[37] | 1 | # tearoff.tcl -- |
---|
| 2 | # |
---|
| 3 | # This file contains procedures that implement tear-off menus. |
---|
| 4 | # |
---|
| 5 | # RCS: @(#) $Id: tearoff.tcl,v 1.7 2001/08/01 16:21:11 dgp Exp $ |
---|
| 6 | # |
---|
| 7 | # Copyright (c) 1994 The Regents of the University of California. |
---|
| 8 | # Copyright (c) 1994-1997 Sun Microsystems, Inc. |
---|
| 9 | # |
---|
| 10 | # See the file "license.terms" for information on usage and redistribution |
---|
| 11 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
---|
| 12 | # |
---|
| 13 | |
---|
| 14 | # ::tk::TearoffMenu -- |
---|
| 15 | # Given the name of a menu, this procedure creates a torn-off menu |
---|
| 16 | # that is identical to the given menu (including nested submenus). |
---|
| 17 | # The new torn-off menu exists as a toplevel window managed by the |
---|
| 18 | # window manager. The return value is the name of the new menu. |
---|
| 19 | # The window is created at the point specified by x and y |
---|
| 20 | # |
---|
| 21 | # Arguments: |
---|
| 22 | # w - The menu to be torn-off (duplicated). |
---|
| 23 | # x - x coordinate where window is created |
---|
| 24 | # y - y coordinate where window is created |
---|
| 25 | |
---|
| 26 | proc ::tk::TearOffMenu {w {x 0} {y 0}} { |
---|
| 27 | # Find a unique name to use for the torn-off menu. Find the first |
---|
| 28 | # ancestor of w that is a toplevel but not a menu, and use this as |
---|
| 29 | # the parent of the new menu. This guarantees that the torn off |
---|
| 30 | # menu will be on the same screen as the original menu. By making |
---|
| 31 | # it a child of the ancestor, rather than a child of the menu, it |
---|
| 32 | # can continue to live even if the menu is deleted; it will go |
---|
| 33 | # away when the toplevel goes away. |
---|
| 34 | |
---|
| 35 | if {$x == 0} { |
---|
| 36 | set x [winfo rootx $w] |
---|
| 37 | } |
---|
| 38 | if {$y == 0} { |
---|
| 39 | set y [winfo rooty $w] |
---|
| 40 | } |
---|
| 41 | |
---|
| 42 | set parent [winfo parent $w] |
---|
| 43 | while {[string compare [winfo toplevel $parent] $parent] \ |
---|
| 44 | || [string equal [winfo class $parent] "Menu"]} { |
---|
| 45 | set parent [winfo parent $parent] |
---|
| 46 | } |
---|
| 47 | if {[string equal $parent "."]} { |
---|
| 48 | set parent "" |
---|
| 49 | } |
---|
| 50 | for {set i 1} 1 {incr i} { |
---|
| 51 | set menu $parent.tearoff$i |
---|
| 52 | if {![winfo exists $menu]} { |
---|
| 53 | break |
---|
| 54 | } |
---|
| 55 | } |
---|
| 56 | |
---|
| 57 | $w clone $menu tearoff |
---|
| 58 | |
---|
| 59 | # Pick a title for the new menu by looking at the parent of the |
---|
| 60 | # original: if the parent is a menu, then use the text of the active |
---|
| 61 | # entry. If it's a menubutton then use its text. |
---|
| 62 | |
---|
| 63 | set parent [winfo parent $w] |
---|
| 64 | if {[string compare [$menu cget -title] ""]} { |
---|
| 65 | wm title $menu [$menu cget -title] |
---|
| 66 | } else { |
---|
| 67 | switch [winfo class $parent] { |
---|
| 68 | Menubutton { |
---|
| 69 | wm title $menu [$parent cget -text] |
---|
| 70 | } |
---|
| 71 | Menu { |
---|
| 72 | wm title $menu [$parent entrycget active -label] |
---|
| 73 | } |
---|
| 74 | } |
---|
| 75 | } |
---|
| 76 | |
---|
| 77 | $menu post $x $y |
---|
| 78 | |
---|
