qgraphicslayoutitem.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
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- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
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- #ifndef QGRAPHICSLAYOUTITEM_H
- #define QGRAPHICSLAYOUTITEM_H
- #include <QtGui/qsizepolicy.h>
- #include <QtGui/qevent.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- #if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
- class QGraphicsLayoutItemPrivate;
- class Q_GUI_EXPORT QGraphicsLayoutItem
- {
- public:
- QGraphicsLayoutItem(QGraphicsLayoutItem *parent = 0, bool isLayout = false);
- virtual ~QGraphicsLayoutItem();
- void setSizePolicy(const QSizePolicy &policy);
- void setSizePolicy(QSizePolicy::Policy hPolicy, QSizePolicy::Policy vPolicy, QSizePolicy::ControlType controlType = QSizePolicy::DefaultType);
- QSizePolicy sizePolicy() const;
- void setMinimumSize(const QSizeF &size);
- inline void setMinimumSize(qreal w, qreal h);
- QSizeF minimumSize() const;
- void setMinimumWidth(qreal width);
- inline qreal minimumWidth() const;
- void setMinimumHeight(qreal height);
- inline qreal minimumHeight() const;
- void setPreferredSize(const QSizeF &size);
- inline void setPreferredSize(qreal w, qreal h);
- QSizeF preferredSize() const;
- void setPreferredWidth(qreal width);
- inline qreal preferredWidth() const;
- void setPreferredHeight(qreal height);
- inline qreal preferredHeight() const;
- void setMaximumSize(const QSizeF &size);
- inline void setMaximumSize(qreal w, qreal h);
- QSizeF maximumSize() const;
- void setMaximumWidth(qreal width);
- inline qreal maximumWidth() const;
- void setMaximumHeight(qreal height);
- inline qreal maximumHeight() const;
- virtual void setGeometry(const QRectF &rect);
- QRectF geometry() const;
- virtual void getContentsMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const;
- QRectF contentsRect() const;
- QSizeF effectiveSizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
- virtual void updateGeometry(); //### rename to sizeHintChanged()
- QGraphicsLayoutItem *parentLayoutItem() const;
- void setParentLayoutItem(QGraphicsLayoutItem *parent);
- bool isLayout() const;
- protected:
- QGraphicsLayoutItem(QGraphicsLayoutItemPrivate &dd);
- virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const = 0;
- QGraphicsLayoutItemPrivate *d_ptr;
- private:
- QSizeF *effectiveSizeHints(const QSizeF &constraint) const;
- Q_DECLARE_PRIVATE(QGraphicsLayoutItem)
- };
- inline void QGraphicsLayoutItem::setMinimumSize(qreal aw, qreal ah)
- { setMinimumSize(QSizeF(aw, ah)); }
- inline void QGraphicsLayoutItem::setPreferredSize(qreal aw, qreal ah)
- { setPreferredSize(QSizeF(aw, ah)); }
- inline void QGraphicsLayoutItem::setMaximumSize(qreal aw, qreal ah)
- { setMaximumSize(QSizeF(aw, ah)); }
- inline qreal QGraphicsLayoutItem::minimumWidth() const
- { return effectiveSizeHint(Qt::MinimumSize).width(); }
- inline qreal QGraphicsLayoutItem::minimumHeight() const
- { return effectiveSizeHint(Qt::MinimumSize).height(); }
- inline qreal QGraphicsLayoutItem::preferredWidth() const
- { return effectiveSizeHint(Qt::PreferredSize).width(); }
- inline qreal QGraphicsLayoutItem::preferredHeight() const
- { return effectiveSizeHint(Qt::PreferredSize).height(); }
- inline qreal QGraphicsLayoutItem::maximumWidth() const
- { return effectiveSizeHint(Qt::MaximumSize).width(); }
- inline qreal QGraphicsLayoutItem::maximumHeight() const
- { return effectiveSizeHint(Qt::MaximumSize).height(); }
- #endif
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif