IlvFilledCircularGauge Class Reference

Graphic class. More...

#include <ilviews/graphics/cirgauge.h>

Inheritance diagram for IlvFilledCircularGauge:

List of all members.

Public Member Functions
	IlvFilledCircularGauge (IlvDisplay *display, const IlvRect &drawrect, IlFloat min=0, IlFloat max=100, IlFloat value=50, IlFloat start=0, IlFloat range=180, IlvPalette *palette=0)
	Constructor.
const char *	className () const
	Returns the class name of an object.
virtual IlvGraphic *	copy () const
	Copies this object.
virtual void	drawValue (IlvPort *, const IlvTransformer *t=0, const IlvRegion *clip=0) const
	Performs the drawing representing the current value of the gauge.
virtual IlvClassInfo *	getClassInfo () const
	Gets class information.
IlBoolean	isSubtypeOf (const IlvClassInfo *c) const
	Checks whether this object's class is a subclass.
IlBoolean	isSubtypeOf (const char *t) const
	Checks whether this object's class is a subclass of a given parent class.
virtual IlFloat	requestValue (const IlvPoint &, const IlvTransformer *, IlBoolean &) const
	Returns the value of the gauge associated with a given point.
Static Public Member Functions
static void	AddProperty (const IlSymbol *k, IlAny v)
	Adds a property to this object's class.
static IlAny	GetProperty (const IlSymbol *key, IlBoolean p=((IlBoolean) 0))
	Retrieves the property value associated with the key in this object's class.
static const IlvClassInfo *	HasProperty (const IlSymbol *key, IlBoolean p=((IlBoolean) 0))
	Checks for the existence of a property for this object's class hierarchy.
static IlvGraphic *	read (IlvInputFile &, IlvPalette *pal)
	Reads an object description from a file.
static IlBoolean	RemoveProperty (const IlSymbol *key)
	Removes a property from this object's class.
static IlBoolean	ReplaceProperty (const IlSymbol *k, IlAny v)
	Replaces a property in this object's class.

---

Detailed Description

Graphic class.

Library: views

A filled circular gauge displays the value it holds by means of a filled arc that fits in an ellipse as in the following figure.

- IlvFilledCircularGauge -

See also:

IlvRectangularGauge, IlvReliefGauge, IlvSliderGauge.

---

Constructor & Destructor Documentation

IlvFilledCircularGauge::IlvFilledCircularGauge	(	IlvDisplay *	display,
		const IlvRect &	drawrect,
		IlFloat	min = 0,
		IlFloat	max = 100,
		IlFloat	value = 50,
		IlFloat	start = 0,
		IlFloat	range = 180,
		IlvPalette *	palette = 0
	)

Constructor.

Parameters:

	display	The display instance.
	drawrect	Specifies the size of the ellipse, which is the size of the graphic object.
	min	The minimum value of the gauge.
	max	The maximum value of the gauge.
	value	The current value of the gauge.
	start	The starting angle of the arc.
	range	The angle range of the arc.
	palette	The palette used to draw the graphic object.

---

Member Function Documentation

static void IlvFilledCircularGauge::AddProperty	(	const IlSymbol *	key,
		IlAny	value
	)			[static]

Adds a property to this object's class.

This static function associates the given value with the given key for the class of this object only.

Parameters:

	key	The key to be associated.
	value	The value to be associated.

Reimplemented from IlvCircularGauge.

const char* IlvFilledCircularGauge::className

(

)

const

Returns the class name of an object.

This method is equivalent to getClassInfo()->getClassName().

Returns:

The class name of the object. For example, for an IlvRectangle object, the className function returns "IlvRectangle".

Reimplemented from IlvCircularGauge.

virtual IlvGraphic* IlvFilledCircularGauge::copy

(

)

const [virtual]

Copies this object.

Allocates and returns a copy of this object. If the object is composite, the implementation of this member function makes a copy of the object's components.

Returns:

A copy of the object.

See also:

IlvPredefinedIOMembers.

Reimplemented from IlvCircularGauge.

virtual void IlvFilledCircularGauge::drawValue	(	IlvPort *	,
		const IlvTransformer *	t = 0,
		const IlvRegion *	clip = 0
	)			const [virtual]

Performs the drawing representing the current value of the gauge.

Called by the member function draw and interactors that connect to it. Draws the part of the gauge that indicates its value (such as the hand of a watch).

Parameters:

	dst	The destination port.
	t	The transformer to apply to the drawing.
	clip	The clipping region.

Reimplemented from IlvCircularGauge.

virtual IlvClassInfo* IlvFilledCircularGauge::getClassInfo

(

)

const [virtual]

Gets class information.

Returns a pointer to the IlvClassInfo object associated with this object's class.

Returns:

A pointer to the class information object of the class of this object.

Reimplemented from IlvCircularGauge.

static IlAny IlvFilledCircularGauge::GetProperty	(	const IlSymbol *	key,
		IlBoolean	checkSuperClass = ((IlBoolean) 0)
	)			[static]

Retrieves the property value associated with the key in this object's class.

