/* on_value_changed */
void on_value_changed(GtkWidget * widget, gpointer data)
{
Mixer * mixer = data;
gdouble value;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(%p, %lf, %p)\n", __func__, (void*)widget,
value, (void*)data);
#endif
value = gtk_range_get_value(GTK_RANGE(widget));
mixer_set_value(mixer, widget, value);
}
static void set_volume_slider(struct button *b,struct event *ev)
{
struct mixer_control *c = (struct mixer_control *)b->user_data;
long off=ev->y-b->y;
long range=c->max-c->min;
long oldvol=mixer_get_value(c);
long newvol=range- range*off/b->h;
long set;
printf("oldvol %d, newvol %d\n",oldvol,newvol);
/* don't allow a misplaced key to send the volume to max
* in one step */
if(newvol>oldvol) {
set=oldvol+range/10;
if(set==oldvol) set++;
if(set>newvol) set=newvol;
} else set = (newvol<0) ? 0 : newvol;
mixer_set_value(c,set);
render_volume_slider(b);
return 0;
}
