IlvGadgetManager Class Reference

Gadget class. More...

#include <ilviews/gadmgr/gadmgr.h>

Inheritance diagram for IlvGadgetManager:

Public Member Functions
	IlvGadgetManager (IlvDisplay *display, int layers=2, IlBoolean useacc=IlTrue, IlUShort maxInList=IlvMaxObjectsInList, IlUShort maxInNode=IlvMaxObjectsInList)
	Constructor. More...
virtual void	addObject (IlvGraphic *obj, IlBoolean redraw=IlTrue, int layer=-1)
	Adds an object to the manager. More...
virtual void	addObject (const char *objectName, IlvGraphic *obj, IlBoolean redraw=IlTrue, int layer=-1)
	Adds a graphic object to a manager, and then names the object. More...
virtual void	addView (IlvView *view)
	Adds a view to the manager. More...
virtual IlBoolean	allowFocus (IlBoolean flag)
	Enable or disables keyboard focus handling. More...
virtual void	applyResize (IlvView *view, IlFloat sx, IlFloat sy, IlBoolean redraw=IlTrue)
	Resolves attachment constraints when the view is resized. More...
void	applyResize (IlvView *view, IlBoolean redraw=IlTrue)
	Resolves attachment constraints when the view is resized. More...
virtual void	applyResize (IlvView *view, IlvGraphic *g, IlFloat sx, IlFloat sy, IlBoolean redraw=IlTrue)
	Resolves attachment constraints for an object when the view is resized. More...
void	applyResize (IlvView *view, IlvGraphic *g, IlBoolean redraw=IlTrue)
	Resolves attachment constraints for an object when the view is resized. More...
IlBoolean	autoResize (IlBoolean a)
	Sets the auto resizing mechanism. More...
virtual IlBoolean	dispatchToObjects (IlvEvent &event, IlvView *view)
	Dispatches an event to the appropriate graphic objects. More...
virtual void	drawFocus (IlvPort *dst, const IlvTransformer *t=0, const IlvRegion *clip=0) const
	Draws the representation of the keyboard focus. More...
virtual IlvGraphic *	getFirstFocusGraphic () const
	Returns the first graphic object in the focus chain. More...
virtual IlvGraphic *	getFocus () const
	Returns the graphic object with the keyboard focus. More...
virtual IlvGraphic *	getGrab () const
	Returns the grabbing graphic object. More...
virtual IlvGraphic *	getLastFocusGraphic () const
	Returns the last graphic object in the focus chain. More...
IlvLookFeelHandler *	getLookFeelHandler () const
	Returns the look and feel handler associated with this gadget manager. More...
virtual IlvGraphic *	getNextFocusGraphic (IlvGraphic *object) const
	Returns the next graphic object in the focus chain. More...
virtual IlvGraphic *	getPreviousFocusGraphic (IlvGraphic *object) const
	Returns the previous graphic object in the focus chain. More...
IlBoolean	isAutoResizing () const
	Indicates whether the auto resizing mechanism is enabled. More...
virtual IlBoolean	isFocusAllowed () const
	Indicates if keyboard focus handling is enabled. More...
virtual void	moveFocusAfter (IlBoolean redraw=IlTrue)
	Moves the keyboard focus to the next graphic object in the focus chain. More...
virtual void	moveFocusBefore (IlBoolean redraw=IlTrue)
	Moves the keyboard focus to the previous graphic object in the focus chain. More...
virtual void	removeGrab ()
virtual IlBoolean	removeView (IlvView *view)
	Removes a view from the manager view list. More...
virtual void	setBackground (IlvView *view, IlvColor *color, IlvBitmap *bitmap=0)
	Sets the background of a manager view. More...
virtual void	setFocus (IlvGraphic *graphic=0, IlBoolean redraw=IlTrue)
	Sets the keyboard focus on a graphic object. More...
virtual void	setGrab (IlvGraphic *object)
	Sets a graphic object to grab events. More...
void	setLookFeelHandler (IlvLookFeelHandler *lfh)
	Sets the look and feel handler of this gadget manager. More...
virtual void	setSelected (IlvGraphic *, IlBoolean selected=IlTrue, IlBoolean erase=IlTrue)
	Selects or deselects a graphic object. More...
Public Member Functions inherited from IlvManager
	IlvManager (IlvDisplay *display, int layers=2, IlBoolean useacc=IlTrue, IlUShort maxInList=IlvMaxObjectsInList, IlUShort maxInNode=IlvMaxObjectsInList)
	Constructor. More...
virtual	~IlvManager ()
	Destructor. More...
IlvMgrView *	getView (const IlvView *v) const
	Returns the IlvMrgView of a manager view. More...
void	applyInside (int layer, IlvApplyObject func, IlAny arg, const IlvRect &rect, const IlvTransformer *t=0, IlBoolean redraw=IlTrue)
	Applies a user function to objects of a layer located in a rectangle. More...
void	applyIntersects (int layer, IlvApplyObject func, IlAny arg, const IlvRect &rect, const IlvTransformer *t=0, IlBoolean redraw=IlTrue)
	Applies a user function to objects of a layer intersecting a rectangle. More...
void	applyInside (IlvApplyObject func, IlAny arg, const IlvRect &rect, const IlvTransformer *t=0, IlBoolean redraw=IlTrue)
	Applies a user function to graphic objects located in a rectangle. More...
void	applyIntersects (IlvApplyObject func, IlAny arg, const IlvRect &rect, const IlvTransformer *t=0, IlBoolean redraw=IlTrue)
	Applies a user function to graphic objects intersecting a rectangle. More...
IlBoolean	isInApply () const
	Indicates if an applyTo...() method is being executed. More...
virtual void	applyToObjects (IlUInt count, IlvGraphic *const *objects, IlvApplyObject func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to a set of graphic objects. More...
virtual void	applyToObjects (IlUInt count, IlvGraphic *const *objects, IlvApplyFunction func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to a set of graphic objects. More...
virtual void	applyToObjects (int layer, IlvApplyObject func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to all graphic objects of a manager layer. More...
