) {} 30 GrImageInfo(GrColorInfo && info,const SkISize & dimensions)31 GrImageInfo(GrColorInfo&& info, const SkISize& dimensions) 32 : fColorInfo(std::move(info)), fDimensions(dimensions) {} 33 34 GrImageInfo(const GrImageInfo&) = default; 35 GrImageInfo(GrImageInfo&&) = default; 36 GrImageInfo& operator=(const GrImageInfo&) = default; 37 GrImageInfo& operator=(GrImageInfo&&) = default; 38 makeColorType(GrColorType ct)39 GrImageInfo makeColorType(GrColorType ct) const { 40 return {ct, this->alphaType(), this->refColorSpace(), this->width(), this->height()}; 41 } 42 makeAlphaType(SkAlphaType at)43 GrImageInfo makeAlphaType(SkAlphaType at) const { 44 return {this->colorType(), at, this->refColorSpace(), this->width(), this->height()}; 45 } 46 makeWH(int width,int height)47 GrImageInfo makeWH(int width, int height) const { 48 return {this->colorType(), this->alphaType(), this->refColorSpace(), width, height}; 49 } 50 colorInfo()51 const GrColorInfo& colorInfo() const { return fColorInfo; } 52 colorType()53 GrColorType colorType() const { return fColorInfo.colorType(); } 54 alphaType()55 SkAlphaType alphaType() const { return fColorInfo.alphaType(); } 56 colorSpace()57 SkColorSpace* colorSpace() const { return fColorInfo.colorSpace(); } 58 refColorSpace()59 sk_sp<SkColorSpace> refColorSpace() const { return fColorInfo.refColorSpace(); } 60 dimensions()61 SkISize dimensions() const { return fDimensions; } 62 width()63 int width() const { return fDimensions.width(); } 64 height()65 int height() const { return fDimensions.height(); } 66 bpp()67 size_t bpp() const { return GrColorTypeBytesPerPixel(this->colorType()); } 68 minRowBytes()69 size_t minRowBytes() const { return this->bpp() * this->width(); } 70 71 /** 72 * Place this image rect in a surface of dimensions surfaceWidth x surfaceHeight size offset at 73 * surfacePt and then clip the pixel rectangle to the bounds of the surface. If the pixel rect 74 * does not intersect the rectangle or is empty then return false. If clipped, the input 75 * surfacePt, the width/height of this GrImageInfo, and the data pointer will be modified to 76 * reflect the clipped rectangle. 77 */ 78 template <typename T> clip(int surfaceWidth,int surfaceHeight,SkIPoint * surfacePt,T ** data,size_t rowBytes)79 bool clip(int surfaceWidth, int surfaceHeight, SkIPoint* surfacePt, T** data, size_t rowBytes) { 80 auto bounds = SkIRect::MakeWH(surfaceWidth, surfaceHeight); 81 auto rect = SkIRect::MakeXYWH(surfacePt->fX, surfacePt->fY, this->width(), this->height()); 82 if (!rect.intersect(bounds)) { 83 return false; 84 } 85 *data = SkTAddOffset<T>(*data, (rect.fTop - surfacePt->fY) * rowBytes + 86 (rect.fLeft - surfacePt->fX) * this->bpp()); 87 surfacePt->fX = rect.fLeft; 88 surfacePt->fY = rect.fTop; 89 fDimensions = rect.size(); 90 return true; 91 } 92 isValid()93 bool isValid() const { return fColorInfo.isValid() && this->width() > 0 && this->height() > 0; } 94 95 private: 96 GrColorInfo fColorInfo = {}; 97 SkISize fDimensions; 98 }; 99 100 #endif 101