func (s *sysData) center() { ret := make(chan struct{}) defer close(ret) uitask <- func() { if C.gtk_widget_get_visible(s.widget) == C.FALSE { // hint to the WM to make it centered when it is shown again // thanks to Jasper in irc.gimp.net/#gtk+ C.gtk_window_set_position(togtkwindow(s.widget), C.GTK_WIN_POS_CENTER) } else { var width, height C.gint s.resetposition() //we should be able to use gravity to simplify this, but it doesn't take effect immediately, and adding show calls does nothing (thanks Jasper in irc.gimp.net/#gtk+) C.gtk_window_get_size(togtkwindow(s.widget), &width, &height) C.gtk_window_move(togtkwindow(s.widget), (C.gdk_screen_width()/2)-(width/2), (C.gdk_screen_height()/2)-(width/2)) } ret <- struct{}{} } <-ret }
func (w *Window) SetPosition(x, y int) { C.gtk_window_move((*C.GtkWindow)(unsafe.Pointer(w.gtkWin)), C.gint(x), C.gint(y)) }
// Move is a wrapper around gtk_window_move(). func (v *Window) Move(x, y int) { C.gtk_window_move(v.native(), C.gint(x), C.gint(y)) }