flightgear/utils/fgqcanvas/fgqcanvasmap.h

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2022-10-20 20:29:11 +08:00
//
// Copyright (C) 2017 James Turner zakalawe@mac.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#ifndef FGQCANVASMAP_H
#define FGQCANVASMAP_H
#include "fgcanvasgroup.h"
class FGQCanvasMap : public FGCanvasGroup
{
public:
FGQCanvasMap(FGCanvasGroup* pr, LocalProp* prop);
protected:
virtual void doPaint(FGCanvasPaintContext* context) const;
virtual bool onChildAdded(LocalProp* prop);
private:
void markProjectionDirty();
private:
double _projectionCenterLat;
double _projectionCenterLon;
double _range;
mutable bool _projectionChanged;
};
#endif // FGQCANVASMAP_H