1# vscale.tcl -- 2# 3# This demonstration script shows an example with a vertical scale. 4# 5# SCCS: @(#) vscale.tcl 1.3 96/02/16 10:49:51 6 7set w .vscale 8catch {destroy $w} 9toplevel $w 10wm title $w "Vertical Scale Demonstration" 11wm iconname $w "vscale" 12positionWindow $w 13 14label $w.msg -font $font -wraplength 3.5i -justify left -text "An arrow and a vertical scale are displayed below. If you click or drag mouse button 1 in the scale, you can change the size of the arrow." 15pack $w.msg -side top -padx .5c 16 17frame $w.buttons 18pack $w.buttons -side bottom -fill x -pady 2m 19button $w.buttons.dismiss -text Dismiss -command "destroy $w" 20button $w.buttons.code -text "See Code" -command "showCode $w" 21pack $w.buttons.dismiss $w.buttons.code -side left -expand 1 22 23frame $w.frame -borderwidth 10 24pack $w.frame 25 26scale $w.frame.scale -orient vertical -length 284 -from 0 -to 250 \ 27 -command "setHeight $w.frame.canvas" -tickinterval 50 28canvas $w.frame.canvas -width 50 -height 50 -bd 0 -highlightthickness 0 29$w.frame.canvas create polygon 0 0 1 1 2 2 -fill SeaGreen3 -tags poly 30$w.frame.canvas create line 0 0 1 1 2 2 0 0 -fill black -tags line 31frame $w.frame.right -borderwidth 15 32pack $w.frame.scale -side left -anchor ne 33pack $w.frame.canvas -side left -anchor nw -fill y 34$w.frame.scale set 75 35 36proc setHeight {w height} { 37 incr height 21 38 set y2 [expr $height - 30] 39 if {$y2 < 21} { 40 set y2 21 41 } 42 $w coords poly 15 20 35 20 35 $y2 45 $y2 25 $height 5 $y2 15 $y2 15 20 43 $w coords line 15 20 35 20 35 $y2 45 $y2 25 $height 5 $y2 15 $y2 15 20 44} 45