qttableview.h

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/**********************************************************************
** $Id: qttableview.h,v 1.2 2002/03/09 03:13:13 jwalz Exp $
**
** Definition of QtTableView class
**
** Created : 941115
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file contains a class moved out of the Qt GUI Toolkit API. It
** may be used, distributed and modified without limitation.
**
**********************************************************************/

#ifndef QTTABLEVIEW_H
#define QTTABLEVIEW_H

#ifndef QT_H
#include <qframe.h>
#endif // QT_H

#ifndef QT_NO_QTTABLEVIEW

class QScrollBar;
class QCornerSquare;


class QtTableView : public QFrame
{
    Q_OBJECT
public:
    virtual void setBackgroundColor( const QColor & );
    virtual void setPalette( const QPalette & );
    void        show();

    void        repaint( bool erase=TRUE );
    void        repaint( int x, int y, int w, int h, bool erase=TRUE );
    void        repaint( const QRect &, bool erase=TRUE );

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

    int         numRows()       const;
    virtual void setNumRows( int );
    int         numCols()       const;
    virtual void setNumCols( int );

    int         topCell()       const;
    virtual void setTopCell( int row );
    int         leftCell()      const;
    virtual void setLeftCell( int col );
    virtual void setTopLeftCell( int row, int col );

    int         xOffset()       const;
    virtual void setXOffset( int );
    int         yOffset()       const;
    virtual void setYOffset( int );
    virtual void setOffset( int x, int y, bool updateScrBars = TRUE );

    virtual int cellWidth( int col );
    virtual int cellHeight( int row );
    int         cellWidth()     const;
    int         cellHeight()    const;
    virtual void setCellWidth( int );
    virtual void setCellHeight( int );

    virtual int totalWidth();
    virtual int totalHeight();

    uint        tableFlags()    const;
    bool        testTableFlags( uint f ) const;
    virtual void setTableFlags( uint f );
    void        clearTableFlags( uint f = ~0 );

    bool        autoUpdate()     const;
    virtual void setAutoUpdate( bool );

    void        updateCell( int row, int column, bool erase=TRUE );

    QRect       cellUpdateRect() const;
    QRect       viewRect()       const;

    int         lastRowVisible() const;
    int         lastColVisible() const;

    bool        rowIsVisible( int row ) const;
    bool        colIsVisible( int col ) const;

    QScrollBar *verticalScrollBar() const;
    QScrollBar *horizontalScrollBar() const;

private slots:
    void        horSbValue( int );
    void        horSbSliding( int );
    void        horSbSlidingDone();
    void        verSbValue( int );
    void        verSbSliding( int );
    void        verSbSlidingDone();

protected:
    virtual void paintCell( QPainter *, int row, int col ) = 0;
    virtual void setupPainter( QPainter * );

    void        paintEvent( QPaintEvent * );
    void        resizeEvent( QResizeEvent * );

    int         findRow( int yPos ) const;
    int         findCol( int xPos ) const;

    bool        rowYPos( int row, int *yPos ) const;
    bool        colXPos( int col, int *xPos ) const;

    int         maxXOffset();
    int         maxYOffset();
    int         maxColOffset();
    int         maxRowOffset();

    int         minViewX()      const;
    int         minViewY()      const;
    int         maxViewX()      const;
    int         maxViewY()      const;
    int         viewWidth()     const;
    int         viewHeight()    const;

    void        scroll( int xPixels, int yPixels );
    void        updateScrollBars();
    void        updateTableSize();

private:
    void        coverCornerSquare( bool );
    void        snapToGrid( bool horizontal, bool vertical );
    virtual void        setHorScrollBar( bool on, bool update = TRUE );
    virtual void        setVerScrollBar( bool on, bool update = TRUE );
    void        updateView();
    int         findRawRow( int yPos, int *cellMaxY, int *cellMinY = 0,
                            bool goOutsideView = FALSE ) const;
    int         findRawCol( int xPos, int *cellMaxX, int *cellMinX = 0,
                            bool goOutsideView = FALSE ) const;
    int         maxColsVisible() const;

    void        updateScrollBars( uint );
    void        updateFrameSize();

    void        doAutoScrollBars();
    void        showOrHideScrollBars();

    int         nRows;
    int         nCols;
    int         xOffs, yOffs;
    int         xCellOffs, yCellOffs;
    short       xCellDelta, yCellDelta;
    short       cellH, cellW;

    uint        eraseInPaint            : 1;
    uint        verSliding              : 1;
    uint        verSnappingOff          : 1;
    uint        horSliding              : 1;
    uint        horSnappingOff          : 1;
    uint        coveringCornerSquare    : 1;
    uint        sbDirty                 : 8;
    uint        inSbUpdate              : 1;

    uint        tFlags;
    QRect       cellUpdateR;

    QScrollBar *vScrollBar;
    QScrollBar *hScrollBar;
    QCornerSquare *cornerSquare;

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


const uint Tbl_vScrollBar       = 0x00000001;
const uint Tbl_hScrollBar       = 0x00000002;
const uint Tbl_autoVScrollBar   = 0x00000004;
const uint Tbl_autoHScrollBar   = 0x00000008;
const uint Tbl_autoScrollBars   = 0x0000000C;

const uint Tbl_clipCellPainting = 0x00000100;
const uint Tbl_cutCellsV        = 0x00000200;
const uint Tbl_cutCellsH        = 0x00000400;
const uint Tbl_cutCells         = 0x00000600;

const uint Tbl_scrollLastHCell  = 0x00000800;
const uint Tbl_scrollLastVCell  = 0x00001000;
const uint Tbl_scrollLastCell   = 0x00001800;

const uint Tbl_smoothHScrolling = 0x00002000;
const uint Tbl_smoothVScrolling = 0x00004000;
const uint Tbl_smoothScrolling  = 0x00006000;

const uint Tbl_snapToHGrid      = 0x00008000;
const uint Tbl_snapToVGrid      = 0x00010000;
const uint Tbl_snapToGrid       = 0x00018000;


inline int QtTableView::numRows() const
{ return nRows; }

inline int QtTableView::numCols() const
{ return nCols; }

inline int QtTableView::topCell() const
{ return yCellOffs; }

inline int QtTableView::leftCell() const
{ return xCellOffs; }

inline int QtTableView::xOffset() const
{ return xOffs; }

inline int QtTableView::yOffset() const
{ return yOffs; }

inline int QtTableView::cellHeight() const
{ return cellH; }

inline int QtTableView::cellWidth() const
{ return cellW; }

inline uint QtTableView::tableFlags() const
{ return tFlags; }

inline bool QtTableView::testTableFlags( uint f ) const
{ return (tFlags & f) != 0; }

inline QRect QtTableView::cellUpdateRect() const
{ return cellUpdateR; }

inline bool QtTableView::autoUpdate() const
{ return isUpdatesEnabled(); }

inline void QtTableView::repaint( bool erase )
{ repaint( 0, 0, width(), height(), erase ); }

inline void QtTableView::repaint( const QRect &r, bool erase )
{ repaint( r.x(), r.y(), r.width(), r.height(), erase ); }

inline void QtTableView::updateScrollBars()
{ updateScrollBars( 0 ); }


#endif // QT_NO_QTTABLEVIEW

#endif // QTTABLEVIEW_H