QTablewidget and QItemDelegate?

[whitefurrows]

Hi,

i try to display widgets within a QTablewidget:

1. How can i show the first item in the QComboBox if editing finished and not the model value?
2. How can i set at row 0 a different QDoubbleValidator dependent the QComboBox entry?

Thanks in advanced

TableCellDelegate::TableCellDelegate(QObject *parent) : QItemDelegate(parent)
{
}
 
void TableCellDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
  int idx = index.column();
  if(idx == 1)
  {
    // Display first QComboBox item ???
  }
  else if(idx == 2)
  {
    int secs = index.model()->data(index, Qt::DisplayRole).toInt();
    QString text = QString("%1:%2")
                       .arg(secs / 60, 2, 10, QChar('0'))
                       .arg(secs % 60, 2, 10, QChar('0'));
 
     QStyleOptionViewItem myOption = option;
     myOption.displayAlignment = Qt::AlignRight | Qt::AlignVCenter;
 
     drawDisplay(painter, myOption, myOption.rect, text);
     drawFocus(painter, myOption, myOption.rect);
  }
  else
  {
     QItemDelegate::paint(painter, option, index);
  }
}
 
QWidget *TableCellDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) 
 
const
{
  int idx = index.column();
  if(idx == 1)
  {
    QComboBox *combo = new QComboBox( parent );
    combo->addItem("Item 1");
    combo->addItem("Item 2");
    combo->addItem("Item 3");
    combo->setCurrentIndex(0);
    connect(combo, SIGNAL( activated( int ) ), this, SLOT(commitAndCloseEditor()));
    return combo; 
  }
  else if(idx == 2)
  {
    QTimeEdit *timeEdit = new QTimeEdit(parent);
		timeEdit->setDisplayFormat("mm:ss");
    connect(timeEdit, SIGNAL(editingFinished()), this, SLOT(commitAndCloseEditor()));
    return timeEdit;
  }
  else
  {
    return QItemDelegate::createEditor(parent, option, index);
  }
}
 
void TableCellDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
  int idx = index.column();	
  if(idx == 1)
  {
    QComboBox *combo = qobject_cast<QComboBox *>(editor);
    combo->setCurrentIndex(index.model()->data(index).toInt());
  }
  else if(idx == 2)
  {
    int secs = index.model()->data(index, Qt::DisplayRole).toInt();
    QTimeEdit *timeEdit = qobject_cast<QTimeEdit *>(editor);
    timeEdit->setTime(QTime(0, secs / 60, secs % 60));
  }
  else
  {
    QItemDelegate::setEditorData(editor, index);
  }
}
 
void TableCellDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
  int idx = index.column();	
  if(idx == 1)
  {
    QComboBox *combo = qobject_cast<QComboBox *>(editor);
    model->setData(index, combo->currentIndex());		
  }
  else if(idx == 2)
  {
    QTimeEdit *timeEdit = qobject_cast<QTimeEdit *>(editor);
    QTime time = timeEdit->time();
    int secs = (time.minute() * 60) + time.second();
    model->setData(index, secs);
  }
  else
  {
    QItemDelegate::setModelData(editor, model, index);
  }
}
 
void TableCellDelegate::commitAndCloseEditor()
{
  emit commitData(qobject_cast<QWidget *>(sender()));
}

TableCellDelegate::TableCellDelegate(QObject *parent) : QItemDelegate(parent)
{
}

void TableCellDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
  int idx = index.column();
  if(idx == 1)
  {
    // Display first QComboBox item ???
  }
  else if(idx == 2)
  {
    int secs = index.model()->data(index, Qt::DisplayRole).toInt();
    QString text = QString("%1:%2")
                       .arg(secs / 60, 2, 10, QChar('0'))
                       .arg(secs % 60, 2, 10, QChar('0'));

     QStyleOptionViewItem myOption = option;
     myOption.displayAlignment = Qt::AlignRight | Qt::AlignVCenter;

     drawDisplay(painter, myOption, myOption.rect, text);
     drawFocus(painter, myOption, myOption.rect);
  }
  else
  {
     QItemDelegate::paint(painter, option, index);
  }
}

