Gadget Item class. More...

#include <ilviews/gadgets/itemgdt.h>

Inheritance diagram for IlvGadgetItem:

Public Member Functions
	IlvGadgetItem (const char label, IlvBitmap bitmap=0, IlvPosition position=IlvRight, IlUShort spacing=4, IlBoolean copy=IlTrue)
	Constructor. More...

	IlvGadgetItem (const char label, IlvGraphic graphic, IlvPosition position=IlvRight, IlUShort spacing=4, IlBoolean copy=IlTrue)
	Constructor. More...

	IlvGadgetItem (IlvGraphic *graphic)
	Constructor. More...

	IlvGadgetItem (IlvBitmap *bitmap)
	Constructor. More...

virtual void	activate ()
	Activates the item. More...

virtual IlvGadgetItem *	copy () const
	Copies this object. More...

virtual void	deSelect ()
	Deselects the item. More...

virtual void	draw (IlvPort dst, const IlvRect &rect, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Is called to draw the item. More...

virtual void	drawLabel (IlvPort dst, IlvPalette palette, const IlvRect &rect, const IlvTransformer t=0, const IlvRegion clip=0) const
	Is called to draw the item label. More...

virtual void	drawPicture (IlvPort dst, const IlvRect &rect, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Is called to draw the item picture. More...

virtual void	edit ()
	Edits the item label. More...

IlvBitmap *	getBitmap (IlUShort index=(IlUShort) 0) const
	Returns the bitmap whose index is specified. More...

IlvBitmap *	getBitmap (const IlSymbol *symbol) const
	Returns the bitmap corresponding to the specified symbol. More...

IlUShort	getBitmapCount () const
	Returns the number of bitmaps used by this item. More...

virtual IlUInt	getBitmapMask () const
	Returns the bitmap mask of the item. More...

IlAny	getClientData () const
	Returns the client data of the item. More...

virtual IlvBitmap *	getCurrentBitmap () const
	Returns the bitmap that is currently displayed by the item. More...

IlvGraphic *	getGraphic () const
	Returns the `IlvGraphic` object associated with this item. More...

virtual IlUShort	getHeight () const
	Returns the item height. More...

virtual IlvPalette *	getHighlightTextPalette () const
	Returns the palette used to draw the label of highlighted items. More...

IlvGadgetItemHolder *	getHolder () const
	Returns the item holder. More...

virtual IlvPalette *	getInsensitivePalette () const
	Returns the palette used to draw a nonsensitive item. More...

const char *	getLabel () const
	Returns the item label. More...

IlvAlignment	getLabelAlignment () const
	Returns the label alignment. More...

void	getLabelOrientation (IlvOrientation &orientation, IlBoolean &flip) const
	Returns the orientation of the item label. More...

IlvPosition	getLabelPosition () const
	Returns the position of the label relative to the picture. More...

virtual const char *	getMessage () const
	Returns the message of the item. More...

char	getMnemonic () const
	Returns the mnemonic letter associated with the item. More...

const char *	getName () const
	Returns the item name. More...

IlvNamedProperty *	getNamedProperty (const IlSymbol *name) const
	Returns the property whose name is specified. More...

virtual IlvPalette *	getNormalTextPalette () const
	Returns the default palette used to draw an item. More...

virtual IlvPalette *	getOpaquePalette () const
	Returns the palette that is used to draw opaque items. More...

IlAny	getProperty (const IlSymbol *key) const
	Returns the object property whose symbol is provided as the parameter. More...

virtual IlvPalette *	getSelectionPalette () const
	Returns the palette used to draw selected items. More...

virtual IlvPalette *	getSelectionTextPalette () const
	Returns the palette used to draw the label of selected items. More...

IlUShort	getSpacing () const
	Returns the spacing between the label and the picture of the item. More...

virtual IlUShort	getWidth () const
	Returns the item width. More...

IlBoolean	hasProperty (const IlSymbol *key) const
	Indicates whether the item has the property whose symbol is specified. More...

virtual void	highlight (IlBoolean value=IlTrue)
	Highlights the item. More...

IlBoolean	isDragDropTarget () const
	Returns a Boolean value specifying whether the item is the target of a drag-and-drop operation. More...

IlBoolean	isEditable () const
	Indicates whether the item can be edited. More...

IlBoolean	isHighlighted () const
	Indicates whether the item is highlighted. More...

IlBoolean	isOpaque () const
	Indicates whether the item is opaque. More...

virtual IlBoolean	isSelectable () const
	Indicates whether the item can be selected. More...

IlBoolean	isSelected () const
	Indicates whether the item is selected. More...

IlBoolean	isSensitive () const
	Indicates whether the item is sensitive. More...

IlBoolean	isShowingLabel () const
	Indicates whether the item label is visible. More...

