/* * Copyright 2015 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkString.h" #include "src/core/SkImageFilterPriv.h" #include "src/core/SkLocalMatrixImageFilter.h" #include "src/core/SkReadBuffer.h" #include "src/core/SkSpecialImage.h" sk_sp SkLocalMatrixImageFilter::Make(const SkMatrix& localM, sk_sp input) { if (!input) { return nullptr; } if (localM.isIdentity()) { return input; } if (!input->canHandleComplexCTM() && !localM.isScaleTranslate()) { // Nothing we can do at this point return nullptr; } return sk_sp(new SkLocalMatrixImageFilter(localM, input)); } SkLocalMatrixImageFilter::SkLocalMatrixImageFilter(const SkMatrix& localM, sk_sp input) : INHERITED(&input, 1, nullptr) , fLocalM(localM) { } sk_sp SkLocalMatrixImageFilter::CreateProc(SkReadBuffer& buffer) { SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); SkMatrix lm; buffer.readMatrix(&lm); return SkLocalMatrixImageFilter::Make(lm, common.getInput(0)); } void SkLocalMatrixImageFilter::flatten(SkWriteBuffer& buffer) const { this->INHERITED::flatten(buffer); buffer.writeMatrix(fLocalM); } sk_sp SkLocalMatrixImageFilter::onFilterImage(SkSpecialImage* source, const Context& ctx, SkIPoint* offset) const { Context localCtx(SkMatrix::Concat(ctx.ctm(), fLocalM), ctx.clipBounds(), ctx.cache(), ctx.outputProperties()); return this->filterInput(0, source, localCtx, offset); } SkIRect SkLocalMatrixImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, MapDirection dir, const SkIRect* inputRect) const { return this->getInput(0)->filterBounds(src, SkMatrix::Concat(ctm, fLocalM), dir, inputRect); }