libosgearth-dev 2.5.0+dfsg-2+b2 / usr / include / osgEarthQt / AnnotationDialogs

/* -*-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_ANNOTATIONDIALOGS_H
#define OSGEARTHQT_ANNOTATIONDIALOGS_H 1

#include <osgEarthQt/Common>

#include <osgEarth/Draggers>
#include <osgEarth/GeoMath>
#include <osgEarthAnnotation/AnnotationEditing>
#include <osgEarthAnnotation/EllipseNode>
#include <osgEarthAnnotation/FeatureNode>
#include <osgEarthAnnotation/PlaceNode>
#include <osgEarthFeatures/Feature>
#include <osgEarthSymbology/Geometry>

#include <QCheckBox>
#include <QDialog>
#include <QLineEdit>
#include <QPushButton>
#include <QVBoxLayout>


namespace osgEarth { namespace QtGui
{
  struct AddPointsMouseHandler;
  struct PointDraggerCallback;
  class BaseAnnotationDialog : public QDialog
  {
    Q_OBJECT
      
  public:
    BaseAnnotationDialog(osgEarth::MapNode* mapNode, const ViewVector& views, QWidget* parent = 0, Qt::WindowFlags f = 0);

    std::string getName() { return _nameEdit ? _nameEdit->text().toStdString() : ""; }
    std::string getDescription() { return _descriptionEdit ? _descriptionEdit->text().toStdString() : ""; }
    virtual osgEarth::Annotation::AnnotationNode* getAnnotation() = 0;

    virtual void mapMouseClick(const osgEarth::GeoPoint& point, int button) { };
    virtual void mapMouseMove(const osgEarth::GeoPoint& point) { };

  protected:
    void initDefaultUi();
    void updateButtonColorStyle(QPushButton* button, const QColor& color);

    virtual void movePoint(int index, const osgEarth::GeoPoint& position) { };

    osg::ref_ptr<osgEarth::MapNode> _mapNode;
    ViewVector _views;
    QLineEdit* _nameEdit;
    QLineEdit* _descriptionEdit;
    QVBoxLayout* _customLayout;
    QPushButton* _okButton;

    friend struct AddPointsMouseHandler;
    friend struct PointDraggerCallback;
  };

  //---------------------------------------------------------------------------

  class OSGEARTHQT_EXPORT AddMarkerDialog : public BaseAnnotationDialog
  {
    Q_OBJECT

  public:
    AddMarkerDialog(osg::Group* root, osgEarth::MapNode* mapNode, const ViewVector& views, osgEarth::Annotation::PlaceNode* marker=0, QWidget* parent = 0, Qt::WindowFlags f = 0);

    osgEarth::Annotation::AnnotationNode* getAnnotation() { return _placeNode.get(); }

    void mapMouseClick(const osgEarth::GeoPoint& point, int button);

  public slots:
    void accept();
    void reject();

  private slots:
    void onNameCheckStateChanged(int state);
    void onNameTextChanged(const QString& text);

  protected:
    void closeEvent(QCloseEvent* event);

    void initialize();
    void clearDisplay();
    void resetValues();

    osg::ref_ptr<osg::Group> _root;
    osg::ref_ptr<osgGA::GUIEventHandler>  _guiHandler;
    QCheckBox* _nameCheckbox;
    osg::ref_ptr<osg::Image> _markerImage;
    osgEarth::Symbology::Style _placeStyle;
    osg::ref_ptr<osgEarth::Annotation::PlaceNode> _placeNode;
    std::string _altName;
    bool _editing;
    osgEarth::GeoPoint _inPosition;
    std::string _inName;
    std::string _inDescription;
    bool _inNameSet;
  };

