- Qt 5.5
- Qt Widgets
- Sliders Example
- slidersgroup.cpp Example File
- Qt 5.5.1 Reference Documentation

# slidersgroup.cpp Example File

widgets/sliders/slidersgroup.cpp

    /****************************************************************************
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    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
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    #include <QtWidgets>

    #include "slidersgroup.h"

    SlidersGroup::SlidersGroup(Qt::Orientation orientation, const QString &title,
                               QWidget *parent)
        : QGroupBox(title, parent)
    {
        slider = new QSlider(orientation);
        slider->setFocusPolicy(Qt::StrongFocus);
        slider->setTickPosition(QSlider::TicksBothSides);
        slider->setTickInterval(10);
        slider->setSingleStep(1);

        scrollBar = new QScrollBar(orientation);
        scrollBar->setFocusPolicy(Qt::StrongFocus);

        dial = new QDial;
        dial->setFocusPolicy(Qt::StrongFocus);

        connect(slider, SIGNAL(valueChanged(int)), scrollBar, SLOT(setValue(int)));
        connect(scrollBar, SIGNAL(valueChanged(int)), dial, SLOT(setValue(int)));
        connect(dial, SIGNAL(valueChanged(int)), slider, SLOT(setValue(int)));
        connect(dial, SIGNAL(valueChanged(int)), this, SIGNAL(valueChanged(int)));

        QBoxLayout::Direction direction;

        if (orientation == Qt::Horizontal)
            direction = QBoxLayout::TopToBottom;
        else
            direction = QBoxLayout::LeftToRight;

        QBoxLayout *slidersLayout = new QBoxLayout(direction);
        slidersLayout->addWidget(slider);
        slidersLayout->addWidget(scrollBar);
        slidersLayout->addWidget(dial);
        setLayout(slidersLayout);
    }

    void SlidersGroup::setValue(int value)
    {
        slider->setValue(value);
    }

    void SlidersGroup::setMinimum(int value)
    {
        slider->setMinimum(value);
        scrollBar->setMinimum(value);
        dial->setMinimum(value);
    }

    void SlidersGroup::setMaximum(int value)
    {
        slider->setMaximum(value);
        scrollBar->setMaximum(value);
        dial->setMaximum(value);
    }

    void SlidersGroup::invertAppearance(bool invert)
    {
        slider->setInvertedAppearance(invert);
        scrollBar->setInvertedAppearance(invert);
        dial->setInvertedAppearance(invert);
    }

    void SlidersGroup::invertKeyBindings(bool invert)
    {
        slider->setInvertedControls(invert);
        scrollBar->setInvertedControls(invert);
        dial->setInvertedControls(invert);
    }