On Fri, May 04, 2018 at 09:25:44AM -0000, psp...@mail.bg wrote: > During the development of my program I came across one drawing glitch that > I was unable to solve. I am using GtkRevealer to show and hide a GtkInfoBar > above another box holding a scrolled window with a GtkTextView (actually > GtkSourceView) a lot like it is in gedit. The whole thing is packed in a > GtkPaned. > > When I hide the infobar through the revealer, a black area in the text view > appears and it disappears when a redrawing of the widget must occur (for > instance when I click on the text view to place the cursor) Additionally, > this glitch does not appear if I enlarge the default resolution of the > window, which for compatibility reasons is 640x480. I understand that this > may be hard to reproduce, but I am unaware who encountered the same > problem. He maybe knows a workaround to this issue. Also any idea is > welcome. I will draw exactly how the glitch looks on gedit (although it > doesn't happen in gedit or it does but I cannot hit the correct > resolution). > > https://i.stack.imgur.com/jHONx.png
I've often seen this bug in Polari, which also uses GtkTextView. Usually it happened while I was resizing the window. Sometimes it would happen when new IRC messages were appearing. I've checked https://gitlab.gnome.org/GNOME/gtk/issues briefly but couldn't find an existing bug, so perhaps nobody has reported it upstream. (I don't have the energy to report it today, especially since I don't have a reliable procedure of reproducing it.) Marius Gedminas -- Lutetium is the heaviest and hardest of the rare earth metals, and is used in the production of umlauts and other fraktur font features. -- Charles Stross
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