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/*
* 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 "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);
}
bool SkLocalMatrixImageFilter::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& src,
const Context& ctx,
SkBitmap* result, SkIPoint* offset) const {
Context localCtx(SkMatrix::Concat(ctx.ctm(), fLocalM), ctx.clipBounds(), ctx.cache());
return this->filterInputDeprecated(0, proxy, src, localCtx, result, 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
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