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/* libs/graphics/sgl/SkRasterizer.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "SkRasterizer.h"
#include "SkDraw.h"
#include "SkMaskFilter.h"
#include "SkPath.h"
// do nothing for now, since we don't store anything at flatten time
SkRasterizer::SkRasterizer(SkFlattenableReadBuffer&) {}
bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix,
const SkIRect* clipBounds, SkMaskFilter* filter,
SkMask* mask, SkMask::CreateMode mode)
{
SkIRect storage;
if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode)
{
SkIPoint margin;
SkMask srcM, dstM;
srcM.fFormat = SkMask::kA8_Format;
srcM.fBounds.set(0, 0, 1, 1);
srcM.fImage = NULL;
if (!filter->filterMask(&dstM, srcM, matrix, &margin))
return false;
storage = *clipBounds;
storage.inset(-margin.fX, -margin.fY);
clipBounds = &storage;
}
return this->onRasterize(fillPath, matrix, clipBounds, mask, mode);
}
/* Our default implementation of the virtual method just scan converts
*/
bool SkRasterizer::onRasterize(const SkPath& fillPath, const SkMatrix& matrix,
const SkIRect* clipBounds,
SkMask* mask, SkMask::CreateMode mode)
{
SkPath devPath;
fillPath.transform(matrix, &devPath);
return SkDraw::DrawToMask(devPath, clipBounds, NULL, NULL, mask, mode);
}
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