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- # tearoff.tcl --
- #
- # This file contains procedures that implement tear-off menus.
- #
- # SCCS: @(#) tearoff.tcl 1.20 97/08/21 14:49:27
- #
- # 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.
- #
-
- # tkTearoffMenu --
- # 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 tkTearOffMenu {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] != $parent)
- || ([winfo class $parent] == "Menu")} {
- set parent [winfo parent $parent]
- }
- if {$parent == "."} {
- 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] != ""} {
- 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 tkPriv(focus) on entry: otherwise the focus will get lost
- # after keyboard invocation of a sub-menu (it will stay on the
- # submenu).
-
- bind $menu <Enter> {
- set tkPriv(focus) %W
- }
-
- # If there is a -tearoffcommand option for the menu, invoke it
- # now.
-
- set cmd [$w cget -tearoffcommand]
- if {$cmd != ""} {
- uplevel #0 $cmd $w $menu
- }
- return $menu
- }
-
- # tkMenuDup --
- # 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 tkMenuDup {src dst type} {
- set cmd [list menu $dst -type $type]
- foreach option [$src configure] {
- if {[llength $option] == 2} {
- continue
- }
- if {[string compare [lindex $option 0] "-type"] == 0} {
- continue
- }
- lappend cmd [lindex $option 0] [lindex $option 4]
- }
- eval $cmd
- set last [$src index last]
- if {$last == "none"} {
- return
- }
- for {set i [$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.
-
- regsub -all . $src {\\&} quotedSrc
- regsub -all . $dst {\\&} quotedDst
- regsub -all $quotedSrc [bindtags $src] $dst x
- bindtags $dst $x
- foreach event [bind $src] {
- regsub -all $quotedSrc [bind $src $event] $dst x
- bind $dst $event $x
- }
- }
-