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[Bug 1407353] [NEW] Maximized emacs window gradually shrinks

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Public bug reported:

lsb_release -rd:
Description:    Ubuntu 14.04.1 LTS
Release:        14.04

Package: emacs24
Version: 24.3+1-2ubuntu1

Package: kde-window-manager
Version: 4:4.11.11-0ubuntu0.2

I opened an emacs window and maximized it vertically.  I then switched
repeatedly between a "Customize Option" buffer and the *scratch* buffer.
Every buffer switch caused the window to shrink slightly by moving the
lower edge up.  This continued until the window only contains only 2
lines of each buffer.  No doubt the window manager is involved; I am
using kwin (version above).

The output of "xwininfo -id 0x3000112" below shows the problem.  Note
that the height and corners fields change every time, but geometry
changes every other time.

[Maximize the scratch window]

xwininfo: Window id: 0x3000112 "emacs@eagle"

  Absolute upper-left X:  576
  Absolute upper-left Y:  25
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 581
  Height: 732
  Depth: 24
  Visual: 0x20
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x22 (installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +576+25  -209+25  -209-11  +576-11
  -geometry 79x51+572+0

[Switch to the customize buffer]

xwininfo: Window id: 0x3000112 "emacs@eagle"

  Absolute upper-left X:  576
  Absolute upper-left Y:  25
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 581
  Height: 730
  Depth: 24
  Visual: 0x20
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x22 (installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +576+25  -209+25  -209-13  +576-13
  -geometry 79x51+572+0

[Switch to the scratch buffer]

xwininfo: Window id: 0x3000112 "emacs@eagle"

  Absolute upper-left X:  576
  Absolute upper-left Y:  25
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 581
  Height: 719
  Depth: 24
  Visual: 0x20
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x22 (installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +576+25  -209+25  -209-24  +576-24
  -geometry 79x50+572+0

[Switch to the customize buffer]

xwininfo: Window id: 0x3000112 "emacs@eagle"

  Absolute upper-left X:  576
  Absolute upper-left Y:  25
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 581
  Height: 717
  Depth: 24
  Visual: 0x20
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x22 (installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +576+25  -209+25  -209-26  +576-26
  -geometry 79x50+572+0

I would expect one of two behaviours.  Option 1 would be to swap between
two different window sizes, each containing the maximum number of lines
for that buffer.  Option 2 would be to keep the lower edge of the window
at the bottom of the screen and absorb the difference in height by
changing the size of some internal padding.  Option 1 would be more
consistent with the current resize behaviour.

This problem seems to be due to the change in height of the toolbar.  If
I disable the toolbar (menu-bar-showhide-tool-bar-menu-customize-
disable), the problem goes away.  If I put the toolbar on the left side
or right size and maximize the window fully, the window shrinks
horizontally instead of vertically.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: emacs24 24.3+1-2ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Jan  3 21:21:19 2015
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/emacs24-x
InstallationDate: Installed on 2013-08-13 (508 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
SourcePackage: emacs24
UpgradeStatus: Upgraded to trusty on 2014-04-23 (254 days ago)

** Affects: emacs24 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to emacs24 in Ubuntu.
https://bugs.launchpad.net/bugs/1407353

Title:
  Maximized emacs window gradually shrinks

Status in emacs24 package in Ubuntu:
  New

Bug description:
  lsb_release -rd:
  Description:    Ubuntu 14.04.1 LTS
  Release:        14.04

  Package: emacs24
  Version: 24.3+1-2ubuntu1

  Package: kde-window-manager
  Version: 4:4.11.11-0ubuntu0.2

  I opened an emacs window and maximized it vertically.  I then switched
  repeatedly between a "Customize Option" buffer and the *scratch*
  buffer.  Every buffer switch caused the window to shrink slightly by
  moving the lower edge up.  This continued until the window only
  contains only 2 lines of each buffer.  No doubt the window manager is
  involved; I am using kwin (version above).

  The output of "xwininfo -id 0x3000112" below shows the problem.  Note
  that the height and corners fields change every time, but geometry
  changes every other time.

