/**************************************************************************** ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 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 to ensure GNU ** General Public Licensing requirements will be met: ** http://www.trolltech.com/products/qt/opensource.html ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://www.trolltech.com/products/qt/licensing.html or contact the ** sales department at sales@trolltech.com. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #ifndef QLAYOUTITEM_H #define QLAYOUTITEM_H #include <QtGui/qsizepolicy.h> #include <QtCore/qrect.h> #include <limits.h> QT_BEGIN_HEADER QT_MODULE(Gui) static const int QLAYOUTSIZE_MAX = INT_MAX/256/16; class QLayout; class QLayoutItem; class QSpacerItem; class QWidget; class QSize; 00044 class Q_GUI_EXPORT QLayoutItem { public: inline explicit QLayoutItem(Qt::Alignment alignment = 0); virtual ~QLayoutItem(); virtual QSize sizeHint() const = 0; virtual QSize minimumSize() const = 0; virtual QSize maximumSize() const = 0; virtual Qt::Orientations expandingDirections() const = 0; virtual void setGeometry(const QRect&) = 0; virtual QRect geometry() const = 0; virtual bool isEmpty() const = 0; virtual bool hasHeightForWidth() const; virtual int heightForWidth(int) const; virtual int minimumHeightForWidth(int) const; virtual void invalidate(); virtual QWidget *widget(); virtual QLayout *layout(); virtual QSpacerItem *spacerItem(); 00065 Qt::Alignment alignment() const { return align; } void setAlignment(Qt::Alignment a); protected: Qt::Alignment align; }; 00072 inline QLayoutItem::QLayoutItem(Qt::Alignment aalignment) : align(aalignment) { } 00075 class Q_GUI_EXPORT QSpacerItem : public QLayoutItem { public: 00078 QSpacerItem(int w, int h, QSizePolicy::Policy hData = QSizePolicy::Minimum, QSizePolicy::Policy vData = QSizePolicy::Minimum) : width(w), height(h), sizeP(hData, vData) { } void changeSize(int w, int h, QSizePolicy::Policy hData = QSizePolicy::Minimum, QSizePolicy::Policy vData = QSizePolicy::Minimum); QSize sizeHint() const; QSize minimumSize() const; QSize maximumSize() const; Qt::Orientations expandingDirections() const; bool isEmpty() const; void setGeometry(const QRect&); QRect geometry() const; QSpacerItem *spacerItem(); private: int width; int height; QSizePolicy sizeP; QRect rect; }; 00101 class Q_GUI_EXPORT QWidgetItem : public QLayoutItem { public: 00104 explicit QWidgetItem(QWidget *w) : wid(w) { } QSize sizeHint() const; QSize minimumSize() const; QSize maximumSize() const; Qt::Orientations expandingDirections() const; bool isEmpty() const; void setGeometry(const QRect&); QRect geometry() const; virtual QWidget *widget(); bool hasHeightForWidth() const; int heightForWidth(int) const; private: QWidget *wid; Q_DISABLE_COPY(QWidgetItem) }; QT_END_HEADER #endif // QLAYOUTITEM_H