/usr/share/tcltk/tklib0.6/ctext/ctext.tcl is in tklib 0.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# See also the README for a list of contributors
# RCS: @(#) $Id: ctext.tcl,v 1.9 2011/04/18 19:49:48 andreas_kupries Exp $
package require Tk
package provide ctext 3.3
namespace eval ctext {}
#win is used as a unique token to create arrays for each ctext instance
proc ctext::getAr {win suffix name} {
set arName __ctext[set win][set suffix]
uplevel [list upvar \#0 $arName $name]
return $arName
}
proc ctext {win args} {
if {[llength $args] & 1} {
return -code error \
"invalid number of arguments given to ctext (uneven number after window) : $args"
}
frame $win -class Ctext
set tmp [text .__ctextTemp]
ctext::getAr $win config ar
set ar(-fg) [$tmp cget -foreground]
set ar(-bg) [$tmp cget -background]
set ar(-font) [$tmp cget -font]
set ar(-relief) [$tmp cget -relief]
destroy $tmp
set ar(-yscrollcommand) ""
set ar(-linemap) 1
set ar(-linemapfg) $ar(-fg)
set ar(-linemapbg) $ar(-bg)
set ar(-linemap_mark_command) {}
set ar(-linemap_markable) 1
set ar(-linemap_select_fg) black
set ar(-linemap_select_bg) yellow
set ar(-highlight) 1
set ar(win) $win
set ar(modified) 0
set ar(commentsAfterId) ""
set ar(highlightAfterId) ""
set ar(blinkAfterId) ""
set ar(ctextFlags) [list -yscrollcommand -linemap -linemapfg -linemapbg \
-font -linemap_mark_command -highlight -linemap_markable \
-linemap_select_fg \
-linemap_select_bg]
array set ar $args
foreach flag {foreground background} short {fg bg} {
if {[info exists ar(-$flag)] == 1} {
set ar(-$short) $ar(-$flag)
unset ar(-$flag)
}
}
# Now remove flags that will confuse text and those that need
# modification:
foreach arg $ar(ctextFlags) {
if {[set loc [lsearch $args $arg]] >= 0} {
set args [lreplace $args $loc [expr {$loc + 1}]]
}
}
text $win.l -font $ar(-font) -width 1 -height 1 \
-relief $ar(-relief) -fg $ar(-linemapfg) \
-bg $ar(-linemapbg) -takefocus 0
set topWin [winfo toplevel $win]
bindtags $win.l [list $win.l $topWin all]
if {$ar(-linemap) == 1} {
grid $win.l -sticky ns -row 0 -column 0
}
set args [concat $args [list -yscrollcommand \
[list ctext::event:yscroll $win $ar(-yscrollcommand)]]]
#escape $win, because it could have a space
eval text \$win.t -font \$ar(-font) $args
grid $win.t -row 0 -column 1 -sticky news
grid rowconfigure $win 0 -weight 100
grid columnconfigure $win 1 -weight 100
bind $win.t <Configure> [list ctext::linemapUpdate $win]
bind $win.l <ButtonPress-1> [list ctext::linemapToggleMark $win %y]
bind $win.t <KeyRelease-Return> [list ctext::linemapUpdate $win]
rename $win __ctextJunk$win
rename $win.t $win._t
bind $win <Destroy> [list ctext::event:Destroy $win %W]
bindtags $win.t [linsert [bindtags $win.t] 0 $win]
interp alias {} $win {} ctext::instanceCmd $win
interp alias {} $win.t {} $win
# If the user wants C comments they should call
# ctext::enableComments
ctext::disableComments $win
ctext::modified $win 0
ctext::buildArgParseTable $win
return $win
}
proc ctext::event:yscroll {win clientData args} {
ctext::linemapUpdate $win
if {$clientData == ""} {
return
}
uplevel \#0 $clientData $args
}
proc ctext::event:Destroy {win dWin} {
if {![string equal $win $dWin]} {
return
}
ctext::getAr $win config configAr
catch {after cancel $configAr(commentsAfterId)}
catch {after cancel $configAr(highlightAfterId)}
catch {after cancel $configAr(blinkAfterId)}
catch {rename $win {}}
interp alias {} $win.t {}
ctext::clearHighlightClasses $win
array unset [ctext::getAr $win config ar]
