// Copyright 2016 PDFium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com #ifndef CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_ #define CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_ #include <memory> #include <tuple> #include <vector> #include "core/fpdfapi/page/cpdf_shadingpattern.h" #include "core/fpdfapi/parser/cpdf_stream_acc.h" #include "core/fxcrt/fx_basic.h" #include "core/fxcrt/fx_system.h" class CPDF_MeshVertex { public: CPDF_MeshVertex(); CPDF_MeshVertex(const CPDF_MeshVertex&); ~CPDF_MeshVertex(); CFX_PointF position; FX_FLOAT r; FX_FLOAT g; FX_FLOAT b; }; class CFX_Matrix; class CPDF_ColorSpace; class CPDF_Function; class CPDF_Stream; class CPDF_MeshStream { public: CPDF_MeshStream(ShadingType type, const std::vector<std::unique_ptr<CPDF_Function>>& funcs, CPDF_Stream* pShadingStream, CPDF_ColorSpace* pCS); bool Load(); bool CanReadFlag() const; bool CanReadCoords() const; bool CanReadColor() const; uint32_t ReadFlag(); CFX_PointF ReadCoords(); std::tuple<FX_FLOAT, FX_FLOAT, FX_FLOAT> ReadColor(); bool ReadVertex(const CFX_Matrix& pObject2Bitmap, CPDF_MeshVertex* vertex, uint32_t* flag); bool ReadVertexRow(const CFX_Matrix& pObject2Bitmap, int count, CPDF_MeshVertex* vertex); CFX_BitStream* BitStream() { return &m_BitStream; } uint32_t ComponentBits() const { return m_nComponentBits; } uint32_t Components() const { return m_nComponents; } private: static const uint32_t kMaxComponents = 8; const ShadingType m_type; const std::vector<std::unique_ptr<CPDF_Function>>& m_funcs; CPDF_Stream* const m_pShadingStream; CPDF_ColorSpace* const m_pCS; uint32_t m_nCoordBits; uint32_t m_nComponentBits; uint32_t m_nFlagBits; uint32_t m_nComponents; uint32_t m_CoordMax; uint32_t m_ComponentMax; FX_FLOAT m_xmin; FX_FLOAT m_xmax; FX_FLOAT m_ymin; FX_FLOAT m_ymax; FX_FLOAT m_ColorMin[kMaxComponents]; FX_FLOAT m_ColorMax[kMaxComponents]; CPDF_StreamAcc m_Stream; CFX_BitStream m_BitStream; }; #endif // CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_