Bug#597844: resizing window changes game state irrevocably

[chrysn]

Package: gplanarity
Version: 16723-1
Severity: normal

when a gplanarity window is resized in a way that vertices leave the
visible area, the vertices are pushed inwards, destrying game progress.

for window managers that ignore size hints, this is easy to reproduce:
just make the window sufficiently smaller after starting a level.

for window managers that respect size hints, the steps are:

* fullscreen the window
* zoom in, maybe move points around so more points are near the edges
* unfullscreen the window
* the outer points now stick to the border of the window
* fullscreening the window again leaves them at the old window's outline

in practice, this happens if one uses a tiling window manager (even if
it respects size hints) as resizes occur frequently there, and only if
one has made good progress on a difficult level.

i'm not sure which severity to assign, as it is a form of data loss but
occurs only in rare situations.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.34-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gplanarity depends on:
ii  libatk1.0-0                  1.30.0-1    The ATK accessibility toolkit
ii  libc6                        2.11.2-6    Embedded GNU C Library: Shared lib
ii  libcairo2                    1.8.10-6    The Cairo 2D vector graphics libra
ii  libfontconfig1               2.8.0-2.1   generic font configuration library
ii  libfreetype6                 2.4.2-2     FreeType 2 font engine, shared lib
ii  libglib2.0-0                 2.24.2-1    The GLib library of C routines
ii  libgtk2.0-0                  2.20.1-1+b1 The GTK+ graphical user interface 
ii  libpango1.0-0                1.28.1-1    Layout and rendering of internatio

gplanarity recommends no packages.

gplanarity suggests no packages.

-- no debconf information

-- 
To use raw power is to make yourself infinitely vulnerable to greater powers.
  -- Bene Gesserit axiom
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