michael@0: 
michael@0: /*
michael@0:  * Copyright 2006 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: 
michael@0: #include "SkRasterizer.h"
michael@0: #include "SkDraw.h"
michael@0: #include "SkMaskFilter.h"
michael@0: #include "SkPath.h"
michael@0: 
michael@0: bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix,
michael@0:                              const SkIRect* clipBounds, SkMaskFilter* filter,
michael@0:                              SkMask* mask, SkMask::CreateMode mode) const {
michael@0:     SkIRect storage;
michael@0: 
michael@0:     if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode) {
michael@0:         SkIPoint    margin;
michael@0:         SkMask      srcM, dstM;
michael@0: 
michael@0:         srcM.fFormat = SkMask::kA8_Format;
michael@0:         srcM.fBounds.set(0, 0, 1, 1);
michael@0:         srcM.fImage = NULL;
michael@0:         if (!filter->filterMask(&dstM, srcM, matrix, &margin)) {
michael@0:             return false;
michael@0:         }
michael@0:         storage = *clipBounds;
michael@0:         storage.inset(-margin.fX, -margin.fY);
michael@0:         clipBounds = &storage;
michael@0:     }
michael@0: 
michael@0:     return this->onRasterize(fillPath, matrix, clipBounds, mask, mode);
michael@0: }
michael@0: 
michael@0: /*  Our default implementation of the virtual method just scan converts
michael@0: */
michael@0: bool SkRasterizer::onRasterize(const SkPath& fillPath, const SkMatrix& matrix,
michael@0:                              const SkIRect* clipBounds,
michael@0:                              SkMask* mask, SkMask::CreateMode mode) const {
michael@0:     SkPath  devPath;
michael@0: 
michael@0:     fillPath.transform(matrix, &devPath);
michael@0:     return SkDraw::DrawToMask(devPath, clipBounds, NULL, NULL, mask, mode,
michael@0:                               SkPaint::kFill_Style);
michael@0: }