[37] | 1 | # menu.tcl -- |
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| 2 | # |
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| 3 | # This file defines the default bindings for Tk menus and menubuttons. |
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| 4 | # It also implements keyboard traversal of menus and implements a few |
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| 5 | # other utility procedures related to menus. |
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| 6 | # |
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| 7 | # RCS: @(#) $Id: menu.tcl,v 1.18.2.1 2004/02/04 00:23:04 hobbs Exp $ |
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| 8 | # |
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| 9 | # Copyright (c) 1992-1994 The Regents of the University of California. |
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| 10 | # Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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| 11 | # Copyright (c) 1998-1999 by Scriptics Corporation. |
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| 12 | # |
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| 13 | # See the file "license.terms" for information on usage and redistribution |
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| 14 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 15 | # |
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| 16 | |
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| 17 | #------------------------------------------------------------------------- |
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| 18 | # Elements of tk::Priv that are used in this file: |
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| 19 | # |
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| 20 | # cursor - Saves the -cursor option for the posted menubutton. |
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| 21 | # focus - Saves the focus during a menu selection operation. |
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| 22 | # Focus gets restored here when the menu is unposted. |
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| 23 | # grabGlobal - Used in conjunction with tk::Priv(oldGrab): if |
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| 24 | # tk::Priv(oldGrab) is non-empty, then tk::Priv(grabGlobal) |
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| 25 | # contains either an empty string or "-global" to |
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| 26 | # indicate whether the old grab was a local one or |
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| 27 | # a global one. |
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| 28 | # inMenubutton - The name of the menubutton widget containing |
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| 29 | # the mouse, or an empty string if the mouse is |
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| 30 | # not over any menubutton. |
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| 31 | # menuBar - The name of the menubar that is the root |
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| 32 | # of the cascade hierarchy which is currently |
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| 33 | # posted. This is null when there is no menu currently |
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| 34 | # being pulled down from a menu bar. |
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| 35 | # oldGrab - Window that had the grab before a menu was posted. |
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| 36 | # Used to restore the grab state after the menu |
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| 37 | # is unposted. Empty string means there was no |
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| 38 | # grab previously set. |
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| 39 | # popup - If a menu has been popped up via tk_popup, this |
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| 40 | # gives the name of the menu. Otherwise this |
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| 41 | # value is empty. |
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| 42 | # postedMb - Name of the menubutton whose menu is currently |
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| 43 | # posted, or an empty string if nothing is posted |
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| 44 | # A grab is set on this widget. |
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| 45 | # relief - Used to save the original relief of the current |
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| 46 | # menubutton. |
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| 47 | # window - When the mouse is over a menu, this holds the |
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| 48 | # name of the menu; it's cleared when the mouse |
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| 49 | # leaves the menu. |
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| 50 | # tearoff - Whether the last menu posted was a tearoff or not. |
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| 51 | # This is true always for unix, for tearoffs for Mac |
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| 52 | # and Windows. |
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| 53 | # activeMenu - This is the last active menu for use |
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| 54 | # with the <<MenuSelect>> virtual event. |
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| 55 | # activeItem - This is the last active menu item for |
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| 56 | # use with the <<MenuSelect>> virtual event. |
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| 57 | #------------------------------------------------------------------------- |
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| 58 | |
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| 59 | #------------------------------------------------------------------------- |
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| 60 | # Overall note: |
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| 61 | # This file is tricky because there are five different ways that menus |
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| 62 | # can be used: |
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| 63 | # |
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| 64 | # 1. As a pulldown from a menubutton. In this style, the variable |
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| 65 | # tk::Priv(postedMb) identifies the posted menubutton. |
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| 66 | # 2. As a torn-off menu copied from some other menu. In this style |
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| 67 | # tk::Priv(postedMb) is empty, and menu's type is "tearoff". |
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| 68 | # 3. As an option menu, triggered from an option menubutton. In this |
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| 69 | # style tk::Priv(postedMb) identifies the posted menubutton. |
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| 70 | # 4. As a popup menu. In this style tk::Priv(postedMb) is empty and |
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| 71 | # the top-level menu's type is "normal". |
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| 72 | # 5. As a pulldown from a menubar. The variable tk::Priv(menubar) has |
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| 73 | # the owning menubar, and the menu itself is of type "normal". |
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| 74 | # |
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| 75 | # The various binding procedures use the state described above to |
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| 76 | # distinguish the various cases and take different actions in each |
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| 77 | # case. |
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| 78 | #------------------------------------------------------------------------- |
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| 79 | |
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| 80 | #------------------------------------------------------------------------- |
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| 81 | # The code below creates the default class bindings for menus |
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| 82 | # and menubuttons. |
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| 83 | #------------------------------------------------------------------------- |
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| 84 | |
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| 85 | bind Menubutton <FocusIn> {} |
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| 86 | bind Menubutton <Enter> { |
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| 87 | tk::MbEnter %W |
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| 88 | } |
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| 89 | bind Menubutton <Leave> { |
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| 90 | tk::MbLeave %W |
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| 91 | } |
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| 92 | bind Menubutton <1> { |
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| 93 | if {$tk::Priv(inMenubutton) ne ""} { |