virtual void	applyToObjects (int layer, IlvApplyFunction func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to the graphic objects of a manager layer. More...
virtual void	applyToObject (IlvGraphic *object, IlvApplyObject func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to a graphic object. More...
IlvManagerObjectInteractor *	getObjectInteractor (const IlvGraphic *object) const
	The object interactor associated with a graphic object. More...
IlBoolean	setObjectInteractor (IlvGraphic *object, IlvManagerObjectInteractor *i)
	Sets an object interactor on a graphic object. More...
void	setInteractor (IlvManagerViewInteractor *i, const IlvView *view=0)
	Sets a view interactor on a manager view. More...
void	removeInteractor (const IlvView *view)
	Removes the view interactor from a manager view. More...
IlvManagerViewInteractor *	getInteractor (const IlvView *view) const
	Returns the view interactor associated with a manager view. More...
void	registerCallback (const char *callbackName, IlvGraphicCallback callback)
	Registers a callback and its name. More...
void	unregisterCallback (const char *callbackName)
	Removes the callback function registered with the specified name from the callback list. More...
virtual char *	cut (IlUInt &count)
	Saves the selected graphic objects in a string and then deletes them. More...
virtual char *	copy (IlUInt &count)
	Saves all the selected graphic objects in a string. More...
virtual void	paste (const IlvView *view, const char *str, IlvPoint &location)
	Reads graphic objects from a string. More...
void	cutToClipboard ()
	Saves the selected graphic objects in the clipboard and deletes them. More...
void	copyToClipboard ()
	Saves the selected graphic objects in the clipboard. More...
void	pasteFromClipboard (const IlvView *view, IlvPoint &location)
	Reads graphic objects from the clipboard and adds them to the manager. More...
virtual IlvGraphicSet *	group (IlUInt count, IlvGraphic *const *objects)
	Groups several graphic objects. More...
virtual void	unGroup (IlvGraphic *object, IlBoolean undoCommand=IlTrue)
	Ungroups the graphic objects of a graphic set. More...
virtual void	eraseRegion (IlvView *view, const IlvRegion &region) const
	Erases a region of a manager view. More...
virtual void	draw (IlvView *view, IlBoolean erase, const IlvRegion *clip=0) const
	Draws the graphic objects of the manager in a manager view. More...
void	draw (IlvPort *dst, const IlvTransformer *t=0, const IlvRegion *region=0, const IlvRegion *clip=0) const
	Draws the contents of a manager in a destination port. More...
void	draw (int layer, IlvPort *dst, const IlvTransformer *t=0, const IlvRegion *region=0, const IlvRegion *clip=0) const
	Draws the contents of a manager layer in a destination port. More...
void	draw () const
	Draws the contents of the manager. More...
void	reDraw () const
	Erases all manager views and draws the contents of the manager. More...
void	reDraw (const IlvGraphic *object, IlBoolean erase=IlTrue) const
	Draws a graphic object in all manager views. More...
void	reDraw (IlUInt count, const IlvGraphic *const *objects, IlBoolean erase=IlTrue) const
	Draws a set of graphic objects in all manager views. More...
void	bufferedDraw (IlvView *view, const IlvRect &rect) const
	Redraws a rectangular area of a manager view by means of a temporary pixmap. More...
void	bufferedDraw (IlvView *view, const IlvRegion &region) const
	Redraws a region of a manager view by means of a temporary pixmap. More...
void	bufferedDraw (IlvView *view, const IlvGraphic *object) const
	Draws a graphic object in a manager view by means of a temporary pixmap. More...
const char *	getName () const
	Returns the name of the manager. More...
virtual void	setName (const char *name)
	Sets the name of the manager. More...
IlvDisplay *	getDisplay () const
	Returns the display. More...
IlvPalette *	getPalette () const
	Returns the manager palette. More...
IlBoolean	isModified () const
	Indicates whether the manager contents have been modified. More...
void	setModified (IlBoolean value)
	Sets the modification status of the manager. More...
IlUInt	getCardinal () const
	Returns the number of graphic objects. More...
virtual IlvGraphic *const *	getObjects (IlUInt &count) const
	Returns the graphic objects stored in the manager. More...
virtual IlvGraphic *const *	getObjects (int layer, IlUInt &count) const
	Returns the graphic objects stored in a manager layer. More...
virtual IlvGraphic *	lastContains (const IlvPoint &p, const IlvView *view) const
	Returns the graphic object containing a given point. More...
IlvGraphic *	lastContains (int layer, const IlvPoint &p, const IlvView *view) const
	Returns the graphic object containing a given point in a layer. More...
IlvGraphic *	filteredLastContains (const IlvPoint &p, const IlvView *view, const IlvGraphicFilter &f) const
	Returns the graphic object containing a given point. More...
IlvGraphic *	filteredLastContains (int layer, const IlvPoint &p, const IlvView *view, const IlvGraphicFilter &f) const
	Returns the graphic object containing a given point in a layer. More...
IlvGraphic *const *	allContains (const IlvPoint &p, const IlvView *view, IlUInt &count) const
	Returns all graphic objects containing a given point. More...
IlvGraphic *const *	allContains (int layer, const IlvPoint &p, const IlvView *view, IlUInt &count) const
	Returns all graphic objects containing a given point in a layer. More...
IlvGraphic *	firstIntersects (const IlvRegion &tr, const IlvTransformer *t) const
	Returns the first object intersecting a region. More...
IlvGraphic *	firstIntersects (int layer, const IlvRegion &tr, const IlvTransformer *t) const
	Returns the first object of a layer intersecting a region. More...
