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134 lines
3.5 KiB
134 lines
3.5 KiB
# -*-mode: tcl; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
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#
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# $Id: Control.tcl,v 1.3 2001/12/09 05:31:07 idiscovery Exp $
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#
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# Tix Demostration Program
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#
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# This sample program is structured in such a way so that it can be
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# executed from the Tix demo program "widget": it must have a
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# procedure called "RunSample". It should also have the "if" statment
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# at the end of this file so that it can be run as a standalone
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# program using tixwish.
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# This file demonstrates the use of the tixControl widget -- it is an
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# entry widget with up/down arrow buttons. You can use the arrow buttons
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# to adjust the value inside the entry widget.
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#
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# This example program uses three Control widgets. One lets you select
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# integer values; one lets you select floating point values and the last
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# one lets you select a few names.
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#
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proc RunSample {w} {
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# Create the tixControls on the top of the dialog box
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#
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frame $w.top -border 1 -relief raised
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# $w.top.a allows only integer values
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#
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# [Hint] The -options switch sets the options of the subwidgets.
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# [Hint] We set the label.width subwidget option of the Controls to
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# be 16 so that their labels appear to be aligned.
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#
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global demo_maker demo_thrust demo_num_engins
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set demo_maker P&W
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set demo_thrust 20000.0
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set demo_num_engins 2
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tixControl $w.top.a -label "Number of Engines: " -integer true \
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-variable demo_num_engins -min 1 -max 4\
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-options {
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entry.width 10
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label.width 20
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label.anchor e
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}
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tixControl $w.top.b -label "Thrust: " -integer false \
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-min 10000.0 -max 60000.0 -step 500\
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-variable demo_thrust \
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-options {
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entry.width 10
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label.width 20
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label.anchor e
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}
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tixControl $w.top.c -label "Engin Maker: " \
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-incrcmd "ctl:adjust_maker $w.top.c +1" \
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-decrcmd "ctl:adjust_maker $w.top.c -1" \
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-validatecmd "ctl:validate_maker $w.top.c" \
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-value "P&W" \
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-options {
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entry.width 10
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label.width 20
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label.anchor e
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}
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pack $w.top.a $w.top.b $w.top.c -side top -anchor w
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# Use a ButtonBox to hold the buttons.
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#
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tixButtonBox $w.box -orientation horizontal
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$w.box add ok -text Ok -underline 0 -command "ctl:okcmd $w" \
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-width 6
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$w.box add cancel -text Cancel -underline 0 -command "destroy $w" \
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-width 6
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pack $w.box -side bottom -fill x
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pack $w.top -side top -fill both -expand yes
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}
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set ctl_makers {GE P&W "Rolls Royce"}
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# This procedure gets called when the user presses the up/down arrow buttons.
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# We return the "previous" or "next" engin maker according to the "$by"
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# argument
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#
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proc ctl:adjust_maker {w by value} {
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global ctl_makers
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set index [lsearch $ctl_makers $value]
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set len [llength $ctl_makers]
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set index [expr $index $by]
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if {$index < 0} {
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set index [expr $len -1]
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}
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if {$index >= $len} {
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set index 0
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}
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return [lindex $ctl_makers $index]
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}
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proc ctl:validate_maker {w value} {
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global ctl_makers
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if {[lsearch $ctl_makers $value] == -1} {
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return [lindex $ctl_makers 0]
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} else {
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return $value
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}
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}
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proc ctl:okcmd {w} {
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global demo_maker demo_thrust demo_num_engins
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tixDemo:Status "You selected $demo_num_engins engin(s) of thrust $demo_thrust made \
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by $demo_maker"
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destroy $w
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}
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# This "if" statement makes it possible to run this script file inside or
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# outside of the main demo program "widget".
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#
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if {![info exists tix_demo_running]} {
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wm withdraw .
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set w .demo
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toplevel $w; wm transient $w ""
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RunSample $w
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bind $w <Destroy> exit
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}
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