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| 94 | tk::MbPost $tk::Priv(inMenubutton) %X %Y |
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| 95 | } |
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| 96 | } |
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| 97 | bind Menubutton <Motion> { |
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| 98 | tk::MbMotion %W up %X %Y |
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| 99 | } |
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| 100 | bind Menubutton <B1-Motion> { |
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| 101 | tk::MbMotion %W down %X %Y |
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| 102 | } |
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| 103 | bind Menubutton <ButtonRelease-1> { |
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| 104 | tk::MbButtonUp %W |
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| 105 | } |
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| 106 | bind Menubutton <space> { |
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| 107 | tk::MbPost %W |
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| 108 | tk::MenuFirstEntry [%W cget -menu] |
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| 109 | } |
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| 110 | |
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| 111 | # Must set focus when mouse enters a menu, in order to allow |
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| 112 | # mixed-mode processing using both the mouse and the keyboard. |
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| 113 | # Don't set the focus if the event comes from a grab release, |
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| 114 | # though: such an event can happen after as part of unposting |
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| 115 | # a cascaded chain of menus, after the focus has already been |
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| 116 | # restored to wherever it was before menu selection started. |
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| 117 | |
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| 118 | bind Menu <FocusIn> {} |
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| 119 | |
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| 120 | bind Menu <Enter> { |
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| 121 | set tk::Priv(window) %W |
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| 122 | if {[%W cget -type] eq "tearoff"} { |
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| 123 | if {"%m" ne "NotifyUngrab"} { |
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| 124 | if {[tk windowingsystem] eq "x11"} { |
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| 125 | tk_menuSetFocus %W |
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| 126 | } |
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| 127 | } |
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| 128 | } |
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| 129 | tk::MenuMotion %W %x %y %s |
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| 130 | } |
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| 131 | |
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| 132 | bind Menu <Leave> { |
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| 133 | tk::MenuLeave %W %X %Y %s |
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| 134 | } |
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| 135 | bind Menu <Motion> { |
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| 136 | tk::MenuMotion %W %x %y %s |
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| 137 | } |
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| 138 | bind Menu <ButtonPress> { |
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| 139 | tk::MenuButtonDown %W |
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| 140 | } |
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| 141 | bind Menu <ButtonRelease> { |
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| 142 | tk::MenuInvoke %W 1 |
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| 143 | } |
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| 144 | bind Menu <space> { |
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| 145 | tk::MenuInvoke %W 0 |
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| 146 | } |
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| 147 | bind Menu <Return> { |
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| 148 | tk::MenuInvoke %W 0 |
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| 149 | } |
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| 150 | bind Menu <Escape> { |
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| 151 | tk::MenuEscape %W |
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| 152 | } |
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| 153 | bind Menu <Left> { |
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| 154 | tk::MenuLeftArrow %W |
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| 155 | } |
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| 156 | bind Menu <Right> { |
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| 157 | tk::MenuRightArrow %W |
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| 158 | } |
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| 159 | bind Menu <Up> { |
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| 160 | tk::MenuUpArrow %W |
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| 161 | } |
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| 162 | bind Menu <Down> { |
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| 163 | tk::MenuDownArrow %W |
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| 164 | } |
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| 165 | bind Menu <KeyPress> { |
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| 166 | tk::TraverseWithinMenu %W %A |
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| 167 | } |
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| 168 | |
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| 169 | # The following bindings apply to all windows, and are used to |
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| 170 | # implement keyboard menu traversal. |
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| 171 | |
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| 172 | if {[string equal [tk windowingsystem] "x11"]} { |
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| 173 | bind all <Alt-KeyPress> { |
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| 174 | tk::TraverseToMenu %W %A |
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| 175 | } |
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| 176 | |
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| 177 | bind all <F10> { |
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| 178 | tk::FirstMenu %W |
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| 179 | } |
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| 180 | } else { |
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| 181 | bind Menubutton <Alt-KeyPress> { |
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| 182 | tk::TraverseToMenu %W %A |
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| 183 | } |
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| 184 | |
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| 185 | bind Menubutton <F10> { |
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| 186 | tk::FirstMenu %W |
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| 187 | } |
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| 188 | } |
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| 189 | |
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| 190 | # ::tk::MbEnter -- |
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| 191 | # This procedure is invoked when the mouse enters a menubutton |
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| 192 | # widget. It activates the widget unless it is disabled. Note: |
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| 193 | # this procedure is only invoked when mouse button 1 is *not* down. |
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| 194 | # The procedure ::tk::MbB1Enter is invoked if the button is down. |
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| 195 | # |
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| 196 | # Arguments: |
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| 197 | # w - The name of the widget. |
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| 198 | |
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| 199 | proc ::tk::MbEnter w { |
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| 200 | variable ::tk::Priv |
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| 201 | |
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| 202 | if {[string compare $Priv(inMenubutton) ""]} { |
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| 203 | MbLeave $Priv(inMenubutton) |
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| 204 | } |
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| 205 | set Priv(inMenubutton) $w |
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| 206 | if {[string compare [$w cget -state] "disabled"]} { |
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| 207 | $w configure -state active |
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| 208 | } |
