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feedback - Create and manipulate a feedback widget to display feedback on the current status of an ongoing operation to the user.

Synopsis

feedback pathName ?options?

Inheritance

itk::Widget <- Labeledwidget <- Feedback

Standard Options

background cursor foreground highlightColor highlightThickness

See the «options» manual entry for details on the standard

options.

Inherited Options

labelBitmap labelFont labelImage labelMargin

labelPos
labelText labelVariable

See the «labeledwidget» class manual entry for details on the

inherited options.

Widget-specific Options

Name: barcolor

Class: BarColor

Command-Line Switch: -barcolor

Specifies the color of the status bar, in any of the forms

acceptable to Tk_GetColor. The default is DodgerBlue.

Name: barheight

Class: BarHeight

Command-Line Switch: -barheight

Specifies the height of the status bar, in any of the forms

acceptable to Tk_GetPixels. The default is 20.

Name: troughColor

Class: TroughColor

Command-Line Switch: -troughcolor

Specifies the color of the frame in which the status bar sits, in

any of the forms acceptable to Tk_GetColor. The default is white.

Name: steps

Class: Steps

Command-Line Switch: -steps

Specifies the total number of steps for the status bar. The

default is 10.

Description

The feedback command creates a widget to display feedback on the

current status of an ongoing operation to the user. Display is given as a percentage and as a thermometer type bar. Options exist for adding a label and controlling its position.

Methods

The feedback command creates a new Tcl command whose name is

pathName. This command may be used to invoke various operations on the widget. It has the following general form:

pathName option ?arg arg ...?

Option and the args determine the exact behavior of the command.

The following commands are possible for scrolledtext widgets:

Widget-specific Methods

pathName cget option

Returns the current value of the configuration option given by

option. Option may have any of the values accepted by the scrolledhtml command.
pathName configure ?option? ?value option value ...?

Query or modify the configuration options of the widget. If no

option is specified, returns a list describing all of the available options for pathName (see Tk_ConfigureInfo for informa- tion on the format of this list). If option is specified with no value, then the command returns a list describing the one named option (this list will be identical to the corresponding sublist of the value returned if no option is specified). If one or more option-value pairs are specified, then the command modifies the given widget option(s) to have the given value(s); in this case the command returns an empty string. Option may have any of the values accepted by the feedback command.
pathName reset

Reset the current number of steps completed to 0, and configures

the percentage complete label text to 0%
pathName step ?inc?

Increase the current number of steps completed by the amount

specified by inc. Inc defaults to 1.

Example

feedback .fb -labeltext «Status» -steps 20
pack .fb -padx 10 -pady 10 -fill both -expand yes

for {set i 0} {$i < 20} {incr i} {
.fb step
after 500
}

Acknowledgements

Sam Shen

This code is based largely on his feedback.tcl code from tk

inspect. The original feedback code is copyright 1995 Lawrence

Berkeley Laboratory.

Author

Kris Raney

Keywords

feedback, widget

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