[37] | 1 | # text.tcl -- |
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| 2 | # |
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| 3 | # This file defines the default bindings for Tk text widgets and provides |
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| 4 | # procedures that help in implementing the bindings. |
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| 5 | # |
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| 6 | # RCS: @(#) $Id: text.tcl,v 1.24.2.2 2004/02/17 07:17:17 das 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 | # Copyright (c) 1998 by Scriptics Corporation. |
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| 11 | # |
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| 12 | # See the file "license.terms" for information on usage and redistribution |
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| 13 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 14 | # |
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| 15 | |
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| 16 | #------------------------------------------------------------------------- |
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| 17 | # Elements of ::tk::Priv that are used in this file: |
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| 18 | # |
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| 19 | # afterId - If non-null, it means that auto-scanning is underway |
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| 20 | # and it gives the "after" id for the next auto-scan |
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| 21 | # command to be executed. |
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| 22 | # char - Character position on the line; kept in order |
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| 23 | # to allow moving up or down past short lines while |
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| 24 | # still remembering the desired position. |
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| 25 | # mouseMoved - Non-zero means the mouse has moved a significant |
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| 26 | # amount since the button went down (so, for example, |
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| 27 | # start dragging out a selection). |
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| 28 | # prevPos - Used when moving up or down lines via the keyboard. |
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| 29 | # Keeps track of the previous insert position, so |
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| 30 | # we can distinguish a series of ups and downs, all |
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| 31 | # in a row, from a new up or down. |
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| 32 | # selectMode - The style of selection currently underway: |
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| 33 | # char, word, or line. |
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| 34 | # x, y - Last known mouse coordinates for scanning |
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| 35 | # and auto-scanning. |
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| 36 | #------------------------------------------------------------------------- |
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| 37 | |
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| 38 | #------------------------------------------------------------------------- |
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| 39 | # The code below creates the default class bindings for text widgets. |
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| 40 | #------------------------------------------------------------------------- |
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| 41 | |
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| 42 | # Standard Motif bindings: |
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| 43 | |
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| 44 | bind Text <1> { |
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| 45 | tk::TextButton1 %W %x %y |
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| 46 | %W tag remove sel 0.0 end |
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| 47 | } |
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| 48 | bind Text <B1-Motion> { |
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| 49 | set tk::Priv(x) %x |
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| 50 | set tk::Priv(y) %y |
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| 51 | tk::TextSelectTo %W %x %y |
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| 52 | } |
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| 53 | bind Text <Double-1> { |
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| 54 | set tk::Priv(selectMode) word |
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| 55 | tk::TextSelectTo %W %x %y |
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| 56 | catch {%W mark set insert sel.last} |
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| 57 | } |
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| 58 | bind Text <Triple-1> { |
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| 59 | set tk::Priv(selectMode) line |
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| 60 | tk::TextSelectTo %W %x %y |
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| 61 | catch {%W mark set insert sel.last} |
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| 62 | } |
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| 63 | bind Text <Shift-1> { |
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| 64 | tk::TextResetAnchor %W @%x,%y |
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| 65 | set tk::Priv(selectMode) char |
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| 66 | tk::TextSelectTo %W %x %y |
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| 67 | } |
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| 68 | bind Text <Double-Shift-1> { |
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| 69 | set tk::Priv(selectMode) word |
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| 70 | tk::TextSelectTo %W %x %y 1 |
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| 71 | } |
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| 72 | bind Text <Triple-Shift-1> { |
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| 73 | set tk::Priv(selectMode) line |
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| 74 | tk::TextSelectTo %W %x %y |
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| 75 | } |
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| 76 | bind Text <B1-Leave> { |
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| 77 | set tk::Priv(x) %x |
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| 78 | set tk::Priv(y) %y |
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| 79 | tk::TextAutoScan %W |
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| 80 | } |
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| 81 | bind Text <B1-Enter> { |
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| 82 | tk::CancelRepeat |
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| 83 | } |
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| 84 | bind Text <ButtonRelease-1> { |
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| 85 | tk::CancelRepeat |
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| 86 | } |
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| 87 | bind Text <Control-1> { |
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| 88 | %W mark set insert @%x,%y |
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| 89 | } |
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| 90 | bind Text <Left> { |
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| 91 | tk::TextSetCursor %W insert-1c |
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| 92 | } |
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| 93 | bind Text <Right> { |
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| 94 | tk::TextSetCursor %W insert+1c |
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| 95 | } |
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| 96 | bind Text <Up> { |
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| 97 | tk::TextSetCursor %W [tk::TextUpDownLine %W -1] |
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| 98 | } |
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| 99 | bind Text <Down> { |
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| 100 | tk::TextSetCursor %W [tk::TextUpDownLine %W 1] |
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| 101 | } |
