Base class for selection objects. More...

#include <ilviews/graphics/select.h>

Inheritance diagram for IlvDrawSelection:

Public Member Functions
virtual void	apply (IlvApplyObject f, IlAny a)
	Applies a function to objects that compose another object. More...

virtual void	applyReferences (IlvApplyObject f, IlAny a)
	Applies a function to objects that are referenced by another object. More...

virtual void	applyTransform (const IlvTransformer *t)
	Applies a transformation function to the graphic object. More...

virtual void	boundingBox (IlvRect &r, const IlvTransformer *t=0) const
	Retrieves the bounding box of the graphic object. More...

virtual void	computeRegion (IlvRegion &r, const IlvTransformer *t=0) const
	Returns the region covered by the object. More...

virtual IlBoolean	contains (const IlvPoint &p, const IlvPoint &tp, const IlvTransformer *t) const
	Checks whether a point is in the object. More...

virtual IlvDirection	direction (const IlvPoint &p, const IlvTransformer *t=0) const
	Returns the direction associated to a given point. More...

virtual void	draw (IlvPort dst, const IlvTransformer t, const IlvRegion *clip=0) const
	Draws the graphic object. More...

virtual void	drawHandle (IlvPort dst, IlUInt idx, const IlvRect &rect, const IlvRegion clip=0) const
	Draws a selection handle. More...

virtual IlBoolean	getHandleLocation (IlUInt idx, IlvPoint &p, const IlvTransformer *t) const =0
	Returns the location of a given selection handle. More...

IlBoolean	getHandleRect (IlUInt idx, IlvRect &rect, const IlvTransformer *t) const
	Returns the rectangle covered by a given selection handle. More...

virtual IlUInt	getHandlesCount (const IlvTransformer *t=0) const =0
	Returns the number of selection handles. More...

IlvGraphic *	getObject () const
	Returns the referenced graphic object. More...

IlvDim	getSize () const
	Returns the size of the selection handles. More...

IlBoolean	isVisible (const IlvPort *dst) const
	Indicates whether the selection object is visible. More...

virtual void	setMode (IlvDrawMode m)
	Sets the drawing mode of the object temporarily. More...

void	setObject (IlvGraphic *object)
	Changes the referenced graphic object. More...

virtual void	setOverwrite (IlBoolean o)
	Sets an overwrite mode that modifies how the drawing member functions operate. More...

virtual void	setPalette (IlvPalette *palette)
	Sets the internal palette. More...

void	setSize (IlvDim size)
	Changes the size of the selection handles. More...

virtual IlUInt	whichHandle (const IlvPoint &p, const IlvTransformer *t=0) const
	Returns the selection handle containing a given point. More...

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

virtual IlBoolean	zoomable () const
	Checks whether this object is zoomable. More...

Public Member Functions inherited from IlvSimpleGraphic
	IlvSimpleGraphic (IlvDisplay display, IlvPalette palette=0)
	Initializes a new `IlvSimpleGraphic`. More...

virtual	~IlvSimpleGraphic ()
	Destructor. More...

virtual void	applyResources (const char , const char , const char , const char , IlvDisplay *=0)
	Applies resources on a graphic object. More...

IlvIntensity	getAlpha () const
	Retrieves the alpha value. More...

IlvAntialiasingMode	getAntialiasingMode () const
	Retrieves the anti-aliasing mode. More...

IlvArcMode	getArcMode () const
	Retrieves the arc mode. More...

IlvColor *	getBackground () const
	Retrieves the background color. More...

IlvColorPattern *	getColorPattern () const
	Retrieves the color pattern. More...

virtual IlvDisplay *	getDisplay () const
	Retrieves the `IlvDisplay` instance. More...

IlvFillRule	getFillRule () const
	Retrieves the fill rule. More...

IlvFillStyle	getFillStyle () const
	Retrieves the fill style. More...

IlvFont *	getFont () const
	Retrieves the font. More...

IlvColor *	getForeground () const
	Retrieves the foreground color. More...

IlvGradientPattern *	getGradientPattern () const
	Retrieves the gradient pattern. More...

IlvLineStyle *	getLineStyle () const
	Retrieves the line style. More...

