MapDisplay.h

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/*  Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.
 
    This file is part of TerraView - A GIS Application.
 
    TerraView 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 3 of the License,
    or (at your option) any later version.
 
    TerraView 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 TerraLib Code Editor. See COPYING. If not, write to
    TerraLib Team at <terralib-team@dpi.inpe.br>.
 */
 
/*! 
  \file terralib/qt/af/connectors/MapDisplay.h
 
  \brief A connector of the te::qt::widgets::MapDisplay class to the Application Framework.
*/
 
#ifndef __TERRALIB_QT_AF_CONNECTORS_INTERNAL_MAPDISPLAY_H
#define __TERRALIB_QT_AF_CONNECTORS_INTERNAL_MAPDISPLAY_H
 
// Terralib
#ifndef Q_MOC_RUN
#include "../../../maptools/AbstractLayer.h"
#endif
#include "../Config.h"
 
// Qt
#include <QObject>
#include <QPoint>
#include <QString>
#include <QMap>
#include <QColor>
#include <QMenu>
#include <QPixmap>
 
class QAction;
 
namespace te
{
  namespace da
  {
    class DataSet;
  }
 
  namespace qt
  {
    namespace widgets
    {
      class CoordTracking;
      class EyeBirdMapDisplayWidget;
      class MapDisplay;
      class PanMiddleClick;
      class ZoomInMapDisplayWidget;
      class ZoomWheel;
    }
 
    namespace af
    {
      class ApplicationController;
 
      namespace evt
      {
        // Forward declaration
        struct Event;
      }
 
      /*!
        \class MapDisplay
        
        \brief A connector of the te::qt::widgets::MapDisplay class to the Application Framework.
 
        It is used to listen events sent by the application framework.
        It is a proxy for the te::qt::widgets::MapDisplay.
      */
      class TEQTAFEXPORT MapDisplay : public QObject
      {
        Q_OBJECT
 
        public:
 
          /*!
            \brief Constructor.
 
            \param display te::qt::widgets::MapDisplay to be listened.
          */
          MapDisplay(te::qt::widgets::MapDisplay* display, te::qt::af::ApplicationController* app);
 
          /*! \brief destructor. */
          ~MapDisplay();
 
          te::qt::widgets::MapDisplay* getDisplay();
 
          void setZoomInDisplay(te::qt::widgets::ZoomInMapDisplayWidget* display);
 
          void setEyeBirdDisplay(te::qt::widgets::EyeBirdMapDisplayWidget* display);
 
          bool eventFilter(QObject* watched, QEvent* e);
 
          /*!
            \brief It draws the given layer list.
 
            \param layers The layer list.
          */
          void draw(const std::list<te::map::AbstractLayerPtr>& layers);
 
          /*! \brief It clears the map display. */
          void clear();
 
          void nextExtent();
 
          void previousExtent();
 
          void fit(const std::list<te::map::AbstractLayerPtr>& layers);
 
          void pan(const std::list<te::map::AbstractLayerPtr>& layers);
 
        protected slots:
 
          void onCoordTracked(QPointF& coordinate);
 
          void onCoordLLTracked(QPointF& coordinate, QPointF& llCoordinate);
 
          void onDrawLayersFinished(const QMap<QString, QString>& errors);
 
          void onExtentChanged();
 
          /*!
            \brief Listener to the application framewrork events.
 
            \param e An event sent by framework.
          */
          void onApplicationTriggered(te::qt::af::evt::Event* e);
 
          /*!
           \brief Returns the pan selected flag;
 
           \return Flag of the pan to selected operation.
          */
          bool isPanToSelectedEnabled();
 
        protected:
 
          void drawLayersSelection(const std::list<te::map::AbstractLayerPtr>& layers);
 
          void drawLayerSelection(te::map::AbstractLayerPtr layer);
 
          void drawDataSet(te::da::DataSet* dataset, const std::string& geomPropertyName, int srid, const QColor& color, bool isLinked = false);
 
          void drawDataSet(te::da::DataSet* dataset, const std::string& geomPropertyName, int srid, te::se::Style* style, bool isLinked = false);
 
          void configSRS(const std::list<te::map::AbstractLayerPtr>& layers);
 
          std::list<te::map::AbstractLayerPtr> getSelectedLayer();
 
        signals:
 
          void hasNextExtent(bool value);
 
          void hasPreviousExtent(bool value);
 
          void triggered(te::qt::af::evt::Event* e);
 
        protected:
 
          std::list<te::map::AbstractLayerPtr> getVisibleLayers();
 
 
          te::qt::af::ApplicationController* m_app;                   //!< Pointer to applicatin controller;
          te::qt::widgets::MapDisplay* m_display;                     //!< Pointer to a component te::qt::widgets::MapDisplay.
          QMenu* m_menu;                                              //!< The map display popup menu.
          QPixmap m_lastDisplayContent;                               //!< The last map display content. i.e. a "clean" pixmap.
          std::vector<te::gm::Envelope> m_extentStack;                //!< The stack of MapDisplay extents.
          int m_currentExtentIndex;                                   //!< The current extent index.
          int m_extentStackMaxSize;                                   //!< The max size of the extent stack. Used on previousExtent and nextExtent.
 
          te::qt::widgets::CoordTracking* m_coordTracking;            //!< Tool for tracking mouse position
          te::qt::widgets::ZoomWheel* m_zoomWheel;                    //!< Tool for zoom using the wheel mouse button
          te::qt::widgets::PanMiddleClick* m_pan;                     //!< Tool for pan using the middle mouse button
 
          te::qt::widgets::ZoomInMapDisplayWidget* m_zoomInDisplay;   //!< Pointer to a component that represents a zoom in display.
          te::qt::widgets::EyeBirdMapDisplayWidget* m_eyeBirdDisplay; //!< Pointer to a component that represents a eye bird display.
 
          QAction* m_pantoSelectedAction;                             //!< Action to enable / disable pan to selected operation.
 
          bool m_autoPanEnabled;                                       //!< Define if auto pan is enabled.
      };
    }
  }
}
 
#endif // __TERRALIB_QT_AF_CONNECTORS_INTERNAL_MAPDISPLAY_H