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| 102 | bind Text <Shift-Left> { |
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| 103 | tk::TextKeySelect %W [%W index {insert - 1c}] |
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| 104 | } |
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| 105 | bind Text <Shift-Right> { |
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| 106 | tk::TextKeySelect %W [%W index {insert + 1c}] |
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| 107 | } |
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| 108 | bind Text <Shift-Up> { |
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| 109 | tk::TextKeySelect %W [tk::TextUpDownLine %W -1] |
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| 110 | } |
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| 111 | bind Text <Shift-Down> { |
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| 112 | tk::TextKeySelect %W [tk::TextUpDownLine %W 1] |
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| 113 | } |
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| 114 | bind Text <Control-Left> { |
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| 115 | tk::TextSetCursor %W [tk::TextPrevPos %W insert tcl_startOfPreviousWord] |
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| 116 | } |
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| 117 | bind Text <Control-Right> { |
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| 118 | tk::TextSetCursor %W [tk::TextNextWord %W insert] |
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| 119 | } |
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| 120 | bind Text <Control-Up> { |
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| 121 | tk::TextSetCursor %W [tk::TextPrevPara %W insert] |
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| 122 | } |
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| 123 | bind Text <Control-Down> { |
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| 124 | tk::TextSetCursor %W [tk::TextNextPara %W insert] |
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| 125 | } |
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| 126 | bind Text <Shift-Control-Left> { |
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| 127 | tk::TextKeySelect %W [tk::TextPrevPos %W insert tcl_startOfPreviousWord] |
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| 128 | } |
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| 129 | bind Text <Shift-Control-Right> { |
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| 130 | tk::TextKeySelect %W [tk::TextNextWord %W insert] |
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| 131 | } |
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| 132 | bind Text <Shift-Control-Up> { |
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| 133 | tk::TextKeySelect %W [tk::TextPrevPara %W insert] |
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| 134 | } |
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| 135 | bind Text <Shift-Control-Down> { |
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| 136 | tk::TextKeySelect %W [tk::TextNextPara %W insert] |
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| 137 | } |
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| 138 | bind Text <Prior> { |
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| 139 | tk::TextSetCursor %W [tk::TextScrollPages %W -1] |
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| 140 | } |
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| 141 | bind Text <Shift-Prior> { |
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| 142 | tk::TextKeySelect %W [tk::TextScrollPages %W -1] |
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| 143 | } |
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| 144 | bind Text <Next> { |
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| 145 | tk::TextSetCursor %W [tk::TextScrollPages %W 1] |
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| 146 | } |
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| 147 | bind Text <Shift-Next> { |
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| 148 | tk::TextKeySelect %W [tk::TextScrollPages %W 1] |
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| 149 | } |
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| 150 | bind Text <Control-Prior> { |
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| 151 | %W xview scroll -1 page |
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| 152 | } |
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| 153 | bind Text <Control-Next> { |
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| 154 | %W xview scroll 1 page |
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| 155 | } |
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| 156 | |
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| 157 | bind Text <Home> { |
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| 158 | tk::TextSetCursor %W {insert linestart} |
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| 159 | } |
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| 160 | bind Text <Shift-Home> { |
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| 161 | tk::TextKeySelect %W {insert linestart} |
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| 162 | } |
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| 163 | bind Text <End> { |
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| 164 | tk::TextSetCursor %W {insert lineend} |
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| 165 | } |
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| 166 | bind Text <Shift-End> { |
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| 167 | tk::TextKeySelect %W {insert lineend} |
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| 168 | } |
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| 169 | bind Text <Control-Home> { |
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| 170 | tk::TextSetCursor %W 1.0 |
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| 171 | } |
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| 172 | bind Text <Control-Shift-Home> { |
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| 173 | tk::TextKeySelect %W 1.0 |
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| 174 | } |
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| 175 | bind Text <Control-End> { |
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| 176 | tk::TextSetCursor %W {end - 1 char} |
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| 177 | } |
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| 178 | bind Text <Control-Shift-End> { |
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| 179 | tk::TextKeySelect %W {end - 1 char} |
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| 180 | } |
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| 181 | |
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| 182 | bind Text <Tab> { |
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| 183 | if { [string equal [%W cget -state] "normal"] } { |
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| 184 | tk::TextInsert %W \t |
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| 185 | focus %W |
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| 186 | break |
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| 187 | } |
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| 188 | } |
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| 189 | bind Text <Shift-Tab> { |
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| 190 | # Needed only to keep <Tab> binding from triggering; doesn't |
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| 191 | # have to actually do anything. |
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| 192 | break |
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| 193 | } |
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| 194 | bind Text <Control-Tab> { |
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| 195 | focus [tk_focusNext %W] |
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| 196 | } |
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| 197 | bind Text <Control-Shift-Tab> { |
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| 198 | focus [tk_focusPrev %W] |
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| 199 | } |
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| 200 | bind Text <Control-i> { |
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| 201 | tk::TextInsert %W \t |
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| 202 | } |
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| 203 | bind Text <Return> { |