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| 209 | } |
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| 210 | |
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| 211 | # ::tk::MbLeave -- |
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| 212 | # This procedure is invoked when the mouse leaves a menubutton widget. |
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| 213 | # It de-activates the widget, if the widget still exists. |
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| 214 | # |
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| 215 | # Arguments: |
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| 216 | # w - The name of the widget. |
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| 217 | |
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| 218 | proc ::tk::MbLeave w { |
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| 219 | variable ::tk::Priv |
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| 220 | |
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| 221 | set Priv(inMenubutton) {} |
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| 222 | if {![winfo exists $w]} { |
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| 223 | return |
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| 224 | } |
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| 225 | if {[string equal [$w cget -state] "active"]} { |
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| 226 | $w configure -state normal |
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| 227 | } |
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| 228 | } |
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| 229 | |
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| 230 | # ::tk::MbPost -- |
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| 231 | # Given a menubutton, this procedure does all the work of posting |
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| 232 | # its associated menu and unposting any other menu that is currently |
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| 233 | # posted. |
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| 234 | # |
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| 235 | # Arguments: |
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| 236 | # w - The name of the menubutton widget whose menu |
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| 237 | # is to be posted. |
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| 238 | # x, y - Root coordinates of cursor, used for positioning |
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| 239 | # option menus. If not specified, then the center |
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| 240 | # of the menubutton is used for an option menu. |
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| 241 | |
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| 242 | proc ::tk::MbPost {w {x {}} {y {}}} { |
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| 243 | global errorInfo |
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| 244 | variable ::tk::Priv |
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| 245 | global tcl_platform |
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| 246 | |
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| 247 | if {[$w cget -state] eq "disabled" || $w eq $Priv(postedMb)} { |
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| 248 | return |
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| 249 | } |
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| 250 | set menu [$w cget -menu] |
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| 251 | if {[string equal $menu ""]} { |
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| 252 | return |
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| 253 | } |
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| 254 | set tearoff [expr {[tk windowingsystem] eq "x11" \ |
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| 255 | || [$menu cget -type] eq "tearoff"}] |
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| 256 | if {[string first $w $menu] != 0} { |
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| 257 | error "can't post $menu: it isn't a descendant of $w (this is a new requirement in Tk versions 3.0 and later)" |
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| 258 | } |
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| 259 | set cur $Priv(postedMb) |
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| 260 | if {[string compare $cur ""]} { |
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| 261 | MenuUnpost {} |
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| 262 | } |
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| 263 | set Priv(cursor) [$w cget -cursor] |
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| 264 | set Priv(relief) [$w cget -relief] |
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| 265 | $w configure -cursor arrow |
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| 266 | $w configure -relief raised |
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| 267 | |
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| 268 | set Priv(postedMb) $w |
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| 269 | set Priv(focus) [focus] |
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| 270 | $menu activate none |
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| 271 | GenerateMenuSelect $menu |
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| 272 | |
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| 273 | # If this looks like an option menubutton then post the menu so |
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| 274 | # that the current entry is on top of the mouse. Otherwise post |
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| 275 | # the menu just below the menubutton, as for a pull-down. |
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| 276 | |
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| 277 | update idletasks |
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| 278 | if {[catch { |
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| 279 | switch [$w cget -direction] { |
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| 280 | above { |
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| 281 | set x [winfo rootx $w] |
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| 282 | set y [expr {[winfo rooty $w] - [winfo reqheight $menu]}] |
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| 283 | # if we go offscreen to the top, show as 'below' |
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| 284 | if {$y < 0} { |
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| 285 | set y [expr {[winfo rooty $w] + [winfo height $w]}] |
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| 286 | } |
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| 287 | PostOverPoint $menu $x $y |
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| 288 | } |
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| 289 | below { |
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| 290 | set x [winfo rootx $w] |
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| 291 | set y [expr {[winfo rooty $w] + [winfo height $w]}] |
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| 292 | # if we go offscreen to the bottom, show as 'above' |
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| 293 | set mh [winfo reqheight $menu] |
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| 294 | if {($y + $mh) > [winfo screenheight $w]} { |
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| 295 | set y [expr {[winfo rooty $w] - $mh}] |
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| 296 | } |
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| 297 | PostOverPoint $menu $x $y |
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| 298 | } |
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| 299 | left { |
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| 300 | set x [expr {[winfo rootx $w] - [winfo reqwidth $menu]}] |
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| 301 | set y [expr {(2 * [winfo rooty $w] + [winfo height $w]) / 2}] |
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| 302 | set entry [MenuFindName $menu [$w cget -text]] |
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| 303 | if {[$w cget -indicatoron]} { |
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| 304 | if {$entry == [$menu index last]} { |
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| 305 | incr y [expr {-([$menu yposition $entry] \ |
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| 306 | + [winfo reqheight $menu])/2}] |
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| 307 | } else { |
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| 308 | incr y [expr {-([$menu yposition $entry] \ |
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| 309 | + [$menu yposition [expr {$entry+1}]])/2}] |
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| 310 | } |
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| 311 | } |
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| 312 | PostOverPoint $menu $x $y |
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| 313 | if {$entry ne "" \ |
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| 314 | && [$menu entrycget $entry -state] ne "disabled"} { |
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| 315 | $menu activate $entry |
