diff options
Diffstat (limited to 'tk8.6/library/demos/vscale.tcl')
-rw-r--r-- | tk8.6/library/demos/vscale.tcl | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/tk8.6/library/demos/vscale.tcl b/tk8.6/library/demos/vscale.tcl new file mode 100644 index 0000000..2c7ea76 --- /dev/null +++ b/tk8.6/library/demos/vscale.tcl @@ -0,0 +1,46 @@ +# vscale.tcl -- +# +# This demonstration script shows an example with a vertical scale. + +if {![info exists widgetDemo]} { + error "This script should be run from the \"widget\" demo." +} + +package require Tk + +set w .vscale +catch {destroy $w} +toplevel $w +wm title $w "Vertical Scale Demonstration" +wm iconname $w "vscale" +positionWindow $w + +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." +pack $w.msg -side top -padx .5c + +## See Code / Dismiss buttons +set btns [addSeeDismiss $w.buttons $w] +pack $btns -side bottom -fill x + +frame $w.frame -borderwidth 10 +pack $w.frame + +scale $w.frame.scale -orient vertical -length 284 -from 0 -to 250 \ + -command "setHeight $w.frame.canvas" -tickinterval 50 +canvas $w.frame.canvas -width 50 -height 50 -bd 0 -highlightthickness 0 +$w.frame.canvas create polygon 0 0 1 1 2 2 -fill SeaGreen3 -tags poly +$w.frame.canvas create line 0 0 1 1 2 2 0 0 -fill black -tags line +frame $w.frame.right -borderwidth 15 +pack $w.frame.scale -side left -anchor ne +pack $w.frame.canvas -side left -anchor nw -fill y +$w.frame.scale set 75 + +proc setHeight {w height} { + incr height 21 + set y2 [expr {$height - 30}] + if {$y2 < 21} { + set y2 21 + } + $w coords poly 15 20 35 20 35 $y2 45 $y2 25 $height 5 $y2 15 $y2 15 20 + $w coords line 15 20 35 20 35 $y2 45 $y2 25 $height 5 $y2 15 $y2 15 20 +} |