[37] | 1 | # entry.tcl -- |
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| 2 | # |
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| 3 | # This file defines the default bindings for Tk entry widgets and provides |
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| 4 | # procedures that help in implementing those bindings. |
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| 5 | # |
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| 6 | # RCS: @(#) $Id: entry.tcl,v 1.21 2003/01/23 23:30:11 drh Exp $ |
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| 7 | # |
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| 8 | # Copyright (c) 1992-1994 The Regents of the University of California. |
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| 9 | # Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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| 10 | # |
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| 11 | # See the file "license.terms" for information on usage and redistribution |
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| 12 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 13 | # |
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| 14 | |
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| 15 | #------------------------------------------------------------------------- |
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| 16 | # Elements of tk::Priv that are used in this file: |
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| 17 | # |
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| 18 | # afterId - If non-null, it means that auto-scanning is underway |
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| 19 | # and it gives the "after" id for the next auto-scan |
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| 20 | # command to be executed. |
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| 21 | # mouseMoved - Non-zero means the mouse has moved a significant |
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| 22 | # amount since the button went down (so, for example, |
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| 23 | # start dragging out a selection). |
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| 24 | # pressX - X-coordinate at which the mouse button was pressed. |
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| 25 | # selectMode - The style of selection currently underway: |
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| 26 | # char, word, or line. |
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| 27 | # x, y - Last known mouse coordinates for scanning |
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| 28 | # and auto-scanning. |
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| 29 | # data - Used for Cut and Copy |
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| 30 | #------------------------------------------------------------------------- |
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| 31 | |
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| 32 | #------------------------------------------------------------------------- |
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| 33 | # The code below creates the default class bindings for entries. |
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| 34 | #------------------------------------------------------------------------- |
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| 35 | bind Entry <<Cut>> { |
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| 36 | if {![catch {tk::EntryGetSelection %W} tk::Priv(data)]} { |
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| 37 | clipboard clear -displayof %W |
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| 38 | clipboard append -displayof %W $tk::Priv(data) |
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| 39 | %W delete sel.first sel.last |
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| 40 | unset tk::Priv(data) |
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| 41 | } |
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| 42 | } |
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| 43 | bind Entry <<Copy>> { |
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| 44 | if {![catch {tk::EntryGetSelection %W} tk::Priv(data)]} { |
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| 45 | clipboard clear -displayof %W |
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| 46 | clipboard append -displayof %W $tk::Priv(data) |
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| 47 | unset tk::Priv(data) |
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| 48 | } |
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| 49 | } |
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| 50 | bind Entry <<Paste>> { |
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| 51 | global tcl_platform |
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| 52 | catch { |
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| 53 | if {[string compare [tk windowingsystem] "x11"]} { |
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| 54 | catch { |
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| 55 | %W delete sel.first sel.last |
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| 56 | } |
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| 57 | } |
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| 58 | %W insert insert [::tk::GetSelection %W CLIPBOARD] |
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| 59 | tk::EntrySeeInsert %W |
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| 60 | } |
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| 61 | } |
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| 62 | bind Entry <<Clear>> { |
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| 63 | %W delete sel.first sel.last |
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| 64 | } |
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| 65 | bind Entry <<PasteSelection>> { |
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| 66 | if {$tk_strictMotif || ![info exists tk::Priv(mouseMoved)] |
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| 67 | || !$tk::Priv(mouseMoved)} { |
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| 68 | tk::EntryPaste %W %x |
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| 69 | } |
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| 70 | } |
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| 71 | |
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| 72 | # Standard Motif bindings: |
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| 73 | |
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| 74 | bind Entry <1> { |
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| 75 | tk::EntryButton1 %W %x |
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| 76 | %W selection clear |
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| 77 | } |
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| 78 | bind Entry <B1-Motion> { |
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| 79 | set tk::Priv(x) %x |
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| 80 | tk::EntryMouseSelect %W %x |
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| 81 | } |
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| 82 | bind Entry <Double-1> { |
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| 83 | set tk::Priv(selectMode) word |
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| 84 | tk::EntryMouseSelect %W %x |
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| 85 | catch {%W icursor sel.last} |
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| 86 | } |
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| 87 | bind Entry <Triple-1> { |
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| 88 | set tk::Priv(selectMode) line |
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| 89 | tk::EntryMouseSelect %W %x |
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| 90 | catch {%W icursor sel.last} |
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| 91 | } |
