'\"
'\" Generated from file 'ctext\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) George Peter Staplin <GeorgePS@XMission\&.com>
'\"
.TH "ctext" n 3\&.3 tklib "Ctext a text widget with highlighting support"
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.SH "STANDARD OPTIONS"
.LP
.nf
.ta 5.5c 11c
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.LP
See the \\*(So manual entry for details on the standard options.
..
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.de OP
.LP
.nf
.ta 4c
Command-Line Name:	\\fB\\$1\\fR
Database Name:	\\fB\\$2\\fR
Database Class:	\\fB\\$3\\fR
.fi
.IP
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.BS
.SH NAME
ctext \- Ctext a text widget with highlighting support
.SH SYNOPSIS
package require \fBTk \fR
.sp
package require \fBctext  ?3\&.3?\fR
.sp
\fBctext\fR \fIpathName\fR ?\fIoptions\fR?
.sp
\fB::ctext::addHighlightClass\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIkeywordlist\fR
.sp
\fB::ctext::addHighlightClassWithOnlyCharStart\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIchar\fR
.sp
\fB::ctext::addHighlightClassForSpecialChars\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIcharstring\fR
.sp
\fB::ctext::addHighlightClassForRegexp\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIpattern\fR
.sp
\fB::ctext::clearHighlightClasses\fR \fIpathName\fR
.sp
\fB::ctext::getHighlightClasses\fR \fIpathName\fR
.sp
\fB::ctext::deleteHighlightClass\fR \fIpathName\fR \fIclass\fR
.sp
\fB::ctext::enableComments\fR \fIenable\fR
.sp
\fB::ctext::disableComments\fR \fIenable\fR
.sp
\fIpathName\fR \fBhighlight\fR \fIstartIndex\fR \fIendIndex\fR
.sp
\fIpathName\fR \fBfastdelete\fR \fIindex1\fR ?\fIindex2\fR?
.sp
\fIpathName\fR \fBfastinsert\fR
.sp
\fIpathName\fR \fBcopy\fR
.sp
\fIpathName\fR \fBcut\fR
.sp
\fIpathName\fR \fBpaste\fR
.sp
\fIpathName\fR \fBappend\fR
.sp
\fIpathName\fR \fBconfigure\fR \fIoption\fR \fIvalue\fR ?\&.\&.\&.?
.sp
.BE
.SH DESCRIPTION
The \fBctext\fR package provides the ctext widget which
is an enhanced text widget with support for configurable syntax
highlighting and some extra commands\&.
.PP
Ctext overloads the text widget and provides
new commands, named \fBhighlight\fR, \fBcopy\fR, \fBpaste\fR,\fBcut\fR,
\fBappend\fR, and \fBedit\fR\&.  It also provides several
commands that allow you to define classes\&.
Each class corresponds to a tag in the widget\&.
.SH COMMANDS
.TP
\fBctext\fR \fIpathName\fR ?\fIoptions\fR?
Creates and configures a ctext widget\&.
.PP
.SH HIGHLIGHTING
Highlighting is controlled with text widget tags, that are called highlight classes\&.
The \fIclass\fR 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 \fBhighlight\fR method of the widget\&.
.TP
\fB::ctext::addHighlightClass\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIkeywordlist\fR
Add a highlighting class \fIclass\fR to the ctext widget \fIpathName\fR\&.
The highlighting will be done with the color \fIcolor\fR\&. All words in the \fIkeywordlist\fR will be
highlighted\&.
.CS


	# highlight some tcl keywords
	::ctext::addHighlightClass \&.t tclkeywords red [list set info interp uplevel upvar]

.CE
.TP
\fB::ctext::addHighlightClassWithOnlyCharStart\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIchar\fR
Add a highlighting class \fIclass\fR to the ctext widget \fIpathName\fR\&.
The highlighting will be done with the color \fIcolor\fR\&. All words starting with \fIchar\fR will be
highlighted\&.
.CS