IlUShort	getLineWidth () const
	Retrieves the line width. More...

virtual IlvLookFeelHandler *	getLookFeelHandler () const
	Returns the look & feel handler used by this object. More...

virtual int	getLookupStringInputMethod (IlvEvent &event, char bufferReturn, int bytesBuffer, int statusReturn)
	Gets the preedit string from an input method. More...

IlvDrawMode	getMode () const
	Retrieves the draw mode. More...

IlBoolean	getOverwrite () const
	Retrieves the overwrite mode. More...

IlvPalette *	getPalette () const
	Retrieves the internal palette value. More...

IlvPattern *	getPattern () const
	Retrieves the pattern. More...

virtual void	invert (IlBoolean=IlFalse)
	Highlights the object. More...

virtual void	registerInputMethod () const
	Controls the connection of a graphic object to an input method. More...

virtual void	setAlpha (IlvIntensity)
	Sets the alpha value of the object. More...

virtual void	setAntialiasingMode (IlvAntialiasingMode)
	Sets the anti-aliasing mode of the object. More...

virtual void	setArcMode (IlvArcMode)
	Sets the arc mode of the object. More...

virtual void	setBackground (IlvColor *)
	Sets the background color of the object. More...

virtual void	setColorPattern (IlvColorPattern *)
	Sets the color pattern of the object. More...

virtual void	setFillRule (IlvFillRule)
	Sets the fill rule of the object. More...

virtual void	setFillStyle (IlvFillStyle)
	Sets the fill style of the object. More...

virtual void	setFocusValuesInputMethod (IlUShort count, const IlvImValue *values) const
	Controls the interaction between a simple graphic object and an input method. More...

virtual void	setFont (IlvFont *)
	Sets the font of the object. More...

virtual void	setForeground (IlvColor *)
	Sets the foreground color of the object. More...

virtual void	setGradientPattern (IlvGradientPattern *)
	Sets the gradient pattern of the object. More...

virtual void	setHolder (IlvGraphicHolder *)
	Sets the object's holder. More...

virtual void	setLineStyle (IlvLineStyle *)
	Sets the line style of the object. More...

virtual void	setLineWidth (IlUShort)
	Sets the line width of the object. More...

virtual void	setPattern (IlvPattern *)
	Sets the pattern of the object. More...

virtual void	setValuesInputMethod (IlUShort count, const IlvImValue *values) const
	Controls the interaction between a graphic object and an input method. More...

virtual void	unRegisterInputMethod () const
	Controls the disconnection of a graphic object from an input method. More...

virtual void	unsetFocusInputMethod () const
	Controls the interaction between a graphic object and an input method. More...

Public Member Functions inherited from IlvGraphic
void	addCallback (const IlSymbol *callbackType, IlvGraphicCallback callback)
	Adds a callback function to a callback list. More...

void	addCallback (const IlSymbol callbackType, const IlSymbol callbackName, const IlSymbol *script=0)
	Adds a callback function to a callback list. More...

void	addCallback (const IlSymbol *callbackType, IlvGraphicCallback callbackName, IlAny data)
	Adds a callback function to a callback list. More...

void	addClassProperty (const IlSymbol *key, IlAny value)
	Adds a property to this object's class. More...

void	addProperty (const IlSymbol *key, IlAny value)
	Adds a specific property to the object. More...

void	addTag (const IlSymbol *tag)
	Adds a tag. More...

IlBoolean	applyAttribute (const char *attributeClassName, IlInt value, IlAny checkData=0) const
	Applies attributes. More...

IlBoolean	applyAttribute (const char *attributeClassName, IlFloat value, IlAny checkData=0) const
	Applies attributes. More...

IlBoolean	applyAttribute (const char attributeClassName, const char value, IlAny checkData=0) const
	Applies attributes. More...

virtual void	callCallbacks (const IlSymbol *callbackType)
	Calls every callback of a given type. More...

const char *	className () const
	Returns the class name of an object. More...

virtual void	computeFocusRegion (IlvRegion &r, const IlvTransformer *t=0) const
	Computes the region needed for the drawing of the focus. More...

IlBoolean	contains (const IlvPoint &p) const
	Checks whether a point is in the object. More...

virtual IlvGraphic *	copy () const =0
	Copies this object. More...

void	draw (IlvPort dst, const IlvTransformer t, const IlvRect *clip) const
	Draws a graphic object. More...

virtual void	drawFocus (IlvPort dst, const IlvPalette palette, const IlvTransformer t=0, const IlvRegion clip=0) const
	Draws additional drawings for an object that has the keyboard focus. More...

virtual void	getAccessors (const IlSymbol const , const IlvValueTypeClass const **, IlUInt &) const
	Retrieves the list of available accessors of an object. More...

