IlvValue Class Reference

Graphic related class. More...

#include <ilviews/base/value.h>

Public Member Functions
	IlvValue (const char *name, const char *s)
	Constructor. More...
	IlvValue (const char *name, IlBoolean b)
	Constructor. More...
	IlvValue (const char *name, IlDouble d)
	Constructor. More...
	IlvValue (const char *name, IlFloat f)
	Constructor. More...
	IlvValue (const char *name, IlInt i)
	Constructor. More...
	IlvValue (const char *name, IlUInt u)
	Constructor. More...
	IlvValue (const char *name, IlvAntialiasingMode f)
	Constructor. More...
	IlvValue (const char *name, IlvArcMode f)
	Constructor. More...
	IlvValue (const char *name, IlvBitmap *b)
	Constructor. More...
	IlvValue (const char *name, IlvColor *c)
	Verbose: More...
	IlvValue (const char *name, IlvColorPattern *p)
	Constructor. More...
	IlvValue (const char *name, IlvDirection d)
	Constructor. More...
	IlvValue (const char *name, IlvFillRule f)
	Constructor. More...
	IlvValue (const char *name, IlvFillStyle f)
	Constructor. More...
	IlvValue (const char *name, IlvFont *f)
	Constructor. More...
	IlvValue (const char *name, IlvGradientPattern *p)
	Constructor. More...
	IlvValue (const char *name, IlvLineStyle *l)
	Constructor. More...
	IlvValue (const char *name, IlvPattern *p)
	Constructor. More...
	IlvValue (const char *name=0)
	Constructor. More...
IlSymbol *	getName () const
	Gets the name of the accessor of the IlvValue. More...
const IlvValueTypeClass *	getType () const
	Gets the type of the IlvValue. More...
	operator const char * () const
	Returns a copy of a string representation of this object in a. More...
	operator IlBoolean () const
	Operator to transform the content of the IlvValue to the IlBoolean type. More...
	operator IlDouble () const
	Operator to transform the content of the IlvValue to the IlDouble type. More...
	operator IlFloat () const
	Operator to transform the content of the IlvValue to the IlFloat type. More...
	operator IlInt () const
	Operator to transform the content of the IlvValue to the IlInt type. More...
	operator IlUInt () const
	Operator to transform the content of the IlvValue to the IlUInt type. More...
	operator IlvAntialiasingMode () const
	Operator to transform the content of the IlvValue to the IlvAntialiasingMode type. More...
	operator IlvArcMode () const
	Operator to transform the content of the IlvValue to the IlvArcMode type. More...
	operator IlvDirection () const
	Operator to transform the content of the IlvValue to the IlvDirection type. More...
	operator IlvFillRule () const
	Operator to transform the content of the IlvValue to the IlvFillRule type. More...
	operator IlvFillStyle () const
	Operator to transform the content of the IlvValue to the IlvIlvFillStyle type. More...
IlvBitmap *	toIlvBitmap (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvBitmap. More...
IlvColor *	toIlvColor (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvColor. More...
IlvColorPattern *	toIlvColorPattern (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvColorPattern. More...
IlvFont *	toIlvFont (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvFont. More...
IlvGradientPattern *	toIlvGradientPattern (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvGradientPattern. More...
IlvLineStyle *	toIlvLineStyle (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvLineStyle. More...
IlvPattern *	toIlvPattern (IlvDisplay *display) const
	Returns the content of the IlvValue as an IlvPattern. More...

Detailed Description

Graphic related class.

Library: xviews or winviews or mviews (mutually exclusive)

The IlvValue class allows you to query and change the attributes of an object. Instances of this class are used in the methods IlvValueInterface::queryValue(), IlvValueInterface::changeValue(), and in IlvValueInterface subclasses, such as IlvGraphic, IlvView and more.
An IlvValue instance is defined by three things:

• the accessor name, for example "label" to access the label of a button,
• a value,
• a type that corresponds to the type of the value.

