| /* |
| * 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 "SkLocalMatrixImageFilter.h" |
| #include "SkReadBuffer.h" |
| #include "SkSpecialImage.h" |
| #include "SkString.h" |
| |
| SkImageFilter* SkLocalMatrixImageFilter::Create(const SkMatrix& localM, SkImageFilter* input) { |
| if (!input) { |
| return nullptr; |
| } |
| if (localM.getType() & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)) { |
| return nullptr; |
| } |
| if (localM.isIdentity()) { |
| return SkRef(input); |
| } |
| return new SkLocalMatrixImageFilter(localM, input); |
| } |
| |
| SkLocalMatrixImageFilter::SkLocalMatrixImageFilter(const SkMatrix& localM, SkImageFilter* input) |
| : INHERITED(1, &input) |
| , fLocalM(localM) { |
| } |
| |
| SkFlattenable* SkLocalMatrixImageFilter::CreateProc(SkReadBuffer& buffer) { |
| SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); |
| SkMatrix lm; |
| buffer.readMatrix(&lm); |
| return SkLocalMatrixImageFilter::Create(lm, common.getInput(0)); |
| } |
| |
| void SkLocalMatrixImageFilter::flatten(SkWriteBuffer& buffer) const { |
| this->INHERITED::flatten(buffer); |
| buffer.writeMatrix(fLocalM); |
| } |
| |
| sk_sp<SkSpecialImage> SkLocalMatrixImageFilter::onFilterImage(SkSpecialImage* source, |
| const Context& ctx, |
| SkIPoint* offset) const { |
| Context localCtx(SkMatrix::Concat(ctx.ctm(), fLocalM), ctx.clipBounds(), ctx.cache()); |
| return this->filterInput(0, source, localCtx, offset); |
| } |
| |
| SkIRect SkLocalMatrixImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& matrix, |
| MapDirection direction) const { |
| return this->getInput(0)->filterBounds(src, SkMatrix::Concat(matrix, fLocalM), direction); |
| } |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkLocalMatrixImageFilter::toString(SkString* str) const { |
| str->append("SkLocalMatrixImageFilter: ("); |
| str->append(")"); |
| } |
| #endif |