[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Launchpad Bug Tracker]

This bug was fixed in the package compiz -
1:0.9.12.3+16.04.20171116-0ubuntu1

---
compiz (1:0.9.12.3+16.04.20171116-0ubuntu1) xenial; urgency=medium

  [ Eleni Maria Stea ]
  * Added option to disable blend in grid plugin (LP: #1700859)
  * Move: add options for showing only the window shape (filled or not)
(LP: #1700859)

  [ Alberts Muktupāvels ]
  * Ensure that surfaces used by metacity theme have device scale set to
1 . (LP: #1530277) (LP: #1530277)
  * Use AnyPropertyType when getting _MOTIF_WM_HINTS property. (LP:
#1702297)

  [ Martin Wimpress ]
  * mate: Avoid artefacts of Windows Thumbnail Previews (LP: #1606369)

  [ Marco Trevisan (Treviño) ]
  * move: damage all the border area in outline mode and ignore
transparent colors (LP: #1700859)
  * grid: ignore alpha in colors when not blending, and fix animations
(LP: #1700859)
  * resize: add support for disabling transparency and avoid over-
damaging in outline mode (LP: #1700859)
  * Screen: add averageColor to get the current desktop average color
  * unity-lowgfx.ini: remove unsupported unity option

 -- Marco Trevisan (Treviño)   Thu, 16 Nov 2017 23:00:54
+

** Changed in: compiz (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Treviño]

Works here with

LANG=C apt-cache policy compiz
compiz:
  Installed: 1:0.9.12.3+16.04.20171116-0ubuntu1
  Candidate: 1:0.9.12.3+16.04.20171116-0ubuntu1
  Version table:


** Tags removed: verification-needed verification-needed-xenial
** Tags added: verification-done verification-done-xenial

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Ads20000]

I'm not sure how to reproduce this bug, how do I get to see the
'thumbnail preview' of an application on MATE?

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Brian Murray]

Hello David, or anyone else affected,

Accepted compiz into xenial-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/compiz/1:0.9.12.3+16.04.20171116-0ubuntu1
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-xenial to verification-done-xenial. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-xenial. In either case, details of your
testing will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: compiz (Ubuntu Xenial)
   Status: New => Fix Committed

** Tags added: verification-needed verification-needed-xenial

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Treviño]

** Description changed:

+ [Impact]
  With current settings, Galculator creates an unsightly additive thumbnail 
artefact which remains after thumbnail preview closes (screen capture link).
  http://www.pasteall.org/pic/show.php?id=102129
+ 
+ [Test case]
+ 1. Open GCalculator
+ 2. Verify no artifacts are done
+ 
+ [Possible regressions]
+ Shadows might be not visible
  
  # Fix
  org.compiz.profiles.mate.plugins.decor
  
  - active-shadow-x-offset 6
  + active-shadow-x-offset 2
  
  - active-shadow-y-offset 6
  + active-shadow-y-offset 2
  
  - inactive-shadow-x-offset 6
  + inactive-shadow-x-offset 2
  
  - inactive-shadow-y-offset 6
  + inactive-shadow-y-offset 2
  
  # This fix also benefits all Compiz windows, as shadows become more
  proportionally balanced.
  
  ___
  
  # Recommendation
  With current settings, thumbnails occupy almost half the screen vertically on 
a Netbook (1024x600 resolution).
  
  # Fix
  org.compiz.profiles.mate.plugins.thumbnail
  
  - thumb-size 280
  + thumb-size 256
  
  ___
  
  Edit: Simplified bug report/fix, tried to improved readability. Thanks

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Martin Wimpress]

** Changed in: ubuntu-mate
   Status: Triaged => Invalid

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  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Launchpad Bug Tracker]

This bug was fixed in the package compiz -
1:0.9.13.1+17.10.20170515-0ubuntu1

---
compiz (1:0.9.13.1+17.10.20170515-0ubuntu1) artful; urgency=medium

  [ Martin Wimpress ]
  * mate: Avoid artefacts of Windows Thumbnail Previews (LP: #1606369)

 -- Marco Trevisan (Treviño)   Mon, 15 May 2017 05:51:32
+

** Changed in: compiz (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Martin Wimpress]

** Changed in: compiz (Ubuntu)
   Status: Triaged => In Progress

** Changed in: compiz (Ubuntu)
   Status: In Progress => Fix Committed

** Branch linked: lp:~ubuntu-mate-dev/compiz/mate-tweak

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  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Csaba Nemethi]

After some more testing I came to the conclusion that proportionally
balanced shadows (as proposed by David Black) will result in improved
appearance when using a light theme (and will be OK for dark themes,
too). Also, with that fix in effect, it is sufficient to change the
value of org.compiz.profiles.mate.plugins.thumbnail.border from 12 to 15
(instead of 19) in order to completely eliminate the reported artefact.
Consequently:

Alternative solution revisited: Apply the fix proposed by David Black
AND change the value of
org.compiz.profiles.mate.plugins.thumbnail.border from 12 to 15.

