GtkRevealer glitches the text view drawing

[pspgen mail bg]

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 tried to force a redrawing with gtk_widget_queue_draw() but nothing
happens and it won't, because it has nothing to redraw. I will try now to
place the cursor automatically. It may work, but it is not functionally
adequate. EDIT: Surprisingly it did not work. Grabbing the focus and
placing the cursor had no effect on the glitched visual behavior. I had to
even make a new line to fix it this time. The fact that I have to resize
the window with a value more than a specific point, may mean that the
glitch may be due to alignment miscaulculations, but this doesn't explain
why adding new line or a text mark in the gutter that colorizes the entire
line also removes the black field.


#C #Windows #Windows-7 #gtk #visual-glitch

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