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| 92 | bind Entry <Shift-1> { |
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| 93 | set tk::Priv(selectMode) char |
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| 94 | %W selection adjust @%x |
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| 95 | } |
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| 96 | bind Entry <Double-Shift-1> { |
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| 97 | set tk::Priv(selectMode) word |
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| 98 | tk::EntryMouseSelect %W %x |
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| 99 | } |
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| 100 | bind Entry <Triple-Shift-1> { |
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| 101 | set tk::Priv(selectMode) line |
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| 102 | tk::EntryMouseSelect %W %x |
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| 103 | } |
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| 104 | bind Entry <B1-Leave> { |
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| 105 | set tk::Priv(x) %x |
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| 106 | tk::EntryAutoScan %W |
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| 107 | } |
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| 108 | bind Entry <B1-Enter> { |
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| 109 | tk::CancelRepeat |
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| 110 | } |
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| 111 | bind Entry <ButtonRelease-1> { |
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| 112 | tk::CancelRepeat |
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| 113 | } |
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| 114 | bind Entry <Control-1> { |
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| 115 | %W icursor @%x |
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| 116 | } |
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| 117 | |
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| 118 | bind Entry <Left> { |
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| 119 | tk::EntrySetCursor %W [expr {[%W index insert] - 1}] |
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| 120 | } |
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| 121 | bind Entry <Right> { |
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| 122 | tk::EntrySetCursor %W [expr {[%W index insert] + 1}] |
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| 123 | } |
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| 124 | bind Entry <Shift-Left> { |
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| 125 | tk::EntryKeySelect %W [expr {[%W index insert] - 1}] |
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| 126 | tk::EntrySeeInsert %W |
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| 127 | } |
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| 128 | bind Entry <Shift-Right> { |
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| 129 | tk::EntryKeySelect %W [expr {[%W index insert] + 1}] |
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| 130 | tk::EntrySeeInsert %W |
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| 131 | } |
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| 132 | bind Entry <Control-Left> { |
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| 133 | tk::EntrySetCursor %W [tk::EntryPreviousWord %W insert] |
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| 134 | } |
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| 135 | bind Entry <Control-Right> { |
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| 136 | tk::EntrySetCursor %W [tk::EntryNextWord %W insert] |
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| 137 | } |
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| 138 | bind Entry <Shift-Control-Left> { |
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| 139 | tk::EntryKeySelect %W [tk::EntryPreviousWord %W insert] |
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| 140 | tk::EntrySeeInsert %W |
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| 141 | } |
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| 142 | bind Entry <Shift-Control-Right> { |
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| 143 | tk::EntryKeySelect %W [tk::EntryNextWord %W insert] |
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| 144 | tk::EntrySeeInsert %W |
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| 145 | } |
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| 146 | bind Entry <Home> { |
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| 147 | tk::EntrySetCursor %W 0 |
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| 148 | } |
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| 149 | bind Entry <Shift-Home> { |
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| 150 | tk::EntryKeySelect %W 0 |
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| 151 | tk::EntrySeeInsert %W |
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| 152 | } |
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| 153 | bind Entry <End> { |
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| 154 | tk::EntrySetCursor %W end |
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| 155 | } |
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| 156 | bind Entry <Shift-End> { |
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| 157 | tk::EntryKeySelect %W end |
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| 158 | tk::EntrySeeInsert %W |
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| 159 | } |
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| 160 | |
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| 161 | bind Entry <Delete> { |
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| 162 | if {[%W selection present]} { |
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| 163 | %W delete sel.first sel.last |
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| 164 | } else { |
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| 165 | %W delete insert |
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| 166 | } |
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| 167 | } |
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| 168 | bind Entry <BackSpace> { |
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| 169 | tk::EntryBackspace %W |
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| 170 | } |
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| 171 | |
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| 172 | bind Entry <Control-space> { |
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| 173 | %W selection from insert |
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| 174 | } |
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| 175 | bind Entry <Select> { |
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| 176 | %W selection from insert |
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| 177 | } |
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| 178 | bind Entry <Control-Shift-space> { |
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| 179 | %W selection adjust insert |
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| 180 | } |
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| 181 | bind Entry <Shift-Select> { |
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| 182 | %W selection adjust insert |
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| 183 | } |
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| 184 | bind Entry <Control-slash> { |
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| 185 | %W selection range 0 end |
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| 186 | } |
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| 187 | bind Entry <Control-backslash> { |
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| 188 | %W selection clear |
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| 189 | } |
