kstars

focusdialog.cpp

00001 /***************************************************************************
00002                           focusdialog.cpp  -  description
00003                              -------------------
00004     begin                : Sat Mar 23 2002
00005     copyright            : (C) 2002 by Jason Harris
00006     email                : kstars@30doradus.org
00007  ***************************************************************************/
00008 
00009 /***************************************************************************
00010  *                                                                         *
00011  *   This program is free software; you can redistribute it and/or modify  *
00012  *   it under the terms of the GNU General Public License as published by  *
00013  *   the Free Software Foundation; either version 2 of the License, or     *
00014  *   (at your option) any later version.                                   *
00015  *                                                                         *
00016  ***************************************************************************/
00017 
00018 #include <qtabwidget.h>
00019 #include <qlayout.h>
00020 
00021 #include <kdebug.h>
00022 #include <klocale.h>
00023 #include <kmessagebox.h>
00024 
00025 #include <qstring.h>
00026 #include <knumvalidator.h>
00027 
00028 #include "kstars.h"
00029 #include "kstarsdata.h"
00030 #include "dms.h"
00031 #include "skypoint.h"
00032 #include "dmsbox.h"
00033 #include "focusdialog.h"
00034 
00035 FocusDialog::FocusDialog( QWidget *parent )
00036     : KDialogBase( KDialogBase::Plain, i18n( "Set Focus Manually" ), Ok|Cancel, Ok, parent ) {
00037 
00038     Point = 0; //initialize pointer to null
00039     UsedAltAz = false; //assume RA/Dec by default
00040 
00041     QFrame *page = plainPage();
00042     setMainWidget(page);
00043     QVBoxLayout *vlay = new QVBoxLayout( page, 0, spacingHint() );
00044     fdlg = new FocusDialogDlg(page);
00045     fdlg->epochName->setValidator( new KDoubleValidator( fdlg->epochName ) );
00046     vlay->addWidget( fdlg );
00047     
00048     connect( fdlg->raBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
00049     connect( fdlg->decBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
00050     connect( fdlg->azBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
00051     connect( fdlg->altBox, SIGNAL(textChanged( const QString & ) ), this, SLOT( checkLineEdits() ) );
00052     connect( this, SIGNAL( okClicked() ), this, SLOT( validatePoint() ) );
00053 
00054     fdlg->raBox->setDegType(false); //RA box should be HMS-style
00055     fdlg->raBox->setFocus(); //set input focus
00056     enableButtonOK( false ); //disable until both lineedits are filled
00057 }
00058 
00059 FocusDialog::~FocusDialog(){
00060 }
00061 
00062 void FocusDialog::checkLineEdits() {
00063     bool raOk(false), decOk(false), azOk(false), altOk(false);
00064     fdlg->raBox->createDms( false, &raOk );
00065     fdlg->decBox->createDms( true, &decOk );
00066     fdlg->azBox->createDms( true, &azOk );
00067     fdlg->altBox->createDms( true, &altOk );
00068     if ( ( raOk && decOk ) || ( azOk && altOk ) )
00069         enableButtonOK( true );
00070     else
00071         enableButtonOK( false );
00072 }
00073 
00074 void FocusDialog::slotOk() {
00075     emit okClicked();
00076 }
00077 
00078 void FocusDialog::validatePoint() {
00079     bool raOk(false), decOk(false), azOk(false), altOk(false);
00080     dms ra( fdlg->raBox->createDms( false, &raOk ) ); //false means expressed in hours
00081     dms dec( fdlg->decBox->createDms( true, &decOk ) );
00082     QString message;
00083 
00084     KStars *ks = (KStars*) parent();
00085 
00086     if ( raOk && decOk ) {
00087         //make sure values are in valid range
00088         if ( ra.Hours() < 0.0 || ra.Hours() > 24.0 )
00089             message = i18n( "The Right Ascension value must be between 0.0 and 24.0." );
00090         if ( dec.Degrees() < -90.0 || dec.Degrees() > 90.0 )
00091             message += "\n" + i18n( "The Declination value must be between -90.0 and 90.0." );
00092         if ( ! message.isEmpty() ) {
00093             KMessageBox::sorry( 0, message, i18n( "Invalid Coordinate Data" ) );
00094             return;
00095         }
00096 
00097         Point = new SkyPoint( ra, dec );
00098         double epoch0 = getEpoch( fdlg->epochName->text() );
00099         long double jd0 = epochToJd ( epoch0 );
00100         Point->apparentCoord(jd0, ks->data()->ut().djd() );
00101 
00102         QDialog::accept();
00103     } else {
00104         dms az(  fdlg->azBox->createDms( true, &azOk ) );
00105         dms alt( fdlg->altBox->createDms( true, &altOk ) );
00106 
00107         if ( azOk && altOk ) {
00108             //make sure values are in valid range
00109             if ( az.Degrees() < 0.0 || az.Degrees() > 360.0 )
00110                 message = i18n( "The Azimuth value must be between 0.0 and 360.0." );
00111             if ( alt.Degrees() < -90.0 || alt.Degrees() > 90.0 )
00112                 message += "\n" + i18n( "The Altitude value must be between -90.0 and 90.0." );
00113             if ( ! message.isEmpty() ) {
00114                 KMessageBox::sorry( 0, message, i18n( "Invalid Coordinate Data" ) );
00115                 return;
00116             }
00117 
00118             Point = new SkyPoint();
00119             Point->setAz( az );
00120             Point->setAlt( alt );
00121             UsedAltAz = true;
00122 
00123             QDialog::accept();
00124         } else {
00125             QDialog::reject();
00126         }
00127     }
00128 }
00129 
00130 double FocusDialog::getEpoch (QString eName) {
00131     //If eName is empty (or not a number) assume 2000.0
00132     bool ok(false);
00133     double epoch = eName.toDouble( &ok );
00134     if ( eName.isEmpty() || ! ok )
00135         return 2000.0;
00136 
00137     return epoch;
00138 }
00139 
00140 long double FocusDialog::epochToJd (double epoch) {
00141 
00142     double yearsTo2000 = 2000.0 - epoch;
00143 
00144     if (epoch == 1950.0) {
00145         return 2433282.4235;
00146     } else if ( epoch == 2000.0 ) {
00147         return J2000;
00148     } else {
00149         return ( J2000 - yearsTo2000 * 365.2425 );
00150     }
00151 
00152 }
00153 
00154 
00155 QSize FocusDialog::sizeHint() const
00156 {
00157   return QSize(240,210);
00158 }
00159 
00160 void FocusDialog::activateAzAltPage() {
00161     fdlg->fdTab->showPage( fdlg->aaTab );
00162     fdlg->azBox->setFocus();
00163 }
00164 #include "focusdialog.moc"
kstars

focusdialog.cpp

kstars

API Reference
