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bug#1036: [PATCH] * xterm.c (gtk-scroll-bar-adjust-thumb-portion): New v


From: Jan Djärv
Subject: bug#1036: [PATCH] * xterm.c (gtk-scroll-bar-adjust-thumb-portion): New variable to determine whether gtk scroll bar thumb size should be adjusted or not. * gtkutil.c (gtk-scroll-bar-adjust-thumb-portion): Use variable.
Date: Sun, 2 Dec 2012 21:51:35 +0100

Hello.

If we are to provide a user option for this, we should do it for all toolkits.
Anyway, the code to do this has always been trivial, its more a policy thing.

        Jan D.
 
2 dec 2012 kl. 14:07 skrev asjo@koldfront.dk (Adam Sjøgren):

> Seeing that there is no correct solution in sight, maybe it would be
> possible to solve the problem like this.
> 
> Summary of problem and links to discussions in the previous decade, see
> here: http://koldfront.dk/archive/2012/05/27-181826.html
> 
> ---
> src/ChangeLog |    7 +++++++
> src/gtkutil.c |   18 +++++++++++-------
> src/xterm.c   |   10 ++++++++++
> 3 files changed, 28 insertions(+), 7 deletions(-)
> 
> diff --git a/src/ChangeLog b/src/ChangeLog
> index 80b9b1e..b95cf17 100644
> --- a/src/ChangeLog
> +++ b/src/ChangeLog
> @@ -1,3 +1,10 @@
> +2012-12-02  Adam Sjøgren  <asjo@koldfront.dk>
> +
> +     * xterm.c (gtk-scroll-bar-adjust-thumb-portion): New variable to
> +     determine whether gtk scroll bar thumb size should be adjusted or
> +     not (Bug#1036).
> +     * gtkutil.c (gtk-scroll-bar-adjust-thumb-portion): Use variable.
> +
> 2012-12-01  Paul Eggert  <eggert@cs.ucla.edu>
> 
>       * xterm.c (x_draw_image_relief): Remove unused locals (Bug#10500).
> diff --git a/src/gtkutil.c b/src/gtkutil.c
> index 4367b53..5259fe7 100644
> --- a/src/gtkutil.c
> +++ b/src/gtkutil.c
> @@ -3765,13 +3765,17 @@ xg_set_toolkit_scroll_bar_thumb (struct scroll_bar 
> *bar,
> 
>       adj = gtk_range_get_adjustment (GTK_RANGE (wscroll));
> 
> -      /* We do the same as for MOTIF in xterm.c, assume 30 chars per line
> -         rather than the real portion value.  This makes the thumb less 
> likely
> -         to resize and that looks better.  */
> -      portion = WINDOW_TOTAL_LINES (XWINDOW (bar->window)) * 30;
> -      /* When the thumb is at the bottom, position == whole.
> -         So we need to increase `whole' to make space for the thumb.  */
> -      whole += portion;
> +      if (gtk_scroll_bar_adjust_thumb_portion_p)
> +        {
> +          /* We do the same as for MOTIF in xterm.c, use 30 chars per
> +             line rather than the real portion value.  This makes the
> +             thumb less likely to resize and that looks better.  */
> +          portion = WINDOW_TOTAL_LINES (XWINDOW (bar->window)) * 30;
> +
> +          /* When the thumb is at the bottom, position == whole.
> +             So we need to increase `whole' to make space for the thumb.  */
> +          whole += portion;
> +        }
> 
>       if (whole <= 0)
>         top = 0, shown = 1;
> diff --git a/src/xterm.c b/src/xterm.c
> index bbcff8c..64f069d 100644
> --- a/src/xterm.c
> +++ b/src/xterm.c
> @@ -10791,6 +10791,16 @@ With MS Windows or Nextstep, the value is t.  */);
>   Vx_toolkit_scroll_bars = Qnil;
> #endif
> 
> +#ifdef USE_GTK
> +  DEFVAR_BOOL ("gtk-scroll-bar-adjust-thumb-portion",
> +              gtk_scroll_bar_adjust_thumb_portion_p,
> +              doc: /* Non-nil means adjust the thumb in the
> +gtk scroll bar to be less likely to resize which looks better.
> +Set to nil if you want the thumb to fill the whole scroll bar
> +when the entire buffer is visible.  */);
> +  gtk_scroll_bar_adjust_thumb_portion_p = 1;
> +#endif
> +
>   staticpro (&last_mouse_motion_frame);
>   last_mouse_motion_frame = Qnil;
> 
> -- 
> 1.7.10.4
> 
> -- 
> "It's beautiful! And I certainly hope                        Adam Sjøgren
>  my parents hate this album!"                           asjo@koldfront.dk
> 
> 






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