epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 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 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | |
| 10 | #include "Sk2DPathEffect.h" |
| 11 | #include "SkBlitter.h" |
| 12 | #include "SkPath.h" |
| 13 | #include "SkScan.h" |
| 14 | |
| 15 | class Sk2DPathEffectBlitter : public SkBlitter { |
| 16 | public: |
| 17 | Sk2DPathEffectBlitter(Sk2DPathEffect* pe, SkPath* dst) |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 18 | : fPE(pe), fDst(dst) {} |
| 19 | |
| 20 | virtual void blitH(int x, int y, int count) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 21 | fPE->nextSpan(x, y, count, fDst); |
| 22 | } |
| 23 | private: |
| 24 | Sk2DPathEffect* fPE; |
| 25 | SkPath* fDst; |
| 26 | }; |
| 27 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 28 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 29 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 30 | Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | mat.invert(&fInverse); |
| 32 | } |
| 33 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 34 | bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 35 | Sk2DPathEffectBlitter blitter(this, dst); |
| 36 | SkPath tmp; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 37 | SkIRect ir; |
| 38 | |
| 39 | src.transform(fInverse, &tmp); |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 40 | tmp.getBounds().round(&ir); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 41 | if (!ir.isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 42 | this->begin(ir, dst); |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 43 | SkScan::FillPath(tmp, ir, &blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 44 | this->end(dst); |
| 45 | } |
| 46 | return true; |
| 47 | } |
| 48 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 49 | void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 50 | const SkMatrix& mat = this->getMatrix(); |
| 51 | SkPoint src, dst; |
| 52 | |
| 53 | src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf); |
| 54 | do { |
| 55 | mat.mapPoints(&dst, &src, 1); |
| 56 | this->next(dst, x++, y, path); |
| 57 | src.fX += SK_Scalar1; |
| 58 | } while (--count > 0); |
| 59 | } |
| 60 | |
| 61 | void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) {} |
| 62 | void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) {} |
| 63 | void Sk2DPathEffect::end(SkPath* dst) {} |
| 64 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 65 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 66 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 67 | void Sk2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) { |
senorblanco@chromium.org | 1a39493 | 2011-05-20 19:19:09 +0000 | [diff] [blame] | 68 | char storage[SkMatrix::kMaxFlattenSize]; |
| 69 | uint32_t size = fMatrix.flatten(storage); |
| 70 | buffer.write32(size); |
| 71 | buffer.write(storage, size); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 72 | } |
| 73 | |
reed@google.com | 16edff2 | 2011-08-12 14:10:27 +0000 | [diff] [blame] | 74 | Sk2DPathEffect::Sk2DPathEffect(SkFlattenableReadBuffer& buffer) { |
senorblanco@chromium.org | 1a39493 | 2011-05-20 19:19:09 +0000 | [diff] [blame] | 75 | char storage[SkMatrix::kMaxFlattenSize]; |
| 76 | uint32_t size = buffer.readS32(); |
| 77 | SkASSERT(size <= sizeof(storage)); |
| 78 | buffer.read(storage, size); |
| 79 | fMatrix.unflatten(storage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 80 | fMatrix.invert(&fInverse); |
| 81 | } |
| 82 | |
reed@google.com | e28b917 | 2011-08-09 18:14:31 +0000 | [diff] [blame] | 83 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 18dc477 | 2011-08-09 18:47:40 +0000 | [diff] [blame] | 84 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | |
reed@google.com | 18dc477 | 2011-08-09 18:47:40 +0000 | [diff] [blame] | 86 | SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p) |
| 87 | : INHERITED(m), fPath(p) { |
| 88 | } |
| 89 | |
| 90 | SkPath2DPathEffect::SkPath2DPathEffect(SkFlattenableReadBuffer& buffer) |
| 91 | : INHERITED(buffer) { |
| 92 | fPath.unflatten(buffer); |
| 93 | } |
| 94 | |
reed@google.com | 18dc477 | 2011-08-09 18:47:40 +0000 | [diff] [blame] | 95 | void SkPath2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) { |
| 96 | this->INHERITED::flatten(buffer); |
| 97 | fPath.flatten(buffer); |
| 98 | } |
| 99 | |
reed@google.com | 18dc477 | 2011-08-09 18:47:40 +0000 | [diff] [blame] | 100 | void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) { |
| 101 | dst->addPath(fPath, loc.fX, loc.fY); |
| 102 | } |
| 103 | |
djsollen@google.com | a2ca41e | 2012-03-23 19:00:34 +0000 | [diff] [blame] | 104 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 105 | |
djsollen@google.com | a2ca41e | 2012-03-23 19:00:34 +0000 | [diff] [blame] | 106 | SK_DEFINE_FLATTENABLE_REGISTRAR(SkPath2DPathEffect) |