IlvAbstractMatrixItem Class Reference

Matrix item class. More...

#include <ilviews/gadgets/matrix.h>

Inheritance diagram for IlvAbstractMatrixItem:

Public Member Functions
virtual IlvAbstractMatrixItem *	copy () const
	Copies this object. More...
virtual void	draw (const IlvMatrix *matrix, IlUShort col, IlUShort row, IlvPort *dst, const IlvRect &bbox, const IlvRect *clip) const
	Is called to draw the matrix item. More...
void	drawLabel (const char *label, const IlvMatrix *matrix, IlUShort col, IlUShort row, IlvPort *dst, const IlvRect &bbox, const IlvRect *clip=0) const
	Is called to draw the label of the matrix item. More...
virtual const char *	getLabel () const
	Returns the label that identifies this matrix item. More...
virtual IlBoolean	handleSelectionDrawing () const
	Indicates whether the selection drawing is handled by the matrix item. More...
virtual void	minimumSize (const IlvMatrix *matrix, IlvDim &width, IlvDim &height) const
	Returns the preferred size of the item. More...
virtual void	setBackground (IlvColor *color)
	Sets the background color of this matrix item. More...
virtual void	setFont (IlvFont *font)
	Sets the font of this matrix item. More...
virtual void	setForeground (IlvColor *color)
	Sets the foreground color of this matrix item. More...
virtual void	setLabel (const char *label, IlBoolean copy=IlTrue)
	Sets the label of the matrix item. More...
virtual void	setPalette (IlvPalette *palette)
	Sets the palette of this matrix item. More...
virtual void	write (IlvOutputFile &file) const
	Writes an object description to a file. More...

Static Public Member Functions
static IlvAbstractMatrixItem *	readItem (IlvInputFile &file, IlvDisplay *display)
	Reads an object description from a file. More...

Friends
class	IlvMatrix

Detailed Description

Matrix item class.

Library: ilvadvgdt

The objects stored in a matrix are called matrix items. To handle these objects, the IlvMatrix class uses the IlvAbstractMatrixItem class, which encapsulates the matrix item parameters and behavior. Most of the member functions of this class are virtual. Each item stored and displayed in a matrix must be an instance of a subclass of IlvAbstractMatrixItem. The default implementations of the setPalette(), setBackground(), setForeground(), setFont(), and setLabel() member functions in this abstract class, do nothing. Items may have specific client data. This data is managed at the IlvMatrix level by the member function IlvMatrix::getItemData and IlvMatrix::setItemData.

See also

IlvMatrix, IlvBitmapMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, IlvFilledLabelMatrixItem, IlvFloatMatrixItem, IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvIntMatrixItem, IlvLabelMatrixItem, IlvIntMatrixItem.

Accessors

Accessors provide a scriptable and uniform way to inspect and modify an object by using its base class methods IlvValueInterface::queryValue(), IlvValueInterface::queryValues(), IlvValueInterface::changeValue(), IlvValueInterface::changeValues(). This class inherits the accessors of its superclass IlvValueInterface and adds the following ones:

Name	Return type	Equivalent methods
copy()	Object	copy()

Member Function Documentation

virtual IlvAbstractMatrixItem* IlvAbstractMatrixItem::copy ( ) const

virtual

Copies this object.

Allocates and returns a copy of this object.

Returns

A copy of the object.

See also

IlvPredefinedMatrixItemIOMembers().

Reimplemented in IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvDoubleMatrixItem, IlvFloatMatrixItem, IlvFilledIntMatrixItem, IlvIntMatrixItem, IlvBitmapMatrixItem, IlvFilledLabelMatrixItem, and IlvLabelMatrixItem.

virtual void IlvAbstractMatrixItem::draw ( const IlvMatrix *  matrix, IlUShort  col, IlUShort  row, IlvPort *  dst, const IlvRect &  bbox, const IlvRect *  clip  ) const

virtual

Is called to draw the matrix item.

The default implementation of the method calls IlvAbstractMatrixItem::drawLabel.

Parameters

matrix	The matrix to which the item belongs.
col	The column where the matrix item is located.
row	The row where the matrix item is located.
dst	The destination drawing port.
bbox	The bounding box of the matrix item.
clip	The clipping area.

See also

IlvAbstractMatrix::drawItem, drawLabel().

Reimplemented in IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, IlvBitmapMatrixItem, and IlvFilledLabelMatrixItem.

void IlvAbstractMatrixItem::drawLabel	(	const char *	label,
		const IlvMatrix *	matrix,
		IlUShort	col,
		IlUShort	row,
		IlvPort *	dst,
		const IlvRect &	bbox,
		const IlvRect *	clip = 0
	)		const

Is called to draw the label of the matrix item.

Parameters

label	The label to be drawn.
matrix	The matrix to which the item belongs.
col	The column where the matrix item is located.
row	The row where the matrix item is located.
dst	The destination drawing port.
bbox	The bounding box of the matrix item.
clip	The clipping area.

See also

IlvAbstractMatrix::drawItem, draw().

virtual const char* IlvAbstractMatrixItem::getLabel ( ) const

virtual

Returns the label that identifies this matrix item.

Returns

The label that identifies this matrix item. The returned string must not be deleted or modified.

See also

setLabel().

Reimplemented in IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvDoubleMatrixItem, IlvFloatMatrixItem, IlvFilledIntMatrixItem, IlvIntMatrixItem, IlvBitmapMatrixItem, IlvFilledLabelMatrixItem, and IlvLabelMatrixItem.

virtual IlBoolean IlvAbstractMatrixItem::handleSelectionDrawing ( ) const

virtual

Indicates whether the selection drawing is handled by the matrix item.