  //---------------------------------------------------------------------------

  class OSGEARTHQT_EXPORT AddPathDialog : public BaseAnnotationDialog
  {
    Q_OBJECT

  public:
    AddPathDialog(osg::Group* root, osgEarth::MapNode* mapNode, const ViewVector& views, osgEarth::Annotation::FeatureNode* path=0L, QWidget* parent = 0, Qt::WindowFlags f = 0);

    osgEarth::Annotation::AnnotationNode* getAnnotation() { return _pathNode.get(); }

    void mapMouseClick(const osgEarth::GeoPoint& point, int button);
    void addPoint(const osgEarth::GeoPoint& point);

  public slots:
    void accept();
    void reject();

  private slots:
    void onDrapeCheckStateChanged(int state);
    void onLineColorButtonClicked();

  protected:
    void closeEvent(QCloseEvent* event);

    void initialize();
    void refreshFeatureNode();
    void createPointDragger(int index, const osgEarth::GeoPoint& point);
    void movePoint(int index, const osgEarth::GeoPoint& position);
    void clearDisplay();
    void resetValues();

    osg::ref_ptr<osg::Group> _root;
    osg::Group* _draggers;
    osg::ref_ptr<AddPointsMouseHandler>  _guiHandler;
    QCheckBox* _drapeCheckbox;
    QPushButton* _lineColorButton;
    osg::Vec4f _pathColor;
    osg::ref_ptr<osgEarth::Symbology::LineString> _pathLine;
    osg::ref_ptr<osgEarth::Features::Feature> _pathFeature;
    osg::ref_ptr<osgEarth::Annotation::FeatureNode> _pathNode;
    bool _editing;
    osg::ref_ptr<osgEarth::Features::Feature> _inFeature;
    std::string _inName;
    std::string _inDescription;
  };

  //---------------------------------------------------------------------------

  class OSGEARTHQT_EXPORT AddPolygonDialog : public BaseAnnotationDialog
  {
    Q_OBJECT

  public:
    AddPolygonDialog(osg::Group* root, osgEarth::MapNode* mapNode, const ViewVector& views, osgEarth::Annotation::FeatureNode* polygon=0L, QWidget* parent = 0, Qt::WindowFlags f = 0);

    osgEarth::Annotation::AnnotationNode* getAnnotation() { return _polyNode.get(); }

    void mapMouseClick(const osgEarth::GeoPoint& point, int button);
    void mapMouseMove(const osgEarth::GeoPoint& point);
    void addPoint(const osgEarth::GeoPoint& point);

  public slots:
    void accept();
    void reject();

  private slots:
    void onDrapeCheckStateChanged(int state);
    void onLineColorButtonClicked();
    void onFillColorButtonClicked();

  protected:
    void closeEvent(QCloseEvent* event);

    void initialize();
    void refreshFeatureNode(bool geometryOnly=false);
    void createPointDragger(int index, const osgEarth::GeoPoint& point);
    void movePoint(int index, const osgEarth::GeoPoint& position);
    void clearDisplay();
    void resetValues();

    osg::ref_ptr<osg::Group> _root;
    osg::Group* _draggers;
    osg::ref_ptr<AddPointsMouseHandler>  _guiHandler;
    QCheckBox* _drapeCheckbox;
    QPushButton* _lineColorButton;
    QPushButton* _fillColorButton;
    osg::Vec4f _pathColor;
    osg::Vec4f _fillColor;
    osg::Vec3d _mousePoint;
    osg::ref_ptr<osgEarth::Symbology::Polygon> _polygon;
    osg::ref_ptr<osgEarth::Features::Feature> _polyFeature;
    osg::ref_ptr<osgEarth::Annotation::FeatureNode> _polyNode;
    bool _editing;
    osg::ref_ptr<osgEarth::Features::Feature> _inFeature;
    std::string _inName;
    std::string _inDescription;
  };

  //---------------------------------------------------------------------------

  struct AddEllipseMouseHandler;
  class OSGEARTHQT_EXPORT AddEllipseDialog : public BaseAnnotationDialog
  {
    Q_OBJECT

  public:
    AddEllipseDialog(osg::Group* root, osgEarth::MapNode* mapNode, const ViewVector& views, osgEarth::Annotation::EllipseNode* ellipse=0, QWidget* parent = 0, Qt::WindowFlags f = 0);

    osgEarth::Annotation::AnnotationNode* getAnnotation() { return _ellipseNode.get(); }

    void addEllipse(const osgEarth::GeoPoint& position, const Linear& radiusMajor, const Linear& radiusMinor, const Angular& rotationAngle);