IlvGraphicCallback	getCallback (const IlSymbol *callbackType) const
	Gets a callback. More...

IlvGraphicCallback	getCallback () const
	Gets the main callback function. More...

IlAny	getCallbackData (const IlSymbol *callbackType, IlvGraphicCallback callback) const
	Gets a callback user data. More...

IlAny	getCallbackData (const IlSymbol callbackType, const IlSymbol callbackName) const
	Gets a callback user data. More...

IlSymbol *	getCallbackName (const IlSymbol *callbackType) const
	Gets the name of a callback. More...

IlSymbol *	getCallbackName () const
	Gets the symbol that identifies the main callback. More...

virtual IlUInt	getCallbackTypes (const char const names, const IlSymbol const **types) const
	Gets the number of register callback types for the object. More...

virtual IlvGraphic *	getChildAt (IlUInt index) const
	Returns the sub-object of the graphic object specified by index. More...

virtual IlvGraphic *	getChildByName (const char *name) const
	Returns the sub-object of the graphic object specified by a name. More...

virtual IlUInt	getChildCount () const
	Returns the number of children of this graphic object. More...

virtual IlInt	getChildIndex (const IlvGraphic *object) const
	Returns the index of the specified sub-object in this graphic object. More...

virtual IlvGraphic const	getChildren (IlUInt &count) const
	Returns an array containing the sub-objects of this graphic object. More...

virtual IlvClassInfo *	getClassInfo () const
	Gets class information. More...

IlAny	getClassProperty (const IlSymbol *key, IlBoolean checkParent=IlFalse) const
	Retrieves the indicated property value in the class of this object. More...

IlAny	getClientData () const
	Gets client data. More...

virtual const char *	getDefaultInteractor () const
	Gets the name of the default interactor for this object. More...

virtual IlvGraphicHolder *	getHolder () const
	Gets a pointer to an object's holder. More...

IlvInteractor *	getInteractor () const
	Returns the interactor associated with the current object. More...

const char *	getName () const
	Gets the name of the object. More...

IlvNamedProperty *	getNamedProperty (const IlSymbol *name) const
	Gets a named property. More...

IlSymbol *	getNextFocusGraphic () const
	Gets the next object in the focus chain. More...

IlSymbol *	getPreviousFocusGraphic () const
	Gets the previous object in the focus chain. More...

IlAny	getProperty (const IlSymbol *key) const
	Gets a property. More...

IlvSmartSet *	getSmartSet () const
	Gets the smart set object containing this graphic object. More...

const IlSymbol const	getTags (IlUInt &count) const
	Returns all the tags applied to this object. More...

IlvDim	h () const
	Gets the height value of the object. More...

void	h (IlvDim h)
	Sets the height value of the object. More...

IlBoolean	hasCallback (const IlSymbol *callbackType, IlvGraphicCallback callback) const
	Checks whether a callback function is in a callback list. More...

IlBoolean	hasCallback (const IlSymbol callbackType, const IlSymbol callbackName) const
	Checks whether a callback function is in a callback list. More...

IlBoolean	hasCallbackData (const IlSymbol *callbackType, IlvGraphicCallback callback) const
	Checks whether a callback function has user data. More...

IlBoolean	hasCallbackData (const IlSymbol callbackType, const IlSymbol callbackName) const
	Checks whether a callback function has user data. More...

const IlvClassInfo *	hasClassProperty (const IlSymbol *key, IlBoolean s=IlFalse) const
	Checks for a class where the keyed property exists. More...

IlBoolean	hasProperty (const IlSymbol *key) const
	Checks whether the object has a particular property. More...

IlBoolean	hasTag (const IlSymbol *tag) const
	Checks whether the object has a specific tag. More...

virtual IlBoolean	inside (const IlvRegion &r, const IlvTransformer *t=0) const
	Determines whether an object with transformation applied is inside the bounding box. More...

IlBoolean	inside (const IlvRect &r, const IlvRect &tr, const IlvTransformer *t=0) const
	Determines whether an object with transformation applied is inside the bounding box. More...

