kstars

draglistbox.cpp

00001 /***************************************************************************
00002                           draglistbox.cpp  -  description
00003                              -------------------
00004     begin                : Sun May 29 2005
00005     copyright            : (C) 2005 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 <qdragobject.h>
00019 #include <klocale.h>
00020 #include <kdebug.h>
00021 
00022 #include "draglistbox.h"
00023 
00024 DragListBox::DragListBox( QWidget *parent, const char *name, WFlags f ) 
00025         : KListBox( parent, name, f ) {
00026 
00027     setAcceptDrops( TRUE );
00028     dragging = FALSE;
00029 }
00030 
00031 DragListBox::~DragListBox() {}
00032 
00033 void DragListBox::dragEnterEvent( QDragEnterEvent *evt )
00034 {
00035     if ( QTextDrag::canDecode( evt ) ) 
00036         evt->accept();
00037 }
00038 
00039 bool DragListBox::contains( const QString &s ) const {
00040     for ( uint i=0; i<count(); ++i )
00041         if ( text(i) == s ) return true;
00042 
00043     return false;
00044 }
00045 
00046 void DragListBox::dropEvent( QDropEvent *evt ) {
00047     QString text;
00048 
00049     int i = int( float(evt->pos().y())/float(itemHeight()) + 0.5 ) + topItem();
00050     if ( i > count() + 1 ) i = count() + 1;
00051 
00052     if ( QTextDrag::decode( evt, text ) ) {
00053         //If we dragged an "Ignore item from the FieldList to the FieldPool, then we don't
00054         //need to insert the item, because FieldPool already has a persistent Ignore item.
00055         if ( !( text == i18n("Ignore" ) && QString(evt->source()->name()) == "FieldList" && 
00056                 evt->source() != this )) {
00057             insertItem( text, i );
00058         }
00059 
00060         //If we dragged the "Ignore" item from FieldPool to FieldList, then we don't
00061         //want to remove the item from the FieldPool
00062         if ( !( text == i18n("Ignore" ) && QString(evt->source()->name()) == "FieldPool" && 
00063                 evt->source() != this ) ) {
00064             DragListBox *fp = (DragListBox*)evt->source();
00065             fp->removeItem( fp->currentItem() );
00066         }
00067     }
00068 }
00069 
00070 
00071 void DragListBox::mousePressEvent( QMouseEvent *evt ) {
00072     QListBox::mousePressEvent( evt );
00073     dragging = TRUE;
00074     
00075     //Record position of the Ignore item; we may have to restore it.
00076     if ( currentText() == i18n("Ignore") )
00077         IgnoreIndex = currentItem();
00078     else 
00079         IgnoreIndex = -1;
00080 }
00081 
00082 
00083 void DragListBox::mouseMoveEvent( QMouseEvent * )
00084 {
00085     if ( dragging ) {
00086         QDragObject *drag = new QTextDrag( currentText(), this );
00087         drag->dragMove();
00088         dragging = FALSE;
00089     }
00090 }
00091 
00092 #include "draglistbox.moc"
kstars

draglistbox.cpp

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