Sk2DPathEffect.cpp revision 90bf427001fd4f6d9fcee88911deb015aeb4ab7c
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 7ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 8ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 98a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "Sk2DPathEffect.h" 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkBlitter.h" 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPath.h" 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkScan.h" 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass Sk2DPathEffectBlitter : public SkBlitter { 168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Sk2DPathEffectBlitter(Sk2DPathEffect* pe, SkPath* dst) 1816edff2b1cbd80e36456138f8631711a585205bareed@google.com : fPE(pe), fDst(dst) {} 1916edff2b1cbd80e36456138f8631711a585205bareed@google.com 2016edff2b1cbd80e36456138f8631711a585205bareed@google.com virtual void blitH(int x, int y, int count) { 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fPE->nextSpan(x, y, count, fDst); 228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Sk2DPathEffect* fPE; 258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath* fDst; 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 2816edff2b1cbd80e36456138f8631711a585205bareed@google.com/////////////////////////////////////////////////////////////////////////////// 298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3016edff2b1cbd80e36456138f8631711a585205bareed@google.comSk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) { 3190bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org fMatrixIsInvertible = mat.invert(&fInverse); 328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 3416edff2b1cbd80e36456138f8631711a585205bareed@google.combool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width) { 3590bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org if (!fMatrixIsInvertible) { 3690bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org return false; 3790bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org } 3890bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Sk2DPathEffectBlitter blitter(this, dst); 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath tmp; 418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkIRect ir; 428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 438a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com src.transform(fInverse, &tmp); 44d252db03d9650013b545ef9781fe993c07f8f314reed@android.com tmp.getBounds().round(&ir); 458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com if (!ir.isEmpty()) { 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->begin(ir, dst); 47045e62d715f5ee9b03deb5af3c750f8318096179reed@google.com SkScan::FillPath(tmp, ir, &blitter); 488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->end(dst); 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return true; 518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 5316edff2b1cbd80e36456138f8631711a585205bareed@google.comvoid Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) { 5490bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org if (!fMatrixIsInvertible) { 5590bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org return; 5690bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org } 5790bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org 588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkMatrix& mat = this->getMatrix(); 598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPoint src, dst; 608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf); 628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com do { 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mat.mapPoints(&dst, &src, 1); 648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->next(dst, x++, y, path); 658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com src.fX += SK_Scalar1; 668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } while (--count > 0); 678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) {} 708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) {} 718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::end(SkPath* dst) {} 728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7316edff2b1cbd80e36456138f8631711a585205bareed@google.com/////////////////////////////////////////////////////////////////////////////// 748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 7554924243c1b65b3ee6d8fa064b50a9b1bb2a19a5djsollen@google.comvoid Sk2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) const { 7654924243c1b65b3ee6d8fa064b50a9b1bb2a19a5djsollen@google.com this->INHERITED::flatten(buffer); 771a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org char storage[SkMatrix::kMaxFlattenSize]; 781a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org uint32_t size = fMatrix.flatten(storage); 791a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org buffer.write32(size); 801a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org buffer.write(storage, size); 818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 8316edff2b1cbd80e36456138f8631711a585205bareed@google.comSk2DPathEffect::Sk2DPathEffect(SkFlattenableReadBuffer& buffer) { 841a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org char storage[SkMatrix::kMaxFlattenSize]; 851a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org uint32_t size = buffer.readS32(); 861a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org SkASSERT(size <= sizeof(storage)); 871a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org buffer.read(storage, size); 881a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org fMatrix.unflatten(storage); 8990bf427001fd4f6d9fcee88911deb015aeb4ab7cmike@reedtribe.org fMatrixIsInvertible = fMatrix.invert(&fInverse); 908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 92e28b917669fc4677b2f1c0a08c4711b651cbf1a1reed@google.com/////////////////////////////////////////////////////////////////////////////// 9318dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com/////////////////////////////////////////////////////////////////////////////// 9418dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com 9518dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.comSkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p) 9618dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com : INHERITED(m), fPath(p) { 9718dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com} 9818dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com 9918dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.comSkPath2DPathEffect::SkPath2DPathEffect(SkFlattenableReadBuffer& buffer) 10018dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com : INHERITED(buffer) { 1012b2ede3e713065e1bac461787b0aafb03eaf871fdjsollen@google.com buffer.readPath(&fPath); 10218dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com} 10318dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com 10454924243c1b65b3ee6d8fa064b50a9b1bb2a19a5djsollen@google.comvoid SkPath2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) const { 10518dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com this->INHERITED::flatten(buffer); 1062b2ede3e713065e1bac461787b0aafb03eaf871fdjsollen@google.com buffer.writePath(fPath); 10718dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com} 10818dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com 10918dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.comvoid SkPath2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) { 11018dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com dst->addPath(fPath, loc.fX, loc.fY); 11118dc47731f4b37d8896b51f1b92ab31abd78b5a0reed@google.com} 1128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 113a2ca41e3afdd8fad5e0e924dec029f33918e0a67djsollen@google.com/////////////////////////////////////////////////////////////////////////////// 1148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 115a2ca41e3afdd8fad5e0e924dec029f33918e0a67djsollen@google.comSK_DEFINE_FLATTENABLE_REGISTRAR(SkPath2DPathEffect) 116