IlBoolean	inside (const IlvRect &r) const
	Determines whether a rectangle is inside the bounding box. More...

virtual IlBoolean	intersects (const IlvRegion &r, const IlvTransformer *t=0) const
	Checks whether a region intersects the bounding box with transformation applied. More...

IlBoolean	intersects (const IlvRect &r, const IlvRect &tr, const IlvTransformer *t=0) const
	Checks whether a rectangle intersects the bounding box with transformation applied. More...

IlBoolean	intersects (const IlvRect &r) const
	Checks whether a rectangle intersects the bounding box. More...

IlBoolean	isFirstFocusGraphic () const
	Checks whether the object is first in the focus chain. More...

IlBoolean	isFocusable () const
	Checks whether the object can receive the keyboard focus. More...

IlBoolean	isInSmartSet () const
	Checks whether a graphic object belongs to a smart set. More...

IlBoolean	isLastFocusGraphic () const
	Checks whether the object is last in the focus chain. More...

IlBoolean	isSensitive () const
	Checks whether the object is sensitive. More...

IlBoolean	isSubtypeOf (const char *parentClass) const
	Checks whether this object's class is a subclass of a given parent class. More...

IlBoolean	isSubtypeOf (const IlvClassInfo *classInfo) const
	Checks whether this object's class is a subclass. More...

virtual void	move (IlvPos x, IlvPos y)
	Moves the graphic object. More...

void	move (const IlvPoint &p)
	Moves the graphic object. More...

void	moveResize (const IlvRect &size)
	Moves and resizes a graphic object. More...

virtual IlBoolean	needsInputContext () const
	Indicates whether the graphic instance can connect to an input method for locale dependent input. More...

virtual void	print (std::ostream &out, int level=0) const
	Prints for debugging purposes. More...

void	removeCallback (const IlSymbol *callbackType, IlvGraphicCallback callback)
	Removes a callback function from a callback list. More...

void	removeCallback (const IlSymbol callbackType, const IlSymbol callbackName)
	Removes a callback function from a callback list. More...

IlBoolean	removeClassProperty (const IlSymbol *key)
	Removes a property from this object's class. More...

void	removeInteractor ()
	Removes the interactor from the current object. More...

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

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

void	removeTag (const IlSymbol *tag)
	Removes a tag. More...

IlBoolean	replaceClassProperty (const IlSymbol *key, IlAny value)
	Replaces a property in this object's class. More...

IlBoolean	replaceProperty (const IlSymbol *key, IlAny value)
	Replaces a property. More...

virtual void	resize (IlvDim newW, IlvDim newH)
	Resizes a graphic object. More...

virtual void	rotate (const IlvPoint &center, IlFloat angle)
	Rotates a graphic object. More...

virtual void	scale (IlFloat zoomX, IlFloat zoomY)
	Scales the graphic object. More...

void	setCallback (const IlSymbol *callbackType, IlvGraphicCallback callback)
	Sets a new callback. More...

void	setCallback (const IlSymbol callbackType, const IlSymbol callbackName, const IlSymbol *script=0)
	Removes all previously set callbacks. More...

void	setCallback (const IlSymbol *callbackType, IlvGraphicCallback callbackName, IlAny data)
	Removes all previously set callbacks. More...

void	setCallback (IlvGraphicCallback callback, IlAny data)
	Sets the main callback function. More...

void	setCallbackData (const IlSymbol *callbackType, IlvGraphicCallback callback, IlAny data)
	Sets the callback user data for a callback function. More...

void	setCallbackData (const IlSymbol callbackType, const IlSymbol callbackName, IlAny data)
	Sets the callback user data for a callback function. More...

void	setCallbackName (const IlSymbol *callbackName)
	Sets the symbol that identifies the main callback. More...

void	setClientData (IlAny clientData)
	Sets client data. More...

void	setFirstFocusGraphic ()
	Sets the object to be first in the focus chain.

void	setFocusable (IlBoolean value)
	Set the focusable state of the object. More...

IlBoolean	setInteractor (IlvInteractor *inter)
	Attaches an interactor to the current object. More...

IlBoolean	setInteractor (const char *name)
	Attaches an interactor to this graphic object. More...

void	setLastFocusGraphic ()
	Sets the object to be last in the focus chain.

virtual void	setName (const char *name)
	Sets the name of the object. More...

