| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkBitmap.h" |
| #include "SkComposeImageFilter.h" |
| #include "SkReadBuffer.h" |
| #include "SkWriteBuffer.h" |
| |
| SkComposeImageFilter::~SkComposeImageFilter() { |
| } |
| |
| void SkComposeImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const { |
| SkImageFilter* outer = getInput(0); |
| SkImageFilter* inner = getInput(1); |
| |
| SkRect tmp; |
| inner->computeFastBounds(src, &tmp); |
| outer->computeFastBounds(tmp, dst); |
| } |
| |
| bool SkComposeImageFilter::onFilterImage(Proxy* proxy, |
| const SkBitmap& src, |
| const Context& ctx, |
| SkBitmap* result, |
| SkIPoint* offset) const { |
| SkBitmap tmp; |
| SkIPoint innerOffset = SkIPoint::Make(0, 0); |
| SkIPoint outerOffset = SkIPoint::Make(0, 0); |
| if (!this->filterInput(1, proxy, src, ctx, &tmp, &innerOffset)) |
| return false; |
| |
| SkMatrix outerMatrix(ctx.ctm()); |
| outerMatrix.postTranslate(SkIntToScalar(-innerOffset.x()), SkIntToScalar(-innerOffset.y())); |
| Context outerContext(outerMatrix, ctx.clipBounds(), ctx.cache(), ctx.sizeConstraint()); |
| if (!this->filterInput(0, proxy, tmp, outerContext, result, &outerOffset, false)) { |
| return false; |
| } |
| |
| *offset = innerOffset + outerOffset; |
| return true; |
| } |
| |
| bool SkComposeImageFilter::onFilterBounds(const SkIRect& src, |
| const SkMatrix& ctm, |
| SkIRect* dst) const { |
| SkImageFilter* outer = getInput(0); |
| SkImageFilter* inner = getInput(1); |
| |
| SkIRect tmp; |
| return inner->filterBounds(src, ctm, &tmp) && outer->filterBounds(tmp, ctm, dst); |
| } |
| |
| SkFlattenable* SkComposeImageFilter::CreateProc(SkReadBuffer& buffer) { |
| SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 2); |
| return SkComposeImageFilter::Create(common.getInput(0), common.getInput(1)); |
| } |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkComposeImageFilter::toString(SkString* str) const { |
| SkImageFilter* outer = getInput(0); |
| SkImageFilter* inner = getInput(1); |
| |
| str->appendf("SkComposeImageFilter: ("); |
| |
| str->appendf("outer: "); |
| outer->toString(str); |
| |
| str->appendf("inner: "); |
| inner->toString(str); |
| |
| str->appendf(")"); |
| } |
| #endif |