IlvGraphic *const *	allInside (IlUInt &count, const IlvRect &rect, const IlvTransformer *t=0) const
	Returns all graphic objects located in a rectangle. More...
IlvGraphic *const *	allIntersects (IlUInt &count, const IlvRect &rect, const IlvTransformer *t=0) const
	Returns all graphic objects intersecting a rectangle. More...
IlvGraphic *const *	allIntersects (int layer, IlUInt &count, const IlvRect &rect, const IlvTransformer *t=0) const
	Returns all graphic objects of a layer intersecting a rectangle. More...
IlvGraphic *const *	allInside (int layer, IlUInt &count, const IlvRect &rect, const IlvTransformer *t=0) const
	Returns all graphic objects of a layer located in a rectangle. More...
IlUInt	getCardinal (int layer) const
	Returns the number of graphic objects in a layer. More...
virtual void	contentsChanged ()
	Called automatically by the manager each time objects are created, removed, moved, or resized in the manager. More...
void	setCleanFunction (IlvApplyObject func)
	Sets a function to be called when an object is removed from the manager. More...
void	computeBBox (IlvRect &bbox, const IlvTransformer *t=0) const
	Computes the bounding box of all the objects stored in all the visible layers. More...
void	computeBBox (IlvRect &bbox, const IlvView *view) const
	Computes the bounding box of all the objects. More...
IlvManagerGrid *	getGrid (const IlvView *view) const
	Returns the manager grid associated with a manager view. More...
void	setGrid (IlvView *const view, IlvManagerGrid *grid)
	Sets a manager grid on a manager view. More...
void	snapToGrid (const IlvView *view, IlvPoint &p) const
	Moves a given point to the closest grid point on a manager view. More...
IlBoolean	transformThroughGrid (const IlvView *view, IlvPoint &p) const
	Transforms and moves a given point on a manager view to the closest grid point in the manager coordinate system. More...
virtual IlvManagerInputFile *	createInputFile (std::istream &stream)
	Creates an IlvManagerInputFile from an input stream. More...
virtual IlvManagerOutputFile *	createOutputFile (std::ostream &stream) const
	Creates an IlvManagerOutputFile from an output stream. More...
virtual void	save (std::ostream &stream) const
	Saves all the graphic objects in an output stream. More...
virtual void	read (std::istream &stream)
	Reads a set of graphic objects from the specified input stream. More...
virtual void	read (const char *filename)
	Loads a Rogue Wave Views data file. More...
IlBoolean	installEventHook (const IlvManagerEventHook *hook)
	Installs an event hook on the manager. More...
IlvManagerEventHook *	removeEventHook (const IlvManagerEventHook *hook)
	Removes and returns an event hook installed on the manager. More...
virtual IlBoolean	shortCut (IlvEvent &event, IlvView *view)
	Dispatches an incoming event to manager accelerators. More...
void	addAccelerator (IlvManagerAcceleratorAction f, IlvEventType type, IlUShort buttonOrKey=0, IlUShort modifiers=0, IlAny userArg=0, IlUShort optModifiers=0)
	Adds an accelerator to the manager. More...
void	removeAccelerator (IlvEventType type, IlUShort buttonOrKey=0, IlUShort modifiers=0)
	Removes the accelerator matching the event description. More...
IlBoolean	getAccelerator (IlvManagerAcceleratorAction *f, IlAny *userArg, IlvEventType type, IlUShort buttonOrKey=0, IlUShort modifiers=0)
	Gets an accelerator action matching an event description. More...
void	removeAccelerators ()
	Removes all accelerators. More...
IlBoolean	setDoubleBuffering (const IlvView *view, IlBoolean useDblBuffering)
	Enables or disables double buffering for a manager view. More...
IlBoolean	isDoubleBuffering (const IlvView *view) const
	Indicates whether double buffering is used for a manager view. More...
IlBoolean	isVisible (int layer) const
	Indicates whether a layer is considered visible by the manager. More...
void	setVisible (int layer, IlBoolean visible)
	Sets the visibility of a layer for the manager. More...
IlBoolean	isVisible (const IlvView *view, int layer) const
	Indicates the visibility of a layer in a manager view. More...
void	setVisible (const IlvView *view, int layer, IlBoolean visible)
	Sets the visibility of a layer for a manager view. More...
IlBoolean	isSelectable (int layer) const
	Indicates if a manager layer allows the selection of its graphic objects. More...
void	setSelectable (int layer, IlBoolean selectable)
	Enables or disables the selection of graphic objects in a manager layer. More...
virtual void	pop (IlvGraphic *object, IlBoolean redraw=IlTrue)
	Moves a graphic object higher in the drawing stacking order. More...
virtual void	push (IlvGraphic *object, IlBoolean redraw=IlTrue)
	Moves a graphic object lower in the drawing stacking order. More...
IlvManagerLayer *	getManagerLayer (const IlvGraphic *object) const
	Returns the IlvManagerLayer instance of a graphic object. More...
int	getLayer (const IlvGraphic *object) const
	Returns the manager layer containing a given graphic object. More...
void	setLayer (IlvGraphic *object, int layer, IlBoolean redraw=IlTrue)
	Moves a graphic object to a given manager layer. More...
int	getNumLayers () const
	Returns the number of manager layers. More...
void	setNumLayers (int numLayers)
	Sets the number of manager layers. More...
void	swapLayers (int layer1, int layer2, IlBoolean redraw=IlTrue)
	Swaps the contents of two manager layers. More...
void	addLayer (int position=-1, IlUShort maxInList=IlvMaxObjectsInList, IlUShort maxInNode=IlvMaxObjectsInList)
	Adds a layer to the manager. More...
void	removeLayer (int layer=-1)
	Removes a layer from the manager. More...
int	addLayer (IlvManagerLayer *layer, int position=-1)
