Bug#211113: marked as done (libgtk2.0-0: GtkCellRenderPixbuf problem)
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From: Dj-Death <djdeath@gmx.fr>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libgtk2.0-0: GtkCellRenderPixbuf problem
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Date: Tue, 16 Sep 2003 01:46:24 +0200
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Package: libgtk2.0-0
Version: 2.2.4-1
Severity: normal
Hi,
I often use GTK+ in my developments, and I had started
to write my own cell renderers.
I think I found a kind of bug in the GtkCellRendererPixbuf but
under specials conditions.
By using the "stock_id" property to displqy stock icons, I
found that if you set this one cell with the linked porperty
to NULL, it will draws an icon anyway. Using the last used icon.
I know this is hard to understand as described here. So I had
made a little example to explain the problem showing clearly
what's wrong.
This example could be found at http://djdeath.dyndns.org/~djdeath/pixbuf_render.c
In this example I create a window containing a GtkTreeView. The GtkTreeView
is displaying only one column which contains strings describing icons from the
stock. The first row has a string set to NULL and the first time the cell renderer
is called, nothing is displayed. But the second time, when the cell renderer needs
to redraw the cell, it displays an icon. And this is the bug.
How to fix ?
The problem is this one :
When giving information to the cell renderer, the icon is set to
the GtkCellRendererPixbuf get the icon from the stock and store it in
cellpixbuf->pixbuf (the stock id is stored in cellpixbuf->stock_id),
but when switching to the next cell to redraw, the GtkCellRendererPixbuf
doesn't clear his variables. So when it check if (cellpixbuf->pixbuf != NULL)
it's TRUE ! And so it redraw the cell with the previous pixbuf, even if
cellpixbuf->stock_id is NULL.
Note that if you have the "pixbuf" property linked you won't have this problem,
because cellpixbuf->pixbuf is set for every cell, even if you don't explicitly
specify his value in the GtkTreeStore.
Hopping this little bug will be fixed soon.
Thx.
-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux traktopel 2.4.22-ck2 #7 lun sep 15 03:42:31 CEST 2003 i686
Locale: LANG=fr_FR@euro, LC_CTYPE=fr_FR@euro
Versions of packages libgtk2.0-0 depends on:
ii libatk1.0-0 1.2.4-1 The ATK accessibility toolkit
ii libc6 2.3.2-6 GNU C Library: Shared libraries an
ii libfontconfig1 2.2.1-2 generic font configuration library
ii libfreetype6 2.1.4-5 FreeType 2 font engine, shared lib
ii libglib2.0-0 2.2.3-1 The GLib library of C routines
ii libgtk2.0-common 2.2.4-1 Common files for the GTK+ graphica
ii libjpeg62 6b-8 The Independent JPEG Group's JPEG
ii libpango1.0-0 1.2.5-1 Layout and rendering of internatio
ii libpng12-0 1.2.5.0-4 PNG library - runtime
ii libtiff3g 3.5.7-2 Tag Image File Format library
ii libxft2 2.1.1-2 advanced font drawing library for
ii xlibs 4.2.1-11 X Window System client libraries
ii zlib1g 1:1.1.4-14 compression library - runtime
-- no debconf information
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Subject: Re: Bug#211113: libgtk2.0-0: GtkCellRenderPixbuf problem
From: Sebastien Bacher <seb128@debian.org>
To: 211113-done@bugs.debian.org
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Le mer, 09/06/2004 =E0 00:43 +0200, [ATR]Dj-Death a =E9crit :
> Tested with GTK+ 2.4.1. Doesnt bug anymore ;)
Ok, so bug closed :)
> I join the test file.
Thanks
Cheers,
Sebastien Bacher