| // 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/fxcrt/cfx_bitstream.h" |
| #include "core/fxcrt/fx_system.h" |
| #include "core/fxcrt/retain_ptr.h" |
| |
| class CPDF_StreamAcc; |
| |
| class CPDF_MeshVertex { |
| public: |
| CPDF_MeshVertex(); |
| CPDF_MeshVertex(const CPDF_MeshVertex&); |
| ~CPDF_MeshVertex(); |
| |
| CFX_PointF position; |
| float r = 0.0f; |
| float g = 0.0f; |
| float b = 0.0f; |
| }; |
| |
| 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, |
| const CPDF_Stream* pShadingStream, |
| const RetainPtr<CPDF_ColorSpace>& pCS); |
| ~CPDF_MeshStream(); |
| |
| bool Load(); |
| |
| bool CanReadFlag() const; |
| bool CanReadCoords() const; |
| bool CanReadColor() const; |
| |
| uint32_t ReadFlag(); |
| CFX_PointF ReadCoords(); |
| std::tuple<float, float, float> ReadColor(); |
| |
| bool ReadVertex(const CFX_Matrix& pObject2Bitmap, |
| CPDF_MeshVertex* vertex, |
| uint32_t* flag); |
| std::vector<CPDF_MeshVertex> ReadVertexRow(const CFX_Matrix& pObject2Bitmap, |
| int count); |
| |
| CFX_BitStream* BitStream() { return m_BitStream.get(); } |
| uint32_t ComponentBits() const { return m_nComponentBits; } |
| uint32_t Components() const { return m_nComponents; } |
| |
| private: |
| static constexpr uint32_t kMaxComponents = 8; |
| |
| const ShadingType m_type; |
| const std::vector<std::unique_ptr<CPDF_Function>>& m_funcs; |
| RetainPtr<const CPDF_Stream> const m_pShadingStream; |
| RetainPtr<CPDF_ColorSpace> const m_pCS; |
| uint32_t m_nCoordBits = 0; |
| uint32_t m_nComponentBits = 0; |
| uint32_t m_nFlagBits = 0; |
| uint32_t m_nComponents = 0; |
| uint32_t m_CoordMax = 0; |
| uint32_t m_ComponentMax = 0; |
| float m_xmin = 0.0f; |
| float m_xmax = 0.0f; |
| float m_ymin = 0.0f; |
| float m_ymax = 0.0f; |
| RetainPtr<CPDF_StreamAcc> m_pStream; |
| std::unique_ptr<CFX_BitStream> m_BitStream; |
| float m_ColorMin[kMaxComponents] = {}; |
| float m_ColorMax[kMaxComponents] = {}; |
| }; |
| |
| #endif // CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_ |