core/src/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_SRC_FXGE_SKIA_FX_SKIA_DEVICE_H_
#define CORE_SRC_FXGE_SKIA_FX_SKIA_DEVICE_H_

#if defined(_SKIA_SUPPORT_)
class CFX_SkiaDeviceDriver : public IFX_RenderDeviceDriver
{
public:
	CFX_SkiaDeviceDriver(CFX_DIBitmap* pBitmap, int dither_bits, FX_BOOL bRgbByteOrder, CFX_DIBitmap* pOriDevice, FX_BOOL bGroupKnockout);
	virtual ~CFX_SkiaDeviceDriver();

	/** Options */
	virtual int			GetDeviceCaps(int caps_id);
	
	/** Save and restore all graphic states */
	virtual void		SaveState();
	virtual void		RestoreState(FX_BOOL bKeepSaved);
	
	/** Set clipping path using filled region */
	virtual FX_BOOL		SetClip_PathFill(const CFX_PathData* pPathData,	// path info
							const CFX_AffineMatrix* pObject2Device,	// optional transformation
							int fill_mode	// fill mode, WINDING or ALTERNATE
							);
	
	/** Set clipping path using stroked region */
	virtual FX_BOOL		SetClip_PathStroke(const CFX_PathData* pPathData,	// path info
							const CFX_AffineMatrix* pObject2Device,	// optional transformation
							const CFX_GraphStateData* pGraphState	// graphic state, for pen attributes
							);
	
	/** Draw a path */
	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 = 0, 
						void* pIccTransform = NULL
							);
	
	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 = 0, void* pIccTransform = NULL);
	
	/** Draw a single pixel (device dependant) line */
	virtual FX_BOOL		DrawCosmeticLine(FX_FIXFLOAT x1, FX_FIXFLOAT y1, FX_FIXFLOAT x2, FX_FIXFLOAT y2, FX_DWORD color, 
							int alpha_flag, void* pIccTransform, int blend_type) { return FALSE; }
	
	virtual FX_BOOL		GetClipBox(FX_RECT* pRect);
	
	/** Load device buffer into a DIB */
	virtual FX_BOOL		GetDIBits(CFX_DIBitmap* pBitmap, int left, int top, void* pIccTransform = NULL, FX_BOOL bDEdge = FALSE);

	virtual CFX_DIBitmap*   GetBackDrop() { return m_pAggDriver->GetBackDrop(); }
	
	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);
	
	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);
	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_FIXFLOAT font_size, FX_DWORD color, 
						int alpha_flag = 0, void* pIccTransform = NULL);
	
	virtual FX_BOOL		RenderRasterizer(rasterizer_scanline_aa& rasterizer, FX_DWORD color, FX_BOOL bFullCover, FX_BOOL bGroupKnockout, 
							int alpha_flag, void* pIccTransform);
	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(rasterizer_scanline_aa& rasterizer);
	void				SetClipMask(SkPath& skPath, SkPaint* spaint);
	virtual	FX_LPBYTE	GetBuffer() const {return m_pAggDriver->GetBuffer();}

	CFX_AggDeviceDriver* m_pAggDriver;
};
#endif  // defined(_SKIA_SUPPORT_)

#endif  // CORE_SRC_FXGE_SKIA_FX_SKIA_DEVICE_H_