Qt Toolkit - qlistbox.h include file

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# qlistbox.h

This is the verbatim text of the qlistbox.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /**********************************************************************
    ** $Id: qt/src/widgets/qlistbox.h   2.3.7   edited 2001-01-26 $
    **
    ** Definition of QListBox widget class
    **
    ** Created : 941121
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the widgets module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QLISTBOX_H
    #define QLISTBOX_H

    #ifndef QT_H
    #include "qscrollview.h"
    #include "qpixmap.h"
    #include "qtimer.h"
    #endif // QT_H

    #ifndef QT_NO_LISTBOX

    class QListBoxPrivate;
    class QListBoxItem;
    class QString;
    class QStrList;
    class QStringList;

    class Q_EXPORT QListBox : public QScrollView
    {
        friend class QListBoxItem;
        friend class QListBoxPrivate;

        Q_OBJECT
        Q_ENUMS( SelectionMode LayoutMode )
        Q_PROPERTY( uint count READ count )
        Q_PROPERTY( int numItemsVisible READ numItemsVisible )
        Q_PROPERTY( int currentItem READ currentItem WRITE setCurrentItem DESIGNABLE false )
        Q_PROPERTY( QString currentText READ currentText )
        Q_PROPERTY( int topItem READ topItem WRITE setTopItem DESIGNABLE false )
        Q_PROPERTY( SelectionMode selectionMode READ selectionMode WRITE setSelectionMode )
        Q_PROPERTY( bool multiSelection READ isMultiSelection WRITE setMultiSelection DESIGNABLE false )
        Q_PROPERTY( LayoutMode columnMode READ columnMode WRITE setColumnMode )
        Q_PROPERTY( LayoutMode rowMode READ rowMode WRITE setRowMode )
        Q_PROPERTY( int numColumns READ numColumns )
        Q_PROPERTY( int numRows READ numRows )
        Q_PROPERTY( bool variableWidth READ variableWidth WRITE setVariableWidth )
        Q_PROPERTY( bool variableHeight READ variableHeight WRITE setVariableHeight )

    public:
        QListBox( QWidget *parent=0, const char *name=0, WFlags f=0  );
       ~QListBox();

        virtual void setFont( const QFont & );

        uint count() const;

        void insertStringList( const QStringList&, int index=-1 );
        void insertStrList( const QStrList *, int index=-1 );
        void insertStrList( const QStrList &, int index=-1 );
        void insertStrList( const char **,
                            int numStrings=-1, int index=-1 );

        void insertItem( const QListBoxItem *, int index=-1 );
        void insertItem( const QListBoxItem *, const QListBoxItem *after );
        void insertItem( const QString &text, int index=-1 );
        void insertItem( const QPixmap &pixmap, int index=-1 );
        void insertItem( const QPixmap &pixmap, const QString &text, int index=-1 );

        void removeItem( int index );
        void clear();

        QString text( int index )   const;
        const QPixmap *pixmap( int index )  const;

        void changeItem( const QListBoxItem *, int index );
        void changeItem( const QString &text, int index );
        void changeItem( const QPixmap &pixmap, int index );
        void changeItem( const QPixmap &pixmap, const QString &text, int index );

        void takeItem( const QListBoxItem * );

        int numItemsVisible() const;

        int currentItem() const;
        QString currentText() const { return text(currentItem()); }
        virtual void setCurrentItem( int index );
        virtual void setCurrentItem( QListBoxItem * );
        void centerCurrentItem() { ensureCurrentVisible(); }
        int topItem() const;
        virtual void setTopItem( int index );
        virtual void setBottomItem( int index );

        long maxItemWidth() const;

        enum SelectionMode { Single, Multi, Extended, NoSelection };
        virtual void setSelectionMode( SelectionMode );
        SelectionMode selectionMode() const;

        void setMultiSelection( bool multi );
        bool isMultiSelection() const;

        virtual void setSelected( QListBoxItem *, bool );
        void setSelected( int, bool );
        bool isSelected( int ) const;
        bool isSelected( const QListBoxItem * ) const;

        QSize sizeHint() const;
        QSize       minimumSizeHint() const;

        QListBoxItem *item( int index ) const;
        int index( const QListBoxItem * ) const;
        QListBoxItem *findItem( const QString &text ) const;

        void triggerUpdate( bool doLayout );

        bool itemVisible( int index );
        bool itemVisible( const QListBoxItem * );

        enum LayoutMode { FixedNumber,
                          FitToWidth, FitToHeight = FitToWidth,
                          Variable };
        virtual void setColumnMode( LayoutMode );
        virtual void setColumnMode( int );
        virtual void setRowMode( LayoutMode );
        virtual void setRowMode( int );

