1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/2d/PathRecording.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,134 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef MOZILLA_GFX_PATHRECORDING_H_
1.10 +#define MOZILLA_GFX_PATHRECORDING_H_
1.11 +
1.12 +#include "2D.h"
1.13 +#include <vector>
1.14 +#include <ostream>
1.15 +
1.16 +namespace mozilla {
1.17 +namespace gfx {
1.18 +
1.19 +struct PathOp
1.20 +{
1.21 + enum OpType {
1.22 + OP_MOVETO = 0,
1.23 + OP_LINETO,
1.24 + OP_BEZIERTO,
1.25 + OP_QUADRATICBEZIERTO,
1.26 + OP_CLOSE
1.27 + };
1.28 +
1.29 + OpType mType;
1.30 + Point mP1;
1.31 + Point mP2;
1.32 + Point mP3;
1.33 +};
1.34 +
1.35 +const int32_t sPointCount[] = { 1, 1, 3, 2, 0, 0 };
1.36 +
1.37 +class PathRecording;
1.38 +class DrawEventRecorderPrivate;
1.39 +
1.40 +class PathBuilderRecording : public PathBuilder
1.41 +{
1.42 +public:
1.43 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderRecording)
1.44 + PathBuilderRecording(PathBuilder *aBuilder, FillRule aFillRule)
1.45 + : mPathBuilder(aBuilder), mFillRule(aFillRule)
1.46 + {
1.47 + }
1.48 +
1.49 + /* Move the current point in the path, any figure currently being drawn will
1.50 + * be considered closed during fill operations, however when stroking the
1.51 + * closing line segment will not be drawn.
1.52 + */
1.53 + virtual void MoveTo(const Point &aPoint);
1.54 + /* Add a linesegment to the current figure */
1.55 + virtual void LineTo(const Point &aPoint);
1.56 + /* Add a cubic bezier curve to the current figure */
1.57 + virtual void BezierTo(const Point &aCP1,
1.58 + const Point &aCP2,
1.59 + const Point &aCP3);
1.60 + /* Add a quadratic bezier curve to the current figure */
1.61 + virtual void QuadraticBezierTo(const Point &aCP1,
1.62 + const Point &aCP2);
1.63 + /* Close the current figure, this will essentially generate a line segment
1.64 + * from the current point to the starting point for the current figure
1.65 + */
1.66 + virtual void Close();
1.67 +
1.68 + /* Add an arc to the current figure */
1.69 + virtual void Arc(const Point &, float, float, float, bool) { }
1.70 +
1.71 + /* Point the current subpath is at - or where the next subpath will start
1.72 + * if there is no active subpath.
1.73 + */
1.74 + virtual Point CurrentPoint() const;
1.75 +
1.76 + virtual TemporaryRef<Path> Finish();
1.77 +
1.78 +private:
1.79 + friend class PathRecording;
1.80 +
1.81 + RefPtr<PathBuilder> mPathBuilder;
1.82 + FillRule mFillRule;
1.83 + std::vector<PathOp> mPathOps;
1.84 +};
1.85 +
1.86 +class PathRecording : public Path
1.87 +{
1.88 +public:
1.89 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathRecording)
1.90 + PathRecording(Path *aPath, const std::vector<PathOp> aOps, FillRule aFillRule)
1.91 + : mPath(aPath), mPathOps(aOps), mFillRule(aFillRule)
1.92 + {
1.93 + }
1.94 +
1.95 + ~PathRecording();
1.96 +
1.97 + virtual BackendType GetBackendType() const { return BackendType::RECORDING; }
1.98 + virtual TemporaryRef<PathBuilder> CopyToBuilder(FillRule aFillRule = FillRule::FILL_WINDING) const;
1.99 + virtual TemporaryRef<PathBuilder> TransformedCopyToBuilder(const Matrix &aTransform,
1.100 + FillRule aFillRule = FillRule::FILL_WINDING) const;
1.101 + virtual bool ContainsPoint(const Point &aPoint, const Matrix &aTransform) const
1.102 + { return mPath->ContainsPoint(aPoint, aTransform); }
1.103 + virtual bool StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
1.104 + const Point &aPoint,
1.105 + const Matrix &aTransform) const
1.106 + { return mPath->StrokeContainsPoint(aStrokeOptions, aPoint, aTransform); }
1.107 +
1.108 + virtual Rect GetBounds(const Matrix &aTransform = Matrix()) const
1.109 + { return mPath->GetBounds(aTransform); }
1.110 +
1.111 + virtual Rect GetStrokedBounds(const StrokeOptions &aStrokeOptions,
1.112 + const Matrix &aTransform = Matrix()) const
1.113 + { return mPath->GetStrokedBounds(aStrokeOptions, aTransform); }
1.114 +
1.115 + virtual void StreamToSink(PathSink *aSink) const { mPath->StreamToSink(aSink); }
1.116 +
1.117 + virtual FillRule GetFillRule() const { return mFillRule; }
1.118 +
1.119 + void StorePath(std::ostream &aStream) const;
1.120 + static void ReadPathToBuilder(std::istream &aStream, PathBuilder *aBuilder);
1.121 +
1.122 +private:
1.123 + friend class DrawTargetRecording;
1.124 + friend class RecordedPathCreation;
1.125 +
1.126 + RefPtr<Path> mPath;
1.127 + std::vector<PathOp> mPathOps;
1.128 + FillRule mFillRule;
1.129 +
1.130 + // Event recorders that have this path in their event stream.
1.131 + std::vector<DrawEventRecorderPrivate*> mStoredRecorders;
1.132 +};
1.133 +
1.134 +}
1.135 +}
1.136 +
1.137 +#endif /* MOZILLA_GFX_PATHRECORDING_H_ */
