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Diffstat (limited to 'tix/demos/samples/Control.tcl')
-rw-r--r-- | tix/demos/samples/Control.tcl | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/tix/demos/samples/Control.tcl b/tix/demos/samples/Control.tcl new file mode 100644 index 00000000000..d0b09017d33 --- /dev/null +++ b/tix/demos/samples/Control.tcl @@ -0,0 +1,129 @@ +# Tix Demostration Program +# +# This sample program is structured in such a way so that it can be +# executed from the Tix demo program "widget": it must have a +# procedure called "RunSample". It should also have the "if" statment +# at the end of this file so that it can be run as a standalone +# program using tixwish. + +# This file demonstrates the use of the tixControl widget -- it is an +# entry widget with up/down arrow buttons. You can use the arrow buttons +# to adjust the value inside the entry widget. +# +# This example program uses three Control widgets. One lets you select +# integer values; one lets you select floating point values and the last +# one lets you select a few names. +# +proc RunSample {w} { + + # Create the tixControls on the top of the dialog box + # + frame $w.top -border 1 -relief raised + + # $w.top.a allows only integer values + # + # [Hint] The -options switch sets the options of the subwidgets. + # [Hint] We set the label.width subwidget option of the Controls to + # be 16 so that their labels appear to be aligned. + # + global demo_maker demo_thrust demo_num_engins + set demo_maker P&W + set demo_thrust 20000.0 + set demo_num_engins 2 + + + tixControl $w.top.a -label "Number of Engines: " -integer true \ + -variable demo_num_engins -min 1 -max 4\ + -options { + entry.width 10 + label.width 20 + label.anchor e + } + + tixControl $w.top.b -label "Thrust: " -integer false \ + -min 10000.0 -max 60000.0 -step 500\ + -variable demo_thrust \ + -options { + entry.width 10 + label.width 20 + label.anchor e + } + + tixControl $w.top.c -label "Engin Maker: " \ + -incrcmd "ctl:adjust_maker $w.top.c +1" \ + -decrcmd "ctl:adjust_maker $w.top.c -1" \ + -validatecmd "ctl:validate_maker $w.top.c" \ + -value "P&W" \ + -options { + entry.width 10 + label.width 20 + label.anchor e + } + + pack $w.top.a $w.top.b $w.top.c -side top -anchor w + + # Use a ButtonBox to hold the buttons. + # + tixButtonBox $w.box -orientation horizontal + $w.box add ok -text Ok -underline 0 -command "ctl:okcmd $w" \ + -width 6 + $w.box add cancel -text Cancel -underline 0 -command "destroy $w" \ + -width 6 + + pack $w.box -side bottom -fill x + pack $w.top -side top -fill both -expand yes +} + +set ctl_makers {GE P&W "Rolls Royce"} + +# This procedure gets called when the user presses the up/down arrow buttons. +# We return the "previous" or "next" engin maker according to the "$by" +# argument +# +proc ctl:adjust_maker {w by value} { + global ctl_makers + + set index [lsearch $ctl_makers $value] + set len [llength $ctl_makers] + set index [expr $index $by] + + if {$index < 0} { + set index [expr $len -1] + } + if {$index >= $len} { + set index 0 + } + + return [lindex $ctl_makers $index] +} + +proc ctl:validate_maker {w value} { + global ctl_makers + + if {[lsearch $ctl_makers $value] == -1} { + return [lindex $ctl_makers 0] + } else { + return $value + } +} + +proc ctl:okcmd {w} { + global demo_maker demo_thrust demo_num_engins + + puts "You selected $demo_num_engins engin(s) of thrust $demo_thrust made \ +by $demo_maker" + + destroy $w +} + + +# This "if" statement makes it possible to run this script file inside or +# outside of the main demo program "widget". +# +if {![info exists tix_demo_running]} { + wm withdraw . + set w .demo + toplevel $w + RunSample $w + bind $w <Destroy> exit +} |