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| 204 | tk::TextInsert %W \n |
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| 205 | if {[%W cget -autoseparators]} {%W edit separator} |
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| 206 | } |
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| 207 | bind Text <Delete> { |
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| 208 | if {[string compare [%W tag nextrange sel 1.0 end] ""]} { |
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| 209 | %W delete sel.first sel.last |
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| 210 | } else { |
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| 211 | %W delete insert |
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| 212 | %W see insert |
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| 213 | } |
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| 214 | } |
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| 215 | bind Text <BackSpace> { |
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| 216 | if {[string compare [%W tag nextrange sel 1.0 end] ""]} { |
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| 217 | %W delete sel.first sel.last |
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| 218 | } elseif {[%W compare insert != 1.0]} { |
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| 219 | %W delete insert-1c |
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| 220 | %W see insert |
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| 221 | } |
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| 222 | } |
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| 223 | |
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| 224 | bind Text <Control-space> { |
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| 225 | %W mark set anchor insert |
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| 226 | } |
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| 227 | bind Text <Select> { |
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| 228 | %W mark set anchor insert |
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| 229 | } |
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| 230 | bind Text <Control-Shift-space> { |
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| 231 | set tk::Priv(selectMode) char |
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| 232 | tk::TextKeyExtend %W insert |
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| 233 | } |
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| 234 | bind Text <Shift-Select> { |
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| 235 | set tk::Priv(selectMode) char |
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| 236 | tk::TextKeyExtend %W insert |
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| 237 | } |
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| 238 | bind Text <Control-slash> { |
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| 239 | %W tag add sel 1.0 end |
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| 240 | } |
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| 241 | bind Text <Control-backslash> { |
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| 242 | %W tag remove sel 1.0 end |
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| 243 | } |
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| 244 | bind Text <<Cut>> { |
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| 245 | tk_textCut %W |
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| 246 | } |
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| 247 | bind Text <<Copy>> { |
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| 248 | tk_textCopy %W |
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| 249 | } |
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| 250 | bind Text <<Paste>> { |
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| 251 | tk_textPaste %W |
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| 252 | } |
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| 253 | bind Text <<Clear>> { |
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| 254 | catch {%W delete sel.first sel.last} |
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| 255 | } |
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| 256 | bind Text <<PasteSelection>> { |
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| 257 | if {$tk_strictMotif || ![info exists tk::Priv(mouseMoved)] |
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| 258 | || !$tk::Priv(mouseMoved)} { |
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| 259 | tk::TextPasteSelection %W %x %y |
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| 260 | } |
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| 261 | } |
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| 262 | bind Text <Insert> { |
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| 263 | catch {tk::TextInsert %W [::tk::GetSelection %W PRIMARY]} |
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| 264 | } |
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| 265 | bind Text <KeyPress> { |
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| 266 | tk::TextInsert %W %A |
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| 267 | } |
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| 268 | |
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| 269 | # Ignore all Alt, Meta, and Control keypresses unless explicitly bound. |
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| 270 | # Otherwise, if a widget binding for one of these is defined, the |
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| 271 | # <KeyPress> class binding will also fire and insert the character, |
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| 272 | # which is wrong. Ditto for <Escape>. |
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| 273 | |
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| 274 | bind Text <Alt-KeyPress> {# nothing } |
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| 275 | bind Text <Meta-KeyPress> {# nothing} |
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| 276 | bind Text <Control-KeyPress> {# nothing} |
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| 277 | bind Text <Escape> {# nothing} |
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| 278 | bind Text <KP_Enter> {# nothing} |
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| 279 | if {[string equal [tk windowingsystem] "classic"] |
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| 280 | || [string equal [tk windowingsystem] "aqua"]} { |
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| 281 | bind Text <Command-KeyPress> {# nothing} |
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| 282 | } |
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| 283 | |
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| 284 | # Additional emacs-like bindings: |
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| 285 | |
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| 286 | bind Text <Control-a> { |
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| 287 | if {!$tk_strictMotif} { |
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| 288 | tk::TextSetCursor %W {insert linestart} |
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| 289 | } |
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| 290 | } |
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| 291 | bind Text <Control-b> { |
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| 292 | if {!$tk_strictMotif} { |
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| 293 | tk::TextSetCursor %W insert-1c |
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| 294 | } |
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| 295 | } |
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| 296 | bind Text <Control-d> { |
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| 297 | if {!$tk_strictMotif} { |
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| 298 | %W delete insert |
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| 299 | } |
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| 300 | } |
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| 301 | bind Text <Control-e> { |
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| 302 | if {!$tk_strictMotif} { |
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| 303 | tk::TextSetCursor %W {insert lineend} |
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| 304 | } |
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| 305 | } |
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| 306 | bind Text <Control-f> { |
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| 307 | if {!$tk_strictMotif} { |
