gfx/2d/PathRecording.h@97036ab72558 (annotated)
gfx/2d/PathRecording.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 | #ifndef MOZILLA_GFX_PATHRECORDING_H_ |
| michael@0 | 7 | #define MOZILLA_GFX_PATHRECORDING_H_ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "2D.h" |
| michael@0 | 10 | #include <vector> |
| michael@0 | 11 | #include <ostream> |
| michael@0 | 12 | |
| michael@0 | 13 | namespace mozilla { |
| michael@0 | 14 | namespace gfx { |
| michael@0 | 15 | |
| michael@0 | 16 | struct PathOp |
| michael@0 | 17 | { |
| michael@0 | 18 | enum OpType { |
| michael@0 | 19 | OP_MOVETO = 0, |
| michael@0 | 20 | OP_LINETO, |
| michael@0 | 21 | OP_BEZIERTO, |
| michael@0 | 22 | OP_QUADRATICBEZIERTO, |
| michael@0 | 23 | OP_CLOSE |
| michael@0 | 24 | }; |
| michael@0 | 25 | |
| michael@0 | 26 | OpType mType; |
| michael@0 | 27 | Point mP1; |
| michael@0 | 28 | Point mP2; |
| michael@0 | 29 | Point mP3; |
| michael@0 | 30 | }; |
| michael@0 | 31 | |
| michael@0 | 32 | const int32_t sPointCount[] = { 1, 1, 3, 2, 0, 0 }; |
| michael@0 | 33 | |
| michael@0 | 34 | class PathRecording; |
| michael@0 | 35 | class DrawEventRecorderPrivate; |
| michael@0 | 36 | |
| michael@0 | 37 | class PathBuilderRecording : public PathBuilder |
| michael@0 | 38 | { |
| michael@0 | 39 | public: |
| michael@0 | 40 | MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderRecording) |
| michael@0 | 41 | PathBuilderRecording(PathBuilder *aBuilder, FillRule aFillRule) |
| michael@0 | 42 | : mPathBuilder(aBuilder), mFillRule(aFillRule) |
| michael@0 | 43 | { |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | /* Move the current point in the path, any figure currently being drawn will |
| michael@0 | 47 | * be considered closed during fill operations, however when stroking the |
| michael@0 | 48 | * closing line segment will not be drawn. |
| michael@0 | 49 | */ |
| michael@0 | 50 | virtual void MoveTo(const Point &aPoint); |
| michael@0 | 51 | /* Add a linesegment to the current figure */ |
| michael@0 | 52 | virtual void LineTo(const Point &aPoint); |
| michael@0 | 53 | /* Add a cubic bezier curve to the current figure */ |
| michael@0 | 54 | virtual void BezierTo(const Point &aCP1, |
| michael@0 | 55 | const Point &aCP2, |
| michael@0 | 56 | const Point &aCP3); |
| michael@0 | 57 | /* Add a quadratic bezier curve to the current figure */ |
| michael@0 | 58 | virtual void QuadraticBezierTo(const Point &aCP1, |
| michael@0 | 59 | const Point &aCP2); |
| michael@0 | 60 | /* Close the current figure, this will essentially generate a line segment |
| michael@0 | 61 | * from the current point to the starting point for the current figure |
| michael@0 | 62 | */ |
| michael@0 | 63 | virtual void Close(); |
| michael@0 | 64 | |
| michael@0 | 65 | /* Add an arc to the current figure */ |
| michael@0 | 66 | virtual void Arc(const Point &, float, float, float, bool) { } |
| michael@0 | 67 | |
| michael@0 | 68 | /* Point the current subpath is at - or where the next subpath will start |
| michael@0 | 69 | * if there is no active subpath. |
| michael@0 | 70 | */ |
| michael@0 | 71 | virtual Point CurrentPoint() const; |
| michael@0 | 72 | |
| michael@0 | 73 | virtual TemporaryRef<Path> Finish(); |