To query a value from a graphic object, you create an instance of IlvValue with the name of the accessor and call the IlvGraphic::queryValue() method. This method fills the value of IlvValue with a copy of the value inside the graphic object.
To change the value of a graphic object, create an instance of IlvValue with the name of the accessor and a new value, and pass this IlvValue to the IlvGraphic::changeValue() method.

Note

When initializing an IlvValue with a numeric constant, ensure that the type of the constant is explicitly mentioned, or the numeric constant will default to IlBoolean with the value IlFalse or IlTrue.
For example, if you use the expression IlvValue v("x", 10); the value's type defaults to IlBoolean, thus 10 becomes IlTrue. To keep the value 10, this expression should be replaced with the following:

IlvValue v("x", (IlInt)10);

or better:

const IlInt position = 10;
IlvValue v("x", position);

The possible types for an IlvValue are:

Type identifier	Corresponding type
IlvValueNoType	empty IlvValue
IlvValueBooleanType	IlBoolean
IlvValueIntType	IlInt
IlvValueUIntType	IlUInt
IlvValueFloatType	IlFloat
IlvValueDoubleType	IlDouble
IlvValueStringType	char*
IlvValueDirectionType	IlvDirection
IlvValueColorType	IlvColor
IlvValueFontType	IlvFont
IlvValuePatternType	IlvPattern
IlvValueColorPatternType	IlvColorPattern
IlvValueGradientPatternType	IlvGradientPattern
IlvValueLineStyleType	IlvLineStyle
IlvValueFillStyleType	IlvFillStyle
IlvValueFillRuleType	IlvFillRule
IlvValueArcModeType	IlvArcMode
IlvValueAntialiasingModeType	IlvAntialiasingMode
IlvValueBitmapType	IlvBitmap
IlvValueStringArrayType	array of char*
IlvValueUIntArrayType	array of IlUInt
IlvValueMenuItemArrayType	array of IlvMenuItem
IlvValueMatrixItemArrayType	array of IlvMatrixItem
IlvValueNotebookPageArrayType	array of IlvNotebookPage

The possible values for the accessors are described in each class where accessors are defined.

Constructor & Destructor Documentation

IlvValue() [1/19]

IlvValue::IlvValue

(

const char *

name = 0

)

Constructor.

This constructor creates an empty IlvValue for the accessor name. The instance is then used in the following way:

IlvValue arg("label");
char* label = (const char*)button->queryValue(arg);

Parameters

name	The accessor name.

IlvValue() [2/19]

IlvValue::IlvValue	(	const char *	name,
		IlInt	i
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("value", (IlInt)12);
button->changeValue(arg);

Parameters

name	The accessor name.
i	The new value that you want to set to the object.

IlvValue() [3/19]

IlvValue::IlvValue	(	const char *	name,
		IlUInt	u
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("cardinal", ((IlUInt)12);
button->changeValue(arg);

Parameters

name	The accessor name.
u	The new value that you want to set to the object.

IlvValue() [4/19]

IlvValue::IlvValue	(	const char *	name,
		IlFloat	f
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("value", (IlFloat)1.2);
button->changeValue(arg);

Parameters

name	The accessor name.
f	The new value that you want to set to the object.

IlvValue() [5/19]

IlvValue::IlvValue	(	const char *	name,
		IlDouble	d
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("length", (IlDouble)12.34);
button->changeValue(arg);

Parameters

name	The accessor name.
d	The new value that you want to set to the graphic object

IlvValue() [6/19]

IlvValue::IlvValue	(	const char *	name,
		const char *	s
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("name", "TheName");
button->changeValue(arg);

Parameters

name	The accessor name.
s	The new value that you want to set to the graphic object

IlvValue() [7/19]

IlvValue::IlvValue	(	const char *	name,
		IlBoolean	b
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("flag", IlTrue);
button->changeValue(arg);

