Re: difficulty adjusting vertical and horizontal panel sizes in gtk3 programs

[PHO <pho%cielonegro.org@localhost>]

On 3/26/25 18:54, Ramiro Aceves wrote:

> But those borders are not my problem. My problem are the borders that 
> are inside the GTK programs like tunderbird, that divide the program in 
> for example 3 panels. There are very thin lines. In a good working 
> Thunderbird, when you place the mouse pointer close to the line, arrows 
> appear to help placing the mouse over the separation line. Once you have 
> placed precisely the mouse you can adjust line position and resize 
> panels inside the program. Without the helping arrows is very tricky to 
> place the mouse accurately over the line.
Try creating a file ~/.config/gtk-3.0/gtk.css with:

  separator {
      min-width: 6px;
      min-height: 6px;
  }

But some applications seem to use custom widgets and ignore this. For 
Thunderbird you need to create a file 
~/.thunderbird/{your-profile}/chrome/userChrome.css with:

  hr[is="pane-splitter"][resize-direction="horizontal"] {
      width: 6px !important;
      cursor: crosshair !important;
  }
  hr[is="pane-splitter"][resize-direction="vertical"] {
      height: 6px !important;
      cursor: crosshair !important;
  }