mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-14 02:31:59 +00:00
c44ff5af9a
Because of the way the canvas 2D implementation juggles between path builders and paths, we have to keep track of current and first points in the path, in case a builder is created out of it. Differential Revision: https://phabricator.services.mozilla.com/D33757 --HG-- extra : source : c79b3af2395894b449731fccdd9eb006b4d0189e
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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/. */
|
|
|
|
#include "2D.h"
|
|
#include <vector>
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
struct FlatPathOp {
|
|
enum OpType {
|
|
OP_MOVETO,
|
|
OP_LINETO,
|
|
};
|
|
|
|
OpType mType;
|
|
Point mPoint;
|
|
};
|
|
|
|
class FlattenedPath : public PathSink {
|
|
public:
|
|
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(FlattenedPath, override)
|
|
|
|
FlattenedPath() : mCachedLength(0), mCalculatedLength(false) {}
|
|
|
|
virtual void MoveTo(const Point& aPoint) override;
|
|
virtual void LineTo(const Point& aPoint) override;
|
|
virtual void BezierTo(const Point& aCP1, const Point& aCP2,
|
|
const Point& aCP3) override;
|
|
virtual void QuadraticBezierTo(const Point& aCP1, const Point& aCP2) override;
|
|
virtual void Close() override;
|
|
virtual void Arc(const Point& aOrigin, float aRadius, float aStartAngle,
|
|
float aEndAngle, bool aAntiClockwise = false) override;
|
|
|
|
virtual Point CurrentPoint() const override {
|
|
return mPathOps.empty() ? Point() : mPathOps[mPathOps.size() - 1].mPoint;
|
|
}
|
|
|
|
Float ComputeLength();
|
|
Point ComputePointAtLength(Float aLength, Point* aTangent);
|
|
|
|
private:
|
|
Float mCachedLength;
|
|
bool mCalculatedLength;
|
|
|
|
std::vector<FlatPathOp> mPathOps;
|
|
};
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|