Package: libpango1.0-0 Version: 1.20.2-2 Severity: normal -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
Hi, I’m not sure if this is a pango or cairo bug, but I’m starting here. See the simple attached program that renders a string using cairo and pango. It is written in python, but the same behaviour was observed in an C package first (binary package sm), so it is a bug in the C libraries. It should print ":-)" in relatively large letters, but I get the output as in the attached image. This does not happen at all font sizes, but only for certan spans of sizes. This bug is relatively bad for users of screen-message (sm), because it makes it non-reliable. Thanks, Joachim - -- System Information: Debian Release: lenny/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686) Kernel: Linux 2.6.24-1-686 (SMP w/1 CPU core) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages libpango1.0-0 depends on: ii libc6 2.7-11 GNU C Library: Shared libraries ii libcairo2 1.6.4-2 The Cairo 2D vector graphics libra ii libdatrie0 0.1.3-1 Double-array trie library ii libfontconfig1 2.5.0-2 generic font configuration library ii libfreetype6 2.3.5-1+b1 FreeType 2 font engine, shared lib ii libglib2.0-0 2.16.3-2 The GLib library of C routines ii libpango1.0-common 1.20.2-2 Modules and configuration files fo ii libthai0 0.1.9-3 Thai language support library ii libx11-6 2:1.0.3-7 X11 client-side library ii libxft2 2.1.12-2 FreeType-based font drawing librar ii libxrender1 1:0.9.4-1 X Rendering Extension client libra ii zlib1g 1:1.2.3.3.dfsg-12 compression library - runtime libpango1.0-0 recommends no packages. - -- no debconf information -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFINJFq9ijrk0dDIGwRAi/UAKCKzJu0pafNNn7dBuY4XdAUXHah7gCdHOjU T/vW6LZ1dH0lCxp3BkbGPpY= =I0DO -----END PGP SIGNATURE-----
#!/usr/bin/python
import gtk
import pango
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
settings = gtk.settings_get_default()
draw = gtk.DrawingArea()
draw.set_size_request(400,300)
font = pango.FontDescription()
font.set_family("sans-serif")
#font.set_size(366424)
font.set_size(300000)
layout = draw.create_pango_layout(":-)")
layout.set_font_description(font)
# alignment does not seem to matter:
layout.set_alignment(pango.ALIGN_CENTER)
def redraw(w=None,e=None):
gc = draw.get_style().fg_gc[gtk.STATE_NORMAL]
(w1,h1) = layout.get_pixel_size()
if h1>0 and w1>0:
(x,y,w2,h2) = draw.get_allocation()
draw.window.draw_layout(gc,(w2-w1)/2,(h2-h1)/2,layout)
window.add(draw)
window.show_all()
draw.connect("expose-event", redraw)
gtk.main()
<<attachment: pangobug.png>>