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| 316 | GenerateMenuSelect $menu |
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| 317 | } |
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| 318 | } |
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| 319 | right { |
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| 320 | set x [expr {[winfo rootx $w] + [winfo width $w]}] |
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| 321 | set y [expr {(2 * [winfo rooty $w] + [winfo height $w]) / 2}] |
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| 322 | set entry [MenuFindName $menu [$w cget -text]] |
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| 323 | if {[$w cget -indicatoron]} { |
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| 324 | if {$entry == [$menu index last]} { |
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| 325 | incr y [expr {-([$menu yposition $entry] \ |
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| 326 | + [winfo reqheight $menu])/2}] |
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| 327 | } else { |
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| 328 | incr y [expr {-([$menu yposition $entry] \ |
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| 329 | + [$menu yposition [expr {$entry+1}]])/2}] |
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| 330 | } |
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| 331 | } |
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| 332 | PostOverPoint $menu $x $y |
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| 333 | if {$entry ne "" \ |
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| 334 | && [$menu entrycget $entry -state] ne "disabled"} { |
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| 335 | $menu activate $entry |
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| 336 | GenerateMenuSelect $menu |
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| 337 | } |
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| 338 | } |
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| 339 | default { |
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| 340 | if {[$w cget -indicatoron]} { |
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| 341 | if {[string equal $y {}]} { |
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| 342 | set x [expr {[winfo rootx $w] + [winfo width $w]/2}] |
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| 343 | set y [expr {[winfo rooty $w] + [winfo height $w]/2}] |
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| 344 | } |
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| 345 | PostOverPoint $menu $x $y [MenuFindName $menu [$w cget -text]] |
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| 346 | } else { |
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| 347 | PostOverPoint $menu [winfo rootx $w] [expr {[winfo rooty $w]+[winfo height $w]}] |
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| 348 | } |
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| 349 | } |
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| 350 | } |
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| 351 | } msg]} { |
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| 352 | # Error posting menu (e.g. bogus -postcommand). Unpost it and |
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| 353 | # reflect the error. |
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| 354 | |
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| 355 | set savedInfo $errorInfo |
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| 356 | MenuUnpost {} |
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| 357 | error $msg $savedInfo |
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| 358 | |
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| 359 | } |
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| 360 | |
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| 361 | set Priv(tearoff) $tearoff |
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| 362 | if {$tearoff != 0} { |
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| 363 | focus $menu |
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| 364 | if {[winfo viewable $w]} { |
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| 365 | SaveGrabInfo $w |
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| 366 | grab -global $w |
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| 367 | } |
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| 368 | } |
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| 369 | } |
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| 370 | |
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| 371 | # ::tk::MenuUnpost -- |
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| 372 | # This procedure unposts a given menu, plus all of its ancestors up |
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| 373 | # to (and including) a menubutton, if any. It also restores various |
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| 374 | # values to what they were before the menu was posted, and releases |
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| 375 | # a grab if there's a menubutton involved. Special notes: |
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| 376 | # 1. It's important to unpost all menus before releasing the grab, so |
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| 377 | # that any Enter-Leave events (e.g. from menu back to main |
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| 378 | # application) have mode NotifyGrab. |
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| 379 | # 2. Be sure to enclose various groups of commands in "catch" so that |
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| 380 | # the procedure will complete even if the menubutton or the menu |
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| 381 | # or the grab window has been deleted. |
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| 382 | # |
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| 383 | # Arguments: |
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| 384 | # menu - Name of a menu to unpost. Ignored if there |
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| 385 | # is a posted menubutton. |
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| 386 | |
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| 387 | proc ::tk::MenuUnpost menu { |
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| 388 | global tcl_platform |
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| 389 | variable ::tk::Priv |
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| 390 | set mb $Priv(postedMb) |
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| 391 | |
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| 392 | # Restore focus right away (otherwise X will take focus away when |
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| 393 | # the menu is unmapped and under some window managers (e.g. olvwm) |
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| 394 | # we'll lose the focus completely). |
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| 395 | |
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| 396 | catch {focus $Priv(focus)} |
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| 397 | set Priv(focus) "" |
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| 398 | |
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| 399 | # Unpost menu(s) and restore some stuff that's dependent on |
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| 400 | # what was posted. |
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| 401 | |
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| 402 | catch { |
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| 403 | if {[string compare $mb ""]} { |
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| 404 | set menu [$mb cget -menu] |
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| 405 | $menu unpost |
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| 406 | set Priv(postedMb) {} |
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| 407 | $mb configure -cursor $Priv(cursor) |
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| 408 | $mb configure -relief $Priv(relief) |
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| 409 | } elseif {[string compare $Priv(popup) ""]} { |
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| 410 | $Priv(popup) unpost |
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| 411 | set Priv(popup) {} |
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| 412 | } elseif {[string compare [$menu cget -type] "menubar"] \ |
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| 413 | && [string compare [$menu cget -type] "tearoff"]} { |
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| 414 | # We're in a cascaded sub-menu from a torn-off menu or popup. |
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| 415 | # Unpost all the menus up to the toplevel one (but not |
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| 416 | # including the top-level torn-off one) and deactivate the |
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| 417 | # top-level torn off menu if there is one. |
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| 418 | |
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| 419 | while {1} { |
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| 420 | set parent [winfo parent $menu] |
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| 421 | if {[string compare [winfo class $parent] "Menu"] \ |