	Adds a layer to the manager. More...
IlvManagerLayer *	getManagerLayer (int index) const
	Returns the IlvManagerLayer instance from its index. More...
int	getLayerIndex (const IlvManagerLayer *layer) const
	Returns the index of a manager layer instance. More...
IlvMakeSelection	setMakeSelection (IlvMakeSelection func)
	Sets the function that creates a selection object for a graphic object. More...
IlBoolean	installSelectionHook (const IlvManagerSelectionHook *hook)
	Sets a selection hook on the manager. More...
IlvManagerSelectionHook *	removeSelectionHook (const IlvManagerSelectionHook *hook)
	Removes the selection hook from the manager, if it is installed. More...
void	applyToSelections (IlvApplyObject func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to the selected graphic objects. More...
IlUInt	numberOfSelections () const
	Returns the number of selected graphic objects. More...
virtual void	deSelectAll (IlBoolean redraw=IlTrue)
	Deselects the selected graphic objects. More...
virtual void	selectAll (IlBoolean redraw=IlTrue)
	Selects all the objects of the manager. More...
IlvGraphic *const *	getSelections (IlUInt &count) const
	Returns the selected graphic objects. More...
IlvDrawSelection *	getSelection (const IlvGraphic *object) const
	Returns the selection object of a graphic object. More...
IlvGraphic *const *	sortObjects (IlvGraphic *const *objs, IlUInt count) const
	Sorts a set of object. More...
IlBoolean	isSelected (const IlvGraphic *obj) const
	Indicates if a graphic object is selected. More...
virtual void	duplicate (IlvPos dx=0, IlvPos dy=0)
	Duplicates the selected graphic objects. More...
virtual void	deleteSelections (IlBoolean redraw=IlTrue)
	Removes the selected objects from the manager and deletes them if undo is disabled. More...
IlvSmartSet *	getSmartSet (const char *name) const
	Gets a smartset by its name. More...
virtual IlBoolean	addSmartSet (IlvSmartSet *set, IlBoolean redraw=IlTrue)
	Adds a smartset to the manager. More...
virtual IlBoolean	removeSmartSet (IlvSmartSet *set)
	Removes a smartset from the manager. More...
virtual IlvSmartSet *	duplicateSmartSet (IlvSmartSet *set, IlvPos dx=0, IlvPos dy=0)
	Makes a copy of a smartset. More...
IlBoolean	isUndoEnabled () const
	Indicates whether the manager lets you undo commands. More...
void	setUndoEnabled (IlBoolean enable)
	Enables or disables the possibility of undoing commands in the manager. More...
void	forgetUndo ()
	Resets the undo command queue. More...
virtual void	repeat ()
	Executes again the last command.
virtual void	reDo (IlBoolean unused)
	Executes again the last canceled command. More...
virtual void	unDo ()
	Cancels the most recent command, leaving manager objects as they were before the previous command was applied.
virtual void	addCommand (IlvCommand *command)
	Appends a new command to the command queue. More...
IlvCommandHistory *	getCommandHistory () const
	Returns the object which handles the stack of commands. More...
void	installViewHook (const IlvManagerViewHook *hook)
	Adds a view hook to the manager. More...
void	removeViewHook (const IlvManagerViewHook *hook)
	Removes a view hook from the manager. More...
IlvManagerViewHook *const *	getViewHooks (const IlvView *view, IlUInt &count) const
	Gets the view hooks of a manager view. More...
virtual void	translateObject (IlvGraphic *object, IlvPos dx, IlvPos dy, IlBoolean redraw=IlTrue)
	Translates a graphic object. More...
void	moveObject (IlvGraphic *object, IlvPos x, IlvPos y, IlBoolean redraw=IlTrue)
	Moves a graphic object. More...
virtual void	reshapeObject (IlvGraphic *object, const IlvRect &bbox, IlBoolean redraw=IlTrue)
	Resizes a graphic object to fit in a rectangle. More...
virtual void	align (IlvPosition alignment, IlBoolean redraw=IlTrue)
	Aligns the selected objects. More...
virtual void	makeColumn (IlvDim spacing=0, IlBoolean redraw=IlTrue)
	Arranges the selected graphic objects in a column. More...
virtual void	makeRow (IlvDim spacing=0, IlBoolean redraw=IlTrue)
	Arranges the selected graphic objects in a row. More...
virtual void	sameWidth (IlBoolean redraw=IlTrue)
	Resizes the selected graphic objects to the same width. More...
virtual void	sameHeight (IlBoolean redraw=IlTrue)
	Resizes the selected graphic objects to the same height. More...
IlvPalette *	getCreatorPalette () const
	Gets the default palette used to create graphic objects interactively. More...
void	setCreatorPalette (IlvPalette *palette)
	Sets the default palette used to create new graphic objects interactively. More...
int	getInsertionLayer () const
	Gets the default layer used to store the graphic objects created interactively. More...
void	setInsertionLayer (int layer=-1)
	Sets the layer where new objects created interactively using the predefined interactors will be stored. More...
void	initReDraws ()
	Initializes the manager so that calls to IlvManager::invalidateRegion() can begin. More...
void	invalidateRegion (const IlvGraphic *object)
	Invalidates the bounding box of a graphic object. More...
void	invalidateRegion (const IlvRect &rect)
	Invalidates a rectangle. More...
void	invalidateRegion (const IlvView *view, const IlvRect &rect)
	Invalidates a rectangle in a manager view. More...
void	invalidateRegion (const IlvRegionUpdater &updater, const IlvGraphic *g=0)
	Updates the invalidated region. More...
void	reDrawViews (IlBoolean erase=IlTrue)
	Draws the invalidated regions. More...
void	abortReDraws ()
	Resets the invalidated regions. More...
virtual void	flushRedraw ()
	Performs the actual redraw of invalid regions. More...
void	disableRedrawTask ()
	Deactivates the lazy redraw mechanism. More...
