DisplayObject Class
DisplayObject is an abstract class that should not be constructed directly. Instead construct subclasses such as Container, Bitmap, and Shape. DisplayObject is the base class for all display classes in the EaselJS library. It defines the core properties and methods that are shared between all display objects, such as transformation properties (x, y, scaleX, scaleY, etc), caching, and mouse handlers.
Constructor
DisplayObject
()
Item Index
Methods
- _applyFilters
- _applyShadow
- _cloneProps
- _dispatchEvent
- _getBounds
- _getFilterBounds
- _isMouseOpaque
- _testHit
- _tick
- _transformBounds
- addEventListener
- cache
- clone
- dispatchEvent
- draw
- getBounds
- getCacheDataURL
- getConcatenatedDisplayProps
- getConcatenatedMatrix
- getMatrix
- getStage deprecated
- getTransformedBounds
- globalToLocal
- hasEventListener
- hitTest
- initialize deprecated
- isVisible
- localToGlobal
- localToLocal
- off
- on
- removeAllEventListeners
- removeEventListener
- set
- setBounds
- setTransform
- toString
- uncache
- updateCache
- updateContext
- willTrigger
Properties
- _bounds
- _cacheDataURL
- _cacheDataURLID
- _cacheOffsetX
- _cacheOffsetY
- _cacheScale
- _captureListeners
- _filterOffsetX
- _filterOffsetY
- _hitTestCanvas static
- _hitTestContext static
- _listeners
- _MOUSE_EVENTS static
- _nextCacheID static
- _props
- _rectangle
- _snapToPixelEnabled static
- alpha
- cacheCanvas
- cacheID
- compositeOperation
- cursor
- filters
- hitArea
- id
- mask
- mouseEnabled
- name
- parent
- regX
- regY
- rotation
- scaleX
- scaleY
- shadow
- skewX
- skewY
- snapToPixel
- stage
- suppressCrossDomainErrors static
- tickEnabled
- transformMatrix
- visible
- x
- y
Methods
_applyFilters
()
protected
_cloneProps
-
o
Parameters:
-
oDisplayObjectThe DisplayObject instance which will have properties from the current DisplayObject instance copied into.
Returns:
_dispatchEvent
-
eventObj -
eventPhase
_isMouseOpaque
()
Boolean
protected
Indicates whether the display object has any mouse event listeners or a cursor.
Returns:
_tick
-
evtObj
Parameters:
-
evtObjObjectAn event object that will be dispatched to all tick listeners. This object is reused between dispatchers to reduce construction & GC costs.
addEventListener
-
type -
listener -
[useCapture]
Adds the specified event listener. Note that adding multiple listeners to the same function will result in multiple callbacks getting fired.
Example
displayObject.addEventListener("click", handleClick);
function handleClick(event) {
// Click happened.
}Parameters:
-
typeStringThe string type of the event.
-
listenerFunction | ObjectAn object with a handleEvent method, or a function that will be called when the event is dispatched.
-
[useCapture]Boolean optionalFor events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.
cache
-
x -
y -
width -
height -
[scale=1]
Draws the display object into a new canvas, which is then used for subsequent draws. For complex content
that does not change frequently (ex. a Container with many children that do not move, or a complex vector Shape),
this can provide for much faster rendering because the content does not need to be re-rendered each tick. The
cached display object can be moved, rotated, faded, etc freely, however if its content changes, you must
manually update the cache by calling updateCache() or cache() again. You must specify
the cache area via the x, y, w, and h parameters. This defines the rectangle that will be rendered and cached
using this display object's coordinates.
Example
For example if you defined a Shape that drew a circle at 0, 0 with a radius of 25: var shape = new createjs.Shape();
shape.graphics.beginFill("#ff0000").drawCircle(0, 0, 25);
myShape.cache(-25, -25, 50, 50);Note that filters need to be defined before the cache is applied. Check out the Filter class for more information. Some filters (ex. BlurFilter) will not work as expected in conjunction with the scale param.
Usually, the resulting cacheCanvas will have the dimensions widthscale by heightscale, however some filters (ex. BlurFilter) will add padding to the canvas dimensions.
Parameters:
-
xNumberThe x coordinate origin for the cache region.
-
yNumberThe y coordinate origin for the cache region.
-
widthNumberThe width of the cache region.
-
heightNumberThe height of the cache region.
-
[scale=1]Number optionalThe scale at which the cache will be created. For example, if you cache a vector shape using myShape.cache(0,0,100,100,2) then the resulting cacheCanvas will be 200x200 px. This lets you scale and rotate cached elements with greater fidelity. Default is 1.
clone
()
DisplayObject
Returns a clone of this DisplayObject. Some properties that are specific to this instance's current context are reverted to their defaults (for example .parent). Caches are not maintained across clones, and some elements are copied by reference (masks, individual filter instances, hit area)
Returns:
A clone of the current DisplayObject instance.
dispatchEvent
-
eventObj -
[bubbles] -
[cancelable]
Dispatches the specified event to all listeners.
Example
// Use a string event
this.dispatchEvent("complete");
// Use an Event instance
var event = new createjs.Event("progress");
this.dispatchEvent(event);Parameters:
-
eventObjObject | String | EventAn object with a "type" property, or a string type. While a generic object will work, it is recommended to use a CreateJS Event instance. If a string is used, dispatchEvent will construct an Event instance if necessary with the specified type. This latter approach can be used to avoid event object instantiation for non-bubbling events that may not have any listeners.
-
[bubbles]Boolean optionalSpecifies the
bubblesvalue when a string was passed to eventObj. -
[cancelable]Boolean optionalSpecifies the
cancelablevalue when a string was passed to eventObj.