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| 190 | bind Entry <KeyPress> { |
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| 191 | tk::CancelRepeat |
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| 192 | tk::EntryInsert %W %A |
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| 193 | } |
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| 194 | |
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| 195 | # Ignore all Alt, Meta, and Control keypresses unless explicitly bound. |
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| 196 | # Otherwise, if a widget binding for one of these is defined, the |
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| 197 | # <KeyPress> class binding will also fire and insert the character, |
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| 198 | # which is wrong. Ditto for Escape, Return, and Tab. |
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| 199 | |
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| 200 | bind Entry <Alt-KeyPress> {# nothing} |
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| 201 | bind Entry <Meta-KeyPress> {# nothing} |
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| 202 | bind Entry <Control-KeyPress> {# nothing} |
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| 203 | bind Entry <Escape> {# nothing} |
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| 204 | bind Entry <Return> {# nothing} |
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| 205 | bind Entry <KP_Enter> {# nothing} |
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| 206 | bind Entry <Tab> {# nothing} |
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| 207 | if {[string equal [tk windowingsystem] "classic"] |
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| 208 | || [string equal [tk windowingsystem] "aqua"]} { |
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| 209 | bind Entry <Command-KeyPress> {# nothing} |
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| 210 | } |
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| 211 | |
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| 212 | # On Windows, paste is done using Shift-Insert. Shift-Insert already |
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| 213 | # generates the <<Paste>> event, so we don't need to do anything here. |
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| 214 | if {[string compare $tcl_platform(platform) "windows"]} { |
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| 215 | bind Entry <Insert> { |
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| 216 | catch {tk::EntryInsert %W [::tk::GetSelection %W PRIMARY]} |
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| 217 | } |
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| 218 | } |
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| 219 | |
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| 220 | # Additional emacs-like bindings: |
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| 221 | |
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| 222 | bind Entry <Control-a> { |
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| 223 | if {!$tk_strictMotif} { |
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| 224 | tk::EntrySetCursor %W 0 |
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| 225 | } |
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| 226 | } |
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| 227 | bind Entry <Control-b> { |
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| 228 | if {!$tk_strictMotif} { |
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| 229 | tk::EntrySetCursor %W [expr {[%W index insert] - 1}] |
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| 230 | } |
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| 231 | } |
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| 232 | bind Entry <Control-d> { |
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| 233 | if {!$tk_strictMotif} { |
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| 234 | %W delete insert |
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| 235 | } |
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| 236 | } |
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| 237 | bind Entry <Control-e> { |
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| 238 | if {!$tk_strictMotif} { |
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| 239 | tk::EntrySetCursor %W end |
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| 240 | } |
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| 241 | } |
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| 242 | bind Entry <Control-f> { |
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| 243 | if {!$tk_strictMotif} { |
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| 244 | tk::EntrySetCursor %W [expr {[%W index insert] + 1}] |
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| 245 | } |
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| 246 | } |
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| 247 | bind Entry <Control-h> { |
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| 248 | if {!$tk_strictMotif} { |
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| 249 | tk::EntryBackspace %W |
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| 250 | } |
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| 251 | } |
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| 252 | bind Entry <Control-k> { |
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| 253 | if {!$tk_strictMotif} { |
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| 254 | %W delete insert end |
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| 255 | } |
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| 256 | } |
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| 257 | bind Entry <Control-t> { |
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| 258 | if {!$tk_strictMotif} { |
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| 259 | tk::EntryTranspose %W |
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| 260 | } |
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| 261 | } |
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| 262 | bind Entry <Meta-b> { |
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| 263 | if {!$tk_strictMotif} { |
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| 264 | tk::EntrySetCursor %W [tk::EntryPreviousWord %W insert] |
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| 265 | } |
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| 266 | } |
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| 267 | bind Entry <Meta-d> { |
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| 268 | if {!$tk_strictMotif} { |
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| 269 | %W delete insert [tk::EntryNextWord %W insert] |
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| 270 | } |
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| 271 | } |
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| 272 | bind Entry <Meta-f> { |
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| 273 | if {!$tk_strictMotif} { |
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| 274 | tk::EntrySetCursor %W [tk::EntryNextWord %W insert] |
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| 275 | } |
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| 276 | } |
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| 277 | bind Entry <Meta-BackSpace> { |
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| 278 | if {!$tk_strictMotif} { |
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| 279 | %W delete [tk::EntryPreviousWord %W insert] insert |
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| 280 | } |
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| 281 | } |
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| 282 | bind Entry <Meta-Delete> { |
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| 283 | if {!$tk_strictMotif} { |
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| 284 | %W delete [tk::EntryPreviousWord %W insert] insert |
