static gboolean do_scroll_event(GtkTreeView *tv, GdkEventScroll *e)
{
gint x, y, cx;
GtkTreeViewColumn *col;
gtk_tree_view_widget_to_tree_coords(tv, e->x, e->y, &x, &y);
if (!gtk_tree_view_get_path_at_pos(tv, x, y, NULL, &col, &cx, NULL))
return FALSE;
if (col != g_object_get_data(G_OBJECT(tv), "signalcol"))
return FALSE;
switch (e->direction) {
case GDK_SCROLL_UP:
sigview_zoom(GTK_WIDGET(tv), 1.2, cx);
break;
case GDK_SCROLL_DOWN:
sigview_zoom(GTK_WIDGET(tv), 1/1.2, cx);
break;
default:
/* Surpress warning about unswitch enum values */
break;
}
return TRUE;
}
void zoom_fit(GtkAction *action, GObject *parent)
{
(void)action;
GtkWidget *sigview = g_object_get_data(parent, "sigview");
sigview_zoom(sigview, 0, 0);
}
static void col_resized(GtkWidget *col)
{
sigview_zoom(col, 1, 0);
}