Bug 308633 - Window tab group separated in shaded windows
Summary: Window tab group separated in shaded windows
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: window-tabbing (show other bugs)
Version: 4.9.2
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-10-19 02:20 UTC by o2029162
Modified: 2012-11-01 20:48 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In: 4.9.3
Sentry Crash Report:
thomas.luebking: ReviewRequest+


Attachments
fix (1.42 KB, patch)
2012-10-21 21:18 UTC, Thomas Lübking
Details

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Description o2029162 2012-10-19 02:20:32 UTC
Creating a tab group with shaded windows doesn't work: The tab group is splitted and the windows are resized to about 150px height

Reproducible: Always

Steps to Reproduce:
1. Open two dolphin windows
2. Shade them
3. Group them in tabs
Actual Results:  
Both windows resized and tab group removed

Expected Results:  
A new tab group is created and windows stay shaded
Comment 1 Thomas Lübking 2012-10-19 19:09:06 UTC
works here

- what's your focus policy and do you use hover shading?
- How do you group the tabs (drag or use the context menu) - does the alternative way differ?
- is it limited to dolphin or does it affect all applications?
Comment 2 o2029162 2012-10-19 20:11:55 UTC
(In reply to comment #1)
> works here
> 
> - what's your focus policy and do you use hover shading?
> - How do you group the tabs (drag or use the context menu) - does the
> alternative way differ?
> - is it limited to dolphin or does it affect all applications?

- Focus follows mouse, but I can reproduce with any of them. I use it, but it also occurs if it is disabled here
- I've tried drag, auto and context menu. Same result
- Any application. I first noticed it in kopete since it is the one where I use both features most of the time.
Comment 3 o2029162 2012-10-19 20:17:48 UTC
I've forgot to add this in my reply.

I've checked this again and it is generalized in this order for many settings I've tried (even as a new user):
- Open two windows
- Group them
- Shade the group
Comment 4 Thomas Lübking 2012-10-19 20:25:32 UTC
=)
You might or might not have noticed, but that's the reverse order (and reproducible)
Comment 5 o2029162 2012-10-19 20:34:40 UTC
I've just checked it with everything set to manual (no hover unshade, no auto group...).
It happens when I shade the group. If I group shaded windows, it works. Then, I unshade it; ok, works. I shade it again: bug.

Doesn't it happen like this in your case? I'm a bit confused
Comment 6 Thomas Lübking 2012-10-19 20:49:52 UTC
The bug occurs here is i group two unshaded windows and then shade them (as you described in comment #3 but not in the original report)

The weird thing is that the geometry match fails for

qDebug() << c->geometry() << main->geometry() << bool(main == m_current);

QRect(225,343 878x23) QRect(225,343 878x27) true 
QRect(225,343 878x27) QRect(225,343 878x23) false

It seems like the current window cannot shrink under that size.

The issue is related to the oxygen border setting, set it to "No Border" and it's gone.

@Hugo
Do you have special casing code for the dimensions of shaded active and inactive windows?
Comment 7 Wonko 2012-10-21 11:07:50 UTC
I also ran into this problem, and it's extremely annoying for me. I'm used to have a Dolphin window (having two tabs, each with a split view) grouped to a Konsole, and most of the time they are shaded so they do not take up space. Since 4.9.2 this is broken, as reported here. Hope this will be fixed soon.

Thanks Thomas for finding the workaround of setting the border size to zero. This is also a problem, because, well, there are no borders :) But most of the time I resize windows with Alt-Right mouse button anyway, so I'll think I'll use this for now.
Comment 8 Hugo Pereira Da Costa 2012-10-21 11:25:23 UTC
@Thomas
Not sure I understand the question, but here is attempted answer:
if the question is whether geometry (::LayoutMetric) changes between shaded and unshaded window, in oxygen, the answer is yes: 
LM_BorderBottom is 0 for shaded windows and non zero for unshaded. 
Left and right are unchanged.

if the question is whether geometry changes between active and inactive shaded windows, answer is no. Not that I know of. In general: no geometry change between active and inactive window, whatever the other state of the window.

Hope this helps,

Hugo
Comment 9 Hugo Pereira Da Costa 2012-10-21 11:26:49 UTC
Question: ok NoBorder works. Does "no side borders" work ? 
If not, indeed the issue might be due to the change in LM_BorderBottom between shaded and unshaded windows. (right ?)
Comment 10 Wonko 2012-10-21 12:11:11 UTC
(In reply to comment #9)

No, "no side borders" also triggers the problem.
Comment 11 Thomas Lübking 2012-10-21 12:29:28 UTC
It's likely about when the shade state is updated compared to the borders query (shading also breaks more than 3 grouped windows apart)

Commenting the shaded special case on the return "fixes" it.

How do i run into the (respectWindowState && maximized) condition?
Comment 12 Hugo Pereira Da Costa 2012-10-21 12:33:26 UTC
@Thomas:
with any maximized window, I think.
The  "respect window state" is on by default
it is off, (I think) when you click somewhere that you can move/resize maximized window
(and maybe this option is gone now ...)
Comment 13 Hugo Pereira Da Costa 2012-10-21 12:33:43 UTC
... this was a kwin option iirc
Comment 14 Thomas Lübking 2012-10-21 13:15:50 UTC
It's still there but has no impact (ie. maximizing doesn't break ever) so it's about when the border is updated compared to the shading.
Gonna have a look.
Comment 15 Thomas Lübking 2012-10-21 21:18:41 UTC
Created attachment 74707 [details]
fix

Attached patch.
Seems to not cause side effects and carry only ignorable overhead.
-> Gonna create review request when having a somewhat aligned branch again, but you can test if you want.
Comment 16 Thomas Lübking 2012-10-25 18:25:27 UTC
https://git.reviewboard.kde.org/r/107040/
Comment 17 Thomas Lübking 2012-11-01 20:48:21 UTC
Git commit 992fae00acf14d6c5ae3bc427e51eb32a9c0c32c by Thomas Lübking.
Committed on 21/10/2012 at 17:42.
Pushed by luebking into branch 'KDE/4.9'.

update deco borders on shade before aligning tabs
FIXED-IN: 4.9.3

M  +5    -3    kwin/client.cpp

http://commits.kde.org/kde-workspace/992fae00acf14d6c5ae3bc427e51eb32a9c0c32c