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QGridView(3qt)									   QGridView(3qt)

NAME
       QGridView - Abstract base for fixed-size grids

SYNOPSIS
       #include <qgridview.h>

       Inherits QScrollView.

   Public Members
       QGridView ( QWidget * parent = 0, const char * name = 0, WFlags f = 0 )
       ~QGridView ()
       int numRows () const
       virtual void setNumRows ( int )
       int numCols () const
       virtual void setNumCols ( int )
       int cellWidth () const
       virtual void setCellWidth ( int )
       int cellHeight () const
       virtual void setCellHeight ( int )
       QRect cellRect () const
       QRect cellGeometry ( int row, int column )
       QSize gridSize () const
       int rowAt ( int y ) const
       int columnAt ( int x ) const
       void repaintCell ( int row, int column, bool erase = TRUE )
       void updateCell ( int row, int column )
       void ensureCellVisible ( int row, int column )

   Properties
       int cellHeight - the height of a grid row
       int cellWidth - the width of a grid column
       int numCols - the number of columns in the grid
       int numRows - the number of rows in the grid

   Protected Members
       virtual void paintCell ( QPainter * p, int row, int col ) = 0
       virtual void paintEmptyArea ( QPainter * p, int cx, int cy, int cw, int ch )
       virtual void dimensionChange ( int oldNumRows, int oldNumCols )

DESCRIPTION
       The QGridView class provides an abstract base for fixed-size grids.

       A grid view consists of a number of abstract cells organized in rows and columns. The
       cells have a fixed size and are identified with a row index and a column index. The top-
       left cell is in row 0, column 0. The bottom-right cell is in row numRows()-1, column
       numCols()-1.

       You can define numRows, numCols, cellWidth and cellHeight. Reimplement the pure virtual
       function paintCell() to draw the contents of a cell.

       With ensureCellVisible(), you can ensure a certain cell is visible. With rowAt() and
       columnAt() you can find a cell based on the given x- and y-coordinates.

       If you need to monitor changes to the grid's dimensions (i.e. when numRows or numCols is
       changed), reimplement the dimensionChange() change handler.

       Note: the row and column indices are always given in the order, row (vertical offset) then
       column (horizontal offset). This order is the opposite of all pixel operations, which are
       given in the order x (horizontal offset), y (vertical offset).

       QGridView is a very simple abstract class based on QScrollView. It is designed to simplify
       the task of drawing many cells of the same size in a potentially scrollable canvas. If you
       need rows and columns with different sizes, use a QTable instead. If you need a simple
       list of items, use a QListBox. If you need to present hierachical data use a QListView,
       and if you need random objects at random positions, consider using either a QIconView or a
       QCanvas.

       See also Abstract Widget Classes.

MEMBER FUNCTION DOCUMENTATION
QGridView::QGridView ( QWidget * parent = 0, const char * name = 0, WFlags f = 0 )
       Constructs a grid view.

       The parent, name and widget flag, f, arguments are passed to the QScrollView constructor.

QGridView::~QGridView ()
       Destroys the grid view.

QRect QGridView::cellGeometry ( int row, int column )
       Returns the geometry of cell (row, column) in the content coordinate system.

       See also cellRect().

int QGridView::cellHeight () const
       Returns the height of a grid row. See the "cellHeight" property for details.

QRect QGridView::cellRect () const
       Returns the geometry of a cell in a cell's coordinate system. This is a convenience
       function useful in paintCell(). It is equivalent to QRect( 0, 0, cellWidth(), cellHeight()
       ).

       See also cellGeometry().

int QGridView::cellWidth () const
       Returns the width of a grid column. See the "cellWidth" property for details.

int QGridView::columnAt ( int x ) const
       Returns the number of the column at position x. x must be given in content coordinates.

       See also rowAt().

void QGridView::dimensionChange ( int oldNumRows, int oldNumCols ) [virtual protected]
       This change handler is called whenever any of the grid's dimensions change. oldNumRows and
       oldNumCols contain the old dimensions, numRows() and numCols() contain the new dimensions.

void QGridView::ensureCellVisible ( int row, int column )
       Ensures cell (row, column) is visible, scrolling the grid view if necessary.

QSize QGridView::gridSize () const
       Returns the size of the grid in pixels.

int QGridView::numCols () const
       Returns the number of columns in the grid. See the "numCols" property for details.

int QGridView::numRows () const
       Returns the number of rows in the grid. See the "numRows" property for details.

void QGridView::paintCell ( QPainter * p, int row, int col ) [pure virtual protected]
       This pure virtual function is called to paint the single cell at (row, col) using painter
       p. The painter must be open when paintCell() is called and must remain open.

       The coordinate system is translated so that the origin is at the top-left corner of the
       cell to be painted, i.e. cell coordinates. Do not scale or shear the coordinate system (or
       if you do, restore the transformation matrix before you return).

       The painter is not clipped by default in order to get maximum efficiency. If you want
       clipping, use

	   p->setClipRect( cellRect(), QPainter::CoordPainter );
	   //... your drawing code
	   p->setClipping( FALSE );

void QGridView::paintEmptyArea ( QPainter * p, int cx, int cy, int cw, int ch ) [virtual
       protected]
       This function fills the cw pixels wide and ch pixels high rectangle starting at position
       (cx, cy) with the background color using the painter p.

       paintEmptyArea() is invoked by drawContents() to erase or fill unused areas.

void QGridView::repaintCell ( int row, int column, bool erase = TRUE )
       Repaints cell (row, column).

       If erase is TRUE, Qt erases the area of the cell before the paintCell() call; otherwise no
       erasing takes place.

       See also QWidget::repaint().

int QGridView::rowAt ( int y ) const
       Returns the number of the row at position y. y must be given in content coordinates.

       See also columnAt().

void QGridView::setCellHeight ( int ) [virtual]
       Sets the height of a grid row. See the "cellHeight" property for details.

void QGridView::setCellWidth ( int ) [virtual]
       Sets the width of a grid column. See the "cellWidth" property for details.

void QGridView::setNumCols ( int ) [virtual]
       Sets the number of columns in the grid. See the "numCols" property for details.

void QGridView::setNumRows ( int ) [virtual]
       Sets the number of rows in the grid. See the "numRows" property for details.

void QGridView::updateCell ( int row, int column )
       Updates cell (row, column).

       See also QWidget::update().

   Property Documentation
int cellHeight
       This property holds the height of a grid row.

       All rows in a grid view have the same height.

       See also cellWidth.

       Set this property's value with setCellHeight() and get this property's value with
       cellHeight().

int cellWidth
       This property holds the width of a grid column.

       All columns in a grid view have the same width.

       See also cellHeight.

       Set this property's value with setCellWidth() and get this property's value with
       cellWidth().

int numCols
       This property holds the number of columns in the grid.

       Set this property's value with setNumCols() and get this property's value with numCols().

       See also numRows.

int numRows
       This property holds the number of rows in the grid.

       Set this property's value with setNumRows() and get this property's value with numRows().

       See also numCols.

SEE ALSO
       http://doc.trolltech.com/qgridview.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the license file
       included in the distribution for a complete license statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qgridview.3qt) and the Qt version (3.3.8).

Trolltech AS				 2 February 2007			   QGridView(3qt)
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