// Sometimes window managers are really slow about
// re-implemented here because under Fluxbox, win.WMMove() results in the window
// growing vertically by the height of the titlebar!
// So we snapshot the size of the window before we move it,
// move it, compare the sizes, then resize it vertically to be in line with our intentions
//
// this is synchronous: it waits for the window to finish moving before it releases control
// because it would be impossible to selectivley poll for just the move.
func Move(win *xwindow.Window, x, y int) error {
// snapshot both sorts of window geometries
decor_geom, geom, err := Geometries(win)
if err != nil {
return err
}
log.Printf("Move: detected geometry to be %v\n", geom)
// move the window, then wait for it to finish moving
err = win.WMMove(x, y)
if err != nil {
return err
}
// this waits 30MS under non-Fluxbox window manager
// WHAT DO
err = PollFor(win, GeometryDiffers(geom))
if err != nil {
// if we had a timeout, that means that the geometry didn't derp during
// moving, and everything is A-OK!
// skip the rest of the function
if _, wasTimeout := err.(*TimeoutError); wasTimeout {
return nil
}
return err
}
// compare window widths before/after move
_, post_move_base, err := Geometries(win)
if err != nil {
return err
}
delta_w := post_move_base.Width() - geom.Width()
delta_h := post_move_base.Height() - geom.Height()
if delta_h != 0 || delta_w != 0 {
// fluxbox has done it again. We issued a move, and we got a taller window, too!
log.Printf("Move: resetting dimensions to %v due to w/h delta: %v/%v\n", geom, delta_w, delta_h)
err = win.WMResize(geom.Width(), geom.Height())
if err != nil {
return err
}
// wait for that to succeed
err = PollFor(win, GeometryDiffers(post_move_base))
if err != nil {
return err
}
}
// make sure window did actually move
err = PollFor(win, DecorDiffers(decor_geom))
if err != nil {
// if we had a timeout, that means that the window didn't move
// we want to send an error mentioning that fact specifically
// instead of a generic "lol timeout happan in polling :DDD"
if te, wasTimeout := err.(*TimeoutError); wasTimeout {
return &TimeoutError{"Move: window didn't move", te.Timeout}
}
// return whatever other error stymied the polling
return err
}
return nil
}
