Gadget class. More...

#include <ilviews/gadgets/spinbox.h>

Inheritance diagram for IlvSpinBox:

Public Member Functions
	IlvSpinBox (IlvDisplay display, const IlvRect &rect, IlvOrientation arrowOrientation=IlvVertical, IlUShort thickness=IlvDefaultGadgetThickness, IlvPalette palette=0)
	Constructor. More...

	IlvSpinBox (IlvDisplay display, const IlvPoint &point, IlvOrientation arrowOrientation=IlvVertical, IlUShort thickness=IlvDefaultGadgetThickness, IlvPalette palette=0)
	Constructor. More...

void	addField (IlvTextField field, const char *values, IlUShort count, IlUShort pos, IlBoolean loop, IlUShort at=0, IlBoolean redraw=IlFalse)
	Adds a text field to the spin box. More...

void	addField (IlvNumberField *field, IlDouble value, IlDouble increment, IlBoolean loop, IlUShort at=0, IlBoolean redraw=IlFalse)
	Adds a numeric field to the spin box. More...

void	addLabel (IlvTextField field, const char label)
	Adds a new string to the predefined strings associated with the specified text field. More...

void	addObject (IlvGraphic *object, IlUShort at=0, IlBoolean redraw=IlFalse)
	Adds the specified object to the spin box as a decoration. More...

virtual void	computeArrowRects (IlvRect &decrArrow, IlvRect &incrArrow, IlvRect &internal, const IlvTransformer *t) const
	Is called to compute the bounding boxes of spin box items. More...

IlvTextField *	getActiveField () const
	Returns the field (numeric field or text field) that is currently active. More...

IlvOrientation	getArrowLayout () const
	Returns the position of the spin box arrows. More...

IlvOrientation	getArrowOrientation () const
	Returns the orientation of the spin box arrows. More...

IlvArrowButton *	getDecrementButton () const
	Returns a pointer to the decrement button. More...

IlDouble	getIncrement (IlvNumberField *field) const
	Returns the increment value set for the specified numeric field. More...

IlvArrowButton *	getIncrementButton () const
	Returns a pointer to the increment button. More...

const char *	getLabel (IlvTextField *field) const
	Returns the label displayed by the specified text field. More...

const char **	getLabels (IlvTextField *field) const
	Returns an array containing the predefined strings associated with the specified text field. More...

IlUShort	getLabelsCount (IlvTextField *field) const
	Returns the number of predefined strings associated with the specified text field. More...

IlvGraphic *	getObject (IlUShort index) const
	Returns the graphic object specified by index. More...

IlUShort	getObjectPosition (IlvGraphic *object) const
	Returns the index of the specified graphic object. More...

IlUInt	getPeriod () const
	Returns the period of time that elapses before a value is incremented or decremented when the user clicks on a spin box arrow. More...

IlUShort	getPosition (IlvTextField *field, IlBoolean &error) const
	Returns the index of the label of the specified text field in the predefined strings array. More...

IlDouble	getValue (IlvNumberField *field, IlBoolean &error) const
	Returns the value of the specified numeric field. More...

IlBoolean	isDecrementSensitive () const
	Indicates whether the increment button is sensitive. More...

IlBoolean	isField (IlvGraphic *object) const
	Checks whether the specified object is a field of the spin box. More...

IlBoolean	isIncrementSensitive () const
	Indicates whether the increment button is sensitive. More...

IlBoolean	isLoop (IlvTextField *field) const
	Indicates whether the specified field is in the loop mode. More...

IlUShort	objectCount () const
	Returns the number of graphic objects (fields and decorations) that the spin box contains. More...

void	removeLabel (IlvTextField *field, IlShort index)
	Removes the predefined string located at the specified index from the specified text field. More...

void	removeObject (IlvGraphic *object, IlBoolean redraw=IlFalse)
	Removes the specified object from the spin box. More...

void	setArrowLayout (IlvOrientation orientation, IlBoolean redraw=IlFalse)
	Sets the position of the spin box arrows. More...

void	setArrowOrientation (IlvOrientation orientation, IlBoolean redraw=IlFalse)
	Sets the orientation of the spin box arrows. More...

void	setDecrementSensitive (IlBoolean value, IlBoolean redraw=IlFalse)
	Specifies whether the decrement button should be sensitive. More...