        LayoutMode columnMode() const;
        LayoutMode rowMode() const;

        int numColumns() const;
        int numRows() const;

        bool variableWidth() const;
        virtual void setVariableWidth( bool );

        bool variableHeight() const;
        virtual void setVariableHeight( bool );

        void viewportPaintEvent( QPaintEvent * );

    #ifndef QT_NO_COMPAT // obsolete, provided for source compatibility
        bool dragSelect() const { return TRUE; }
        void setDragSelect( bool ) {}
        bool autoScroll() const { return TRUE; }
        void setAutoScroll( bool ) {}
        bool autoScrollBar() const { return vScrollBarMode() == Auto; }
        void setAutoScrollBar( bool enable ) { setVScrollBarMode( enable ? Auto : AlwaysOff ); }
        bool scrollBar() const { return vScrollBarMode() != AlwaysOff; }
        void setScrollBar( bool enable ) { setVScrollBarMode( enable ? AlwaysOn : AlwaysOff ); }
        bool autoBottomScrollBar() const { return hScrollBarMode() == Auto; }
        void setAutoBottomScrollBar( bool enable ) { setHScrollBarMode( enable ? Auto : AlwaysOff ); }
        bool bottomScrollBar() const { return hScrollBarMode() != AlwaysOff; }
        void setBottomScrollBar( bool enable ) { setHScrollBarMode( enable ? AlwaysOn : AlwaysOff ); }
        bool smoothScrolling() const { return FALSE; }
        void setSmoothScrolling( bool ) {}
        bool autoUpdate() const { return TRUE; }
        void setAutoUpdate( bool ) {}
        void setFixedVisibleLines( int lines ) { setRowMode( lines ); }
        void inSort( const QListBoxItem * );
        void inSort( const QString& text );
        int cellHeight( int i ) const { return itemHeight(i); }
        int cellHeight() const { return itemHeight(); }
        int cellWidth() const { return maxItemWidth(); }
        int cellWidth(int i) const { ASSERT(i==0); return maxItemWidth(); }
        int numCols() const { return numColumns(); }
    #endif

        int itemHeight( int index = 0 ) const;
        QListBoxItem * itemAt( QPoint ) const;

        QRect itemRect( QListBoxItem *item ) const;

        QListBoxItem *firstItem() const;

        void sort( bool ascending = TRUE );

    public slots:
        virtual void ensureCurrentVisible();
        virtual void clearSelection();
        void selectAll( bool select ); // ###### make virtual
        void invertSelection(); // ######### make virtual

    signals:
        void highlighted( int index );
        void selected( int index );
        void highlighted( const QString &);
        void selected( const QString &);
        void highlighted( QListBoxItem * );
        void selected( QListBoxItem * );

        void selectionChanged();
        void selectionChanged( QListBoxItem * );
        void currentChanged( QListBoxItem * );
        void clicked( QListBoxItem * );
        void clicked( QListBoxItem *, const QPoint & );
        void pressed( QListBoxItem * );
        void pressed( QListBoxItem *, const QPoint & );

        void doubleClicked( QListBoxItem * );
        void returnPressed( QListBoxItem * );
        void rightButtonClicked( QListBoxItem *, const QPoint & );
        void rightButtonPressed( QListBoxItem *, const QPoint & );
        void mouseButtonPressed( int, QListBoxItem*, const QPoint& );
        void mouseButtonClicked( int, QListBoxItem*, const QPoint& );

        void onItem( QListBoxItem *item );
        void onViewport();

    protected:
        void viewportMousePressEvent( QMouseEvent * );
        void viewportMouseReleaseEvent( QMouseEvent * );
        void viewportMouseDoubleClickEvent( QMouseEvent * );
        void viewportMouseMoveEvent( QMouseEvent * );
        void mousePressEvent( QMouseEvent * );
        void mouseReleaseEvent( QMouseEvent * );
        void mouseDoubleClickEvent( QMouseEvent * );
        void mouseMoveEvent( QMouseEvent * );
        void keyPressEvent( QKeyEvent *e );
        void focusInEvent( QFocusEvent *e );
        void focusOutEvent( QFocusEvent *e );
        void resizeEvent( QResizeEvent * );
        void showEvent( QShowEvent * );

        void updateItem( int index );
        void updateItem( QListBoxItem * );

