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/*
*
* This file is part of QMapControl,
* an open-source cross-platform map widget
*
* Copyright (C) 2007 - 2008 Kai Winter
*
* This program 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 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with QMapControl. If not, see <http://www.gnu.org/licenses/>.
*
* Contact e-mail: kaiwinter@gmx.de
* Program URL : http://qmapcontrol.sourceforge.net/
*
*/
#ifndef POINT_H
#define POINT_H
#include <QWidget>
#include "geometry.h"
namespace qmapcontrol
{
//! A geometric point to draw objects into maps
/*!
* This class can be used to draw your custom QPixmap or other QWidgets into maps.
* You can instantiate a Point with any Pixmap you want. The objects cares about collision detection (for clickable objects)
*
* When drawing a pixmap, take care you are adding the point to a GeometryLayer.
* You can also add a point to a MapLayer, but this should only be done, if the point is not changing its position or color etc.
* (GeometryLayers are assured to be repainted on any changes at the point. MapLayers only gets repainted, if a new
* offscreenImage is painter. This is a performance issue.)
*
* Points emit click events, if the containing layer receives clickevents (the default)
*
* You can also add a widget into maps. But keep in mind, that widgets always are drawn on top of all layers.
* You also have to handle click events yourself.
*
* To create "zoomable objects" (objects that increases size on zooming), a base level have to be set.
* The base level is the zoom level on which the point´s pixmap gets displayed on full size.
* On lower zoom levels it gets displayed smaller and on higher zoom levels larger.
* A minimal size can be set as well as a maximum size.
* @see setBaselevel, setMinsize, setMaxsize
*
* @author Kai Winter <kaiwinter@gmx.de>
*/
class Point : public Geometry
{
Q_OBJECT
public:
friend class Layer;
friend class LineString;
//! sets where the point should be aligned
enum Alignment
{
TopLeft, /*!< Align on TopLeft*/
TopRight, /*!< Align on TopRight*/
BottomLeft, /*!< Align on BottomLeft*/
BottomRight,/*!< Align on BottomRight*/
Middle /*!< Align on Middle*/
};
Point();
explicit Point(const Point&);
//! Copy Constructor
/*!
* This constructor creates a Point with no image or widget.
* @param x longitude
* @param y latitude
* @param name name of the point
* @param alignment allignment of the point (Middle or TopLeft)
*/
Point(qreal x, qreal y, QString name = QString(), enum Alignment alignment=Middle);
//! Constructor
/*!
* This constructor creates a point which will display the given widget.
* You can set an alignment on which corner the widget should be aligned to the coordinate.
* You have to set the size of the widget, before adding it to
* IMPORTANT: You have to set the QMapControl as parent for the widget!
* @param x longitude
* @param y latitude
* @param widget the widget which should be displayed by this point
* @param name name of the point
* @param alignment allignment of the point (Middle or TopLeft)
*/
Point(qreal x, qreal y, QWidget* widget, QString name = QString(), enum Alignment alignment = Middle);
//! Constructor
/*!
* This constructor creates a point which will display the give pixmap.
* You can set an alignment on which corner the pixmap should be aligned to the coordinate.
* @param x longitude
* @param y latitude
* @param pixmap the pixmap which should be displayed by this point
* @param name name of the point
* @param alignment allignment of the point (Middle or TopLeft)
*/
Point(qreal x, qreal y, QPixmap* pixmap, QString name = QString(), enum Alignment alignment = Middle);
virtual ~Point();
//! returns the bounding box of the point
/*!
* The Bounding contains the coordinate of the point and its size.
* The size is set, if the point contains a pixmap or a widget
* @return the bounding box of the point
*/
virtual QRectF boundingBox();
//! returns the longitude of the point
/*!
* @return the longitude of the point
*/
qreal longitude() const;
//! returns the latitude of the point
/*!
* @return the latitude of the point
*/
qreal latitude() const;
//! returns the coordinate of the point
/*!
* The x component of the returned QPointF is the longitude value,
* the y component the latitude
* @return the coordinate of a point
*/
QPointF coordinate() const;
virtual QList<Point*> points();
/*! \brief returns the widget of the point
@return the widget of the point
*/
QWidget* widget();
//! returns the pixmap of the point
/*!
* @return the pixmap of the point
*/
QPixmap* pixmap();
//! Sets the zoom level on which the point´s pixmap gets displayed on full size
/*!
* Use this method to set a zoom level on which the pixmap gets displayed with its real size.
* On zoomlevels below it will be displayed smaller, and on zoom levels thereover it will be displayed larger
* @see setMinsize, setMaxsize
* @param zoomlevel the zoomlevel on which the point will be displayed on full size
*/
void setBaselevel(int zoomlevel);
//! sets a minimal size for the pixmap
/*!
* When the point´s pixmap should change its size on zooming, this method sets the minimal size.
* @see setBaselevel
* @param minsize the minimal size which the pixmap should have
*/
void setMinsize(QSize minsize);
//! sets a maximal size for the pixmap
/*!
* When the point´s pixmap should change its size on zooming, this method sets the maximal size.
* @see setBaselevel
* @param maxsize the maximal size which the pixmap should have
*/
void setMaxsize(QSize maxsize);
Point::Alignment alignment() const;
protected:
qreal X;
qreal Y;
QSize size;
QWidget* mywidget;
QPixmap* mypixmap;
Alignment myalignment;
int homelevel;
QSize displaysize;
QSize minsize;
QSize maxsize;
void drawWidget(const MapAdapter* mapadapter, const QPoint offset);
// void drawPixmap(QPainter* painter, const MapAdapter* mapadapter, const QRect &viewport, const QPoint versch);
virtual void draw(QPainter* painter, const MapAdapter* mapadapter, const QRect &viewport, const QPoint offset);
QPoint alignedPoint(const QPoint point) const;
//! returns true if the given Point touches this Point
/*!
* The collision detection checks for the bounding rectangulars.
* @param geom the other point which should be tested on collision
* @param mapadapter the mapadapter which is used for calculations
* @return
*/
virtual bool Touches(Point* geom, const MapAdapter* mapadapter);
public slots:
void setCoordinate(QPointF point);
virtual void setVisible(bool visible);
};
}
#endif