void	setIncrement (IlvNumberField *field, IlDouble value)
	Sets the increment value of the specified numeric field. More...

void	setIncrementSensitive (IlBoolean value, IlBoolean redraw=IlFalse)
	Specifies whether the increment button should be sensitive. More...

void	setLabel (IlvTextField field, const char label, IlBoolean redraw=IlFalse)
	Sets the label of the specified text field. More...

void	setLabel (IlvTextField *field, IlUShort index, IlBoolean redraw=IlFalse)
	Sets the label of the specified text field to one of its predefined strings. More...

void	setLoop (IlvTextField *field, IlBoolean loop)
	Specifies whether the specified field should operate in the loop mode. More...

void	setPeriod (IlUInt period)
	Sets the period of time that elapses before a value is incremented or decremented when the user clicks on a spin box arrow. More...

IlBoolean	setValue (IlvNumberField *field, IlDouble value, IlBoolean redraw=IlFalse)
	Sets the value of the specified numeric field. More...

Static Public Member Functions
static IlSymbol *	DecrementCallbackType ()
	Returns the callback type of the Decrement callback. More...

static IlSymbol *	IncrementCallbackType ()
	Returns the callback type of the Increment callback. More...

Friends
class	IlvDefaultSpinBoxLFHandler

Detailed Description

Gadget class.

Library: ilvadvgdt

The IlvSpinBox class defines a composite gadget made up of two buttons and several fields of the type IlvTextField) or IlvNumberField. For text fields, you can define a list of predefined string values which the user can spin through. For numeric fields, you can define a set of numeric values which the user can increment or decrement using the buttons, within the specified range.

You can also add any graphic objects to a spin box. These additional objects are considered as decorations and thus have no specific behavior.

A Spin Box

See Also: IlvArrowButton, IlvNumberField, IlvTextField.

Constructor & Destructor Documentation

IlvSpinBox::IlvSpinBox	(	IlvDisplay *	display,
		const IlvRect &	rect,
		IlvOrientation	arrowOrientation = `IlvVertical`,
		IlUShort	thickness = `IlvDefaultGadgetThickness`,
		IlvPalette *	palette = `0`
	)

Constructor.

Initializes a new instance of the IlvSpinBox class. The spin box created by this constructor has no fields. You can use one of the addField methods to add one or more fields to the spin box.

Parameters

display	The connection to the display.
rect	The size and position of the spin box.
arrowOrientation	The orientation of the spin box arrows. Valid values are: `IlvVertical` or `IlvHorizontal`.
thickness	The thickness of the spin box.
palette	The palette of the spin box.

See Also: addField

IlvSpinBox::IlvSpinBox	(	IlvDisplay *	display,
		const IlvPoint &	point,
		IlvOrientation	arrowOrientation = `IlvVertical`,
		IlUShort	thickness = `IlvDefaultGadgetThickness`,
		IlvPalette *	palette = `0`
	)

Constructor.

Initializes a new instance of the IlvSpinBox class. The spin box created by this constructor has no fields. You can use one of the addField methods to add one or more fields to the spin box.

Parameters

display	The connection to the display.
point	The position of the spin box.
arrowOrientation	The orientation of the spin box arrows. Valid values are: `IlvVertical` or `IlvHorizontal`.
thickness	The thickness of the spin box.
palette	The palette of the spin box.

See Also: addField

Member Function Documentation

void IlvSpinBox::addField	(	IlvTextField *	field,
		const char **	values,
		IlUShort	count,
		IlUShort	pos,
		IlBoolean	loop,
		IlUShort	at = `0`,
		IlBoolean	redraw = `IlFalse`
	)

Adds a text field to the spin box.

Parameters

field	The text field to be added.
values	An array of the strings appearing in the text field.
count	The number of elements in the values array.
pos	The index in the values array of the first string.
loop	A Boolean value specifying whether the text field returns to the first value when the last value is incremented, or to the last value when the first value is decremented.
at	The position in the spin box where the new text field will be inserted.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: removeObject

void IlvSpinBox::addField	(	IlvNumberField *	field,
		IlDouble	value,
		IlDouble	increment,
		IlBoolean	loop,
		IlUShort	at = `0`,
		IlBoolean	redraw = `IlFalse`
	)

Adds a numeric field to the spin box.

