| /* libs/graphics/sgl/SkMaskFilter.cpp |
| ** |
| ** Copyright 2006, Google Inc. |
| ** |
| ** 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 "SkMaskFilter.h" |
| #include "SkBlitter.h" |
| #include "SkBounder.h" |
| #include "SkBuffer.h" |
| #include "SkDraw.h" |
| #include "SkRegion.h" |
| |
| size_t SkMask::computeImageSize() const |
| { |
| return fBounds.height() * fRowBytes; |
| } |
| |
| size_t SkMask::computeTotalImageSize() const |
| { |
| size_t size = this->computeImageSize(); |
| |
| if (fFormat == SkMask::k3D_Format) |
| size *= 3; |
| return size; |
| } |
| |
| uint8_t* SkMask::AllocImage(size_t size) |
| { |
| return (uint8_t*)sk_malloc_throw(SkAlign4(size)); |
| } |
| |
| void SkMask::FreeImage(uint8_t* image) |
| { |
| sk_free(image); |
| } |
| |
| bool SkMaskFilter::filterMask(SkMask*, const SkMask&, const SkMatrix&, SkPoint16*) |
| { |
| return false; |
| } |
| |
| bool SkMaskFilter::filterPath(const SkPath& devPath, const SkMatrix& matrix, |
| const SkRegion& clip, SkBounder* bounder, |
| SkBlitter* blitter) |
| { |
| SkMask srcM, dstM; |
| |
| if (!SkDraw::DrawToMask(devPath, &clip.getBounds(), this, &matrix, &srcM, |
| SkMask::kComputeBoundsAndRenderImage_CreateMode)) |
| { |
| return false; |
| } |
| |
| SkAutoMaskImage autoSrc(&srcM, false); |
| |
| if (!this->filterMask(&dstM, srcM, matrix, NULL)) |
| return false; |
| |
| SkAutoMaskImage autoDst(&dstM, false); |
| SkRegion::Cliperator clipper(clip, dstM.fBounds); |
| |
| if (!clipper.done() && (bounder == NULL || bounder->doIRect(dstM.fBounds, clip))) |
| { |
| const SkRect16& cr = clipper.rect(); |
| do { |
| blitter->blitMask(dstM, cr); |
| clipper.next(); |
| } while (!clipper.done()); |
| } |
| |
| return true; |
| } |
| |
| |