[PyQt] one column not wrapping in QTableView

[Mark Summerfield]

On 2008-01-14, Kerri Reno wrote:
> Thanks, Mark, that's closer.  But it still only shows part of the note,
> 'emergency broadcast system'.

Ah, what you need is the single shot timer trick. Add this line at the
end of the notesView initializer:

        QTimer.singleShot(0, self.resizeRowsToContents)

After the initializer has finished (and the form has therefore been
created and shown) this timer will time out and _then_
resizeRowsToContents will be called at which point it will show all the
text.

> On 1/12/08, Mark Summerfield <mark at qtrac.eu> wrote:
> > On 2008-01-11, Kerri Reno wrote:
> > > Below is my code.  The first column wraps, but the third column
> > > doesn't, and shows ....
> > >
> > > What am I doing wrong?  I would like both columns to wrap.
> >
> > (1) After you've set word wrap you need to call:
> >
> >    self.setTextElideMode(Qt.ElideNone)
> >
> >    This stops PyQt making long texts short by inserting an ellipsis
> >
> > (2) Do not call resizeColumnsToContents()
> >
> >     The call you have is pointless anyway because you resize before
> >     you've got any data, but if you call this after you have data the
> >     columns will simply grow as wide as needed and you'll get a
> >     horizontal scrollbar
> >
> > (3) Call resizeRowsToContents() whenever the model's data changes (or at
> >     least after the initial data is loaded)
> >
> >     This is to ensure that each row is tall enough to show the wrapped
> >     text.
> >
> > from PyQt4.QtGui import *
> > from PyQt4.QtCore import *
> > import sys
> >
> > class notesView(QTableView):
> >
> >     def __init__(self,parent, notes):
> >         QTableView.__init__(self,parent)
> >         self.setSizePolicy(QSizePolicy.Preferred,
> >             QSizePolicy.Fixed)
> >
> >         v = self.verticalHeader()
> >         v.hide()
> >
> >         self.model = notesModel(notes)
> >         self.setWordWrap(True)
> >         self.setTextElideMode(Qt.ElideNone) # ADD
> > #        self.resizeRowsToContents()
> > #        self.resizeColumnsToContents()
> >         self.setModel(self.model)
> >
> > class notesModel(QAbstractTableModel):
> >
> >     def __init__(self, notes):
> >         QAbstractTableModel.__init__(self)
> >         self.notes = notes
> >
> >     def flags(self,index):
> >         if not index.isValid():
> >             return Qt.ItemIsEnabled
> >         return Qt.ItemFlags(QAbstractTableModel.flags(self,index))
> >
> >     def rowCount(self, index=QModelIndex()):
> >         return len(self.notes)
> >
> >     def columnCount(self,index=QModelIndex()):
> >         return 3
> >
> >     def headerData(self,section,orientation,role=Qt.DisplayRole):
> >         if role == Qt.TextAlignmentRole:
> >             if orientation == Qt.Horizontal:
> >                 return QVariant(int(Qt.AlignHCenter|Qt.AlignVCenter))
> >             return QVariant(int(Qt.AlignRight|Qt.AlignVCenter))
> >         if role != Qt.DisplayRole:
> >             return QVariant()
> >         if orientation == Qt.Horizontal:
> >             if section == 0:
> >                 return QVariant('Date')
> >             elif section == 1:
> >                 return QVariant('Author')
> >             elif section == 2:
> >                 return QVariant('Note')
> >         return QVariant(int(section+1))
> >
> >     def data(self,index,role=Qt.DisplayRole):
> >         if not index.isValid() or not (0 <= index.row() < len(self.notes
> > )):
> >             return QVariant()
> >
> >         note = self.notes[index.row()]
> >         column = index.column()
> >
> >         if role == Qt.DisplayRole:
> >             if column ==  0:
> >                 return QVariant(QString(note['stamp']))
> >             elif column == 1:
> >                 return QVariant(QString("%1,
> > %2").arg(note['last_name'],note['first_name']))
> >             elif column == 2:
> >                 return QVariant(QString(note['note']))
> >         elif role == Qt.TextAlignmentRole:
> >             return QVariant(int(Qt.AlignLeft|Qt.AlignVCenter))
> >
> >         return QVariant()
> >
> > if __name__ == '__main__':
> >
> >     app = QApplication(sys.argv)
> >     form = QDialog()
> >     notes_list = [{'id':1,
> >             'stamp': '1/3/2008 4:31:04 PM',
> >             'last_name':'Blow',
> >             'first_name':'Joe',
> >             'note':'This is a test of the emergency broadcast
> > system.  This
> > is only a test.'}]
> >     notes = notesView(form, notes_list)
> >     notes.resizeRowsToContents() # ADD
> >     notes.setMinimumWidth(400)
> >     notes.setMinimumHeight(200)
> >     form.show()
> >     app.exec_()
> >
> >
> >
> > --
> > Mark Summerfield, Qtrac Ltd., www.qtrac.eu



-- 
Mark Summerfield, Qtrac Ltd., www.qtrac.eu