If you need hotkey+click then this is the best way I've found to do it
# Implement shift-click to expand/contract
@pyqtSlot(QModelIndex)
def _on_expanded(self, index):
if self._in_shift_press:
self._in_shift_press = False
_recursive_set_expanded(self, index, True)
@pyqtSlot(QModelIndex)
def _on_collapsed(self, index):
if self._in_shift_press:
self._in_shift_press = False
_recursive_set_expanded(self, index, False)
def mousePressEvent(self, evt):
# Make shift-click expand/collapse all
if int(evt.modifiers() & Qt.ShiftModifier) != 0:
self._in_shift_press = True
try:
QTreeView.mousePressEvent(self, evt)
finally:
self._in_shift_press = False
def _recursive_set_expanded(view, root, desired):
from collections import deque
root = root.sibling(root.row(), 0)
q = deque([root])
model = view.model()
while q:
idx = q.popleft()
view.setExpanded(idx, desired)
for i in range(model.rowCount(idx)):
q.append(model.index(i,0, idx))
From: [email protected]
[mailto:[email protected]] On Behalf Of James Polk
Sent: Tuesday, April 19, 2011 2:28 PM
To: [email protected]
Subject: Re: [PyQt] Question on QTreeView, interactive
expanding/collapsing
Whoops,...just found the *-hotkey,....nevermind, lol...
--- On Tue, 4/19/11, James Polk <[email protected]> wrote:
From: James Polk <[email protected]>
Subject: Question on QTreeView, interactive expanding/collapsing
To: [email protected]
Date: Tuesday, April 19, 2011, 2:09 PM
Greetings All,
In a typical QTreeView,...the default behaviour of clicking on a "plus
box",
i.e. the branch boxes of the tree, yields a "single box open", or in the
case
of collapsing, a "single box closed" event.
Is there any way to use a keyboard modifier, like SHIFT, CTRL, and/or
ALT,
to expand or collapse the *whole* tree?
Many other similiar tree structures in other software have this feature.
For example, holding down CTRL and ALT and clicking on any box will
unfold/expand (or collapse) all nodes/branches from that node and all
below.
Is there something I'm overlooking? Is this (re-)implementable ?
Many Thanks,
-Jim
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