}
# This stores the arg table within the config array for each instance.
# It's used by the configure instance command.
proc ctext::buildArgParseTable win {
set argTable [list]
lappend argTable any -linemap_mark_command {
set configAr(-linemap_mark_command) $value
break
}
lappend argTable {1 true yes} -linemap {
grid $self.l -sticky ns -row 0 -column 0
grid columnconfigure $self 0 \
-minsize [winfo reqwidth $self.l]
set configAr(-linemap) 1
break
}
lappend argTable {0 false no} -linemap {
grid forget $self.l
grid columnconfigure $self 0 -minsize 0
set configAr(-linemap) 0
break
}
lappend argTable any -yscrollcommand {
set cmd [list $self._t config -yscrollcommand \
[list ctext::event:yscroll $self $value]]
if {[catch $cmd res]} {
return $res
}
set configAr(-yscrollcommand) $value
break
}
lappend argTable any -linemapfg {
if {[catch {winfo rgb $self $value} res]} {
return -code error $res
}
$self.l config -fg $value
set configAr(-linemapfg) $value
break
}
lappend argTable any -linemapbg {
if {[catch {winfo rgb $self $value} res]} {
return -code error $res
}
$self.l config -bg $value
set configAr(-linemapbg) $value
break
}
lappend argTable any -font {
if {[catch {$self.l config -font $value} res]} {
return -code error $res
}
$self._t config -font $value
set configAr(-font) $value
break
}
lappend argTable {0 false no} -highlight {
set configAr(-highlight) 0
break
}
lappend argTable {1 true yes} -highlight {
set configAr(-highlight) 1
break
}
lappend argTable {0 false no} -linemap_markable {
set configAr(-linemap_markable) 0
break
}
lappend argTable {1 true yes} -linemap_markable {
set configAr(-linemap_markable) 1
break
}
lappend argTable any -linemap_select_fg {
if {[catch {winfo rgb $self $value} res]} {
return -code error $res
}
set configAr(-linemap_select_fg) $value
$self.l tag configure lmark -foreground $value
break
}
lappend argTable any -linemap_select_bg {
if {[catch {winfo rgb $self $value} res]} {
return -code error $res
}
set configAr(-linemap_select_bg) $value
$self.l tag configure lmark -background $value
break
}
ctext::getAr $win config ar
set ar(argTable) $argTable
}
proc ctext::commentsAfterIdle {win} {
ctext::getAr $win config configAr
if {"" eq $configAr(commentsAfterId)} {
set configAr(commentsAfterId) [after idle \
[list ctext::comments $win [set afterTriggered 1]]]
}
}
proc ctext::highlightAfterIdle {win lineStart lineEnd} {
ctext::getAr $win config configAr
if {"" eq $configAr(highlightAfterId)} {
set configAr(highlightAfterId) [after idle \
[list ctext::highlight $win $lineStart $lineEnd [set afterTriggered 1]]]
}
}
proc ctext::instanceCmd {self cmd args} {
#slightly different than the RE used in ctext::comments
set commentRE {\"|\\|'|/|\*}
switch -glob -- $cmd {
append {
if {[catch {$self._t get sel.first sel.last} data] == 0} {
clipboard append -displayof $self $data
}
}
cget {
set arg [lindex $args 0]
ctext::getAr $self config configAr
foreach flag $configAr(ctextFlags) {
if {[string match ${arg}* $flag]} {
return [set configAr($flag)]
}
}
return [$self._t cget $arg]
}
conf* {
ctext::getAr $self config configAr
if {0 == [llength $args]} {
set res [$self._t configure]
set del [lsearch -glob $res -yscrollcommand*]
set res [lreplace $res $del $del]
foreach flag $configAr(ctextFlags) {
lappend res [list $flag [set configAr($flag)]]
}
return $res
}
array set flags {}
foreach flag $configAr(ctextFlags) {
set loc [lsearch $args $flag]
if {$loc < 0} {
continue
}
if {[llength $args] <= ($loc + 1)} {
