Replace agg with skia

core/src/fxge/skia/fx_skia_driver.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 _FX_SKIA_DRIVER_
+#define _FX_SKIA_DRIVER_
+
+#include "fx_skia.h"
+
+class CFX_SkiaDriver : public IFX_RenderDeviceDriver
+{
+public:
+    CFX_SkiaDriver(CFX_DIBitmap* pBitmap, int dither_bits, FX_BOOL bRgbByteOrder, CFX_DIBitmap* pOriDevice, FX_BOOL bGroupKnockout);
+
+    virtual ~CFX_SkiaDriver();
+    
+    void                InitPlatform();
+
+    void                DestroyPlatform();
+
+    virtual int         GetDeviceCaps(int caps_id);
+
+    virtual void        SaveState();
+
+    virtual void        RestoreState(FX_BOOL bKeepSaved);
+
+    virtual FX_BOOL     SetClip_PathFill(const CFX_PathData* pPathData,
+                                         const CFX_AffineMatrix* pObject2Device,
+                                         int fill_mode
+                                     );
+
+    virtual FX_BOOL     SetClip_PathStroke(const CFX_PathData* pPathData,
+                                           const CFX_AffineMatrix* pObject2Device,
+                                           const CFX_GraphStateData* pGraphState
+                                       );
+
+    virtual FX_BOOL     DrawPath(const CFX_PathData* pPathData,
+                                 const CFX_AffineMatrix* pObject2Device,
+                                 const CFX_GraphStateData* pGraphState,
+                                 FX_DWORD fill_color,
+                                 FX_DWORD stroke_color,
+                                 int fill_mode,
+                                 int alpha_flag,
+                                 void* pIccTransform,
+                                 int blend_type
+                             );
+
+    virtual FX_BOOL     SetPixel(int x, int y, FX_DWORD color,
+                                 int alpha_flag = 0, void* pIccTransform = NULL);
+
+    virtual FX_BOOL     FillRect(const FX_RECT* pRect,
+                                 FX_DWORD fill_color, int alpha_flag, void* pIccTransform, int blend_type);
+
+    virtual FX_BOOL     DrawCosmeticLine(FX_FLOAT x1, FX_FLOAT y1, FX_FLOAT x2, FX_FLOAT y2, FX_DWORD color,
+                                         int alpha_flag, void* pIccTransform, int blend_type)
+    {
+        return FALSE;
+    }
+
+    virtual FX_BOOL     GetClipBox(FX_RECT* pRect);
+
+    virtual FX_BOOL     GetDIBits(CFX_DIBitmap* pBitmap, int left, int top, void* pIccTransform = NULL, FX_BOOL bDEdge = FALSE);
+
+    virtual CFX_DIBitmap*   GetBackDrop()
+    {
+        return m_pOriDevice;
+    }
+
+    virtual FX_BOOL     SetDIBits(const CFX_DIBSource* pBitmap, FX_DWORD color, const FX_RECT* pSrcRect,
+                                  int dest_left, int dest_top, int blend_type,
+                                  int alpha_flag = 0, void* pIccTransform = NULL);
+    virtual FX_BOOL     StretchDIBits(const CFX_DIBSource* pBitmap, FX_DWORD color, int dest_left, int dest_top,
+                                      int dest_width, int dest_height, const FX_RECT* pClipRect, FX_DWORD flags,
+                                      int alpha_flag = 0 , void* pIccTransform = NULL, int blend_type = FXDIB_BLEND_NORMAL);
+
+    virtual FX_BOOL     StartDIBits(const CFX_DIBSource* pBitmap, int bitmap_alpha, FX_DWORD color,
+                                    const CFX_AffineMatrix* pMatrix, FX_DWORD flags, FX_LPVOID& handle,
+                                    int alpha_flag = 0, void* pIccTransform = NULL, int blend_type = FXDIB_BLEND_NORMAL);
+
+    virtual FX_BOOL     ContinueDIBits(FX_LPVOID handle, IFX_Pause* pPause);
+
+    virtual void        CancelDIBits(FX_LPVOID handle);
+
+    virtual FX_BOOL     DrawDeviceText(int nChars, const FXTEXT_CHARPOS* pCharPos, CFX_Font* pFont,
+                                       CFX_FontCache* pCache, const CFX_AffineMatrix* pObject2Device, FX_FLOAT font_size, FX_DWORD color,
+                                       int alpha_flag = 0, void* pIccTransform = NULL);
+
+    virtual FX_BOOL     RenderRasterizerSkia(SkPath& skPath, const SkPaint& origPaint, SkIRect& rect, FX_DWORD color, FX_BOOL bFullCover, FX_BOOL bGroupKnockout,
+            int alpha_flag, void* pIccTransform, FX_BOOL bFill = TRUE);
+
+    void                SetClipMask(SkPath& skPath, SkPaint* spaint);
+
+    virtual FX_LPBYTE   GetBuffer() const
+    {
+        return m_pBitmap->GetBuffer();
+    }
+
+private:
+    CFX_DIBitmap*       m_pBitmap;
+    CFX_ClipRgn*        m_pClipRgn;
+    CFX_PtrArray        m_StateStack;
+    void*               m_pPlatformGraphics;
+    void*               m_pPlatformBitmap;
+    void*               m_pDwRenderTartget;
+    int                 m_FillFlags;
+    int                 m_DitherBits;
+    FX_BOOL             m_bRgbByteOrder;
+    CFX_DIBitmap*       m_pOriDevice;
+    FX_BOOL             m_bGroupKnockout;
+};
+
+class SuperBlitter_skia
+{
+public:
+    static void DrawPath(const SkPath& srcPath, SkBlitter* blitter, const SkRasterClip& rect, const SkPaint& origPaint);
+};
+
+class CSkia_PathData : public CFX_Object
+{
+public:
+    CSkia_PathData() {}
+    ~CSkia_PathData() {}
+    SkPath                      m_PathData;
+    void                        BuildPath(const CFX_PathData* pPathData, const CFX_AffineMatrix* pObject2Device);
+};
+
+#endif
+
+FX_BOOL FxSkDrawTreatAsHairline(const SkPaint& paint, SkScalar* coverage);
+
+static void SkRasterizeStroke(SkPaint& spaint, SkPath* dstPathData, SkPath& path_data,
+    const CFX_AffineMatrix* pObject2Device,
+    const CFX_GraphStateData* pGraphState, FX_FLOAT scale = 1.0f,
+    FX_BOOL bStrokeAdjust = FALSE, FX_BOOL bTextMode = FALSE);
+
+void RgbByteOrderSetPixel(CFX_DIBitmap* pBitmap, int x, int y, FX_DWORD argb);
+
+FX_ARGB _DefaultCMYK2ARGB(FX_CMYK cmyk, FX_BYTE alpha);
+
+FX_BOOL _DibSetPixel(CFX_DIBitmap* pDevice, int x, int y, FX_DWORD color, int alpha_flag, void* pIccTransform);
+
+void RgbByteOrderCompositeRect(CFX_DIBitmap* pBitmap, int left, int top, int width, int height, FX_ARGB argb);
+
+void RgbByteOrderTransferBitmap(CFX_DIBitmap* pBitmap, int dest_left, int dest_top, int width, int height,
+    const CFX_DIBSource* pSrcBitmap, int src_left, int src_top);