/**************************************************************************** ** $Id: qabstractlayout.h,v 2.25.2.1 1999/07/07 17:15:51 warwick Exp $ ** ** Definition of the abstract layout base class ** ** Created : 960416 ** ** Copyright (C) 1992-1999 Troll Tech AS. All rights reserved. ** ** This file is part of the Qt GUI Toolkit. ** ** This file may be distributed under the terms of the Q Public License ** as defined by Troll Tech AS of Norway and appearing in the file ** LICENSE.QPL included in the packaging of this file. ** ** Licensees holding valid Qt Professional Edition licenses may use this ** file in accordance with the Qt Professional Edition License Agreement ** provided with the Qt Professional Edition. ** ** See http://www.troll.no/pricing.html or email sales@troll.no for ** information about the Professional Edition licensing, or see ** http://www.troll.no/qpl/ for QPL licensing information. ** *****************************************************************************/ #ifndef QABSTRACTLAYOUT_H #define QABSTRACTLAYOUT_H #ifndef QT_H #include "qobject.h" #include "qsizepolicy.h" #include "qwidget.h" #endif // QT_H class QMenuBar; class QWidget; struct QLayoutData; class QLayoutItem; class QLayout; class QSpacerItem; class Q_EXPORT QGLayoutIterator : public QShared { public: virtual ~QGLayoutIterator(); virtual QLayoutItem *next() = 0; virtual QLayoutItem *current() = 0; virtual QLayoutItem *takeCurrent() = 0; }; class Q_EXPORT QLayoutIterator { public: QLayoutIterator( QGLayoutIterator *i ) :it(i) {} QLayoutIterator( const QLayoutIterator &i ) :it( i.it ) { if ( it ) it->ref(); } ~QLayoutIterator() { if ( it && it->deref() ) delete it; } QLayoutIterator &operator=( const QLayoutIterator &i ) { if ( it && it->deref() ) delete it; it = i.it; if ( it ) it->ref(); return *this; } QLayoutItem *operator++() { return it ? it->next() : 0; } QLayoutItem *current() { return it ? it->current() : 0; } QLayoutItem *takeCurrent() { return it ? it->takeCurrent() : 0; } void deleteCurrent(); private: QGLayoutIterator *it; }; class Q_EXPORT QLayoutItem { public: QLayoutItem( int alignment = 0 ) :align(alignment) {} virtual ~QLayoutItem(); virtual QSize sizeHint() const = 0; virtual QSize minimumSize() const = 0; virtual QSize maximumSize() const = 0; virtual QSizePolicy::ExpandData expanding() 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 void invalidate(); virtual QWidget *widget(); virtual QLayoutIterator iterator(); virtual QLayout *layout(); virtual QSpacerItem *spacerItem(); int alignment() const { return align; } virtual void setAlignment( int a ); protected: int align; }; class Q_EXPORT QSpacerItem : public QLayoutItem { public: QSpacerItem( int w, int h, QSizePolicy::SizeType hData=QSizePolicy::Minimum, QSizePolicy::SizeType vData= QSizePolicy::Minimum ) :width(w), height(h), sizeP(hData, vData ) {} void changeSize( int w, int h, QSizePolicy::SizeType hData=QSizePolicy::Minimum, QSizePolicy::SizeType vData=QSizePolicy::Minimum ); QSize sizeHint() const ; QSize minimumSize() const ; QSize maximumSize() const ; QSizePolicy::ExpandData expanding() const; bool isEmpty() const; void setGeometry( const QRect& ); QRect geometry() const; QSpacerItem *spacerItem(); private: int width, height; QSizePolicy sizeP; QRect rect; }; class Q_EXPORT QWidgetItem : public QLayoutItem { public: QWidgetItem( QWidget *w ) : wid(w) {} QSize sizeHint() const ; QSize minimumSize() const ; QSize maximumSize() const ; QSizePolicy::ExpandData expanding() const; bool isEmpty() const; void setGeometry( const QRect& ) ; QRect geometry() const; //void invalidate(); virtual QWidget *widget(); bool hasHeightForWidth() const; int heightForWidth( int ) const; private: //QSize cachedSizeHint; QWidget *wid; }; class Q_EXPORT QLayout : public QObject, public QLayoutItem { Q_OBJECT public: QLayout( QWidget *parent, int border=0, int space=-1, const char *name=0 ); QLayout( QLayout *parentLayout, int space=-1, const char *name=0 ); QLayout( int space=-1, const char *name=0 ); ~QLayout(); int spacing() const { return insideSpacing; } int margin() const { return outsideBorder; } virtual void setMargin( int ); virtual void setSpacing( int ); enum { unlimited = QWIDGETSIZE_MAX }; enum ResizeMode { FreeResize, Minimum, Fixed }; #if 1 //OBSOLETE int defaultBorder() const { return insideSpacing; } void freeze( int w, int h ); void freeze() { setResizeMode( Fixed ); } #endif void setResizeMode( ResizeMode ); ResizeMode resizeMode() const; virtual void setMenuBar( QMenuBar *w ); QWidget *mainWidget(); QMenuBar *menuBar() const { return menubar; } bool isTopLevel() const { return topLevel; } virtual void setAutoAdd( bool ); bool autoAdd() const { return autoNewChild; } QRect geometry() const; bool activate(); void add( QWidget *w ) { addItem( new QWidgetItem( w ) ); } virtual void addItem ( QLayoutItem * ) = 0; QSizePolicy::ExpandData expanding() const; QSize minimumSize() const; QSize maximumSize() const; void setGeometry( const QRect& )=0; QLayoutIterator iterator()=0; bool isEmpty() const; int totalHeightForWidth( int w ) const; QSize totalMinimumSize() const; QSize totalMaximumSize() const; QSize totalSizeHint() const; QLayout *layout(); protected: bool eventFilter( QObject *, QEvent * ); void addChildLayout( QLayout *l ); void deleteAllItems(); private: void setWidgetLayout( QWidget *, QLayout * ); int insideSpacing; int outsideBorder; uint topLevel : 1; uint autoMinimum : 1; uint autoNewChild : 1; uint frozen : 1; uint activated : 1; QRect rect; QLayoutData *extraData; QMenuBar *menubar; private: // Disabled copy constructor and operator= #if defined(Q_DISABLE_COPY) QLayout( const QLayout & ); QLayout &operator=( const QLayout & ); #endif }; inline void QLayoutIterator::deleteCurrent() { delete takeCurrent(); } #endif
Copyright © 1999 Troll Tech | Trademarks | Qt version 2.0.2
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