#.t config -flag
return [set configAr($flag)]
}
set flagArg [lindex $args [expr {$loc + 1}]]
set args [lreplace $args $loc [expr {$loc + 1}]]
set flags($flag) $flagArg
}
foreach {valueList flag cmd} $configAr(argTable) {
if {[info exists flags($flag)]} {
foreach valueToCheckFor $valueList {
set value [set flags($flag)]
if {[string equal "any" $valueToCheckFor]} $cmd \
elseif {[string equal $valueToCheckFor [set flags($flag)]]} $cmd
}
}
}
if {[llength $args]} {
#we take care of configure without args at the top of this branch
uplevel 1 [linsert $args 0 $self._t configure]
}
}
copy {
tk_textCopy $self
}
cut {
if {[catch {$self.t get sel.first sel.last} data] == 0} {
clipboard clear -displayof $self.t
clipboard append -displayof $self.t $data
$self delete [$self.t index sel.first] [$self.t index sel.last]
ctext::modified $self 1
}
}
delete {
#delete n.n ?n.n
set argsLength [llength $args]
#first deal with delete n.n
if {$argsLength == 1} {
set deletePos [lindex $args 0]
set prevChar [$self._t get $deletePos]
$self._t delete $deletePos
set char [$self._t get $deletePos]
set prevSpace [ctext::findPreviousSpace $self._t $deletePos]
set nextSpace [ctext::findNextSpace $self._t $deletePos]
set lineStart [$self._t index "$deletePos linestart"]
set lineEnd [$self._t index "$deletePos + 1 chars lineend"]
#This pattern was used in 3.1. We may want to investigate using it again
#eventually to reduce flicker. It caused a bug with some patterns.
#if {[string equal $prevChar "#"] || [string equal $char "#"]} {
# set removeStart $lineStart
# set removeEnd $lineEnd
#} else {
# set removeStart $prevSpace
# set removeEnd $nextSpace
#}
set removeStart $lineStart
set removeEnd $lineEnd
foreach tag [$self._t tag names] {
if {[string equal $tag "_cComment"] != 1} {
$self._t tag remove $tag $removeStart $removeEnd
}
}
set checkStr "$prevChar[set char]"
if {[regexp $commentRE $checkStr]} {
ctext::commentsAfterIdle $self
}
ctext::highlightAfterIdle $self $lineStart $lineEnd
ctext::linemapUpdate $self
} elseif {$argsLength == 2} {
#now deal with delete n.n ?n.n?
set deleteStartPos [lindex $args 0]
set deleteEndPos [lindex $args 1]
set data [$self._t get $deleteStartPos $deleteEndPos]
set lineStart [$self._t index "$deleteStartPos linestart"]
set lineEnd [$self._t index "$deleteEndPos + 1 chars lineend"]
eval \$self._t delete $args
foreach tag [$self._t tag names] {
if {[string equal $tag "_cComment"] != 1} {
$self._t tag remove $tag $lineStart $lineEnd
}
}
if {[regexp $commentRE $data]} {
ctext::commentsAfterIdle $self
}
ctext::highlightAfterIdle $self $lineStart $lineEnd
if {[string first "\n" $data] >= 0} {
ctext::linemapUpdate $self
}
} else {
return -code error "invalid argument(s) sent to $self delete: $args"
}
ctext::modified $self 1
}
fastdelete {
eval \$self._t delete $args
ctext::modified $self 1
ctext::linemapUpdate $self
}
fastinsert {
eval \$self._t insert $args
ctext::modified $self 1
ctext::linemapUpdate $self
}
highlight {
ctext::highlight $self [lindex $args 0] [lindex $args 1]
ctext::comments $self
}
insert {
if {[llength $args] < 2} {
return -code error "please use at least 2 arguments to $self insert"
}
set insertPos [lindex $args 0]
set prevChar [$self._t get "$insertPos - 1 chars"]
set nextChar [$self._t get $insertPos]
set lineStart [$self._t index "$insertPos linestart"]
set prevSpace [ctext::findPreviousSpace $self._t ${insertPos}-1c]
set data [lindex $args 1]
eval \$self._t insert $args
set nextSpace [ctext::findNextSpace $self._t insert]
