Curses::Widgets::TextMemo - Text Memo Widgets

$Id: TextMemo.pm,v 1.104 2002/11/14 01:27:31 corliss Exp corliss $

  use Curses::Widgets::TextMemo;

  $tm = Curses::Widgets::TextMemo->new({
    CAPTION       => 'Memo',
    CAPTIONCOL    => 'blue',
    COLUMNS       => 10,
    MAXLENGTH     => undef,
    LINES         => 3,
    MASK          => undef,
    VALUE         => '',
    INPUTFUNC     => \&scankey,
    FOREGROUND    => 'white',
    BACKGROUND    => 'black',
    BORDER        => 1,
    BORDERCOL     => 'red',
    FOCUSSWITCH   => "\t",
    CURSORPOS     => 0,
    TEXTSTART     => 0,
    PASSWORD      => 0,
    X             => 1,
    Y             => 1,
    READONLY      => 0,
    });

  $tm->draw($mwh, 1);

  See the Curses::Widgets pod for other methods.

Curses

Curses::Widgets

Curses::Widgets::TextMemo provides simplified OO access to Curses-based single line text fields. Each object maintains its own state information.

  $tm = Curses::Widgets::TextMemo->new({
    CAPTION       => 'Memo',
    CAPTIONCOL    => 'blue',
    COLUMNS       => 10,
    MAXLENGTH     => undef,
    LINES         => 3,
    MASK          => undef,
    VALUE         => '',
    INPUTFUNC     => \&scankey,
    FOREGROUND    => 'white',
    BACKGROUND    => 'black',
    BORDER        => 1,
    BORDERCOL     => 'red',
    FOCUSSWITCH   => "\t",
    CURSORPOS     => 0,
    TEXTSTART     => 0,
    PASSWORD      => 0,
    X             => 1,
    Y             => 1,
    READONLY      => 0,
    });

The new method instantiates a new TextMemo object. The only mandatory key/value pairs in the configuration hash are X and Y. All others have the following defaults:

  Key           Default   Description
  ============================================================
  CAPTION         undef   Caption superimposed on border
  CAPTIONCOL      undef   Foreground colour for caption text
  COLUMNS            10   Number of columns displayed
  MAXLENGTH       undef   Maximum string length allowed
  LINES               3   Number of lines in the window
  VALUE              ''   Current field text
  INPUTFUNC   \&scankey   Function to use to scan for keystrokes
  FOREGROUND      undef   Default foreground colour
  BACKGROUND      undef   Default background colour
  BORDER              1   Display a border around the field
  BORDERCOL       undef   Foreground colour for border
  FOCUSSWITCH      "\t"   Characters which signify end of input
  CURSORPOS           0   Starting position of the cursor
  TEXTSTART           0   Line number of string to start 
                          displaying
  PASSWORD            0   Subsitutes '*' instead of characters
  READONLY            0   Prevents alteration to content

The CAPTION is only valid when the BORDER is enabled. If the border is disabled, the field will be underlined, provided the terminal supports it. The MAXLENGTH has no effect if left undefined.

  $tm->draw($mwh, 1);

The draw method renders the text memo in its current state. This requires a valid handle to a curses window in which it will render itself. The optional second argument, if true, will cause the field's text cursor to be rendered as well.

1999/12/29 Original text field widget in functional model

2001/07/05 First incarnation in OO architecture

(c) 2001 Arthur Corliss (corliss@digitalmages.com)