blob: b6378097bc75b14a987e9b6f94a1131913430ef5 [file] [log] [blame]
* Copyright 2014 The Android Open Source Project
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkMatrixImageFilter_DEFINED
#define SkMatrixImageFilter_DEFINED
#include "include/core/SkFlattenable.h"
#include "include/core/SkMatrix.h"
#include "src/core/SkImageFilter_Base.h"
/*! \class SkMatrixImageFilter
Matrix transformation image filter. This filter draws its source
input transformed by the given matrix.
// TODO(michaelludwig): Once SkCanvas no longer relies on this for handling complex CTMs with
// filters, this class declaration can be hidden in its cpp file, header deleted, and cpp moved
// into src/effects/imagefilters along with all the other image filters.
class SkMatrixImageFilter : public SkImageFilter_Base {
/** Construct a 2D transformation image filter.
* @param transform The matrix to apply when drawing the src bitmap
* @param sampling What sampling technique to apply when scaling.
* @param input The input image filter. If nullptr, the src bitmap
* passed to filterImage() is used instead.
static sk_sp<SkImageFilter> Make(const SkMatrix& transform,
const SkSamplingOptions& sampling,
sk_sp<SkImageFilter> input);
SkRect computeFastBounds(const SkRect&) const override;
SkMatrixImageFilter(const SkMatrix& transform,
const SkSamplingOptions&,
sk_sp<SkImageFilter> input);
void flatten(SkWriteBuffer&) const override;
sk_sp<SkSpecialImage> onFilterImage(const Context&, SkIPoint* offset) const override;
SkIRect onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
MapDirection, const SkIRect* inputRect) const override;
SkMatrix fTransform;
SkSamplingOptions fSampling;
using INHERITED = SkImageFilter_Base;