Parameters

name	The accessor name.
b	The new value that you want to set to the object

IlvValue() [8/19]

IlvValue::IlvValue	(	const char *	name,
		IlvColor *	c
	)

Verbose:

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("background", display->getColor("blue"));
button->changeValue(arg);

Parameters

name	The accessor name.
c	The new value that you want to set to the object

IlvValue() [9/19]

IlvValue::IlvValue	(	const char *	name,
		IlvFont *	f
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("font", display->getFont("%helvetica-12"));
=button->changeValue(arg);

Parameters

name	The accessor name.
f	The new value that you want to set to the object

IlvValue() [10/19]

IlvValue::IlvValue	(	const char *	name,
		IlvPattern *	p
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("pattern", display->getPattern("solid"));
button->changeValue(arg);

Parameters

name	The accessor name.
p	The new value that you want to set to the object

IlvValue() [11/19]

IlvValue::IlvValue	(	const char *	name,
		IlvColorPattern *	p
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("colorPattern", display->getColorPattern("ThePattern"));
button->changeValue(arg);

Parameters

name	The accessor name.
p	The new value that you want to set to the object

IlvValue() [12/19]

IlvValue::IlvValue	(	const char *	name,
		IlvGradientPattern *	p
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("gradientPattern", display->getGradientPattern("ThePattern"));
button->changeValue(arg);

Parameters

name	The accessor name.
p	The new value that you want to set to the object

IlvValue() [13/19]

IlvValue::IlvValue	(	const char *	name,
		IlvLineStyle *	l
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("style", display->getLineStyle("dash"));
button->changeValue(arg);

Parameters

name	The accessor name.
l	The new value that you want to set to the object

IlvValue() [14/19]

IlvValue::IlvValue	(	const char *	name,
		IlvFillStyle	f
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("style", IlvFillMaskPattern);
button->changeValue(arg);

Parameters

name	The accessor name.
f	The new value that you want to set to the object

IlvValue() [15/19]

IlvValue::IlvValue	(	const char *	name,
		IlvFillRule	f
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("rule", IlvWindingRule);
button->changeValue(arg);

Parameters

name	The accessor name.
f	The new value that you want to set to the object

IlvValue() [16/19]

IlvValue::IlvValue	(	const char *	name,
		IlvArcMode	f
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("arcMode", IlvArcChord);
button->changeValue(arg);

Parameters

name	The accessor name.
f	The new value that you want to set to the object

IlvValue() [17/19]

IlvValue::IlvValue	(	const char *	name,
		IlvAntialiasingMode	f
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("antialiasingMode", IlvModeUseAntialiasing);
graphic->changeValue(arg);

Parameters

name	The accessor name.
f	The new value that you want to set to the object

IlvValue() [18/19]

IlvValue::IlvValue	(	const char *	name,
		IlvDirection	d
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("direction", IlvLeft);
button->changeValue(arg);

Parameters

name	The accessor name.
d	The new value that you want to set to the object

IlvValue() [19/19]

IlvValue::IlvValue	(	const char *	name,
		IlvBitmap *	b
	)

Constructor.

This constructor creates an IlvValue instance for the accessor name. It can be used in the following way:

IlvValue arg("image", display->getBitmap("map.jpg"));
button->changeValue(arg);

Parameters

name	The accessor name.
b	The new value that you want to set to the object

Member Function Documentation

getName()

IlSymbol* IlvValue::getName

(

)

const

Gets the name of the accessor of the IlvValue.

Returns

The name of the accessor of the IlvValue.

getType()

const IlvValueTypeClass* IlvValue::getType

(

)

const

Gets the type of the IlvValue.

Returns the type of the IlvValue. The returned value is one of the types possible for the class (see the description of the class).

