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Bug#401184: libqt4-gui: Bounding box problem with QGraphicsLineItem and QGraphicsScene QGraphicsView



Package: libqt4-gui
Version: 4.2.1-2
Severity: normal

I have a problem with the bounding box of QGraphicsLineItem when the
line is vertical. In my application I draw horizontal line that can be
moved to represent tasks in a graph. Between those lines, I draw arrow
using other lines. When I move the tasks, sometimes an arrow becomes a
vertical line and if I continue to move the tasks in such a way that
the
line remains vertical but is translated horizontally, there is a
problem. The problem is that a little part in the middle of the line
remains at an older position while the remaining parts of the line are
at
the correct position. So there seems to be a problem with the bounding
box. I have tested on a pc at my work that runs Fedora Core also in
x86,
so it may not be a PowerPC specific problem.
I can join a screen capture illustrating the problem.

-- System Information:
Debian Release: 4.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: powerpc (ppc)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-2-powerpc
Locale: LANG=fr_FR, LC_CTYPE=fr_FR (charmap=ISO-8859-1) (ignored: LC_ALL set to fr_FR)

Versions of packages libqt4-gui depends on:
ii  fontconfig                   2.4.1-2     generic font configuration library
ii  libaudio2                    1.8-2       The Network Audio System (NAS). (s
ii  libc6                        2.3.6.ds1-8 GNU C Library: Shared libraries
ii  libfontconfig1               2.4.1-2     generic font configuration library
ii  libfreetype6                 2.2.1-5     FreeType 2 font engine, shared lib
ii  libgcc1                      1:4.1.1-20  GCC support library
ii  libgl1-mesa-glx [libgl1]     6.5.1-0.4   A free implementation of the OpenG
ii  libglib2.0-0                 2.12.4-2    The GLib library of C routines
ii  libglu1-mesa [libglu1]       6.5.1-0.4   The OpenGL utility library (GLU)
ii  libice6                      1:1.0.1-2   X11 Inter-Client Exchange library
ii  libjpeg62                    6b-13       The Independent JPEG Group's JPEG 
ii  libmng1                      1.0.9-1     Multiple-image Network Graphics li
ii  libpng12-0                   1.2.13-4    PNG library - runtime
ii  libqt4-core                  4.2.1-2     Qt 4 core non-GUI functionality ru
ii  libsm6                       1:1.0.1-3   X11 Session Management library
ii  libstdc++6                   4.1.1-20    The GNU Standard C++ Library v3
ii  libx11-6                     2:1.0.3-4   X11 client-side library
ii  libxcursor1                  1.1.7-4     X cursor management library
ii  libxext6                     1:1.0.1-2   X11 miscellaneous extension librar
ii  libxfixes3                   1:4.0.1-5   X11 miscellaneous 'fixes' extensio
ii  libxinerama1                 1:1.0.1-4.1 X11 Xinerama extension library
ii  libxrandr2                   2:1.1.0.2-5 X11 RandR extension library
ii  libxrender1                  1:0.9.1-3   X Rendering Extension client libra
ii  libxt6                       1:1.0.2-2   X11 toolkit intrinsics library
ii  zlib1g                       1:1.2.3-13  compression library - runtime

Versions of packages libqt4-gui recommends:
ii  qt4-qtconfig                  4.2.1-2    Qt 4 configuration tool

-- no debconf information

Attachment: capture5.png
Description: PNG image


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