kstars/kstars/focusdialog.cpp

   1 /***************************************************************************
   2                           focusdialog.cpp  -  description
   3                              -------------------
   4     begin                : Sat Mar 23 2002
   5     copyright            : (C) 2002 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 <qtabwidget.h>
  19 #include <qlayout.h>
  20
  21 #include <kdebug.h>
  22 #include <klocale.h>
  23 #include <kmessagebox.h>
  24
  25 #include <qstring.h>
  26 #include <knumvalidator.h>
  27
  28 #include "kstars.h"
  29 #include "kstarsdata.h"
  30 #include "dms.h"
  31 #include "skypoint.h"
  32 #include "dmsbox.h"
  33 #include "focusdialog.h"
  34
  35 FocusDialog::FocusDialog( QWidget *parent )
  36         : KDialogBase( KDialogBase::Plain, i18n( "Set Focus Manually" ), Ok|Cancel, Ok, parent ) {
  37
  38         Point = 0; //initialize pointer to null
  39         UsedAltAz = false; //assume RA/Dec by default
  40
  41         QFrame *page = plainPage();
  42         setMainWidget(page);
  43         QVBoxLayout *vlay = new QVBoxLayout( page, 0, spacingHint() );
  44         fdlg = new FocusDialogDlg(page);
  45         fdlg->epochName->setValidator( new KDoubleValidator( fdlg->epochName ) );
  46         vlay->addWidget( fdlg );
  47
  48         connect( fdlg->raBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
  49         connect( fdlg->decBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
  50         connect( fdlg->azBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
  51         connect( fdlg->altBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
  52         connect( this, SIGNAL( okClicked() ), this, SLOT( validatePoint() ) );
  53
  54         fdlg->raBox->setFocus(); //set input focus
  55         enableButtonOK( false ); //disable until both lineedits are filled
  56 }
  57
  58 FocusDialog::~FocusDialog(){
  59 }
  60
  61 void FocusDialog::checkLineEdits() {
  62         bool raOk(false), decOk(false), azOk(false), altOk(false);
  63         fdlg->raBox->createDms( false, &raOk );
  64         fdlg->decBox->createDms( true, &decOk );
  65         fdlg->azBox->createDms( true, &azOk );
  66         fdlg->altBox->createDms( true, &altOk );
  67         if ( ( raOk && decOk ) || ( azOk && altOk ) )
  68                 enableButtonOK( true );
  69         else
  70                 enableButtonOK( false );
  71 }
  72
  73 void FocusDialog::slotOk() {
  74         emit okClicked();
  75 }
  76
  77 void FocusDialog::validatePoint() {
  78         bool raOk(false), decOk(false), azOk(false), altOk(false);
  79         dms ra( fdlg->raBox->createDms( false, &raOk ) ); //false means expressed in hours
  80         dms dec( fdlg->decBox->createDms( true, &decOk ) );
  81         QString message;
  82
  83         KStars *ks = (KStars*) parent();
  84
  85         if ( raOk && decOk ) {
  86                 //make sure values are in valid range
  87                 if ( ra.Hours() < 0.0 || ra.Hours() > 24.0 )
  88                         message = i18n( "The Right Ascension value must be between 0.0 and 24.0." );
  89                 if ( dec.Degrees() < -90.0 || dec.Degrees() > 90.0 )
  90                         message += "\n" + i18n( "The Declination value must be between -90.0 and 90.0." );
  91                 if ( ! message.isEmpty() ) {
  92                         KMessageBox::sorry( 0, message, i18n( "Invalid Coordinate Data" ) );
  93                         return;
  94                 }
  95
  96                 Point = new SkyPoint( ra, dec );
  97                 double epoch0 = getEpoch( fdlg->epochName->text() );
  98                 long double jd0 = epochToJd ( epoch0 );
  99                 Point->apparentCoord(jd0, ks->data()->ut().djd() );
 100
 101                 QDialog::accept();
 102         } else {
 103                 dms az(  fdlg->azBox->createDms( true, &azOk ) );
 104                 dms alt( fdlg->altBox->createDms( true, &altOk ) );
 105
 106                 if ( azOk && altOk ) {
 107                         //make sure values are in valid range
 108                         if ( az.Degrees() < 0.0 || az.Degrees() > 360.0 )
 109                                 message = i18n( "The Azimuth value must be between 0.0 and 360.0." );
 110                         if ( alt.Degrees() < -90.0 || alt.Degrees() > 90.0 )
 111                                 message += "\n" + i18n( "The Altitude value must be between -90.0 and 90.0." );
 112                         if ( ! message.isEmpty() ) {
 113                                 KMessageBox::sorry( 0, message, i18n( "Invalid Coordinate Data" ) );
 114                                 return;
 115                         }
 116
 117                         Point = new SkyPoint();
 118                         Point->setAz( az );
 119                         Point->setAlt( alt );
 120                         UsedAltAz = true;
 121
 122                         QDialog::accept();
 123                 } else {
 124                         QDialog::reject();
 125                 }
 126         }
 127 }
 128
 129 double FocusDialog::getEpoch (QString eName) {
 130         //If eName is empty (or not a number) assume 2000.0
 131         bool ok(false);
 132         double epoch = eName.toDouble( &ok );
 133         if ( eName.isEmpty() || ! ok )
 134                 return 2000.0;
 135
 136         return epoch;
 137 }
 138
 139 long double FocusDialog::epochToJd (double epoch) {
 140
 141         double yearsTo2000 = 2000.0 - epoch;
 142
 143         if (epoch == 1950.0) {
 144                 return 2433282.4235;
 145         } else if ( epoch == 2000.0 ) {
 146                 return J2000;
 147         } else {
 148                 return ( J2000 - yearsTo2000 * 365.2425 );
 149         }
 150
 151 }
 152
 153
 154 QSize FocusDialog::sizeHint() const
 155 {
 156   return QSize(240,210);
 157 }
 158
 159 void FocusDialog::activateAzAltPage() {
 160         fdlg->fdTab->showPage( fdlg->aaTab );
 161         fdlg->azBox->setFocus();
 162 }
 163 #include "focusdialog.moc"