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1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 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 GrStyle_DEFINED | 8 #ifndef GrStyle_DEFINED |
9 #define GrStyle_DEFINED | 9 #define GrStyle_DEFINED |
10 | 10 |
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53 // The shape being styled has no open contours. | 53 // The shape being styled has no open contours. |
54 kClosed_KeyFlag = 0x1 | 54 kClosed_KeyFlag = 0x1 |
55 }; | 55 }; |
56 | 56 |
57 /** | 57 /** |
58 * Computes the key length for a GrStyle. The return will be negative if it
cannot be turned | 58 * Computes the key length for a GrStyle. The return will be negative if it
cannot be turned |
59 * into a key. This occurs when there is a path effect that is not a dash. T
he key can | 59 * into a key. This occurs when there is a path effect that is not a dash. T
he key can |
60 * either reflect just the path effect (if one) or the path effect and the s
trokerec. Note | 60 * either reflect just the path effect (if one) or the path effect and the s
trokerec. Note |
61 * that a simple fill has a zero sized key. | 61 * that a simple fill has a zero sized key. |
62 */ | 62 */ |
63 static int KeySize(const GrStyle& , Apply, uint32_t flags = 0); | 63 static int KeySize(const GrStyle&, Apply, uint32_t flags = 0); |
64 | 64 |
65 /** | 65 /** |
66 * Writes a unique key for the style into the provided buffer. This function
assumes the buffer | 66 * Writes a unique key for the style into the provided buffer. This function
assumes the buffer |
67 * has room for at least KeySize() values. It assumes that KeySize() returns
a non-negative | 67 * has room for at least KeySize() values. It assumes that KeySize() returns
a non-negative |
68 * value for the combination of GrStyle, Apply and flags params. This is wri
tten so that the key | 68 * value for the combination of GrStyle, Apply and flags params. This is wri
tten so that the key |
69 * for just dash application followed by the key for the remaining SkStrokeR
ec is the same as | 69 * for just dash application followed by the key for the remaining SkStrokeR
ec is the same as |
70 * the key for applying dashing and SkStrokeRec all at once. | 70 * the key for applying dashing and SkStrokeRec all at once. |
71 */ | 71 */ |
72 static void WriteKey(uint32_t*, const GrStyle&, Apply, uint32_t flags = 0); | 72 static void WriteKey(uint32_t*, const GrStyle&, Apply, SkScalar scale, uint3
2_t flags = 0); |
73 | 73 |
74 GrStyle() : GrStyle(SkStrokeRec::kFill_InitStyle) {} | 74 GrStyle() : GrStyle(SkStrokeRec::kFill_InitStyle) {} |
75 | 75 |
76 explicit GrStyle(SkStrokeRec::InitStyle initStyle) : fStrokeRec(initStyle) {
} | 76 explicit GrStyle(SkStrokeRec::InitStyle initStyle) : fStrokeRec(initStyle) {
} |
77 | 77 |
78 GrStyle(const SkStrokeRec& strokeRec, SkPathEffect* pe) : fStrokeRec(strokeR
ec) { | 78 GrStyle(const SkStrokeRec& strokeRec, SkPathEffect* pe) : fStrokeRec(strokeR
ec) { |
79 this->initPathEffect(pe); | 79 this->initPathEffect(pe); |
80 } | 80 } |
81 | 81 |
82 GrStyle(const GrStyle& that) : fStrokeRec(SkStrokeRec::kFill_InitStyle) { *t
his = that; } | 82 GrStyle(const GrStyle& that) : fStrokeRec(SkStrokeRec::kFill_InitStyle) { *t
his = that; } |
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128 | 128 |
129 const SkStrokeRec& strokeRec() const { return fStrokeRec; } | 129 const SkStrokeRec& strokeRec() const { return fStrokeRec; } |
130 | 130 |
131 /** Hairline or fill styles without path effects make no alterations to a ge
