| 1 | # vscale.tcl -- |
| 2 | # |
| 3 | # This demonstration script shows an example with a vertical scale. |
| 4 | # |
| 5 | # RCS: @(#) $Id: vscale.tcl,v 1.3 2001/06/14 10:56:58 dkf Exp $ |
| 6 | |
| 7 | if {![info exists widgetDemo]} { |
| 8 | error "This script should be run from the \"widget\" demo." |
| 9 | } |
| 10 | |
| 11 | set w .vscale |
| 12 | catch {destroy $w} |
| 13 | toplevel $w |
| 14 | wm title $w "Vertical Scale Demonstration" |
| 15 | wm iconname $w "vscale" |
| 16 | positionWindow $w |
| 17 | |
| 18 | label $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." |
| 19 | pack $w.msg -side top -padx .5c |
| 20 | |
| 21 | frame $w.buttons |
| 22 | pack $w.buttons -side bottom -fill x -pady 2m |
| 23 | button $w.buttons.dismiss -text Dismiss -command "destroy $w" |
| 24 | button $w.buttons.code -text "See Code" -command "showCode $w" |
| 25 | pack $w.buttons.dismiss $w.buttons.code -side left -expand 1 |
| 26 | |
| 27 | frame $w.frame -borderwidth 10 |
| 28 | pack $w.frame |
| 29 | |
| 30 | scale $w.frame.scale -orient vertical -length 284 -from 0 -to 250 \ |
| 31 | -command "setHeight $w.frame.canvas" -tickinterval 50 |
| 32 | canvas $w.frame.canvas -width 50 -height 50 -bd 0 -highlightthickness 0 |
| 33 | $w.frame.canvas create polygon 0 0 1 1 2 2 -fill SeaGreen3 -tags poly |
| 34 | $w.frame.canvas create line 0 0 1 1 2 2 0 0 -fill black -tags line |
| 35 | frame $w.frame.right -borderwidth 15 |
| 36 | pack $w.frame.scale -side left -anchor ne |
| 37 | pack $w.frame.canvas -side left -anchor nw -fill y |
| 38 | $w.frame.scale set 75 |
| 39 | |
| 40 | proc setHeight {w height} { |
| 41 | incr height 21 |
| 42 | set y2 [expr {$height - 30}] |
| 43 | if {$y2 < 21} { |
| 44 | set y2 21 |
| 45 | } |
| 46 | $w coords poly 15 20 35 20 35 $y2 45 $y2 25 $height 5 $y2 15 $y2 15 20 |
| 47 | $w coords line 15 20 35 20 35 $y2 45 $y2 25 $height 5 $y2 15 $y2 15 20 |
| 48 | } |