mirror of
https://github.com/thestk/stk
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82 lines
2.1 KiB
Tcl
82 lines
2.1 KiB
Tcl
# A simple Tcl/Tk example script
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# Set initial control values
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set pitch 64.0
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set press 64.0
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# Configure main window
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wm title . "A Simple GUI"
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wm iconname . "simple"
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. config -bg black
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# Configure a "note-on" button
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frame .noteOn -bg black
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button .noteOn.on -text NoteOn -bg grey66 -command { noteOn $pitch $press }
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pack .noteOn.on -side left -padx 5
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pack .noteOn
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# Configure sliders
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frame .slider -bg black
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scale .slider.pitch -from 0 -to 128 -length 200 \
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-command {changePitch } -variable pitch \
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-orient horizontal -label "MIDI Note Number" \
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-tickinterval 32 -showvalue true -bg grey66
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pack .slider.pitch -padx 10 -pady 10
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pack .slider -side left
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# Bind an X windows "close" event with the Exit routine
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bind . <Destroy> +myExit
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proc myExit {} {
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global pitch outID
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puts [format "NoteOff 0.0 1 %f 127" $pitch ]
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flush stdout
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puts [format "ExitProgram"]
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flush stdout
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close stdout
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exit
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}
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proc noteOn {pitchVal pressVal} {
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puts [format "NoteOn 0.0 1 %f %f" $pitchVal $pressVal]
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flush stdout
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}
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proc changePitch {value} {
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puts [format "PitchChange 0.0 1 %.3f" $value]
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flush stdout
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}
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bind . <Configure> {+ center_the_toplevel %W }
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proc center_the_toplevel { w } {
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# Callback on the <Configure> event for a toplevel
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# that should be centered on the screen
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# Make sure that we aren't configuring a child window
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if { [string equal $w [winfo toplevel $w]] } {
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# Calculate the desired geometry
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set width [winfo reqwidth $w]
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set height [winfo reqheight $w]
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set x [expr { ( [winfo vrootwidth $w] - $width ) / 2 }]
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set y [expr { ( [winfo vrootheight $w] - $height ) / 2 }]
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#set y 0
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# Hand the geometry off to the window manager
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wm geometry $w ${width}x${height}+${x}+${y}
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# Unbind <Configure> so that this procedure is
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# not called again when the window manager finishes
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# centering the window. Also, revert geometry management
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# to internal default for subsequent size changes.
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bind $w <Configure> {}
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wm geometry $w ""
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}
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return
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}
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