1 // Copyright 2016 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_ 8 #define CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_ 9 10 #include <memory> 11 #include <tuple> 12 #include <vector> 13 14 #include "core/fpdfapi/page/cpdf_shadingpattern.h" 15 #include "core/fpdfapi/parser/cpdf_stream_acc.h" 16 #include "core/fxcrt/cfx_bitstream.h" 17 #include "core/fxcrt/fx_system.h" 18 19 class CPDF_MeshVertex { 20 public: 21 CPDF_MeshVertex(); 22 CPDF_MeshVertex(const CPDF_MeshVertex&); 23 ~CPDF_MeshVertex(); 24 25 CFX_PointF position; 26 float r; 27 float g; 28 float b; 29 }; 30 31 class CFX_Matrix; 32 class CPDF_ColorSpace; 33 class CPDF_Function; 34 class CPDF_Stream; 35 36 class CPDF_MeshStream { 37 public: 38 CPDF_MeshStream(ShadingType type, 39 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 40 CPDF_Stream* pShadingStream, 41 CPDF_ColorSpace* pCS); 42 ~CPDF_MeshStream(); 43 44 bool Load(); 45 46 bool CanReadFlag() const; 47 bool CanReadCoords() const; 48 bool CanReadColor() const; 49 50 uint32_t ReadFlag(); 51 CFX_PointF ReadCoords(); 52 std::tuple<float, float, float> ReadColor(); 53 54 bool ReadVertex(const CFX_Matrix& pObject2Bitmap, 55 CPDF_MeshVertex* vertex, 56 uint32_t* flag); 57 std::vector<CPDF_MeshVertex> ReadVertexRow(const CFX_Matrix& pObject2Bitmap, 58 int count); 59 60 CFX_BitStream* BitStream() { return m_BitStream.get(); } 61 uint32_t ComponentBits() const { return m_nComponentBits; } 62 uint32_t Components() const { return m_nComponents; } 63 64 private: 65 static const uint32_t kMaxComponents = 8; 66 67 const ShadingType m_type; 68 const std::vector<std::unique_ptr<CPDF_Function>>& m_funcs; 69 UnownedPtr<CPDF_Stream> const m_pShadingStream; 70 UnownedPtr<CPDF_ColorSpace> const m_pCS; 71 uint32_t m_nCoordBits; 72 uint32_t m_nComponentBits; 73 uint32_t m_nFlagBits; 74 uint32_t m_nComponents; 75 uint32_t m_CoordMax; 76 uint32_t m_ComponentMax; 77 float m_xmin; 78 float m_xmax; 79 float m_ymin; 80 float m_ymax; 81 float m_ColorMin[kMaxComponents]; 82 float m_ColorMax[kMaxComponents]; 83 RetainPtr<CPDF_StreamAcc> m_pStream; 84 std::unique_ptr<CFX_BitStream> m_BitStream; 85 }; 86 87 #endif // CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_ 88