set lineEnd [$self._t index "insert lineend"]
if {[$self._t compare $prevSpace < $lineStart]} {
set prevSpace $lineStart
}
if {[$self._t compare $nextSpace > $lineEnd]} {
set nextSpace $lineEnd
}
foreach tag [$self._t tag names] {
if {[string equal $tag "_cComment"] != 1} {
$self._t tag remove $tag $prevSpace $nextSpace
}
}
set REData $prevChar
append REData $data
append REData $nextChar
if {[regexp $commentRE $REData]} {
ctext::commentsAfterIdle $self
}
ctext::highlightAfterIdle $self $lineStart $lineEnd
switch -- $data {
"\}" {
ctext::matchPair $self "\\\{" "\\\}" "\\"
}
"\]" {
ctext::matchPair $self "\\\[" "\\\]" "\\"
}
"\)" {
ctext::matchPair $self "\\(" "\\)" ""
}
"\"" {
ctext::matchQuote $self
}
}
ctext::modified $self 1
ctext::linemapUpdate $self
}
paste {
tk_textPaste $self
ctext::modified $self 1
}
edit {
set subCmd [lindex $args 0]
set argsLength [llength $args]
ctext::getAr $self config ar
if {"modified" == $subCmd} {
if {$argsLength == 1} {
return $ar(modified)
} elseif {$argsLength == 2} {
set value [lindex $args 1]
set ar(modified) $value
} else {
return -code error "invalid arg(s) to $self edit modified: $args"
}
} else {
#Tk 8.4 has other edit subcommands that I don't want to emulate.
return [uplevel 1 [linsert $args 0 $self._t $cmd]]
}
}
default {
return [uplevel 1 [linsert $args 0 $self._t $cmd]]
}
}
}
proc ctext::tag:blink {win count {afterTriggered 0}} {
if {$count & 1} {
$win tag configure __ctext_blink \
-foreground [$win cget -bg] -background [$win cget -fg]
} else {
$win tag configure __ctext_blink \
-foreground [$win cget -fg] -background [$win cget -bg]
}
ctext::getAr $win config configAr
if {$afterTriggered} {
set configAr(blinkAfterId) ""
}
if {$count == 4} {
$win tag delete __ctext_blink 1.0 end
return
}
incr count
if {"" eq $configAr(blinkAfterId)} {
set configAr(blinkAfterId) [after 50 \
[list ctext::tag:blink $win $count [set afterTriggered 1]]]
}
}
proc ctext::matchPair {win str1 str2 escape} {
set prevChar [$win get "insert - 2 chars"]
if {[string equal $prevChar $escape]} {
#The char that we thought might be the end is actually escaped.
return
}
set searchRE "[set str1]|[set str2]"
set count 1
set pos [$win index "insert - 1 chars"]
set endPair $pos
set lastFound ""
while 1 {
set found [$win search -backwards -regexp $searchRE $pos]
if {$found == "" || [$win compare $found > $pos]} {
return
}
if {$lastFound != "" && [$win compare $found == $lastFound]} {
#The search wrapped and found the previous search
return
}
set lastFound $found
set char [$win get $found]
set prevChar [$win get "$found - 1 chars"]
set pos $found
if {[string equal $prevChar $escape]} {
continue
} elseif {[string equal $char [subst $str2]]} {
incr count
} elseif {[string equal $char [subst $str1]]} {
incr count -1
if {$count == 0} {
set startPair $found
break
}
} else {
# This shouldn't happen. I may in the future make it
# return -code error
puts stderr "ctext seems to have encountered a bug in ctext::matchPair"
return
}
}
$win tag add __ctext_blink $startPair
$win tag add __ctext_blink $endPair
ctext::tag:blink $win 0
}
proc ctext::matchQuote {win} {
set endQuote [$win index insert]
set start [$win index "insert - 1 chars"]
if {[$win get "$start - 1 chars"] == "\\"} {
#the quote really isn't the end
return
}
set lastFound ""
while 1 {
set startQuote [$win search -backwards \" $start]
if {$startQuote == "" || [$win compare $startQuote > $start]} {
#The search found nothing or it wrapped.