IlBoolean	isShowingPicture () const
	Indicates whether the item picture is visible. More...

virtual void	itemRect (IlvRect &rect, const IlvRect &bbox) const
	Returns the item bounding bbox. More...

virtual void	labelRect (IlvRect &rect, const IlvRect &bbox) const
	Returns the bounding box of the item label. More...

virtual void	pictureRect (IlvRect &rect, const IlvRect &bbox) const
	Returns the bounding bbox of the item picture. More...

virtual void	recomputeSize (IlBoolean redraw=IlTrue)
	Recomputes the item geometry. More...

void	removeAllBitmaps ()
	Removes all the bitmaps associated with the item. More...

IlvNamedProperty *	removeNamedProperty (IlSymbol *name)
	Removes the specified named property from the object. More...

IlBoolean	removeProperty (const IlSymbol *key)
	Removes a property from the object. More...

virtual void	select ()
	Selects the item. More...

virtual void	selectionRect (IlvRect &rect, const IlvRect &bbox) const
	Returns the bounding box of the item selection. More...

void	setBitmap (IlUShort index, IlvBitmap *bitmap)
	Sets the specified bitmap to the item at the specified index. More...

void	setBitmap (const IlSymbol symbol, IlvBitmap bitmap)
	Sets the specified bitmap to the item using the specified symbol. More...

void	setBitmap (IlvBitmap *bitmap)
	Sets the sensitive bitmap of the item. More...

void	setClientData (IlAny data)
	Sets the new client data for this item. More...

void	setEditable (IlBoolean value)
	Specifies whether the item should be editable. More...

void	setGraphic (IlvGraphic *graphic)
	Specifies the graphic object associated with this item. More...

virtual void	setHighlightTextPalette (IlvPalette *palette)
	Sets the palette used to draw the label of highlighted items. More...

void	setLabel (const char *label, IlBoolean copy=IlTrue)
	Sets the item label. More...

void	setLabelAlignment (IlvAlignment alignment)
	Sets the label alignment. More...

void	setLabelOrientation (IlvOrientation orientation, IlBoolean flip=IlFalse)
	Sets the orientation of the item label. More...

void	setLabelPosition (IlvPosition position)
	Sets the label position relative to the picture. More...

void	setName (const char *name)
	Sets the item name. More...

IlvNamedProperty *	setNamedProperty (IlvNamedProperty *property)
	Sets the specified named property to the object. More...

virtual void	setNormalTextPalette (IlvPalette *palette)
	Sets the default palette used to draw an item. More...

void	setOpaque (IlBoolean value)
	Specifies whether the item should be opaque. More...

virtual void	setOpaquePalette (IlvPalette *palette)
	Sets the palette used to draw opaque items. More...

void	setProperty (const IlSymbol *key, IlAny value)
	Sets the property whose symbol is specified to the item. More...

virtual void	setSelectionTextPalette (IlvPalette *palette)
	Sets the palette used to draw the label of selected items. More...

void	setSensitive (IlBoolean value)
	Specifies whether the item should be sensitive or not. More...

void	setSpacing (IlUShort spacing)
	Sets the spacing between the label and the picture of the item. More...

void	showLabel (IlBoolean value=IlTrue)
	Specifies whether the item label should be shown. More...

void	showPicture (IlBoolean value=IlTrue)
	Specifies whether the item picture should be shown. More...

virtual void	write (IlvOutputFile &file) const
	Writes an object description to a file. More...

Static Public Member Functions
static void	AddItemBitmapSymbol (const IlSymbol *symbol, IlUShort index)
	Links a new bitmap symbol with the specified index. More...

static IlSymbol *	BitmapSymbol ()
	Returns the symbol associated with the sensitive bitmap. More...

static IlShort	GetItemBitmapIndex (const IlSymbol *symbol)
	Returns the index corresponding to the specified symbol. More...

static IlSymbol *	GetItemBitmapSymbol (IlUShort index)
	Returns the symbol corresponding to the specified index. More...

static IlSymbol *	HighlightedBitmapSymbol ()
	Returns the symbol associated with the highlighted bitmap. More...

static IlSymbol *	InsensitiveBitmapSymbol ()
	Returns the symbol associated with the nonsensitive bitmap. More...

static IlvGadgetItem *	readItem (IlvInputFile &file, IlvDisplay *display)
	Reads an object description from a file. More...

static IlSymbol *	SelectedBitmapSymbol ()
	Returns the symbol associated with the selected bitmap. More...

Protected Member Functions
virtual void	computeRects (IlvRect &labelRect, IlvRect &pictureRect) const
	Computes the label and picture bounding boxes. More...

virtual void	computeSize (IlUShort &width, IlUShort &height) const
	Computes the item size. More...

Friends
class	IlvGadgetItemHolder

Detailed Description

Gadget Item class.

Library: ilvgadgt

IlvGadgetItem is the base class for items used in gadget classes such as IlvAbstractMenu, IlvStringList, IlvTreeGadget, and IlvMatrix. IlvGadgetItem objects can display a text and a picture. The picture can be an IlvGraphic object or a bitmap. If it is a bitmap, you can specify several bitmaps, each corresponding to different item states, such as selected or highlighted.

