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 // do nothing for now, since we don't store anything at flatten time 16 SkRasterizer::SkRasterizer(SkFlattenableReadBuffer&) {} 17 18 bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix, 19 const SkIRect* clipBounds, SkMaskFilter* filter, 20 SkMask* mask, SkMask::CreateMode mode) { 21 SkIRect storage; 22 23 if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode) { 24 SkIPoint margin; 25 SkMask srcM, dstM; 26 27 srcM.fFormat = SkMask::kA8_Format; 28 srcM.fBounds.set(0, 0, 1, 1); 29 srcM.fImage = NULL; 30 if (!filter->filterMask(&dstM, srcM, matrix, &margin)) { 31 return false; 32 } 33 storage = *clipBounds; 34 storage.inset(-margin.fX, -margin.fY); 35 clipBounds = &storage; 36 } 37 38 return this->onRasterize(fillPath, matrix, clipBounds, mask, mode); 39 } 40 41 /* Our default implementation of the virtual method just scan converts 42 */ 43 bool SkRasterizer::onRasterize(const SkPath& fillPath, const SkMatrix& matrix, 44 const SkIRect* clipBounds, 45 SkMask* mask, SkMask::CreateMode mode) { 46 SkPath devPath; 47 48 fillPath.transform(matrix, &devPath); 49 return SkDraw::DrawToMask(devPath, clipBounds, NULL, NULL, mask, mode); 50 } 51 52
