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Side by Side Diff: src/core/SkDrawProcs.h

Issue 1476563002: Remove SkDrawProcs (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: add back skdraw Created 5 years ago
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1 /* 1 /*
2 * Copyright 2011 Google Inc. 2 * Copyright 2011 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #ifndef SkDrawProcs_DEFINED 8 #ifndef SkDrawProcs_DEFINED
9 #define SkDrawProcs_DEFINED 9 #define SkDrawProcs_DEFINED
10 10
11 #include "SkBlitter.h"
12 #include "SkDraw.h" 11 #include "SkDraw.h"
13 #include "SkGlyph.h" 12 #include "SkGlyph.h"
14 13
15 class SkAAClip;
16 class SkBlitter;
17
18 struct SkDraw1Glyph {
19 const SkDraw* fDraw;
20 const SkRegion* fClip;
21 const SkAAClip* fAAClip;
22 SkBlitter* fBlitter;
23 SkGlyphCache* fCache;
24 const SkPaint* fPaint;
25 SkIRect fClipBounds;
26 /** Half the sampling frequency of the rasterized glyph in x. */
27 SkScalar fHalfSampleX;
28 /** Half the sampling frequency of the rasterized glyph in y. */
29 SkScalar fHalfSampleY;
30
31 /** Draws one glyph.
32 *
33 * The x and y are pre-biased, so implementations may just truncate them.
34 * i.e. half the sampling frequency has been added.
35 * e.g. 1/2 or 1/(2^(SkGlyph::kSubBits+1)) has already been added.
36 * This added bias can be found in fHalfSampleX,Y.
37 */
38 typedef void (*Proc)(const SkDraw1Glyph&, Sk48Dot16 x, Sk48Dot16 y, const Sk Glyph&);
39
40 Proc init(const SkDraw* draw, SkBlitter* blitter, SkGlyphCache* cache,
41 const SkPaint&);
42
43 // call this instead of fBlitter->blitMask() since this wrapper will handle
44 // the case when the mask is ARGB32_Format
45 //
46 void blitMask(const SkMask& mask, const SkIRect& clip) const {
47 if (SkMask::kARGB32_Format == mask.fFormat) {
48 this->blitMaskAsSprite(mask);
49 } else {
50 fBlitter->blitMask(mask, clip);
51 }
52 }
53
54 // mask must be kARGB32_Format
55 void blitMaskAsSprite(const SkMask& mask) const;
56 };
57
58 struct SkDrawProcs {
59 SkDraw1Glyph::Proc fD1GProc;
60 };
61
62 bool SkDrawTreatAAStrokeAsHairline(SkScalar strokeWidth, const SkMatrix&, 14 bool SkDrawTreatAAStrokeAsHairline(SkScalar strokeWidth, const SkMatrix&,
63 SkScalar* coverage); 15 SkScalar* coverage);
64 16
65 /** 17 /**
66 * If the current paint is set to stroke and the stroke-width when applied to 18 * If the current paint is set to stroke and the stroke-width when applied to
67 * the matrix is <= 1.0, then this returns true, and sets coverage (simulating 19 * the matrix is <= 1.0, then this returns true, and sets coverage (simulating
68 * a stroke by drawing a hairline with partial coverage). If any of these 20 * a stroke by drawing a hairline with partial coverage). If any of these
69 * conditions are false, then this returns false and coverage is ignored. 21 * conditions are false, then this returns false and coverage is ignored.
70 */ 22 */
71 inline bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix, 23 inline bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix,
(...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after
105 SkASSERT(SkPaint::kRight_Align == fAlign); 57 SkASSERT(SkPaint::kRight_Align == fAlign);
106 dst->set(loc.fX - SkFixedToScalar(glyph.fAdvanceX), 58 dst->set(loc.fX - SkFixedToScalar(glyph.fAdvanceX),
107 loc.fY - SkFixedToScalar(glyph.fAdvanceY)); 59 loc.fY - SkFixedToScalar(glyph.fAdvanceY));
108 } 60 }
109 } 61 }
110 private: 62 private:
111 const SkPaint::Align fAlign; 63 const SkPaint::Align fAlign;
112 }; 64 };
113 65
114 #endif 66 #endif
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