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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 The Android Open Source Project | 3 * Copyright 2011 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkScan_DEFINED | 10 #ifndef SkScan_DEFINED |
11 #define SkScan_DEFINED | 11 #define SkScan_DEFINED |
12 | 12 |
13 #include "SkRect.h" | 13 #include "SkRect.h" |
14 | 14 |
15 class SkRasterClip; | 15 class SkRasterClip; |
16 class SkRegion; | 16 class SkRegion; |
17 class SkBlitter; | 17 class SkBlitter; |
18 class SkPath; | 18 class SkPath; |
19 | 19 |
20 /** Defines a fixed-point rectangle, identical to the integer SkIRect, but its | 20 /** Defines a fixed-point rectangle, identical to the integer SkIRect, but its |
21 coordinates are treated as SkFixed rather than int32_t. | 21 coordinates are treated as SkFixed rather than int32_t. |
22 */ | 22 */ |
23 typedef SkIRect SkXRect; | 23 typedef SkIRect SkXRect; |
24 | 24 |
25 class SkScan { | 25 class SkScan { |
26 public: | 26 public: |
| 27 /* |
| 28 * Draws count-1 line segments, one at a time: |
| 29 * line(pts[0], pts[1]) |
| 30 * line(pts[1], pts[2]) |
| 31 * line(......, pts[count - 1]) |
| 32 */ |
| 33 typedef void (*HairRgnProc)(const SkPoint[], int count, const SkRegion*, SkB
litter*); |
| 34 typedef void (*HairRCProc)(const SkPoint[], int count, const SkRasterClip&,
SkBlitter*); |
| 35 |
27 static void FillPath(const SkPath&, const SkIRect&, SkBlitter*); | 36 static void FillPath(const SkPath&, const SkIRect&, SkBlitter*); |
28 | 37 |
29 /////////////////////////////////////////////////////////////////////////// | 38 /////////////////////////////////////////////////////////////////////////// |
30 // rasterclip | 39 // rasterclip |
31 | 40 |
32 static void FillIRect(const SkIRect&, const SkRasterClip&, SkBlitter*); | 41 static void FillIRect(const SkIRect&, const SkRasterClip&, SkBlitter*); |
33 static void FillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*); | 42 static void FillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*); |
34 static void FillRect(const SkRect&, const SkRasterClip&, SkBlitter*); | 43 static void FillRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
35 static void AntiFillRect(const SkRect&, const SkRasterClip&, SkBlitter*); | 44 static void AntiFillRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
36 static void AntiFillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*); | 45 static void AntiFillXRect(const SkXRect&, const SkRasterClip&, SkBlitter*); |
37 static void FillPath(const SkPath&, const SkRasterClip&, SkBlitter*); | 46 static void FillPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
38 static void AntiFillPath(const SkPath&, const SkRasterClip&, SkBlitter*); | 47 static void AntiFillPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
39 static void FrameRect(const SkRect&, const SkPoint& strokeSize, | 48 static void FrameRect(const SkRect&, const SkPoint& strokeSize, |
40 const SkRasterClip&, SkBlitter*); | 49 const SkRasterClip&, SkBlitter*); |
41 static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize, | 50 static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize, |
42 const SkRasterClip&, SkBlitter*); | 51 const SkRasterClip&, SkBlitter*); |
43 static void FillTriangle(const SkPoint pts[], const SkRasterClip&, SkBlitter
*); | 52 static void FillTriangle(const SkPoint pts[], const SkRasterClip&, SkBlitter
*); |
44 static void HairLine(SkPoint, SkPoint, const SkRasterClip&, SkBlitter*); | 53 static void HairLine(const SkPoint[], int count, const SkRasterClip&, SkBlit
ter*); |
45 static void AntiHairLine(SkPoint, SkPoint, const SkRasterClip&, SkBlitter*); | 54 static void AntiHairLine(const SkPoint[], int count, const SkRasterClip&, Sk
Blitter*); |
46 static void HairRect(const SkRect&, const SkRasterClip&, SkBlitter*); | 55 static void HairRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
47 static void AntiHairRect(const SkRect&, const SkRasterClip&, SkBlitter*); | 56 static void AntiHairRect(const SkRect&, const SkRasterClip&, SkBlitter*); |
