зеркало из https://github.com/mozilla/gecko-dev.git
143 строки
4.5 KiB
C++
143 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_PATHRECORDING_H_
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#define MOZILLA_GFX_PATHRECORDING_H_
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#include "2D.h"
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#include <vector>
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#include <ostream>
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#include "PathHelpers.h"
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namespace mozilla {
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namespace gfx {
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struct PathOp
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{
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enum OpType {
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OP_MOVETO = 0,
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OP_LINETO,
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OP_BEZIERTO,
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OP_QUADRATICBEZIERTO,
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OP_CLOSE
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};
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OpType mType;
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Point mP1;
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Point mP2;
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Point mP3;
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};
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const int32_t sPointCount[] = { 1, 1, 3, 2, 0, 0 };
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class PathRecording;
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class DrawEventRecorderPrivate;
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class PathBuilderRecording : public PathBuilder
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{
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderRecording)
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PathBuilderRecording(PathBuilder *aBuilder, FillRule aFillRule)
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: mPathBuilder(aBuilder), mFillRule(aFillRule)
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{
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}
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/* Move the current point in the path, any figure currently being drawn will
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* be considered closed during fill operations, however when stroking the
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* closing line segment will not be drawn.
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*/
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virtual void MoveTo(const Point &aPoint);
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/* Add a linesegment to the current figure */
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virtual void LineTo(const Point &aPoint);
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/* Add a cubic bezier curve to the current figure */
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virtual void BezierTo(const Point &aCP1,
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const Point &aCP2,
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const Point &aCP3);
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/* Add a quadratic bezier curve to the current figure */
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virtual void QuadraticBezierTo(const Point &aCP1,
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const Point &aCP2);
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/* Close the current figure, this will essentially generate a line segment
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* from the current point to the starting point for the current figure
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*/
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virtual void Close();
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/* Add an arc to the current figure */
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virtual void Arc(const Point &aOrigin, float aRadius, float aStartAngle,
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float aEndAngle, bool aAntiClockwise) {
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ArcToBezier(this, aOrigin, Size(aRadius, aRadius), aStartAngle, aEndAngle,
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aAntiClockwise);
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}
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/* Point the current subpath is at - or where the next subpath will start
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* if there is no active subpath.
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*/
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virtual Point CurrentPoint() const;
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virtual already_AddRefed<Path> Finish();
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virtual BackendType GetBackendType() const { return BackendType::RECORDING; }
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private:
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friend class PathRecording;
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RefPtr<PathBuilder> mPathBuilder;
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FillRule mFillRule;
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std::vector<PathOp> mPathOps;
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};
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class PathRecording : public Path
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{
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathRecording)
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PathRecording(Path *aPath, const std::vector<PathOp> aOps, FillRule aFillRule)
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: mPath(aPath), mPathOps(aOps), mFillRule(aFillRule)
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{
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}
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~PathRecording();
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virtual BackendType GetBackendType() const { return BackendType::RECORDING; }
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virtual already_AddRefed<PathBuilder> CopyToBuilder(FillRule aFillRule) const;
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virtual already_AddRefed<PathBuilder> TransformedCopyToBuilder(const Matrix &aTransform,
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FillRule aFillRule) const;
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virtual bool ContainsPoint(const Point &aPoint, const Matrix &aTransform) const
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{ return mPath->ContainsPoint(aPoint, aTransform); }
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virtual bool StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
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const Point &aPoint,
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const Matrix &aTransform) const
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{ return mPath->StrokeContainsPoint(aStrokeOptions, aPoint, aTransform); }
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virtual Rect GetBounds(const Matrix &aTransform = Matrix()) const
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{ return mPath->GetBounds(aTransform); }
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virtual Rect GetStrokedBounds(const StrokeOptions &aStrokeOptions,
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const Matrix &aTransform = Matrix()) const
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{ return mPath->GetStrokedBounds(aStrokeOptions, aTransform); }
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virtual void StreamToSink(PathSink *aSink) const { mPath->StreamToSink(aSink); }
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virtual FillRule GetFillRule() const { return mFillRule; }
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void StorePath(std::ostream &aStream) const;
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static void ReadPathToBuilder(std::istream &aStream, PathBuilder *aBuilder);
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private:
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friend class DrawTargetRecording;
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friend class RecordedPathCreation;
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RefPtr<Path> mPath;
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std::vector<PathOp> mPathOps;
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FillRule mFillRule;
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// Event recorders that have this path in their event stream.
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std::vector<RefPtr<DrawEventRecorderPrivate>> mStoredRecorders;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif /* MOZILLA_GFX_PATHRECORDING_H_ */
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