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Diffstat (limited to 'library/tearoff.tcl')
| -rw-r--r-- | library/tearoff.tcl | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/library/tearoff.tcl b/library/tearoff.tcl new file mode 100644 index 0000000..7cbe8e7 --- /dev/null +++ b/library/tearoff.tcl @@ -0,0 +1,145 @@ +# 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 + } +} |