48 static void HairPath(const SkPath&, const SkRasterClip&, SkBlitter*); | 57 static void HairPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
49 static void AntiHairPath(const SkPath&, const SkRasterClip&, SkBlitter*); | 58 static void AntiHairPath(const SkPath&, const SkRasterClip&, SkBlitter*); |
50 | 59 |
51 private: | 60 private: |
52 friend class SkAAClip; | 61 friend class SkAAClip; |
53 friend class SkRegion; | 62 friend class SkRegion; |
54 | 63 |
55 static void FillIRect(const SkIRect&, const SkRegion* clip, SkBlitter*); | 64 static void FillIRect(const SkIRect&, const SkRegion* clip, SkBlitter*); |
56 static void FillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*); | 65 static void FillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*); |
57 static void FillRect(const SkRect&, const SkRegion* clip, SkBlitter*); | 66 static void FillRect(const SkRect&, const SkRegion* clip, SkBlitter*); |
58 static void AntiFillRect(const SkRect&, const SkRegion* clip, SkBlitter*); | 67 static void AntiFillRect(const SkRect&, const SkRegion* clip, SkBlitter*); |
59 static void AntiFillXRect(const SkXRect&, const SkRegion*, SkBlitter*); | 68 static void AntiFillXRect(const SkXRect&, const SkRegion*, SkBlitter*); |
60 static void FillPath(const SkPath&, const SkRegion& clip, SkBlitter*); | 69 static void FillPath(const SkPath&, const SkRegion& clip, SkBlitter*); |
61 static void AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*, | 70 static void AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*, |
62 bool forceRLE = false); | 71 bool forceRLE = false); |
63 static void FillTriangle(const SkPoint pts[], const SkRegion*, SkBlitter*); | 72 static void FillTriangle(const SkPoint pts[], const SkRegion*, SkBlitter*); |
64 | 73 |
65 static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize, | 74 static void AntiFrameRect(const SkRect&, const SkPoint& strokeSize, |
66 const SkRegion*, SkBlitter*); | 75 const SkRegion*, SkBlitter*); |
67 static void HairLineRgn(SkPoint, SkPoint, const SkRegion*, SkBlitter*); | 76 static void HairLineRgn(const SkPoint[], int count, const SkRegion*, SkBlitt
er*); |
68 static void AntiHairLineRgn(SkPoint, SkPoint, const SkRegion*, SkBlitter*); | 77 static void AntiHairLineRgn(const SkPoint[], int count, const SkRegion*, SkB
litter*); |
69 }; | 78 }; |
70 | 79 |
71 /** Assign an SkXRect from a SkIRect, by promoting the src rect's coordinates | 80 /** Assign an SkXRect from a SkIRect, by promoting the src rect's coordinates |
72 from int to SkFixed. Does not check for overflow if the src coordinates | 81 from int to SkFixed. Does not check for overflow if the src coordinates |
73 exceed 32K | 82 exceed 32K |
74 */ | 83 */ |
75 static inline void XRect_set(SkXRect* xr, const SkIRect& src) { | 84 static inline void XRect_set(SkXRect* xr, const SkIRect& src) { |
76 xr->fLeft = SkIntToFixed(src.fLeft); | 85 xr->fLeft = SkIntToFixed(src.fLeft); |
77 xr->fTop = SkIntToFixed(src.fTop); | 86 xr->fTop = SkIntToFixed(src.fTop); |
78 xr->fRight = SkIntToFixed(src.fRight); | 87 xr->fRight = SkIntToFixed(src.fRight); |
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103 for right/bottom), and store the result in the SkIRect. | 112 for right/bottom), and store the result in the SkIRect. |
104 */ | 113 */ |
105 static inline void XRect_roundOut(const SkXRect& xr, SkIRect* dst) { | 114 static inline void XRect_roundOut(const SkXRect& xr, SkIRect* dst) { |
106 dst->fLeft = SkFixedFloorToInt(xr.fLeft); | 115 dst->fLeft = SkFixedFloorToInt(xr.fLeft); |
107 dst->fTop = SkFixedFloorToInt(xr.fTop); | 116 dst->fTop = SkFixedFloorToInt(xr.fTop); |
108 dst->fRight = SkFixedCeilToInt(xr.fRight); | 117 dst->fRight = SkFixedCeilToInt(xr.fRight); |
109 dst->fBottom = SkFixedCeilToInt(xr.fBottom); | 118 dst->fBottom = SkFixedCeilToInt(xr.fBottom); |
110 } | 119 } |
111 | 120 |
112 #endif | 121 #endif |
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