IlvNamedProperty *	setNamedProperty (IlvNamedProperty *property)
	Sets a named property on the object. More...

virtual void	setNeedsInputContext (IlBoolean val)
	Specifies whether the graphic object should have locale dependent input. More...

void	setNextFocusGraphic (IlSymbol *name)
	Sets the object to be next in the focus chain. More...

void	setPreviousFocusGraphic (IlSymbol *name)
	Sets an object as previous in the focus chain. More...

void	setProperty (const IlSymbol *key, IlAny value)
	Sets a property of the object to a value. More...

virtual void	setSensitive (IlBoolean value)
	Sets the sensitivity of the object. More...

virtual void	symmetry (IlvDirection axis)
	Flips a graphic object. More...

virtual void	translate (IlvPos dx, IlvPos dy)
	Applies a transformation function on a graphic object. More...

IlvDim	w () const
	Gets the width value of the object. More...

void	w (IlvDim w)
	Sets the width value of the object. More...

IlvPos	x () const
	Gets the `x` coordinate value of the object. More...

void	x (IlvPos x)
	Sets the `x` coordinate value of the object. More...

IlvPos	y () const
	Gets the `y` coordinate value of the object. More...

void	y (IlvPos y)
	Sets the `y` coordinate value of the object. More...

Public Member Functions inherited from IlvValueInterface
virtual IlBoolean	applyValue (const IlvValue &value)
	Apply an accessor. More...

virtual IlBoolean	changeValue (const IlvValue &val)
	Changes the value of an accessor. More...

virtual IlBoolean	changeValues (const IlvValue *values, IlUShort count=0)
	Changes several accessor values simultaneously. More...

virtual IlvValue &	queryValue (IlvValue &val) const
	Retrieves an accessor value. More...

virtual void	queryValues (IlvValue *values, IlUShort count) const
	Retrieves multiple accessor values simultaneously. More...

Static Public Member Functions
static IlvPalette *	GetDefaultPalette (IlvDisplay *display)
	Returns the default palette used to create selection objects. More...

static IlvDim	GetDefaultSize ()
	Returns the default size for the selection handles. More...

static IlBoolean	IsVisibleWhenObjectIsInvisible ()
	Returns the visibility policy for selection objects. More...

static void	SetDefaultPalette (IlvPalette *palette)
	Sets the default palette used to create selection objects. More...

static void	SetDefaultSize (IlvDim size)
	Sets the default size for the selection handles. More...

static void	SetVisibleWhenObjectIsInvisible (IlBoolean f)
	Sets the visibility policy for selection objects. More...

Static Public Member Functions inherited from IlvGraphic
static void	AddProperty (const IlSymbol *key, IlAny value)
	Adds a property to this object's class. More...

static void	AddToCallbackTypeList (IlUInt &count, const char const names, const IlSymbol const *types, const char newName, const IlSymbol *newType)
	Adds a callback to a list. More...

static void	AllowZoom (IlBoolean az)
	Sets or inhibits zooming. More...

static IlvClassInfo *	ClassInfo () const
	Gets class information. More...

static IlAny	GetProperty (const IlSymbol *key, IlBoolean checkSuperClass=IlFalse)
	Retrieves the property value associated with the key in this object's class. More...

static const IlvClassInfo *	HasProperty (const IlSymbol *key, IlBoolean checkSuperClass=IlFalse)
	Checks for the existence of a property for this object's class hierarchy. More...

static IlBoolean	IsZoomAllowed ()
	Checks whether zoomable objects can display themselves when zooming out. More...

static IlvGraphic *	read (IlvInputFile &file, IlvPalette *palette)
	Reads an object description from a file. More...

static IlBoolean	RemoveProperty (const IlSymbol *key)
	Removes a property from this object's class. More...

static IlBoolean	ReplaceProperty (const IlSymbol *key, IlAny value)
	Replaces a property in this object's class. More...

Protected Member Functions
	IlvDrawSelection (IlvDisplay display, IlvGraphic object, IlvDim size=0, IlvPalette *palette=0)
	Constructor. More...

Detailed Description

Base class for selection objects.

Library: views

IlvDrawSelection is the abstract base class for selection objects. A selection object draws several selection handles that can be used to edit its associated graphic object.

