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| 1 /* libs/graphics/effects/Sk2DPathEffect.cpp | |
| 2 ** | |
| 3 ** Copyright 2006, The Android Open Source Project | |
| 4 ** | |
| 5 ** Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 ** you may not use this file except in compliance with the License. | |
| 7 ** You may obtain a copy of the License at | |
| 8 ** | |
| 9 ** http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 ** | |
| 11 ** Unless required by applicable law or agreed to in writing, software | |
| 12 ** distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 ** See the License for the specific language governing permissions and | |
| 15 ** limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 #include "Sk2DPathEffect.h" | |
| 19 #include "SkBlitter.h" | |
| 20 #include "SkPath.h" | |
| 21 #include "SkScan.h" | |
| 22 | |
| 23 class Sk2DPathEffectBlitter : public SkBlitter { | |
| 24 public: | |
| 25 Sk2DPathEffectBlitter(Sk2DPathEffect* pe, SkPath* dst) | |
| 26 : fPE(pe), fDst(dst) | |
| 27 {} | |
| 28 virtual void blitH(int x, int y, int count) | |
| 29 { | |
| 30 fPE->nextSpan(x, y, count, fDst); | |
| 31 } | |
| 32 private: | |
| 33 Sk2DPathEffect* fPE; | |
| 34 SkPath* fDst; | |
| 35 }; | |
| 36 | |
| 37 ////////////////////////////////////////////////////////////////////////////////
//// | |
| 38 | |
| 39 Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) | |
| 40 { | |
| 41 mat.invert(&fInverse); | |
| 42 } | |
| 43 | |
| 44 bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width) | |
| 45 { | |
| 46 Sk2DPathEffectBlitter blitter(this, dst); | |
| 47 SkPath tmp; | |
| 48 SkRect bounds; | |
| 49 SkIRect ir; | |
| 50 | |
| 51 src.transform(fInverse, &tmp); | |
| 52 tmp.computeBounds(&bounds, SkPath::kExact_BoundsType); | |
| 53 bounds.round(&ir); | |
| 54 if (!ir.isEmpty()) { | |
| 55 // need to pass a clip to fillpath, required for inverse filltypes, | |
| 56 // even though those do not make sense for this patheffect | |
| 57 SkRegion clip(ir); | |
| 58 | |
| 59 this->begin(ir, dst); | |
| 60 SkScan::FillPath(tmp, clip, &blitter); | |
| 61 this->end(dst); | |
| 62 } | |
| 63 return true; | |
| 64 } | |
| 65 | |
| 66 void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) | |
| 67 { | |
| 68 const SkMatrix& mat = this->getMatrix(); | |
| 69 SkPoint src, dst; | |
| 70 | |
| 71 src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf); | |
| 72 do { | |
| 73 mat.mapPoints(&dst, &src, 1); | |
| 74 this->next(dst, x++, y, path); | |
| 75 src.fX += SK_Scalar1; | |
| 76 } while (--count > 0); | |
| 77 } | |
| 78 | |
| 79 void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) {} | |
| 80 void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) {} | |
| 81 void Sk2DPathEffect::end(SkPath* dst) {} | |
| 82 | |
| 83 //////////////////////////////////////////////////////////////////////////////// | |
| 84 | |
| 85 void Sk2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) | |
| 86 { | |
| 87 buffer.writeMul4(&fMatrix, sizeof(fMatrix)); | |
| 88 } | |
| 89 | |
| 90 Sk2DPathEffect::Sk2DPathEffect(SkFlattenableReadBuffer& buffer) | |
| 91 { | |
| 92 buffer.read(&fMatrix, sizeof(fMatrix)); | |
| 93 fMatrix.invert(&fInverse); | |
| 94 } | |
| 95 | |
| 96 SkFlattenable::Factory Sk2DPathEffect::getFactory() | |
| 97 { | |
| 98 return CreateProc; | |
| 99 } | |
| 100 | |
| 101 SkFlattenable* Sk2DPathEffect::CreateProc(SkFlattenableReadBuffer& buffer) | |
| 102 { | |
| 103 return SkNEW_ARGS(Sk2DPathEffect, (buffer)); | |
| 104 } | |
| 105 | |
| 106 | |
| 107 | |
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Chromium Code Reviews
Issue 113827:
Remove the remainder of the skia source code from the Chromium repo.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/