See Also: IlvGadgetItemHolder, IlvGadgetItemMatrixItem, IlvMenuItem, IlvTreeGadgetItem, IlvBitmap, IlvGraphic

Constructor & Destructor Documentation

IlvGadgetItem::IlvGadgetItem	(	const char *	label,
		IlvBitmap *	bitmap = `0`,
		IlvPosition	position = `IlvRight`,
		IlUShort	spacing = `4`,
		IlBoolean	copy = `IlTrue`
	)

Constructor.

Initializes a new instance of the IlvGadgetItem class. This constructor allows you to specify both a label and a bitmap, as well as their relative alignment and spacing. The bitmap is locked.

Parameters

label	The item label.
bitmap	The sensitive bitmap of the item.
position	The label position relative to the picture.
spacing	The spacing between the label and the picture.
copy	A Boolean value specifying 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 IlvGadgetItem.`

IlvGadgetItem::IlvGadgetItem	(	const char *	label,
		IlvGraphic *	graphic,
		IlvPosition	position = `IlvRight`,
		IlUShort	spacing = `4`,
		IlBoolean	copy = `IlTrue`
	)

Constructor.

Initializes a new instance of the IlvGadgetItem class. This constructor allows you to specify both a label and a graphic, as well as their relative alignment and spacing.

Parameters

label	The item label.
graphic	The item picture.
position	The label position relative to the picture.
spacing	The spacing between the label and the picture.
copy	A Boolean value specifying 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 IlvGadgetItem.`

IlvGadgetItem::IlvGadgetItem ( IlvGraphic * graphic )

Constructor.

Initializes a new instance of the IlvGadgetItem class. This constructor allows you to create an item represented by a graphic object.

Parameters

graphic The item picture.

IlvGadgetItem::IlvGadgetItem ( IlvBitmap * bitmap )

Constructor.

Initializes a new instance of the IlvGadgetItem class. This constructor allows you to create an item represented by a bitmap. The bitmap is locked.

Parameters

bitmap The sensitive bitmap of the item.

Member Function Documentation

virtual void IlvGadgetItem::activate ( )

virtual

Activates the item.

The default implementation calls the holder method IlvGadgetItemHolder::itemActivated.

See Also: IlvGadgetItemHolder::itemActivated

static void IlvGadgetItem::AddItemBitmapSymbol	(	const IlSymbol *	symbol,
		IlUShort	index
	)

static

Links a new bitmap symbol with the specified index.

See Also: GetItemBitmapSymbol, GetItemBitmapIndex, setBitmap

static IlSymbol* IlvGadgetItem::BitmapSymbol ( )

static

Returns the symbol associated with the sensitive bitmap.

Returns: The symbol associated with the sensitive bitmap.

See Also: GetItemBitmapIndex, AddItemBitmapSymbol, setBitmap

virtual void IlvGadgetItem::computeRects	(	IlvRect &	labelRect,
		IlvRect &	pictureRect
	)		const

protectedvirtual

Computes the label and picture bounding boxes.

If you want to change the label or picture location, you can override this member function in a subclass.

Parameters

labelRect	The returned bounding box of the item label.
pictureRect	The returned bounding box of the item picture.

See Also: computeSize, recomputeSize, labelRect, pictureRect

virtual void IlvGadgetItem::computeSize	(	IlUShort &	width,
		IlUShort &	height
	)		const

protectedvirtual

Computes the item size.

Computes the size of the item using the member function IlvGadgetItem::computeRects, which specifies the location of the label and picture parts. If you want to change the item size, you can override this member function in a subclass.

Parameters

width	The returned item width.
height	The returned item height.

See Also: computeRects, recomputeSize, getWidth, getHeight

Reimplemented in IlvTreeGadgetItem, and IlvMenuItem.

virtual IlvGadgetItem* IlvGadgetItem::copy ( ) const

virtual

Copies this object.

Allocates and returns a copy of this object. The named properties attached to the gadget item are also copied.

Returns: A copy of the object.

See Also: IlvPredefinedGadgetItemIOMembers.

virtual void IlvGadgetItem::deSelect ( )

virtual

Deselects the item.

The default implementation deselects and redraws the item, then it calls the holder method IlvGadgetItemHolder::itemDeSelected.

See Also: isSelected, select, SelectedBitmapSymbol

Reimplemented in IlvTreeGadgetItem, and IlvMenuItem.

virtual void IlvGadgetItem::draw	(	IlvPort *	dst,
		const IlvRect &	rect,
		const IlvTransformer *	t = `0`,
		const IlvRegion *	clip = `0`
	)		const

virtual

Is called to draw the item.

You can override this method to modify the way the item is drawn.