Constructor & Destructor Documentation

IlvDrawSelection::IlvDrawSelection	(	IlvDisplay *	display,
		IlvGraphic *	object,
		IlvDim	size = `0`,
		IlvPalette *	palette = `0`
	)

protected

Constructor.

The constructor initializes an IlvDrawSelection object with the IlvGraphic object object. If palette is equal to 0, then this new instance will use the palette set with the IlvDrawSelection::SetDefaultPalette method. The parameter size indicates the size of the squares to be drawn (the actual dimension of the squares will be twice this size). If size is equal to 0, then the object will be initialized with the size returned by the IlvDrawSelection::GetDefaultSize() method.

Parameters

display	The display connection that will handle the drawing of this object.
object	The selected object to which this instance is associated.
size	The size of the squares
palette	The palette used to draw this object.

Member Function Documentation

virtual void IlvDrawSelection::apply	(	IlvApplyObject	function,
		IlAny	arg
	)

virtual

Applies a function to objects that compose another object.

Implements a technique for applying a function to objects that compose another object. This member function is useful only when the object is composite one like an instance of IlvGraphicSet or IlvGraphicHandle. The IlvApplyObject function successively receives each of the components as well as the arg parameter.

Parameters

function	The function to be applied.
arg	The argument sent to function.

Reimplemented from IlvGraphic.

virtual void IlvDrawSelection::applyReferences	(	IlvApplyObject	function,
		IlAny	arg
	)

virtual

Applies a function to objects that are referenced by another object.

Implements a technique for applying a function to objects that are referenced by another object.

Parameters

function	The function to be applied.
arg	An argument parameter.

Reimplemented from IlvGraphic.

virtual void IlvDrawSelection::applyTransform ( const IlvTransformer * t )

virtual

Applies a transformation function to the graphic object.

Applies the transformer t to the shape of the object. Unless the transformation is a scaling operation, the result of applying it to certain objects can be insignificant. For example, applying a non-scaling transformer to an IlvRectangle object is meaningless, since the rectangle remains a rectangle. On the other hand, meaningful transformations can be applied to objects that are instances of types such as IlvLine or IlvPolyPoints.

Note: applyTransform() is one of the most important method to be rewritten for classes derived from IlvGraphic, since it is called by the resize(), move(), moveResize(), scale(), etc., methods.

Parameters

t	The transformer value. If `0`, no transformation is performed.

Implements IlvGraphic.

virtual void IlvDrawSelection::boundingBox	(	IlvRect &	bbox,
		const IlvTransformer *	t = `0`
	)		const

virtual

Retrieves the bounding box of the graphic object.

Sets bbox, the rectangle reference parameter, to be the bounding box of the object. Since the object can appear within a transformed environment (for example, in a multiview editor), an IlvTransformer object occurs as an optional parameter in order to compute the bounding box in the coordinate system of the transformed environment.

Parameters

bbox	The bounding box to be set.
t	A transformer value or `0` if there is no transformation.

Implements IlvGraphic.

Reimplemented in IlvReshapeSelection, and IlvPolyPointsSelection.

virtual void IlvDrawSelection::computeRegion	(	IlvRegion &	r,
		const IlvTransformer *	t = `0`
	)		const

virtual

Returns the region covered by the object.

This method returns in region the region that covers the selection object if it is displayed with the transformer t. The default implementation fills the region with the rectangles returned by the IlvDrawSelection::getHandleRect() method for each selection handle.

Parameters

r	The returned region.
t	The transformer applied to this object.

Reimplemented in IlvReshapeSelection, and IlvPolyPointsSelection.

virtual IlBoolean IlvDrawSelection::contains	(	const IlvPoint &	p,
		const IlvPoint &	tp,
		const IlvTransformer *	t
	)		const

virtual

Checks whether a point is in the object.

Checks whether the coordinates are located in the shape of this object. A transformation parameter allows you to use the view's coordinate system for this test.

Parameters

p	The point to be tested.
tp	The transformed point obtained by applying the transformer t to the point p.
t	A transformer value, or `0` if there is no transformation.

Returns: IlTrue when the point p lies inside the outline of the object.

Reimplemented from IlvGraphic.

virtual IlvDirection IlvDrawSelection::direction	(	const IlvPoint &	p,
		const IlvTransformer *	t = `0`
	)		const

virtual

Returns the direction associated to a given point.