  [Maximize the scratch window]

  xwininfo: Window id: 0x3000112 "emacs@eagle"

    Absolute upper-left X:  576
    Absolute upper-left Y:  25
    Relative upper-left X:  0
    Relative upper-left Y:  0
    Width: 581
    Height: 732
    Depth: 24
    Visual: 0x20
    Visual Class: TrueColor
    Border width: 0
    Class: InputOutput
    Colormap: 0x22 (installed)
    Bit Gravity State: NorthWestGravity
    Window Gravity State: NorthWestGravity
    Backing Store State: NotUseful
    Save Under State: no
    Map State: IsViewable
    Override Redirect State: no
    Corners:  +576+25  -209+25  -209-11  +576-11
    -geometry 79x51+572+0

  [Switch to the customize buffer]

  xwininfo: Window id: 0x3000112 "emacs@eagle"

    Absolute upper-left X:  576
    Absolute upper-left Y:  25
    Relative upper-left X:  0
    Relative upper-left Y:  0
    Width: 581
    Height: 730
    Depth: 24
    Visual: 0x20
    Visual Class: TrueColor
    Border width: 0
    Class: InputOutput
    Colormap: 0x22 (installed)
    Bit Gravity State: NorthWestGravity
    Window Gravity State: NorthWestGravity
    Backing Store State: NotUseful
    Save Under State: no
    Map State: IsViewable
    Override Redirect State: no
    Corners:  +576+25  -209+25  -209-13  +576-13
    -geometry 79x51+572+0

  [Switch to the scratch buffer]

  xwininfo: Window id: 0x3000112 "emacs@eagle"

    Absolute upper-left X:  576
    Absolute upper-left Y:  25
    Relative upper-left X:  0
    Relative upper-left Y:  0
    Width: 581
    Height: 719
    Depth: 24
    Visual: 0x20
    Visual Class: TrueColor
    Border width: 0
    Class: InputOutput
    Colormap: 0x22 (installed)
    Bit Gravity State: NorthWestGravity
    Window Gravity State: NorthWestGravity
    Backing Store State: NotUseful
    Save Under State: no
    Map State: IsViewable
    Override Redirect State: no
    Corners:  +576+25  -209+25  -209-24  +576-24
    -geometry 79x50+572+0

  [Switch to the customize buffer]

  xwininfo: Window id: 0x3000112 "emacs@eagle"

    Absolute upper-left X:  576
    Absolute upper-left Y:  25
    Relative upper-left X:  0
    Relative upper-left Y:  0
    Width: 581
    Height: 717
    Depth: 24
    Visual: 0x20
    Visual Class: TrueColor
    Border width: 0
    Class: InputOutput
    Colormap: 0x22 (installed)
    Bit Gravity State: NorthWestGravity
    Window Gravity State: NorthWestGravity
    Backing Store State: NotUseful
    Save Under State: no
    Map State: IsViewable
    Override Redirect State: no
    Corners:  +576+25  -209+25  -209-26  +576-26
    -geometry 79x50+572+0

  I would expect one of two behaviours.  Option 1 would be to swap
  between two different window sizes, each containing the maximum number
  of lines for that buffer.  Option 2 would be to keep the lower edge of
  the window at the bottom of the screen and absorb the difference in
  height by changing the size of some internal padding.  Option 1 would
  be more consistent with the current resize behaviour.

  This problem seems to be due to the change in height of the toolbar.
  If I disable the toolbar (menu-bar-showhide-tool-bar-menu-customize-
  disable), the problem goes away.  If I put the toolbar on the left
  side or right size and maximize the window fully, the window shrinks
  horizontally instead of vertically.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: emacs24 24.3+1-2ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
  Uname: Linux 3.13.0-43-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Sat Jan  3 21:21:19 2015
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/emacs24-x
  InstallationDate: Installed on 2013-08-13 (508 days ago)
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  SourcePackage: emacs24
  UpgradeStatus: Upgraded to trusty on 2014-04-23 (254 days ago)

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