[PyQt] Feature request: support for flashing characters in QTextEdit

[Henning Schröder]

Hello!

On Tue, Feb 3, 2009 at 6:00 PM, Edward K. Ream <edreamleo at gmail.com> wrote:
>
>
> On Tue, Feb 3, 2009 at 9:29 AM, Henning Schröder
> <henning.schroeder at gmail.com> wrote:
>
>> I successfully implemented parenthesis matching with
>> QTextEdit.ExtraSelection.
>
> Oh joy.
>
> Perhaps you could give me another hint.  I'm confused by the docs at
> http://doc.trolltech.com/4.4/qtextedit.html
>
> I don't understand how to specify selection and text format for
> ExtraSelection elements: the ExtraSelection class seems to have neither ctor
> nor settors.

I do something like that:

tc = my_textedit.textCursor()
tc.setPosition(start_pos)
tc.setPosition(end_pos, QTextCursor.KeepAnchor)
sel = QTextEdit.ExtraSelection()
sel.cursor = tc
se.format.setForeground(QColor.red)
sel_list.append(sel) # keep the references
my_textedit.setExtraSelections(sel_list)

You can connect cursorPositionChanged() to a method which checks if
the current char is a bracket. Then you create an extra selection.
Either you remove the extra selection from your extra selection list
if the position changed again or you use QTimer.singleShot

The above code is not tested. If it does not work I can upload my
editor widget code.

Greets
Henning