1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkLocalMatrixImageFilter.h" 9 #include "SkReadBuffer.h" 10 #include "SkString.h" 11 12 SkImageFilter* SkLocalMatrixImageFilter::Create(const SkMatrix& localM, SkImageFilter* input) { 13 if (!input) { 14 return nullptr; 15 } 16 if (localM.getType() & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)) { 17 return nullptr; 18 } 19 if (localM.isIdentity()) { 20 return SkRef(input); 21 } 22 return new SkLocalMatrixImageFilter(localM, input); 23 } 24 25 SkLocalMatrixImageFilter::SkLocalMatrixImageFilter(const SkMatrix& localM, SkImageFilter* input) 26 : INHERITED(1, &input), fLocalM(localM) 27 {} 28 29 SkFlattenable* SkLocalMatrixImageFilter::CreateProc(SkReadBuffer& buffer) { 30 SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); 31 SkMatrix lm; 32 buffer.readMatrix(&lm); 33 return SkLocalMatrixImageFilter::Create(lm, common.getInput(0)); 34 } 35 36 void SkLocalMatrixImageFilter::flatten(SkWriteBuffer& buffer) const { 37 this->INHERITED::flatten(buffer); 38 buffer.writeMatrix(fLocalM); 39 } 40 41 bool SkLocalMatrixImageFilter::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& src, 42 const Context& ctx, 43 SkBitmap* result, SkIPoint* offset) const { 44 Context localCtx(SkMatrix::Concat(ctx.ctm(), fLocalM), ctx.clipBounds(), ctx.cache()); 45 return this->filterInputDeprecated(0, proxy, src, localCtx, result, offset); 46 } 47 48 bool SkLocalMatrixImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& matrix, 49 SkIRect* dst, MapDirection direction) const { 50 return this->getInput(0)->filterBounds(src, SkMatrix::Concat(matrix, fLocalM), dst, direction); 51 } 52 53 #ifndef SK_IGNORE_TO_STRING 54 void SkLocalMatrixImageFilter::toString(SkString* str) const { 55 str->append("SkLocalMatrixImageFilter: ("); 56 str->append(")"); 57 } 58 #endif 59