Parameters

dst	The destination drawing port.
rect	The rectangle where to the item will be drawn.
t	The transformer used to draw the item.
clip	The clipping area.

See Also: drawLabel, drawPicture, itemRect, IlvGadgetItemHolder::drawGadgetItem

virtual void IlvGadgetItem::drawLabel	(	IlvPort *	dst,
		IlvPalette *	palette,
		const IlvRect &	rect,
		const IlvTransformer *	t = `0`,
		const IlvRegion *	clip = `0`
	)		const

virtual

Is called to draw the item label.

You can override this method to modify the way the item is drawn.

Parameters

dst	The destination drawing port.
palette	The palette used to draw the item label.
rect	The rectangle where to the item label will be drawn.
t	The transformer used to draw the item label.
clip	The clipping area.

See Also: draw, drawPicture, itemRect

Reimplemented in IlvMenuItem.

virtual void IlvGadgetItem::drawPicture	(	IlvPort *	dst,
		const IlvRect &	rect,
		const IlvTransformer *	t = `0`,
		const IlvRegion *	clip = `0`
	)		const

virtual

Is called to draw the item picture.

You can override this method to modify the way the item is drawn.

Parameters

dst	The destination drawing port.
rect	The rectangle where to draw the item picture.
t	The transformer used to draw the item picture.
clip	The clipping area.

See Also: draw, drawPicture, itemRect

virtual void IlvGadgetItem::edit ( )

virtual

Edits the item label.

Edits the item if editing is allowed.

See Also: isEditable

IlvBitmap* IlvGadgetItem::getBitmap ( IlUShort index = (IlUShort) 0 ) const

Returns the bitmap whose index is specified.

Parameters

index The index of the bitmap.

Returns: The bitmap whose index is specified or 0 if there is no bitmap at this index.

See Also: setBitmap

IlvBitmap* IlvGadgetItem::getBitmap ( const IlSymbol * symbol ) const

Returns the bitmap corresponding to the specified symbol.

Returns: The bitmap corresponding to the specified symbol or 0 if there is no bitmap that matches this symbol.

See Also: setBitmap, BitmapSymbol, SelectedBitmapSymbol, InsensitiveBitmapSymbol, HighlightedBitmapSymbol

IlUShort IlvGadgetItem::getBitmapCount ( ) const

Returns the number of bitmaps used by this item.

Returns: The number of bitmaps used by this item.

See Also: setBitmap

virtual IlUInt IlvGadgetItem::getBitmapMask ( ) const

virtual

Returns the bitmap mask of the item.

The bitmap mask lets you know which bitmap indexes the item is handling. If the i^th bit of the return value is set, it means that the item uses the bitmap of index i. You can get the associated symbol using the static member function GetItemBitmapSymbol.

Returns: The bitmap mask of the item.

See Also: GetItemBitmapSymbol, getBitmap(IlUShort)

Reimplemented in IlvTreeGadgetItem, and IlvMenuItem.

IlAny IlvGadgetItem::getClientData ( ) const

Returns the client data of the item.

Client data is not typed where and can store any type of data.

Returns: The client data of the item. If no client data has been set, the member function returns 0.

See Also: setClientData

virtual IlvBitmap* IlvGadgetItem::getCurrentBitmap ( ) const

virtual

Returns the bitmap that is currently displayed by the item.

Returns: The bitmap that is currently displayed, depending on the item state. If you want to display a specific bitmap, you can override this member function is a subclass.

See Also: getBitmap

Reimplemented in IlvTreeGadgetItem, and IlvMenuItem.

IlvGraphic* IlvGadgetItem::getGraphic ( ) const

Returns the IlvGraphic object associated with this item.

Returns: The IlvGraphic object associated with this item. You must not delete the returned IlvGraphic object.

See Also: setGraphic

virtual IlUShort IlvGadgetItem::getHeight ( ) const

virtual

Returns the item height.

Returns: The item height.

See Also: getWidth, itemRect

virtual IlvPalette* IlvGadgetItem::getHighlightTextPalette ( ) const

virtual

Returns the palette used to draw the label of highlighted items.

By default, an item uses the palette of its holder. Therefore, this method simply calls IlvGadgetItemHolder::getHighlightTextPalette.

Returns: The palette used to draw the label of highlighted items.

See Also: setHighlightTextPalette, IlvGadgetItemHolder::getHighlightTextPalette

IlvGadgetItemHolder* IlvGadgetItem::getHolder ( ) const

Returns the item holder.

Returns: The item holder or 0 if the item has no holder.

virtual IlvPalette* IlvGadgetItem::getInsensitivePalette ( ) const

virtual

Returns the palette used to draw a nonsensitive item.

By default, an item uses the palette of its holder. Therefore, this method simply calls IlvGadgetItemHolder::getInsensitivePalette.

Returns: The palette used to draw a nonsensitive item.

