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 gtk_window_get_size(window *C.GtkWidget) (int, int) {
var width, height C.gint
C.gtk_window_get_size(togtkwindow(window), &width, &height)
return int(width), int(height)
}
// GetSize is a wrapper around gtk_window_get_size().
func (v *Window) GetSize() (width, height int) {
var w, h C.gint
C.gtk_window_get_size(v.native(), &w, &h)
return int(w), int(h)
}