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      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 XFA_FXGRAPHICS_CXFA_GRAPHICS_H_
      8 #define XFA_FXGRAPHICS_CXFA_GRAPHICS_H_
      9 
     10 #include <memory>
     11 #include <vector>
     12 
     13 #include "core/fxcrt/fx_system.h"
     14 #include "core/fxge/cfx_defaultrenderdevice.h"
     15 #include "core/fxge/cfx_graphstatedata.h"
     16 #include "core/fxge/cfx_renderdevice.h"
     17 #include "core/fxge/fx_dib.h"
     18 #include "xfa/fxgraphics/cxfa_gecolor.h"
     19 
     20 class CXFA_GEPath;
     21 
     22 using FX_FillMode = int32_t;
     23 
     24 enum class FX_HatchStyle {
     25   Horizontal = 0,
     26   Vertical = 1,
     27   ForwardDiagonal = 2,
     28   BackwardDiagonal = 3,
     29   Cross = 4,
     30   DiagonalCross = 5
     31 };
     32 
     33 class CFX_RenderDevice;
     34 
     35 class CXFA_Graphics {
     36  public:
     37   explicit CXFA_Graphics(CFX_RenderDevice* renderDevice);
     38   ~CXFA_Graphics();
     39 
     40   void SaveGraphState();
     41   void RestoreGraphState();
     42 
     43   CFX_RectF GetClipRect() const;
     44   const CFX_Matrix* GetMatrix() const;
     45   CFX_RenderDevice* GetRenderDevice();
     46 
     47   void SetLineCap(CFX_GraphStateData::LineCap lineCap);
     48   void SetLineDash(float dashPhase, float* dashArray, int32_t dashCount);
     49   void SetSolidLineDash();
     50   void SetLineWidth(float lineWidth);
     51   void EnableActOnDash();
     52   void SetStrokeColor(const CXFA_GEColor& color);
     53   void SetFillColor(const CXFA_GEColor& color);
     54   void SetClipRect(const CFX_RectF& rect);
     55   void StrokePath(CXFA_GEPath* path, const CFX_Matrix* matrix);
     56   void FillPath(CXFA_GEPath* path,
     57                 FX_FillMode fillMode,
     58                 const CFX_Matrix* matrix);
     59   void ConcatMatrix(const CFX_Matrix* matrix);
     60 
     61  protected:
     62   int32_t m_type;
     63 
     64  private:
     65   struct TInfo {
     66     TInfo();
     67     explicit TInfo(const TInfo& info);
     68     TInfo& operator=(const TInfo& other);
     69 
     70     CFX_GraphStateData graphState;
     71     CFX_Matrix CTM;
     72     bool isActOnDash;
     73     CXFA_GEColor strokeColor;
     74     CXFA_GEColor fillColor;
     75   } m_info;
     76 
     77   void RenderDeviceStrokePath(const CXFA_GEPath* path,
     78                               const CFX_Matrix* matrix);
     79   void RenderDeviceFillPath(const CXFA_GEPath* path,
     80                             FX_FillMode fillMode,
     81                             const CFX_Matrix* matrix);
     82 
     83   void FillPathWithPattern(const CXFA_GEPath* path,
     84                            FX_FillMode fillMode,
     85                            const CFX_Matrix& matrix);
     86   void FillPathWithShading(const CXFA_GEPath* path,
     87                            FX_FillMode fillMode,
     88                            const CFX_Matrix& matrix);
     89 
     90   void SetDIBitsWithMatrix(const RetainPtr<CFX_DIBSource>& source,
     91                            const CFX_Matrix& matrix);
     92 
     93   CFX_RenderDevice* const m_renderDevice;  // Not owned.
     94   std::vector<std::unique_ptr<TInfo>> m_infoStack;
     95 };
     96 
     97 #endif  // XFA_FXGRAPHICS_CXFA_GRAPHICS_H_
     98