[PyKDE] custom QListView

[Tuvi, Selim]

Hi, we used a little different approach and did not use a QLineEdit but maybe you can get some ideas from it. The code is based on the PropertyEditor class of the Qt Designer.

Sorry for the lack of comments.

-Selim

Selim Tuvi, Research Engineering Group, SLAC
GLAST, I&T Online, MS 98
Tel:650-926-3376 Fax:650-926-4335
 

> -----Original Message-----
> From: pykde-bounces at mats.imk.fraunhofer.de [mailto:pykde-
> bounces at mats.imk.fraunhofer.de] On Behalf Of cbrantly at darwin.sfbr.org
> Sent: Tuesday, June 14, 2005 1:15 PM
> To: pykde at mats.imk.fraunhofer.de; cbrantly at darwin.sfbr.org;
> kpolk at darwin.sfbr.org
> Subject: [PyKDE] custom QListView
> 
> Let me start by saying that I am fairly new to Python and VERY new to
> PyQt.
> With that being said, the solution to my question is probably very simple.
> 
> I am trying to make a custom QListViewItem that contains QComboBox and
> QLineEdit widgets.  It should operate similar to a QTable, but I need the
> ability to use the tree view feature of the QListView.  I have attached a
> simplified version of my code below.  It seems to be working pretty well,
> but
> there is one problem that i have not been able to figure out.
> 
> When I resize a column, I want the QComboBox and QLineEdit to be
> automatically
> resized to fit into that column.  I set a focus proxy for the QComboBox
> and
> that seems to fix the problem with that widget, but I can't use the same
> solution for the QLineEdit because when I change the focus proxy there is
> no
> way to edit the text in the QLineEdit.  Right now the QLineEdit will
> resize
> unless it has the focus (ie. as long as you don't click in it to edit the
> text).
> 
> Anyone have a solution to this problem?  I am open to any advice, even if
> all
> you have to say is that I have gone about this in completely the wrong
> way!
> Thanks for your help.
> 
> -Chad
> 
> ===============
> 
> #!/usr/bin/env python
> 
> from qt import *
> 
> class ListViewItem(QListViewItem) :
> 
>     def __init__(self, parent, text=None) :
>         QListViewItem.__init__(self, parent, text)
>         self.listView = parent
>         self.contents = []
>         self.data = ''
> 
>     def setData(self, item):
>         self.data = item
>         for c, d in enumerate(self.data):
>             self.contents.append(c)
>             if type(d)==type([]):
>                 self.setText(c, d[0])
>             else:
>                 self.setText(c, str(d))
> 
>     def paintFocus(self, qPainter, qColorGroup, qRect):
> 
>         l, t, r, b = qRect.coords()
>         margin = self.listView.itemMargin()
>         headeroffset =
> self.listView.header().sectionRect(0).height()+margin
>         t += headeroffset
>         b += headeroffset
> 
>         for c, d in enumerate(self.data):
> 
>             if type(d)==type([]) and self.isSelected():
> 
>                 if not type(self.contents[c]) == type(QComboBox()):
>                     self.contents[c] = QComboBox(self.listView,
> "ComboBox")
>                     self.contents[c].setFocusProxy(self.listView)
>                     for i in d:
>                         self.contents[c].insertItem(i)
> 
>                 l = margin + self.listView.header().sectionPos(c)
>                 r = l + self.listView.header().sectionSize(c) - 1
>                 qRect.setCoords(l, t, r, b)
> 
>                 self.contents[c].setGeometry(qRect)
>                 self.contents[c].show()
> 
>             elif type(d)==type('') and self.isSelected():
> 
>                 if not type(self.contents[c]) == type(
>                     QLineEdit(self.listView, "LineEdit")):
>                     self.contents[c] = QLineEdit(self.listView,
> "LineEdit")
>                     self.contents[c].setText(d)
> 
>                 l = margin + self.listView.header().sectionPos(c)
>                 r = l + self.listView.header().sectionSize(c) - 1
>                 qRect.setCoords(l, t, r, b)
> 
>                 self.contents[c].setGeometry(qRect)
>                 self.contents[c].show()
> 
>         QListViewItem.paintFocus(self, qPainter, qColorGroup, qRect)
> 
>     def rtti(self):
>         return 1001
> 
>     def leave_item(self):
>         for c, d in enumerate(self.data):
>             if type(d)==type([]):
>                 self.setText(c, str(self.contents[c].currentText()))
>                 self.contents[c].hide()
>             elif type(d)==type(''):
>                 self.setText(c, str(self.contents[c].text()))
>                 self.contents[c].hide()
> 
> class ListView(QListView):
> 
>     def __init__(self, parent=None):
>         QListView.__init__(self, parent)
>         self.connect(self, SIGNAL('currentChanged( QListViewItem * )'),
>             self.item_changed)
>         self.previous_item = None
>         self.this_item = self.currentItem()
>         self.setSorting(-1)
>         self.setAllColumnsShowFocus(True)
> 
>     def item_changed(self, item):
>         self.previous_item = self.this_item
>         self.this_item = self.currentItem()
>         if not self.previous_item == None:
>             self.previous_item.leave_item()
> 
> dv = [
> [['a','b','c'], ['1', '2', '3'], 'zero'],
> [['d','e','f'], ['4', '5', '6'], 'one'],
> [['g','h','i'], ['7', '8', '9'], 'two'],
> [['j','k','l'], ['10', '11', '12'], 'three'],
> [['m','n','o'], ['13', '14', '15'], 'four'],
> [['p','q','r'], ['16', '17', '18'], 'five'],
> ]
> 
> if __name__ == "__main__":
> 
>     import sys
> 
>     qa = QApplication(sys.argv)
>     qlv = ListView()
>     qlv.addColumn("a", 200)
>     qlv.addColumn("b", 200)
>     qlv.addColumn("c", 200)
> 
>     for item in reversed(dv):
>         widget = ListViewItem(qlv, None)
>         widget.setData(item)
> 
>     qlv.show()
>     qa.setMainWidget(qlv)
>     qa.exec_loop()
> 
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