[PyKDE] Aligning Text in a Table

[Bob Parnes]

On Sat, Jun 28, 2003 at 03:10:40PM +0200, Simon Edwards wrote:
> Hi,
> 
> > Thanks for your response. I got lost trying to follow your idea. In the
> > past I have subclassed my own classes and reimplemented methods in order 
> > to make changes suiting the subclass. But here I cannot even make the
> > simplest reimplementation of paintCell. For example, the method,
> > 
> >   def paintCell(self,p,row,col,r,selected):
> >       QTable.paintCell(self,p,row,col,r,selected)
> 
> Does this work?:
> 
> def paintCell(self,p,row,col,r,selected,cg):
>     QTable.paintCell(self,p,row,col,r,selected,cg)
> 
> Maybe PyQt doesn't have the 6 arg version (it's depreciated BTW),

Yes, it does work, although I used Phil Thompson's version.

> 
> > Furthermore, I don't know how to identify the QPainter object that Qt
> > passes. I could not find any place in the documentation that describes
> > how to do this. In my attempt above, I created one.
> 
> errrr... You don't need to identify anything. YOu just draw with the QPainter 
> that you get.
> 
> cheers,
> 
> -- 
> Simon Edwards             | Guarddog Firewall
> simon at simonzone.com       | http://www.simonzone.com/software/
> Nijmegen, The Netherlands | "ZooTV? You made the right choice."
> 

I did not read your post carefully enough and thought that I had to make
the call to paintCell. However, it is confusing, because now I do not
understand the purpose of the arguments beyond the row and column.

Anyway, I did manage to successfully draw an example, so long as the
code was in the paintCell implementation. But I could not write 
to the table at a later time. The attached code, where the pushbutton is
supposed to display the data, shows my attempt. Qt returns a new
QPainter object, but it doesn't draw. So I am still missing something.

I really appreciate your help, and I hope I can see this through
successfully. It has been an education for me.

-- 
Bob Parnes
rparnes at megalink.net
-------------- next part --------------
#!/usr/bin/env python

import sys
from qt import *
from qttable import QTable

class newTable(QTable):
  def __init(self,parent,title):
    QTable.__init__(self,parent,title)

  def drawText(self):
    for row in range(3):
      for col in range(3):
        r = self.cellRect(row,col)
        if row ==1 and col == 1: print 'p,r at (1,1):',self.p,r
        if col == 1:
          self.p.drawText(r,Qt.AlignRight,'text%d%d' % (row,col))
        else:
          self.p.drawText(r,Qt.AlignLeft,'text%d%d' % (row,col))
        
  def paintCell(self,p,row,col,r,selected,cg=None):
    self.p = p
    if cg:
      QTable.paintCell(self,p,row,col,r,selected,cg)
    else:
      QTable.paintCell(self,p,row,col,r,selected)
#    r = self.cellRect(row,col)
#    if col == 1:
#      p.drawText(r,Qt.AlignRight,'text%d%d' % (row,col))
#    else:
#      p.drawText(r,Qt.AlignLeft,'text%d%d' % (row,col))

class Form1(QWidget):
    def __init__(self,parent = None,name = None,fl = 0):
        QWidget.__init__(self,parent,name,fl)

        if not name:
            self.setName("Form1")

        self.table = newTable(self,"table")
        self.table.setGeometry(QRect(50,60,335,104))
        self.table.setNumRows(3)
        self.table.setNumCols(3)
        self.pb = QPushButton(self,'getData')

        self.connect(self.pb,SIGNAL('clicked()'),self.getData)
        self.languageChange()

        self.resize(QSize(458,258).expandedTo(self.minimumSizeHint()))

    def getData(self):
        self.table.drawText()
        
    def languageChange(self):
        self.setCaption(self.tr("Alignment Test"))
        self.pb.setText(self.tr("Display Data"))

if __name__ == "__main__":
    a = QApplication(sys.argv)
    QObject.connect(a,SIGNAL("lastWindowClosed()"),a,SLOT("quit()"))
    w = Form1()
    a.setMainWidget(w)
    w.show()
    a.exec_loop()