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| 422 | || ![winfo ismapped $parent]} { |
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| 423 | break |
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| 424 | } |
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| 425 | $parent activate none |
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| 426 | $parent postcascade none |
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| 427 | GenerateMenuSelect $parent |
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| 428 | set type [$parent cget -type] |
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| 429 | if {[string equal $type "menubar"] || \ |
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| 430 | [string equal $type "tearoff"]} { |
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| 431 | break |
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| 432 | } |
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| 433 | set menu $parent |
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| 434 | } |
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| 435 | if {[string compare [$menu cget -type] "menubar"]} { |
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| 436 | $menu unpost |
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| 437 | } |
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| 438 | } |
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| 439 | } |
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| 440 | |
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| 441 | if {($Priv(tearoff) != 0) || $Priv(menuBar) ne ""} { |
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| 442 | # Release grab, if any, and restore the previous grab, if there |
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| 443 | # was one. |
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| 444 | if {[string compare $menu ""]} { |
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| 445 | set grab [grab current $menu] |
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| 446 | if {[string compare $grab ""]} { |
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| 447 | grab release $grab |
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| 448 | } |
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| 449 | } |
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| 450 | RestoreOldGrab |
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| 451 | if {$Priv(menuBar) ne ""} { |
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| 452 | $Priv(menuBar) configure -cursor $Priv(cursor) |
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| 453 | set Priv(menuBar) {} |
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| 454 | } |
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| 455 | if {[tk windowingsystem] ne "x11"} { |
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| 456 | set Priv(tearoff) 0 |
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| 457 | } |
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| 458 | } |
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| 459 | } |
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| 460 | |
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| 461 | # ::tk::MbMotion -- |
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| 462 | # This procedure handles mouse motion events inside menubuttons, and |
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| 463 | # also outside menubuttons when a menubutton has a grab (e.g. when a |
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| 464 | # menu selection operation is in progress). |
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| 465 | # |
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| 466 | # Arguments: |
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| 467 | # w - The name of the menubutton widget. |
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| 468 | # upDown - "down" means button 1 is pressed, "up" means |
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| 469 | # it isn't. |
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| 470 | # rootx, rooty - Coordinates of mouse, in (virtual?) root window. |
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| 471 | |
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| 472 | proc ::tk::MbMotion {w upDown rootx rooty} { |
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| 473 | variable ::tk::Priv |
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| 474 | |
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| 475 | if {[string equal $Priv(inMenubutton) $w]} { |
---|
| 476 | return |
---|
| 477 | } |
---|
| 478 | set new [winfo containing $rootx $rooty] |
---|
| 479 | if {[string compare $new $Priv(inMenubutton)] \ |
---|
| 480 | && ([string equal $new ""] \ |
---|
| 481 | || [string equal [winfo toplevel $new] [winfo toplevel $w]])} { |
---|
| 482 | if {[string compare $Priv(inMenubutton) ""]} { |
---|
| 483 | MbLeave $Priv(inMenubutton) |
---|
| 484 | } |
---|
| 485 | if {[string compare $new ""] \ |
---|
| 486 | && [string equal [winfo class $new] "Menubutton"] \ |
---|
| 487 | && ([$new cget -indicatoron] == 0) \ |
---|
| 488 | && ([$w cget -indicatoron] == 0)} { |
---|
| 489 | if {[string equal $upDown "down"]} { |
---|
| 490 | MbPost $new $rootx $rooty |
---|
| 491 | } else { |
---|
| 492 | MbEnter $new |
---|
| 493 | } |
---|
| 494 | } |
---|
| 495 | } |
---|
| 496 | } |
---|
| 497 | |
---|
| 498 | # ::tk::MbButtonUp -- |
---|
| 499 | # This procedure is invoked to handle button 1 releases for menubuttons. |
---|
| 500 | # If the release happens inside the menubutton then leave its menu |
---|
| 501 | # posted with element 0 activated. Otherwise, unpost the menu. |
---|
| 502 | # |
---|
| 503 | # Arguments: |
---|
| 504 | # w - The name of the menubutton widget. |
---|
| 505 | |
---|
| 506 | proc ::tk::MbButtonUp w { |
---|
| 507 | variable ::tk::Priv |
---|
| 508 | global tcl_platform |
---|
| 509 | |
---|
| 510 | set menu [$w cget -menu] |
---|
| 511 | set tearoff [expr {[tk windowingsystem] eq "x11" || \ |
---|
| 512 | ($menu ne "" && [$menu cget -type] eq "tearoff")}] |
---|
| 513 | if {($tearoff != 0) && $Priv(postedMb) eq $w \ |
---|
| 514 | && $Priv(inMenubutton) eq $w} { |
---|
| 515 | MenuFirstEntry [$Priv(postedMb) cget -menu] |
---|
| 516 | } else { |
---|
| 517 | MenuUnpost {} |
---|
| 518 | } |
---|
| 519 | } |
---|
| 520 | |
---|
| 521 | # ::tk::MenuMotion -- |
---|
| 522 | # This procedure is called to handle mouse motion events for menus. |
---|
| 523 | # It does two things. First, it resets the active element in the |
---|
| 524 | # menu, if the mouse is over the menu. Second, if a mouse button |
---|
| 525 | # is down, it posts and unposts cascade entries to match the mouse |
---|
| 526 | # position. |
---|
| 527 | # |
---|
| 528 | # Arguments: |
---|
| 529 | # menu - The menu window. |
---|
| 530 | # x - The x position of the mouse. |
---|
| 531 | # y - The y position of the mouse. |
---|
| 532 | # state - Modifier state (tells whether buttons are down). |
---|
| 533 | |
---|
| 534 | proc ::tk::MenuMotion {menu x y state} { |
---|
| 535 | variable ::tk::Priv |
---|
| 536 | if {[string equal $menu $Priv(window)]} { |
---|
| 537 | if {[string equal [$menu cget -type] "menubar"]} { |
---|
| 538 | if {[info exists Priv(focus)] && \ |
---|
| 539 | [string compare $menu $Priv(focus)]} { |
---|
| 540 | $menu activate @$x,$y |
---|
| 541 | GenerateMenuSelect $menu |
---|
| 542 | } |
---|
| 543 | } else { |
---|
| 544 | $menu activate @$x,$y |
---|
| 545 | GenerateMenuSelect $menu |
---|
| 546 | } |
---|
| 547 | } |
---|
| 548 | if {($state & 0x1f00) != 0} { |
---|
| 549 | $menu postcascade active |
---|
| 550 | } |
---|
| 551 | } |
---|
| 552 | |
---|
| 553 | # ::tk::MenuButtonDown -- |
---|
| 554 | # Handles button presses in menus. There are a couple of tricky things |
---|
| 555 | # here: |
---|
| 556 | # 1. Change the posted cascade entry (if any) to match the mouse position. |
---|
| 557 | # 2. If there is a posted menubutton, must grab to the menubutton; this |
---|
| 558 | # overrrides the implicit grab on button press, so that the menu |
---|
| 559 | # button can track mouse motions over other menubuttons and change |
---|
| 560 | # the posted menu. |
---|
| 561 | # 3. If there's no posted menubutton (e.g. because we're a torn-off menu |
---|
| 562 | # or one of its descendants) must grab to the top-level menu so that |
---|
| 563 | # we can track mouse motions across the entire menu hierarchy. |
---|
| 564 | # |
---|
| 565 | # Arguments: |
---|
| 566 | # menu - The menu window. |
---|
| 567 | |
---|
| 568 | proc ::tk::MenuButtonDown menu { |
---|
| 569 | variable ::tk::Priv |
---|
| 570 | global tcl_platform |
---|
| 571 | |
---|
| 572 | if {![winfo viewable $menu]} { |
---|
| 573 | return |
---|
| 574 | } |
---|
| 575 | $menu postcascade active |
---|
| 576 | if {[string compare $Priv(postedMb) ""] && \ |
---|
| 577 | [winfo viewable $Priv(postedMb)]} { |
---|
| 578 | grab -global $Priv(postedMb) |
---|
| 579 | } else { |
---|
| 580 | while {[string equal [$menu cget -type] "normal"] \ |
---|
| 581 | && [string equal [winfo class [winfo parent $menu]] "Menu"] \ |
---|
| 582 | && [winfo ismapped [winfo parent $menu]]} { |
---|
| 583 | set menu [winfo parent $menu] |
---|
| 584 | } |
---|
| 585 | |
---|
| 586 | if {[string equal $Priv(menuBar) {}]} { |
---|
| 587 | set Priv(menuBar) $menu |
---|
| 588 | set Priv(cursor) [$menu cget -cursor] |