See Also: IlvGadgetItemHolder::getInsensitivePalette

Reimplemented in IlvMenuItem.

static IlShort IlvGadgetItem::GetItemBitmapIndex ( const IlSymbol * symbol )

static

Returns the index corresponding to the specified symbol.

Returns: The index corresponding to symbol or -1 if the symbol does not match an existing index.

See Also: GetItemBitmapSymbol, AddItemBitmapSymbol, setBitmap

static IlSymbol* IlvGadgetItem::GetItemBitmapSymbol ( IlUShort index )

static

Returns the symbol corresponding to the specified index.

Returns: The symbol corresponding to index or 0 if there is no such symbol.

See Also: GetItemBitmapIndex, AddItemBitmapSymbol, setBitmap

const char* IlvGadgetItem::getLabel ( ) const

Returns the item label.

Returns: The item label or 0 if there is no label.

IlvAlignment IlvGadgetItem::getLabelAlignment ( ) const

Returns the label alignment.

This method applies only when the label is made up of several lines.

Returns: The label alignment.

See Also: setAlignment, setLabel

void IlvGadgetItem::getLabelOrientation	(	IlvOrientation &	orientation,
		IlBoolean &	flip
	)		const

Returns the orientation of the item label.

Sets orientation and flip to the orientation of the item label.

Parameters

orientation	The label orientation.
flip	A Boolean value specifying whether the label is drawn from top to bottom or from bottom to top.

See Also: setLabelOrientation

IlvPosition IlvGadgetItem::getLabelPosition ( ) const

Returns the position of the label relative to the picture.

Returns: The position of the label relative to the picture.

See Also: setLabelPosition

virtual const char* IlvGadgetItem::getMessage ( ) const

virtual

Returns the message of the item.

Returns: The message string with which the item label is associated in the display database. If the item label has no associated message string, the method returns the item label.

See Also: getLabel

Reimplemented in IlvMenuItem.

char IlvGadgetItem::getMnemonic ( ) const

Returns the mnemonic letter associated with the item.

To set a mnemonic letter, you must type the ^ (caret) character before the letter used as the mnemonic in the item label or message.

Returns: The mnemonic letter associated with the item or 0 if there is no mnemonic.

See Also: setLabel

const char* IlvGadgetItem::getName ( ) const

Returns the item name.

Returns: The item name. You must not delete or modify the returned string.

See Also: setName, IlvGadgetItemHolder::getItemByName

IlvNamedProperty* IlvGadgetItem::getNamedProperty ( const IlSymbol * name ) const

Returns the property whose name is specified.

Parameters

name	The property name.

Returns: A pointer to the specified named property. Returns 0 if no named property matches the specified name.

See Also: setNamedProperty, removeNamedProperty

virtual IlvPalette* IlvGadgetItem::getNormalTextPalette ( ) const

virtual

Returns the default palette used to draw an item.

By default, an item uses the palette of its holder. Therefore, this method simply calls IlvGadgetItemHolder::getNormalTextPalette.

Returns: The default palette used to draw an item.

See Also: setNormalTextPalette, IlvGadgetItemHolder::getNormalTextPalette

virtual IlvPalette* IlvGadgetItem::getOpaquePalette ( ) const

virtual

Returns the palette that is used to draw opaque items.

By default, an item uses the palette of its holder. Therefore, this method simply calls IlvGadgetItemHolder::getOpaquePalette.

Returns: The palette used to draw opaque items.

See Also: setOpaquePalette, IlvGadgetItemHolder::getOpaquePalette

IlAny IlvGadgetItem::getProperty ( const IlSymbol * key ) const

Returns the object property whose symbol is provided as the parameter.

Parameters

key	The symbol representing the property.

Returns: The specified property value when it can be found. It Returns 0 when no property name matches the key parameter.

See Also: setProperty, removeProperty, hasProperty

virtual IlvPalette* IlvGadgetItem::getSelectionPalette ( ) const

virtual

Returns the palette used to draw selected items.

By default, an item uses the palette of its holder. Therefore, this method simply calls IlvGadgetItemHolder::getSelectionPalette .

Returns: The palette used to draw selected items.

See Also: IlvGadgetItemHolder::getSelectionPalette

virtual IlvPalette* IlvGadgetItem::getSelectionTextPalette ( ) const

virtual

Returns the palette used to draw the label of selected items.

By default, an item uses the palette of its holder. Therefore, this method simply calls IlvGadgetItemHolder::getSelectionTextPalette.

Returns: The palette used to draw the label of selected items.

See Also: setSelectionTextPalette, IlvGadgetItemHolder::getSelectionTextPalette

IlUShort IlvGadgetItem::getSpacing ( ) const

Returns the spacing between the label and the picture of the item.

Returns: The spacing between the label and the picture of the item.

See Also: setSpacing

virtual IlUShort IlvGadgetItem::getWidth ( ) const

virtual

Returns the item width.

Returns: The item width.

