NAME¶
ctext - Ctext a text widget with highlighting support
SYNOPSIS¶
package require
Tk
package require
ctext ?3.3?
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 ?...?
DESCRIPTION¶
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.
COMMANDS¶
- ctext pathName ?options?
- Creates and configures a ctext widget.
HIGHLIGHTING¶
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.
- pathName highlight startIndex endIndex
- Highlight the text between startIndex and endIndex.
- pathName fastdelete index1 ?index2?
- Delete text range without updating the highlighting. Arguments are
identical to the pathName delete command inherited from the
standard text widget.
- pathName fastinsert
- Insert text without updating the highlighting. Arguments are identical to
the pathName insert command inherited from the standard text
widget.
- pathName copy
- Call tk_textCopy for the ctext instance.
- pathName cut
- Call tk_textCut for the ctext instance.
- pathName paste
- Call tk_textPaste for the ctext instance.
- pathName append
- Append the current selection to the clipboard.
- pathName configure option value ?...?
- 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.
EXAMPLE¶
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.
THANKS¶
Kevin Kenny, Neil Madden, Jeffrey Hobbs, Richard Suchenwirth, Johan Bengtsson,
Mac Cody, Günther, Andreas Sievers, and Michael Schlenker.
SEE ALSO¶
re_syntax, text
KEYWORDS¶
syntax highlighting, text, widget
COPYRIGHT¶
Copyright (c) George Peter Staplin <GeorgePS@XMission.com>