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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
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of Qt Designer. This header
// file may change from version to version without notice, or even be removed.
//
// We mean it.
//
#ifndef SPACER_WIDGET_H
#define SPACER_WIDGET_H
#include "shared_global_p.h"
#include <QtWidgets/qwidget.h>
#include <QtWidgets/qsizepolicy.h>
QT_BEGIN_NAMESPACE
class QDesignerFormWindowInterface;
class QDESIGNER_SHARED_EXPORT Spacer: public QWidget
{
Q_OBJECT
// Special hack: Make name appear as "spacer name"
Q_PROPERTY(QString spacerName READ objectName WRITE setObjectName)
Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
Q_PROPERTY(QSizePolicy::Policy sizeType READ sizeType WRITE setSizeType)
Q_PROPERTY(QSize sizeHint READ sizeHintProperty WRITE setSizeHintProperty DESIGNABLE true STORED true)
public:
Spacer(QWidget *parent = nullptr);
QSize sizeHint() const override;
QSize sizeHintProperty() const;
void setSizeHintProperty(const QSize &s);
QSizePolicy::Policy sizeType() const;
void setSizeType(QSizePolicy::Policy t);
Qt::Alignment alignment() const;
Qt::Orientation orientation() const;
void setOrientation(Qt::Orientation o);
void setInteractiveMode(bool b) { m_interactive = b; };
bool event(QEvent *e) override;
protected:
void paintEvent(QPaintEvent *e) override;
void resizeEvent(QResizeEvent* e) override;
void updateMask();
private:
bool isInLayout() const;
void updateToolTip();
const QSize m_SizeOffset = QSize(3, 3); // A small offset to ensure the spacer is still visible when reset to size 0,0
QDesignerFormWindowInterface *m_formWindow;
Qt::Orientation m_orientation = Qt::Vertical;
bool m_interactive = true;
// Cache information about 'being in layout' which is expensive to calculate.
enum LayoutState { InLayout, OutsideLayout, UnknownLayoutState };
mutable LayoutState m_layoutState = UnknownLayoutState;
QSize m_sizeHint = QSize(0, 0);
};
QT_END_NAMESPACE
#endif // SPACER_WIDGET_H
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