Initial revision

1 files changed, 47 insertions, 0 deletions

diff --git a/library/demos/hscale.tcl b/library/demos/hscale.tcl
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+# hscale.tcl --
+#
+# This demonstration script shows an example with a horizontal scale.
+#
+# SCCS: @(#) hscale.tcl 1.4 97/03/02 16:24:01
+
+if {![info exists widgetDemo]} {
+    error "This script should be run from the \"widget\" demo."
+}
+
+set w .hscale
+catch {destroy $w}
+toplevel $w
+wm title $w "Horizontal Scale Demonstration"
+wm iconname $w "hscale"
+positionWindow $w
+
+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."
+pack $w.msg -side top -padx .5c
+
+frame $w.buttons
+pack $w.buttons -side bottom -fill x -pady 2m
+button $w.buttons.dismiss -text Dismiss -command "destroy $w"
+button $w.buttons.code -text "See Code" -command "showCode $w"
+pack $w.buttons.dismiss $w.buttons.code -side left -expand 1
+
+frame $w.frame -borderwidth 10
+pack $w.frame -side top -fill x
+
+canvas $w.frame.canvas -width 50 -height 50 -bd 0 -highlightthickness 0
+$w.frame.canvas create polygon 0 0 1 1 2 2 -fill DeepSkyBlue3 -tags poly
+$w.frame.canvas create line 0 0 1 1 2 2 0 0 -fill black -tags line
+scale $w.frame.scale -orient horizontal -length 284 -from 0 -to 250 \
+	-command "setWidth $w.frame.canvas" -tickinterval 50
+pack $w.frame.canvas -side top -expand yes -anchor s -fill x  -padx 15
+pack $w.frame.scale -side bottom -expand yes -anchor n
+$w.frame.scale set 75
+
+proc setWidth {w width} {
+    incr width 21
+    set x2 [expr $width - 30]
+    if {$x2 < 21} {
+	set x2 21
+    }
+    $w coords poly 20 15 20 35 $x2 35 $x2 45 $width 25 $x2 5 $x2 15 20 15
+    $w coords line 20 15 20 35 $x2 35 $x2 45 $width 25 $x2 5 $x2 15 20 15
+}