IlvReDrawMode	getReDrawMode () const
	Returns the redraw mode of the manager. More...
void	setReDrawMode (IlvReDrawMode reDrawMode)
	Sets the redraw mode of the manager. More...
IlBoolean	isInvalidating () const
	Indicates whether the manager is in a phase of invalidating regions. More...
IlvGraphic *const *	getTaggedObjects (const IlSymbol *tag, IlUInt &count) const
	Returns the graphic objects associated with a given tag. More...
void	setTaggedObjectsSelected (const IlSymbol *tag, IlBoolean selected=IlTrue, IlBoolean redraw=IlTrue)
	Selects or deselects the graphic objects associated with a given tag. More...
void	removeTaggedObjects (const IlSymbol *tag, IlBoolean redraw=IlTrue)
	Removes graphic objects associated with a given tag. More...
void	applyToTaggedObjects (const IlSymbol *tag, IlvApplyObject func, IlAny arg, IlBoolean redraw=IlTrue)
	Applies a user function to all graphic objects associated with a given tag. More...
IlvView **	getViews (IlUInt &count) const
	Returns the array of views associated with the manager. More...
IlvView *	getFirstView () const
	Returns the first view associated with the manager. More...
IlvTransformer *	getTransformer (const IlvView *view) const
	Returns the transformer associated with a manager view. More...
virtual void	setTransformer (const IlvView *view, IlvTransformer *t=0)
	Sets a transformer to a manager view. More...
virtual void	addTransformer (const IlvView *view, IlvTransformer *t=0)
	Composes a manager view transformer with another transformer. More...
void	translateView (const IlvView *view, IlvPos dx, IlvPos dy, IlBoolean redraw=IlTrue)
	Scroll the contents of a manager. More...
void	zoomView (const IlvView *view, const IlvPoint &point, IlFloat scalex, IlFloat scaley, IlBoolean redraw=IlTrue)
	Zoom the contents of a manager view. More...
void	rotateView (const IlvView *view, const IlvPoint &point, IlFloat angle, IlBoolean redraw=IlTrue)
	Rotates the contents of a manager view. More...
void	fitTransformerToContents (const IlvView *view, IlBoolean redraw=IlTrue, IlBoolean ratio=IlFalse)
	Rescales the contents of a manager view to fit in the view. More...
void	fitToContents (IlvView *view)
	Resizes a manager view to fit the bounding box of the graphic objects. More...
IlBoolean	isKeepingAspectRatio (const IlvView *view) const
	Indicates whether a manager view preserves the x/y ratio. More...
void	setKeepingAspectRatio (const IlvView *view, IlBoolean ratio=IlTrue, IlBoolean redraw=IlTrue) const
	Sets or unsets the automatic preservation of the x/y ratio in a manager view. More...
void	ensureVisible (IlvView *view, const IlvPoint &point)
	Translates the contents of a manager view in order to make a given location visible. More...
void	ensureVisible (IlvView *view, const IlvRect &rect)
	Translates the contents of a manager view in order to make a given rectangle visible. More...
virtual IlBoolean	removeObject (IlvGraphic *object, IlBoolean redraw=IlTrue, IlBoolean destroyIt=IlTrue)
	Removes a graphic object from the manager set. More...
IlvDrawSelection *	whichSelection (const IlvPoint &p, const IlvView *view) const
	Returns the selection object located at the given location. More...
IlBoolean	isVisible (const IlvGraphic *object) const
	Indicates whether a graphic object is visible. More...
IlBoolean	isVisible (const IlvGraphic *graphic, IlvView *view) const
	Indicates whether a graphic object is visible in a manager view. More...
void	setVisible (IlvGraphic *object, IlBoolean visible, IlBoolean redraw=IlFalse)
	Sets the visibility of a graphic object in the manager to visible. More...
const char *	getObjectName (const IlvGraphic *object) const
	Returns the name of a graphic object. More...
virtual IlBoolean	setObjectName (IlvGraphic *object, const char *name)
	Sets the name of a graphic object in the manager. More...
IlvGraphic *	getObject (const char *name) const
	Gets a graphic object by its name. More...
virtual IlBoolean	isSelectable (const IlvGraphic *obj) const
	Indicates if a graphic object can be selected. More...
virtual void	setSelectable (IlvGraphic *object, IlBoolean selectable)
	Sets a graphic object as selectable or not selectable. More...
IlBoolean	isMoveable (const IlvGraphic *object) const
	Indicates if a graphic object can be moved. More...
void	setMoveable (IlvGraphic *object, IlBoolean moveable)
	Sets the moveability of a graphic object. More...
IlBoolean	isResizeable (const IlvGraphic *object) const
	Indicates if a graphic object can be resized. More...
void	setResizeable (IlvGraphic *object, IlBoolean resizable)
	Sets a graphic object as resizable or not resizable. More...
IlBoolean	isEditable (const IlvGraphic *object) const
	Indicates whether a graphic object can be edited. More...
void	setEditable (IlvGraphic *object, IlBoolean editable)
	Indicates whether a graphic object can be edited. More...
IlBoolean	isManaged (const IlvGraphic *object) const
	Indicates whether a graphic object is stored by the manager. More...
IlBoolean	isASelection (const IlvGraphic *object) const
	Indicates if a graphic object is a selection object. More...
virtual void	deleteAll (IlBoolean destroy, IlBoolean redraw)
	Removes all the graphic objects from the manager. More...
virtual void	deleteAll (int layer, IlBoolean destroy, IlBoolean redraw)
	Removes all the objects stored in a specified layer of the manager. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvManager
static IlvManager *	Get (const IlvView *view)
	Returns the manager connected to the specified view, if any. More...
static IlvManager *	getManager (const IlvGraphic *object)
	Gets the manager holding a given graphic object. More...