ometry. */ | 131 /** Hairline or fill styles without path effects make no alterations to a ge
ometry. */ |
132 bool applies() const { | 132 bool applies() const { |
133 return this->pathEffect() || (!fStrokeRec.isFillStyle() && !fStrokeRec.i
sHairlineStyle()); | 133 return this->pathEffect() || (!fStrokeRec.isFillStyle() && !fStrokeRec.i
sHairlineStyle()); |
134 } | 134 } |
135 | 135 |
136 /** | 136 /** |
137 * Applies just the path effect and returns remaining stroke information. Th
is will fail if | 137 * Applies just the path effect and returns remaining stroke information. Th
is will fail if |
138 * there is no path effect. dst may or may not have been overwritten on fail
ure. | 138 * there is no path effect. dst may or may not have been overwritten on fail
ure. Scale controls |
| 139 * geometric approximations made by the path effect. It is typically compute
d from the view |
| 140 * matrix. |
139 */ | 141 */ |
140 bool SK_WARN_UNUSED_RESULT applyPathEffectToPath(SkPath* dst, SkStrokeRec* r
emainingStoke, | 142 bool SK_WARN_UNUSED_RESULT applyPathEffectToPath(SkPath* dst, SkStrokeRec* r
emainingStoke, |
141 const SkPath& src) const; | 143 const SkPath& src, SkScalar
scale) const; |
142 | 144 |
143 /** If this succeeds then the result path should be filled or hairlined as i
ndicated by the | 145 /** |
144 returned SkStrokeRec::InitStyle value. Will fail if there is no path eff
ect and the | 146 * If this succeeds then the result path should be filled or hairlined as in
dicated by the |
145 strokerec doesn't change the geometry. When this fails the outputs may o
r may not have | 147 * returned SkStrokeRec::InitStyle value. Will fail if there is no path effe
ct and the |
146 been overwritten. | 148 * strokerec doesn't change the geometry. When this fails the outputs may or
may not have |
147 */ | 149 * been overwritten. Scale controls geometric approximations made by the pat
h effect and |
| 150 * stroker. It is typically computed from the view matrix. |
| 151 */ |
148 bool SK_WARN_UNUSED_RESULT applyToPath(SkPath* dst, SkStrokeRec::InitStyle*
fillOrHairline, | 152 bool SK_WARN_UNUSED_RESULT applyToPath(SkPath* dst, SkStrokeRec::InitStyle*
fillOrHairline, |
149 const SkPath& src) const; | 153 const SkPath& src, SkScalar scale) co
nst; |
150 | 154 |
151 /** Given bounds of a path compute the bounds of path with the style applied
. */ | 155 /** Given bounds of a path compute the bounds of path with the style applied
. */ |
152 void adjustBounds(SkRect* dst, const SkRect& src) const { | 156 void adjustBounds(SkRect* dst, const SkRect& src) const { |
153 if (this->pathEffect()) { | 157 if (this->pathEffect()) { |
154 this->pathEffect()->computeFastBounds(dst, src); | 158 this->pathEffect()->computeFastBounds(dst, src); |
155 } else { | 159 } else { |
156 SkScalar radius = fStrokeRec.getInflationRadius(); | 160 SkScalar radius = fStrokeRec.getInflationRadius(); |
157 *dst = src.makeOutset(radius, radius); | 161 *dst = src.makeOutset(radius, radius); |
158 } | 162 } |
159 } | 163 } |
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179 SkScalar fPhase; | 183 SkScalar fPhase; |
180 SkAutoSTArray<4, SkScalar> fIntervals; | 184 SkAutoSTArray<4, SkScalar> fIntervals; |
181 }; | 185 }; |
182 | 186 |
183 SkStrokeRec fStrokeRec; | 187 SkStrokeRec fStrokeRec; |
184 sk_sp<SkPathEffect> fPathEffect; | 188 sk_sp<SkPathEffect> fPathEffect; |
185 DashInfo fDashInfo; | 189 DashInfo fDashInfo; |
186 }; | 190 }; |
187 | 191 |
188 #endif | 192 #endif |
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