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# Code for Sliders Example

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    package com.trolltech.examples;

    import com.trolltech.qt.core.*;
    import com.trolltech.qt.gui.*;

    @QtJambiExample(name = "Sliders")
    public class Sliders extends QWidget
    {
        private SlidersGroup horizontalSliders;
        private SlidersGroup verticalSliders;
        private QStackedWidget stackedWidget;

        private QGroupBox controlsGroup;
        private QLabel minimumLabel;
        private QLabel maximumLabel;
        private QLabel valueLabel;
        private QCheckBox invertedAppearance;
        private QCheckBox invertedKeyBindings;
        private QSpinBox minimumSpinBox;
        private QSpinBox maximumSpinBox;
        private QSpinBox valueSpinBox;
        private QComboBox orientationCombo;

        public Sliders()
        {
            horizontalSliders = new SlidersGroup(Qt.Orientation.Horizontal, tr("Horizontal"));
            verticalSliders = new SlidersGroup(Qt.Orientation.Vertical, tr("Vertical"));

            stackedWidget = new QStackedWidget();
            stackedWidget.addWidget(horizontalSliders);
            stackedWidget.addWidget(verticalSliders);

            createControls(tr("Controls"));

            horizontalSliders.valueChanged.connect(verticalSliders, "setValue(int)");
            verticalSliders.valueChanged.connect(valueSpinBox, "setValue(int)");
            valueSpinBox.valueChanged.connect(horizontalSliders, "setValue(int)");

            QHBoxLayout layout = new QHBoxLayout();
            layout.addWidget(controlsGroup);
            layout.addWidget(stackedWidget);
            setLayout(layout);

            minimumSpinBox.setValue(0);
            maximumSpinBox.setValue(20);
            valueSpinBox.setValue(5);

            setWindowTitle(tr("Sliders"));
        }

        private void createControls(String title)
        {
            controlsGroup = new QGroupBox(title);

            minimumLabel = new QLabel(tr("Minimum value:"));
            maximumLabel = new QLabel(tr("Maximum value:"));
            valueLabel = new QLabel(tr("Current value:"));

            invertedAppearance = new QCheckBox(tr("Inverted appearance"));
            invertedKeyBindings = new QCheckBox(tr("Inverted key bindings"));

            minimumSpinBox = new QSpinBox();
            minimumSpinBox.setRange(-100, 100);
            minimumSpinBox.setSingleStep(1);

            maximumSpinBox = new QSpinBox();
            maximumSpinBox.setRange(-100, 100);
            maximumSpinBox.setSingleStep(1);

            valueSpinBox = new QSpinBox();
            valueSpinBox.setRange(-100, 100);
            valueSpinBox.setSingleStep(1);

            orientationCombo = new QComboBox();
            orientationCombo.addItem(tr("Horizontal slider-like widgets"));
            orientationCombo.addItem(tr("Vertical slider-like widgets"));

            orientationCombo.activatedIndex.connect(stackedWidget, "setCurrentIndex(int)");
            minimumSpinBox.valueChanged.connect(horizontalSliders, "setMinimum(int)");
            minimumSpinBox.valueChanged.connect(verticalSliders, "setMinimum(int)");
            maximumSpinBox.valueChanged.connect(horizontalSliders, "setMaximum(int)");
            maximumSpinBox.valueChanged.connect(verticalSliders, "setMaximum(int)");
            invertedAppearance.toggled.connect(horizontalSliders, "invertAppearance(boolean)");
            invertedAppearance.toggled.connect(verticalSliders, "invertAppearance(boolean)");
            invertedKeyBindings.toggled.connect(horizontalSliders, "invertedKeyBindings(boolean)");
            invertedKeyBindings.toggled.connect(verticalSliders, "invertedKeyBindings(boolean)");

            QGridLayout controlsLayout = new QGridLayout();
            controlsLayout.addWidget(minimumLabel, 0, 0);
            controlsLayout.addWidget(maximumLabel, 1, 0);
            controlsLayout.addWidget(valueLabel, 2, 0);
            controlsLayout.addWidget(minimumSpinBox, 0, 1);
            controlsLayout.addWidget(maximumSpinBox, 1, 1);
            controlsLayout.addWidget(valueSpinBox, 2, 1);
            controlsLayout.addWidget(invertedAppearance, 0, 2);
            controlsLayout.addWidget(invertedKeyBindings, 1, 2);
            controlsLayout.addWidget(orientationCombo, 3, 0, 1, 3);
            controlsGroup.setLayout(controlsLayout);
        }

        public static void main(String args[])
        {
            QApplication.initialize(args);

            new Sliders().show();

            QApplication.exec();
        }
    }

    class SlidersGroup extends QGroupBox
    {
        private QSlider slider;
        private QScrollBar scrollBar;
        private QDial dial;

        public Signal1<Integer> valueChanged = new Signal1<Integer>();

        public SlidersGroup(Qt.Orientation orientation, String title)
        {
            slider = new QSlider(orientation);
            slider.setFocusPolicy(Qt.FocusPolicy.StrongFocus);
            slider.setTickPosition(QSlider.TickPosition.TicksBothSides);
            slider.setTickInterval(10);
            slider.setSingleStep(1);

            scrollBar = new QScrollBar(orientation);
            scrollBar.setFocusPolicy(Qt.FocusPolicy.StrongFocus);

            dial = new QDial();
            dial.setFocusPolicy(Qt.FocusPolicy.StrongFocus);

            slider.valueChanged.connect(scrollBar, "setValue(int)");
            scrollBar.valueChanged.connect(dial, "setValue(int)");
            dial.valueChanged.connect(slider, "setValue(int)");
            dial.valueChanged.connect(valueChanged);

            QBoxLayout.Direction direction;

            if (orientation == Qt.Orientation.Horizontal)
                direction = QBoxLayout.Direction.TopToBottom;
            else
                direction = QBoxLayout.Direction.LeftToRight;

            QBoxLayout slidersLayout = new QBoxLayout(direction);
            slidersLayout.addWidget(slider);
            slidersLayout.addWidget(scrollBar);
            slidersLayout.addWidget(dial);
            setLayout(slidersLayout);
        }

        public void setValue(int value)
        {
            slider.setValue(value);
        }

        public void setMinimum(int value)
        {
            slider.setMinimum(value);
            scrollBar.setMinimum(value);
            dial.setMinimum(value);
        }

        public void setMaximum(int value)
        {
            slider.setMaximum(value);
            scrollBar.setMaximum(value);
            dial.setMaximum(value);
        }

        public void invertAppearance(boolean invert)
        {
            slider.setInvertedAppearance(invert);
            scrollBar.setInvertedAppearance(invert);
            dial.setInvertedAppearance(invert);
        }

        public void invertedKeyBindings(boolean invert)
        {
            slider.setInvertedControls(invert);
            scrollBar.setInvertedControls(invert);
            dial.setInvertedControls(invert);
        }
    }