Commit | Line | Data |
---|---|---|
920dae64 AT |
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 | } |