See Also: getHeight, itemRect

IlBoolean IlvGadgetItem::hasProperty ( const IlSymbol * key ) const

Indicates whether the item has the property whose symbol is specified.

Parameters

key	The symbol representing the property.

Returns: IlTrue if the property specified by key was found, and IlFalse otherwise.

See Also: setProperty, removeProperty, getProperty

virtual void IlvGadgetItem::highlight ( IlBoolean value = IlTrue )

virtual

Highlights the item.

Highlights the item if value is IlTrue, otherwise the item is not highlighted. Uses the highlight bitmap if one is provided.

Parameters

value A Boolean value specifying whether the item should be highlighted.

See Also: isHighlighted

static IlSymbol* IlvGadgetItem::HighlightedBitmapSymbol ( )

static

Returns the symbol associated with the highlighted bitmap.

Returns: The symbol associated with the highlighted bitmap.

See Also: GetItemBitmapIndex, AddItemBitmapSymbol, setBitmap, highlight

static IlSymbol* IlvGadgetItem::InsensitiveBitmapSymbol ( )

static

Returns the symbol associated with the nonsensitive bitmap.

Returns: The symbol associated with the nonsensitive bitmap.

See Also: GetItemBitmapIndex, AddItemBitmapSymbol, setBitmap, setSensitive

IlBoolean IlvGadgetItem::isDragDropTarget ( ) const

Returns a Boolean value specifying whether the item is the target of a drag-and-drop operation.

When an item is the target of a drag-and-drop operation, it is drawn as if it was selected.

Returns: IlTrue if the item is considered a drag-and-drop target, and IlFalse otherwise.

See Also: IlvGadgetItemHolder::setDragDropTarget

IlBoolean IlvGadgetItem::isEditable ( ) const

Indicates whether the item can be edited.

Returns: IlTrue if the item can be edited, and IlFalse otherwise.

See Also: setEditable

IlBoolean IlvGadgetItem::isHighlighted ( ) const

Indicates whether the item is highlighted.

Returns: IlTrue if the item is highlighted, and IlFalse otherwise.

See Also: highlight

IlBoolean IlvGadgetItem::isOpaque ( ) const

Indicates whether the item is opaque.

Returns: IlTrue if the item is opaque and, IlFalse otherwise.

See Also: setOpaque, getOpaquePalette

virtual IlBoolean IlvGadgetItem::isSelectable ( ) const

virtual

Indicates whether the item can be selected.

Is called when an item is about to be selected. You can redefine this member function to filter item selection.

Returns: IlTrue if the item can be selected, and IlFalse otherwise.

See Also: select, deSelect, isSelected

Reimplemented in IlvMenuItem.

IlBoolean IlvGadgetItem::isSelected ( ) const

Indicates whether the item is selected.

Returns: IlTrue if the item is selected, and IlFalse otherwise.

See Also: select, deSelect

IlBoolean IlvGadgetItem::isSensitive ( ) const

Indicates whether the item is sensitive.

Returns: IlTrue if the item is sensitive, and IlFalse otherwise.

See Also: setSensitive, getInsensitivePalette

IlBoolean IlvGadgetItem::isShowingLabel ( ) const

Indicates whether the item label is visible.

Returns: IlTrue if the item label is visible, and IlFalse otherwise.

See Also: showLabel, isShowingPicture

IlBoolean IlvGadgetItem::isShowingPicture ( ) const

Indicates whether the item picture is visible.

Returns: IlTrue if the item picture is visible, and IlFalse otherwise.

See Also: showPicture, isShowingLabel

virtual void IlvGadgetItem::itemRect	(	IlvRect &	rect,
		const IlvRect &	bbox
	)		const

virtual

Returns the item bounding bbox.

Sets the item bounding box to rect when the item is drawn in bbox.

Parameters

rect	The returned bounding box.
bbox	The rectangle where the item should be drawn.

See Also: pictureRect, labelRect, selectionRect

virtual void IlvGadgetItem::labelRect	(	IlvRect &	rect,
		const IlvRect &	bbox
	)		const

virtual

Returns the bounding box of the item label.

Sets the bounding box of the item label to rect when the item is drawn in bbox.

Parameters

rect	The returned bounding box.
bbox	The rectangle where the item should be drawn.

See Also: pictureRect, itemRect, selectionRect

virtual void IlvGadgetItem::pictureRect	(	IlvRect &	rect,
		const IlvRect &	bbox
	)		const

virtual

Returns the bounding bbox of the item picture.

Sets the bounding box of the item picture to rect when the item is drawn in bbox.

Parameters

rect	The returned bounding box.
bbox	The rectangle where the item should be drawn.

See Also: labelRect, itemRect, selectionRect

static IlvGadgetItem* IlvGadgetItem::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 :

IlvGadgetItem*
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: DeclareGadgetItemInfoRO, DeclareGadgetItemInfo, IlvPredefinedGadgetItemIOMembers.