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| 285 | } |
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| 286 | } |
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| 287 | |
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| 288 | # A few additional bindings of my own. |
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| 289 | |
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| 290 | bind Entry <2> { |
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| 291 | if {!$tk_strictMotif} { |
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| 292 | ::tk::EntryScanMark %W %x |
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| 293 | } |
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| 294 | } |
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| 295 | bind Entry <B2-Motion> { |
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| 296 | if {!$tk_strictMotif} { |
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| 297 | ::tk::EntryScanDrag %W %x |
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| 298 | } |
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| 299 | } |
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| 300 | |
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| 301 | # ::tk::EntryClosestGap -- |
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| 302 | # Given x and y coordinates, this procedure finds the closest boundary |
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| 303 | # between characters to the given coordinates and returns the index |
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| 304 | # of the character just after the boundary. |
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| 305 | # |
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| 306 | # Arguments: |
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| 307 | # w - The entry window. |
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| 308 | # x - X-coordinate within the window. |
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| 309 | |
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| 310 | proc ::tk::EntryClosestGap {w x} { |
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| 311 | set pos [$w index @$x] |
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| 312 | set bbox [$w bbox $pos] |
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| 313 | if {($x - [lindex $bbox 0]) < ([lindex $bbox 2]/2)} { |
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| 314 | return $pos |
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| 315 | } |
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| 316 | incr pos |
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| 317 | } |
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| 318 | |
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| 319 | # ::tk::EntryButton1 -- |
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| 320 | # This procedure is invoked to handle button-1 presses in entry |
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| 321 | # widgets. It moves the insertion cursor, sets the selection anchor, |
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| 322 | # and claims the input focus. |
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| 323 | # |
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| 324 | # Arguments: |
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| 325 | # w - The entry window in which the button was pressed. |
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| 326 | # x - The x-coordinate of the button press. |
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| 327 | |
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| 328 | proc ::tk::EntryButton1 {w x} { |
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| 329 | variable ::tk::Priv |
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| 330 | |
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| 331 | set Priv(selectMode) char |
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| 332 | set Priv(mouseMoved) 0 |
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| 333 | set Priv(pressX) $x |
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| 334 | $w icursor [EntryClosestGap $w $x] |
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| 335 | $w selection from insert |
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| 336 | if {[string compare "disabled" [$w cget -state]]} {focus $w} |
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| 337 | } |
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| 338 | |
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| 339 | # ::tk::EntryMouseSelect -- |
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| 340 | # This procedure is invoked when dragging out a selection with |
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| 341 | # the mouse. Depending on the selection mode (character, word, |
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| 342 | # line) it selects in different-sized units. This procedure |
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| 343 | # ignores mouse motions initially until the mouse has moved from |
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| 344 | # one character to another or until there have been multiple clicks. |
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| 345 | # |
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| 346 | # Arguments: |
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| 347 | # w - The entry window in which the button was pressed. |
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| 348 | # x - The x-coordinate of the mouse. |
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| 349 | |
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| 350 | proc ::tk::EntryMouseSelect {w x} { |
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| 351 | variable ::tk::Priv |
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| 352 | |
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| 353 | set cur [EntryClosestGap $w $x] |
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| 354 | set anchor [$w index anchor] |
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| 355 | if {($cur != $anchor) || (abs($Priv(pressX) - $x) >= 3)} { |
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| 356 | set Priv(mouseMoved) 1 |
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| 357 | } |
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| 358 | switch $Priv(selectMode) { |
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| 359 | char { |
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| 360 | if {$Priv(mouseMoved)} { |
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| 361 | if {$cur < $anchor} { |
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| 362 | $w selection range $cur $anchor |
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| 363 | } elseif {$cur > $anchor} { |
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| 364 | $w selection range $anchor $cur |
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| 365 | } else { |
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| 366 | $w selection clear |
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| 367 | } |
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| 368 | } |
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| 369 | } |
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| 370 | word { |
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| 371 | if {$cur < [$w index anchor]} { |
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| 372 | set before [tcl_wordBreakBefore [$w get] $cur] |
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| 373 | set after [tcl_wordBreakAfter [$w get] [expr {$anchor-1}]] |
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| 374 | } else { |
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| 375 | set before [tcl_wordBreakBefore [$w get] $anchor] |
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| 376 | set after [tcl_wordBreakAfter [$w get] [expr {$cur - 1}]] |
