| /* |
| * Copyright 2011 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #ifndef SkScan_DEFINED |
| #define SkScan_DEFINED |
| |
| #include "SkRect.h" |
| |
| class SkRasterClip; |
| class SkRegion; |
| class SkBlitter; |
| class SkPath; |
| |
| /** Defines a fixed-point rectangle, identical to the integer SkIRect, but its |
| coordinates are treated as SkFixed rather than int32_t. |
| */ |
| typedef SkIRect SkXRect; |
| |
| class SkScan { |
| public: |
| /* |
| * Draws count-1 line segments, one at a time: |
| * line(pts[0], pts[1]) |
| * line(pts[1], pts[2]) |
| * line(......, pts[count - 1]) |
| */ |
| typedef void (*HairRgnProc)(const SkPoint[], int count, const SkRegion*, SkBlitter*); |
| typedef void (*HairRCProc)(const SkPoint[], int count, const SkRasterClip&, SkBlitter*); |
| |
| static void FillPath(const SkPath&, const SkIRect&, SkBlitter*); |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // rasterclip |
| |
| static void FillIRect(const SkIRect&, const SkRasterClip&, SkBlitter*); |
| static void FillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*); |
| static void FillRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
| static void AntiFillRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
| static void AntiFillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*); |
| static void FillPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void AntiFillPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void FrameRect(const SkRect&, const SkPoint& strokeSize, |
| const SkRasterClip&, SkBlitter*); |
| static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize, |
| const SkRasterClip&, SkBlitter*); |
| static void FillTriangle(const SkPoint pts[], const SkRasterClip&, SkBlitter*); |
| static void HairLine(const SkPoint[], int count, const SkRasterClip&, SkBlitter*); |
| static void AntiHairLine(const SkPoint[], int count, const SkRasterClip&, SkBlitter*); |
| static void HairRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
| static void AntiHairRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
| static void HairPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void AntiHairPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void HairSquarePath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void AntiHairSquarePath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void HairRoundPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| static void AntiHairRoundPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
| |
| private: |
| friend class SkAAClip; |
| friend class SkRegion; |
| |
| static void FillIRect(const SkIRect&, const SkRegion* clip, SkBlitter*); |
| static void FillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*); |
| static void FillRect(const SkRect&, const SkRegion* clip, SkBlitter*); |
| static void AntiFillRect(const SkRect&, const SkRegion* clip, SkBlitter*); |
| static void AntiFillXRect(const SkXRect&, const SkRegion*, SkBlitter*); |
| static void FillPath(const SkPath&, const SkRegion& clip, SkBlitter*); |
| static void AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*, |
| bool forceRLE = false); |
| static void FillTriangle(const SkPoint pts[], const SkRegion*, SkBlitter*); |
| |
| static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize, |
| const SkRegion*, SkBlitter*); |
| static void HairLineRgn(const SkPoint[], int count, const SkRegion*, SkBlitter*); |
| static void AntiHairLineRgn(const SkPoint[], int count, const SkRegion*, SkBlitter*); |
| }; |
| |
| /** Assign an SkXRect from a SkIRect, by promoting the src rect's coordinates |
| from int to SkFixed. Does not check for overflow if the src coordinates |
| exceed 32K |
| */ |
| static inline void XRect_set(SkXRect* xr, const SkIRect& src) { |
| xr->fLeft = SkIntToFixed(src.fLeft); |
| xr->fTop = SkIntToFixed(src.fTop); |
| xr->fRight = SkIntToFixed(src.fRight); |
| xr->fBottom = SkIntToFixed(src.fBottom); |
| } |
| |
| /** Assign an SkXRect from a SkRect, by promoting the src rect's coordinates |
| from SkScalar to SkFixed. Does not check for overflow if the src coordinates |
| exceed 32K |
| */ |
| static inline void XRect_set(SkXRect* xr, const SkRect& src) { |
| xr->fLeft = SkScalarToFixed(src.fLeft); |
| xr->fTop = SkScalarToFixed(src.fTop); |
| xr->fRight = SkScalarToFixed(src.fRight); |
| xr->fBottom = SkScalarToFixed(src.fBottom); |
| } |
| |
| /** Round the SkXRect coordinates, and store the result in the SkIRect. |
| */ |
| static inline void XRect_round(const SkXRect& xr, SkIRect* dst) { |
| dst->fLeft = SkFixedRoundToInt(xr.fLeft); |
| dst->fTop = SkFixedRoundToInt(xr.fTop); |
| dst->fRight = SkFixedRoundToInt(xr.fRight); |
| dst->fBottom = SkFixedRoundToInt(xr.fBottom); |
| } |
| |
| /** Round the SkXRect coordinates out (i.e. use floor for left/top, and ceiling |
| for right/bottom), and store the result in the SkIRect. |
| */ |
| static inline void XRect_roundOut(const SkXRect& xr, SkIRect* dst) { |
| dst->fLeft = SkFixedFloorToInt(xr.fLeft); |
| dst->fTop = SkFixedFloorToInt(xr.fTop); |
| dst->fRight = SkFixedCeilToInt(xr.fRight); |
| dst->fBottom = SkFixedCeilToInt(xr.fBottom); |
| } |
| |
| #endif |