Detailed Description

Gadget class.

Library: ilvgadmgr

The IlvGadgetManager class creates a manager that is specifically designed to handle gadgets. It has special member functions handling the input focus and the grabbing of an object (so that the object interactor attached to the grabbing object receives every event). This class also manages the attachments of objects to the view in which they are located. The input focus determines which gadget must receive keyboard events when a view gets the focus. The IlvGadgetManager has a keyboard navigation mechanism allowing the end user to give the input focus to any gadget by cycling through the list of objects using the Tab key (and sometimes the arrow keys). The IlvGadgetManager must decide which gadget will be the next to get the input focus at each step of keyboard navigation; the default algorithm is based on the geometry of the gadgets (from left to right and from top to bottom). The programmer can force the use of a given order in keyboard navigation, that is, define its own focus chain.

See Also

IlvGraphic ("Gadget Properties" and "Focus Chain Management" member functions).

Constructor & Destructor Documentation

IlvGadgetManager::IlvGadgetManager	(	IlvDisplay *	display,
		int	layers = 2,
		IlBoolean	useacc = IlTrue,
		IlUShort	maxInList = IlvMaxObjectsInList,
		IlUShort	maxInNode = IlvMaxObjectsInList
	)

Constructor.

Initializes a new instance of the IlvGadgetManager class, with the same initialization parameters as those described for the IlvManager class.

Member Function Documentation

virtual void IlvGadgetManager::addObject ( IlvGraphic *  object, IlBoolean  redraw = IlTrue, int  layer = -1  )

virtual

Adds an object to the manager.

If an object is inserted in a non-existent layer, the layer, as well as any intermediate ones, are automatically created. For example, by default, a manager is created with three layers (0, 1 and 2); the code

addObject(obj, IlTrue, 5);

creates layers 3, 4, and 5.

An object cannot be added to a manager more than once.

Parameters

object	The graphic object.
redraw	Indicates whether the manager must immediately display the object.
layer	Specifies the layer index where the object must be inserted. The default value -1 indicates that the object is stored in the last (topmost) layer.

Note

You can accelerate the process of storing and removing objects to and from the manager. When you call IlvManager::addObject() or IlvManager::removeObject(), tests ensure that the data structure remains consistent. These tests ensure that an object is not stored twice, or remove an object that is not stored in this manager. You can bypass these tests and accelerate the process of storing and removing objects in a manager. See the global functions IlvGetOptimizeMode() and IlvSetOptimizeMode().

