How to avoid a pane cover another in wx.AUI

wxPython Users
1

Hi, I also encountered this kind of flaw in aui; see an older thread:
http://lists.wxwidgets.org/cgi-bin/ezmlm-cgi?11:msp:71855

a workaround - checking the size of all panes - has been proposed by Max Landaeus, in the recent version in another thread:
http://lists.wxwidgets.org/cgi-bin/ezmlm-cgi?11:mss:73211

It seems, that it can be further refined - especially with respect to the resizing the whole frame - this way an infinite loop can be triggered - the recursion depth error is guarded with the variable renderIsListening; however, the checks for outOfRange sometimes keep beeing called until the window isn’t resized back to be enough for all panes.

Currently I use a simple solution for this - a parallel record (last_ok_size) for the last usable frame size.
init function of AUIFrame
…
self.renderIsListening=True # Max’s guarding variable
self.last_ok_size = (800,600) # some default # added

the important part of onRender function then looks like:
…
if outOfRange:
self.SetSize(self.last_ok_size) # added # sets the frame to the last size not (yet) causing problems with aui Manager

                # If any window is to small restore the previous perspective
               self._mgr.LoadPerspective(self.lastGoodPerspective)
               self._mgr.Update()
               self.Refresh()

        else:
               self.last_ok_size = self.GetSize() # added # save the usable frame size as a potential fallback
# All windows are OK save this perspective for next time
               self.lastGoodPerspective=self._mgr.SavePerspective()

                event.Skip()

However, this way the code causes a visual flicker, if the user resizes the window to a not allowed smaller size, hence this workaround will probably need some tweaking; but at least the infinite loop doesn’t seem to occur this way, which could be quite ressources-expensive.

hth,

Vlasta

···

2008/5/15, Can Xue xuecan@gmail.com:

In the AUI_DockingWindowMgr Demo, when a user dragging a pane’s border too far, then the pane may cover another.
How to avoid this by program?

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