Red Hat Bugzilla – Bug 208406
Transparent icon background rendered black
Last modified: 2007-11-30 17:11:44 EST
Description of problem: The "dx-4.4.4-2.1.fc6" package contains an icon "dx.xpm" which has a grey background (see bug 207841). After setting the uniform grey background color to "none" in the "XPM" file to better blend with the "GOME" menu button ("Applications" -> "Graphics" -> "OpenDX"), the icon is rendered correctly in the menu but the application icon in the title bar of the main "metacity" window now has a black background. The same holds for the corresponding entries in the window list (lower "GNOME" panel). The embedding of "XPM" icons with transparent background in "GTK2" widgets seems to have a problem here. Version-Release number of selected component (if applicable): gtk2-2.10.4-2.fc6 How reproducible: Always Steps to Reproduce: 1. Launch "dx" with "dx.xpm" modified to have a transparent background. Actual results: Application icon rendered correctly with transparent background in the "GNOME" menu but with black background in both "metacity" title bar and "GNOME" window list. Expected results: Application icon rendered with transparent background everywhere. Additional info: None
Created attachment 138621 [details] test app
Your icon works fine with this little test app, so I guess this must be an issue with dx.
The test program actually works, but it doesn't allow a conclusive judgement. "dx" is not a "GTK" based application as yours but a "Motif" based one. Nevertheless, application icons have to be rendered correctly by window manager (here "GTK" based "metacity") and desktop utilities like the ("GNOME" panel) window list applet regardless of the toolkit which the application uses. Of course, this reasoning also holds for plain "X/Athena" applications etc. In the case of "dx", "dx.xpm" gets written out by an "sprintf(...)" command. I have to look into that in more detail, but for the time being, neither of both possibilities is ruled out.
Assuming an "OpenDX" issue, bug reported upstream, see: http://www.opendx.org/bugs/view.php?id=227