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arduinisten
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#
# Feedback
# ----------------------------------------------------------------------
# Implements a Feedback widget, to display feedback on the status of an
# process 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.
#
# ----------------------------------------------------------------------
# AUTHOR: Kris Raney EMAIL: kraney@spd.dsccc.com
#
# @(#) $Id: feedback.itk,v 1.5 2001/08/15 18:32:18 smithc Exp $
# ----------------------------------------------------------------------
# Copyright (c) 1996 DSC Technologies Corporation
# ======================================================================
# Permission to use, copy, modify, distribute and license this software
# and its documentation for any purpose, and without fee or written
# agreement with DSC, is hereby granted, provided that the above copyright
# notice appears in all copies and that both the copyright notice and
# warranty disclaimer below appear in supporting documentation, and that
# the names of DSC Technologies Corporation or DSC Communications
# Corporation not be used in advertising or publicity pertaining to the
# software without specific, written prior permission.
#
# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL
# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
# SOFTWARE.
# ======================================================================
# Acknowledgements:
#
# Special thanks go to Sam Shen(SLShen@lbl.gov), as this code is based on his
# feedback.tcl code from tk inspect. The original code is copyright 1995
# Lawrence Berkeley Laboratory.
#
# This software is copyright (C) 1994 by the Lawrence Berkeley Laboratory.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that: (1) source code distributions
# retain the above copyright notice and this paragraph in its entirety, (2)
# distributions including binary code include the above copyright notice and
# this paragraph in its entirety in the documentation or other materials
# provided with the distribution, and (3) all advertising materials mentioning
# features or use of this software display the following acknowledgement:
# ``This product includes software developed by the University of California,
# Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
# the University nor the names of its contributors may be used to endorse
# or promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# Default resources.
#
option add *Feedback.borderWidth 2 widgetDefault
option add *Feedback.labelPos n widgetDefault
option add *Feedback.barHeight 20 widgetDefault
option add *Feedback.troughColor White widgetDefault
option add *Feedback.barColor Blue widgetDefault
#
# Usual options.
#
itk::usual Feedback {
keep -background -cursor -foreground
}
# ------------------------------------------------------------------
# FEEDBACK
# ------------------------------------------------------------------
itcl::class iwidgets::Feedback {
inherit iwidgets::Labeledwidget
constructor {args} {}
destructor {}
itk_option define -steps steps Steps 10
public {
method reset {}
method step {{inc 1}}
}
private {
method _display
variable _barwidth 0
variable _stepval 0
}
}
#
# Provide a lowercased access method for the Dialogshell class.
#
proc ::iwidgets::feedback {pathName args} {
uplevel ::iwidgets::Feedback $pathName $args
}
# ------------------------------------------------------------------
# CONSTRUCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Feedback::constructor {args} {
itk_component add trough {
frame $itk_interior.trough -relief sunken
} {
usual
keep -borderwidth
rename -background -troughcolor troughColor TroughColor
rename -height -barheight barHeight Height
}
itk_component add bar {
frame $itk_component(trough).bar -relief raised
} {
usual
keep -borderwidth
rename -background -barcolor barColor BarColor
rename -height -barheight barHeight Height
}
pack $itk_component(bar) -side left -fill y -anchor w
itk_component add percentage {
label $itk_interior.percentage -text "0%"
}
grid $itk_component(trough) -row 1 -column 0 -sticky sew -padx 2 -pady 2
grid $itk_component(percentage) -row 2 -column 0 -sticky nsew -padx 2 -pady 2
grid rowconfigure $itk_interior 0 -weight 1
grid rowconfigure $itk_interior 1 -weight 1
grid columnconfigure $itk_interior 0 -weight 1
bind $itk_component(hull) <Configure> [itcl::code $this _display]
eval itk_initialize $args
}
# ------------------------------------------------------------------
# DESTRUCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Feedback::destructor {} {
}
# ------------------------------------------------------------------
# OPTIONS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: -steps
#
# Set the total number of steps.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Feedback::steps {
step 0
}
# ------------------------------------------------------------------
# METHODS
# ------------------------------------------------------------------
# -----------------------------------------------------------------------------
# PROTECTED METHOD: _display
#
# Displays the bar in the trough with the width set using the current number
# of steps.
# -----------------------------------------------------------------------------
itcl::body iwidgets::Feedback::_display {} {
update idletasks
set troughwidth [winfo width $itk_component(trough)]
set _barwidth [expr {
(1.0*$troughwidth-(2.0*[$itk_component(trough) cget -borderwidth])) /
$itk_option(-steps)}]
set fraction [expr {int((1.0*$_stepval)/$itk_option(-steps)*100.0)}]
$itk_component(percentage) config -text "$fraction%"
$itk_component(bar) config -width [expr {$_barwidth*$_stepval}]
update
}
# ------------------------------------------------------------------
# METHOD: reset
#
# Resets the status bar to 0
# ------------------------------------------------------------------
itcl::body iwidgets::Feedback::reset {} {
set _stepval 0
_display
}
# ------------------------------------------------------------------
# METHOD: step ?inc?
#
# Increase the value of the status bar by inc. Default to 1
# ------------------------------------------------------------------
itcl::body iwidgets::Feedback::step {{inc 1}} {
if {$_stepval >= $itk_option(-steps)} {
return
}
incr _stepval $inc
_display
}