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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QLAYOUT_H
#define QLAYOUT_H
#include <QtCore/qobject.h>
#include <QtGui/qlayoutitem.h>
#include <QtGui/qsizepolicy.h>
#include <QtCore/qrect.h>
#include <limits.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
class QLayout;
class QSize;
#ifdef QT3_SUPPORT
class Q_GUI_EXPORT QLayoutIterator
{
public:
inline QT3_SUPPORT_CONSTRUCTOR QLayoutIterator(QLayout *i) : layout(i), index(0) {}
inline QLayoutIterator(const QLayoutIterator &i)
: layout(i.layout), index(i.index) {}
inline QLayoutIterator &operator=(const QLayoutIterator &i) {
layout = i.layout;
index = i.index;
return *this;
}
inline QT3_SUPPORT QLayoutItem *operator++();
inline QT3_SUPPORT QLayoutItem *current();
inline QT3_SUPPORT QLayoutItem *takeCurrent();
inline QT3_SUPPORT void deleteCurrent();
private:
// hack to avoid deprecated warning
friend class QLayout;
inline QLayoutIterator(QLayout *i, bool) : layout(i), index(0) {}
QLayout *layout;
int index;
};
#endif
class QLayoutPrivate;
class Q_GUI_EXPORT QLayout : public QObject, public QLayoutItem
{
Q_OBJECT
Q_DECLARE_PRIVATE(QLayout)
Q_ENUMS(SizeConstraint)
Q_PROPERTY(int margin READ margin WRITE setMargin)
Q_PROPERTY(int spacing READ spacing WRITE setSpacing)
Q_PROPERTY(SizeConstraint sizeConstraint READ sizeConstraint WRITE setSizeConstraint)
public:
enum SizeConstraint {
SetDefaultConstraint,
SetNoConstraint,
SetMinimumSize,
SetFixedSize,
SetMaximumSize,
SetMinAndMaxSize
#if defined(QT3_SUPPORT) && !defined(Q_MOC_RUN)
, Auto = SetDefaultConstraint,
FreeResize = SetNoConstraint,
Minimum = SetMinimumSize,
Fixed = SetFixedSize
#endif
};
QLayout(QWidget *parent);
QLayout();
~QLayout();
int margin() const;
int spacing() const;
void setMargin(int);
void setSpacing(int);
void setContentsMargins(int left, int top, int right, int bottom);
void getContentsMargins(int *left, int *top, int *right, int *bottom) const;
QRect contentsRect() const;
bool setAlignment(QWidget *w, Qt::Alignment alignment);
bool setAlignment(QLayout *l, Qt::Alignment alignment);
#ifdef Q_NO_USING_KEYWORD
inline void setAlignment(Qt::Alignment alignment) { QLayoutItem::setAlignment(alignment); }
#else
using QLayoutItem::setAlignment;
#endif
void setSizeConstraint(SizeConstraint);
SizeConstraint sizeConstraint() const;
#ifdef QT3_SUPPORT
inline QT3_SUPPORT void setResizeMode(SizeConstraint s) {setSizeConstraint(s);}
inline QT3_SUPPORT SizeConstraint resizeMode() const {return sizeConstraint();}
#endif
void setMenuBar(QWidget *w);
QWidget *menuBar() const;
QWidget *parentWidget() const;
void invalidate();
QRect geometry() const;
bool activate();
void update();
void addWidget(QWidget *w);
virtual void addItem(QLayoutItem *) = 0;
void removeWidget(QWidget *w);
void removeItem(QLayoutItem *);
Qt::Orientations expandingDirections() const;
QSize minimumSize() const;
QSize maximumSize() const;
virtual void setGeometry(const QRect&);
virtual QLayoutItem *itemAt(int index) const = 0;
virtual QLayoutItem *takeAt(int index) = 0;
virtual int indexOf(QWidget *) const;
virtual int count() const = 0;
bool isEmpty() const;
int totalHeightForWidth(int w) const;
QSize totalMinimumSize() const;
QSize totalMaximumSize() const;
QSize totalSizeHint() const;
QLayout *layout();
void setEnabled(bool);
bool isEnabled() const;
#ifdef QT3_SUPPORT
QT3_SUPPORT void freeze(int w=0, int h=0);
QT3_SUPPORT bool isTopLevel() const;
#endif
static QSize closestAcceptableSize(const QWidget *w, const QSize &s);
protected:
void widgetEvent(QEvent *);
void childEvent(QChildEvent *e);
void addChildLayout(QLayout *l);
void addChildWidget(QWidget *w);
#ifdef QT3_SUPPORT
QT3_SUPPORT void deleteAllItems();
#endif
QRect alignmentRect(const QRect&) const;
protected:
QLayout(QLayoutPrivate &d, QLayout*, QWidget*);
private:
Q_DISABLE_COPY(QLayout)
static void activateRecursiveHelper(QLayoutItem *item);
friend class QApplicationPrivate;
friend class QWidget;
#ifdef QT3_SUPPORT
public:
QT3_SUPPORT_CONSTRUCTOR QLayout(QWidget *parent, int margin, int spacing = -1,
const char *name = 0);
QT3_SUPPORT_CONSTRUCTOR QLayout(QLayout *parentLayout, int spacing = -1, const char *name = 0);
QT3_SUPPORT_CONSTRUCTOR QLayout(int spacing, const char *name = 0);
inline QT3_SUPPORT QWidget *mainWidget() const { return parentWidget(); }
inline QT3_SUPPORT void remove(QWidget *w) { removeWidget(w); }
inline QT3_SUPPORT void add(QWidget *w) { addWidget(w); }
QT3_SUPPORT void setAutoAdd(bool a);
QT3_SUPPORT bool autoAdd() const;
inline QT3_SUPPORT QLayoutIterator iterator() { return QLayoutIterator(this,true); }
inline QT3_SUPPORT int defaultBorder() const { return spacing(); }
#endif
};
#ifdef QT3_SUPPORT
inline QLayoutItem *QLayoutIterator::operator++() { return layout->itemAt(++index); }
inline QLayoutItem *QLayoutIterator::current() { return layout->itemAt(index); }
inline QLayoutItem *QLayoutIterator::takeCurrent() { return layout->takeAt(index); }
inline void QLayoutIterator::deleteCurrent() { delete layout->takeAt(index); }
#endif
//### support old includes
#if 1 //def QT3_SUPPORT
QT_BEGIN_INCLUDE_NAMESPACE
#include <QtGui/qboxlayout.h>
#include <QtGui/qgridlayout.h>
QT_END_INCLUDE_NAMESPACE
#endif
QT_END_NAMESPACE
QT_END_HEADER
#endif // QLAYOUT_H
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