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-Subject: Adjuster
-Date: Wed, 16 Dec 1998 22:23:23 +0100
-From: Stephen Kun <stephen.kun@is.gaertner.de>
-To: Nick Ing-Simmons <nick@ni-s.u-net.com>
-
-
-
-
-3. How do I find out whether slave is a pack or grid master or if it is not a
-master (for setting packPropagate(0))
-Currently I set both on the slave.
-
-4. In setting position of drag bar, I do a lot of calcs for each motion event.
-Some could be done one for first, then used again for subsequent calls, eg:
-borderwidth of master, etc.
-I've now partially done this and store them on the widget.
-
-5. Do I need XSync and idletasks calls in Adjuster.pm?
-XSync causes a bug. idletasks doesn't make any difference in practice, from
-what I can see. I've commented both out.
-Bug when using XSync:
- Run pack_adj_4r
- Shorten whole window from right so that left window edge crosses leftmost
- adjuster. Buttons on other adjusters disappear
-
-6. Sometimes the effect given by the Restore method, is undesirable. Eg.
-for multi-columns. Then when you expand say the 1st column, the size of the
-col at the end gets reduced to 0 width when the Adjuster forces itself in.
-Then when you reduce the size of the first column again, the end col is still
-0 width.
-Better would be:
-a) put the restore functionality on a flag OR
-b) when a col is reduced because of a Restore, it saves previous width of
-its slave, and attempts to restore it when the space becomes availabe. (Sounds
-impracticable.)
-I've implemented a) with default ON. In the documentation I'll recommend the
-default for the 1st Adjuster, then OFF for the remaining.
-
-8. What about a packAdjustForget? Given that Adjuster doesn't work well for
-grid anyway, and doesn't consider other managers, that wouldn't be too bad.
-I'm not going to do this, but someone mentioned it a while ago. I can
-see me probably wanting it too at some point.
-Are you for the idea?
-
-10. Grid doesn't work well with Adjuster, didn't before either. I think
-this has to do with grid, rather than adjuster. You get the same effect
-if you grid a row of widgets, then reduce the width of the window.
-Bugs demonstrated by grid_adj_4l:
-a) there's never an Unmap event for the adjuster.
-b) after adjusting, widgets protrude into border on right.
-c) grid('Propagate', 0) on MainWindow has no effect - window shrinks/grows
- when widgets are adjusted
-d) widgets shuffle to correct position on startup
-I don't recommend use of grid with Adjust!
-
-11. Have taken out __END__ temporarily for testing
-Will put it back before publishing on the mailing list.
-
-12. Why do the adjusters in my testcases come out grey? That's not the
-default background.
-
-13. Could packAdjust return ($adj, $w). Could then do:
- my $canv = $top->Canvas()->packAdjust();
-OR
- my ($adj, $canv) = $top->Canvas()->packAdjust();
-Latter is good if you want to configure or unpack adjuster later.
-I realise this is very Kludgy, but there's no other way to get the
-Adjuster from packAdjust.
-I suppose the workaround of creating the Adjuster yourself is OK. When
-you do it by hand though, there's more chance of making mistakes, eg
-forgetting the -side (which defaults then to 'top') which would cause havoc.
-What's your opinion.
-
-14. Run the script adj_button_bug: You can't reduce size of button.
-Button can be expanded, but as soon as focus enters button, it springs back
-to its original size. Why?
-It's not important though.