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| 377 | } |
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| 378 | if {$before < 0} { |
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| 379 | set before 0 |
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| 380 | } |
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| 381 | if {$after < 0} { |
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| 382 | set after end |
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| 383 | } |
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| 384 | $w selection range $before $after |
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| 385 | } |
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| 386 | line { |
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| 387 | $w selection range 0 end |
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| 388 | } |
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| 389 | } |
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| 390 | if {$Priv(mouseMoved)} { |
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| 391 | $w icursor $cur |
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| 392 | } |
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| 393 | update idletasks |
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| 394 | } |
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| 395 | |
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| 396 | # ::tk::EntryPaste -- |
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| 397 | # This procedure sets the insertion cursor to the current mouse position, |
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| 398 | # pastes the selection there, and sets the focus to the window. |
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| 399 | # |
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| 400 | # Arguments: |
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| 401 | # w - The entry window. |
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| 402 | # x - X position of the mouse. |
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| 403 | |
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| 404 | proc ::tk::EntryPaste {w x} { |
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| 405 | $w icursor [EntryClosestGap $w $x] |
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| 406 | catch {$w insert insert [::tk::GetSelection $w PRIMARY]} |
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| 407 | if {[string compare "disabled" [$w cget -state]]} {focus $w} |
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| 408 | } |
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| 409 | |
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| 410 | # ::tk::EntryAutoScan -- |
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| 411 | # This procedure is invoked when the mouse leaves an entry window |
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| 412 | # with button 1 down. It scrolls the window left or right, |
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| 413 | # depending on where the mouse is, and reschedules itself as an |
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| 414 | # "after" command so that the window continues to scroll until the |
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| 415 | # mouse moves back into the window or the mouse button is released. |
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| 416 | # |
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| 417 | # Arguments: |
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| 418 | # w - The entry window. |
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| 419 | |
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| 420 | proc ::tk::EntryAutoScan {w} { |
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| 421 | variable ::tk::Priv |
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| 422 | set x $Priv(x) |
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| 423 | if {![winfo exists $w]} return |
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| 424 | if {$x >= [winfo width $w]} { |
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| 425 | $w xview scroll 2 units |
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| 426 | EntryMouseSelect $w $x |
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| 427 | } elseif {$x < 0} { |
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| 428 | $w xview scroll -2 units |
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| 429 | EntryMouseSelect $w $x |
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| 430 | } |
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| 431 | set Priv(afterId) [after 50 [list tk::EntryAutoScan $w]] |
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| 432 | } |
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| 433 | |
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| 434 | # ::tk::EntryKeySelect -- |
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| 435 | # This procedure is invoked when stroking out selections using the |
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| 436 | # keyboard. It moves the cursor to a new position, then extends |
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| 437 | # the selection to that position. |
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| 438 | # |
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| 439 | # Arguments: |
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| 440 | # w - The entry window. |
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| 441 | # new - A new position for the insertion cursor (the cursor hasn't |
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| 442 | # actually been moved to this position yet). |
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| 443 | |
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| 444 | proc ::tk::EntryKeySelect {w new} { |
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| 445 | if {![$w selection present]} { |
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| 446 | $w selection from insert |
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| 447 | $w selection to $new |
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| 448 | } else { |
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| 449 | $w selection adjust $new |
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| 450 | } |
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| 451 | $w icursor $new |
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| 452 | } |
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| 453 | |
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| 454 | # ::tk::EntryInsert -- |
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| 455 | # Insert a string into an entry at the point of the insertion cursor. |
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| 456 | # If there is a selection in the entry, and it covers the point of the |
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| 457 | # insertion cursor, then delete the selection before inserting. |
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| 458 | # |
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| 459 | # Arguments: |
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| 460 | # w - The entry window in which to insert the string |
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| 461 | # s - The string to insert (usually just a single character) |
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| 462 | |
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| 463 | proc ::tk::EntryInsert {w s} { |
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| 464 | if {[string equal $s ""]} { |
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| 465 | return |
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| 466 | } |
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| 467 | catch { |
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| 468 | set insert [$w index insert] |