When you add a numeric field to a spin box, the buttons allow you to modify the displayed value within the value range specified by the numeric field (see the class IlvNumberField).

Parameters

field	The numeric field to be added.
value	The initial value of the field.
increment	The increment value that is added to or removed from the numeric field when clicking the arrow buttons.
loop	A Boolean value specifying whether the numeric field returns to the first value when the last value is incremented, or to the last value when the first value is decremented.
at	The position in the spin box where the number field will be inserted.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: removeObject

void IlvSpinBox::addLabel	(	IlvTextField *	field,
		const char *	label
	)

Adds a new string to the predefined strings associated with the specified text field.

The new string specified by label is added at the end of the predefined string array.

Parameters

field	The text field of the spin box.
label	The string to be added.

See Also: removeLabel, getLabel

void IlvSpinBox::addObject	(	IlvGraphic *	object,
		IlUShort	at = `0`,
		IlBoolean	redraw = `IlFalse`
	)

Adds the specified object to the spin box as a decoration.

Objects added to a spin box with this method are used as decorations and thus are not active. The size of these objects is not modified by the spin box.

Parameters

object	The graphic object to be added.
at	The position where the object will be inserted in the spin box.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: removeObject

virtual void IlvSpinBox::computeArrowRects	(	IlvRect &	decrArrow,
		IlvRect &	incrArrow,
		IlvRect &	internal,
		const IlvTransformer *	t
	)		const

virtual

Is called to compute the bounding boxes of spin box items.

Parameters

decrArrow	The returned bounding box of the decrement arrow.
incrArrow	The returned bounding box of the increment arrow.
internal	The internal bounding box where to draw the objects of the spin box.
t	The transformer.

static IlSymbol* IlvSpinBox::DecrementCallbackType ( )

static

Returns the callback type of the Decrement callback.

The Decrement callback is invoked when the user clicks on the decrement button. The active field, if any, is decremented just before invoking the callback.

Returns: The callback type for the Decrement callback.

See Also: IncrementCallbackType, IlvGraphic::setCallback

IlvTextField* IlvSpinBox::getActiveField ( ) const

Returns the field (numeric field or text field) that is currently active.

The active field is the field that has the keyboard focus in the spin box. You can change the active field by clicking on another field of the spin box.

Returns: The field (numeric or text) that is currently active.

IlvOrientation IlvSpinBox::getArrowLayout ( ) const

Returns the position of the spin box arrows.

Returns: The position of the spin box arrows, which can be IlvRight (arrows are located on the right side of the spin box), IlvLeft (arrows are located on the left side), and IlvCenter (arrows are located on both sides of the spin box).

See Also: setArrowLayout

IlvOrientation IlvSpinBox::getArrowOrientation ( ) const

Returns the orientation of the spin box arrows.

Returns: The orientation of the spin box arrows, which can be IlvHorizontal or IlvVertical.

See Also: setArrowOrientation

IlvArrowButton* IlvSpinBox::getDecrementButton ( ) const

Returns a pointer to the decrement button.

Returns: A pointer to the decrement button.

See Also: getIncrementButton

IlDouble IlvSpinBox::getIncrement ( IlvNumberField * field ) const

Returns the increment value set for the specified numeric field.

Parameters

field The numeric field of the spin box.

Returns: The increment value set for field. This value is added to or removed from the field value when the arrows buttons are clicked.

See Also: setIncrement

IlvArrowButton* IlvSpinBox::getIncrementButton ( ) const

Returns a pointer to the increment button.

Returns: A pointer to the increment button.

See Also: getDecrementButton

const char* IlvSpinBox::getLabel ( IlvTextField * field ) const

Returns the label displayed by the specified text field.

Parameters

field The text field of the spin box.

Returns: The label displayed by /a field. This is equivalent to calling IlvTextField::getLabel for the text field.

See Also: setLabel

const char** IlvSpinBox::getLabels ( IlvTextField * field ) const

Returns an array containing the predefined strings associated with the specified text field.

Parameters

field The text field of the spin box.

Returns: An array containing the predefined strings defined for field.

See Also: getLabel, setLabel

IlUShort IlvSpinBox::getLabelsCount ( IlvTextField * field ) const

Returns the number of predefined strings associated with the specified text field.

