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# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
#
# $Id: Meter.tcl,v 1.3 2001/12/09 05:04:02 idiscovery Exp $
#
# Meter.tcl --
#
# Implements the tixMeter widget
#
# Copyright (c) 1993-1999 Ioi Kim Lam.
# Copyright (c) 2000-2001 Tix Project Group.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
tixWidgetClass tixMeter {
-classname TixMeter
-superclass tixPrimitive
-method {
}
-flag {
-foreground -text -value
}
-configspec {
{-fillcolor fillColor FillColor #8080ff}
{-foreground foreground Foreground black}
{-text text Text ""}
{-value value Value 0}
}
-default {
{.relief sunken}
{.borderWidth 2}
{.width 150}
}
}
proc tixMeter:InitWidgetRec {w} {
upvar #0 $w data
global env
tixChainMethod $w InitWidgetRec
}
#----------------------------------------------------------------------
# Construct widget
#----------------------------------------------------------------------
proc tixMeter:ConstructWidget {w} {
upvar #0 $w data
tixChainMethod $w ConstructWidget
set data(w:canvas) [canvas $w.canvas]
pack $data(w:canvas) -expand yes -fill both
tixMeter:Update $w
}
proc tixMeter:SetBindings {w} {
upvar #0 $w data
tixChainMethod $w SetBindings
}
proc tixMeter:Update {w} {
upvar #0 $w data
# set the width of the canvas
set W [expr $data(-width)-\
([$data(w:root) cget -bd]+[$data(w:root) cget -highlightthickness]*2)]
$data(w:canvas) config -width $W
if {$data(-text) == ""} {
set text [format "%d%%" [expr int($data(-value)*100)]]
} else {
set text $data(-text)
}
# (Create/Modify) the text item.
#
if {![info exists data(text)]} {
set data(text) [$data(w:canvas) create text 0 0 -text $text]
} else {
$data(w:canvas) itemconfig $data(text) -text $text
}
set bbox [$data(w:canvas) bbox $data(text)]
set itemW [expr [lindex $bbox 2]-[lindex $bbox 0]]
set itemH [expr [lindex $bbox 3]-[lindex $bbox 1]]
$data(w:canvas) coord $data(text) [expr $W/2] [expr $itemH/2+4]
set H [expr $itemH + 4]
$data(w:canvas) config -height [expr $H]
set rectW [expr int($W*$data(-value))]
if {![info exists data(rect)]} {
set data(rect) [$data(w:canvas) create rectangle 0 0 $rectW 1000]
} else {
$data(w:canvas) coord $data(rect) 0 0 $rectW 1000
}
$data(w:canvas) itemconfig $data(rect) \
-fill $data(-fillcolor) -outline $data(-fillcolor)
$data(w:canvas) raise $data(text)
}
#----------------------------------------------------------------------
# Configuration
#----------------------------------------------------------------------
proc tixMeter:config-value {w value} {
upvar #0 $w data
set data(-value) $value
tixMeter:Update $w
}
proc tixMeter:config-text {w value} {
upvar #0 $w data
set data(-text) $value
tixMeter:Update $w
}
proc tixMeter:config-fillcolor {w value} {
upvar #0 $w data
set data(-fillcolor) $value
tixMeter:Update $w
}