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