require 'Qt' class LCDRange < Qt::VBox signals 'valueChanged(int)' slots 'setValue(int)', 'setRange(int, int)', 'setText(const char *)' def initialize(s, parent, name) super(parent, name) init() setText(s) end def init() lcd = Qt::LCDNumber.new(2, self, 'lcd') @slider = Qt::Slider.new(Qt::VBox::Horizontal, self, 'slider') @slider.setRange(0, 99) @slider.setValue(0) @label = Qt::Label.new( ' ', self, 'label' ) @label.setAlignment( Qt::AlignCenter ) connect(@slider, SIGNAL('valueChanged(int)'), lcd, SLOT('display(int)')) connect(@slider, SIGNAL('valueChanged(int)'), SIGNAL('valueChanged(int)')) setFocusProxy(@slider) end def value() @slider.value() end def setValue( value ) @slider.setValue( value ) end def setRange( minVal, maxVal ) if minVal < 0 || maxVal > 99 || minVal > maxVal qWarning( "LCDRange::setRange(#{minVal},#{maxVal})\n" + "\tRange must be 0..99\n" + "\tand minVal must not be greater than maxVal" ) return end @slider.setRange( minVal, maxVal ) end def setText( s ) @label.setText( s ) end end