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# tearoff.tcl -- # # This file contains procedures that implement tear-off menus. # # RCS: @(#) $Id: tearoff.tcl,v 1.7.4.1 2006/01/25 18:21:41 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. #
# ::tk::TearoffMenu -- # 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 # # Arguments: # 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.
if {$x == 0} { set x [winfo rootx $w] } if {$y == 0} { set y [winfo rooty $w] }
set parent [winfo parent $w] while {[winfo toplevel $parent] ne $parent || [winfo class $parent] eq "Menu"} { set parent [winfo parent $parent] } if {$parent eq "."} { set parent "" } for {set i 1} 1 {incr i} { set menu $parent.tearoff$i if {![winfo exists $menu]} { break } }
$w clone $menu tearoff
# 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 $w] if {[$menu cget -title] ne ""} { wm title $menu [$menu cget -title] } else { switch [winfo class $parent] { Menubutton { wm title $menu [$parent cget -text] } Menu { wm title $menu [$parent entrycget active -label] } } }
$menu post $x $y
if {[winfo exists $menu] == 0} { return "" }
# Set tk::Priv(focus) on entry: otherwise the focus will get lost # after keyboard invocation of a sub-menu (it will stay on the # submenu).
bind $menu <Enter> { set tk::Priv(focus) %W }
# If there is a -tearoffcommand option for the menu, invoke it # now.
set cmd [$w cget -tearoffcommand] if {$cmd ne ""} { uplevel #0 $cmd [list $w $menu] } return $menu }
# ::tk::MenuDup -- # Given a menu (hierarchy), create a duplicate menu (hierarchy) # in a given window. # # Arguments: # 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 # hierarchy.
proc ::tk::MenuDup {src dst type} { set cmd [list menu $dst -type $type] foreach option [$src configure] { if {[llength $option] == 2} { continue } if {[lindex $option 0] eq "-type"} { continue } lappend cmd [lindex $option 0] [lindex $option 4] } eval $cmd set last [$src index last] if {$last eq "none"} { return } for {set i [$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] } eval $cmd }
# Duplicate the binding tags and bindings from the source menu.
set tags [bindtags $src] 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] } append x $tags
bindtags $dst $x
foreach event [bind $src] { unset x 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}]] append x $dst set script [string range $script [expr {$index + $eventLen}] end] } append x $script
bind $dst $event $x } }
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