support gradients and stroke+fill

core/include/fxge/fx_ge.h

 // Copyright 2014 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_INCLUDE_FXGE_FX_GE_H_
 #define CORE_INCLUDE_FXGE_FX_GE_H_
 
 #include "core/include/fxge/fx_dib.h"
 #include "core/include/fxge/fx_font.h"
 
 class CFX_Font;
 class CFX_FontMgr;
 class CFX_FontCache;
 class CFX_FaceCache;
+class CPDF_ShadingPattern;
 class IFX_RenderDeviceDriver;
 class CCodec_ModuleMgr;
 class SkPictureRecorder;
 
 class CFX_GEModule {
  public:
   static void Create(const char** pUserFontPaths);
 
   static void Use(CFX_GEModule* pMgr);
 
@@ skipping 181 matching lines @@
 #define FXRC_ALPHA_MASK 0x04
 #define FXRC_ALPHA_PATH 0x10
 #define FXRC_ALPHA_IMAGE 0x20
 #define FXRC_ALPHA_OUTPUT 0x40
 #define FXRC_BLEND_MODE 0x80
 #define FXRC_SOFT_CLIP 0x100
 #define FXRC_CMYK_OUTPUT 0x200
 #define FXRC_BITMASK_OUTPUT 0x400
 #define FXRC_BYTEMASK_OUTPUT 0x800
 #define FXRENDER_IMAGE_LOSSY 0x1000
+#define FXRC_FILLSTROKE_PATH 0x2000
+#define FXRC_SHADING 0x4000
 #define FXFILL_ALTERNATE 1
 #define FXFILL_WINDING 2
 #define FXFILL_FULLCOVER 4
 #define FXFILL_RECT_AA 8
 #define FX_FILL_STROKE 16
 #define FX_STROKE_ADJUST 32
 #define FX_STROKE_TEXT_MODE 64
 #define FX_FILL_TEXT_MODE 128
 #define FX_ZEROAREA_FILL 256
 #define FXFILL_NOPATHSMOOTH 512
@@ skipping 162 matching lines @@
                        int nFlag = 0,
                        int alpha_flag = 0,
                        void* pIccTransform = NULL,
                        int blend_type = FXDIB_BLEND_NORMAL);
   virtual void Begin() {}
   virtual void End() {}
 
  private:
   void InitDeviceInfo();
   void UpdateClipBox();
+  FX_BOOL DrawFillStrokePath(const CFX_PathData* pPathData,
+                             const CFX_Matrix* pObject2Device,
+                             const CFX_GraphStateData* pGraphState,
+                             FX_DWORD fill_color,
+                             FX_DWORD stroke_color,
+                             int fill_mode,
+                             int alpha_flag,
+                             void* pIccTransform,
+                             int blend_type);
 
   CFX_DIBitmap* m_pBitmap;
   int m_Width;
   int m_Height;
   int m_bpp;
   int m_RenderCaps;
   int m_DeviceClass;
   FX_RECT m_ClipBox;
   IFX_RenderDeviceDriver* m_pDeviceDriver;
 };
@@ skipping 170 matching lines @@
                                  CFX_Font* pFont,
                                  CFX_FontCache* pCache,
                                  const CFX_Matrix* pObject2Device,
                                  FX_FLOAT font_size,
                                  FX_DWORD color,
                                  int alpha_flag = 0,
                                  void* pIccTransform = NULL) {
     return FALSE;
   }
 
-  virtual void* GetPlatformSurface() { return NULL; }
+  virtual void* GetPlatformSurface() const { return NULL; }
+  virtual int GetDriverType() const { return 0; }
+  virtual void ClearDriver() {}
 
-  virtual int GetDriverType() { return 0; }
-
-  virtual void ClearDriver() {}
+  virtual FX_BOOL DrawShading(CPDF_ShadingPattern* pPattern,
+                              CFX_Matrix* pMatrix,
+                              int alpha,
+                              FX_BOOL bAlphaMode) {
+    return false;
+  }
 };
 
 class IFX_PSOutput {
  public:
   virtual void Release() = 0;
   virtual void OutputPS(const FX_CHAR* str, int len) = 0;
 
  protected:
   virtual ~IFX_PSOutput() {}
 };
@@ skipping 102 matching lines @@
   void FindPSFontGlyph(CFX_FaceCache* pFaceCache,
                        CFX_Font* pFont,
                        const FXTEXT_CHARPOS& charpos,
                        int& ps_fontnum,
                        int& ps_glyphindex);
 
   void WritePSBinary(const uint8_t* data, int len);
 };
 
 #endif  // CORE_INCLUDE_FXGE_FX_GE_H_