| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright 2014 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 GrStrokeInfo_DEFINED | |
| 9 #define GrStrokeInfo_DEFINED | |
| 10 | |
| 11 #include "SkPathEffect.h" | |
| 12 #include "SkStrokeRec.h" | |
| 13 #include "SkTemplates.h" | |
| 14 | |
| 15 class GrUniqueKey; | |
| 16 | |
| 17 /* | |
| 18 * GrStrokeInfo encapsulates all the pertinent infomation regarding the stroke.
The SkStrokeRec | |
| 19 * which holds information on fill style, width, miter, cap, and join. It also h
olds information | |
| 20 * about the dash like intervals, count, and phase. | |
| 21 */ | |
| 22 class GrStrokeInfo : public SkStrokeRec { | |
| 23 public: | |
| 24 static const GrStrokeInfo& FillInfo() { | |
| 25 static const GrStrokeInfo gFill(kFill_InitStyle); | |
| 26 return gFill; | |
| 27 } | |
| 28 | |
| 29 GrStrokeInfo(SkStrokeRec::InitStyle style) | |
| 30 : INHERITED(style) | |
| 31 , fDashType(SkPathEffect::kNone_DashType) { | |
| 32 } | |
| 33 | |
| 34 GrStrokeInfo(const GrStrokeInfo& src, bool includeDash = true) | |
| 35 : INHERITED(src) { | |
| 36 if (includeDash && src.isDashed()) { | |
| 37 fDashType = src.fDashType; | |
| 38 fDashPhase = src.fDashPhase; | |
| 39 fIntervals.reset(src.getDashCount()); | |
| 40 memcpy(fIntervals.get(), src.fIntervals.get(), fIntervals.count() *
sizeof(SkScalar)); | |
| 41 } else { | |
| 42 fDashType = SkPathEffect::kNone_DashType; | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 GrStrokeInfo(const SkPaint& paint, SkPaint::Style styleOverride) | |
| 47 : INHERITED(paint, styleOverride) | |
| 48 , fDashType(SkPathEffect::kNone_DashType) { | |
| 49 this->init(paint); | |
| 50 } | |
| 51 | |
| 52 explicit GrStrokeInfo(const SkPaint& paint) | |
| 53 : INHERITED(paint) | |
| 54 , fDashType(SkPathEffect::kNone_DashType) { | |
| 55 this->init(paint); | |
| 56 } | |
| 57 | |
| 58 GrStrokeInfo& operator=(const GrStrokeInfo& other) { | |
| 59 if (other.isDashed()) { | |
| 60 fDashType = other.fDashType; | |
| 61 fDashPhase = other.fDashPhase; | |
| 62 fIntervals.reset(other.getDashCount()); | |
| 63 memcpy(fIntervals.get(), other.fIntervals.get(), fIntervals.count()
* sizeof(SkScalar)); | |
| 64 } else { | |
| 65 this->removeDash(); | |
| 66 } | |
| 67 this->INHERITED::operator=(other); | |
| 68 return *this; | |
| 69 } | |
| 70 | |
| 71 bool hasEqualEffect(const GrStrokeInfo& other) const { | |
| 72 if (this->isDashed() != other.isDashed()) { | |
| 73 return false; | |
| 74 } | |
| 75 if (this->isDashed()) { | |
| 76 if (fDashPhase != other.fDashPhase || | |
| 77 fIntervals.count() != other.fIntervals.count() || | |
| 78 memcmp(fIntervals.get(), other.fIntervals.get(), | |
| 79 fIntervals.count() * sizeof(SkScalar)) != 0) { | |
| 80 return false; | |
| 81 } | |
| 82 } | |
| 83 return this->INHERITED::hasEqualEffect(other); | |
| 84 } | |
| 85 | |
| 86 /* | |
| 87 * This functions takes in a patheffect and updates the dashing information
if the path effect | |
| 88 * is a Dash type. Returns true if the path effect is a dashed effect and we
are stroking, | |
| 89 * otherwise it returns false. | |
| 90 */ | |
| 91 bool setDashInfo(const SkPathEffect* pe) { | |
| 92 if (pe && !this->isFillStyle()) { | |
| 93 SkPathEffect::DashInfo dashInfo; | |
| 94 fDashType = pe->asADash(&dashInfo); | |
| 95 if (SkPathEffect::kDash_DashType == fDashType) { | |
| 96 fIntervals.reset(dashInfo.fCount); | |
| 97 dashInfo.fIntervals = fIntervals.get(); | |
| 98 pe->asADash(&dashInfo); | |
| 99 fDashPhase = dashInfo.fPhase; | |
| 100 return true; | |
