| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkImageShader_DEFINED |
| #define SkImageShader_DEFINED |
| |
| #include "include/core/SkFlattenable.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkM44.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSamplingOptions.h" |
| #include "include/core/SkTypes.h" |
| #include "src/shaders/SkShaderBase.h" |
| |
| class SkArenaAlloc; |
| class SkMatrix; |
| class SkReadBuffer; |
| class SkShader; |
| class SkWriteBuffer; |
| enum class SkTileMode; |
| struct SkStageRec; |
| |
| class SkImageShader : public SkShaderBase { |
| public: |
| static sk_sp<SkShader> Make(sk_sp<SkImage>, |
| SkTileMode tmx, |
| SkTileMode tmy, |
| const SkSamplingOptions&, |
| const SkMatrix* localMatrix, |
| bool clampAsIfUnpremul = false); |
| |
| static sk_sp<SkShader> MakeRaw(sk_sp<SkImage>, |
| SkTileMode tmx, |
| SkTileMode tmy, |
| const SkSamplingOptions&, |
| const SkMatrix* localMatrix); |
| |
| // TODO(skbug.com/12784): Requires SkImage to be texture backed, and created SkShader can only |
| // be used on GPU-backed surfaces. |
| static sk_sp<SkShader> MakeSubset(sk_sp<SkImage>, |
| const SkRect& subset, |
| SkTileMode tmx, |
| SkTileMode tmy, |
| const SkSamplingOptions&, |
| const SkMatrix* localMatrix, |
| bool clampAsIfUnpremul = false); |
| |
| SkImageShader(sk_sp<SkImage>, |
| const SkRect& subset, |
| SkTileMode tmx, SkTileMode tmy, |
| const SkSamplingOptions&, |
| bool raw, |
| bool clampAsIfUnpremul); |
| |
| bool isOpaque() const override; |
| |
| ShaderType type() const override { return ShaderType::kImage; } |
| |
| static SkM44 CubicResamplerMatrix(float B, float C); |
| |
| SkTileMode tileModeX() const { return fTileModeX; } |
| SkTileMode tileModeY() const { return fTileModeY; } |
| sk_sp<SkImage> image() const { return fImage; } |
| SkSamplingOptions sampling() const { return fSampling; } |
| SkRect subset() const { return fSubset; } |
| bool isRaw() const { return fRaw; } |
| |
| private: |
| SK_FLATTENABLE_HOOKS(SkImageShader) |
| |
| void flatten(SkWriteBuffer&) const override; |
| #ifdef SK_ENABLE_LEGACY_SHADERCONTEXT |
| Context* onMakeContext(const ContextRec&, SkArenaAlloc* storage) const override; |
| #endif |
| SkImage* onIsAImage(SkMatrix*, SkTileMode*) const override; |
| |
| bool appendStages(const SkStageRec&, const SkShaders::MatrixRec&) const override; |
| |
| sk_sp<SkImage> fImage; |
| const SkSamplingOptions fSampling; |
| const SkTileMode fTileModeX; |
| const SkTileMode fTileModeY; |
| |
| // TODO(skbug.com/12784): This is only supported for GPU images currently. |
| // If subset == (0,0,w,h) of the image, then no subset is applied. Subset will not be empty. |
| const SkRect fSubset; |
| |
| const bool fRaw; |
| const bool fClampAsIfUnpremul; |
| |
| friend class SkShaderBase; |
| using INHERITED = SkShaderBase; |
| }; |
| |
| #endif |