[37] | 1 | # hscale.tcl -- |
---|
| 2 | # |
---|
| 3 | # This demonstration script shows an example with a horizontal scale. |
---|
| 4 | # |
---|
| 5 | # RCS: @(#) $Id: hscale.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 .hscale |
---|
| 12 | catch {destroy $w} |
---|
| 13 | toplevel $w |
---|
| 14 | wm title $w "Horizontal Scale Demonstration" |
---|
| 15 | wm iconname $w "hscale" |
---|
| 16 | positionWindow $w |
---|
| 17 | |
---|
| 18 | 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." |
---|
| 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 -side top -fill x |
---|
| 29 | |
---|
| 30 | canvas $w.frame.canvas -width 50 -height 50 -bd 0 -highlightthickness 0 |
---|
| 31 | $w.frame.canvas create polygon 0 0 1 1 2 2 -fill DeepSkyBlue3 -tags poly |
---|
| 32 | $w.frame.canvas create line 0 0 1 1 2 2 0 0 -fill black -tags line |
---|
| 33 | scale $w.frame.scale -orient horizontal -length 284 -from 0 -to 250 \ |
---|
| 34 | -command "setWidth $w.frame.canvas" -tickinterval 50 |
---|
| 35 | pack $w.frame.canvas -side top -expand yes -anchor s -fill x -padx 15 |
---|
| 36 | pack $w.frame.scale -side bottom -expand yes -anchor n |
---|
| 37 | $w.frame.scale set 75 |
---|
| 38 | |
---|
| 39 | proc setWidth {w width} { |
---|
| 40 | incr width 21 |
---|
| 41 | set x2 [expr {$width - 30}] |
---|
| 42 | if {$x2 < 21} { |
---|
| 43 | set x2 21 |
---|
| 44 | } |
---|
| 45 | $w coords poly 20 15 20 35 $x2 35 $x2 45 $width 25 $x2 5 $x2 15 20 15 |
---|
| 46 | $w coords line 20 15 20 35 $x2 35 $x2 45 $width 25 $x2 5 $x2 15 20 15 |
---|
| 47 | } |
---|