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1 | # entry.tcl -- |
2 | # | |
3 | # This file contains Tcl procedures used to manage Tk entries. | |
4 | # | |
5 | # $Header: /user6/ouster/wish/scripts/RCS/entry.tcl,v 1.2 92/05/23 16:40:57 ouster Exp $ SPRITE (Berkeley) | |
6 | # | |
7 | # Copyright 1992 Regents of the University of California | |
8 | # Permission to use, copy, modify, and distribute this | |
9 | # software and its documentation for any purpose and without | |
10 | # fee is hereby granted, provided that this copyright | |
11 | # notice appears in all copies. The University of California | |
12 | # makes no representations about the suitability of this | |
13 | # software for any purpose. It is provided "as is" without | |
14 | # express or implied warranty. | |
15 | # | |
16 | ||
17 | # The procedure below is invoked to backspace over one character | |
18 | # in an entry widget. The name of the widget is passed as argument. | |
19 | ||
20 | proc tk_entryBackspace w { | |
21 | set x [expr {[$w index cursor] - 1}] | |
22 | if {$x != -1} {$w delete $x} | |
23 | } | |
24 | ||
25 | # The procedure below is invoked to backspace over one word in an | |
26 | # entry widget. The name of the widget is passed as argument. | |
27 | ||
28 | proc tk_entryBackword w { | |
29 | set string [$w get] | |
30 | set curs [expr [$w index cursor]-1] | |
31 | if {$curs < 0} return | |
32 | for {set x $curs} {$x > 0} {incr x -1} { | |
33 | if {([string first [string index $string $x] " \t"] < 0) | |
34 | && ([string first [string index $string [expr $x-1]] " \t"] | |
35 | >= 0)} { | |
36 | break | |
37 | } | |
38 | } | |
39 | $w delete $x $curs | |
40 | } | |
41 | ||
42 | # The procedure below is invoked after insertions. If the caret is not | |
43 | # visible in the window then the procedure adjusts the entry's view to | |
44 | # bring the caret back into the window again. | |
45 | ||
46 | proc tk_entrySeeCaret w { | |
47 | set c [$w index cursor] | |
48 | set left [$w index @0] | |
49 | if {$left > $c} { | |
50 | $w view $c | |
51 | return | |
52 | } | |
53 | while {[$w index @[expr [winfo width $w]-5]] < $c} { | |
54 | set left [expr $left+1] | |
55 | $w view $left | |
56 | } | |
57 | } | |
58 | ||
59 | proc tk_entryCopyPress {w} { | |
60 | set sel "" | |
61 | catch {set sel [selection -window $w get]} | |
62 | $w insert cursor $sel | |
63 | tk_entrySeeCaret $w | |
64 | } | |
65 | ||
66 | proc tk_entryCutPress {w} { | |
67 | catch {$w delete sel.first sel.last} | |
68 | tk_entrySeeCaret $w | |
69 | } | |
70 | ||
71 | proc tk_entryDelLine {w} { | |
72 | $w delete 0 end | |
73 | } | |
74 | ||
75 | proc tk_entryDelPress {w} { | |
76 | tk_entryBackspace $w | |
77 | tk_entrySeeCaret $w | |
78 | } |