Retrieves the property value associated with the property name key. If the property cannot be found in the class of this object, and if checkSuperClass is set to IlTrue, then the function operates iteratively on each superclass until the property is found. If the property cannot be found, then 0 is returned.

Parameters:

	key	The key with which the property value is associated.
	checkSuperClass	IlTrue specifies iterative search on superclasses.

Returns:

The property value associated with the proper name key, or 0.

Reimplemented from IlvCircularGauge.

static const IlvClassInfo* IlvFilledCircularGauge::HasProperty	(	const IlSymbol *	key,
		IlBoolean	checkSuperClass = ((IlBoolean) 0)
	)			[static]

Checks for the existence of a property for this object's class hierarchy.

Retrieves a pointer to the IlvClassInfo that indicates a class where the key property exists. If the returned value is non-0, then this property actually exists for this class. If this is not the case and if checkSuperClass is set to IlTrue, then the function operates iteratively on each superclass until a match is found. If the property cannot be found, then 0 is returned.

Parameters:

	key	The key with which the property value is associated.
	checkSuperClass	IlTrue specifies iterative search on superclasses.

Returns:

A pointer to the ClassInfo that indicates a class where the key property exists, or 0.

Reimplemented from IlvCircularGauge.

IlBoolean IlvFilledCircularGauge::isSubtypeOf

(

const IlvClassInfo *

classInfo

)

const

Checks whether this object's class is a subclass.

This method is equivalent to getClassInfo()->isSubtypeOf(classInfo).

Parameters:

classInfo

The name of a class on which the object's class is tested.

Returns:

Either IlTrue or IlFalse, depending on whether or not this object's class is a subclass of the class indicated by classInfo.

Reimplemented from IlvCircularGauge.

IlBoolean IlvFilledCircularGauge::isSubtypeOf

(

const char *

parentClass

)

const

Checks whether this object's class is a subclass of a given parent class.

This method is equivalent to getClassInfo()->isSubtypeOf(parentClass).

Parameters:

parentClass

A string representing the parent class.

Returns:

Either IlTrue or IlFalse, depending on whether or not this object's class inherits parentClass attributes. The parentClass parameter should be a string representing the class name of an IlvGraphic subclass. A call to this member function for a given class instance returns IlTrue if given the name of its class.

Reimplemented from IlvCircularGauge.

static IlvGraphic* IlvFilledCircularGauge::read	(	IlvInputFile &	file,
		IlvPalette *	palette
	)			[static]

Reads an object description from a file.

Reads an object description from the file input, given the palette graphic attributes. 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, read should be equivalent to:

 IlvGraphic*
 MyClass::read(IlvInputFile& file, IlvPalette* palette)
 {
     return new MyClass(file, palette);
 }

In the following example, the static member function read of the IlvLabel class could have the following form:

 IlvGraphic*
 IlvLabel::read(IlvInputFile& file, IlvPalette* pal)
 {
     IlvPoint pos;
     file.getStream() >> pos;     // Read the position field
     return new IlvLabel(pal->getDisplay(), pos,
     IlvReadString(file.getStream()), pal);
 }

Parameters:

	file	The name of the file to be read from.
	palette	The name of the palette for the object.

See also:

DeclareTypeInfoRO, DeclareTypeInfo, IlvPredefinedIOMembers.

Warning:

[note] The read method is not capitalized like other static methods so that it is consistent with the write method.

Reimplemented from IlvCircularGauge.

static IlBoolean IlvFilledCircularGauge::RemoveProperty

(

const IlSymbol *

key

)

[static]

Removes a property from this object's class.

This static function removes the indicated property to the class of this object.

Parameters:

key

The key property to be removed.

Returns:

IlTrue if the key property was actually found, or IlFalse otherwise.

Reimplemented from IlvCircularGauge.

static IlBoolean IlvFilledCircularGauge::ReplaceProperty	(	const IlSymbol *	key,
		IlAny	value
	)			[static]

Replaces a property in this object's class.

This static function replaces the indicated property value to the class of this object.

Parameters:

	key	The key to be replaced.
	value	The value to be replaced.

Returns:

IlTrue if the key property was actually found, or IlFalse otherwise.

Reimplemented from IlvCircularGauge.

virtual IlFloat IlvFilledCircularGauge::requestValue	(	const IlvPoint &	point,
		const IlvTransformer *	t,
		IlBoolean &	connect
	)			const [virtual]

Returns the value of the gauge associated with a given point.

Returns:

the value stored in this gauge if its moving part was at the specified location. If the point is outside the object bounding box, the function returns a reasonable value (the closest point on the object bounding box is considered).

Parameters:

	point	The point. If a transformer is specified, the point is considered to be transformed, i.e. expressed in the transformed coordinate system.
	t	The transformer.
	connect	If IlTrue, the provided point indicates a connection to the gauge. Mostly, this means that the point is located on the moving part of the gauge.

Reimplemented from IlvCircularGauge.