1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/***************************************************************************
mapcanvas.h - K Desktop Planetarium
-------------------
begin : Tue Apr 10 2001
copyright : (C) 2001 by Jason Harris
email : jharris@30doradus.org
***************************************************************************/
/***************************************************************************
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef MAPCANVAS_H
#define MAPCANVAS_H
#include <tqwidget.h>
#include <tqpoint.h>
/**@class MapCanvas
*Used in LocationDialog for displaying a map of the Earth.
*In addition, cities in the database are drawn as grey or white dots.
*Also, the widget processes mouse clicks, to trim the list of
*cities to those near the mouse click.
*@short Widget used in the LocationDialog for displaying the world map.
*@author Jason Harris
*@version 1.0
*/
class TQPixmap;
class MapCanvas : public TQWidget {
Q_OBJECT
public:
/**Default constructor. Initialize the widget: create pixmaps, load the
*world map bitmap, set pointers to the main window and the
*LocationDialog parent.
*/
MapCanvas(TQWidget *parent=0, const char *name=0);
/**Destructor (empty)
*/
~MapCanvas();
public slots:
/**Set the geometry of the map widget (overloaded from TQWidget).
*Resizes the size of the map pixmap to match the widget, and resets
*the Origin TQPoint so it remains at the center of the widget.
*@note this is called automatically by resize events.
*@p x the x-position of the widget
*@p y the y-position of the widget
*@p w the width of the widget
*@p h the height of the widget
*/
virtual void setGeometry( int x, int y, int w, int h );
/**Set the geometry of the map widget (overloaded from TQWidget).
*Resizes the size of the map pixmap to match the widget, and resets
*the Origin TQPoint so it remains at the center of the widget.
*This function behaves just like the above function. It differs
*only in the data type of its argument.
*@note this is called automatically by resize events.
*@p r TQRect describing geometry
*/
virtual void setGeometry( const TQRect &r );
protected:
/**Draw the map. Draw grey dots on the locations of all cities,
*and highlight the cities which match the current filters
*as white dits. Also draw a red crosshairs on the
*currently-selected city.
*@see LocationDialog
*/
virtual void paintEvent( TQPaintEvent *e );
/**Trim the list of cities so that only those within 2 degrees
*of the mouse click are shown in the list.
*@see LocationDialog
*/
virtual void mousePressEvent( TQMouseEvent *e );
private:
TQPixmap *Canvas, *bgImage;
TQString BGColor;
TQPoint origin;
};
#endif
|
