michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: 
michael@0: #ifndef SkScan_DEFINED
michael@0: #define SkScan_DEFINED
michael@0: 
michael@0: #include "SkRect.h"
michael@0: 
michael@0: class SkRasterClip;
michael@0: class SkRegion;
michael@0: class SkBlitter;
michael@0: class SkPath;
michael@0: 
michael@0: /** Defines a fixed-point rectangle, identical to the integer SkIRect, but its
michael@0:     coordinates are treated as SkFixed rather than int32_t.
michael@0: */
michael@0: typedef SkIRect SkXRect;
michael@0: 
michael@0: class SkScan {
michael@0: public:
michael@0:     static void FillPath(const SkPath&, const SkIRect&, SkBlitter*);
michael@0: 
michael@0:     ///////////////////////////////////////////////////////////////////////////
michael@0:     // rasterclip
michael@0: 
michael@0:     static void FillIRect(const SkIRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void FillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void FillRect(const SkRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void AntiFillRect(const SkRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void AntiFillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void FillPath(const SkPath&, const SkRasterClip&, SkBlitter*);
michael@0:     static void AntiFillPath(const SkPath&, const SkRasterClip&, SkBlitter*);
michael@0:     static void FrameRect(const SkRect&, const SkPoint& strokeSize,
michael@0:                           const SkRasterClip&, SkBlitter*);
michael@0:     static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize,
michael@0:                               const SkRasterClip&, SkBlitter*);
michael@0:     static void FillTriangle(const SkPoint pts[], const SkRasterClip&, SkBlitter*);
michael@0:     static void HairLine(const SkPoint&, const SkPoint&, const SkRasterClip&,
michael@0:                          SkBlitter*);
michael@0:     static void AntiHairLine(const SkPoint&, const SkPoint&, const SkRasterClip&,
michael@0:                              SkBlitter*);
michael@0:     static void HairRect(const SkRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void AntiHairRect(const SkRect&, const SkRasterClip&, SkBlitter*);
michael@0:     static void HairPath(const SkPath&, const SkRasterClip&, SkBlitter*);
michael@0:     static void AntiHairPath(const SkPath&, const SkRasterClip&, SkBlitter*);
michael@0: 
michael@0: private:
michael@0:     friend class SkAAClip;
michael@0:     friend class SkRegion;
michael@0: 
michael@0:     static void FillIRect(const SkIRect&, const SkRegion* clip, SkBlitter*);
michael@0:     static void FillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*);
michael@0:     static void FillRect(const SkRect&, const SkRegion* clip, SkBlitter*);
michael@0:     static void AntiFillRect(const SkRect&, const SkRegion* clip, SkBlitter*);
michael@0:     static void AntiFillXRect(const SkXRect&, const SkRegion*, SkBlitter*);
michael@0:     static void FillPath(const SkPath&, const SkRegion& clip, SkBlitter*);
michael@0:     static void AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*,
michael@0:                              bool forceRLE = false);
michael@0:     static void FillTriangle(const SkPoint pts[], const SkRegion*, SkBlitter*);
michael@0: 
michael@0:     static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize,
michael@0:                               const SkRegion*, SkBlitter*);
michael@0:     static void HairLineRgn(const SkPoint&, const SkPoint&, const SkRegion*,
michael@0:                          SkBlitter*);
michael@0:     static void AntiHairLineRgn(const SkPoint&, const SkPoint&, const SkRegion*,
michael@0:                              SkBlitter*);
michael@0: };
michael@0: 
michael@0: /** Assign an SkXRect from a SkIRect, by promoting the src rect's coordinates
michael@0:     from int to SkFixed. Does not check for overflow if the src coordinates
michael@0:     exceed 32K
michael@0: */
michael@0: static inline void XRect_set(SkXRect* xr, const SkIRect& src) {
michael@0:     xr->fLeft = SkIntToFixed(src.fLeft);
michael@0:     xr->fTop = SkIntToFixed(src.fTop);
michael@0:     xr->fRight = SkIntToFixed(src.fRight);
michael@0:     xr->fBottom = SkIntToFixed(src.fBottom);
michael@0: }
michael@0: 
michael@0: /** Assign an SkXRect from a SkRect, by promoting the src rect's coordinates
michael@0:     from SkScalar to SkFixed. Does not check for overflow if the src coordinates
michael@0:     exceed 32K
michael@0: */
michael@0: static inline void XRect_set(SkXRect* xr, const SkRect& src) {
michael@0:     xr->fLeft = SkScalarToFixed(src.fLeft);
michael@0:     xr->fTop = SkScalarToFixed(src.fTop);
michael@0:     xr->fRight = SkScalarToFixed(src.fRight);
michael@0:     xr->fBottom = SkScalarToFixed(src.fBottom);
michael@0: }
michael@0: 
michael@0: /** Round the SkXRect coordinates, and store the result in the SkIRect.
michael@0: */
michael@0: static inline void XRect_round(const SkXRect& xr, SkIRect* dst) {
michael@0:     dst->fLeft = SkFixedRoundToInt(xr.fLeft);
michael@0:     dst->fTop = SkFixedRoundToInt(xr.fTop);
michael@0:     dst->fRight = SkFixedRoundToInt(xr.fRight);
michael@0:     dst->fBottom = SkFixedRoundToInt(xr.fBottom);
michael@0: }
michael@0: 
michael@0: /** Round the SkXRect coordinates out (i.e. use floor for left/top, and ceiling
michael@0:     for right/bottom), and store the result in the SkIRect.
michael@0: */
michael@0: static inline void XRect_roundOut(const SkXRect& xr, SkIRect* dst) {
michael@0:     dst->fLeft = SkFixedFloorToInt(xr.fLeft);
michael@0:     dst->fTop = SkFixedFloorToInt(xr.fTop);
michael@0:     dst->fRight = SkFixedCeilToInt(xr.fRight);
michael@0:     dst->fBottom = SkFixedCeilToInt(xr.fBottom);
michael@0: }
michael@0: 
michael@0: #endif