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1 /* | |
2 * Copyright 2016 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef GrStyle_DEFINED | |
9 #define GrStyle_DEFINED | |
10 | |
11 #include "GrTypes.h" | |
12 #include "SkPathEffect.h" | |
13 #include "SkStrokeRec.h" | |
14 #include "SkTemplates.h" | |
15 | |
16 /** | |
17 * Represents the various ways that a GrShape can be styled. It has fill/strokin
g information | |
18 * as well as an optional path effect. If the path effect represents dashing, th
e dashing | |
19 * information is extracted from the path effect and stored explicitly. | |
20 * | |
21 * This object does not support stroke-and-fill styling. It is expected that str
oking and filling | |
22 * is handled by drawing a stroke and a fill separately. | |
23 * | |
24 * This will replace GrStrokeInfo as GrShape is deployed. | |
25 */ | |
26 class GrStyle { | |
27 public: | |
28 GrStyle() : fStrokeRec(SkStrokeRec::kFill_InitStyle) { | |
29 fDashInfo.fType = SkPathEffect::kNone_DashType; | |
30 } | |
31 | |
32 GrStyle(const SkStrokeRec& strokeRec, SkPathEffect* pe) : fStrokeRec(strokeR
ec) { | |
33 SkASSERT(SkStrokeRec::kStrokeAndFill_Style != strokeRec.getStyle()); | |
34 this->initPathEffect(pe); | |
35 } | |
36 | |
37 GrStyle(const GrStyle& that) : fStrokeRec(SkStrokeRec::kFill_InitStyle) { | |
38 *this = that; | |
39 } | |
40 | |
41 explicit GrStyle(const SkPaint& paint) : fStrokeRec(paint) { | |
42 SkASSERT(SkStrokeRec::kStrokeAndFill_Style != fStrokeRec.getStyle()); | |
43 this->initPathEffect(paint.getPathEffect()); | |
44 } | |
45 | |
46 GrStyle& operator=(const GrStyle& that) { | |
47 fPathEffect = that.fPathEffect; | |
48 fDashInfo = that.fDashInfo; | |
49 fStrokeRec = that.fStrokeRec; | |
50 return *this; | |
51 } | |
52 SkPathEffect* pathEffect() const { return fPathEffect.get(); } | |
53 | |
54 bool isDashed() const { return SkPathEffect::kDash_DashType == fDashInfo.fTy
pe; } | |
55 SkScalar dashPhase() const { | |
56 SkASSERT(this->isDashed()); | |
57 return fDashInfo.fPhase; | |
58 } | |
59 int dashIntervalCnt() const { | |
60 SkASSERT(this->isDashed()); | |
61 return fDashInfo.fIntervals.count(); | |
62 } | |
63 const SkScalar* dashIntervals() const { | |
64 SkASSERT(this->isDashed()); | |
65 return fDashInfo.fIntervals.get(); | |
66 } | |
67 | |
68 const SkStrokeRec& strokeRec() const { return fStrokeRec; } | |
69 | |
70 private: | |
71 void initPathEffect(SkPathEffect* pe); | |
72 | |
73 struct DashInfo { | |
74 DashInfo& operator=(const DashInfo& that) { | |
75 fType = that.fType; | |
76 fPhase = that.fPhase; | |
77 fIntervals.reset(that.fIntervals.count()); | |
78 memcpy(fIntervals.get(), that.fIntervals.get(), | |
79 sizeof(SkScalar) * that.fIntervals.count()); | |
80 return *this; | |
81 } | |
82 SkPathEffect::DashType fType; | |
83 SkScalar fPhase; | |
84 SkAutoSTArray<4, SkScalar> fIntervals; | |
85 }; | |
86 | |
87 SkStrokeRec fStrokeRec; | |
88 sk_sp<SkPathEffect> fPathEffect; | |
89 DashInfo fDashInfo; | |
90 }; | |
91 | |
92 #endif | |
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