kstars/kstars/fov.cpp

   1 /***************************************************************************
   2                           fov.cpp  -  description
   3                              -------------------
   4     begin                : Fri 05 Sept 2003
   5     copyright            : (C) 2003 by Jason Harris
   6     email                : kstars@30doradus.org
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #include <qpainter.h>
  19 #include <qfile.h>
  20 #include <kdebug.h>
  21 #include <klocale.h>
  22 #include <kstandarddirs.h>
  23
  24 #include "fov.h"
  25
  26 //------------FOV-----------------//
  27 FOV::FOV( QString n, float sz, int sh, QString col ) : Name( n ), Color( col ), Size( sz ), Shape( sh )
  28 {}
  29
  30 FOV::FOV() : Name( i18n( "No FOV" ) ), Color( "#FFFFFF" ), Size( 0.0 ), Shape( 0 )
  31 {}
  32
  33 FOV::FOV( QString sname ) {
  34         QFile f;
  35         f.setName( locate( "appdata", "fov.dat" ) );
  36
  37         int sh;
  38         float sz;
  39
  40         if ( f.exists() && f.open( IO_ReadOnly ) ) {
  41                 QTextStream stream( &f );
  42                 while ( !stream.eof() ) {
  43                         QStringList fields = QStringList::split( ":", stream.readLine() );
  44                         bool ok( false );
  45
  46                         if ( fields.count() == 4 ) {
  47                                 if ( fields[0] == sname ) {
  48                                         sz = (float)(fields[1].toDouble( &ok ));
  49                                         if ( ok ) {
  50                                                 sh = fields[2].toInt( &ok );
  51                                                 if ( ok ) {
  52                                                         Name = fields[0];
  53                                                         Size = sz;
  54                                                         Shape = sh;
  55                                                         Color = fields[3];
  56
  57                                                         return;
  58                                                 }
  59                                         }
  60
  61                                         break;
  62                                 }
  63                         }
  64                 }
  65         }
  66
  67         //If we get here, then the symbol could not be assigned
  68         Name = i18n( "No FOV" );
  69         Size = 0.0;
  70         Shape = 0;
  71         Color = "#FFFFFF";
  72 }
  73
  74 void FOV::draw( QPainter &p, float pixelsize ) {
  75         p.setPen( QColor( color() ) );
  76         p.setBrush( Qt::NoBrush );
  77         int w = p.viewport().width();
  78         int h = p.viewport().height();
  79
  80         switch ( shape() ) {
  81                 case 0: { //Square
  82                         int s = int( pixelsize );
  83                         p.drawRect( (w - s)/2, (h - s)/2, s, s );
  84                         break;
  85                 }
  86                 case 1: { //Circle
  87                         int s = int( pixelsize );
  88                         p.drawEllipse( (w - s)/2, (h - s)/2, s, s );
  89                         break;
  90                 }
  91                 case 2: { //Crosshairs
  92                         int s1 = int( pixelsize );
  93                         int s2 = 2*int( pixelsize );
  94                         int s3 = 3*int( pixelsize );
  95
  96                         int x0 = w/2;  int y0 = h/2;
  97                         int x1 = x0 - s1/2;  int y1 = y0 - s1/2;
  98                         int x2 = x0 - s2/2;  int y2 = y0 - s2/2;
  99                         int x3 = x0 - s3/2;  int y3 = y0 - s3/2;
 100
 101                         //Draw radial lines
 102                         p.drawLine( x1, y0, x3, y0 );
 103                         p.drawLine( x0+s3/2, y0, x0+s1/2, y0 );
 104                         p.drawLine( x0, y1, x0, y3 );
 105                         p.drawLine( x0, y0+s1/2, x0, y0+s3/2 );
 106
 107                         //Draw circles at 0.5 & 1 degrees
 108                         p.drawEllipse( x1, y1, s1, s1 );
 109                         p.drawEllipse( x2, y2, s2, s2 );
 110
 111                         break;
 112                 }
 113                 case 3: { //Bullseye
 114                         int s1 = int( pixelsize );
 115                         int s2 = 2*int( pixelsize );
 116                         int s3 = 3*int( pixelsize );
 117
 118                         int x0 = w/2;  int y0 = h/2;
 119                         int x1 = x0 - s1/2;  int y1 = y0 - s1/2;
 120                         int x2 = x0 - s2/2;  int y2 = y0 - s2/2;
 121                         int x3 = x0 - s3/2;  int y3 = y0 - s3/2;
 122
 123                         p.drawEllipse( x1, y1, s1, s1 );
 124                         p.drawEllipse( x2, y2, s2, s2 );
 125                         p.drawEllipse( x3, y3, s3, s3 );
 126
 127                         break;
 128                 }
 129                 case 4: { // Solid Circle
 130                         int s = int( pixelsize );
 131                         p.setBrush( QBrush ( QColor( color() ), Qt::Dense4Pattern) );
 132                         p.drawEllipse( (w - s)/2, (h - s)/2, s, s );
 133                         p.setBrush(Qt::NoBrush);
 134                         break;
 135                 }
 136         }
 137 }
 138