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

virtual void IlvGadgetItem::recomputeSize ( IlBoolean redraw = IlTrue )

virtual

Recomputes the item geometry.

Is internally called by each function that modifies the item size. If you change the size of an IlvGraphic object encapsulated by an IlvGadgetItem, you must call this member function. If redraw is IlTrue or is omitted, the item will be redrawn automatically.

Parameters

redraw A Boolean value specifying whether the item should be redrawn.

See Also: computeRects, getWidth, getHeight

void IlvGadgetItem::removeAllBitmaps ( )

Removes all the bitmaps associated with the item.

All the bitmaps are unlocked.

See Also: setGraphic, getBitmap, setBitmap

IlvNamedProperty* IlvGadgetItem::removeNamedProperty ( IlSymbol * name )

Removes the specified named property from the object.

Parameters

name	The property name.

Returns: The named property with the same name that was previously associated with this object. You can delete it or keep it for further handling. If no previous named property with the same name was associated with this object, this member function returns 0.

See Also: getNamedProperty, setNamedProperty

IlBoolean IlvGadgetItem::removeProperty ( const IlSymbol * key )

Removes a property from the object.

Parameters

key	The symbol representing the property.

Returns: IlTrue if the property specified by key was found and IlFalse otherwise.

See Also: setProperty, getProperty, hasProperty

virtual void IlvGadgetItem::select ( )

virtual

Selects the item.

The default implementation selects and redraws the item, then it calls the holder method IlvGadgetItemHolder::itemSelected.

See Also: isSelected, deSelect, SelectedBitmapSymbol

Reimplemented in IlvTreeGadgetItem, and IlvMenuItem.

static IlSymbol* IlvGadgetItem::SelectedBitmapSymbol ( )

static

Returns the symbol associated with the selected bitmap.

Returns: The symbol associated with the selected bitmap.

See Also: GetItemBitmapIndex, AddItemBitmapSymbol, setBitmap, select

virtual void IlvGadgetItem::selectionRect	(	IlvRect &	rect,
		const IlvRect &	bbox
	)		const

virtual

Returns the bounding box of the item selection.

Sets the bounding bbox of the item selection to rect when the item is drawn in bbox.

Parameters

rect	The returned bounding box.
bbox	The rectangle where the item should be drawn.

See Also: pictureRect, itemRect, labelRect

void IlvGadgetItem::setBitmap	(	IlUShort	index,
		IlvBitmap *	bitmap
	)

Sets the specified bitmap to the item at the specified index.

Sets the bitmap whose index is specified to bitmap. If a bitmap already exists for this index, it is unlocked. The new bitmap is locked. Existing indexes are:

Sensitive Bitmap	`BitmapSymbol()`	0
Selected Bitmap	`SelectedBitmapSymbol()`	1
Insensitive Bitmap	`InsensitiveBitmapSymbol()`	2
Highlighted Bitmap	`HighlightedBitmapSymbol()`	3

You can use other indexes to store more bitmaps. In this case, you must override the member function IlvGadgetItem::getCurrentBitmap to return the correct bitmap.

Parameters

index	The index to which the bitmap should be assigned.
bitmap	The new bitmap.

See Also: getBitmap, BitmapSymbol, SelectedBitmapSymbol, InsensitiveBitmapSymbol, HighlightedBitmapSymbol

void IlvGadgetItem::setBitmap	(	const IlSymbol *	symbol,
		IlvBitmap *	bitmap
	)

Sets the specified bitmap to the item using the specified symbol.

Sets the bitmap of the item specified by symbol to bitmap. If a bitmap already exists for this symbol, it is unlocked. The new bitmap is locked.

Parameters

symbol	The symbol specifying the type of bitmap.
bitmap	The new bitmap.

See Also: getBitmap, BitmapSymbol, SelectedBitmapSymbol, InsensitiveBitmapSymbol, HighlightedBitmapSymbol

void IlvGadgetItem::setBitmap ( IlvBitmap * bitmap )

Sets the sensitive bitmap of the item.

Sets the sensitive bitmap to bitmap. If a sensitive bitmap already exists for this item, it is unlocked. The new bitmap is locked.

Parameters

bitmap The new sensitive bitmap.

See Also: getBitmap

void IlvGadgetItem::setClientData ( IlAny data )

Sets the new client data for this item.

Parameters

data	The new client data. Any previous client data is lost.

See Also: getClientData

void IlvGadgetItem::setEditable ( IlBoolean value )

Specifies whether the item should be editable.

Parameters

value A Boolean value specifying specifying whether the item should be editable (IlTrue) or not (IlFalse).

See Also: isEditable

void IlvGadgetItem::setGraphic ( IlvGraphic * graphic )

Specifies the graphic object associated with this item.

Calls the member function IlvGadgetItem::removeAllBitmaps.

See Also: getGraphic

virtual void IlvGadgetItem::setHighlightTextPalette ( IlvPalette * palette )

virtual

Sets the palette used to draw the label of highlighted items.