---|
| 589 | $menu configure -cursor arrow |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | # Don't update grab information if the grab window isn't changing. |
---|
| 593 | # Otherwise, we'll get an error when we unpost the menus and |
---|
| 594 | # restore the grab, since the old grab window will not be viewable |
---|
| 595 | # anymore. |
---|
| 596 | |
---|
| 597 | if {[string compare $menu [grab current $menu]]} { |
---|
| 598 | SaveGrabInfo $menu |
---|
| 599 | } |
---|
| 600 | |
---|
| 601 | # Must re-grab even if the grab window hasn't changed, in order |
---|
| 602 | # to release the implicit grab from the button press. |
---|
| 603 | |
---|
| 604 | if {[string equal [tk windowingsystem] "x11"]} { |
---|
| 605 | grab -global $menu |
---|
| 606 | } |
---|
| 607 | } |
---|
| 608 | } |
---|
| 609 | |
---|
| 610 | # ::tk::MenuLeave -- |
---|
| 611 | # This procedure is invoked to handle Leave events for a menu. It |
---|
| 612 | # deactivates everything unless the active element is a cascade element |
---|
| 613 | # and the mouse is now over the submenu. |
---|
| 614 | # |
---|
| 615 | # Arguments: |
---|
| 616 | # menu - The menu window. |
---|
| 617 | # rootx, rooty - Root coordinates of mouse. |
---|
| 618 | # state - Modifier state. |
---|
| 619 | |
---|
| 620 | proc ::tk::MenuLeave {menu rootx rooty state} { |
---|
| 621 | variable ::tk::Priv |
---|
| 622 | set Priv(window) {} |
---|
| 623 | if {[string equal [$menu index active] "none"]} { |
---|
| 624 | return |
---|
| 625 | } |
---|
| 626 | if {[string equal [$menu type active] "cascade"] |
---|
| 627 | && [string equal [winfo containing $rootx $rooty] \ |
---|
| 628 | [$menu entrycget active -menu]]} { |
---|
| 629 | return |
---|
| 630 | } |
---|
| 631 | $menu activate none |
---|
| 632 | GenerateMenuSelect $menu |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | # ::tk::MenuInvoke -- |
---|
| 636 | # This procedure is invoked when button 1 is released over a menu. |
---|
| 637 | # It invokes the appropriate menu action and unposts the menu if |
---|
| 638 | # it came from a menubutton. |
---|
| 639 | # |
---|
| 640 | # Arguments: |
---|
| 641 | # w - Name of the menu widget. |
---|
| 642 | # buttonRelease - 1 means this procedure is called because of |
---|
| 643 | # a button release; 0 means because of keystroke. |
---|
| 644 | |
---|
| 645 | proc ::tk::MenuInvoke {w buttonRelease} { |
---|
| 646 | variable ::tk::Priv |
---|
| 647 | |
---|
| 648 | if {$buttonRelease && [string equal $Priv(window) {}]} { |
---|
| 649 | # Mouse was pressed over a menu without a menu button, then |
---|
| 650 | # dragged off the menu (possibly with a cascade posted) and |
---|
| 651 | # released. Unpost everything and quit. |
---|
| 652 | |
---|
| 653 | $w postcascade none |
---|
| 654 | $w activate none |
---|
| 655 | event generate $w <<MenuSelect>> |
---|
| 656 | MenuUnpost $w |
---|
| 657 | return |
---|
| 658 | } |
---|
| 659 | if {[string equal [$w type active] "cascade"]} { |
---|
| 660 | $w postcascade active |
---|
| 661 | set menu [$w entrycget active -menu] |
---|
| 662 | MenuFirstEntry $menu |
---|
| 663 | } elseif {[string equal [$w type active] "tearoff"]} { |
---|
| 664 | ::tk::TearOffMenu $w |
---|
| 665 | MenuUnpost $w |
---|
| 666 | } elseif {[string equal [$w cget -type] "menubar"]} { |
---|
| 667 | $w postcascade none |
---|
| 668 | set active [$w index active] |
---|
| 669 | set isCascade [string equal [$w type $active] "cascade"] |
---|
| 670 | |
---|
| 671 | # Only de-activate the active item if it's a cascade; this prevents |
---|
| 672 | # the annoying "activation flicker" you otherwise get with |
---|
| 673 | # checkbuttons/commands/etc. on menubars |
---|
| 674 | |
---|
| 675 | if { $isCascade } { |
---|
| 676 | $w activate none |
---|
| 677 | event generate $w <<MenuSelect>> |
---|
| 678 | } |
---|
| 679 | |
---|
| 680 | MenuUnpost $w |
---|
| 681 | |
---|
| 682 | # If the active item is not a cascade, invoke it. This enables |
---|
| 683 | # the use of checkbuttons/commands/etc. on menubars (which is legal, |
---|
| 684 | # but not recommended) |
---|
| 685 | |
---|
| 686 | if { !$isCascade } { |
---|
| 687 | uplevel #0 [list $w invoke $active] |
---|
| 688 | } |
---|
| 689 | } else { |
---|
| 690 | MenuUnpost $w |
---|
| 691 | uplevel #0 [list $w invoke active] |
---|
| 692 | } |
---|
| 693 | } |
---|
| 694 | |
---|
| 695 | # ::tk::MenuEscape -- |
---|
| 696 | # This procedure is invoked for the Cancel (or Escape) key. It unposts |
---|
| 697 | # the given menu and, if it is the top-level menu for a menu button, |
---|
| 698 | # unposts the menu button as well. |
---|
| 699 | # |
---|
| 700 | # Arguments: |
---|
| 701 | # menu - Name of the menu window. |
---|
| 702 | |
---|
| 703 | proc ::tk::MenuEscape menu { |
---|
| 704 | set parent [winfo parent $menu] |
---|
| 705 | if {[string compare [winfo class $parent] "Menu"]} { |
---|
| 706 | MenuUnpost $menu |
---|
| 707 | } elseif {[string equal [$parent cget -type] "menubar"]} { |
---|
| 708 | MenuUnpost $menu |
---|
| 709 | RestoreOldGrab |
---|
| 710 | } else { |
---|
| 711 | MenuNextMenu $menu left |
---|
| 712 | } |
---|
| 713 | } |
---|
| 714 | |
---|
| 715 | # The following routines handle arrow keys. Arrow keys behave |
---|
| 716 | # differently depending on whether the menu is a menu bar or not. |
---|
| 717 | |
---|
| 718 | proc ::tk::MenuUpArrow {menu} { |
---|
| 719 | if {[string equal [$menu cget -type] "menubar"]} { |
---|
| 720 | MenuNextMenu $menu left |
---|
| 721 | } else { |
---|
| 722 | MenuNextEntry $menu -1 |
---|
| 723 | } |
---|
| 724 | } |
---|
| 725 | |
---|
| 726 | proc ::tk::MenuDownArrow {menu} { |
---|
| 727 | if {[string equal [$menu cget -type] "menubar"]} { |
---|
| 728 | MenuNextMenu $menu right |
---|
| 729 | } else { |
---|
| 730 | MenuNextEntry $menu 1 |
---|
| 731 | } |
---|
| 732 | } |
---|
| 733 | |
---|
| 734 | proc ::tk::MenuLeftArrow {menu} { |
---|
| 735 | if {[string equal [$menu cget -type] "menubar"]} { |
---|
| 736 | MenuNextEntry $menu -1 |
---|
| 737 | } else { |
---|
| 738 | MenuNextMenu $menu left |
---|
| 739 | } |
---|
| 740 | } |
---|
| 741 | |
---|
| 742 | proc ::tk::MenuRightArrow {menu} { |
---|
| 743 | if {[string equal [$menu cget -type] "menubar"]} { |
---|
| 744 | MenuNextEntry $menu 1 |
---|
| 745 | } else { |
---|
| 746 | MenuNextMenu $menu right |
---|
| 747 | } |
---|
| 748 | } |
---|
| 749 | |
---|
| 750 | # ::tk::MenuNextMenu -- |
---|
| 751 | # This procedure is invoked to handle "left" and "right" traversal |
---|
| 752 | # motions in menus. It traverses to the next menu in a menu bar, |
---|
| 753 | # or into or out of a cascaded menu. |
---|
| 754 | # |
---|
| 755 | # Arguments: |
---|
| 756 | # menu - The menu that received the keyboard |
---|
| 757 | # event. |
---|
| 758 | # direction - Direction in which to move: "left" or "right" |
---|
| 759 | |
---|
| 760 | proc ::tk::MenuNextMenu {menu direction} { |
---|
| 761 | variable ::tk::Priv |
---|
| 762 | |
---|
| 763 | # First handle traversals into and out of cascaded menus. |
---|
| 764 | |
---|
| 765 | if {[string equal $direction "right"]} { |
---|
| 766 | set count 1 |
---|
| 767 | set parent [winfo parent $menu] |
---|
| 768 | set class [winfo class $parent] |
---|
| 769 | if {[string equal [$menu type active] "cascade"]} { |
---|
| 770 | $menu postcascade active |
---|
| 771 | set m2 [$menu entrycget active -menu] |
---|
| 772 | if {[string compare $m2 ""]} { |
---|
| 773 | MenuFirstEntry $m2 |
---|
| 774 | } |
---|
| 775 | return |
---|
| 776 | } else { |
---|
| 777 | set parent [winfo parent $menu] |
---|
| 778 | while {[string compare $parent "."]} { |
---|
| 779 | if {[string equal [winfo class $parent] "Menu"] \ |
---|
| 780 | && [string equal [$parent cget -type] "menubar"]} { |
---|
| 781 | tk_menuSetFocus $parent |
---|
| 782 | MenuNextEntry $parent 1 |
---|
| 783 | return |
---|
| 784 | } |
---|
| 785 | set parent [winfo parent $parent] |
---|
| 786 | } |
---|
| 787 | } |
---|
| 788 | } else { |
---|
| 789 | set count -1 |
---|
| 790 | set m2 [winfo parent $menu] |
---|
| 791 | if {[string equal [winfo class $m2] "Menu"]} { |
---|
| 792 | $menu activate none |
---|
| 793 | GenerateMenuSelect $menu |
---|
| 794 | tk_menuSetFocus $m2 |
---|
| 795 | |
---|
| 796 | $m2 postcascade none |
---|
| 797 | |
---|
| 798 | if {[string compare [$m2 cget -type] "menubar"]} { |
---|
| 799 | return |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | } |
---|
| 803 | |
---|
| 804 | # Can't traverse into or out of a cascaded menu. Go to the next |
---|
| 805 | # or previous menubutton, if that makes sense. |
---|
| 806 | |
---|
| 807 | set m2 [winfo parent $menu] |
---|
| 808 | if {[string equal [winfo class $m2] "Menu"]} { |
---|
| 809 | if {[string equal [$m2 cget -type] "menubar"]} { |
---|
| 810 | tk_menuSetFocus $m2 |
---|
| 811 | MenuNextEntry $m2 -1 |
---|
| 812 | return |
---|
| 813 | } |
---|
| 814 | } |
---|
| 815 | |
---|
| 816 | set w $Priv(postedMb) |
---|
| 817 | if {[string equal $w ""]} { |
---|
| 818 | return |
---|
| 819 | } |
---|
| 820 | set buttons [winfo children [winfo parent $w]] |
---|
| 821 | set length [llength $buttons] |
---|
| 822 | set i [expr {[lsearch -exact $buttons $w] + $count}] |
---|
| 823 | while {1} { |
---|
| 824 | while {$i < 0} { |
---|
| 825 | incr i $length |
---|
| 826 | } |
---|
| 827 | while {$i >= $length} { |
---|
| 828 | incr i -$length |
---|
| 829 | } |
---|
| 830 | set mb [lindex $buttons $i] |
---|
| 831 | if {[string equal [winfo class $mb] "Menubutton"] \ |
---|