	::ctext::addHighlightClassWithOnlyCharStart \&.t vars blue \\$

.CE
.TP
\fB::ctext::addHighlightClassForSpecialChars\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIcharstring\fR
Add a highlighting class \fIclass\fR to the ctext widget \fIpathName\fR\&.
The highlighting will be done with the color \fIcolor\fR\&. All chars in \fIcharstring\fR will be
highlighted\&.
.TP
\fB::ctext::addHighlightClassForRegexp\fR \fIpathName\fR \fIclass\fR \fIcolor\fR \fIpattern\fR
Add a highlighting class \fIclass\fR to the ctext widget \fIpathName\fR\&.
The highlighting will be done with the color \fIcolor\fR\&. All text parts matching the regexp \fIpattern\fR
will be highlighted\&.
.TP
\fB::ctext::clearHighlightClasses\fR \fIpathName\fR
Remove all highlight classes from the widget \fIpathName\fR\&.
.TP
\fB::ctext::getHighlightClasses\fR \fIpathName\fR
List all highlight classes for the widget \fIpathName\fR\&.
.TP
\fB::ctext::deleteHighlightClass\fR \fIpathName\fR \fIclass\fR
Delete the highlight class \fIclass\fR from the widget \fIpathName\fR
.TP
\fB::ctext::enableComments\fR \fIenable\fR
Enable C comment highlighting\&. The \fIclass\fR for c-style comments is \fB_cComment\fR\&.
The C comment highlighting is disabled by default\&.
.TP
\fB::ctext::disableComments\fR \fIenable\fR
Disable C comment highlighting\&.
.PP
.SH "WIDGET COMMANDS"
Each ctext widget created with the above command supports the following
commands and options in addition to the standard text widget commands and
options\&.
.TP
\fIpathName\fR \fBhighlight\fR \fIstartIndex\fR \fIendIndex\fR
Highlight the text between \fIstartIndex\fR and \fIendIndex\fR\&.
.TP
\fIpathName\fR \fBfastdelete\fR \fIindex1\fR ?\fIindex2\fR?
Delete text range without updating the highlighting\&. Arguments
are identical to the \fIpathName\fR \fBdelete\fR command inherited from
the standard text widget\&.
.TP
\fIpathName\fR \fBfastinsert\fR
Insert text without updating the highlighting\&. Arguments
are identical to the \fIpathName\fR \fBinsert\fR command inherited from
the standard text widget\&.
.TP
\fIpathName\fR \fBcopy\fR
Call \fBtk_textCopy\fR for the ctext instance\&.
.TP
\fIpathName\fR \fBcut\fR
Call \fBtk_textCut\fR for the ctext instance\&.
.TP
\fIpathName\fR \fBpaste\fR
Call \fBtk_textPaste\fR for the ctext instance\&.
.TP
\fIpathName\fR \fBappend\fR
Append the current selection to the clipboard\&.
.TP
\fIpathName\fR \fBconfigure\fR \fIoption\fR \fIvalue\fR ?\&.\&.\&.?
Set the options for the ctext widget\&. Each option name must be followed
the new value\&.
.PP
.SH "WIDGET OPTIONS"
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemap\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
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\&.
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemapfg\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Changes the foreground of the linemap\&.
The default is the same color as the main text
widget\&.
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemapbg\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Changes the background of the linemap\&.
The default is the same color as the main text
widget\&.
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemap_select_fg\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Changes the selected
line foreground\&.  The default is black\&.
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemap_select_bg\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Changes the selected line
background\&.  The default is yellow\&.
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemap_mark_command\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Calls a procedure or command
with the \fIpathName\fR of the ctext window, the \fItype\fR which is
either \fBmarked\fR or \fBunmarked\fR, and finally the line
number selected\&.
The proc prototype is:
.CS


proc linemark_cmd {win type line}\&.

.CE
.IP
See also
ctext_test_interactive\&.tcl
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-highlight\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Takes a boolean value which defines
whether or not to highlight text which is inserted
or deleted\&.  The default is 1\&.
.LP
.nf
.ta 6c
Command-Line Switch:	\fB-linemap_markable\fR
Database Name:	\fB\fR
Database Class:	\fB\fR

.fi
.IP
Takes a boolean value which
specifies whether or not lines in the linemap
are markable with the mouse\&.  The default is 1\&.
.PP
.SH EXAMPLE
.CS


	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


.CE
Further examples are in the source package for ctext\&.
.SH THANKS
Kevin Kenny, Neil Madden, Jeffrey Hobbs, Richard Suchenwirth,
Johan Bengtsson, Mac Cody, Günther, Andreas Sievers, and Michael Schlenker\&.
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIctext\fR of the
\fITklib Trackers\fR [http://core\&.tcl\&.tk/tklib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.SH "SEE ALSO"
re_syntax, text
.SH KEYWORDS
syntax highlighting, text, widget
.SH COPYRIGHT
.nf
Copyright (c) George Peter Staplin <GeorgePS@XMission\&.com>

.fi
