# This demonstration script shows an example with a horizontal scale.
# RCS: @(#) $Id: hscale.tcl,v 1.3 2001/06/14 10:56:58 dkf Exp $
if {![info exists widgetDemo
]} {
error "This script should be run from the \"widget\" demo."
wm title
$w "Horizontal Scale Demonstration"
label $w.msg
-font $font -wraplength 3.5i
-justify left
-text "An arrow and a horizontal scale are displayed below. If you click or drag mouse button 1 in the scale, you can change the length of the arrow."
pack $w.msg
-side top
-padx .5c
pack $w.buttons
-side bottom
-fill x
-pady 2m
button $w.buttons.dismiss
-text Dismiss
-command "destroy $w"
button $w.buttons.code
-text "See Code" -command "showCode $w"
pack $w.buttons.dismiss
$w.buttons.code
-side left
-expand 1
frame $w.
frame -borderwidth 10
pack $w.
frame -side top
-fill x
canvas $w.
frame.
canvas -width 50 -height 50 -bd 0 -highlightthickness 0
$w.
frame.
canvas create polygon
0 0 1 1 2 2 -fill DeepSkyBlue3
-tags poly
$w.
frame.
canvas create line
0 0 1 1 2 2 0 0 -fill black
-tags line
scale $w.
frame.
scale -orient horizontal
-length 284 -from 0 -to 250 \
-command "setWidth $w.frame.canvas" -tickinterval 50
pack $w.
frame.
canvas -side top
-expand yes
-anchor s
-fill x
-padx 15
pack $w.
frame.
scale -side bottom
-expand yes
-anchor n
proc setWidth
{w width
} {
set x2
[expr {$width - 30}]
$w coords poly
20 15 20 35 $x2 35 $x2 45 $width 25 $x2 5 $x2 15 20 15
$w coords line
20 15 20 35 $x2 35 $x2 45 $width 25 $x2 5 $x2 15 20 15