Re: [dev] [surf]keybind to scroll left/right

From: <stanio_AT_cs.tu-berlin.de>
Date: Thu, 24 May 2012 08:38:15 +0200

* Thuban <thuban_AT_singularity.fr> [2012-05-24 07:53]:
> I was wondering if there is any way to have a keybind to scroll left or
> right, just like you can scroll up and down with C-k and C-j?

sure. Here an example:
----- config.h -----
    { MODKEY, GDK_j, scroll_v, { .i = +1 } },
    { MODKEY, GDK_k, scroll_v, { .i = -1 } },
    { MODKEY, GDK_g, scroll_v, { .i = -20000 } },
    { MODKEY|GDK_SHIFT_MASK,GDK_g, scroll_v, { .i = +20000 } },
    { MODKEY, GDK_b, scroll_v, { .i = -10000 } },
    { MODKEY, GDK_space, scroll_v, { .i = +10000 } },
    { MODKEY, GDK_l, scroll_h, { .i = +1 } },
    { MODKEY, GDK_h, scroll_h, { .i = -1 } },
----- -------- -----


------ surf.c ------
void
scroll_h(Client *c, const Arg *arg) {
 scroll(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(c->scroll)), arg);
}

void
scroll_v(Client *c, const Arg *arg) {
 scroll(gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(c->scroll)), arg);
}

void
scroll(GtkAdjustment *a, const Arg *arg) {
 gdouble v;

 v = gtk_adjustment_get_value(a);
 switch (arg->i){
 case +10000:
 case -10000:
 v += gtk_adjustment_get_page_increment(a) * (arg->i / 10000); break;
 case +20000:
 case -20000:
 default:
 v += gtk_adjustment_get_step_increment(a) * arg->i;
 }
 v = MAX(v, 0.0);
 v = MIN(v, gtk_adjustment_get_upper(a) - gtk_adjustment_get_page_size(a));
 gtk_adjustment_set_value(a, v);
}
----- -------- -----

--s_
Received on Thu May 24 2012 - 08:38:15 CEST