previewframe.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
#ifndef PREVIEWFRAME_H
#define PREVIEWFRAME_H
 
#include <QtWidgets/qframe.h>
#include <QtCore/qpointer.h>
 
QT_BEGIN_NAMESPACE
 
class QMdiArea;
class QMdiSubWindow;
 
namespace qdesigner_internal {
 
class PreviewFrame: public QFrame
{
    Q_OBJECT
public:
    explicit PreviewFrame(QWidget *parent);
 
    void setPreviewPalette(const QPalette &palette);
    void setSubWindowActive(bool active);
 
private:
    // The user can on some platforms close the mdi child by invoking the system menu.
    // Ensure a child is present.
    QMdiSubWindow *ensureMdiSubWindow();
    QMdiArea *m_mdiArea;
    QPointer<QMdiSubWindow> m_mdiSubWindow;
};
 
}  // namespace qdesigner_internal
 
QT_END_NAMESPACE
 
#endif