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ntext(n)                          Alternative Bindings for the Text Widget                          ntext(n)



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NAME
       ntext - Alternative Bindings for the Text Widget

SYNOPSIS
       package require Tcl  8.5

       package require Tk  8.5

       package require ntext  ?0.81?

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DESCRIPTION
       The  purpose  of  the  ntext  package  is to make the text widget behave more like other text-editing
       applications. It makes the text widget more useful for implementing  a  text  editor,  and  makes  it
       behave in a way that will be more familiar to most users.

       The  package  provides a binding tag named Ntext for use by text widgets in place of the default Text
       binding tag.

       Package ntext 's functions and variables are contained entirely in the ::ntext namespace;  its  other
       code  is contained in the binding tag Ntext.  ntext has no exports to the global or other namespaces,
       and no new widget commands.  It uses modified copies of the Tk code, leaving the original  code,  and
       the Text binding tag, unchanged.

       The  differences  between  the  Ntext binding tag and the default Text binding tag are in three cate-gories: categories:
       gories:

       •      Some Text bindings behave differently from most text-editing applications.  Ntext gives  these
              bindings more familiar behaviour.  For details see ntextBindings.

       •      When  a  logical line with leading whitespace is word-wrapped onto more than one display line,
              the wrapped display lines begin further to the left than the first  display  line,  which  can
              make  the  text  layout  untidy  and difficult to read.  Ntext can indent the wrapped lines to
              match the leading whitespace of the first display line  (this  facility  is  switched  off  by
              default).  For details see ntextIndent.

       •      When  the  user  navigates  or selects text, Tcl/Tk sometimes needs to detect word boundaries.
              Ntext provides improved rules for word boundary detection.  For details see ntextWordBreak.

       The remainder of this page describes the basic use and configuration of all three aspects  of  Ntext.
       For  more  detailed  information  on  the different facilities of Ntext, see the pages ntextBindings,
       ntextIndent, and ntextWordBreak.

       See Section EXAMPLE for how to apply the Ntext binding tag in place of the Text binding tag.

CONFIGURATION OPTIONS
       Ntext provides alternatives to a number of behaviours of the classic Text binding tag.   Where  there
       is an option, the Ntext behaviour (except for display-line indentation) is switched on by default.

       The behaviour of Ntext may be configured application-wide by setting the values of a number of names-pace namespace
       pace variables:

       ::ntext::classicAnchor

       •      0 - (default value) selects Ntext behaviour, i.e. the anchor point is fixed

       •      1 - selects classic Text behaviour, i.e. the anchor point is variable


       ::ntext::classicExtras

       •      0 - (default value) selects Ntext behaviour, i.e. several traditional Text  bindings  are  de-activated deactivated
              activated

       •      1 - selects classic Text behaviour, i.e. all Text bindings are activated


       ::ntext::classicMouseSelect

       •      0  - (default value) selects Ntext behaviour, i.e. the anchor point for mouse selection opera-tions operations
              tions is moved by keyboard navigation

       •      1 - selects classic Text behaviour


       ::ntext::classicWordBreak

       •      0 - (default value) selects Ntext behaviour, i.e. platform-independent, two  classes  of  word
              characters and one class of non-word characters.

       •      1  - selects classic Text behaviour, i.e. platform-dependent, one class of word characters and
              one class of non-word characters

       •      After changing this value, the matching patterns should be recalculated.   See  ntextWordBreak
              for details and advanced configuration options.


       ::ntext::classicWrap

       •      0  -  selects  Ntext  behaviour,  i.e.  display  lines  of text widgets in -wrap word mode are
              indented to match the initial whitespace of the first display line of a logical line.  If  the
              widget already holds text when this value is set, a function call may be necessary.  See ntex-tIndent ntextIndent
              tIndent for detailed instructions on the use of Ntext 's indentation.

       •      1 - (default value) selects classic Text behaviour, i.e. no indentation


       ::ntext::overwrite

       •      0 - (initial value) text typed at the keyboard is inserted into the widget

       •      1 - text typed at the keyboard overwrites text already in the widget

       •      The value is toggled by the Insert key.


EXAMPLE
       To create a text widget .t and use the Ntext bindings:

       package require ntext
       text .t
       bindtags .t {.t Ntext . all}

       See bindtags for more information.

SEE ALSO
       bindtags, ntextBindings, ntextIndent, ntextWordBreak, re_syntax, regexp, text

KEYWORDS
       bindtags, re_syntax, regexp, text



ntext                                               0.81                                            ntext(n)