    #ifndef QT_NO_COMPAT
        void updateCellWidth() { }
        int totalWidth() const { return contentsWidth(); }
        int totalHeight() const { return contentsHeight(); }
    #endif

        virtual void paintCell( QPainter *, int row, int col );

        void toggleCurrentItem();
        bool isRubberSelecting() const;

        void doLayout() const;

    #ifndef QT_NO_COMPAT // obsolete, provided for source compatibility
        bool itemYPos( int index, int *yPos ) const;
        int findItem( int yPos ) const {return index(itemAt(QPoint(0,yPos)));}
    #endif

    protected slots:
        void clearInputString();

    private slots:
        void refreshSlot();
        void doAutoScroll();
        void adjustItems();

    private:
        void tryGeometry( int, int ) const;
        int currentRow() const;
        int currentColumn() const;
        void updateSelection();
        void drawRubber();
        void doRubberSelection( const QRect &old, const QRect &rubber );
        void handleItemChange( QListBoxItem *old, bool shift, bool control );
        void selectRange( QListBoxItem *from, QListBoxItem *to, bool invert, bool includeFirst, bool clearSel = FALSE );

        void emitChangedSignal( bool );

        int columnAt( int ) const;
        int rowAt( int ) const;

        QListBoxPrivate * d;

        static QListBox * changedListBox;

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QListBox( const QListBox & );
        QListBox &operator=( const QListBox & );
    #endif
    };

    class Q_EXPORT QListBoxItem
    {
    public:
        QListBoxItem( QListBox* listbox = 0 );
        QListBoxItem( QListBox* listbox, QListBoxItem *after );
        virtual ~QListBoxItem();

        virtual QString text() const;
        virtual const QPixmap *pixmap() const;

        virtual int  height( const QListBox * ) const;
        virtual int  width( const QListBox * )  const;

        bool selected() const { return s; }
        bool current() const;

        QListBox *listBox() const;

        void setSelectable( bool b );
        bool isSelectable() const;

        QListBoxItem *next() const;
        QListBoxItem *prev() const;

    protected:
        virtual void paint( QPainter * ) = 0;
        virtual void setText( const QString &text ) { txt = text; }
        void setCustomHighlighting( bool );

    private:
        QString txt;
        uint s:1;
        uint dirty:1;
        uint custom_highlight : 1;
        int x, y;
        QListBoxItem * p, * n;
        QListBox* lbox;
        friend class QListBox;
        friend class QListBoxPrivate;
        friend class QComboBox;

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QListBoxItem( const QListBoxItem & );
        QListBoxItem &operator=( const QListBoxItem & );
    #endif
    };

    class Q_EXPORT QListBoxText : public QListBoxItem
    {
    public:
        QListBoxText( QListBox* listbox, const QString & text=QString::null );
        QListBoxText( const QString & text=QString::null );
        QListBoxText( QListBox* listbox, const QString & text, QListBoxItem *after );
       ~QListBoxText();

        int  height( const QListBox * ) const;
        int  width( const QListBox * )  const;

    protected:
        void  paint( QPainter * );

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QListBoxText( const QListBoxText & );
        QListBoxText &operator=( const QListBoxText & );
    #endif
    };

    class Q_EXPORT QListBoxPixmap : public QListBoxItem
    {
    public:
        QListBoxPixmap( QListBox* listbox, const QPixmap & );
        QListBoxPixmap( const QPixmap & );
        QListBoxPixmap( QListBox* listbox, const QPixmap & pix, QListBoxItem *after );
        QListBoxPixmap( QListBox* listbox, const QPixmap &, const QString& );
        QListBoxPixmap( const QPixmap &, const QString& );
        QListBoxPixmap( QListBox* listbox, const QPixmap & pix, const QString&, QListBoxItem *after );
       ~QListBoxPixmap();

        const QPixmap *pixmap() const { return &pm; }

        int  height( const QListBox * ) const;
        int  width( const QListBox * )  const;

    protected:
        void paint( QPainter * );

    private:
        QPixmap pm;
    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QListBoxPixmap( const QListBoxPixmap & );
        QListBoxPixmap &operator=( const QListBoxPixmap & );
    #endif
    };

    #endif // QT_NO_LISTBOX

    #endif // QLISTBOX_H