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// 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_
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