| 1 |
578 |
markom |
# ----------------------------------------------------------------------
|
| 2 |
|
|
# EXAMPLE: TextDisplay widget
|
| 3 |
|
|
# ----------------------------------------------------------------------
|
| 4 |
|
|
# COURSE: Object-Oriented Programming with [incr Tcl]
|
| 5 |
|
|
# AUTHOR: Michael J. McLennan, Bell Labs Innovations
|
| 6 |
|
|
# ======================================================================
|
| 7 |
|
|
# Copyright (c) 1996 Lucent Technologies
|
| 8 |
|
|
# ======================================================================
|
| 9 |
|
|
|
| 10 |
|
|
option add *TextDisplay.width 3i widgetDefault
|
| 11 |
|
|
option add *TextDisplay.height 2i widgetDefault
|
| 12 |
|
|
|
| 13 |
|
|
option add *TextDisplay.scrollbar auto widgetDefault
|
| 14 |
|
|
option add *TextDisplay.wrap none widgetDefault
|
| 15 |
|
|
option add *TextDisplay.textBackground ivory widgetDefault
|
| 16 |
|
|
|
| 17 |
|
|
class TextDisplay {
|
| 18 |
|
|
inherit itk::Widget
|
| 19 |
|
|
|
| 20 |
|
|
constructor {args} {
|
| 21 |
|
|
itk_option add hull.width hull.height
|
| 22 |
|
|
|
| 23 |
|
|
itk_component add text {
|
| 24 |
|
|
text $itk_interior.info -state disabled -width 1 -height 1 \
|
| 25 |
|
|
-yscrollcommand [code $itk_interior.sbar set]
|
| 26 |
|
|
} {
|
| 27 |
|
|
usual
|
| 28 |
|
|
keep -wrap -tabs
|
| 29 |
|
|
rename -background -textbackground textBackground Background
|
| 30 |
|
|
}
|
| 31 |
|
|
pack $itk_component(text) -side left -expand yes -fill both
|
| 32 |
|
|
|
| 33 |
|
|
itk_component add scrollbar {
|
| 34 |
|
|
scrollbar $itk_interior.sbar \
|
| 35 |
|
|
-command [code $itk_interior.info yview]
|
| 36 |
|
|
}
|
| 37 |
|
|
pack $itk_component(scrollbar) -side right -fill y
|
| 38 |
|
|
|
| 39 |
|
|
eval itk_initialize $args
|
| 40 |
|
|
|
| 41 |
|
|
pack propagate $itk_component(hull) 0
|
| 42 |
|
|
|
| 43 |
|
|
fixScrollbar
|
| 44 |
|
|
bind $itk_component(text) [code $this fixScrollbar]
|
| 45 |
|
|
|
| 46 |
|
|
$itk_component(text) tag configure bold \
|
| 47 |
|
|
-font -*-courier-bold-r-normal--*-120-*
|
| 48 |
|
|
|
| 49 |
|
|
$itk_component(text) tag configure italic \
|
| 50 |
|
|
-font -*-courier-medium-o-normal--*-120-*
|
| 51 |
|
|
}
|
| 52 |
|
|
|
| 53 |
|
|
public method display {info}
|
| 54 |
|
|
public method append {info}
|
| 55 |
|
|
public method substitute {word newword}
|
| 56 |
|
|
|
| 57 |
|
|
itk_option define -scrollbar scrollbar Scrollbar "on" {
|
| 58 |
|
|
switch -- $itk_option(-scrollbar) {
|
| 59 |
|
|
on - off - auto {
|
| 60 |
|
|
fixScrollbar
|
| 61 |
|
|
}
|
| 62 |
|
|
default {
|
| 63 |
|
|
error "bad value \"$itk_option(-scollbar)\""
|
| 64 |
|
|
}
|
| 65 |
|
|
}
|
| 66 |
|
|
}
|
| 67 |
|
|
|
| 68 |
|
|
protected method fixScrollbar {}
|
| 69 |
|
|
private variable sbvisible 1
|
| 70 |
|
|
}
|
| 71 |
|
|
|
| 72 |
|
|
body TextDisplay::display {args} {
|
| 73 |
|
|
$itk_component(text) configure -state normal
|
| 74 |
|
|
$itk_component(text) delete 1.0 end
|
| 75 |
|
|
eval $itk_component(text) insert 1.0 $args
|
| 76 |
|
|
$itk_component(text) configure -state disabled
|
| 77 |
|
|
fixScrollbar
|
| 78 |
|
|
}
|
| 79 |
|
|
|
| 80 |
|
|
body TextDisplay::append {args} {
|
| 81 |
|
|
$itk_component(text) configure -state normal
|
| 82 |
|
|
eval $itk_component(text) insert end $args
|
| 83 |
|
|
$itk_component(text) configure -state disabled
|
| 84 |
|
|
fixScrollbar
|
| 85 |
|
|
}
|
| 86 |
|
|
|
| 87 |
|
|
body TextDisplay::substitute {word newword} {
|
| 88 |
|
|
$itk_component(text) configure -state normal
|
| 89 |
|
|
|
| 90 |
|
|
set index 1.0
|
| 91 |
|
|
while {1} {
|
| 92 |
|
|
set index [$itk_component(text) search -count len $word $index]
|
| 93 |
|
|
if {$index != ""} {
|
| 94 |
|
|
$itk_component(text) delete $index "$index + $len chars"
|
| 95 |
|
|
$itk_component(text) insert $index $newword
|
| 96 |
|
|
} else {
|
| 97 |
|
|
break
|
| 98 |
|
|
}
|
| 99 |
|
|
}
|
| 100 |
|
|
$itk_component(text) configure -state disabled
|
| 101 |
|
|
fixScrollbar
|
| 102 |
|
|
}
|
| 103 |
|
|
|
| 104 |
|
|
body TextDisplay::fixScrollbar {} {
|
| 105 |
|
|
switch $itk_option(-scrollbar) {
|
| 106 |
|
|
on { set sbstate 1 }
|
| 107 |
|
|
off { set sbstate 0 }
|
| 108 |
|
|
|
| 109 |
|
|
auto {
|
| 110 |
|
|
if {[$itk_component(text) bbox 1.0] == "" ||
|
| 111 |
|
|
[$itk_component(text) bbox end-1char] == ""} {
|
| 112 |
|
|
set sbstate 1
|
| 113 |
|
|
} else {
|
| 114 |
|
|
set sbstate 0
|
| 115 |
|
|
}
|
| 116 |
|
|
}
|
| 117 |
|
|
}
|
| 118 |
|
|
if {$sbstate != $sbvisible} {
|
| 119 |
|
|
if {$sbstate} {
|
| 120 |
|
|
pack $itk_component(scrollbar) -side right -fill y
|
| 121 |
|
|
} else {
|
| 122 |
|
|
pack forget $itk_component(scrollbar)
|
| 123 |
|
|
}
|
| 124 |
|
|
set sbvisible $sbstate
|
| 125 |
|
|
}
|
| 126 |
|
|
}
|
| 127 |
|
|
|
| 128 |
|
|
usual TextDisplay {
|
| 129 |
|
|
keep -background -cursor -foreground -font
|
| 130 |
|
|
keep -activebackground -activerelief
|
| 131 |
|
|
keep -highlightcolor -highlightthickness
|
| 132 |
|
|
keep -insertbackground -insertborderwidth -insertwidth
|
| 133 |
|
|
keep -insertontime -insertofftime
|
| 134 |
|
|
keep -selectbackground -selectborderwidth -selectforeground
|
| 135 |
|
|
keep -textbackground -troughcolor
|
| 136 |
|
|
}
|
