ctext(n) Ctext a text widget with highlighting support ctext(n) 







ctext - Ctext a text widget with highlighting support








package require Tk 


package require ctext ?3.2?


ctext pathName ?options?


::ctext::addHighlightClass pathName class
    color keywordlist


::ctext::addHighlightClassWithOnlyCharStart pathName
    class color char


::ctext::addHighlightClassForSpecialChars pathName
    class color charstring


::ctext::addHighlightClassForRegexp pathName
    class color pattern


::ctext::clearHighlightClasses pathName


::ctext::getHighlightClasses pathName


::ctext::deleteHighlightClass pathName
  class


::ctext::enableComments enable


::ctext::disableComments enable


pathName highlight startIndex
  endIndex


pathName fastdelete index1
  ?index2?


pathName fastinsert


pathName copy


pathName cut


pathName paste


pathName append


pathName configure option value
  ?...?












The ctext package provides the ctext widget which is an
    enhanced text widget with support for configurable syntax highlighting and
    some extra commands.


Ctext overloads the text widget and provides new commands, named
    highlight, copy, paste,cut, append, and
    edit. It also provides several commands that allow you to define
    classes. Each class corresponds to a tag in the widget.









  

  
Creates and configures a ctext widget.










Highlighting is controlled with text widget tags, that are called
    highlight classes. The class is a tag name and can be configured like
    any text widget tag. Four types of highlight classes are supported. All
    highlight classes are automatically used by the highlight method of
    the widget.



  
::ctext::addHighlightClass pathName class
    color keywordlist

  
Add a highlighting class class to the ctext widget pathName.
      The highligthing will be done with the color color. All words in
      the keywordlist will be highlighted.
    
	# highlight some tcl keywords
	::ctext::addHighlightClass .t tclkeywords red [list set info interp uplevel upvar]]
    

  

  
::ctext::addHighlightClassWithOnlyCharStart pathName
    class color char

  
Add a highlighting class class to the ctext widget pathName.
      The highligthing will be done with the color color. All words
      starting with char will be highlighted.
    
	::ctext::addHighlightClassWithOnlyCharStart .t vars blue \$
    

  

  
::ctext::addHighlightClassForSpecialChars pathName
    class color charstring

  
Add a highlighting class class to the ctext widget pathName.
      The highligthing will be done with the color color. All chars in
      charstring will be highlighted.

  
::ctext::addHighlightClassForRegexp pathName class
    color pattern

  
Add a highlighting class class to the ctext widget pathName.
      The highligthing will be done with the color color. All text parts
      matching the regexp pattern will be highligthed.

  
::ctext::clearHighlightClasses pathName

  
Remove all highlight classes from the widget pathName.

  
::ctext::getHighlightClasses pathName

  
List all highlight classes for the widget pathName.

  
::ctext::deleteHighlightClass pathName class

  
Delete the highlight class class from the widget
    pathName

  
::ctext::enableComments enable

  
Enable C comment highlighting. The class for c-style comments is
      _cComment. The C comment highlighting is disabled by default.

  
::ctext::disableComments enable

  
Disable C comment highlighting.










Each ctext widget created with the above command supports the
    following commands and options in addition to the standard text widget
    commands and options.



  

  
Highlight the text between startIndex and endIndex.

  

  
Delete text range without updating the highlighting. Arguments are
      identical to the pathName delete command inherited from the
      standard text widget.

  

  
Insert text without updating the highlighting. Arguments are identical to
      the pathName insert command inherited from the standard text
      widget.

  

  
Call tk_textCopy for the ctext instance.

  

  
Call tk_textCut for the ctext instance.

  

  
Call tk_textPaste for the ctext instance.

  

  
Append the current selection to the clipboard.

  

  
Set the options for the ctext widget. Each option name must be followed
      the new value.










Command-Line Switch:	-linemap
Database Name:	
Database Class:	




  

  
Creates (-linemap 1) or deletes (-linemap 0) a line number list on the
      left of the widget. The default is to have a linemap displayed.