| 832 | && [string compare [$mb cget -state] "disabled"] \ |
---|
| 833 | && [string compare [$mb cget -menu] ""] \ |
---|
| 834 | && [string compare [[$mb cget -menu] index last] "none"]} { |
---|
| 835 | break |
---|
| 836 | } |
---|
| 837 | if {[string equal $mb $w]} { |
---|
| 838 | return |
---|
| 839 | } |
---|
| 840 | incr i $count |
---|
| 841 | } |
---|
| 842 | MbPost $mb |
---|
| 843 | MenuFirstEntry [$mb cget -menu] |
---|
| 844 | } |
---|
| 845 | |
---|
| 846 | # ::tk::MenuNextEntry -- |
---|
| 847 | # Activate the next higher or lower entry in the posted menu, |
---|
| 848 | # wrapping around at the ends. Disabled entries are skipped. |
---|
| 849 | # |
---|
| 850 | # Arguments: |
---|
| 851 | # menu - Menu window that received the keystroke. |
---|
| 852 | # count - 1 means go to the next lower entry, |
---|
| 853 | # -1 means go to the next higher entry. |
---|
| 854 | |
---|
| 855 | proc ::tk::MenuNextEntry {menu count} { |
---|
| 856 | |
---|
| 857 | if {[string equal [$menu index last] "none"]} { |
---|
| 858 | return |
---|
| 859 | } |
---|
| 860 | set length [expr {[$menu index last]+1}] |
---|
| 861 | set quitAfter $length |
---|
| 862 | set active [$menu index active] |
---|
| 863 | if {[string equal $active "none"]} { |
---|
| 864 | set i 0 |
---|
| 865 | } else { |
---|
| 866 | set i [expr {$active + $count}] |
---|
| 867 | } |
---|
| 868 | while {1} { |
---|
| 869 | if {$quitAfter <= 0} { |
---|
| 870 | # We've tried every entry in the menu. Either there are |
---|
| 871 | # none, or they're all disabled. Just give up. |
---|
| 872 | |
---|
| 873 | return |
---|
| 874 | } |
---|
| 875 | while {$i < 0} { |
---|
| 876 | incr i $length |
---|
| 877 | } |
---|
| 878 | while {$i >= $length} { |
---|
| 879 | incr i -$length |
---|
| 880 | } |
---|
| 881 | if {[catch {$menu entrycget $i -state} state] == 0} { |
---|
| 882 | if {$state ne "disabled" && \ |
---|
| 883 | ($i!=0 || [$menu cget -type] ne "tearoff" \ |
---|
| 884 | || [$menu type 0] ne "tearoff")} { |
---|
| 885 | break |
---|
| 886 | } |
---|
| 887 | } |
---|
| 888 | if {$i == $active} { |
---|
| 889 | return |
---|
| 890 | } |
---|
| 891 | incr i $count |
---|
| 892 | incr quitAfter -1 |
---|
| 893 | } |
---|
| 894 | $menu activate $i |
---|
| 895 | GenerateMenuSelect $menu |
---|
| 896 | |
---|
| 897 | if {[string equal [$menu type $i] "cascade"] \ |
---|
| 898 | && [string equal [$menu cget -type] "menubar"]} { |
---|
| 899 | set cascade [$menu entrycget $i -menu] |
---|
| 900 | if {[string compare $cascade ""]} { |
---|
| 901 | # Here we auto-post a cascade. This is necessary when |
---|
| 902 | # we traverse left/right in the menubar, but undesirable when |
---|
| 903 | # we traverse up/down in a menu. |
---|
| 904 | $menu postcascade $i |
---|
| 905 | MenuFirstEntry $cascade |
---|
| 906 | } |
---|
| 907 | } |
---|
| 908 | } |
---|
| 909 | |
---|
| 910 | # ::tk::MenuFind -- |
---|
| 911 | # This procedure searches the entire window hierarchy under w for |
---|
| 912 | # a menubutton that isn't disabled and whose underlined character |
---|
| 913 | # is "char" or an entry in a menubar that isn't disabled and whose |
---|
| 914 | # underlined character is "char". |
---|
| 915 | # It returns the name of that window, if found, or an |
---|
| 916 | # empty string if no matching window was found. If "char" is an |
---|
| 917 | # empty string then the procedure returns the name of the first |
---|
| 918 | # menubutton found that isn't disabled. |
---|
| 919 | # |
---|
| 920 | # Arguments: |
---|
| 921 | # w - Name of window where key was typed. |
---|
| 922 | # char - Underlined character to search for; |
---|
| 923 | # may be either upper or lower case, and |
---|
| 924 | # will match either upper or lower case. |
---|
| 925 | |
---|
| 926 | proc ::tk::MenuFind {w char} { |
---|
| 927 | set char [string tolower $char] |
---|
| 928 | set windowlist [winfo child $w] |
---|
| 929 | |
---|
| 930 | foreach child $windowlist { |
---|
| 931 | # Don't descend into other toplevels. |
---|
| 932 | if {[string compare [winfo toplevel $w] [winfo toplevel $child]]} { |
---|
| 933 | continue |
---|
| 934 | } |
---|
| 935 | if {[string equal [winfo class $child] "Menu"] && \ |
---|
| 936 | [string equal [$child cget -type] "menubar"]} { |
---|
| 937 | if {[string equal $char ""]} { |
---|
| 938 | return $child |
---|
| 939 | } |
---|
| 940 | set last [$child index last] |
---|
| 941 | for {set i [$child cget -tearoff]} {$i <= $last} {incr i} { |
---|
| 942 | if {[string equal [$child type $i] "separator"]} { |
---|
| 943 | continue |
---|
| 944 | } |
---|
| 945 | set char2 [string index [$child entrycget $i -label] \ |
---|
| 946 | [$child entrycget $i -underline]] |
---|
| 947 | if {[string equal $char [string tolower $char2]] \ |
---|
| 948 | || [string equal $char ""]} { |
---|
| 949 | if {[string compare [$child entrycget $i -state] "disabled"]} { |
---|
| 950 | return $child |
---|
| 951 | } |
---|
| 952 | } |
---|
| 953 | } |
---|
| 954 | } |
---|
| 955 | } |
---|
| 956 | |
---|
| 957 | foreach child $windowlist { |
---|
| 958 | # Don't descend into other toplevels. |
---|
| 959 | if {[string compare [winfo toplevel $w] [winfo toplevel $child]]} { |
---|
| 960 | continue |
---|
| 961 | } |
---|
| 962 | switch [winfo class $child] { |
---|
| 963 | Menubutton { |
---|
| 964 | set char2 [string index [$child cget -text] \ |
---|
| 965 | [$child cget -underline]] |
---|
| 966 | if {[string equal $char [string tolower $char2]] \ |
---|
| 967 | || [string equal $char ""]} { |
---|
| 968 | if {[string compare [$child cget -state] "disabled"]} { |
---|
| 969 | return $child |
---|
| 970 | } |
---|
| 971 | } |
---|
| 972 | } |
---|
| 973 | |
---|
| 974 | default { |
---|
| 975 | set match [MenuFind $child $char] |
---|
| 976 | if {[string compare $match ""]} { |
---|
| 977 | return $match |
---|
| 978 | } |
---|
| 979 | } |
---|
| 980 | } |
---|
| 981 | } |
---|
| 982 | return {} |
---|
| 983 | } |
---|
| 984 | |
---|
| 985 | # ::tk::TraverseToMenu -- |
---|
| 986 | # This procedure implements keyboard traversal of menus. Given an |
---|
| 987 | # ASCII character "char", it looks for a menubutton with that character |
---|
| 988 | # underlined. If one is found, it posts the menubutton's menu |
---|
| 989 | # |
---|
| 990 | # Arguments: |
---|
| 991 | # w - Window in which the key was typed (selects |
---|
| 992 | # a toplevel window). |
---|
| 993 | # char - Character that selects a menu. The case |
---|
| 994 | # is ignored. If an empty string, nothing |
---|
| 995 | # happens. |
---|
| 996 | |
---|
| 997 | proc ::tk::TraverseToMenu {w char} { |
---|
| 998 | variable ::tk::Priv |
---|
| 999 | if {[string equal $char ""]} { |
---|
| 1000 | return |
---|
| 1001 | } |
---|
| 1002 | while {[string equal [winfo class $w] "Menu"]} { |
---|
| 1003 | if {[string compare [$w cget -type] "menubar"] \ |
---|
| 1004 | && [string equal $Priv(postedMb) ""]} { |
---|
| 1005 | return |
---|
| 1006 | } |
---|
| 1007 | if {[string equal [$w cget -type] "menubar"]} { |
---|
| 1008 | break |
---|
| 1009 | } |
---|
| 1010 | set w [winfo parent $w] |
---|
| 1011 | } |
---|
| 1012 | set w [MenuFind [winfo toplevel $w] $char] |
---|
| 1013 | if {[string compare $w ""]} { |
---|
| 1014 | if {[string equal [winfo class $w] "Menu"]} { |
---|
| 1015 | tk_menuSetFocus $w |
---|
| 1016 | set Priv(window) $w |
---|
| 1017 | SaveGrabInfo $w |
---|
| 1018 | grab -global $w |
---|
| 1019 | TraverseWithinMenu $w $char |
---|
| 1020 | } else { |
---|
| 1021 | MbPost $w |
---|
| 1022 | MenuFirstEntry [$w cget -menu] |
---|
| 1023 | } |
---|
| 1024 | } |
---|
| 1025 | } |
---|
| 1026 | |
---|
| 1027 | # ::tk::FirstMenu -- |
---|
| 1028 | # This procedure traverses to the first menubutton in the toplevel |
---|
| 1029 | # for a given window, and posts that menubutton's menu. |
---|
| 1030 | # |
---|
| 1031 | # Arguments: |
---|
| 1032 | # w - Name of a window. Selects which toplevel |
---|
| 1033 | # to search for menubuttons. |
---|
| 1034 | |
---|
| 1035 | proc ::tk::FirstMenu w { |
---|
| 1036 | variable ::tk::Priv |
---|
| 1037 | set w [MenuFind [winfo toplevel $w] ""] |
---|
| 1038 | if {[string compare $w ""]} { |
---|
| 1039 | if {[string equal [winfo class $w] "Menu"]} { |
---|
| 1040 | tk_menuSetFocus $w |
---|
| 1041 | set Priv(window) $w |
---|
| 1042 | SaveGrabInfo $w |
---|
| 1043 | grab -global $w |
---|
| 1044 | MenuFirstEntry $w |
---|
| 1045 | } else { |
---|
| 1046 | MbPost $w |
---|
| 1047 | MenuFirstEntry [$w cget -menu] |
---|
| 1048 | } |
---|
| 1049 | } |
---|
| 1050 | } |
---|
| 1051 | |
---|
| 1052 | # ::tk::TraverseWithinMenu |
---|
| 1053 | # This procedure implements keyboard traversal within a menu. It |
---|
| 1054 | # searches for an entry in the menu that has "char" underlined. If |
---|
| 1055 | # such an entry is found, it is invoked and the menu is unposted. |
---|
| 1056 | # |
---|
| 1057 | # Arguments: |
---|
| 1058 | # w - The name of the menu widget. |
---|
| 1059 | # char - The character to look for; case is |
---|
| 1060 | # ignored. If the string is empty then |
---|
| 1061 | # nothing happens. |
---|
| 1062 | |
---|
| 1063 | proc ::tk::TraverseWithinMenu {w char} { |
---|
| 1064 | if {[string equal $char ""]} { |
---|
| 1065 | return |
---|
| 1066 | } |
---|
| 1067 | set char [string tolower $char] |
---|
| 1068 | set last [$w index last] |
---|
| 1069 | if {[string equal $last "none"]} { |
---|
| 1070 | return |
---|
| 1071 | } |
---|
| 1072 | for {set i 0} {$i <= $last} {incr i} { |
---|
| 1073 | if {[catch {set char2 [string index \ |
