# This file contains procedures that implement tear-off menus.
# RCS: @(#) $Id: tearoff.tcl,v 1.7 2001/08/01 16:21:11 dgp Exp $
# Copyright (c) 1994 The Regents of the University of California.
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
# Given the name of a menu, this procedure creates a torn-off menu
# that is identical to the given menu (including nested submenus).
# The new torn-off menu exists as a toplevel window managed by the
# window manager. The return value is the name of the new menu.
# The window is created at the point specified by x and y
# w - The menu to be torn-off (duplicated).
# x - x coordinate where window is created
# y - y coordinate where window is created
proc ::tk::TearOffMenu {w
{x
0} {y
0}} {
# Find a unique name to use for the torn-off menu. Find the first
# ancestor of w that is a toplevel but not a menu, and use this as
# the parent of the new menu. This guarantees that the torn off
# menu will be on the same screen as the original menu. By making
# it a child of the ancestor, rather than a child of the menu, it
# can continue to live even if the menu is deleted; it will go
# away when the toplevel goes away.
set parent
[winfo parent
$w]
while {[string compare
[winfo toplevel $parent] $parent] \
||
[string equal
[winfo class
$parent] "Menu"]} {
set parent
[winfo parent
$parent]
if {[string equal
$parent "."]} {
for {set i
1} 1 {incr i
} {
set menu $parent.tearoff
$i
if {![winfo exists
$menu]} {
# Pick a title for the new menu by looking at the parent of the
# original: if the parent is a menu, then use the text of the active
# entry. If it's a menubutton then use its text.
set parent
[winfo parent
$w]
if {[string compare
[$menu cget
-title] ""]} {
wm title
$menu [$menu cget
-title]
switch [winfo class
$parent] {
wm title
$menu [$parent cget
-text]
wm title
$menu [$parent entrycget active
-label]
if {[winfo exists
$menu] == 0} {
# Set tk::Priv(focus) on entry: otherwise the focus will get lost
# after keyboard invocation of a sub-menu (it will stay on the
# If there is a -tearoffcommand option for the menu, invoke it
set cmd
[$w cget
-tearoffcommand]
if {[string compare
$cmd ""]} {
uplevel #0 $cmd [list $w $menu]
# Given a menu (hierarchy), create a duplicate menu (hierarchy)
# src - Source window. Must be a menu. It and its
# menu descendants will be duplicated at dst.
# dst - Name to use for topmost menu in duplicate
proc ::tk::MenuDup {src dst type
} {
set cmd
[list menu $dst -type $type]
foreach option [$src configure
] {
if {[llength $option] == 2} {
if {[string equal
[lindex $option 0] "-type"]} {
lappend cmd
[lindex $option 0] [lindex $option 4]
set last
[$src index last
]
if {[string equal
$last "none"]} {
for {set i
[$src cget
-tearoff]} {$i <= $last} {incr i
} {
set cmd
[list $dst add
[$src type
$i]]
foreach option [$src entryconfigure
$i] {
lappend cmd
[lindex $option 0] [lindex $option 4]
# Duplicate the binding tags and bindings from the source menu.
set srcLen
[string length
$src]
# Copy tags to x, replacing each substring of src with dst.
while {[set index
[string first
$src $tags]] != -1} {
append x
[string range
$tags 0 [expr {$index - 1}]]$dst
set tags
[string range
$tags [expr {$index + $srcLen}] end
]
foreach event [bind $src] {
set script
[bind $src $event]
set eventLen
[string length
$event]
# Copy script to x, replacing each substring of event with dst.
while {[set index
[string first
$event $script]] != -1} {
append x
[string range
$script 0 [expr {$index - 1}]]
set script
[string range
$script [expr {$index + $eventLen}] end
]