Parameters

field The text field of the spin box.

Returns: The number of predefined strings associated with field.

See Also: setLabel

IlvGraphic* IlvSpinBox::getObject ( IlUShort index ) const

Returns the graphic object specified by index.

Parameters

index The index of the graphic object to be retrieved.

Returns: The graphic object, whether a field or a decoration, specified by index.

See Also: objectCount, getObjectPosition

IlUShort IlvSpinBox::getObjectPosition ( IlvGraphic * object ) const

Returns the index of the specified graphic object.

Parameters

object The graphic object.

Returns: The position of object, whether a field or a decoration, within the spin box.

See Also: getObject

IlUInt IlvSpinBox::getPeriod ( ) const

Returns the period of time that elapses before a value is incremented or decremented when the user clicks on a spin box arrow.

The default value is 200.

Returns: The period of time that elapses before a value is incremented or decremented when the user clicks on a spin box arrow.

See Also: setPeriod

IlUShort IlvSpinBox::getPosition	(	IlvTextField *	field,
		IlBoolean &	error
	)		const

Returns the index of the label of the specified text field in the predefined strings array.

Parameters

field	The text field of the spin box.
error	A Boolean value specifying whether an error occurred. If the field can be edited, the label might not correspond to any of the strings in the array. In this case, the returned value is the last correct index edited in this field and the parameter error is set to `IlTrue`.

Returns: The index of the label of field in the predefined string array.

See Also: getLabel

IlDouble IlvSpinBox::getValue	(	IlvNumberField *	field,
		IlBoolean &	error
	)		const

Returns the value of the specified numeric field.

Parameters

field	The numeric field of the spin box.
error	A Boolean value specifying whether an error occurs when the number field value is converted to a double value. If field can be edited, the numeric field value might be incorrect, that is, it might be out of the bounds defined in `IlvNumberField`. In this case, the parameter error is set to `IlTrue`.

Returns: The value of field. If field can be edited, the returned value is the last correct edited value.

See Also: setValue(IlvNumberField*, IlDouble, IlBoolean)

static IlSymbol* IlvSpinBox::IncrementCallbackType ( )

static

Returns the callback type of the Increment callback.

The Increment callback is invoked when the user clicks on the increment button. The active field, if any, is incremented just before invoking the callback.

Returns: The callback type for the Increment callback.

See Also: DecrementCallbackType, IlvGraphic::setCallback

IlBoolean IlvSpinBox::isDecrementSensitive ( ) const

Indicates whether the increment button is sensitive.

Returns: IlTrue if the increment button is sensitive and IlFalse> otherwise.

See Also: setDecrementSensitive, isIncrementSensitive

IlBoolean IlvSpinBox::isField ( IlvGraphic * object ) const

Checks whether the specified object is a field of the spin box.

Parameters

object The graphic object to be checked.

Returns: IlTrue if object is a field of the spin box (that is, if this object was added using one of the addField methods of the class).

See Also: addField

IlBoolean IlvSpinBox::isIncrementSensitive ( ) const

Indicates whether the increment button is sensitive.

Returns: IlTrue if the increment button is sensitive and IlFalse> otherwise.

See Also: setIncrementSensitive, isDecrementSensitive

IlBoolean IlvSpinBox::isLoop ( IlvTextField * field ) const

Indicates whether the specified field is in the loop mode.

Parameters

field The spin box field.

Returns: IlTrue if field returns to the first value when the last value is incremented, or to the last value when the first value is decremented.

See Also: setLoop

IlUShort IlvSpinBox::objectCount ( ) const

Returns the number of graphic objects (fields and decorations) that the spin box contains.

Returns: The number of graphic objects (fields and decorations) contained in this spin box.

See Also: addField, addObject

void IlvSpinBox::removeLabel	(	IlvTextField *	field,
		IlShort	index
	)

Removes the predefined string located at the specified index from the specified text field.

Parameters

field	The text field of the spin box.
index	The index of the string to be removed.

See Also: addLabel, setLabel

void IlvSpinBox::removeObject	(	IlvGraphic *	object,
		IlBoolean	redraw = `IlFalse`
	)

Removes the specified object from the spin box.

The object parameter can be a spin box field (added by addField) or a decoration object (added by addObject).