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| 308 | tk::TextSetCursor %W insert+1c |
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| 309 | } |
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| 310 | } |
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| 311 | bind Text <Control-k> { |
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| 312 | if {!$tk_strictMotif} { |
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| 313 | if {[%W compare insert == {insert lineend}]} { |
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| 314 | %W delete insert |
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| 315 | } else { |
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| 316 | %W delete insert {insert lineend} |
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| 317 | } |
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| 318 | } |
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| 319 | } |
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| 320 | bind Text <Control-n> { |
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| 321 | if {!$tk_strictMotif} { |
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| 322 | tk::TextSetCursor %W [tk::TextUpDownLine %W 1] |
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| 323 | } |
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| 324 | } |
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| 325 | bind Text <Control-o> { |
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| 326 | if {!$tk_strictMotif} { |
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| 327 | %W insert insert \n |
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| 328 | %W mark set insert insert-1c |
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| 329 | } |
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| 330 | } |
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| 331 | bind Text <Control-p> { |
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| 332 | if {!$tk_strictMotif} { |
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| 333 | tk::TextSetCursor %W [tk::TextUpDownLine %W -1] |
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| 334 | } |
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| 335 | } |
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| 336 | bind Text <Control-t> { |
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| 337 | if {!$tk_strictMotif} { |
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| 338 | tk::TextTranspose %W |
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| 339 | } |
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| 340 | } |
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| 341 | |
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| 342 | bind Text <<Undo>> { |
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| 343 | catch { %W edit undo } |
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| 344 | } |
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| 345 | |
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| 346 | bind Text <<Redo>> { |
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| 347 | catch { %W edit redo } |
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| 348 | } |
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| 349 | |
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| 350 | if {[string compare $tcl_platform(platform) "windows"]} { |
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| 351 | bind Text <Control-v> { |
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| 352 | if {!$tk_strictMotif} { |
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| 353 | tk::TextScrollPages %W 1 |
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| 354 | } |
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| 355 | } |
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| 356 | } |
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| 357 | |
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| 358 | bind Text <Meta-b> { |
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| 359 | if {!$tk_strictMotif} { |
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| 360 | tk::TextSetCursor %W [tk::TextPrevPos %W insert tcl_startOfPreviousWord] |
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| 361 | } |
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| 362 | } |
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| 363 | bind Text <Meta-d> { |
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| 364 | if {!$tk_strictMotif} { |
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| 365 | %W delete insert [tk::TextNextWord %W insert] |
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| 366 | } |
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| 367 | } |
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| 368 | bind Text <Meta-f> { |
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| 369 | if {!$tk_strictMotif} { |
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| 370 | tk::TextSetCursor %W [tk::TextNextWord %W insert] |
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| 371 | } |
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| 372 | } |
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| 373 | bind Text <Meta-less> { |
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| 374 | if {!$tk_strictMotif} { |
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| 375 | tk::TextSetCursor %W 1.0 |
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| 376 | } |
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| 377 | } |
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| 378 | bind Text <Meta-greater> { |
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| 379 | if {!$tk_strictMotif} { |
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| 380 | tk::TextSetCursor %W end-1c |
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| 381 | } |
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| 382 | } |
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| 383 | bind Text <Meta-BackSpace> { |
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| 384 | if {!$tk_strictMotif} { |
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| 385 | %W delete [tk::TextPrevPos %W insert tcl_startOfPreviousWord] insert |
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| 386 | } |
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| 387 | } |
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| 388 | bind Text <Meta-Delete> { |
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| 389 | if {!$tk_strictMotif} { |
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| 390 | %W delete [tk::TextPrevPos %W insert tcl_startOfPreviousWord] insert |
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| 391 | } |
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| 392 | } |
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| 393 | |
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| 394 | # Macintosh only bindings: |
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| 395 | |
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| 396 | # if text black & highlight black -> text white, other text the same |
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| 397 | if {[string equal [tk windowingsystem] "classic"] |
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| 398 | || [string equal [tk windowingsystem] "aqua"]} { |
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| 399 | bind Text <FocusIn> { |
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| 400 | %W tag configure sel -borderwidth 0 |
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| 401 | %W configure -selectbackground systemHighlight -selectforeground systemHighlightText |
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| 402 | } |
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| 403 | bind Text <FocusOut> { |
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| 404 | %W tag configure sel -borderwidth 1 |
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| 405 | %W configure -selectbackground white -selectforeground black |
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| 406 | } |
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| 407 | bind Text <Option-Left> { |
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| 408 | tk::TextSetCursor %W [tk::TextPrevPos %W insert tcl_startOfPreviousWord] |
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| 409 | } |
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| 410 | bind Text <Option-Right> { |
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| 411 | tk::TextSetCursor %W [tk::TextNextWord %W insert] |
