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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 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 #include "Sk1DPathEffect.h" | 10 #include "Sk1DPathEffect.h" |
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28 } | 28 } |
29 } while (meas.nextContour()); | 29 } while (meas.nextContour()); |
30 return true; | 30 return true; |
31 } | 31 } |
32 | 32 |
33 /////////////////////////////////////////////////////////////////////////////// | 33 /////////////////////////////////////////////////////////////////////////////// |
34 | 34 |
35 SkPath1DPathEffect::SkPath1DPathEffect(const SkPath& path, SkScalar advance, | 35 SkPath1DPathEffect::SkPath1DPathEffect(const SkPath& path, SkScalar advance, |
36 SkScalar phase, Style style) : fPath(path) | 36 SkScalar phase, Style style) : fPath(path) |
37 { | 37 { |
38 SkASSERT(advance > 0 && !path.isEmpty()); | 38 if (advance <= 0 || path.isEmpty()) { |
39 // cleanup their phase parameter, inverting it so that it becomes an | 39 SkDEBUGF(("SkPath1DPathEffect can't use advance <= 0\n")); |
40 // offset along the path (to match the interpretation in PostScript) | 40 fAdvance = 0; // signals we can't draw anything |
41 if (phase < 0) { | 41 fInitialOffset = 0; |
42 phase = -phase; | 42 fStyle = kStyleCount; |
43 if (phase > advance) { | 43 } else { |
44 phase = SkScalarMod(phase, advance); | 44 // cleanup their phase parameter, inverting it so that it becomes an |
| 45 // offset along the path (to match the interpretation in PostScript) |
| 46 if (phase < 0) { |
| 47 phase = -phase; |
| 48 if (phase > advance) { |
| 49 phase = SkScalarMod(phase, advance); |
| 50 } |
| 51 } else { |
| 52 if (phase > advance) { |
| 53 phase = SkScalarMod(phase, advance); |
| 54 } |
| 55 phase = advance - phase; |
45 } | 56 } |
46 } else { | 57 // now catch the edge case where phase == advance (within epsilon) |
47 if (phase > advance) { | 58 if (phase >= advance) { |
48 phase = SkScalarMod(phase, advance); | 59 phase = 0; |
49 } | 60 } |
50 phase = advance - phase; | 61 SkASSERT(phase >= 0); |
| 62 |
| 63 fAdvance = advance; |
| 64 fInitialOffset = phase; |
| 65 |
| 66 if ((unsigned)style >= kStyleCount) { |
| 67 SkDEBUGF(("SkPath1DPathEffect style enum out of range %d\n", style))
; |
| 68 } |
| 69 fStyle = style; |
51 } | 70 } |
52 // now catch the edge case where phase == advance (within epsilon) | |
53 if (phase >= advance) { | |
54 phase = 0; | |
55 } | |
56 SkASSERT(phase >= 0); | |
57 | |
58 fAdvance = advance; | |
59 fInitialOffset = phase; | |
60 | |
61 if ((unsigned)style > kMorph_Style) { | |
62 SkDEBUGF(("SkPath1DPathEffect style enum out of range %d\n", style)); | |
63 } | |
64 fStyle = style; | |
65 } | 71 } |
66 | 72 |
67 bool SkPath1DPathEffect::filterPath(SkPath* dst, const SkPath& src, | 73 bool SkPath1DPathEffect::filterPath(SkPath* dst, const SkPath& src, |
68 SkStrokeRec* rec, const SkRect* cullRect) const { | 74 SkStrokeRec* rec, const SkRect* cullRect) const { |
69 if (fAdvance > 0) { | 75 if (fAdvance > 0) { |
70 rec->setFillStyle(); | 76 rec->setFillStyle(); |
71 return this->INHERITED::filterPath(dst, src, rec, cullRect); | 77 return this->INHERITED::filterPath(dst, src, rec, cullRect); |
72 } | 78 } |
73 return false; | 79 return false; |
74 } | 80 } |
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194 | 200 |
195 | 201 |
196 #ifndef SK_IGNORE_TO_STRING | 202 #ifndef SK_IGNORE_TO_STRING |
197 void SkPath1DPathEffect::toString(SkString* str) const { | 203 void SkPath1DPathEffect::toString(SkString* str) const { |
198 str->appendf("SkPath1DPathEffect: ("); | 204 str->appendf("SkPath1DPathEffect: ("); |
199 // TODO: add path and style | 205 // TODO: add path and style |
200 str->appendf("advance: %.2f phase %.2f", fAdvance, fInitialOffset); | 206 str->appendf("advance: %.2f phase %.2f", fAdvance, fInitialOffset); |
201 str->appendf(")"); | 207 str->appendf(")"); |
202 } | 208 } |
203 #endif | 209 #endif |
204 | |
205 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | |
206 | |
207 SkPathEffect* SkPath1DPathEffect::Create(const SkPath& path, SkScalar advance, S
kScalar phase, | |
208 Style style) { | |
209 if (advance <= 0 || path.isEmpty()) { | |
210 return nullptr; | |
211 } | |
212 return new SkPath1DPathEffect(path, advance, phase, style); | |
213 } | |
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