QtCollider/widgets/QcListWidget.cpp

   1 /************************************************************************
   2 *
   3 * Copyright 2010-2012 Jakob Leben (jakob.leben@gmail.com)
   4 *
   5 * This file is part of SuperCollider Qt GUI.
   6 *
   7 * This program is free software: you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation, either version 3 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *
  20 ************************************************************************/
  21
  22 #include "QcListWidget.h"
  23 #include "../QcWidgetFactory.h"
  24
  25 #include <QKeyEvent>
  26
  27 class QcListWidgetFactory : public QcWidgetFactory<QcListWidget>
  28 {
  29   void initialize( QWidgetProxy *p, QcListWidget *l ) {
  30     p->setMouseEventWidget( l->viewport() );
  31   }
  32 };
  33
  34 QC_DECLARE_FACTORY( QcListWidget, QcListWidgetFactory );
  35
  36 QcListWidget::QcListWidget() : _emitAction(true)
  37 {
  38   connect( this, SIGNAL( currentItemChanged( QListWidgetItem*, QListWidgetItem* ) ),
  39            this, SLOT( onCurrentItemChanged() ) );
  40 }
  41
  42 void QcListWidget::setItems( const VariantList & items )
  43 {
  44   _emitAction = false;
  45   clear();
  46   Q_FOREACH( QVariant item, items.data )
  47     addItem( item.toString() );
  48   setCurrentRow( 0 );
  49   _emitAction = true;
  50 }
  51
  52 void QcListWidget::setColors( const VariantList & colors ) const
  53 {
  54   int cc = colors.data.count();
  55   int ic = count();
  56   for( int i=0; i<cc && i < ic; ++i ) {
  57     QListWidgetItem *it = item(i);
  58     QColor color( colors.data[i].value<QColor>() );
  59     if( color.isValid() ) it->setBackground( color );
  60   }
  61 }
  62
  63 void QcListWidget::setCurrentRowWithoutAction( int row )
  64 {
  65   bool b = _emitAction;
  66   _emitAction = false;
  67   setCurrentRow( row );
  68   _emitAction = b;
  69 }
  70
  71 void QcListWidget::onCurrentItemChanged()
  72 {
  73   if( _emitAction ) Q_EMIT( action() );
  74 }
  75
  76 void QcListWidget::keyPressEvent( QKeyEvent *e )
  77 {
  78   QListWidget::keyPressEvent( e );
  79
  80   switch (e->key())
  81   {
  82   case Qt::Key_Return:
  83   case Qt::Key_Enter:
  84     Q_EMIT( returnPressed() );
  85     e->accept();
  86     break;
  87   case Qt::Key_Up:
  88   case Qt::Key_Down:
  89   case Qt::Key_Left:
  90   case Qt::Key_Right:
  91   case Qt::Key_PageUp:
  92   case Qt::Key_PageDown:
  93   case Qt::Key_Home:
  94   case Qt::Key_End:
  95     // Prevent propagating to parent when scroller reaches minimum or maximum:
  96     e->accept();
  97   default: break;
  98   }
  99 }