| 101 } | |
| 102 } | |
| 103 return false; | |
| 104 } | |
| 105 | |
| 106 /* | |
| 107 * Like the above, but sets with an explicit SkPathEffect::DashInfo | |
| 108 */ | |
| 109 bool setDashInfo(const SkPathEffect::DashInfo& info) { | |
| 110 if (!this->isFillStyle()) { | |
| 111 fDashType = SkPathEffect::kDash_DashType; | |
| 112 fDashPhase = info.fPhase; | |
| 113 fIntervals.reset(info.fCount); | |
| 114 for (int i = 0; i < fIntervals.count(); i++) { | |
| 115 fIntervals[i] = info.fIntervals[i]; | |
| 116 } | |
| 117 return true; | |
| 118 } | |
| 119 return false; | |
| 120 } | |
| 121 | |
| 122 bool isDashed() const { | |
| 123 return (!this->isFillStyle() && SkPathEffect::kDash_DashType == fDashTyp
e); | |
| 124 } | |
| 125 | |
| 126 int32_t getDashCount() const { | |
| 127 SkASSERT(this->isDashed()); | |
| 128 return fIntervals.count(); | |
| 129 } | |
| 130 | |
| 131 SkScalar getDashPhase() const { | |
| 132 SkASSERT(this->isDashed()); | |
| 133 return fDashPhase; | |
| 134 } | |
| 135 | |
| 136 const SkScalar* getDashIntervals() const { | |
| 137 SkASSERT(this->isDashed()); | |
| 138 return fIntervals.get(); | |
| 139 } | |
| 140 | |
| 141 void removeDash() { | |
| 142 fDashType = SkPathEffect::kNone_DashType; | |
| 143 } | |
| 144 | |
| 145 /** Applies the dash to a path, if the stroke info has dashing. | |
| 146 * @return true if the dashing was applied (dst and dstStrokeInfo will be mo
dified). | |
| 147 * false if the stroke info did not have dashing. The dst and dstStr
okeInfo | |
| 148 * will be unmodified. The stroking in the SkStrokeRec might s
till | |
| 149 * be applicable. | |
| 150 */ | |
| 151 bool applyDashToPath(SkPath* dst, GrStrokeInfo* dstStrokeInfo, const SkPath&
src) const; | |
| 152 | |
| 153 /** | |
| 154 * Computes the length of the data that will be written by asUniqueKeyFragme
nt() function. | |
| 155 */ | |
| 156 int computeUniqueKeyFragmentData32Cnt() const { | |
| 157 const int kSkScalarData32Cnt = sizeof(SkScalar) / sizeof(uint32_t); | |
| 158 // SkStrokeRec data: 32 bits for style+join+cap and 2 scalars for miter
and width. | |
| 159 int strokeKeyData32Cnt = 1 + 2 * kSkScalarData32Cnt; | |
| 160 | |
| 161 if (this->isDashed()) { | |
| 162 // One scalar for dash phase and one for each dash value. | |
| 163 strokeKeyData32Cnt += (1 + this->getDashCount()) * kSkScalarData32Cn
t; | |
| 164 } | |
| 165 return strokeKeyData32Cnt; | |
| 166 } | |
| 167 | |
| 168 /** | |
| 169 * Writes the object contents as uint32_t data, to be used with GrUniqueKey. | |
| 170 * Note: the data written does not encode the length, so care must be taken
to ensure | |
| 171 * that the full unique key data is encoded properly. For example, GrStrokeI
nfo | |
| 172 * fragment can be placed last in the sequence, at fixed index. | |
| 173 */ | |
| 174 void asUniqueKeyFragment(uint32_t*) const; | |
| 175 | |
| 176 private: | |
| 177 // Prevent accidental usage, should use GrStrokeInfo::hasEqualEffect. | |
| 178 bool hasEqualEffect(const SkStrokeRec& other) const; | |
| 179 | |
| 180 void init(const SkPaint& paint) { | |
| 181 const SkPathEffect* pe = paint.getPathEffect(); | |
| 182 this->setDashInfo(pe); | |
| 183 } | |
| 184 | |
| 185 SkPathEffect::DashType fDashType; | |
| 186 SkScalar fDashPhase; | |
| 187 SkAutoSTArray<2, SkScalar> fIntervals; | |
| 188 typedef SkStrokeRec INHERITED; | |
| 189 }; | |
| 190 | |
| 191 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1957363002:
Replace GrStrokeInfo with GrStyle. (Closed)
Base URL: https://chromium.googlesource.com/skia.git@resscale