return
}
if {$lastFound != "" && [$win compare $lastFound == $startQuote]} {
#We found the character we found before, so it wrapped.
return
}
set lastFound $startQuote
set start [$win index "$startQuote - 1 chars"]
set prevChar [$win get $start]
if {$prevChar == "\\"} {
continue
}
break
}
if {[$win compare $endQuote == $startQuote]} {
#probably just \"
return
}
$win tag add __ctext_blink $startQuote $endQuote
ctext::tag:blink $win 0
}
proc ctext::enableComments {win} {
$win tag configure _cComment -foreground khaki
}
proc ctext::disableComments {win} {
catch {$win tag delete _cComment}
}
proc ctext::comments {win {afterTriggered 0}} {
if {[catch {$win tag cget _cComment -foreground}]} {
#C comments are disabled
return
}
if {$afterTriggered} {
ctext::getAr $win config configAr
set configAr(commentsAfterId) ""
}
set startIndex 1.0
set commentRE {\\\\|\"|\\\"|\\'|'|/\*|\*/}
set commentStart 0
set isQuote 0
set isSingleQuote 0
set isComment 0
$win tag remove _cComment 1.0 end
while 1 {
set index [$win search -count length -regexp $commentRE $startIndex end]
if {$index == ""} {
break
}
set endIndex [$win index "$index + $length chars"]
set str [$win get $index $endIndex]
set startIndex $endIndex
if {$str == "\\\\"} {
continue
} elseif {$str == "\\\""} {
continue
} elseif {$str == "\\'"} {
continue
} elseif {$str == "\"" && $isComment == 0 && $isSingleQuote == 0} {
if {$isQuote} {
set isQuote 0
} else {
set isQuote 1
}
} elseif {$str == "'" && $isComment == 0 && $isQuote == 0} {
if {$isSingleQuote} {
set isSingleQuote 0
} else {
set isSingleQuote 1
}
} elseif {$str == "/*" && $isQuote == 0 && $isSingleQuote == 0} {
if {$isComment} {
#comment in comment
break
} else {
set isComment 1
set commentStart $index
}
} elseif {$str == "*/" && $isQuote == 0 && $isSingleQuote == 0} {
if {$isComment} {
set isComment 0
$win tag add _cComment $commentStart $endIndex
$win tag raise _cComment
} else {
#comment end without beginning
break
}
}
}
}
proc ctext::addHighlightClass {win class color keywords} {
set ref [ctext::getAr $win highlight ar]
foreach word $keywords {
set ar($word) [list $class $color]
}
$win tag configure $class
ctext::getAr $win classes classesAr
set classesAr($class) [list $ref $keywords]
}
#For [ ] { } # etc.
proc ctext::addHighlightClassForSpecialChars {win class color chars} {
set charList [split $chars ""]
set ref [ctext::getAr $win highlightSpecialChars ar]
foreach char $charList {
set ar($char) [list $class $color]
}
$win tag configure $class
ctext::getAr $win classes classesAr
set classesAr($class) [list $ref $charList]
}
proc ctext::addHighlightClassForRegexp {win class color re} {
set ref [ctext::getAr $win highlightRegexp ar]
set ar($class) [list $re $color]
$win tag configure $class
ctext::getAr $win classes classesAr
set classesAr($class) [list $ref $class]
}
#For things like $blah
proc ctext::addHighlightClassWithOnlyCharStart {win class color char} {
set ref [ctext::getAr $win highlightCharStart ar]
set ar($char) [list $class $color]
$win tag configure $class
ctext::getAr $win classes classesAr
set classesAr($class) [list $ref $char]
}
proc ctext::deleteHighlightClass {win classToDelete} {
ctext::getAr $win classes classesAr
if {![info exists classesAr($classToDelete)]} {
return -code error "$classToDelete doesn't exist"
}
foreach {ref keyList} [set classesAr($classToDelete)] {
upvar #0 $ref refAr
foreach key $keyList {
if {![info exists refAr($key)]} {
continue
}
unset refAr($key)
}
}
unset classesAr($classToDelete)
}
proc ctext::getHighlightClasses win {
ctext::getAr $win classes classesAr
array names classesAr
}
proc ctext::findNextChar {win index char} {
set i [$win index "$index + 1 chars"]
set lineend [$win index "$i lineend"]
while 1 {
set ch [$win get $i]
if {[$win compare $i >= $lineend]} {
return ""
}
if {$ch == $char} {
return $i
}
set i [$win index "$i + 1 chars"]
}
}
proc ctext::findNextSpace {win index} {
set i [$win index $index]
set lineStart [$win index "$i linestart"]
set lineEnd [$win index "$i lineend"]
#Sometimes the lineend fails (I don't know why), so add 1 and try again.