  public slots:
    void accept();
    void reject();

  private slots:
    void onDrapeCheckStateChanged(int state);
    void onLineColorButtonClicked();
    void onFillColorButtonClicked();

  protected:
    void closeEvent(QCloseEvent* event);

    void initialize();
    void refreshFeatureNode(bool geometryOnly=false);
    void clearDisplay();
    void resetValues();
    void removeGuiHandlers();

    osg::ref_ptr<osg::Group> _root;
    osg::ref_ptr<AddEllipseMouseHandler>  _guiHandler;
    osg::ref_ptr<osgEarth::Annotation::EllipseNodeEditor> _editor;
    QCheckBox* _drapeCheckbox;
    QPushButton* _lineColorButton;
    QPushButton* _fillColorButton;
    osg::Vec4f _pathColor;
    osg::Vec4f _fillColor;
    osg::ref_ptr<osgEarth::Annotation::EllipseNode> _ellipseNode;
    osgEarth::Symbology::Style _ellipseStyle;
    bool _editing;
    osgEarth::Symbology::Style _inStyle;
    std::string _inName;
    std::string _inDescription;
    osgEarth::GeoPoint _inPosition;
    Linear _inRadiusMajor;
    Linear _inRadiusMinor;
    Angular _inRotationAngle;

    friend struct AddEllipseMouseHandler;
  }; 

  //---------------------------------------------------------------------------

  struct AddPointsMouseHandler : public osgGA::GUIEventHandler
  {
    AddPointsMouseHandler(BaseAnnotationDialog* dialog, osgEarth::MapNode* mapNode, osg::Group* root, bool drawLead=true)
      : _dialog(dialog), _mapNode(mapNode), _root(root), _drawLead(drawLead), _mouseDown(-1), _lastPoint(-500.0, 0.0, 0.0)
    {
      if (_drawLead)
      {
        //Define a style for the lead line
        osgEarth::Symbology::LineSymbol* ls = _lineStyle.getOrCreateSymbol<osgEarth::Symbology::LineSymbol>();
        ls->stroke()->color() = osgEarth::Symbology::Color::White;
        ls->stroke()->width() = 2.0f;
        ls->stroke()->stipple() = 0x0F0F;
        ls->tessellation() = 20;
        _lineStyle.getOrCreate<osgEarth::Symbology::AltitudeSymbol>()->clamping() = osgEarth::Symbology::AltitudeSymbol::CLAMP_TO_TERRAIN;
        _lineStyle.getOrCreate<osgEarth::Symbology::AltitudeSymbol>()->technique() = osgEarth::Symbology::AltitudeSymbol::TECHNIQUE_GPU;
      }
    }

    bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa )
    {
      osgViewer::View* view = static_cast<osgViewer::View*>(aa.asView());

      if ( ea.getEventType() == osgGA::GUIEventAdapter::PUSH  && _mouseDown == -1)
      {
        _mouseDown = ea.getButton();
        _xDown = ea.getX();
        _yDown = ea.getY();
      }
      else if (ea.getEventType() == osgGA::GUIEventAdapter::MOVE && _lastPoint.x() != -500.0)
      {
        osg::Vec3d world;
        if (_mapNode->getTerrain()->getWorldCoordsUnderMouse(aa.asView(), ea.getX(), ea.getY(), world))
        {
          osgEarth::GeoPoint mapPoint;
          mapPoint.fromWorld( _mapNode->getMapSRS(), world );
          //_mapNode->getMap()->worldPointToMapPoint(world, mapPoint);

          _dialog->mapMouseMove(mapPoint);

          _currentPoint = mapPoint.vec3d();
          updateDisplay();
        }
      }
      else if (ea.getEventType() == osgGA::GUIEventAdapter::RELEASE)
      {
        if (ea.getButton() == _mouseDown)
        {
          if (_xDown == ea.getX() && _yDown == ea.getY())
          {
            osg::Vec3d world;
            if (_mapNode->getTerrain()->getWorldCoordsUnderMouse(aa.asView(), ea.getX(), ea.getY(), world))
            {
              osgEarth::GeoPoint mapPoint;
              mapPoint.fromWorld( _mapNode->getMapSRS(), world );
              //_mapNode->getMap()->worldPointToMapPoint( world, mapPoint );
              _currentPoint = mapPoint.vec3d();
              _lastPoint = mapPoint.vec3d();
              
