| /* |
| * Copyright 2012 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. |
| */ |
| |
| #include "SkOffsetImageFilter.h" |
| #include "SkBitmap.h" |
| #include "SkMatrix.h" |
| #include "SkFlattenableBuffers.h" |
| |
| bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source, |
| const SkMatrix& matrix, |
| SkBitmap* result, |
| SkIPoint* loc) { |
| SkBitmap src = source; |
| if (getInput(0) && !getInput(0)->filterImage(proxy, source, matrix, &src, loc)) { |
| return false; |
| } |
| |
| SkVector vec; |
| matrix.mapVectors(&vec, &fOffset, 1); |
| |
| loc->fX += SkScalarRoundToInt(vec.fX); |
| loc->fY += SkScalarRoundToInt(vec.fY); |
| *result = src; |
| return true; |
| } |
| |
| bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, |
| SkIRect* dst) { |
| SkVector vec; |
| ctm.mapVectors(&vec, &fOffset, 1); |
| |
| *dst = src; |
| dst->offset(SkScalarRoundToInt(vec.fX), SkScalarRoundToInt(vec.fY)); |
| return true; |
| } |
| |
| void SkOffsetImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| this->INHERITED::flatten(buffer); |
| buffer.writePoint(fOffset); |
| } |
| |
| SkOffsetImageFilter::SkOffsetImageFilter(SkScalar dx, SkScalar dy, |
| SkImageFilter* input) : INHERITED(input) { |
| fOffset.set(dx, dy); |
| } |
| |
| SkOffsetImageFilter::SkOffsetImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| buffer.readPoint(&fOffset); |
| } |