if {[$win compare $lineEnd == $lineStart]} {
set lineEnd [$win index "$i + 1 chars lineend"]
}
while {1} {
set ch [$win get $i]
if {[$win compare $i >= $lineEnd]} {
set i $lineEnd
break
}
if {[string is space $ch]} {
break
}
set i [$win index "$i + 1 chars"]
}
return $i
}
proc ctext::findPreviousSpace {win index} {
set i [$win index $index]
set lineStart [$win index "$i linestart"]
while {1} {
set ch [$win get $i]
if {[$win compare $i <= $lineStart]} {
set i $lineStart
break
}
if {[string is space $ch]} {
break
}
set i [$win index "$i - 1 chars"]
}
return $i
}
proc ctext::clearHighlightClasses {win} {
#no need to catch, because array unset doesn't complain
#puts [array exists ::ctext::highlight$win]
ctext::getAr $win highlight ar
array unset ar
ctext::getAr $win highlightSpecialChars ar
array unset ar
ctext::getAr $win highlightRegexp ar
array unset ar
ctext::getAr $win highlightCharStart ar
array unset ar
ctext::getAr $win classes ar
array unset ar
}
#This is a proc designed to be overwritten by the user.
#It can be used to update a cursor or animation while
#the text is being highlighted.
proc ctext::update {} {
}
proc ctext::highlight {win start end {afterTriggered 0}} {
ctext::getAr $win config configAr
if {$afterTriggered} {
set configAr(highlightAfterId) ""
}
if {!$configAr(-highlight)} {
return
}
set si $start
set twin "$win._t"
#The number of times the loop has run.
set numTimesLooped 0
set numUntilUpdate 600
ctext::getAr $win highlight highlightAr
ctext::getAr $win highlightSpecialChars highlightSpecialCharsAr
ctext::getAr $win highlightRegexp highlightRegexpAr
ctext::getAr $win highlightCharStart highlightCharStartAr
while 1 {
set res [$twin search -count length -regexp -- {([^\s\(\{\[\}\]\)\.\t\n\r;\"'\|,]+)} $si $end]
if {$res == ""} {
break
}
set wordEnd [$twin index "$res + $length chars"]
set word [$twin get $res $wordEnd]
set firstOfWord [string index $word 0]
if {[info exists highlightAr($word)] == 1} {
set wordAttributes [set highlightAr($word)]
foreach {tagClass color} $wordAttributes break
$twin tag add $tagClass $res $wordEnd
$twin tag configure $tagClass -foreground $color
} elseif {[info exists highlightCharStartAr($firstOfWord)] == 1} {
set wordAttributes [set highlightCharStartAr($firstOfWord)]
foreach {tagClass color} $wordAttributes break
$twin tag add $tagClass $res $wordEnd
$twin tag configure $tagClass -foreground $color
}
set si $wordEnd
incr numTimesLooped
if {$numTimesLooped >= $numUntilUpdate} {
ctext::update
set numTimesLooped 0
}
}
foreach {ichar tagInfo} [array get highlightSpecialCharsAr] {
set si $start
foreach {tagClass color} $tagInfo break
while 1 {
set res [$twin search -- $ichar $si $end]
if {"" == $res} {
break
}
set wordEnd [$twin index "$res + 1 chars"]
$twin tag add $tagClass $res $wordEnd
$twin tag configure $tagClass -foreground $color
set si $wordEnd
incr numTimesLooped
if {$numTimesLooped >= $numUntilUpdate} {
ctext::update
set numTimesLooped 0
}
}
}
foreach {tagClass tagInfo} [array get highlightRegexpAr] {
set si $start
foreach {re color} $tagInfo break
while 1 {
set res [$twin search -count length -regexp -- $re $si $end]
if {"" == $res} {
break
}
set wordEnd [$twin index "$res + $length chars"]
$twin tag add $tagClass $res $wordEnd
$twin tag configure $tagClass -foreground $color
set si $wordEnd
incr numTimesLooped
if {$numTimesLooped >= $numUntilUpdate} {
ctext::update
set numTimesLooped 0
}
}
}
}
proc ctext::linemapToggleMark {win y} {
ctext::getAr $win config configAr
if {!$configAr(-linemap_markable)} {
return
}
set markChar [$win.l index @0,$y]
set lineSelected [lindex [split $markChar .] 0]
set line [$win.l get $lineSelected.0 $lineSelected.end]
if {$line == ""} {
return
}
ctext::getAr $win linemap linemapAr
if {[info exists linemapAr($line)] == 1} {
#It's already marked, so unmark it.
