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# piePeripheralLabeler(n) 6.6 tklib "piePeripheralLabeler class"

## Name

piePeripheralLabeler - tkpiechart pie peripheral style labeler class

## Synopsis

- stooop::new piePeripheralLabeler canvas ?options?
- switched::configure piePeripheralLabelerObject ?options?
- switched::cget piePeripheralLabelerObject option

## Description

The pie peripheral style labeler object is used as a slice label placer for a pie object and is passed to the pie constructor via its -labeler option (see the pie class manual).

The slice description text labels are arranged in 2 columns below the pie graphics, whereas the slice values are placed next to the slice and actually follow the slice as the pie is updated. Each description label text is placed to the right of a rectangle, the background color of which matches its corresponding slice. Each description label is actually a canvasLabel object.

There is no need to delete a piePeripheralLabeler object as it is automatically handled by the pie class.

stooop::new piePeripheralLabeler canvas ?options?

  Creates a piePeripheralLabeler object in the specified Tk canvas. The piePeripheralLabeler object identifier is returned (refered to as piePeripheralLabelerObject in this document).

switched::configure piePeripheralLabelerObject ?options?

  Configures a piePeripheralLabeler object or returns all the options with their current values if no options are passed as parameters.

switched::cget piePeripheralLabelerObject option

  Returns an option value for the specified piePeripheralLabeler object.

## OPTIONS

-font value

  Specifies a font for the slice labels. If not specified, the default font is system dependent.

-justify value

  Specifies how to justify labels within their own column. Must be one of left, center or right. Defaults to left. For example, if justification is right, all column labels right edges are aligned.

-offset value

  Specifies the distance between the pie graphics and the closest slice label. This value may be specified in any of the forms described in the canvas COORDINATES manual section.

-smallfont

  Specifies a font for the slice values. It is usually a small font in order to avoid values overlapping when 2 slices are very close to each other. If not specified, the description label font (-font option) is used.

-widestvaluetext

  Specifies a string of maximum width for slice values (placed around the pie next to the slices), so that enough room is allocated for these value labels when the pie width and height are set. It defaults to 00.0. For example, it could be set to "00.00 %".

## TAGS

The labeler has the following specific tag (see the canvas manual page ITEM IDS AND TAGS section for more information):

- piePeripheralLabeler(piePeripheralLabelerObject)

## Bugs, Ideas, Feedback

This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category tkpiechart of the Tklib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.

## See Also

canvasLabel, pie, pieBoxLabeler

## Keywords

canvas, labeler, pie, slice

## Copyright

Copyright © 1995-2004 Jean-Luc Fontaine <jfontain@free.fr>