The specified palette is locked.

Parameters

palette The palette used to draw the label of highlighted items.

See Also: getHighlightTextPalette

void IlvGadgetItem::setLabel	(	const char *	label,
		IlBoolean	copy = `IlTrue`
	)

Sets the item label.

To create labels that extend over several lines use the '
' character to start a new line.

Parameters

label	The new item label.
copy	A Boolean value specifying 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 IlvGadgetItem.`

See Also: getLabel, getMessage

void IlvGadgetItem::setLabelAlignment ( IlvAlignment alignment )

Sets the label alignment.

Sets the label alignment to alignment. This method applies only to labels composed of several lines.

Parameters

alignment The new label alignment. Valid values are: IlvLeft, IlvRight, or IlvCenter.

See Also: getLabelAlignment, setLabel

void IlvGadgetItem::setLabelOrientation	(	IlvOrientation	orientation,
		IlBoolean	flip = `IlFalse`
	)

Sets the orientation of the item label.

Parameters

orientation	The label orientation. Valid values are: `IlvHorizontal` and `IlvVertical`.
flip	A Boolean value specifying whether the label is drawn from top to bottom or from bottom to top.

See Also: getLabelOrientation

void IlvGadgetItem::setLabelPosition ( IlvPosition position )

Sets the label position relative to the picture.

Parameters

position The new position. Valid values are: IlvLeft, IlvRight, IlvTop, IlvBottom, IlvCenter, IlvTopLeft, IlvTopRight, IlvBottomLeft, IlvBottomRight

See Also: getLabelPosition

void IlvGadgetItem::setName ( const char * name )

Sets the item name.

Assigning a name to items helps you distinguish them by using a designation other than their labels.

Parameters

name	The new item name.

See Also: getName, IlvGadgetItemHolder::getItemByName

IlvNamedProperty* IlvGadgetItem::setNamedProperty ( IlvNamedProperty * property )

Sets the specified named property to the object.

Parameters

property The named property.

Returns: The named property with the same name that was previously associated with this object. You can delete it or keep it for further handling. If no previous named property with the same name was associated with this object, this member function returns 0.

See Also: getNamedProperty, removeNamedProperty

virtual void IlvGadgetItem::setNormalTextPalette ( IlvPalette * palette )

virtual

Sets the default palette used to draw an item.

The specified palette is locked.

Parameters

palette The default palette used to draw an item.

See Also: getNormalTextPalette

void IlvGadgetItem::setOpaque ( IlBoolean value )

Specifies whether the item should be opaque.

When an item is opaque, its label is drawn with a background.

Parameters

value A Boolean value specifying whether the item should be opaque (IlTrue) or not (IlFalse).

See Also: isOpaque, getOpaquePalette

virtual void IlvGadgetItem::setOpaquePalette ( IlvPalette * palette )

virtual

Sets the palette used to draw opaque items.

The specified palette is locked.

Parameters

palette The new opaque palette.

See Also: getOpaquePalette

void IlvGadgetItem::setProperty	(	const IlSymbol *	key,
		IlAny	value
	)

Sets the property whose symbol is specified to the item.

Parameters

key	The symbol representing the property.
value	The new value of the property. If value is `0`, the property is removed.

See Also: removeProperty, getProperty, hasProperty

virtual void IlvGadgetItem::setSelectionTextPalette ( IlvPalette * palette )

virtual

Sets the palette used to draw the label of selected items.

The specified palette is locked.

Parameters

palette The new selection palette.

See Also: getSelectionTextPalette

void IlvGadgetItem::setSensitive ( IlBoolean value )

Specifies whether the item should be sensitive or not.

Uses the insensitive bitmap, if one is provided. If such a bitmap is not provided, and if a sensitive bitmap is available, the insensitive bitmap is automatically computed.

Parameters

value A Boolean value specifying whether the item should be sensitive (IlTrue) or not (IlFalse).

See Also: isSensitive, getInsensitivePalette

void IlvGadgetItem::setSpacing ( IlUShort spacing )

Sets the spacing between the label and the picture of the item.

Parameters

spacing The new spacing.

See Also: getSpacing

void IlvGadgetItem::showLabel ( IlBoolean value = IlTrue )

Specifies whether the item label should be shown.

Specifies whether the item label should be shown (IlTrue) or not (IlFalse).

Parameters

value A Boolean value specifying whether the item label should be shown.

See Also: isShowingLabel, showPicture

void IlvGadgetItem::showPicture ( IlBoolean value = IlTrue )

Specifies whether the item picture should be shown.

Specifies whether the item picture should be shown (IlTrue) or not (IlFalse).

Parameters

value A Boolean value specifying whether the item picture should be shown.

virtual void IlvGadgetItem::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: DeclareGadgetItemInfoRO, DeclareGadgetItemInfo, IlvPredefinedGadgetItemIOMembers.

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Gadgets Package API Reference Guide