The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/effects/Sk2DPathEffect.cpp
gfx/skia/trunk/src/effects/Sk2DPathEffect.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:b158d12676c4 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2006 The Android Open Source Project | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #include "Sk2DPathEffect.h" | |
| 11 #include "SkReadBuffer.h" | |
| 12 #include "SkWriteBuffer.h" | |
| 13 #include "SkPath.h" | |
| 14 #include "SkRegion.h" | |
| 15 | |
| 16 Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) { | |
| 17 fMatrixIsInvertible = mat.invert(&fInverse); | |
| 18 } | |
| 19 | |
| 20 bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, | |
| 21 SkStrokeRec*, const SkRect*) const { | |
| 22 if (!fMatrixIsInvertible) { | |
| 23 return false; | |
| 24 } | |
| 25 | |
| 26 SkPath tmp; | |
| 27 SkIRect ir; | |
| 28 | |
| 29 src.transform(fInverse, &tmp); | |
| 30 tmp.getBounds().round(&ir); | |
| 31 if (!ir.isEmpty()) { | |
| 32 this->begin(ir, dst); | |
| 33 | |
| 34 SkRegion rgn; | |
| 35 rgn.setPath(tmp, SkRegion(ir)); | |
| 36 SkRegion::Iterator iter(rgn); | |
| 37 for (; !iter.done(); iter.next()) { | |
| 38 const SkIRect& rect = iter.rect(); | |
| 39 for (int y = rect.fTop; y < rect.fBottom; ++y) { | |
| 40 this->nextSpan(rect.fLeft, y, rect.width(), dst); | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 this->end(dst); | |
| 45 } | |
| 46 return true; | |
| 47 } | |
| 48 | |
| 49 void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) const { | |
| 50 if (!fMatrixIsInvertible) { | |
| 51 return; | |
| 52 } | |
| 53 | |
| 54 const SkMatrix& mat = this->getMatrix(); | |
| 55 SkPoint src, dst; | |
| 56 | |
| 57 src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf); | |
| 58 do { | |
| 59 mat.mapPoints(&dst, &src, 1); | |
| 60 this->next(dst, x++, y, path); | |
| 61 src.fX += SK_Scalar1; | |
| 62 } while (--count > 0); | |
| 63 } | |
| 64 | |
| 65 void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) const {} | |
| 66 void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) const {} | |
| 67 void Sk2DPathEffect::end(SkPath* dst) const {} | |
| 68 | |
| 69 /////////////////////////////////////////////////////////////////////////////// | |
| 70 | |
| 71 void Sk2DPathEffect::flatten(SkWriteBuffer& buffer) const { | |
| 72 this->INHERITED::flatten(buffer); | |
| 73 buffer.writeMatrix(fMatrix); | |
| 74 } | |
| 75 | |
| 76 Sk2DPathEffect::Sk2DPathEffect(SkReadBuffer& buffer) { | |
| 77 buffer.readMatrix(&fMatrix); | |
| 78 fMatrixIsInvertible = fMatrix.invert(&fInverse); | |
| 79 } | |
| 80 | |
| 81 /////////////////////////////////////////////////////////////////////////////// | |
| 82 | |
| 83 bool SkLine2DPathEffect::filterPath(SkPath* dst, const SkPath& src, | |
| 84 SkStrokeRec* rec, const SkRect* cullRect) const { | |
| 85 if (this->INHERITED::filterPath(dst, src, rec, cullRect)) { | |
| 86 rec->setStrokeStyle(fWidth); | |
| 87 return true; | |
| 88 } | |
| 89 return false; | |
| 90 } | |
| 91 | |
| 92 void SkLine2DPathEffect::nextSpan(int u, int v, int ucount, SkPath* dst) const { | |
| 93 if (ucount > 1) { | |
| 94 SkPoint src[2], dstP[2]; | |
| 95 | |
| 96 src[0].set(SkIntToScalar(u) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf); | |
| 97 src[1].set(SkIntToScalar(u+ucount) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf); | |
| 98 this->getMatrix().mapPoints(dstP, src, 2); | |
| 99 | |
| 100 dst->moveTo(dstP[0]); | |
| 101 dst->lineTo(dstP[1]); | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 SkLine2DPathEffect::SkLine2DPathEffect(SkReadBuffer& buffer) : INHERITED(buffer) { | |
| 106 fWidth = buffer.readScalar(); | |
| 107 } | |
| 108 | |
| 109 void SkLine2DPathEffect::flatten(SkWriteBuffer &buffer) const { | |
| 110 this->INHERITED::flatten(buffer); | |
| 111 buffer.writeScalar(fWidth); | |
| 112 } | |
| 113 | |
| 114 /////////////////////////////////////////////////////////////////////////////// | |
| 115 | |
| 116 SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p) | |
| 117 : INHERITED(m), fPath(p) { | |
| 118 } | |
| 119 | |
| 120 SkPath2DPathEffect::SkPath2DPathEffect(SkReadBuffer& buffer) | |
| 121 : INHERITED(buffer) { | |
| 122 buffer.readPath(&fPath); | |
| 123 } | |
| 124 | |
| 125 void SkPath2DPathEffect::flatten(SkWriteBuffer& buffer) const { | |
| 126 this->INHERITED::flatten(buffer); | |
| 127 buffer.writePath(fPath); | |
| 128 } | |
| 129 | |
| 130 void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v, | |
| 131 SkPath* dst) const { | |
| 132 dst->addPath(fPath, loc.fX, loc.fY); | |
| 133 } |
