Create a subset of skia support for paths only

core/fxge/skia/fx_skia_device.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.
 
 #ifndef CORE_FXGE_SKIA_FX_SKIA_DEVICE_H_
 #define CORE_FXGE_SKIA_FX_SKIA_DEVICE_H_
 
-#if defined(_SKIA_SUPPORT_)
+#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
 
 #include "core/fxge/cfx_pathdata.h"
 #include "core/fxge/ifx_renderdevicedriver.h"
 
 class SkCanvas;
 class SkMatrix;
 class SkPaint;
 class SkPath;
 class SkPictureRecorder;
 class SkiaState;
 struct FXTEXT_CHARPOS;
 struct SkIRect;
 
 class CFX_SkiaDeviceDriver : public IFX_RenderDeviceDriver {
  public:
   CFX_SkiaDeviceDriver(CFX_DIBitmap* pBitmap,
                        bool bRgbByteOrder,
                        CFX_DIBitmap* pOriDevice,
                        bool bGroupKnockout);
+#ifdef _SKIA_SUPPORT_
   explicit CFX_SkiaDeviceDriver(SkPictureRecorder* recorder);
   CFX_SkiaDeviceDriver(int size_x, int size_y);
+#endif
   ~CFX_SkiaDeviceDriver() override;
 
   /** Options */
   int GetDeviceCaps(int caps_id) const override;
 
   /** Save and restore all graphic states */
   void SaveState() override;
   void RestoreState(bool bKeepSaved) override;
 
   /** Set clipping path using filled region */
@@ skipping 37 matching lines @@
   bool GetDIBits(CFX_DIBitmap* pBitmap, int left, int top) override;
 
   CFX_DIBitmap* GetBackDrop() override;
 
   bool SetDIBits(const CFX_DIBSource* pBitmap,
                  uint32_t color,
                  const FX_RECT* pSrcRect,
                  int dest_left,
                  int dest_top,
                  int blend_type) override;
+#ifdef _SKIA_SUPPORT_
   bool SetBitsWithMask(const CFX_DIBSource* pBitmap,
                        const CFX_DIBSource* pMask,
                        int dest_left,
                        int dest_top,
                        int bitmap_alpha,
                        int blend_type) override;
+#else
+  void SetClipMask(const FX_RECT& clipBox, const SkPath& skClipPath);
+#endif
+
   bool StretchDIBits(const CFX_DIBSource* pBitmap,
                      uint32_t color,
                      int dest_left,
                      int dest_top,
                      int dest_width,
                      int dest_height,
                      const FX_RECT* pClipRect,
                      uint32_t flags,
                      int blend_type) override;
 
@@ skipping 15 matching lines @@
                         const CFX_Matrix* pMatrix,
                         int blend_type);
 
   bool DrawDeviceText(int nChars,
                       const FXTEXT_CHARPOS* pCharPos,
                       CFX_Font* pFont,
                       const CFX_Matrix* pObject2Device,
                       FX_FLOAT font_size,
                       uint32_t color) override;
 
+#ifdef _SKIA_SUPPORT_
   bool DrawShading(const CPDF_ShadingPattern* pPattern,
                    const CFX_Matrix* pMatrix,
                    const FX_RECT& clip_rect,
                    int alpha,
                    bool bAlphaMode) override;
+#endif
 
   virtual uint8_t* GetBuffer() const;
 
   void PaintStroke(SkPaint* spaint,
                    const CFX_GraphStateData* pGraphState,
                    const SkMatrix& matrix);
   void Clear(uint32_t color);
   void Flush();
   SkPictureRecorder* GetRecorder() const { return m_pRecorder; }
   static void PreMultiply(CFX_DIBitmap* pDIBitmap);
   SkCanvas* SkiaCanvas() { return m_pCanvas; }
   void DebugVerifyBitmapIsPreMultiplied() const;
   void Dump() const;
 
  private:
   friend class SkiaState;
 
   CFX_DIBitmap* m_pBitmap;
   CFX_DIBitmap* m_pOriDevice;
   SkCanvas* m_pCanvas;
   SkPictureRecorder* const m_pRecorder;
   std::unique_ptr<SkiaState> m_pCache;
+#ifndef _SKIA_SUPPORT_
+  std::unique_ptr<CFX_ClipRgn> m_pClipRgn;
+  std::vector<std::unique_ptr<CFX_ClipRgn>> m_StateStack;
+  int m_FillFlags;
+  bool m_bRgbByteOrder;
+#endif
   bool m_bGroupKnockout;
 };
 #endif  // defined(_SKIA_SUPPORT_)
 
 #endif  // CORE_FXGE_SKIA_FX_SKIA_DEVICE_H_