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| 412 | } |
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| 413 | bind Text <Option-Up> { |
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| 414 | tk::TextSetCursor %W [tk::TextPrevPara %W insert] |
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| 415 | } |
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| 416 | bind Text <Option-Down> { |
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| 417 | tk::TextSetCursor %W [tk::TextNextPara %W insert] |
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| 418 | } |
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| 419 | bind Text <Shift-Option-Left> { |
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| 420 | tk::TextKeySelect %W [tk::TextPrevPos %W insert tcl_startOfPreviousWord] |
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| 421 | } |
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| 422 | bind Text <Shift-Option-Right> { |
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| 423 | tk::TextKeySelect %W [tk::TextNextWord %W insert] |
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| 424 | } |
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| 425 | bind Text <Shift-Option-Up> { |
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| 426 | tk::TextKeySelect %W [tk::TextPrevPara %W insert] |
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| 427 | } |
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| 428 | bind Text <Shift-Option-Down> { |
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| 429 | tk::TextKeySelect %W [tk::TextNextPara %W insert] |
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| 430 | } |
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| 431 | |
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| 432 | # End of Mac only bindings |
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| 433 | } |
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| 434 | |
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| 435 | # A few additional bindings of my own. |
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| 436 | |
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| 437 | bind Text <Control-h> { |
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| 438 | if {!$tk_strictMotif} { |
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| 439 | if {[%W compare insert != 1.0]} { |
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| 440 | %W delete insert-1c |
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| 441 | %W see insert |
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| 442 | } |
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| 443 | } |
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| 444 | } |
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| 445 | bind Text <2> { |
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| 446 | if {!$tk_strictMotif} { |
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| 447 | tk::TextScanMark %W %x %y |
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| 448 | } |
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| 449 | } |
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| 450 | bind Text <B2-Motion> { |
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| 451 | if {!$tk_strictMotif} { |
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| 452 | tk::TextScanDrag %W %x %y |
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| 453 | } |
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| 454 | } |
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| 455 | set ::tk::Priv(prevPos) {} |
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| 456 | |
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| 457 | # The MouseWheel will typically only fire on Windows. However, |
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| 458 | # someone could use the "event generate" command to produce one |
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| 459 | # on other platforms. |
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| 460 | |
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| 461 | if {[string equal [tk windowingsystem] "classic"] |
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| 462 | || [string equal [tk windowingsystem] "aqua"]} { |
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| 463 | bind Text <MouseWheel> { |
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| 464 | %W yview scroll [expr {- (%D)}] units |
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| 465 | } |
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| 466 | bind Text <Option-MouseWheel> { |
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| 467 | %W yview scroll [expr {-10 * (%D)}] units |
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| 468 | } |
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| 469 | bind Text <Shift-MouseWheel> { |
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| 470 | %W xview scroll [expr {- (%D)}] units |
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| 471 | } |
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| 472 | bind Text <Shift-Option-MouseWheel> { |
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| 473 | %W xview scroll [expr {-10 * (%D)}] units |
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| 474 | } |
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| 475 | } else { |
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| 476 | bind Text <MouseWheel> { |
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| 477 | %W yview scroll [expr {- (%D / 120) * 4}] units |
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| 478 | } |
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| 479 | } |
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| 480 | |
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| 481 | if {[string equal "x11" [tk windowingsystem]]} { |
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| 482 | # Support for mousewheels on Linux/Unix commonly comes through mapping |
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| 483 | # the wheel to the extended buttons. If you have a mousewheel, find |
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| 484 | # Linux configuration info at: |
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| 485 | # http://www.inria.fr/koala/colas/mouse-wheel-scroll/ |
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| 486 | bind Text <4> { |
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| 487 | if {!$tk_strictMotif} { |
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| 488 | %W yview scroll -5 units |
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| 489 | } |
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| 490 | } |
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| 491 | bind Text <5> { |
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| 492 | if {!$tk_strictMotif} { |
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| 493 | %W yview scroll 5 units |
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| 494 | } |
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| 495 | } |
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| 496 | } |
---|
| 497 | |
---|
| 498 | # ::tk::TextClosestGap -- |
---|
| 499 | # Given x and y coordinates, this procedure finds the closest boundary |
---|
| 500 | # between characters to the given coordinates and returns the index |
---|
| 501 | # of the character just after the boundary. |
---|
| 502 | # |
---|
| 503 | # Arguments: |
---|
| 504 | # w - The text window. |
---|
| 505 | # x - X-coordinate within the window. |
---|
| 506 | # y - Y-coordinate within the window. |
---|
| 507 | |
---|
| 508 | proc ::tk::TextClosestGap {w x y} { |
---|
| 509 | set pos [$w index @$x,$y] |
---|
| 510 | set bbox [$w bbox $pos] |
---|
| 511 | if {[string equal $bbox ""]} { |
---|
| 512 | return $pos |
---|
| 513 | } |
---|
| 514 | if {($x - [lindex $bbox 0]) < ([lindex $bbox 2]/2)} { |
---|
| 515 | return $pos |
---|
| 516 | } |
---|
| 517 | $w index "$pos + 1 char" |
---|
| 518 | } |
---|
| 519 | |
---|
| 520 | # ::tk::TextButton1 -- |
---|
| 521 | # This procedure is invoked to handle button-1 presses in text |
---|
| 522 | # widgets. It moves the insertion cursor, sets the selection anchor, |
---|
| 523 | # and claims the input focus. |
---|
| 524 | # |
---|
| 525 | # Arguments: |
---|
| 526 | # w - The text window in which the button was pressed. |
---|
| 527 | # x - The x-coordinate of the button press. |
---|
| 528 | # y - The x-coordinate of the button press. |
---|
| 529 | |
---|
| 530 | proc ::tk::TextButton1 {w x y} { |
---|
| 531 | variable ::tk::Priv |
---|
| 532 | |