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| 469 | if {([$w index sel.first] <= $insert) |
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| 470 | && ([$w index sel.last] >= $insert)} { |
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| 471 | $w delete sel.first sel.last |
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| 472 | } |
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| 473 | } |
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| 474 | $w insert insert $s |
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| 475 | EntrySeeInsert $w |
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| 476 | } |
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| 477 | |
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| 478 | # ::tk::EntryBackspace -- |
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| 479 | # Backspace over the character just before the insertion cursor. |
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| 480 | # If backspacing would move the cursor off the left edge of the |
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| 481 | # window, reposition the cursor at about the middle of the window. |
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| 482 | # |
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| 483 | # Arguments: |
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| 484 | # w - The entry window in which to backspace. |
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| 485 | |
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| 486 | proc ::tk::EntryBackspace w { |
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| 487 | if {[$w selection present]} { |
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| 488 | $w delete sel.first sel.last |
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| 489 | } else { |
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| 490 | set x [expr {[$w index insert] - 1}] |
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| 491 | if {$x >= 0} {$w delete $x} |
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| 492 | if {[$w index @0] >= [$w index insert]} { |
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| 493 | set range [$w xview] |
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| 494 | set left [lindex $range 0] |
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| 495 | set right [lindex $range 1] |
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| 496 | $w xview moveto [expr {$left - ($right - $left)/2.0}] |
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| 497 | } |
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| 498 | } |
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| 499 | } |
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| 500 | |
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| 501 | # ::tk::EntrySeeInsert -- |
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| 502 | # Make sure that the insertion cursor is visible in the entry window. |
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| 503 | # If not, adjust the view so that it is. |
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| 504 | # |
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| 505 | # Arguments: |
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| 506 | # w - The entry window. |
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| 507 | |
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| 508 | proc ::tk::EntrySeeInsert w { |
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| 509 | set c [$w index insert] |
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| 510 | if {($c < [$w index @0]) || ($c > [$w index @[winfo width $w]])} { |
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| 511 | $w xview $c |
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| 512 | } |
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| 513 | } |
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| 514 | |
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| 515 | # ::tk::EntrySetCursor - |
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| 516 | # Move the insertion cursor to a given position in an entry. Also |
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| 517 | # clears the selection, if there is one in the entry, and makes sure |
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| 518 | # that the insertion cursor is visible. |
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| 519 | # |
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| 520 | # Arguments: |
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| 521 | # w - The entry window. |
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| 522 | # pos - The desired new position for the cursor in the window. |
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| 523 | |
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| 524 | proc ::tk::EntrySetCursor {w pos} { |
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| 525 | $w icursor $pos |
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| 526 | $w selection clear |
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| 527 | EntrySeeInsert $w |
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| 528 | } |
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| 529 | |
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| 530 | # ::tk::EntryTranspose - |
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| 531 | # This procedure implements the "transpose" function for entry widgets. |
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| 532 | # It tranposes the characters on either side of the insertion cursor, |
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| 533 | # unless the cursor is at the end of the line. In this case it |
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| 534 | # transposes the two characters to the left of the cursor. In either |
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| 535 | # case, the cursor ends up to the right of the transposed characters. |
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| 536 | # |
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| 537 | # Arguments: |
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| 538 | # w - The entry window. |
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| 539 | |
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| 540 | proc ::tk::EntryTranspose w { |
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| 541 | set i [$w index insert] |
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| 542 | if {$i < [$w index end]} { |
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| 543 | incr i |
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| 544 | } |
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| 545 | set first [expr {$i-2}] |
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| 546 | if {$first < 0} { |
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| 547 | return |
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| 548 | } |
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| 549 | set data [$w get] |
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| 550 | set new [string index $data [expr {$i-1}]][string index $data $first] |
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| 551 | $w delete $first $i |
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| 552 | $w insert insert $new |
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| 553 | EntrySeeInsert $w |
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| 554 | } |
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| 555 | |
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| 556 | # ::tk::EntryNextWord -- |
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| 557 | # Returns the index of the next word position after a given position in the |
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| 558 | # entry. The next word is platform dependent and may be either the next |
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| 559 | # end-of-word position or the next start-of-word position after the next |