QWidget *TableCellDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) 

const
{
  int idx = index.column();
  if(idx == 1)
  {
    QComboBox *combo = new QComboBox( parent );
    combo->addItem("Item 1");
    combo->addItem("Item 2");
    combo->addItem("Item 3");
    combo->setCurrentIndex(0);
    connect(combo, SIGNAL( activated( int ) ), this, SLOT(commitAndCloseEditor()));
    return combo; 
  }
  else if(idx == 2)
  {
    QTimeEdit *timeEdit = new QTimeEdit(parent);
		timeEdit->setDisplayFormat("mm:ss");
    connect(timeEdit, SIGNAL(editingFinished()), this, SLOT(commitAndCloseEditor()));
    return timeEdit;
  }
  else
  {
    return QItemDelegate::createEditor(parent, option, index);
  }
}

void TableCellDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
  int idx = index.column();	
  if(idx == 1)
  {
    QComboBox *combo = qobject_cast<QComboBox *>(editor);
    combo->setCurrentIndex(index.model()->data(index).toInt());
  }
  else if(idx == 2)
  {
    int secs = index.model()->data(index, Qt::DisplayRole).toInt();
    QTimeEdit *timeEdit = qobject_cast<QTimeEdit *>(editor);
    timeEdit->setTime(QTime(0, secs / 60, secs % 60));
  }
  else
  {
    QItemDelegate::setEditorData(editor, index);
  }
}

void TableCellDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
  int idx = index.column();	
  if(idx == 1)
  {
    QComboBox *combo = qobject_cast<QComboBox *>(editor);
    model->setData(index, combo->currentIndex());		
  }
  else if(idx == 2)
  {
    QTimeEdit *timeEdit = qobject_cast<QTimeEdit *>(editor);
    QTime time = timeEdit->time();
    int secs = (time.minute() * 60) + time.second();
    model->setData(index, secs);
  }
  else
  {
    QItemDelegate::setModelData(editor, model, index);
  }
}

void TableCellDelegate::commitAndCloseEditor()
{
  emit commitData(qobject_cast<QWidget *>(sender()));
}

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[whitefurrows]

Can this be done or is it so hard because i dont get a tip?

[whitefurrows]

1. How can i show the first item in the QComboBox if editing finished and not the model value?

I know how can i do that, but how can i figure out the currentText from the ComboBox?

QStyleOptionComboBox *box = new QStyleOptionComboBox();
		box->palette = option.palette;
		box->rect = option.rect;
		box->state = QStyle::State_Active | QStyle::State_Enabled;
		box->currentText = "Text"; //comboBox->currentText();
		box->frame = false;
		painter->save();
		QApplication::style()->drawControl(QStyle::CE_ComboBoxLabel, box, painter);
		painter->restore();

QStyleOptionComboBox *box = new QStyleOptionComboBox();
		box->palette = option.palette;
		box->rect = option.rect;
		box->state = QStyle::State_Active | QStyle::State_Enabled;
		box->currentText = "Text"; //comboBox->currentText();
		box->frame = false;
		painter->save();
		QApplication::style()->drawControl(QStyle::CE_ComboBoxLabel, box, painter);
		painter->restore();

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I have try this, but thats not right:

qDebug() << "DisplayRole: " << index.data(Qt::DisplayRole).toString();
qDebug() << "EditRole: " << index.data(Qt::EditRole).toString();

qDebug() << "DisplayRole: " << index.data(Qt::DisplayRole).toString();
qDebug() << "EditRole: " << index.data(Qt::EditRole).toString();

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[whitefurrows]

Hi,

now i have try to set the Qt :: DisplayRole within setModelData() like this:

model->setData(index, combo->currentText(), Qt::DisplayRole);

model->setData(index, combo->currentText(), Qt::DisplayRole);

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and write within paint() like this:

QStyleOptionComboBox *box = new QStyleOptionComboBox();
		box->palette = option.palette;
		box->rect = option.rect;
		box->state = QStyle::State_Active | QStyle::State_Enabled;
		box->currentText = index.data(Qt::DisplayRole).toString();
		box->frame = false;
		painter->save();
		QApplication::style()->drawControl(QStyle::CE_ComboBoxLabel, box, painter);
		painter->restore();

QStyleOptionComboBox *box = new QStyleOptionComboBox();
		box->palette = option.palette;
		box->rect = option.rect;
		box->state = QStyle::State_Active | QStyle::State_Enabled;
		box->currentText = index.data(Qt::DisplayRole).toString();
		box->frame = false;
		painter->save();
		QApplication::style()->drawControl(QStyle::CE_ComboBoxLabel, box, painter);
		painter->restore();

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But i cant display the text. Must i do anything else in createEditor() or setEditorData()?

Please help me! Thanks!