func set_relative_indicators(bufp unsafe.Pointer, viewp unsafe.Pointer, offsets []int, indicators []unsafe.Pointer) {
buf := (*C.GtkTextBuffer)(bufp)
view := (*C.GtkTextView)(viewp)
var it C.GtkTextIter
C.gtk_text_buffer_get_start_iter(buf, &it)
var location C.GdkRectangle
var left, top C.gint
var indicator *C.GtkWidget
for i, offset := range offsets {
C.gtk_text_iter_set_offset(&it, C.gint(offset))
C.gtk_text_view_get_iter_location(view, &it, &location)
C.gtk_text_view_buffer_to_window_coords(view, C.GTK_TEXT_WINDOW_WIDGET, C.gint(location.x), C.gint(location.y), &left, &top)
indicator = (*C.GtkWidget)(indicators[i])
top += 8
if left >= C.gint(0) && top >= C.gint(0) {
C.gtk_widget_set_margin_start(indicator, left)
C.gtk_widget_set_margin_top(indicator, top)
C.gtk_widget_show(indicator)
}
}
}
// SetOffset is a wrapper around gtk_text_iter_set_offset().
func (v *TextIter) SetOffset(v1 int) {
C.gtk_text_iter_set_offset(v.native(), C.gint(v1))
}