array unset linemapAr $line
ctext::linemapUpdate $win
set type unmarked
} else {
#This means that the line isn't toggled, so toggle it.
array set linemapAr [list $line {}]
$win.l tag add lmark $markChar [$win.l index "$markChar lineend"]
$win.l tag configure lmark -foreground $configAr(-linemap_select_fg) \
-background $configAr(-linemap_select_bg)
set type marked
}
if {[string length $configAr(-linemap_mark_command)]} {
uplevel #0 [linsert $configAr(-linemap_mark_command) end $win $type $line]
}
}
#args is here because -yscrollcommand may call it
proc ctext::linemapUpdate {win args} {
if {[winfo exists $win.l] != 1} {
return
}
set pixel 0
set lastLine {}
set lineList [list]
set fontMetrics [font metrics [$win._t cget -font]]
set incrBy [expr {1 + ([lindex $fontMetrics 5] / 2)}]
while {$pixel < [winfo height $win.l]} {
set idx [$win._t index @0,$pixel]
if {$idx != $lastLine} {
set line [lindex [split $idx .] 0]
set lastLine $idx
lappend lineList $line
}
incr pixel $incrBy
}
ctext::getAr $win linemap linemapAr
$win.l delete 1.0 end
set lastLine {}
foreach line $lineList {
if {$line == $lastLine} {
$win.l insert end "\n"
} else {
if {[info exists linemapAr($line)]} {
$win.l insert end "$line\n" lmark
} else {
$win.l insert end "$line\n"
}
}
set lastLine $line
}
if {[llength $lineList] > 0} {
linemapUpdateOffset $win $lineList
}
set endrow [lindex [split [$win._t index end-1c] .] 0]
$win.l configure -width [string length $endrow]
}
# Starting with Tk 8.5 the text widget allows smooth scrolling; this
# code calculates the offset for the line numbering text widget and
# scrolls by the specified amount of pixels
if {![catch {
package require Tk 8.5
}]} {
proc ctext::linemapUpdateOffset {win lineList} {
# reset view for line numbering widget
$win.l yview 0.0
# find the first line that is visible and calculate the
# corresponding line in the line numbers widget
set lline 1
foreach line $lineList {
set tystart [lindex [$win.t bbox $line.0] 1]
if {$tystart != ""} {
break
}
incr lline
}
# return in case the line numbers text widget is not up to
# date
if {[catch {
set lystart [lindex [$win.l bbox $lline.0] 1]
}]} {
return
}
# return in case the bbox for any of the lines returned an
# empty value
if {($tystart == "") || ($lystart == "")} {
return
}
# calculate the offset and then scroll by specified number of
# pixels
set offset [expr {$lystart - $tystart}]
$win.l yview scroll $offset pixels
}
} else {
# Do not try to perform smooth scrolling if Tk is 8.4 or less.
proc ctext::linemapUpdateOffset {args} {}
}
proc ctext::modified {win value} {
ctext::getAr $win config ar
set ar(modified) $value
event generate $win <<Modified>>
return $value
}
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