Returns the direction associated to the selection handles containing the point p. This method is used to assign a resizing behavior to selection handles. The default implementation returns IlvBadPosition.

Parameters

p	The considered point.
t	The transformer applied to this object.

Returns: The direction value of the selection handle containing the point p, or IlvBadPosition if p doesn't lie in any of the selection handle.

See also: IlvReshapeSelection.

Reimplemented in IlvReshapeSelection.

virtual void IlvDrawSelection::draw	(	IlvPort *	dst,
		const IlvTransformer *	t,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws the graphic object.

Draws the object in the given IlvPort using the transformer t.

Parameters

dst	The destination port this object is drawn onto.
t	The transformer value. If `0`, no transformation is performed.
clip	The clipping region, relative to the transformed object, or `0` if none.

Implements IlvGraphic.

Reimplemented in IlvReshapeSelection, IlvSplineSelection, and IlvPolyPointsSelection.

virtual void IlvDrawSelection::drawHandle	(	IlvPort *	dst,
		IlUInt	idx,
		const IlvRect &	rect,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws a selection handle.

Draws the selection handle of index idx, defined by the rectangle rect. The default implementation draws rectangle filled with the background color of the object's palette and outlined with the foreground color of the object's palette.

Parameters

dst	The drawing port.
idx	The index of the considered handle.
rect	The rectangle of the considered handle.
clip	The clip applied to the drawing.

static IlvPalette* IlvDrawSelection::GetDefaultPalette ( IlvDisplay * display )

static

Returns the default palette used to create selection objects.

Returns the default palette that will be used to create selection objects through the display connection dpy. This palette is used when 0 is passed to the palette parameter of the IlvDrawSelection constructor.

Parameters

display The display connection for the created objects

Returns: The default palette.

See also: SetDefaultPalette().

static IlvDim IlvDrawSelection::GetDefaultSize ( )

static

Returns the default size for the selection handles.

This size is used when 0 is passed to the size parameter of the IlvDrawSelection constructor.

Returns: The default size for the selection handles.

See also: SetDefaultSize().

virtual IlBoolean IlvDrawSelection::getHandleLocation	(	IlUInt	idx,
		IlvPoint &	p,
		const IlvTransformer *	t
	)		const

pure virtual

Returns the location of a given selection handle.

This method must be redefined in subclasses.

Parameters

idx	The index of the considered handle.
p	The returned point.
t	The transformer applied to the object.

Returns: IlTrue if idx is a valid index and IlFalse otherwise.

Implemented in IlvReshapeSelection, IlvSplineSelection, and IlvPolyPointsSelection.

IlBoolean IlvDrawSelection::getHandleRect	(	IlUInt	idx,
		IlvRect &	rect,
		const IlvTransformer *	t
	)		const

Returns the rectangle covered by a given selection handle.

This method returns the square of size 2*getSize() centered at the point returned by the IlvDrawSelection::getHandleLocation() method.

Parameters

idx	The index of the considered handle.
rect	The returned rectangle.
t	The transformer applied to the object.

Returns: IlTrue if idx is a valid index and IlFalse otherwise.

virtual IlUInt IlvDrawSelection::getHandlesCount ( const IlvTransformer * t = 0 ) const

pure virtual

Returns the number of selection handles.

This method must be redefined in subclasses.

Parameters

t	The transformer applied to the object.

Returns: The number of selection handles.

Implemented in IlvReshapeSelection, and IlvPolyPointsSelection.

IlvGraphic* IlvDrawSelection::getObject ( ) const

Returns the referenced graphic object.

Returns: The referenced graphic object.

IlvDim IlvDrawSelection::getSize ( ) const

Returns the size of the selection handles.

Returns: Half the length of the side of the square used to draw the selection handles.

See also: setSize().

IlBoolean IlvDrawSelection::isVisible ( const IlvPort * dst ) const

Indicates whether the selection object is visible.

The visibility of a selection object depends on the policy specified by the IlvDrawSelection::IsVisibleWhenObjectIsInvisible() method.

Parameters

dst	The considered port.

Returns: IlTrue if the selection object is visible in the port dst, and IlFalse otherwise.

static IlBoolean IlvDrawSelection::IsVisibleWhenObjectIsInvisible ( )

static

Returns the visibility policy for selection objects.

