1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkScan.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,116 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2011 The Android Open Source Project
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +#ifndef SkScan_DEFINED
1.14 +#define SkScan_DEFINED
1.15 +
1.16 +#include "SkRect.h"
1.17 +
1.18 +class SkRasterClip;
1.19 +class SkRegion;
1.20 +class SkBlitter;
1.21 +class SkPath;
1.22 +
1.23 +/** Defines a fixed-point rectangle, identical to the integer SkIRect, but its
1.24 + coordinates are treated as SkFixed rather than int32_t.
1.25 +*/
1.26 +typedef SkIRect SkXRect;
1.27 +
1.28 +class SkScan {
1.29 +public:
1.30 + static void FillPath(const SkPath&, const SkIRect&, SkBlitter*);
1.31 +
1.32 + ///////////////////////////////////////////////////////////////////////////
1.33 + // rasterclip
1.34 +
1.35 + static void FillIRect(const SkIRect&, const SkRasterClip&, SkBlitter*);
1.36 + static void FillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*);
1.37 + static void FillRect(const SkRect&, const SkRasterClip&, SkBlitter*);
1.38 + static void AntiFillRect(const SkRect&, const SkRasterClip&, SkBlitter*);
1.39 + static void AntiFillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*);
1.40 + static void FillPath(const SkPath&, const SkRasterClip&, SkBlitter*);
1.41 + static void AntiFillPath(const SkPath&, const SkRasterClip&, SkBlitter*);
1.42 + static void FrameRect(const SkRect&, const SkPoint& strokeSize,
1.43 + const SkRasterClip&, SkBlitter*);
1.44 + static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize,
1.45 + const SkRasterClip&, SkBlitter*);
1.46 + static void FillTriangle(const SkPoint pts[], const SkRasterClip&, SkBlitter*);
1.47 + static void HairLine(const SkPoint&, const SkPoint&, const SkRasterClip&,
1.48 + SkBlitter*);
1.49 + static void AntiHairLine(const SkPoint&, const SkPoint&, const SkRasterClip&,
1.50 + SkBlitter*);
1.51 + static void HairRect(const SkRect&, const SkRasterClip&, SkBlitter*);
1.52 + static void AntiHairRect(const SkRect&, const SkRasterClip&, SkBlitter*);
1.53 + static void HairPath(const SkPath&, const SkRasterClip&, SkBlitter*);
1.54 + static void AntiHairPath(const SkPath&, const SkRasterClip&, SkBlitter*);
1.55 +
1.56 +private:
1.57 + friend class SkAAClip;
1.58 + friend class SkRegion;
1.59 +
1.60 + static void FillIRect(const SkIRect&, const SkRegion* clip, SkBlitter*);
1.61 + static void FillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*);
1.62 + static void FillRect(const SkRect&, const SkRegion* clip, SkBlitter*);
1.63 + static void AntiFillRect(const SkRect&, const SkRegion* clip, SkBlitter*);
1.64 + static void AntiFillXRect(const SkXRect&, const SkRegion*, SkBlitter*);
1.65 + static void FillPath(const SkPath&, const SkRegion& clip, SkBlitter*);
1.66 + static void AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*,
1.67 + bool forceRLE = false);
1.68 + static void FillTriangle(const SkPoint pts[], const SkRegion*, SkBlitter*);
1.69 +
1.70 + static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize,
1.71 + const SkRegion*, SkBlitter*);
1.72 + static void HairLineRgn(const SkPoint&, const SkPoint&, const SkRegion*,
1.73 + SkBlitter*);
1.74 + static void AntiHairLineRgn(const SkPoint&, const SkPoint&, const SkRegion*,
1.75 + SkBlitter*);
1.76 +};
1.77 +
1.78 +/** Assign an SkXRect from a SkIRect, by promoting the src rect's coordinates
1.79 + from int to SkFixed. Does not check for overflow if the src coordinates
1.80 + exceed 32K
1.81 +*/
1.82 +static inline void XRect_set(SkXRect* xr, const SkIRect& src) {
1.83 + xr->fLeft = SkIntToFixed(src.fLeft);
1.84 + xr->fTop = SkIntToFixed(src.fTop);
1.85 + xr->fRight = SkIntToFixed(src.fRight);
1.86 + xr->fBottom = SkIntToFixed(src.fBottom);
1.87 +}
1.88 +
1.89 +/** Assign an SkXRect from a SkRect, by promoting the src rect's coordinates
1.90 + from SkScalar to SkFixed. Does not check for overflow if the src coordinates
1.91 + exceed 32K
1.92 +*/
1.93 +static inline void XRect_set(SkXRect* xr, const SkRect& src) {
1.94 + xr->fLeft = SkScalarToFixed(src.fLeft);
1.95 + xr->fTop = SkScalarToFixed(src.fTop);
1.96 + xr->fRight = SkScalarToFixed(src.fRight);
1.97 + xr->fBottom = SkScalarToFixed(src.fBottom);
1.98 +}
1.99 +
1.100 +/** Round the SkXRect coordinates, and store the result in the SkIRect.
1.101 +*/
1.102 +static inline void XRect_round(const SkXRect& xr, SkIRect* dst) {
1.103 + dst->fLeft = SkFixedRoundToInt(xr.fLeft);
1.104 + dst->fTop = SkFixedRoundToInt(xr.fTop);
1.105 + dst->fRight = SkFixedRoundToInt(xr.fRight);
1.106 + dst->fBottom = SkFixedRoundToInt(xr.fBottom);
1.107 +}
1.108 +
1.109 +/** Round the SkXRect coordinates out (i.e. use floor for left/top, and ceiling
1.110 + for right/bottom), and store the result in the SkIRect.
1.111 +*/
1.112 +static inline void XRect_roundOut(const SkXRect& xr, SkIRect* dst) {
1.113 + dst->fLeft = SkFixedFloorToInt(xr.fLeft);
1.114 + dst->fTop = SkFixedFloorToInt(xr.fTop);
1.115 + dst->fRight = SkFixedCeilToInt(xr.fRight);
1.116 + dst->fBottom = SkFixedCeilToInt(xr.fBottom);
1.117 +}
1.118 +
1.119 +#endif
