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96 lines
3.3 KiB
96 lines
3.3 KiB
/***************************************************************************
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mapcanvas.h - Trinity Desktop Planetarium
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-------------------
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begin : Tue Apr 10 2001
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copyright : (C) 2001 by Jason Harris
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email : jharris@30doradus.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef MAPCANVAS_H
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#define MAPCANVAS_H
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#include <tqwidget.h>
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#include <tqpoint.h>
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/**@class MapCanvas
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*Used in LocationDialog for displaying a map of the Earth.
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*In addition, cities in the database are drawn as grey or white dots.
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*Also, the widget processes mouse clicks, to trim the list of
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*cities to those near the mouse click.
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*@short Widget used in the LocationDialog for displaying the world map.
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*@author Jason Harris
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*@version 1.0
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*/
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class TQPixmap;
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class MapCanvas : public TQWidget {
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Q_OBJECT
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public:
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/**Default constructor. Initialize the widget: create pixmaps, load the
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*world map bitmap, set pointers to the main window and the
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*LocationDialog parent.
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*/
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MapCanvas(TQWidget *parent=0, const char *name=0);
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/**Destructor (empty)
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*/
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~MapCanvas();
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public slots:
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/**Set the geometry of the map widget (overloaded from TQWidget).
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*Resizes the size of the map pixmap to match the widget, and resets
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*the Origin TQPoint so it remains at the center of the widget.
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*@note this is called automatically by resize events.
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*@p x the x-position of the widget
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*@p y the y-position of the widget
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*@p w the width of the widget
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*@p h the height of the widget
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*/
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virtual void setGeometry( int x, int y, int w, int h );
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/**Set the geometry of the map widget (overloaded from TQWidget).
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*Resizes the size of the map pixmap to match the widget, and resets
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*the Origin TQPoint so it remains at the center of the widget.
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*This function behaves just like the above function. It differs
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*only in the data type of its argument.
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*@note this is called automatically by resize events.
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*@p r TQRect describing geometry
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*/
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virtual void setGeometry( const TQRect &r );
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protected:
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/**Draw the map. Draw grey dots on the locations of all cities,
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*and highlight the cities which match the current filters
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*as white dits. Also draw a red crosshairs on the
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*currently-selected city.
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*@see LocationDialog
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*/
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virtual void paintEvent( TQPaintEvent *e );
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/**Trim the list of cities so that only those within 2 degrees
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*of the mouse click are shown in the list.
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*@see LocationDialog
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*/
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virtual void mousePressEvent( TQMouseEvent *e );
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private:
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TQPixmap *Canvas, *bgImage;
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TQString BGColor;
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TQPoint origin;
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};
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#endif
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