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      1 
      2 /*
      3  * Copyright 2006 The Android Open Source Project
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 
     10 #include "SkRasterizer.h"
     11 #include "SkDraw.h"
     12 #include "SkMaskFilter.h"
     13 #include "SkPath.h"
     14 
     15 bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix,
     16                              const SkIRect* clipBounds, SkMaskFilter* filter,
     17                              SkMask* mask, SkMask::CreateMode mode) const {
     18     SkIRect storage;
     19 
     20     if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode) {
     21         SkIPoint    margin;
     22         SkMask      srcM, dstM;
     23 
     24         srcM.fFormat = SkMask::kA8_Format;
     25         srcM.fBounds.set(0, 0, 1, 1);
     26         srcM.fImage = NULL;
     27         if (!filter->filterMask(&dstM, srcM, matrix, &margin)) {
     28             return false;
     29         }
     30         storage = *clipBounds;
     31         storage.inset(-margin.fX, -margin.fY);
     32         clipBounds = &storage;
     33     }
     34 
     35     return this->onRasterize(fillPath, matrix, clipBounds, mask, mode);
     36 }
     37 
     38 /*  Our default implementation of the virtual method just scan converts
     39 */
     40 bool SkRasterizer::onRasterize(const SkPath& fillPath, const SkMatrix& matrix,
     41                              const SkIRect* clipBounds,
     42                              SkMask* mask, SkMask::CreateMode mode) const {
     43     SkPath  devPath;
     44 
     45     fillPath.transform(matrix, &devPath);
     46     return SkDraw::DrawToMask(devPath, clipBounds, NULL, NULL, mask, mode,
     47                               SkPaint::kFill_Style);
     48 }
     49