Parameters

object	The graphic object to be removed.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: addObject, addField

void IlvSpinBox::setArrowLayout	(	IlvOrientation	orientation,
		IlBoolean	redraw = `IlFalse`
	)

Sets the position of the spin box arrows.

Changing the layout does not have any effect if the spin box contains no object.

Parameters

orientation	The new position of the spin box arrows. Valid values are: `IlvRight` (arrows are located on the right side of the spin box), `IlvLeft` (arrows are located on the left side), and `IlvCenter` (arrows are located on both sides of the spin box).
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: getArrowLayout

void IlvSpinBox::setArrowOrientation	(	IlvOrientation	orientation,
		IlBoolean	redraw = `IlFalse`
	)

Sets the orientation of the spin box arrows.

Parameters

orientation	The new orientation of the spin box arrows. Valid values are: `IlvHorizontal` or `IlvVertical`.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: getArrowOrientation

void IlvSpinBox::setDecrementSensitive	(	IlBoolean	value,
		IlBoolean	redraw = `IlFalse`
	)

Specifies whether the decrement button should be sensitive.

When the decrement button is set to nonsensitive, you can no longer decrement the field value. If a field is not in loop mode (see IlvSpinBox::setLoop) and cannot be edited, the arrow buttons become insensitive automatically when the first value allowed for the field has been reached.

Parameters

value	A Boolean value specifying whether the decrement button should be sensitive (`IlTrue`).
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: isDecrementSensitive, IlvGraphic::setSensitive, setIncrementSensitive

void IlvSpinBox::setIncrement	(	IlvNumberField *	field,
		IlDouble	value
	)

Sets the increment value of the specified numeric field.

Parameters

field	The numeric field of the spin box.
value	The new increment value of field. This value is added to or removed from the field value when the arrow buttons are clicked.

See Also: getIncrement

void IlvSpinBox::setIncrementSensitive	(	IlBoolean	value,
		IlBoolean	redraw = `IlFalse`
	)

Specifies whether the increment button should be sensitive.

When the increment button is set to nonsensitive, you can no longer increment the field value. If a field is not in loop mode (see IlvSpinBox::setLoop) and cannot be edited, the arrow buttons become insensitive automatically when the last value allowed for the field has been reached.

Parameters

value	A Boolean value specifying whether the increment button should be sensitive (`IlTrue`).
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: isIncrementSensitive, IlvGraphic::setSensitive, setDecrementSensitive

void IlvSpinBox::setLabel	(	IlvTextField *	field,
		const char *	label,
		IlBoolean	redraw = `IlFalse`
	)

Sets the label of the specified text field.

Parameters

field	The text field of the spin box.
label	The new label to which field is set.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: getLabel

void IlvSpinBox::setLabel	(	IlvTextField *	field,
		IlUShort	index,
		IlBoolean	redraw = `IlFalse`
	)

Sets the label of the specified text field to one of its predefined strings.

Parameters

field	The text field of the spin box.
index	The index of the predefined string.
redraw	A Boolean value specifying whether the spin box should be redrawn.

See Also: getLabel

void IlvSpinBox::setLoop	(	IlvTextField *	field,
		IlBoolean	loop
	)

Specifies whether the specified field should operate in the loop mode.

Parameters

field	The spin box field.
loop	A Boolean value specifying whether field should operate in the loop mode. If loop is set to `IlTrue`, field returns to the first value when the last value is decremented or to the last value when the first value is decremented.

See Also: isLoop

void IlvSpinBox::setPeriod ( IlUInt period )

Sets the period of time that elapses before a value is incremented or decremented when the user clicks on a spin box arrow.

Parameters

period The new period expressed in milliseconds.

See Also: getPeriod

IlBoolean IlvSpinBox::setValue	(	IlvNumberField *	field,
		IlDouble	value,
		IlBoolean	redraw = `IlFalse`
	)

Sets the value of the specified numeric field.

Parameters

field	The numeric field of the spin box.
value	The new double value to which field is set.
redraw	A Boolean value specifying whether the spin box should be redrawn.

Returns: A Boolean value specifying whether an error occurs when setting field to value.

See Also: getValue(IlvNumberField*, IlBoolean&)

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Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

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Gadgets Package API Reference Guide