              _dialog->mapMouseClick(mapPoint, _mouseDown);

              updateDisplay();
            }
          }

          _mouseDown = -1;
        }
      }
      else if (ea.getEventType() == osgGA::GUIEventAdapter::DOUBLECLICK)
      {
        QMetaObject::invokeMethod(_dialog, "accept", Qt::QueuedConnection);
        return true;
      }

      return false;
    }

    void clearDisplay()
    {
      _lastPoint.x() = -500.0;

      if (_featureNode.valid() && _root.valid())
      {
        _root->removeChild( _featureNode.get() );
        _featureNode = 0L;
      }
    }

    void updateDisplay()
    {
      if (_drawLead && _root.valid() && _lastPoint.x() != -500.0)
      {
        osgEarth::Symbology::LineString* line = new osgEarth::Symbology::LineString();
        line->push_back( _lastPoint );
        line->push_back( _currentPoint );

        osgEarth::Features::Feature* feature = new osgEarth::Features::Feature(line, _mapNode->getMapSRS());
        feature->geoInterp() = osgEarth::GEOINTERP_GREAT_CIRCLE;    
        feature->style() = _lineStyle;

        if (!_featureNode.valid())
        {
          _featureNode = new osgEarth::Annotation::FeatureNode( _mapNode, feature );
          _featureNode->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
          _root->addChild( _featureNode.get() );
        }
        else
        {
          _featureNode->setFeature(feature);
        }
      }
    }


    BaseAnnotationDialog* _dialog;
    osg::ref_ptr<MapNode>  _mapNode;
    osg::ref_ptr<osg::Group> _root;
    osg::ref_ptr<osgEarth::Annotation::FeatureNode> _featureNode;
    osgEarth::Symbology::Style _lineStyle;

    bool _drawLead;
    int _mouseDown;
    float _xDown, _yDown;
    osg::Vec3d _lastPoint;
    osg::Vec3d _currentPoint;
  };

  struct PointDraggerCallback : public osgEarth::Dragger::PositionChangedCallback
  {
    PointDraggerCallback(int index, BaseAnnotationDialog* dialog)
      : _index(index), _dialog(dialog)
    {
    }

    void onPositionChanged(const Dragger* sender, const osgEarth::GeoPoint& position)
    {
      _dialog->movePoint(_index, position);
    }

    int _index;
    BaseAnnotationDialog* _dialog;
  };

  //---------------------------------------------------------------------------

  struct AddEllipseMouseHandler : public osgGA::GUIEventHandler
  {
    AddEllipseMouseHandler(AddEllipseDialog* dialog, osgEarth::MapNode* mapNode, osg::Group* root)
      : _dialog(dialog), _mapNode(mapNode), _root(root), _mouseDown(false), _capturing(true), _rotationAngle(0, osgEarth::Units::DEGREES)
    {
      //Define a style for the ellipse outline
      _ellipseStyle.getOrCreate<LineSymbol>()->stroke()->color() = Color(Color::White, 0.75);
      _ellipseStyle.getOrCreate<LineSymbol>()->stroke()->stipple() = 0x0F0F;
      _ellipseStyle.getOrCreate<LineSymbol>()->stroke()->width() = 2.0;
      _ellipseStyle.getOrCreate<osgEarth::Symbology::AltitudeSymbol>()->clamping() = osgEarth::Symbology::AltitudeSymbol::CLAMP_TO_TERRAIN;
    }

    void setCapturing(bool capturing)
    {
      _capturing = capturing;
    }

    bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa )
    {
      if (!_capturing)
        return false;

      osgViewer::View* view = static_cast<osgViewer::View*>(aa.asView());

      if (ea.getEventType() == osgGA::GUIEventAdapter::PUSH && ea.getButton() == osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON)
      {
        _mouseDown = true;
        _xDown = _xCurr = ea.getX();
        _yDown = _yCurr = ea.getY();
      }
      else if (ea.getEventType() == osgGA::GUIEventAdapter::DRAG && _mouseDown)
      {
        _xCurr = ea.getX();
        _yCurr = ea.getY();
        
        updateValues(aa.asView());
        updateDisplay();

        return true;
      }
      else if (ea.getEventType() == osgGA::GUIEventAdapter::RELEASE && ea.getButton() == osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON && _mouseDown)
      {
        _xCurr = ea.getX();
        _yCurr = ea.getY();

        updateValues(aa.asView());