---|
| 1074 | [$w entrycget $i -label] [$w entrycget $i -underline]]}]} { |
---|
| 1075 | continue |
---|
| 1076 | } |
---|
| 1077 | if {[string equal $char [string tolower $char2]]} { |
---|
| 1078 | if {[string equal [$w type $i] "cascade"]} { |
---|
| 1079 | $w activate $i |
---|
| 1080 | $w postcascade active |
---|
| 1081 | event generate $w <<MenuSelect>> |
---|
| 1082 | set m2 [$w entrycget $i -menu] |
---|
| 1083 | if {[string compare $m2 ""]} { |
---|
| 1084 | MenuFirstEntry $m2 |
---|
| 1085 | } |
---|
| 1086 | } else { |
---|
| 1087 | MenuUnpost $w |
---|
| 1088 | uplevel #0 [list $w invoke $i] |
---|
| 1089 | } |
---|
| 1090 | return |
---|
| 1091 | } |
---|
| 1092 | } |
---|
| 1093 | } |
---|
| 1094 | |
---|
| 1095 | # ::tk::MenuFirstEntry -- |
---|
| 1096 | # Given a menu, this procedure finds the first entry that isn't |
---|
| 1097 | # disabled or a tear-off or separator, and activates that entry. |
---|
| 1098 | # However, if there is already an active entry in the menu (e.g., |
---|
| 1099 | # because of a previous call to tk::PostOverPoint) then the active |
---|
| 1100 | # entry isn't changed. This procedure also sets the input focus |
---|
| 1101 | # to the menu. |
---|
| 1102 | # |
---|
| 1103 | # Arguments: |
---|
| 1104 | # menu - Name of the menu window (possibly empty). |
---|
| 1105 | |
---|
| 1106 | proc ::tk::MenuFirstEntry menu { |
---|
| 1107 | if {[string equal $menu ""]} { |
---|
| 1108 | return |
---|
| 1109 | } |
---|
| 1110 | tk_menuSetFocus $menu |
---|
| 1111 | if {[string compare [$menu index active] "none"]} { |
---|
| 1112 | return |
---|
| 1113 | } |
---|
| 1114 | set last [$menu index last] |
---|
| 1115 | if {[string equal $last "none"]} { |
---|
| 1116 | return |
---|
| 1117 | } |
---|
| 1118 | for {set i 0} {$i <= $last} {incr i} { |
---|
| 1119 | if {([catch {set state [$menu entrycget $i -state]}] == 0) \ |
---|
| 1120 | && [string compare $state "disabled"] \ |
---|
| 1121 | && [string compare [$menu type $i] "tearoff"]} { |
---|
| 1122 | $menu activate $i |
---|
| 1123 | GenerateMenuSelect $menu |
---|
| 1124 | # Only post the cascade if the current menu is a menubar; |
---|
| 1125 | # otherwise, if the first entry of the cascade is a cascade, |
---|
| 1126 | # we can get an annoying cascading effect resulting in a bunch of |
---|
| 1127 | # menus getting posted (bug 676) |
---|
| 1128 | if {[string equal [$menu type $i] "cascade"] && \ |
---|
| 1129 | [string equal [$menu cget -type] "menubar"]} { |
---|
| 1130 | set cascade [$menu entrycget $i -menu] |
---|
| 1131 | if {[string compare $cascade ""]} { |
---|
| 1132 | $menu postcascade $i |
---|
| 1133 | MenuFirstEntry $cascade |
---|
| 1134 | } |
---|
| 1135 | } |
---|
| 1136 | return |
---|
| 1137 | } |
---|
| 1138 | } |
---|
| 1139 | } |
---|
| 1140 | |
---|
| 1141 | # ::tk::MenuFindName -- |
---|
| 1142 | # Given a menu and a text string, return the index of the menu entry |
---|
| 1143 | # that displays the string as its label. If there is no such entry, |
---|
| 1144 | # return an empty string. This procedure is tricky because some names |
---|
| 1145 | # like "active" have a special meaning in menu commands, so we can't |
---|
| 1146 | # always use the "index" widget command. |
---|
| 1147 | # |
---|
| 1148 | # Arguments: |
---|
| 1149 | # menu - Name of the menu widget. |
---|
| 1150 | # s - String to look for. |
---|
| 1151 | |
---|
| 1152 | proc ::tk::MenuFindName {menu s} { |
---|
| 1153 | set i "" |
---|
| 1154 | if {![regexp {^active$|^last$|^none$|^[0-9]|^@} $s]} { |
---|
| 1155 | catch {set i [$menu index $s]} |
---|
| 1156 | return $i |
---|
| 1157 | } |
---|
| 1158 | set last [$menu index last] |
---|
| 1159 | if {[string equal $last "none"]} { |
---|
| 1160 | return |
---|
| 1161 | } |
---|
| 1162 | for {set i 0} {$i <= $last} {incr i} { |
---|
| 1163 | if {![catch {$menu entrycget $i -label} label]} { |
---|
| 1164 | if {[string equal $label $s]} { |
---|
| 1165 | return $i |
---|
| 1166 | } |
---|
| 1167 | } |
---|
| 1168 | } |
---|
| 1169 | return "" |
---|
| 1170 | } |
---|
| 1171 | |
---|
| 1172 | # ::tk::PostOverPoint -- |
---|
| 1173 | # This procedure posts a given menu such that a given entry in the |
---|
| 1174 | # menu is centered over a given point in the root window. It also |
---|
| 1175 | # activates the given entry. |
---|
| 1176 | # |
---|
| 1177 | # Arguments: |
---|
| 1178 | # menu - Menu to post. |
---|
| 1179 | # x, y - Root coordinates of point. |
---|
| 1180 | # entry - Index of entry within menu to center over (x,y). |
---|
| 1181 | # If omitted or specified as {}, then the menu's |
---|
| 1182 | # upper-left corner goes at (x,y). |
---|
| 1183 | |
---|
| 1184 | proc ::tk::PostOverPoint {menu x y {entry {}}} { |
---|
| 1185 | global tcl_platform |
---|
| 1186 | |
---|
| 1187 | if {[string compare $entry {}]} { |
---|
| 1188 | if {$entry == [$menu index last]} { |
---|
| 1189 | incr y [expr {-([$menu yposition $entry] \ |
---|
| 1190 | + [winfo reqheight $menu])/2}] |
---|
| 1191 | } else { |
---|
| 1192 | incr y [expr {-([$menu yposition $entry] \ |
---|
| 1193 | + [$menu yposition [expr {$entry+1}]])/2}] |
---|
| 1194 | } |
---|
| 1195 | incr x [expr {-[winfo reqwidth $menu]/2}] |
---|
| 1196 | } |
---|
| 1197 | if {$tcl_platform(platform) == "windows"} { |
---|
| 1198 | # We need to fix some problems with menu posting on Windows. |
---|
| 1199 | set yoffset [expr {[winfo screenheight $menu] \ |
---|
| 1200 | - $y - [winfo reqheight $menu]}] |
---|
| 1201 | if {$yoffset < 0} { |
---|
| 1202 | # The bottom of the menu is offscreen, so adjust upwards |
---|
| 1203 | incr y $yoffset |
---|
| 1204 | if {$y < 0} { set y 0 } |
---|
| 1205 | } |
---|
| 1206 | # If we're off the top of the screen (either because we were |
---|
| 1207 | # originally or because we just adjusted too far upwards), |
---|
| 1208 | # then make the menu popup on the top edge. |
---|
| 1209 | if {$y < 0} { |
---|
| 1210 | set y 0 |
---|
| 1211 | } |
---|
| 1212 | } |
---|
| 1213 | $menu post $x $y |
---|
| 1214 | if {$entry ne "" && [$menu entrycget $entry -state] ne "disabled"} { |
---|
| 1215 | $menu activate $entry |
---|
| 1216 | GenerateMenuSelect $menu |
---|
| 1217 | } |
---|
| 1218 | } |
---|
| 1219 | |
---|
| 1220 | # ::tk::SaveGrabInfo -- |
---|
| 1221 | # Sets the variables tk::Priv(oldGrab) and tk::Priv(grabStatus) to record |
---|
| 1222 | # the state of any existing grab on the w's display. |
---|
| 1223 | # |
---|
| 1224 | # Arguments: |
---|
| 1225 | # w - Name of a window; used to select the display |
---|
| 1226 | # whose grab information is to be recorded. |
---|
| 1227 | |
---|
| 1228 | proc tk::SaveGrabInfo w { |
---|
| 1229 | variable ::tk::Priv |
---|
| 1230 | set Priv(oldGrab) [grab current $w] |
---|
| 1231 | if {$Priv(oldGrab) ne ""} { |
---|
| 1232 | set Priv(grabStatus) [grab status $Priv(oldGrab)] |
---|
| 1233 | } |
---|
| 1234 | } |
---|
| 1235 | |
---|
| 1236 | # ::tk::RestoreOldGrab -- |
---|
| 1237 | # Restores the grab to what it was before TkSaveGrabInfo was called. |
---|
| 1238 | # |
---|
| 1239 | |
---|
| 1240 | proc ::tk::RestoreOldGrab {} { |
---|
| 1241 | variable ::tk::Priv |
---|
| 1242 | |
---|
| 1243 | if {$Priv(oldGrab) ne ""} { |
---|
| 1244 | # Be careful restoring the old grab, since it's window may not |
---|
| 1245 | # be visible anymore. |
---|
| 1246 | |
---|
| 1247 | catch { |
---|
| 1248 | if {[string equal $Priv(grabStatus) "global"]} { |
---|
| 1249 | grab set -global $Priv(oldGrab) |
---|
| 1250 | } else { |
---|
| 1251 | grab set $Priv(oldGrab) |
---|
| 1252 | } |
---|
| 1253 | } |
---|
| 1254 | set Priv(oldGrab) "" |
---|
| 1255 | } |
---|
| 1256 | } |
---|
| 1257 | |
---|
| 1258 | proc ::tk_menuSetFocus {menu} { |
---|
| 1259 | variable ::tk::Priv |
---|
| 1260 | if {![info exists Priv(focus)] || [string equal $Priv(focus) {}]} { |
---|
| 1261 | set Priv(focus) [focus] |
---|
| 1262 | } |
---|
| 1263 | focus $menu |
---|
| 1264 | } |
---|
| 1265 | |
---|
| 1266 | proc ::tk::GenerateMenuSelect {menu} { |
---|
| 1267 | variable ::tk::Priv |
---|
| 1268 | |
---|
| 1269 | if {[string equal $Priv(activeMenu) $menu] \ |
---|
| 1270 | && [string equal $Priv(activeItem) [$menu index active]]} { |
---|
| 1271 | return |
---|
| 1272 | } |
---|
| 1273 | |
---|
| 1274 | set Priv(activeMenu) $menu |
---|
| 1275 | set Priv(activeItem) [$menu index active] |
---|
| 1276 | event generate $menu <<MenuSelect>> |
---|
| 1277 | } |
---|
| 1278 | |
---|
| 1279 | # ::tk_popup -- |
---|
| 1280 | # This procedure pops up a menu and sets things up for traversing |
---|
| 1281 | # the menu and its submenus. |
---|
| 1282 | # |
---|
| 1283 | # Arguments: |
---|
| 1284 | # menu - Name of the menu to be popped up. |
---|
| 1285 | # x, y - Root coordinates at which to pop up the |
---|
| 1286 | # menu. |
---|
| 1287 | # entry - Index of a menu entry to center over (x,y). |
---|
| 1288 | # If omitted or specified as {}, then menu's |
---|
| 1289 | # upper-left corner goes at (x,y). |
---|
| 1290 | |
---|
| 1291 | proc ::tk_popup {menu x y {entry {}}} { |
---|
| 1292 | variable ::tk::Priv |
---|
| 1293 | global tcl_platform |
---|
| 1294 | if {$Priv(popup) ne "" || $Priv(postedMb) ne ""} { |
---|
| 1295 | tk::MenuUnpost {} |
---|
| 1296 | } |
---|
| 1297 | tk::PostOverPoint $menu $x $y $entry |
---|
| 1298 | if {[tk windowingsystem] eq "x11" && [winfo viewable $menu]} { |
---|
| 1299 | tk::SaveGrabInfo $menu |
---|
| 1300 | grab -global $menu |
---|
| 1301 | set Priv(popup) $menu |
---|
| 1302 | tk_menuSetFocus $menu |
---|
| 1303 | } |
---|
| 1304 | } |
---|