---|
| 533 | set Priv(selectMode) char |
---|
| 534 | set Priv(mouseMoved) 0 |
---|
| 535 | set Priv(pressX) $x |
---|
| 536 | $w mark set insert [TextClosestGap $w $x $y] |
---|
| 537 | $w mark set anchor insert |
---|
| 538 | # Allow focus in any case on Windows, because that will let the |
---|
| 539 | # selection be displayed even for state disabled text widgets. |
---|
| 540 | if {[string equal $::tcl_platform(platform) "windows"] \ |
---|
| 541 | || [string equal [$w cget -state] "normal"]} {focus $w} |
---|
| 542 | if {[$w cget -autoseparators]} {$w edit separator} |
---|
| 543 | } |
---|
| 544 | |
---|
| 545 | # ::tk::TextSelectTo -- |
---|
| 546 | # This procedure is invoked to extend the selection, typically when |
---|
| 547 | # dragging it with the mouse. Depending on the selection mode (character, |
---|
| 548 | # word, line) it selects in different-sized units. This procedure |
---|
| 549 | # ignores mouse motions initially until the mouse has moved from |
---|
| 550 | # one character to another or until there have been multiple clicks. |
---|
| 551 | # |
---|
| 552 | # Arguments: |
---|
| 553 | # w - The text window in which the button was pressed. |
---|
| 554 | # x - Mouse x position. |
---|
| 555 | # y - Mouse y position. |
---|
| 556 | |
---|
| 557 | proc ::tk::TextSelectTo {w x y {extend 0}} { |
---|
| 558 | global tcl_platform |
---|
| 559 | variable ::tk::Priv |
---|
| 560 | |
---|
| 561 | set cur [TextClosestGap $w $x $y] |
---|
| 562 | if {[catch {$w index anchor}]} { |
---|
| 563 | $w mark set anchor $cur |
---|
| 564 | } |
---|
| 565 | set anchor [$w index anchor] |
---|
| 566 | if {[$w compare $cur != $anchor] || (abs($Priv(pressX) - $x) >= 3)} { |
---|
| 567 | set Priv(mouseMoved) 1 |
---|
| 568 | } |
---|
| 569 | switch $Priv(selectMode) { |
---|
| 570 | char { |
---|
| 571 | if {[$w compare $cur < anchor]} { |
---|
| 572 | set first $cur |
---|
| 573 | set last anchor |
---|
| 574 | } else { |
---|
| 575 | set first anchor |
---|
| 576 | set last $cur |
---|
| 577 | } |
---|
| 578 | } |
---|
| 579 | word { |
---|
| 580 | if {[$w compare $cur < anchor]} { |
---|
| 581 | set first [TextPrevPos $w "$cur + 1c" tcl_wordBreakBefore] |
---|
| 582 | if { !$extend } { |
---|
| 583 | set last [TextNextPos $w "anchor" tcl_wordBreakAfter] |
---|
| 584 | } else { |
---|
| 585 | set last anchor |
---|
| 586 | } |
---|
| 587 | } else { |
---|
| 588 | set last [TextNextPos $w "$cur - 1c" tcl_wordBreakAfter] |
---|
| 589 | if { !$extend } { |
---|
| 590 | set first [TextPrevPos $w anchor tcl_wordBreakBefore] |
---|
| 591 | } else { |
---|
| 592 | set first anchor |
---|
| 593 | } |
---|
| 594 | } |
---|
| 595 | } |
---|
| 596 | line { |
---|
| 597 | if {[$w compare $cur < anchor]} { |
---|
| 598 | set first [$w index "$cur linestart"] |
---|
| 599 | set last [$w index "anchor - 1c lineend + 1c"] |
---|
| 600 | } else { |
---|
| 601 | set first [$w index "anchor linestart"] |
---|
| 602 | set last [$w index "$cur lineend + 1c"] |
---|
| 603 | } |
---|
| 604 | } |
---|
| 605 | } |
---|
| 606 | if {$Priv(mouseMoved) || [string compare $Priv(selectMode) "char"]} { |
---|
| 607 | $w tag remove sel 0.0 end |
---|
| 608 | $w mark set insert $cur |
---|
| 609 | $w tag add sel $first $last |
---|
| 610 | $w tag remove sel $last end |
---|
| 611 | update idletasks |
---|
| 612 | } |
---|
| 613 | } |
---|
| 614 | |
---|
| 615 | # ::tk::TextKeyExtend -- |
---|
| 616 | # This procedure handles extending the selection from the keyboard, |
---|
| 617 | # where the point to extend to is really the boundary between two |
---|
| 618 | # characters rather than a particular character. |
---|
| 619 | # |
---|
| 620 | # Arguments: |
---|
| 621 | # w - The text window. |
---|
| 622 | # index - The point to which the selection is to be extended. |
---|
| 623 | |
---|
| 624 | proc ::tk::TextKeyExtend {w index} { |
---|
| 625 | |
---|
| 626 | set cur [$w index $index] |
---|
| 627 | if {[catch {$w index anchor}]} { |
---|
| 628 | $w mark set anchor $cur |
---|
| 629 | } |
---|
| 630 | set anchor [$w index anchor] |
---|
| 631 | if {[$w compare $cur < anchor]} { |
---|
| 632 | set first $cur |
---|
| 633 | set last anchor |
---|
| 634 | } else { |
---|
| 635 | set first anchor |
---|
| 636 | set last $cur |
---|
| 637 | } |
---|
| 638 | $w tag remove sel 0.0 $first |
---|
| 639 | $w tag add sel $first $last |
---|
| 640 | $w tag remove sel $last end |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | # ::tk::TextPasteSelection -- |
---|
| 644 | # This procedure sets the insertion cursor to the mouse position, |
---|
| 645 | # inserts the selection, and sets the focus to the window. |
---|
| 646 | # |
---|
| 647 | # Arguments: |
---|
| 648 | # w - The text window. |
---|
| 649 | # x, y - Position of the mouse. |
---|
| 650 | |
---|
| 651 | proc ::tk::TextPasteSelection {w x y} { |
---|
| 652 | $w mark set insert [TextClosestGap $w $x $y] |
---|
| 653 | if {![catch {::tk::GetSelection $w PRIMARY} sel]} { |
---|
| 654 | set oldSeparator [$w cget -autoseparators] |
---|
| 655 | if {$oldSeparator} { |
---|
| 656 | $w configure -autoseparators 0 |
---|
| 657 | $w edit separator |
---|
| 658 | } |
---|
| 659 | $w insert insert $sel |
---|
| 660 | if {$oldSeparator} { |
---|
| 661 | $w edit separator |
---|
| 662 | $w configure -autoseparators 1 |
---|
| 663 | } |
---|
| 664 | } |
---|
| 665 | if {[string equal [$w cget -state] "normal"]} {focus $w} |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | # ::tk::TextAutoScan -- |
---|
| 669 | # This procedure is invoked when the mouse leaves a text window |
---|
| 670 | # with button 1 down. It scrolls the window up, down, left, or right, |
---|
| 671 | # depending on where the mouse is (this information was saved in |
---|
| 672 | # ::tk::Priv(x) and ::tk::Priv(y)), and reschedules itself as an "after" |
---|
| 673 | # command so that the window continues to scroll until the mouse |
---|
| 674 | # moves back into the window or the mouse button is released. |
---|
| 675 | # |
---|
| 676 | # Arguments: |
---|
| 677 | # w - The text window. |
---|
| 678 | |
---|
| 679 | proc ::tk::TextAutoScan {w} { |
---|
| 680 | variable ::tk::Priv |
---|
| 681 | if {![winfo exists $w]} return |
---|
| 682 | if {$Priv(y) >= [winfo height $w]} { |
---|
| 683 | $w yview scroll 2 units |
---|
| 684 | } elseif {$Priv(y) < 0} { |
---|
| 685 | $w yview scroll -2 units |
---|
| 686 | } elseif {$Priv(x) >= [winfo width $w]} { |
---|
| 687 | $w xview scroll 2 units |
---|
| 688 | } elseif {$Priv(x) < 0} { |
---|
| 689 | $w xview scroll -2 units |
---|
| 690 | } else { |
---|
| 691 | return |
---|
| 692 | } |
---|
| 693 | TextSelectTo $w $Priv(x) $Priv(y) |
---|
| 694 | set Priv(afterId) [after 50 [list tk::TextAutoScan $w]] |
---|
| 695 | } |
---|
| 696 | |
---|
| 697 | # ::tk::TextSetCursor |
---|
| 698 | # Move the insertion cursor to a given position in a text. Also |
---|
| 699 | # clears the selection, if there is one in the text, and makes sure |
---|
| 700 | # that the insertion cursor is visible. Also, don't let the insertion |
---|
| 701 | # cursor appear on the dummy last line of the text. |
---|
| 702 | # |
---|
| 703 | # Arguments: |
---|
| 704 | # w - The text window. |
---|
| 705 | # pos - The desired new position for the cursor in the window. |
---|
| 706 | |
---|
| 707 | proc ::tk::TextSetCursor {w pos} { |
---|
| 708 | |
---|
| 709 | if {[$w compare $pos == end]} { |
---|
| 710 | set pos {end - 1 chars} |
---|
| 711 | } |
---|
| 712 | $w mark set insert $pos |
---|
| 713 | $w tag remove sel 1.0 end |
---|
| 714 | $w see insert |
---|
| 715 | if {[$w cget -autoseparators]} {$w edit separator} |
---|
| 716 | } |
---|
| 717 | |
---|
| 718 | # ::tk::TextKeySelect |
---|
| 719 | # This procedure is invoked when stroking out selections using the |
---|
| 720 | # keyboard. It moves the cursor to a new position, then extends |
---|
| 721 | # the selection to that position. |
---|
| 722 | # |
---|
| 723 | # Arguments: |
---|
| 724 | # w - The text window. |
---|
| 725 | # new - A new position for the insertion cursor (the cursor hasn't |
---|
| 726 | # actually been moved to this position yet). |
---|
| 727 | |
---|
| 728 | proc ::tk::TextKeySelect {w new} { |
---|
| 729 | |
---|
| 730 | if {[string equal [$w tag nextrange sel 1.0 end] ""]} { |
---|
| 731 | if {[$w compare $new < insert]} { |
---|
| 732 | $w tag add sel $new insert |
---|
| 733 | } else { |
---|
| 734 | $w tag add sel insert $new |
---|
| 735 | } |
---|
| 736 | $w mark set anchor insert |
---|
| 737 | } else { |
---|
| 738 | if {[$w compare $new < anchor]} { |
---|
| 739 | set first $new |
---|
| 740 | set last anchor |
---|
| 741 | } else { |
---|
| 742 | set first anchor |
---|
| 743 | set last $new |