Returns

The type of the IlvValue.

operator const char *()

IlvValue::operator const char *

(

)

const

Returns a copy of a string representation of this object in a.

static buffer. This operator returns a copy of a string representation of this object in a static buffer. The user must not modify or delete this buffer. The returned string may be overwritten by any subsequent call to the library.

operator IlBoolean()

IlvValue::operator IlBoolean

(

)

const

Operator to transform the content of the IlvValue to the IlBoolean type.

This operator allows you to transform the content of the IlvValue to the IlBoolean type.

operator IlDouble()

IlvValue::operator IlDouble

(

)

const

Operator to transform the content of the IlvValue to the IlDouble type.

This operator allows you to transform the content of the IlvValue to the IlDouble type.

operator IlFloat()

IlvValue::operator IlFloat

(

)

const

Operator to transform the content of the IlvValue to the IlFloat type.

This operator allows you to transform the content of the IlvValue to the IlFloat type.

operator IlInt()

IlvValue::operator IlInt

(

)

const

Operator to transform the content of the IlvValue to the IlInt type.

This operator allows you to transform the content of the IlvValue to the IlInt type.

operator IlUInt()

IlvValue::operator IlUInt

(

)

const

Operator to transform the content of the IlvValue to the IlUInt type.

This operator allows you to transform the content of the IlvValue to the IlUInt type.

operator IlvAntialiasingMode()

IlvValue::operator IlvAntialiasingMode

(

)

const

Operator to transform the content of the IlvValue to the IlvAntialiasingMode type.

This operator allows you to transform the content of the IlvValue to the IlvAntialiasingMode type.

operator IlvArcMode()

IlvValue::operator IlvArcMode

(

)

const

Operator to transform the content of the IlvValue to the IlvArcMode type.

This operator allows you to transform the content of the IlvValue to the IlvArcMode type.

operator IlvDirection()

IlvValue::operator IlvDirection

(

)

const

Operator to transform the content of the IlvValue to the IlvDirection type.

This operator allows you to transform the content of the IlvValue to the IlvDirection type.

operator IlvFillRule()

IlvValue::operator IlvFillRule

(

)

const

Operator to transform the content of the IlvValue to the IlvFillRule type.

This operator allows you to transform the content of the IlvValue to the IlvFillRule type.

operator IlvFillStyle()

IlvValue::operator IlvFillStyle

(

)

const

Operator to transform the content of the IlvValue to the IlvIlvFillStyle type.

This operator allows you to transform the content of the IlvValue to the IlvIlvFillStyle type.

toIlvBitmap()

IlvBitmap* IlvValue::toIlvBitmap

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvBitmap.

Parameters

display

The display that creates the bitmap.

Returns

The content of the IlvValue as an IlvBitmap.

toIlvColor()

IlvColor* IlvValue::toIlvColor

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvColor.

Parameters

display

The display that creates the color.

Returns

The content of the IlvValue as an IlvColor.

toIlvColorPattern()

IlvColorPattern* IlvValue::toIlvColorPattern

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvColorPattern.

Parameters

display

The display that creates the color-pattern.

Returns

The content of the IlvValue as an IlvColorPattern

toIlvFont()

IlvFont* IlvValue::toIlvFont

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvFont.

Parameters

display

The display that creates the font.

Returns

The content of the IlvValue as an IlvFont.

toIlvGradientPattern()

IlvGradientPattern* IlvValue::toIlvGradientPattern

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvGradientPattern.

Parameters

display

The display that creates the gradient-pattern.

Returns

The content of the IlvValue as an IlvGradientPattern

toIlvLineStyle()

IlvLineStyle* IlvValue::toIlvLineStyle

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvLineStyle.

Parameters

display

The display that creates the line style.

Returns

The content of the IlvValue as an IlvLineStyle.

toIlvPattern()

IlvPattern* IlvValue::toIlvPattern

(

IlvDisplay *

display

)

const

Returns the content of the IlvValue as an IlvPattern.

Parameters

display

The display that creates the pattern.

Returns

The content of the IlvValue as an IlvPattern.