| 79 | if {[winfo exists $menu] == 0} { |
---|
| 80 | return "" |
---|
| 81 | } |
---|
| 82 | |
---|
| 83 | # Set tk::Priv(focus) on entry: otherwise the focus will get lost |
---|
| 84 | # after keyboard invocation of a sub-menu (it will stay on the |
---|
| 85 | # submenu). |
---|
| 86 | |
---|
| 87 | bind $menu <Enter> { |
---|
| 88 | set tk::Priv(focus) %W |
---|
| 89 | } |
---|
| 90 | |
---|
| 91 | # If there is a -tearoffcommand option for the menu, invoke it |
---|
| 92 | # now. |
---|
| 93 | |
---|
| 94 | set cmd [$w cget -tearoffcommand] |
---|
| 95 | if {[string compare $cmd ""]} { |
---|
| 96 | uplevel #0 $cmd [list $w $menu] |
---|
| 97 | } |
---|
| 98 | return $menu |
---|
| 99 | } |
---|
| 100 | |
---|
| 101 | # ::tk::MenuDup -- |
---|
| 102 | # Given a menu (hierarchy), create a duplicate menu (hierarchy) |
---|
| 103 | # in a given window. |
---|
| 104 | # |
---|
| 105 | # Arguments: |
---|
| 106 | # src - Source window. Must be a menu. It and its |
---|
| 107 | # menu descendants will be duplicated at dst. |
---|
| 108 | # dst - Name to use for topmost menu in duplicate |
---|
| 109 | # hierarchy. |
---|
| 110 | |
---|
| 111 | proc ::tk::MenuDup {src dst type} { |
---|
| 112 | set cmd [list menu $dst -type $type] |
---|
| 113 | foreach option [$src configure] { |
---|
| 114 | if {[llength $option] == 2} { |
---|
| 115 | continue |
---|
| 116 | } |
---|
| 117 | if {[string equal [lindex $option 0] "-type"]} { |
---|
| 118 | continue |
---|
| 119 | } |
---|
| 120 | lappend cmd [lindex $option 0] [lindex $option 4] |
---|
| 121 | } |
---|
| 122 | eval $cmd |
---|
| 123 | set last [$src index last] |
---|
| 124 | if {[string equal $last "none"]} { |
---|
| 125 | return |
---|
| 126 | } |
---|
| 127 | for {set i [$src cget -tearoff]} {$i <= $last} {incr i} { |
---|
| 128 | set cmd [list $dst add [$src type $i]] |
---|
| 129 | foreach option [$src entryconfigure $i] { |
---|
| 130 | lappend cmd [lindex $option 0] [lindex $option 4] |
---|
| 131 | } |
---|
| 132 | eval $cmd |
---|
| 133 | } |
---|
| 134 | |
---|
| 135 | # Duplicate the binding tags and bindings from the source menu. |
---|
| 136 | |
---|
| 137 | set tags [bindtags $src] |
---|
| 138 | set srcLen [string length $src] |
---|
| 139 | |
---|
| 140 | # Copy tags to x, replacing each substring of src with dst. |
---|
| 141 | |
---|
| 142 | while {[set index [string first $src $tags]] != -1} { |
---|
| 143 | append x [string range $tags 0 [expr {$index - 1}]]$dst |
---|
| 144 | set tags [string range $tags [expr {$index + $srcLen}] end] |
---|
| 145 | } |
---|
| 146 | append x $tags |
---|
| 147 | |
---|
| 148 | bindtags $dst $x |
---|
| 149 | |
---|
| 150 | foreach event [bind $src] { |
---|
| 151 | unset x |
---|
| 152 | set script [bind $src $event] |
---|
| 153 | set eventLen [string length $event] |
---|
| 154 | |
---|
| 155 | # Copy script to x, replacing each substring of event with dst. |
---|
| 156 | |
---|
| 157 | while {[set index [string first $event $script]] != -1} { |
---|
| 158 | append x [string range $script 0 [expr {$index - 1}]] |
---|
| 159 | append x $dst |
---|
| 160 | set script [string range $script [expr {$index + $eventLen}] end] |
---|
| 161 | } |
---|
| 162 | append x $script |
---|
| 163 | |
---|
| 164 | bind $dst $event $x |
---|
| 165 | } |
---|
| 166 | } |
---|