inplace_widget_helper.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 INPLACE_WIDGETHELPER_H
#define INPLACE_WIDGETHELPER_H
 
 
#include <QtCore/qobject.h>
#include <QtCore/qpoint.h>
#include <QtCore/qsize.h>
#include <QtCore/qpointer.h>
#include <qglobal.h>
 
QT_BEGIN_NAMESPACE
 
class QDesignerFormWindowInterface;
 
namespace qdesigner_internal {
 
    // A helper class to make an editor widget suitable for form inline
    // editing. Derive from the editor widget class and  make InPlaceWidgetHelper  a member.
    //
    // Sets "destructive close" on the editor widget and
    // wires "ESC" to it.
    // Installs an event filter on the parent to listen for
    // resize events and passes them on to the child.
    // You might want to connect editingFinished() to close() of the editor widget.
    class InPlaceWidgetHelper: public QObject
    {
        Q_OBJECT
    public:
        InPlaceWidgetHelper(QWidget *editorWidget, QWidget *parentWidget, QDesignerFormWindowInterface *fw);
        ~InPlaceWidgetHelper() override;
 
        bool eventFilter(QObject *object, QEvent *event) override;
 
        // returns a recommended alignment for the editor widget determined from the parent.
        Qt::Alignment alignment() const;
    private:
        QWidget *m_editorWidget;
        QPointer<QWidget> m_parentWidget;
        const bool m_noChildEvent;
        QPoint m_posOffset;
        QSize m_sizeOffset;
    };
 
}  // namespace qdesigner_internal
 
QT_END_NAMESPACE
 
#endif // INPLACE_WIDGETHELPER_H