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- /*
- * 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 "include/core/SkRect.h"
- #include "include/private/SkFixed.h"
- #include <atomic>
- 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;
- extern std::atomic<bool> gSkUseAnalyticAA;
- extern std::atomic<bool> gSkForceAnalyticAA;
- class AdditiveBlitter;
- 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*);
- // Needed by do_fill_path in SkScanPriv.h
- static void FillPath(const SkPath&, const SkRegion& clip, 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 AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*, bool forceRLE);
- 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*);
- static void AAAFillPath(const SkPath& path, SkBlitter* blitter, const SkIRect& pathIR,
- const SkIRect& clipBounds, bool forceRLE);
- static void SAAFillPath(const SkPath& path, SkBlitter* blitter, const SkIRect& pathIR,
- const SkIRect& clipBounds, bool forceRLE);
- };
- /** 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
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