Returns

IlTrue if the selection drawing is handled by the matrix item and not by the matrix to which it belongs. In this case, the member function IlvMatrix::drawSelection() is not called. The default implementation returns IlFalse.

See also

IlvMatrix::drawSelection().

Reimplemented in IlvGadgetItemMatrixItem, and IlvGraphicMatrixItem.

virtual void IlvAbstractMatrixItem::minimumSize ( const IlvMatrix *  matrix, IlvDim &  width, IlvDim &  height  ) const

virtual

Returns the preferred size of the item.

The preferred size is the size that the item must have for its content to be entirely visible. Uses width and height to return the preferred size of this item when stored in matrix. This method is called by the member functions IlvMatrix::getColumnFittingSize and IlvMatrix::getRowFittingSize.

Parameters

matrix	The matrix to which the item belongs.
width	The returned preferred width of the item.
height	The returned preferred height of the item.

See also

IlvMatrix::getColumnFittingSize(), IlvMatrix::getRowFittingSize().

Reimplemented in IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, IlvBitmapMatrixItem, and IlvFilledLabelMatrixItem.

static IlvAbstractMatrixItem* IlvAbstractMatrixItem::readItem ( IlvInputFile &  file, IlvDisplay *  display  )

static

Reads an object description from a file.

Reads an object description from the file input. It reads the information that was saved by the member function write() to be able to create a new instance of this object. Usually, because of the availability of the constructor that expects an IlvInputFile, readItem() should be equivalent to :

IlvAbstractMatrixItem*
MyClass::readItem(IlvInputFile& file, IlvDisplay* display)
{
    return new MyClass(file, display);
}

Parameters

file	The file to be read from.
display	The display used to create the object.

See also

DeclareMatrixItemInfoRO(), DeclareMatrixItemInfo(), IlvPredefinedMatrixItemIOMembers().

Note

The readItem() method is not capitalized like other static methods so that it is consistent with the write() method.

virtual void IlvAbstractMatrixItem::setBackground ( IlvColor *  color )

virtual

Sets the background color of this matrix item.

The default implementation does nothing.

Parameters

color

The new background color.

See also

setPalette(), setForeground(), setFont(), IlvFilledLabelMatrixItem, IlvFilledIntMatrixItem, IlvFilledFloatMatrixItem, IlvFilledDoubleMatrixItem.

Reimplemented in IlvGadgetItemMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, IlvBitmapMatrixItem, and IlvFilledLabelMatrixItem.

virtual void IlvAbstractMatrixItem::setFont ( IlvFont *  font )

virtual

Sets the font of this matrix item.

The default implementation does nothing.

Parameters

font	The new font.

See also

setPalette(), setForeground(), setBackground(), IlvFilledLabelMatrixItem, IlvFilledIntMatrixItem, IlvFilledFloatMatrixItem, IlvFilledDoubleMatrixItem.

Reimplemented in IlvGadgetItemMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, and IlvFilledLabelMatrixItem.

virtual void IlvAbstractMatrixItem::setForeground ( IlvColor *  color )

virtual

Sets the foreground color of this matrix item.

The default implementation does nothing.

Parameters

color

The new foreground color.

See also

setPalette(), setBackground(), setFont(), IlvFilledLabelMatrixItem, IlvFilledIntMatrixItem, IlvFilledFloatMatrixItem, IlvFilledDoubleMatrixItem.

Reimplemented in IlvGadgetItemMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, IlvBitmapMatrixItem, and IlvFilledLabelMatrixItem.

virtual void IlvAbstractMatrixItem::setLabel ( const char *  label, IlBoolean  copy = IlTrue  )

virtual

Sets the label of the matrix item.

Parameters

label	The label of the matrix item.
copy	Specifies whether a label should be copied. If the value is IlFalse, then you must allocate some memory for the label because in any case the label characters are deleted from the memory by the IlvAbstractMatrixItem.

See also

getLabel().

Reimplemented in IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvDoubleMatrixItem, IlvFloatMatrixItem, IlvFilledIntMatrixItem, IlvIntMatrixItem, IlvBitmapMatrixItem, IlvFilledLabelMatrixItem, and IlvLabelMatrixItem.

virtual void IlvAbstractMatrixItem::setPalette ( IlvPalette *  palette )

virtual

Sets the palette of this matrix item.

The default implementation does nothing.

Parameters

palette

The new palette.

See also

setBackground(), setForeground(), setFont(), IlvFilledLabelMatrixItem, IlvFilledIntMatrixItem, IlvFilledFloatMatrixItem, IlvFilledDoubleMatrixItem.

Reimplemented in IlvGadgetItemMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvFilledIntMatrixItem, IlvBitmapMatrixItem, and IlvFilledLabelMatrixItem.

virtual void IlvAbstractMatrixItem::write ( IlvOutputFile &  file ) const

virtual

Writes an object description to a file.

Writes out, in a file, the object description. This description contains all the information necessary to create an exact copy of this object by means of the member function readItem().

Parameters

file	The name of the file to be written to.

See also

DeclareMatrixItemInfoRO(), DeclareMatrixItemInfo(), IlvPredefinedMatrixItemIOMembers().

Reimplemented in IlvGadgetItemMatrixItem, IlvGadgetMatrixItem, IlvGraphicMatrixItem, IlvFilledDoubleMatrixItem, IlvFilledFloatMatrixItem, IlvDoubleMatrixItem, IlvFloatMatrixItem, IlvFilledIntMatrixItem, IlvIntMatrixItem, IlvBitmapMatrixItem, IlvFilledLabelMatrixItem, and IlvLabelMatrixItem.