gfx/2d/PathAnalysis.h@97036ab72558 (annotated)
gfx/2d/PathAnalysis.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "2D.h" |
| michael@0 | 7 | #include <vector> |
| michael@0 | 8 | |
| michael@0 | 9 | namespace mozilla { |
| michael@0 | 10 | namespace gfx { |
| michael@0 | 11 | |
| michael@0 | 12 | struct FlatPathOp |
| michael@0 | 13 | { |
| michael@0 | 14 | enum OpType { |
| michael@0 | 15 | OP_MOVETO, |
| michael@0 | 16 | OP_LINETO, |
| michael@0 | 17 | }; |
| michael@0 | 18 | |
| michael@0 | 19 | OpType mType; |
| michael@0 | 20 | Point mPoint; |
| michael@0 | 21 | }; |
| michael@0 | 22 | |
| michael@0 | 23 | class FlattenedPath : public PathSink |
| michael@0 | 24 | { |
| michael@0 | 25 | public: |
| michael@0 | 26 | MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(FlattenedPath) |
| michael@0 | 27 | FlattenedPath() : mCachedLength(0) |
| michael@0 | 28 | , mCalculatedLength(false) |
| michael@0 | 29 | { |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | virtual void MoveTo(const Point &aPoint); |
| michael@0 | 33 | virtual void LineTo(const Point &aPoint); |
| michael@0 | 34 | virtual void BezierTo(const Point &aCP1, |
| michael@0 | 35 | const Point &aCP2, |
| michael@0 | 36 | const Point &aCP3); |
| michael@0 | 37 | virtual void QuadraticBezierTo(const Point &aCP1, |
| michael@0 | 38 | const Point &aCP2); |
| michael@0 | 39 | virtual void Close(); |
| michael@0 | 40 | virtual void Arc(const Point &aOrigin, float aRadius, float aStartAngle, |
| michael@0 | 41 | float aEndAngle, bool aAntiClockwise = false); |
| michael@0 | 42 | |
| michael@0 | 43 | virtual Point CurrentPoint() const { return mPathOps.empty() ? Point() : mPathOps[mPathOps.size() - 1].mPoint; } |
| michael@0 | 44 | |
| michael@0 | 45 | Float ComputeLength(); |
| michael@0 | 46 | Point ComputePointAtLength(Float aLength, Point *aTangent); |
| michael@0 | 47 | |
| michael@0 | 48 | private: |
| michael@0 | 49 | Float mCachedLength; |
| michael@0 | 50 | bool mCalculatedLength; |
| michael@0 | 51 | Point mLastMove; |
| michael@0 | 52 | |
| michael@0 | 53 | std::vector<FlatPathOp> mPathOps; |
| michael@0 | 54 | }; |
| michael@0 | 55 | |
| michael@0 | 56 | } |
| michael@0 | 57 | } |
