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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 CORE_FPDFAPI_RENDER_CPDF_IMAGERENDERER_H_
      8 #define CORE_FPDFAPI_RENDER_CPDF_IMAGERENDERER_H_
      9 
     10 #include <memory>
     11 
     12 #include "core/fpdfapi/render/cpdf_imageloader.h"
     13 #include "core/fxcrt/fx_coordinates.h"
     14 #include "core/fxcrt/unowned_ptr.h"
     15 #include "core/fxge/dib/cfx_imagerenderer.h"
     16 
     17 class CFX_DIBitmap;
     18 class CFX_DIBSource;
     19 class CFX_DefaultRenderDevice;
     20 class CFX_ImageTransformer;
     21 class CPDF_ImageObject;
     22 class CPDF_PageObject;
     23 class CPDF_Pattern;
     24 class CPDF_RenderStatus;
     25 
     26 class CPDF_ImageRenderer {
     27  public:
     28   CPDF_ImageRenderer();
     29   ~CPDF_ImageRenderer();
     30 
     31   bool Start(CPDF_RenderStatus* pStatus,
     32              CPDF_ImageObject* pImageObject,
     33              const CFX_Matrix* pObj2Device,
     34              bool bStdCS,
     35              int blendType);
     36 
     37   bool Start(CPDF_RenderStatus* pStatus,
     38              const RetainPtr<CFX_DIBSource>& pDIBSource,
     39              FX_ARGB bitmap_argb,
     40              int bitmap_alpha,
     41              const CFX_Matrix* pImage2Device,
     42              uint32_t flags,
     43              bool bStdCS,
     44              int blendType);
     45 
     46   bool Continue(IFX_PauseIndicator* pPause);
     47   bool GetResult() const { return m_Result; }
     48 
     49  private:
     50   bool StartBitmapAlpha();
     51   bool StartDIBSource();
     52   bool StartRenderDIBSource();
     53   bool StartLoadDIBSource();
     54   bool DrawMaskedImage();
     55   bool DrawPatternImage(const CFX_Matrix* pObj2Device);
     56   bool NotDrawing() const;
     57   FX_RECT GetDrawRect() const;
     58   CFX_Matrix GetDrawMatrix(const FX_RECT& rect) const;
     59   void CalculateDrawImage(CFX_DefaultRenderDevice* bitmap_device1,
     60                           CFX_DefaultRenderDevice* bitmap_device2,
     61                           const RetainPtr<CFX_DIBSource>& pDIBSource,
     62                           CFX_Matrix* pNewMatrix,
     63                           const FX_RECT& rect) const;
     64   void HandleFilters();
     65 
     66   UnownedPtr<CPDF_RenderStatus> m_pRenderStatus;
     67   UnownedPtr<CPDF_ImageObject> m_pImageObject;
     68   int m_Status;
     69   UnownedPtr<const CFX_Matrix> m_pObj2Device;
     70   CFX_Matrix m_ImageMatrix;
     71   CPDF_ImageLoader m_Loader;
     72   RetainPtr<CFX_DIBSource> m_pDIBSource;
     73   int m_BitmapAlpha;
     74   bool m_bPatternColor;
     75   UnownedPtr<CPDF_Pattern> m_pPattern;
     76   FX_ARGB m_FillArgb;
     77   uint32_t m_Flags;
     78   std::unique_ptr<CFX_ImageTransformer> m_pTransformer;
     79   std::unique_ptr<CFX_ImageRenderer> m_DeviceHandle;
     80   bool m_bStdCS;
     81   int m_BlendType;
     82   bool m_Result;
     83 };
     84 
     85 #endif  // CORE_FPDFAPI_RENDER_CPDF_IMAGERENDERER_H_
     86