---|
| 744 | } |
---|
| 745 | $w tag remove sel 1.0 $first |
---|
| 746 | $w tag add sel $first $last |
---|
| 747 | $w tag remove sel $last end |
---|
| 748 | } |
---|
| 749 | $w mark set insert $new |
---|
| 750 | $w see insert |
---|
| 751 | update idletasks |
---|
| 752 | } |
---|
| 753 | |
---|
| 754 | # ::tk::TextResetAnchor -- |
---|
| 755 | # Set the selection anchor to whichever end is farthest from the |
---|
| 756 | # index argument. One special trick: if the selection has two or |
---|
| 757 | # fewer characters, just leave the anchor where it is. In this |
---|
| 758 | # case it doesn't matter which point gets chosen for the anchor, |
---|
| 759 | # and for the things like Shift-Left and Shift-Right this produces |
---|
| 760 | # better behavior when the cursor moves back and forth across the |
---|
| 761 | # anchor. |
---|
| 762 | # |
---|
| 763 | # Arguments: |
---|
| 764 | # w - The text widget. |
---|
| 765 | # index - Position at which mouse button was pressed, which determines |
---|
| 766 | # which end of selection should be used as anchor point. |
---|
| 767 | |
---|
| 768 | proc ::tk::TextResetAnchor {w index} { |
---|
| 769 | |
---|
| 770 | if {[string equal [$w tag ranges sel] ""]} { |
---|
| 771 | # Don't move the anchor if there is no selection now; this makes |
---|
| 772 | # the widget behave "correctly" when the user clicks once, then |
---|
| 773 | # shift-clicks somewhere -- ie, the area between the two clicks will be |
---|
| 774 | # selected. [Bug: 5929]. |
---|
| 775 | return |
---|
| 776 | } |
---|
| 777 | set a [$w index $index] |
---|
| 778 | set b [$w index sel.first] |
---|
| 779 | set c [$w index sel.last] |
---|
| 780 | if {[$w compare $a < $b]} { |
---|
| 781 | $w mark set anchor sel.last |
---|
| 782 | return |
---|
| 783 | } |
---|
| 784 | if {[$w compare $a > $c]} { |
---|
| 785 | $w mark set anchor sel.first |
---|
| 786 | return |
---|
| 787 | } |
---|
| 788 | scan $a "%d.%d" lineA chA |
---|
| 789 | scan $b "%d.%d" lineB chB |
---|
| 790 | scan $c "%d.%d" lineC chC |
---|
| 791 | if {$lineB < $lineC+2} { |
---|
| 792 | set total [string length [$w get $b $c]] |
---|
| 793 | if {$total <= 2} { |
---|
| 794 | return |
---|
| 795 | } |
---|
| 796 | if {[string length [$w get $b $a]] < ($total/2)} { |
---|
| 797 | $w mark set anchor sel.last |
---|
| 798 | } else { |
---|
| 799 | $w mark set anchor sel.first |
---|
| 800 | } |
---|
| 801 | return |
---|
| 802 | } |
---|
| 803 | if {($lineA-$lineB) < ($lineC-$lineA)} { |
---|
| 804 | $w mark set anchor sel.last |
---|
| 805 | } else { |
---|
| 806 | $w mark set anchor sel.first |
---|
| 807 | } |
---|
| 808 | } |
---|
| 809 | |
---|
| 810 | # ::tk::TextInsert -- |
---|
| 811 | # Insert a string into a text at the point of the insertion cursor. |
---|
| 812 | # If there is a selection in the text, and it covers the point of the |
---|
| 813 | # insertion cursor, then delete the selection before inserting. |
---|
| 814 | # |
---|
| 815 | # Arguments: |
---|
| 816 | # w - The text window in which to insert the string |
---|
| 817 | # s - The string to insert (usually just a single character) |
---|
| 818 | |
---|
| 819 | proc ::tk::TextInsert {w s} { |
---|
| 820 | if {[string equal $s ""] || [string equal [$w cget -state] "disabled"]} { |
---|
| 821 | return |
---|
| 822 | } |
---|
| 823 | set compound 0 |
---|
| 824 | catch { |
---|
| 825 | if {[$w compare sel.first <= insert] \ |
---|
| 826 | && [$w compare sel.last >= insert]} { |
---|
| 827 | set oldSeparator [$w cget -autoseparators] |
---|
| 828 | if { $oldSeparator } { |
---|
| 829 | $w configure -autoseparators 0 |
---|
| 830 | $w edit separator |
---|
| 831 | set compound 1 |
---|
| 832 | } |
---|
| 833 | $w delete sel.first sel.last |
---|
| 834 | } |
---|
| 835 | } |
---|
| 836 | $w insert insert $s |
---|
| 837 | $w see insert |
---|
| 838 | if { $compound && $oldSeparator } { |
---|
| 839 | $w edit separator |
---|
| 840 | $w configure -autoseparators 1 |
---|
| 841 | } |
---|
| 842 | } |
---|
| 843 | |
---|
| 844 | # ::tk::TextUpDownLine -- |
---|
| 845 | # Returns the index of the character one line above or below the |
---|
| 846 | # insertion cursor. There are two tricky things here. First, |
---|
| 847 | # we want to maintain the original column across repeated operations, |
---|
| 848 | # even though some lines that will get passed through don't have |
---|
| 849 | # enough characters to cover the original column. Second, don't |
---|
| 850 | # try to scroll past the beginning or end of the text. |
---|
| 851 | # |
---|
| 852 | # Arguments: |
---|
| 853 | # w - The text window in which the cursor is to move. |
---|
| 854 | # n - The number of lines to move: -1 for up one line, |
---|
| 855 | # +1 for down one line. |
---|
| 856 | |
---|
| 857 | proc ::tk::TextUpDownLine {w n} { |
---|
| 858 | variable ::tk::Priv |
---|
| 859 | |
---|
| 860 | set i [$w index insert] |
---|
| 861 | scan $i "%d.%d" line char |
---|
| 862 | if {[string compare $Priv(prevPos) $i]} { |
---|
| 863 | set Priv(char) $char |
---|
| 864 | } |
---|
| 865 | set new [$w index [expr {$line + $n}].$Priv(char)] |
---|
| 866 | if {[$w compare $new == end] || [$w compare $new == "insert linestart"]} { |
---|
| 867 | set new $i |
---|
| 868 | } |
---|
| 869 | set Priv(prevPos) $new |
---|
| 870 | return $new |
---|
| 871 | } |
---|
| 872 | |
---|
| 873 | # ::tk::TextPrevPara -- |
---|
| 874 | # Returns the index of the beginning of the paragraph just before a given |
---|
| 875 | # position in the text (the beginning of a paragraph is the first non-blank |
---|
| 876 | # character after a blank line). |
---|
| 877 | # |
---|
| 878 | # Arguments: |
---|
| 879 | # w - The text window in which the cursor is to move. |
---|
| 880 | # pos - Position at which to start search. |
---|
| 881 | |
---|
| 882 | proc ::tk::TextPrevPara {w pos} { |
---|
| 883 | set pos [$w index "$pos linestart"] |
---|
| 884 | while {1} { |
---|
| 885 | if {([string equal [$w get "$pos - 1 line"] "\n"] \ |
---|
| 886 | && [string compare [$w get $pos] "\n"]) \ |
---|
| 887 | || [string equal $pos "1.0"]} { |
---|
| 888 | if {[regexp -indices {^[ ]+(.)} [$w get $pos "$pos lineend"] \ |
---|
| 889 | dummy index]} { |
---|
| 890 | set pos [$w index "$pos + [lindex $index 0] chars"] |
---|
| 891 | } |
---|
| 892 | if {[$w compare $pos != insert] || [string equal $pos 1.0]} { |
---|
| 893 | return $pos |
---|
| 894 | } |
---|
| 895 | } |
---|
| 896 | set pos [$w index "$pos - 1 line"] |
---|
| 897 | } |
---|
| 898 | } |
---|
| 899 | |
---|
| 900 | # ::tk::TextNextPara -- |
---|
| 901 | # Returns the index of the beginning of the paragraph just after a given |
---|
| 902 | # position in the text (the beginning of a paragraph is the first non-blank |
---|
| 903 | # character after a blank line). |
---|
| 904 | # |
---|
| 905 | # Arguments: |
---|
| 906 | # w - The text window in which the cursor is to move. |
---|
| 907 | # start - Position at which to start search. |
---|
| 908 | |
---|
| 909 | proc ::tk::TextNextPara {w start} { |
---|
| 910 | set pos [$w index "$start linestart + 1 line"] |
---|
| 911 | while {[string compare [$w get $pos] "\n"]} { |
---|
| 912 | if {[$w compare $pos == end]} { |
---|
| 913 | return [$w index "end - 1c"] |
---|
| 914 | } |
---|
| 915 | set pos [$w index "$pos + 1 line"] |
---|
| 916 | } |
---|
| 917 | while {[string equal [$w get $pos] "\n"]} { |
---|
| 918 | set pos [$w index "$pos + 1 line"] |
---|
| 919 | if {[$w compare $pos == end]} { |
---|
| 920 | return [$w index "end - 1c"] |
---|
| 921 | } |
---|
| 922 | } |
---|
| 923 | if {[regexp -indices {^[ ]+(.)} [$w get $pos "$pos lineend"] \ |
---|
| 924 | dummy index]} { |
---|
| 925 | return [$w index "$pos + [lindex $index 0] chars"] |
---|
| 926 | } |
---|
| 927 | return $pos |
---|
| 928 | } |
---|
| 929 | |
---|
| 930 | # ::tk::TextScrollPages -- |
---|
| 931 | # This is a utility procedure used in bindings for moving up and down |
---|
| 932 | # pages and possibly extending the selection along the way. It scrolls |
---|
| 933 | # the view in the widget by the number of pages, and it returns the |
---|
| 934 | # index of the character that is at the same position in the new view |
---|
| 935 | # as the insertion cursor used to be in the old view. |
---|
| 936 | # |
---|
| 937 | # Arguments: |
---|
| 938 | # w - The text window in which the cursor is to move. |
---|
| 939 | # count - Number of pages forward to scroll; may be negative |
---|
| 940 | # to scroll backwards. |
---|
| 941 | |
---|
| 942 | proc ::tk::TextScrollPages {w count} { |
---|
| 943 | set bbox [$w bbox insert] |
---|
| 944 | $w yview scroll $count pages |
---|
| 945 | if {[string equal $bbox ""]} { |
---|
