libosgearth-dev 2.5.0+dfsg-8build1 / usr / include / osgEarthQt / TerrainProfileGraph

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/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2013 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
#ifndef OSGEARTHQT_TERRAINPROFILEGRAPH_H
#define OSGEARTHQT_TERRAINPROFILEGRAPH_H 1

#include <osgEarthQt/Actions>
#include <osgEarthQt/Common>
#include <osgEarthQt/DataManager>

#include <osgEarth/Map>
#include <osgEarthUtil/TerrainProfile>

#include <QGraphicsLineItem>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QLineF>
#include <QList>
#include <QMouseEvent>
#include <QRect>
#include <QResizeEvent>


namespace osgEarth { namespace QtGui
{
    using namespace osgEarth::Util;


    struct TerrainProfilePositionCallback : public osg::Referenced
    {
      virtual void updatePosition(double lat, double lon, const std::string& text) { }
      virtual ~TerrainProfilePositionCallback() { }
    };


    /** 
     * Graphics widget that displays the results of an osgEarth::Util::TerrainProfile
     * calculation.
     */
    class OSGEARTHQT_EXPORT TerrainProfileGraph : public QGraphicsView
    {
    Q_OBJECT

    public:
      TerrainProfileGraph(osgEarth::Util::TerrainProfileCalculator* calculator, TerrainProfilePositionCallback* callback=0L);

      virtual ~TerrainProfileGraph();

      void setBackgroundColor(const QColor& color);
      const QColor& getBackgroundColor() { return _backgroundColor; }

      void setFieldColor(const QColor& color);
      const QColor& getFieldColor() { return _fieldColor; }

      void setAxesColor(const QColor& color);
      const QColor& getAxesColor() { return _axesColor; }

      void setGraphColor(const QColor& color);
      const QColor& getGraphColor() { return _graphColor; }

      void setGraphFillColor(const QColor& color);
      const QColor& getGraphFillColor() { return _graphFillColor; }

      void notifyTerrainGraphChanged() { emit onNotifyTerrainGraphChanged(); }

    signals:
      void onNotifyTerrainGraphChanged();

    protected:
      static const int FIELD_Z;
      static const int AXES_Z;
      static const int GRAPH_Z;
      static const int OVERLAY_Z;

      void resizeEvent(QResizeEvent* e);
      void mouseMoveEvent(QMouseEvent* e);
      void mousePressEvent(QMouseEvent* e);
      void mouseReleaseEvent(QMouseEvent* e);

      void redrawGraph();
      void drawAxes(double yMin, double yMax, double yScale, double xMax, QRect &out_field);
      void drawHoverCursor(const QPointF& position);
      void drawSelectionBox(double position);

    private slots:
      void onTerrainGraphChanged();

    private:
      osg::ref_ptr<osgEarth::Util::TerrainProfileCalculator> _calculator;
      osg::ref_ptr<TerrainProfilePositionCallback> _positionCallback;
      osg::ref_ptr<TerrainProfileCalculator::ChangedCallback> _graphChangedCallback;
      QGraphicsScene* _scene;
      QList<QLineF> _graphLines;
      QGraphicsLineItem* _hoverLine;
      QPen _linePen;
      QPen _hoverPen;
      QPen _axesPen;
      QFont _graphFont;
      QColor _backgroundColor;
      QColor _fieldColor;
      QColor _axesColor;
      QColor _graphColor;
      QColor _graphFillColor;
      QRect _graphField;
      double _totalDistance;
      int _graphMinY;
      int _graphMaxY;
      int _graphWidth;
      int _graphHeight;
      bool _selecting;
      double _selectStart;
      double _selectEnd;
    };
} }

#endif // OSGEARTHQT_TERRAINPROFILEGRAPH_H

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