// PropValAtom transforms a GetPropertyReply struct into an ATOM name.
// The property reply must be in 32 bit format.
func PropValAtom(xu *xgbutil.XUtil, reply *xproto.GetPropertyReply,
err error) (string, error) {
if err != nil {
return "", err
}
if reply.Format != 32 {
return "", fmt.Errorf("PropValAtom: Expected format 32 but got %d",
reply.Format)
}
return AtomName(xu, xproto.Atom(xgb.Get32(reply.Value)))
}
// IsFocusProtocol checks whether a ClientMessage event satisfies the
// WM_TAKE_FOCUS protocol.
func IsFocusProtocol(X *xgbutil.XUtil, ev xevent.ClientMessageEvent) bool {
// Make sure the Format is 32. (Meaning that each data item is
// 32 bits.)
if ev.Format != 32 {
return false
}
// Check to make sure the Type atom is WM_PROTOCOLS.
typeName, err := xprop.AtomName(X, ev.Type)
if err != nil || typeName != "WM_PROTOCOLS" { // not what we want
return false
}
// Check to make sure the first data item is WM_TAKE_FOCUS.
protocolType, err := xprop.AtomName(X,
xproto.Atom(ev.Data.Data32[0]))
if err != nil || protocolType != "WM_TAKE_FOCUS" {
return false
}
return true
}
// PropValAtoms is the same as PropValAtom, except that it returns a slice
// of atom names. Also must be 32 bit format.
// This is a method of an XUtil struct, unlike the other 'PropVal...' functions.
func PropValAtoms(xu *xgbutil.XUtil, reply *xproto.GetPropertyReply,
err error) ([]string, error) {
if err != nil {
return nil, err
}
if reply.Format != 32 {
return nil, fmt.Errorf("PropValAtoms: Expected format 32 but got %d",
reply.Format)
}
ids := make([]string, reply.ValueLen)
vals := reply.Value
for i := 0; len(vals) >= 4; i++ {
ids[i], err = AtomName(xu, xproto.Atom(xgb.Get32(vals)))
if err != nil {
return nil, err
}
vals = vals[4:]
}
return ids, nil
}