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| 560 | # end-of-word position. |
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| 561 | # |
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| 562 | # Arguments: |
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| 563 | # w - The entry window in which the cursor is to move. |
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| 564 | # start - Position at which to start search. |
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| 565 | |
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| 566 | if {[string equal $tcl_platform(platform) "windows"]} { |
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| 567 | proc ::tk::EntryNextWord {w start} { |
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| 568 | set pos [tcl_endOfWord [$w get] [$w index $start]] |
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| 569 | if {$pos >= 0} { |
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| 570 | set pos [tcl_startOfNextWord [$w get] $pos] |
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| 571 | } |
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| 572 | if {$pos < 0} { |
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| 573 | return end |
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| 574 | } |
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| 575 | return $pos |
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| 576 | } |
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| 577 | } else { |
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| 578 | proc ::tk::EntryNextWord {w start} { |
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| 579 | set pos [tcl_endOfWord [$w get] [$w index $start]] |
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| 580 | if {$pos < 0} { |
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| 581 | return end |
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| 582 | } |
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| 583 | return $pos |
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| 584 | } |
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| 585 | } |
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| 586 | |
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| 587 | # ::tk::EntryPreviousWord -- |
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| 588 | # |
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| 589 | # Returns the index of the previous word position before a given |
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| 590 | # position in the entry. |
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| 591 | # |
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| 592 | # Arguments: |
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| 593 | # w - The entry window in which the cursor is to move. |
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| 594 | # start - Position at which to start search. |
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| 595 | |
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| 596 | proc ::tk::EntryPreviousWord {w start} { |
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| 597 | set pos [tcl_startOfPreviousWord [$w get] [$w index $start]] |
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| 598 | if {$pos < 0} { |
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| 599 | return 0 |
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| 600 | } |
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| 601 | return $pos |
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| 602 | } |
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| 603 | |
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| 604 | # ::tk::EntryScanMark -- |
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| 605 | # |
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| 606 | # Marks the start of a possible scan drag operation |
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| 607 | # |
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| 608 | # Arguments: |
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| 609 | # w - The entry window from which the text to get |
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| 610 | # x - x location on screen |
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| 611 | |
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| 612 | proc ::tk::EntryScanMark {w x} { |
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| 613 | $w scan mark $x |
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| 614 | set ::tk::Priv(x) $x |
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| 615 | set ::tk::Priv(y) 0 ; # not used |
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| 616 | set ::tk::Priv(mouseMoved) 0 |
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| 617 | } |
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| 618 | |
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| 619 | # ::tk::EntryScanDrag -- |
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| 620 | # |
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| 621 | # Marks the start of a possible scan drag operation |
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| 622 | # |
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| 623 | # Arguments: |
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| 624 | # w - The entry window from which the text to get |
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| 625 | # x - x location on screen |
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| 626 | |
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| 627 | proc ::tk::EntryScanDrag {w x} { |
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| 628 | # Make sure these exist, as some weird situations can trigger the |
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| 629 | # motion binding without the initial press. [Bug #220269] |
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| 630 | if {![info exists ::tk::Priv(x)]} { set ::tk::Priv(x) $x } |
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| 631 | # allow for a delta |
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| 632 | if {abs($x-$::tk::Priv(x)) > 2} { |
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| 633 | set ::tk::Priv(mouseMoved) 1 |
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| 634 | } |
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| 635 | $w scan dragto $x |
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| 636 | } |
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| 637 | |
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| 638 | # ::tk::EntryGetSelection -- |
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| 639 | # |
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| 640 | # Returns the selected text of the entry with respect to the -show option. |
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| 641 | # |
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| 642 | # Arguments: |
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| 643 | # w - The entry window from which the text to get |
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| 644 | |
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| 645 | proc ::tk::EntryGetSelection {w} { |
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| 646 | set entryString [string range [$w get] [$w index sel.first] \ |
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| 647 | [expr {[$w index sel.last] - 1}]] |
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| 648 | if {[string compare [$w cget -show] ""]} { |
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| 649 | return [string repeat [string index [$w cget -show] 0] \ |
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| 650 | [string length $entryString]] |
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| 651 | } |
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| 652 | return $entryString |
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| 653 | } |
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