        _mouseDown = false;
        updateDisplay();

        if (_xCurr != _xDown && _yCurr != _yDown)  
          _dialog->addEllipse(_position, _radiusMajor, _radiusMinor, _rotationAngle);

        return true;
      }

      return false;
    }

    void updateValues(osg::View* view)
    {
      float xMax = osg::maximum(_xDown, _xCurr);
      float xMin = osg::minimum(_xDown, _xCurr);
      float xMid = (xMax + xMin) / 2.0;
      float yMax = osg::maximum(_yDown, _yCurr);
      float yMin = osg::minimum(_yDown, _yCurr);
      float yMid = (yMax + yMin) / 2.0;

      osg::Vec3d world;
      if (_mapNode->getTerrain()->getWorldCoordsUnderMouse(view, xMid, yMid, world))
      {
          _position.fromWorld( _mapNode->getMapSRS(), world );
        //_mapNode->getMap()->worldPointToMapPoint(world, _position);
      }

      double xRad = 0.0;
      if (_mapNode->getTerrain()->getWorldCoordsUnderMouse(view, xMax, yMid, world))
      {
        osgEarth::GeoPoint mapPoint;
        mapPoint.fromWorld( _mapNode->getMapSRS(), world );
        //_mapNode->getMap()->worldPointToMapPoint(world, mapPoint);

        xRad = GeoMath::distance(_position.vec3d(), mapPoint.vec3d(), _position.getSRS());
      }

      double yRad = 0.0;
      if (_mapNode->getTerrain()->getWorldCoordsUnderMouse(view, xMid, yMax, world))
      {
        osgEarth::GeoPoint mapPoint;
        mapPoint.fromWorld( _mapNode->getMapSRS(), world );
        //_mapNode->getMap()->worldPointToMapPoint(world, mapPoint);

        yRad = GeoMath::distance(_position.vec3d(), mapPoint.vec3d(), _position.getSRS());
      }

      if (xRad > yRad)
      {
        _radiusMajor.set(xRad, osgEarth::Units::METERS);
        _radiusMinor.set(yRad, osgEarth::Units::METERS);
        _rotationAngle.set(90.0, osgEarth::Units::DEGREES);
      }
      else
      {
        _radiusMajor.set(yRad, osgEarth::Units::METERS);
        _radiusMinor.set(xRad, osgEarth::Units::METERS);
        _rotationAngle.set(0.0, osgEarth::Units::DEGREES);
      }
    }

    void updateDisplay()
    {
      if (_ellipseNode.valid())
        _root->removeChild(_ellipseNode);

      if (_root.valid() && _mouseDown)
      {
        _ellipseNode = new osgEarth::Annotation::EllipseNode(_mapNode, _position, _radiusMajor, _radiusMinor, _rotationAngle, _ellipseStyle);
        _root->addChild(_ellipseNode);
      }
    }


    AddEllipseDialog* _dialog;
    osg::ref_ptr<MapNode>  _mapNode;
    osg::ref_ptr<osg::Group> _root;
    osg::ref_ptr<osgEarth::Annotation::EllipseNode> _ellipseNode;
    osgEarth::Symbology::Style _ellipseStyle;
    osgEarth::GeoPoint _position;
    osgEarth::Linear _radiusMajor;
    osgEarth::Linear _radiusMinor;
    osgEarth::Angular _rotationAngle;

    bool _capturing;
    bool _mouseDown;
    float _xDown, _yDown, _xCurr, _yCurr;
  };

} }

#endif // OSGEARTHQT_ANNOTATIONDIALOGS_H