Reimplemented from IlvManager.

virtual void IlvGadgetManager::addObject ( const char *  name, IlvGraphic *  object, IlBoolean  redraw = IlTrue, int  layer = -1  )

virtual

Adds a graphic object to a manager, and then names the object.

This function is equivalent to

addObject(object, redraw, layer);
setObjectName(object, name);

If the object has a name that is already in use in the manager, the name is removed from the object. For more information, see the description of the IlvManager::addObject() member function.

Parameters

name	Specifies the name to set on the object.
object	The graphic object.
redraw	Indicates whether the manager must immediately display the object.
layer	Specifies the layer index where the object must be inserted. The default value -1 indicates that the object is stored in the last (topmost) layer.

Note

See "Note" under the first IlvManager::addObject() member function.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::addView ( IlvView *  view )

virtual

Adds a view to the manager.

Attaches a new view to the manager. All events are then handled by the hierarchy of interactors located in the manager.

Parameters

view

The view.

Reimplemented from IlvManager.

virtual IlBoolean IlvGadgetManager::allowFocus ( IlBoolean  flag )

virtual

Enable or disables keyboard focus handling.

Parameters

flag	IlTrue to enable keyboard focus handling and IlFalse to disable it.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::applyResize ( IlvView *  view, IlFloat  sx, IlFloat  sy, IlBoolean  redraw = IlTrue  )

virtual

Resolves attachment constraints when the view is resized.

Applies geometric rules to satisfy all constraint attachments when the specified view is scaled by the specified factors. If this manager is not in autoResize mode, this member function does nothing (see the member function autoResize()).

Parameters

view	The manager view.
sx	Horizontal scaling factor.
sy	Vertical scaling factor.
redraw	Specifies whether to redraw the view contents.

void IlvGadgetManager::applyResize	(	IlvView *	view,
		IlBoolean	redraw = IlTrue
	)

Resolves attachment constraints when the view is resized.

Recomputes the positions of all objects depending on their relative attachments. It corresponds to a call to the first member function applyResize(), where the scaling factors are set.

Parameters

view	The manager view.
redraw	Specifies whether to redraw the view contents.

virtual void IlvGadgetManager::applyResize ( IlvView *  view, IlvGraphic *  g, IlFloat  sx, IlFloat  sy, IlBoolean  redraw = IlTrue  )

virtual

Resolves attachment constraints for an object when the view is resized.

Does the same as the first applyResize() member function for the particular graphic object.

Parameters

view	The manager view.
g	The graphic object.
sx	Horizontal scaling factor.
sy	Vertical scaling factor.
redraw	Specifies whether to redraw the view contents.

void IlvGadgetManager::applyResize	(	IlvView *	view,
		IlvGraphic *	g,
		IlBoolean	redraw = IlTrue
	)

Resolves attachment constraints for an object when the view is resized.

Recomputes the position of a graphic object depending on its attachments settings. It corresponds to a call to the second member function applyResize(), where the scaling factors are set.

Parameters

view	The manager view.
g	The graphic object.
redraw	Specifies whether to redraw the view contents.

IlBoolean IlvGadgetManager::autoResize

(

IlBoolean

a

)

Sets the auto resizing mechanism.

Sets or unsets the mechanism for managing attachments.

Parameters

a	IlTrue to enable auto resizing and IlFalse to disable it.

virtual IlBoolean IlvGadgetManager::dispatchToObjects ( IlvEvent &  , IlvView *    )

virtual

Dispatches an event to the appropriate graphic objects.

Called by the manager event handler for every incoming user event when no view interactor was set in the view where the event occurred. It checks whether there is an object under the cursor. If there is one and if it is associated with an interactor, the event handler propagates the event to the interactor.

Returns

IlTrue if the object interactor handled the event. If there is no object under the pointer or if its object interactor cannot handle the event, the returned value is IlFalse.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::drawFocus ( IlvPort *  dst, const IlvTransformer *  t = 0, const IlvRegion *  clip = 0  ) const

virtual

Draws the representation of the keyboard focus.

Draws the graphic representation of the keyboard focus on the focus object.

Parameters

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

Reimplemented from IlvManager.

virtual IlvGraphic* IlvGadgetManager::getFirstFocusGraphic ( ) const

virtual

Returns the first graphic object in the focus chain.

Returns

The first object that receives the keyboard focus.

virtual IlvGraphic* IlvGadgetManager::getFocus ( ) const

virtual

Returns the graphic object with the keyboard focus.

Returns

The current object that has the keyboard focus in this manager, or 0 if there is none.

Reimplemented from IlvManager.

virtual IlvGraphic* IlvGadgetManager::getGrab ( ) const

virtual

Returns the grabbing graphic object.

Returns

The current object that is currently grabbing in this manager. It returns 0 if there is no grabbing object in this manager.

Reimplemented from IlvManager.

virtual IlvGraphic* IlvGadgetManager::getLastFocusGraphic ( ) const

virtual

Returns the last graphic object in the focus chain.

Returns

The last object that receives the keyboard focus.

Note

getFirstFocusGraphic() and getLastFocusGraphic() are only used by getNextFocusGraphic() and getPreviousFocusGraphic() to make the focus chain circular. These four member functions implement the linking of objects using their names. Redefining them would break this mechanism.