Command-Line Switch:	-linemapfg
Database Name:	
Database Class:	




  

  
Changes the foreground of the linemap. The default is the same color as
      the main text widget.






Command-Line Switch:	-linemapbg
Database Name:	
Database Class:	




  

  
Changes the background of the linemap. The default is the same color as
      the main text widget.






Command-Line Switch:	-linemap_select_fg
Database Name:	
Database Class:	




  

  
Changes the selected line foreground. The default is black.






Command-Line Switch:	-linemap_select_bg
Database Name:	
Database Class:	




  

  
Changes the selected line background. The default is yellow.






Command-Line Switch:	-linemap_mark_command
Database Name:	
Database Class:	




  

  
Calls a procedure or command with the pathName of the ctext window,
      the type which is either marked or unmarked, and
      finally the line number selected. The proc prototype is:
    
proc linemark_cmd {win type line}.
    

    See also ctext_test_interactive.tcl






Command-Line Switch:	-highlight
Database Name:	
Database Class:	




  

  
Takes a boolean value which defines whether or not to highlight text which
      is inserted or deleted. The default is 1.






Command-Line Switch:	-linemap_markable
Database Name:	
Database Class:	




  

  
Takes a boolean value which specifies whether or not lines in the linemap
      are markable with the mouse. The default is 1.










	package require Tk
	package require ctext
	proc main {} {
	pack [frame .f] -fill both -expand 1
	pack [scrollbar .f.s -command {.f.t yview}] -side right -fill y
	pack [ctext .f.t -bg black -fg white -insertbackground yellow  -yscrollcommand {.f.s set}] -fill both -expand 1
	ctext::addHighlightClass .f.t widgets purple  [list ctext button label text frame toplevel  scrollbar checkbutton canvas listbox menu menubar menubutton  radiobutton scale entry message tk_chooseDir tk_getSaveFile  tk_getOpenFile tk_chooseColor tk_optionMenu]
	ctext::addHighlightClass .f.t flags orange  [list -text -command -yscrollcommand  -xscrollcommand -background -foreground -fg -bg  -highlightbackground -y -x -highlightcolor -relief -width  -height -wrap -font -fill -side -outline -style -insertwidth  -textvariable -activebackground -activeforeground -insertbackground  -anchor -orient -troughcolor -nonewline -expand -type -message  -title -offset -in -after -yscroll -xscroll -forward -regexp -count  -exact -padx -ipadx -filetypes -all -from -to -label -value -variable  -regexp -backwards -forwards -bd -pady -ipady -state -row -column  -cursor -highlightcolors -linemap -menu -tearoff -displayof -cursor  -underline -tags -tag]
	ctext::addHighlightClass .f.t stackControl red  {proc uplevel namespace while for foreach if else}
	ctext::addHighlightClassWithOnlyCharStart .f.t vars mediumspringgreen "\$"
	ctext::addHighlightClass .f.t variable_funcs gold {set global variable unset}
	ctext::addHighlightClassForSpecialChars .f.t brackets green {[]{}}
	ctext::addHighlightClassForRegexp .f.t paths lightblue {\.[a-zA-Z0-9\_\-]+}
	ctext::addHighlightClassForRegexp .f.t comments khaki {#[^\n\r]*}
	.f.t fastinsert end [info body main]
	pack [frame .f1] -fill x
	.f.t highlight 1.0 end
	pack [button .f1.exit -text Exit -command exit] -side left
	pack [entry .e] -side bottom -fill x
	.e insert end "ctext::deleteHighlightClass .f.t "
	bind .e <Return> {eval [.e get]}
	}
	main



Further examples are in the source package for ctext.








Kevin Kenny, Neil Madden, Jeffrey Hobbs, Richard Suchenwirth,
    Johan Bengtsson, Mac Cody, Günther, Andreas Sievers, and Michael
    Schlenker.








re_syntax, text








syntax highlighting, text, widget








Copyright (c) George Peter Staplin <GeorgePS@XMission.com>








  

    3.2
    ctext