| michael@0 | 74 | |
| michael@0 | 75 | private: |
| michael@0 | 76 | friend class PathRecording; |
| michael@0 | 77 | |
| michael@0 | 78 | RefPtr<PathBuilder> mPathBuilder; |
| michael@0 | 79 | FillRule mFillRule; |
| michael@0 | 80 | std::vector<PathOp> mPathOps; |
| michael@0 | 81 | }; |
| michael@0 | 82 | |
| michael@0 | 83 | class PathRecording : public Path |
| michael@0 | 84 | { |
| michael@0 | 85 | public: |
| michael@0 | 86 | MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathRecording) |
| michael@0 | 87 | PathRecording(Path *aPath, const std::vector<PathOp> aOps, FillRule aFillRule) |
| michael@0 | 88 | : mPath(aPath), mPathOps(aOps), mFillRule(aFillRule) |
| michael@0 | 89 | { |
| michael@0 | 90 | } |
| michael@0 | 91 | |
| michael@0 | 92 | ~PathRecording(); |
| michael@0 | 93 | |
| michael@0 | 94 | virtual BackendType GetBackendType() const { return BackendType::RECORDING; } |
| michael@0 | 95 | virtual TemporaryRef<PathBuilder> CopyToBuilder(FillRule aFillRule = FillRule::FILL_WINDING) const; |
| michael@0 | 96 | virtual TemporaryRef<PathBuilder> TransformedCopyToBuilder(const Matrix &aTransform, |
| michael@0 | 97 | FillRule aFillRule = FillRule::FILL_WINDING) const; |
| michael@0 | 98 | virtual bool ContainsPoint(const Point &aPoint, const Matrix &aTransform) const |
| michael@0 | 99 | { return mPath->ContainsPoint(aPoint, aTransform); } |
| michael@0 | 100 | virtual bool StrokeContainsPoint(const StrokeOptions &aStrokeOptions, |
| michael@0 | 101 | const Point &aPoint, |
| michael@0 | 102 | const Matrix &aTransform) const |
| michael@0 | 103 | { return mPath->StrokeContainsPoint(aStrokeOptions, aPoint, aTransform); } |
| michael@0 | 104 | |
| michael@0 | 105 | virtual Rect GetBounds(const Matrix &aTransform = Matrix()) const |
| michael@0 | 106 | { return mPath->GetBounds(aTransform); } |
| michael@0 | 107 | |
| michael@0 | 108 | virtual Rect GetStrokedBounds(const StrokeOptions &aStrokeOptions, |
| michael@0 | 109 | const Matrix &aTransform = Matrix()) const |
| michael@0 | 110 | { return mPath->GetStrokedBounds(aStrokeOptions, aTransform); } |
| michael@0 | 111 | |
| michael@0 | 112 | virtual void StreamToSink(PathSink *aSink) const { mPath->StreamToSink(aSink); } |
| michael@0 | 113 | |
| michael@0 | 114 | virtual FillRule GetFillRule() const { return mFillRule; } |
| michael@0 | 115 | |
| michael@0 | 116 | void StorePath(std::ostream &aStream) const; |
| michael@0 | 117 | static void ReadPathToBuilder(std::istream &aStream, PathBuilder *aBuilder); |
| michael@0 | 118 | |
| michael@0 | 119 | private: |
| michael@0 | 120 | friend class DrawTargetRecording; |
| michael@0 | 121 | friend class RecordedPathCreation; |
| michael@0 | 122 | |
| michael@0 | 123 | RefPtr<Path> mPath; |
| michael@0 | 124 | std::vector<PathOp> mPathOps; |
| michael@0 | 125 | FillRule mFillRule; |
| michael@0 | 126 | |
| michael@0 | 127 | // Event recorders that have this path in their event stream. |
| michael@0 | 128 | std::vector<DrawEventRecorderPrivate*> mStoredRecorders; |
| michael@0 | 129 | }; |
| michael@0 | 130 | |
| michael@0 | 131 | } |
| michael@0 | 132 | } |
| michael@0 | 133 | |
| michael@0 | 134 | #endif /* MOZILLA_GFX_PATHRECORDING_H_ */ |