If this method returns IlFalse, then the selection handle will be invisible if its referenced object is invisible. The default value, which is IlTrue, indicates that the selection remains visible even when the object is not visible.

Returns: The visibility policy for selection objects.

static void IlvDrawSelection::SetDefaultPalette ( IlvPalette * palette )

static

Sets the default palette used to create selection objects.

Sets palette as the default palette that will be used to create selection objects. The initial default palette is build using two application resources:

selHandleFg for the default foreground.
selHandleBg for the default background.

If these resources are not defined, selection handles are drawn with a white background and a black foreground.

Parameters

palette The new default palette.

See also: GetDefaultPalette().

static void IlvDrawSelection::SetDefaultSize ( IlvDim size )

static

Sets the default size for the selection handles.

Parameters

size	The new default size for the selection handles..

See also: GetDefaultSize().

virtual void IlvDrawSelection::setMode ( IlvDrawMode mode )

virtual

Sets the drawing mode of the object temporarily.

Changing the IlvDrawMode attribute of an object is considered a temporary operation. You have to set the mode to its default value when you no longer need another mode different from the value IlvModeSet. The drawing mode information is passed to the palette of the graphic object (see the IlvPalette::setOverwrite() method for more details).

Parameters

mode	The drawing mode to be set.

Reimplemented from IlvSimpleGraphic.

void IlvDrawSelection::setObject ( IlvGraphic * object )

Changes the referenced graphic object.

Parameters

object The new associated graphic object.

virtual void IlvDrawSelection::setOverwrite ( IlBoolean over )

virtual

Sets an overwrite mode that modifies how the drawing member functions operate.

Modifies the way the drawing member functions operate. The information is passed to the palette of the graphic object (see the IlvPalette::setOverwrite() method for more details).

Parameters

over	If `IlFalse`, sets selective hidden drawing operations.

Reimplemented from IlvSimpleGraphic.

virtual void IlvDrawSelection::setPalette ( IlvPalette * palette )

virtual

Sets the internal palette.

The previous palette is unlocked, and palette is locked.

Parameters

palette The new palette of this object.

Reimplemented from IlvSimpleGraphic.

void IlvDrawSelection::setSize ( IlvDim size )

Changes the size of the selection handles.

Sets to 2 * size the size of the square used by the object to draw the selection handles.

Parameters

size	The new size.

See also: getSize().

static void IlvDrawSelection::SetVisibleWhenObjectIsInvisible ( IlBoolean f )

static

Sets the visibility policy for selection objects.

Parameters

f	A Boolean indicating whether the selection handle is visible when its referenced object is invisible.

See also: IsVisibleWhenObjectIsInvisible().

virtual IlUInt IlvDrawSelection::whichHandle	(	const IlvPoint &	p,
		const IlvTransformer *	t = `0`
	)		const

virtual

Returns the selection handle containing a given point.

Parameters

p	The considered point.
t	The transformer applied to the object.

Returns: The index of the handle containing the point p, or IlvBadIndex if it does not lie in any of the handle.

Reimplemented in IlvReshapeSelection, and IlvSplineSelection.

virtual void IlvDrawSelection::write ( IlvOutputFile & output ) 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 read(). Information concerning any IlvPalette object attached to this object is written out by the object containers. All other information, such as the position and size of the object, is written out by this virtual member function.

For example, suppose we have an IlvLabel class that implements a graphic object drawn as a text string at a given position. It maintains its position in an internal IlvPoint field called _position and its textual content in an internal character array field called _text. The only information we need to save is the contents of those fields. So, the member function write() of such an object should have the following form:

void
IlvLabel::write(IlvOutputFile& file) const
{
    // Save the position field
    file.getStream() << IlvSpc() << _position;
    // Save the text field
    IlvWriteString(file.getStream(), _text);
}

Parameters

output The the output file to be written to.

See also: DeclareTypeInfo().

Implements IlvGraphic.

virtual IlBoolean IlvDrawSelection::zoomable ( ) const

virtual

Checks whether this object is zoomable.

Returns: IlTrue if the graphic object can be zoomed, and IlFalse otherwise.

See also: IsZoomAllowed(), AllowZoom().

Reimplemented from IlvGraphic.

Public Member Functions

Static Public Member Functions

Protected Member Functions

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Constructor & Destructor Documentation

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