IlvLookFeelHandler* IlvGadgetManager::getLookFeelHandler

(

)

const

Returns the look and feel handler associated with this gadget manager.

Returns

The look and feel handler associated with this gadget manager.

virtual IlvGraphic* IlvGadgetManager::getNextFocusGraphic ( IlvGraphic *  object ) const

virtual

Returns the next graphic object in the focus chain.

The default focus chain orders the objects according to their position, from left to right and from top to bottom. The method looks for an object that would fulfill the following conditions:

• must be visible (method IlvManager::isVisible())
• must be sensitive (method IlvGraphic::isSensitive())
• must have an interactor (or be active and focusable in case of a gadget)

The search is performed down the focus chain, starting after object.

Parameters

object

The graphic object.

Returns

The next graphic object that must receive the keyboard focus after object. It returns getFirstFocusGraphic() when object is 0. If no valid object is found, the method returns 0.

virtual IlvGraphic* IlvGadgetManager::getPreviousFocusGraphic ( IlvGraphic *  object ) const

virtual

Returns the previous graphic object in the focus chain.

Parameters

object

The graphic object.

Returns

The previous object that must receive the focus before object. It returns getLastFocusGraphic() when object is 0.
The method is similar to getNextFocusGraphic(), except that the search is performed up the focus chain, starting before object.

IlBoolean IlvGadgetManager::isAutoResizing

(

)

const

Indicates whether the auto resizing mechanism is enabled.

Returns

IlTrue if this gadget manager allows the automatic resizing of the objects it stores, depending on their relative graphic attachments. It returns IlFalse if this manager does not handle the attachments.

virtual IlBoolean IlvGadgetManager::isFocusAllowed ( ) const

virtual

Indicates if keyboard focus handling is enabled.

Returns

IlTrue if this gadget manager allows the manipulation of the keyboard focus on the objects it stores. Otherwise it returns IlFalse.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::moveFocusAfter ( IlBoolean  redraw = IlTrue )

virtual

Moves the keyboard focus to the next graphic object in the focus chain.

Calls getNextFocusGraphic() with the object that currently has the focus to get the next valid object in the focus chain, and then calls setFocus on it. If getNextFocusGraphic returns 0, the result of getFirstFocusGraphic is used instead.

Parameters

redraw

Specifies whether to redraw the graphic objects.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::moveFocusBefore ( IlBoolean  redraw = IlTrue )

virtual

Moves the keyboard focus to the previous graphic object in the focus chain.

Calls getPreviousFocusGraphic() with the object that currently has the focus to get the previous valid object in the focus chain, and then calls setFocus() on it. If getPreviousFocusGraphic() returns 0, the result of getLastFocusGraphic() is used instead.

Parameters

redraw

Specifies whether to redraw the graphic objects.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::removeGrab ( )

virtual

Removes any grab that has been set in this manager.

Reimplemented from IlvManager.

virtual IlBoolean IlvGadgetManager::removeView ( IlvView *  view )

virtual

Removes a view from the manager view list.

The view is no longer handled by the manager.

Parameters

view	The manager view.

Returns

IlTrue on success, and IlFalse on error (the view could not be detached).

Reimplemented from IlvManager.

virtual void IlvGadgetManager::setBackground ( IlvView *  view, IlvColor *  color, IlvBitmap *  bitmap = 0  )

virtual

Sets the background of a manager view.

Sets the color used to erase the double buffering bitmap for the view. When the view is set to double buffering mode, the color is initially updated to the background color of the view. If you change the view background color and want to set the double buffering color accordingly, call this member function with this color. If a bitmap is specified, it will be used as the background for the view; this means that it will not remain as a single image but will be tiled to the size of the manager view. To remove properly a background bitmap that was previously set, you must do the following:

view->setBackgroundBitmap(0); // Remove the background bitmap
manager->setBackground(view, view->getBackground()); // Update the manager
manager->draw(view, IlTrue); // Redraw the view

Parameters

view	The manager view.
color	The background color.
bitmap	The background bitmap.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::setFocus ( IlvGraphic *  graphic = 0, IlBoolean  redraw = IlTrue  )

virtual

Sets the keyboard focus on a graphic object.

If the manager has disallowed the keyboard focus mechanism, this method has no effect.

Parameters

graphic	The graphic object.
redraw	Specifies whether to redraw the graphic object.

Reimplemented from IlvManager.

virtual void IlvGadgetManager::setGrab ( IlvGraphic *  object )

virtual

Sets a graphic object to grab events.

Sets the grab on the specified graphic object; every event is sent to this object. If this object has no object interactor, the events are lost.

Parameters

object

The graphic object.

Reimplemented from IlvManager.

void IlvGadgetManager::setLookFeelHandler

(

IlvLookFeelHandler *

lfh

)

Sets the look and feel handler of this gadget manager.

Parameters

lfh	The new look and feel handler.

virtual void IlvGadgetManager::setSelected ( IlvGraphic *  object, IlBoolean  selected = IlTrue, IlBoolean  redraw = IlTrue  )

virtual

Selects or deselects a graphic object.

Selects or deselects an object in the manager.

Parameters

object	The graphic object.
selected	IlTrue if the graphic object must be selected, IlFalse otherwise.
redraw	Specifies whether the manager must redraw the invalidate region occupied by the selection object.

Reimplemented from IlvManager.