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Csaba Nemethi]

The solution proposed by David Black won't eliminate all artefacts
related to the thumbnail window previews. To see this, apply the
proposed solution and then just type "wish" in a MATE-Terminal. The
resulting window has a geometry of 200x200, and the corresponding
thumbnail still gives rise to the reported artefact. Same problem with
any other top-level window having a sufficiently small size.

Alternative solution: Change
org.compiz.profiles.mate.plugins.thumbnail.border from the value 12 to
19 (or higher).

With this patch, I could no longer reproduce that annoying thumbnail
artefact, regardless of whether the change proposed by David Black was
in effect or not.

BTW: IMHO, the shadow effect generated by the original offset value of 6
(for active-shadow-x-offset, active-shadow-y-offset, inactive-
shadow-x-offset and inactive-shadow-y-offset) looks better than the one
corresponding to the proposed offset value of 2). Of course, this is
just matter of taste.

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[David Black]

** Description changed:

  With current settings, Galculator creates an unsightly additive thumbnail 
artefact which remains after thumbnail preview closes (screen capture link).
  http://www.pasteall.org/pic/show.php?id=102129
- 
  
  # Fix
  org.compiz.profiles.mate.plugins.decor
  
  - active-shadow-x-offset 6
  + active-shadow-x-offset 2
  
  - active-shadow-y-offset 6
  + active-shadow-y-offset 2
  
  - inactive-shadow-x-offset 6
  + inactive-shadow-x-offset 2
  
  - inactive-shadow-y-offset 6
  + inactive-shadow-y-offset 2
  
  # This fix also benefits all Compiz windows, as shadows become more
  proportionally balanced.
  
  ___
  
  # Recommendation
  With current settings, thumbnails occupy almost half the screen vertically on 
a Netbook (1024x600 resolution).
  
  # Fix
  org.compiz.profiles.mate.plugins.thumbnail
  
  - thumb-size 280
  + thumb-size 256
  
  ___
  
- Edit: Improved readability of above text, please ignore "# Method 2"
- mentioned below. Thanks!
+ Edit: Simplified bug report/fix, tried to improved readability. Thanks

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Title:
  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[David Black]

** Description changed:

- Further fix, and recommendation:
- 
- With current settings, Galculator creates an unsightly additive (intensity 
increases while mouse hovers over panel) thumbnail artefact, which remains 
after thumbnail preview closes (screen capture link below).
+ With current settings, Galculator creates an unsightly additive thumbnail 
artefact which remains after thumbnail preview closes (screen capture link).
  http://www.pasteall.org/pic/show.php?id=102129
  
- There's two ways to fix this.
  
- # Method 1:
+ # Fix
  org.compiz.profiles.mate.plugins.decor
  
  - active-shadow-x-offset 6
+ + active-shadow-x-offset 2
+ 
  - active-shadow-y-offset 6
+ + active-shadow-y-offset 2
+ 
  - inactive-shadow-x-offset 6
+ + inactive-shadow-x-offset 2
+ 
  - inactive-shadow-y-offset 6
- 
- + active-shadow-x-offset 2
- + active-shadow-y-offset 2
- + inactive-shadow-x-offset 2
  + inactive-shadow-y-offset 2
  
- # This method benefits all Compiz windows as shadows become more
- proportionally balanced, current setting creates larger offset shadows
- with seemingly no shadow visible top + left.
+ # This fix also benefits all Compiz windows, as shadows become more
+ proportionally balanced.
+ 
+ ___
+ 
+ # Recommendation
+ With current settings, thumbnails occupy almost half the screen vertically on 
a Netbook (1024x600 resolution).
+ 
+ # Fix
+ org.compiz.profiles.mate.plugins.thumbnail
+ 
+ - thumb-size 280
+ + thumb-size 256
+ 
+ ___
+ 
+ Edit: Improved readability of above text, please ignore "# Method 2"
+ mentioned below. Thanks!

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  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Martin Wimpress]

** Changed in: ubuntu-mate
   Status: New => Triaged

** Changed in: ubuntu-mate
   Importance: Undecided => Low

** Changed in: compiz (Ubuntu)
Milestone: xenial-updates => None

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  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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[Compiz] [Bug 1606369] Re: Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

[Martin Wimpress]

** Also affects: compiz (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: compiz (Ubuntu)
Milestone: None => xenial-updates

** Changed in: compiz (Ubuntu)
   Importance: Undecided => Low

** Changed in: compiz (Ubuntu)
 Assignee: (unassigned) => Martin Wimpress (flexiondotorg)

** Changed in: compiz (Ubuntu)
   Status: New => Triaged

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  Compiz ‘Thumbnail Window Previews’ artefacts (further fix +)

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