gcs-nf/opmap/mapwidget/mapgraphicitem.h

/**
 ******************************************************************************
 *
 * @file       mapgraphicitem.h
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
 * @brief      The main graphicsItem used on the widget, contains the map and map logic
 * @see        The GNU Public License (GPL) Version 3
 * @defgroup   OPMapWidget
 * @{
 *
 *****************************************************************************/
/*
 * 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 3 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.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef MAPGRAPHICITEM_H
#define MAPGRAPHICITEM_H

#include <QGraphicsItem>
#include "core.h"
// #include "../internals/point.h"
#include "diagnostics.h"
#include "configuration.h"
#include <QtGui>
#include <QTransform>
#include <QWidget>
#include <QBrush>
#include <QFont>
#include <QObject>
#include "waypointitem.h"
// #include "uavitem.h"

namespace mapcontrol {

#ifdef QtopmapWidget
#include <mapwidgetglobal.h>
class OPMAPWIDGETSHARED_EXPORT WayPointItem;
class OPMAPWIDGETSHARED_EXPORT OPMapWidget;

#else
class WayPointItem;
class OPMapWidget;
#endif


/**
 * @brief The main graphicsItem used on the widget, contains the map and map logic
 *
 * @class MapGraphicItem mapgraphicitem.h "mapgraphicitem.h"
 */


#ifdef QtopmapWidget
#include <mapwidgetglobal.h>
class OPMAPWIDGETSHARED_EXPORT MapGraphicItem : public QObject, public QGraphicsItem {

#else
class MapGraphicItem : public QObject, public QGraphicsItem {
#endif


    friend class mapcontrol::OPMapWidget;
    Q_OBJECT
        Q_INTERFACES(QGraphicsItem)
public:


    /**
     * @brief Contructer
     *
     * @param core
     * @param configuration the configuration to be used
     * @return
     */
    MapGraphicItem(internals::Core *core, Configuration *configuration);
    QRectF boundingRect() const;
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
               QWidget *widget);

    QSize sizeHint() const;
    /**
     * @brief Convertes LatLong coordinates to local item coordinates
     *
     * @param point LatLong point to be converted
     * @return core::Point Local item point
     */
    core::Point FromLatLngToLocal(internals::PointLatLng const & point);
    /**
     * @brief Converts from local item coordinates to LatLong point
     *
     * @param x x local coordinate
     * @param y y local coordinate
     * @return internals::PointLatLng LatLng coordinate
     */
    internals::PointLatLng FromLocalToLatLng(int x, int y);
    /**
     * @brief Returns true if map is being dragged
     *
     * @return
     */
    bool IsDragging() const
    {
        return core->IsDragging();
    }

    QImage lastimage;
    core::Point lastimagepoint;
    void paintImage(QPainter *painter);
    void ConstructLastImage(int const & zoomdiff);
    internals::PureProjection *Projection() const
    {
        return core->Projection();
    }
    double Zoom();
    double ZoomDigi();
    double ZoomTotal();
    void setOverlayOpacity(qreal value);
protected:
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void wheelEvent(QGraphicsSceneWheelEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
    bool IsMouseOverMarker() const
    {
        return isMouseOverMarker;
    }
    void keyPressEvent(QKeyEvent *event);
    void keyReleaseEvent(QKeyEvent *event);

    /**
     * @brief Returns current map zoom
     *
     * @return int Current map zoom
     */
    int ZoomStep() const;
    /**
     * @brief Sets map zoom
     *
     * @param value zoom value
     */
    void SetZoomStep(int const & value);

    /**
     * @brief Ask Stacey
     *
     * @param value
     */
    void SetShowDragons(bool const & value);
private:
    bool showDragons;
    bool SetZoomToFitRect(internals::RectLatLng const & rect);
    internals::Core *core;
    Configuration *config;
    bool showTileGridLines;
    qreal MapRenderTransform;
    void DrawMap2D(QPainter *painter);
    /**
     * @brief Maximum possible zoom
     *
     * @var maxZoom
     */
    int maxZoom;
    /**
     * @brief Minimum possible zoom
     *
     * @var minZoom
     */
    int minZoom;
    internals::RectLatLng selectedArea;
    internals::PointLatLng selectionStart;
    internals::PointLatLng selectionEnd;
    double zoomReal;
    double zoomDigi;
    QRectF maprect;
    bool isSelected;
    bool isMouseOverMarker;
    QPixmap dragons;
    void SetIsMouseOverMarker(bool const & value)
    {
        isMouseOverMarker = value;
    }

    qreal rotation;
    /**
     * @brief Creates a rectangle that represents the "view" of the cuurent map, to compensate
     *       rotation
     *
     * @param rect original rectangle
     * @param angle angle of rotation
     * @return QRectF
     */
    QRectF boundingBox(QRectF const & rect, qreal const & angle);
    /**
     * @brief Returns the maximum allowed zoom
     *
     * @return int
     */
    int MaxZoom() const
    {
        return core->MaxZoom();
    }
    /**
     * @brief Returns the minimum allowed zoom
     *
     * @return int
     */
    int MinZoom() const
    {
        return minZoom;
    }
    internals::MouseWheelZoomType::Types GetMouseWheelZoomType()
    {
        return core->GetMouseWheelZoomType();
    }
    void SetSelectedArea(internals::RectLatLng const & value)
    {
        selectedArea = value; this->update();
    }
    internals::RectLatLng SelectedArea() const
    {
        return selectedArea;
    }
    internals::RectLatLng BoundsOfMap;
    void Offset(int const & x, int const & y);
    bool CanDragMap() const
    {
        return core->CanDragMap;
    }
    void SetCanDragMap(bool const & value)
    {
        core->CanDragMap = value;
    }

    void SetZoom(double const & value);
    void mapRotate(qreal angle);
    void start();
    void  ReloadMap()
    {
        core->ReloadMap();
    }
    GeoCoderStatusCode::Types SetCurrentPositionByKeywords(QString const & keys)
    {
        return core->SetCurrentPositionByKeywords(keys);
    }
    MapType::Types GetMapType()
    {
        return core->GetMapType();
    }
    void SetMapType(MapType::Types const & value)
    {
        core->SetMapType(value);
    }
private slots:
    void Core_OnNeedInvalidation();
    void childPosRefresh();
public slots:
    /**
     * @brief To be called when the scene size changes
     *
     * @param rect
     */
    void resize(QRectF const &rect = QRectF());
signals:
    /**
     * @brief Fired when the current zoom is changed
     *
     * @param zoom
     */
    void wpdoubleclicked(WayPointItem *wp);
    void zoomChanged(double zoomtotal, double zoomreal, double zoomdigi);
    void childRefreshPosition();
    void childSetOpacity(qreal value);
};
}
#endif // MAPGRAPHICITEM_H