| 946 | return [$w index @[expr {[winfo height $w]/2}],0] |
---|
| 947 | } |
---|
| 948 | return [$w index @[lindex $bbox 0],[lindex $bbox 1]] |
---|
| 949 | } |
---|
| 950 | |
---|
| 951 | # ::tk::TextTranspose -- |
---|
| 952 | # This procedure implements the "transpose" function for text widgets. |
---|
| 953 | # It tranposes the characters on either side of the insertion cursor, |
---|
| 954 | # unless the cursor is at the end of the line. In this case it |
---|
| 955 | # transposes the two characters to the left of the cursor. In either |
---|
| 956 | # case, the cursor ends up to the right of the transposed characters. |
---|
| 957 | # |
---|
| 958 | # Arguments: |
---|
| 959 | # w - Text window in which to transpose. |
---|
| 960 | |
---|
| 961 | proc ::tk::TextTranspose w { |
---|
| 962 | set pos insert |
---|
| 963 | if {[$w compare $pos != "$pos lineend"]} { |
---|
| 964 | set pos [$w index "$pos + 1 char"] |
---|
| 965 | } |
---|
| 966 | set new [$w get "$pos - 1 char"][$w get "$pos - 2 char"] |
---|
| 967 | if {[$w compare "$pos - 1 char" == 1.0]} { |
---|
| 968 | return |
---|
| 969 | } |
---|
| 970 | $w delete "$pos - 2 char" $pos |
---|
| 971 | $w insert insert $new |
---|
| 972 | $w see insert |
---|
| 973 | } |
---|
| 974 | |
---|
| 975 | # ::tk_textCopy -- |
---|
| 976 | # This procedure copies the selection from a text widget into the |
---|
| 977 | # clipboard. |
---|
| 978 | # |
---|
| 979 | # Arguments: |
---|
| 980 | # w - Name of a text widget. |
---|
| 981 | |
---|
| 982 | proc ::tk_textCopy w { |
---|
| 983 | if {![catch {set data [$w get sel.first sel.last]}]} { |
---|
| 984 | clipboard clear -displayof $w |
---|
| 985 | clipboard append -displayof $w $data |
---|
| 986 | } |
---|
| 987 | } |
---|
| 988 | |
---|
| 989 | # ::tk_textCut -- |
---|
| 990 | # This procedure copies the selection from a text widget into the |
---|
| 991 | # clipboard, then deletes the selection (if it exists in the given |
---|
| 992 | # widget). |
---|
| 993 | # |
---|
| 994 | # Arguments: |
---|
| 995 | # w - Name of a text widget. |
---|
| 996 | |
---|
| 997 | proc ::tk_textCut w { |
---|
| 998 | if {![catch {set data [$w get sel.first sel.last]}]} { |
---|
| 999 | clipboard clear -displayof $w |
---|
| 1000 | clipboard append -displayof $w $data |
---|
| 1001 | $w delete sel.first sel.last |
---|
| 1002 | } |
---|
| 1003 | } |
---|
| 1004 | |
---|
| 1005 | # ::tk_textPaste -- |
---|
| 1006 | # This procedure pastes the contents of the clipboard to the insertion |
---|
| 1007 | # point in a text widget. |
---|
| 1008 | # |
---|
| 1009 | # Arguments: |
---|
| 1010 | # w - Name of a text widget. |
---|
| 1011 | |
---|
| 1012 | proc ::tk_textPaste w { |
---|
| 1013 | global tcl_platform |
---|
| 1014 | if {![catch {::tk::GetSelection $w CLIPBOARD} sel]} { |
---|
| 1015 | set oldSeparator [$w cget -autoseparators] |
---|
| 1016 | if { $oldSeparator } { |
---|
| 1017 | $w configure -autoseparators 0 |
---|
| 1018 | $w edit separator |
---|
| 1019 | } |
---|
| 1020 | if {[string compare [tk windowingsystem] "x11"]} { |
---|
| 1021 | catch { $w delete sel.first sel.last } |
---|
| 1022 | } |
---|
| 1023 | $w insert insert $sel |
---|
| 1024 | if { $oldSeparator } { |
---|
| 1025 | $w edit separator |
---|
| 1026 | $w configure -autoseparators 1 |
---|
| 1027 | } |
---|
| 1028 | } |
---|
| 1029 | } |
---|
| 1030 | |
---|
| 1031 | # ::tk::TextNextWord -- |
---|
| 1032 | # Returns the index of the next word position after a given position in the |
---|
| 1033 | # text. The next word is platform dependent and may be either the next |
---|
| 1034 | # end-of-word position or the next start-of-word position after the next |
---|
| 1035 | # end-of-word position. |
---|
| 1036 | # |
---|
| 1037 | # Arguments: |
---|
| 1038 | # w - The text window in which the cursor is to move. |
---|
| 1039 | # start - Position at which to start search. |
---|
| 1040 | |
---|
| 1041 | if {[string equal $tcl_platform(platform) "windows"]} { |
---|
| 1042 | proc ::tk::TextNextWord {w start} { |
---|
| 1043 | TextNextPos $w [TextNextPos $w $start tcl_endOfWord] \ |
---|
| 1044 | tcl_startOfNextWord |
---|
| 1045 | } |
---|
| 1046 | } else { |
---|
| 1047 | proc ::tk::TextNextWord {w start} { |
---|
| 1048 | TextNextPos $w $start tcl_endOfWord |
---|
| 1049 | } |
---|
| 1050 | } |
---|
| 1051 | |
---|
| 1052 | # ::tk::TextNextPos -- |
---|
| 1053 | # Returns the index of the next position after the given starting |
---|
| 1054 | # position in the text as computed by a specified function. |
---|
| 1055 | # |
---|
| 1056 | # Arguments: |
---|
| 1057 | # w - The text window in which the cursor is to move. |
---|
| 1058 | # start - Position at which to start search. |
---|
| 1059 | # op - Function to use to find next position. |
---|
| 1060 | |
---|
| 1061 | proc ::tk::TextNextPos {w start op} { |
---|
| 1062 | set text "" |
---|
| 1063 | set cur $start |
---|
| 1064 | while {[$w compare $cur < end]} { |
---|
| 1065 | set text $text[$w get $cur "$cur lineend + 1c"] |
---|
| 1066 | set pos [$op $text 0] |
---|
| 1067 | if {$pos >= 0} { |
---|
| 1068 | ## Adjust for embedded windows and images |
---|
| 1069 | ## dump gives us 3 items per window/image |
---|
| 1070 | set dump [$w dump -image -window $start "$start + $pos c"] |
---|
| 1071 | if {[llength $dump]} { |
---|
| 1072 | set pos [expr {$pos + ([llength $dump]/3)}] |
---|
| 1073 | } |
---|
| 1074 | return [$w index "$start + $pos c"] |
---|
| 1075 | } |
---|
| 1076 | set cur [$w index "$cur lineend +1c"] |
---|
| 1077 | } |
---|
| 1078 | return end |
---|
| 1079 | } |
---|
| 1080 | |
---|
| 1081 | # ::tk::TextPrevPos -- |
---|
| 1082 | # Returns the index of the previous position before the given starting |
---|
| 1083 | # position in the text as computed by a specified function. |
---|
| 1084 | # |
---|
| 1085 | # Arguments: |
---|
| 1086 | # w - The text window in which the cursor is to move. |
---|
| 1087 | # start - Position at which to start search. |
---|
| 1088 | # op - Function to use to find next position. |
---|
| 1089 | |
---|
| 1090 | proc ::tk::TextPrevPos {w start op} { |
---|
| 1091 | set text "" |
---|
| 1092 | set cur $start |
---|
| 1093 | while {[$w compare $cur > 0.0]} { |
---|
| 1094 | set text [$w get "$cur linestart - 1c" $cur]$text |
---|
| 1095 | set pos [$op $text end] |
---|
| 1096 | if {$pos >= 0} { |
---|
| 1097 | ## Adjust for embedded windows and images |
---|
| 1098 | ## dump gives us 3 items per window/image |
---|
| 1099 | set dump [$w dump -image -window "$cur linestart" "$start - 1c"] |
---|
| 1100 | if {[llength $dump]} { |
---|
| 1101 | ## This is a hokey extra hack for control-arrow movement |
---|
| 1102 | ## that should be in a while loop to be correct (hobbs) |
---|
| 1103 | if {[$w compare [lindex $dump 2] > \ |
---|
| 1104 | "$cur linestart - 1c + $pos c"]} { |
---|
| 1105 | incr pos -1 |
---|
| 1106 | } |
---|
| 1107 | set pos [expr {$pos + ([llength $dump]/3)}] |
---|
| 1108 | } |
---|
| 1109 | return [$w index "$cur linestart - 1c + $pos c"] |
---|
| 1110 | } |
---|
| 1111 | set cur [$w index "$cur linestart - 1c"] |
---|
| 1112 | } |
---|
| 1113 | return 0.0 |
---|
| 1114 | } |
---|
| 1115 | |
---|
| 1116 | # ::tk::TextScanMark -- |
---|
| 1117 | # |
---|
| 1118 | # Marks the start of a possible scan drag operation |
---|
| 1119 | # |
---|
| 1120 | # Arguments: |
---|
| 1121 | # w - The text window from which the text to get |
---|
| 1122 | # x - x location on screen |
---|
| 1123 | # y - y location on screen |
---|
| 1124 | |
---|
| 1125 | proc ::tk::TextScanMark {w x y} { |
---|
| 1126 | $w scan mark $x $y |
---|
| 1127 | set ::tk::Priv(x) $x |
---|
| 1128 | set ::tk::Priv(y) $y |
---|
| 1129 | set ::tk::Priv(mouseMoved) 0 |
---|
| 1130 | } |
---|
| 1131 | |
---|
| 1132 | # ::tk::TextScanDrag -- |
---|
| 1133 | # |
---|
| 1134 | # Marks the start of a possible scan drag operation |
---|
| 1135 | # |
---|
| 1136 | # Arguments: |
---|
| 1137 | # w - The text window from which the text to get |
---|
| 1138 | # x - x location on screen |
---|
| 1139 | # y - y location on screen |
---|
| 1140 | |
---|
| 1141 | proc ::tk::TextScanDrag {w x y} { |
---|
| 1142 | # Make sure these exist, as some weird situations can trigger the |
---|
| 1143 | # motion binding without the initial press. [Bug #220269] |
---|
| 1144 | if {![info exists ::tk::Priv(x)]} { set ::tk::Priv(x) $x } |
---|
| 1145 | if {![info exists ::tk::Priv(y)]} { set ::tk::Priv(y) $y } |
---|
| 1146 | if {($x != $::tk::Priv(x)) || ($y != $::tk::Priv(y))} { |
---|
| 1147 | set ::tk::Priv(mouseMoved) 1 |
---|
| 1148 | } |
---|
| 1149 | if {[info exists ::tk::Priv(mouseMoved)] && $::tk::Priv(mouseMoved)} { |
---|
| 1150 | $w scan dragto $x $y |
---|
| 1151 | } |
---|
| 1152 | } |
---|