qt-material-widgets/lib/transparencyproxy.h

#ifndef TRANSPARENCYPROXY_H
#define TRANSPARENCYPROXY_H

#include <QStackedLayout>

class QWidget;
class TransparencyProxyPrivate;

class TransparencyProxy : public QStackedLayout
{
    Q_OBJECT

    Q_PROPERTY(qreal opacity WRITE setOpacity READ opacity NOTIFY opacityChanged)

public:
    TransparencyProxy();
    ~TransparencyProxy();

    void setWidget(QWidget *widget);

    void setOpaque();
    void setOpacity(qreal opacity);
    qreal opacity() const;

signals:
    void opacityChanged();

protected:
    const QScopedPointer<TransparencyProxyPrivate> d_ptr;

private:
    Q_DISABLE_COPY(TransparencyProxy)
    Q_DECLARE_PRIVATE(TransparencyProxy)
};

#endif // TRANSPARENCYPROXY_H