Returns:
Returns false if preventDefault() was called on a cancelable event, true otherwise.
draw
-
ctx -
[ignoreCache=false]
Draws the display object into the specified context ignoring its visible, alpha, shadow, and transform.
Returns true if the draw was handled (useful for overriding functionality).
NOTE: This method is mainly for internal use, though it may be useful for advanced uses.
Parameters:
-
ctxCanvasRenderingContext2DThe canvas 2D context object to draw into.
-
[ignoreCache=false]Boolean optionalIndicates whether the draw operation should ignore any current cache. For example, used for drawing the cache (to prevent it from simply drawing an existing cache back into itself).
Returns:
getBounds
()
Rectangle
Returns a rectangle representing this object's bounds in its local coordinate system (ie. with no transformation). Objects that have been cached will return the bounds of the cache.
Not all display objects can calculate their own bounds (ex. Shape). For these objects, you can use setBounds so that they are included when calculating Container bounds.
| All | All display objects support setting bounds manually using setBounds(). Likewise, display objects that have been cached using cache() will return the bounds of their cache. Manual and cache bounds will override the automatic calculations listed below. |
| Bitmap | Returns the width and height of the sourceRect (if specified) or image, extending from (x=0,y=0). |
| Sprite | Returns the bounds of the current frame. May have non-zero x/y if a frame registration point was specified in the spritesheet data. See also getFrameBounds |
| Container | Returns the aggregate (combined) bounds of all children that return a non-null value from getBounds(). |
| Shape | Does not currently support automatic bounds calculations. Use setBounds() to manually define bounds. |
| Text | Returns approximate bounds. Horizontal values (x/width) are quite accurate, but vertical values (y/height) are not, especially when using textBaseline values other than "top". |
| BitmapText | Returns approximate bounds. Values will be more accurate if spritesheet frame registration points are close to (x=0,y=0). |
Bounds can be expensive to calculate for some objects (ex. text, or containers with many children), and are recalculated each time you call getBounds(). You can prevent recalculation on static objects by setting the bounds explicitly:
var bounds = obj.getBounds();
obj.setBounds(bounds.x, bounds.y, bounds.width, bounds.height);
// getBounds will now use the set values, instead of recalculatingTo reduce memory impact, the returned Rectangle instance may be reused internally; clone the instance or copy its values if you need to retain it.
var myBounds = obj.getBounds().clone();
// OR:
myRect.copy(obj.getBounds());Returns:
A Rectangle instance representing the bounds, or null if bounds are not available for this object.
getCacheDataURL
()
String
Returns a data URL for the cache, or null if this display object is not cached. Uses cacheID to ensure a new data URL is not generated if the cache has not changed.
Returns:
The image data url for the cache.
getConcatenatedDisplayProps
-
[props]
Generates a DisplayProps object representing the combined display properties of the object and all of its parent Containers up to the highest level ancestor (usually the Stage).
Parameters:
-
[props]DisplayProps optionalA DisplayProps object to populate with the calculated values. If null, a new DisplayProps object is returned.
Returns:
The combined display properties.
getConcatenatedMatrix
-
[matrix]
Generates a Matrix2D object representing the combined transform of the display object and all of its parent Containers up to the highest level ancestor (usually the Stage). This can be used to transform positions between coordinate spaces, such as with localToGlobal and globalToLocal.
Parameters:
Returns:
The combined matrix.
getMatrix
-
matrix
Returns a matrix based on this object's current transform.
Parameters:
-
matrixMatrix2DOptional. A Matrix2D object to populate with the calculated values. If null, a new Matrix object is returned.
Returns:
A matrix representing this display object's transform.
getTransformedBounds
()
Rectangle
Returns a rectangle representing this object's bounds in its parent's coordinate system (ie. with transformations applied). Objects that have been cached will return the transformed bounds of the cache.
Not all display objects can calculate their own bounds (ex. Shape). For these objects, you can use setBounds so that they are included when calculating Container bounds.
To reduce memory impact, the returned Rectangle instance may be reused internally; clone the instance or copy its values if you need to retain it.
Container instances calculate aggregate bounds for all children that return bounds via getBounds.
Returns:
A Rectangle instance representing the bounds, or null if bounds are not available for this object.
globalToLocal
-
x -
y -
[pt]
Transforms the specified x and y position from the global (stage) coordinate space to the coordinate space of the display object. For example, this could be used to determine the current mouse position within the display object. Returns a Point instance with x and y properties correlating to the transformed position in the display object's coordinate space.
Example
displayObject.x = 300;
displayObject.y = 200;
stage.addChild(displayObject);
var point = displayObject.globalToLocal(100, 100);
// Results in x=-200, y=-100Parameters:
Returns:
A Point instance with x and y properties correlating to the transformed position in the display object's coordinate space.
hasEventListener
-
type
Indicates whether there is at least one listener for the specified event type.
Parameters:
-
typeStringThe string type of the event.
Returns:
Returns true if there is at least one listener for the specified event.
hitTest
-
x -
y
Tests whether the display object intersects the specified point in local coordinates (ie. draws a pixel with alpha > 0 at the specified position). This ignores the alpha, shadow, hitArea, mask, and compositeOperation of the display object.
Example
var myShape = new createjs.Shape();
myShape.graphics.beginFill("red").drawRect(100, 100, 20, 50);
console.log(myShape.hitTest(10,10); // false
console.log(myShape.hitTest(110, 25); // trueNote that to use Stage coordinates (such as mouseX), they must first be converted to local coordinates:
stage.addEventListener("stagemousedown", handleMouseDown);
function handleMouseDown(event) {
var p = myShape.globalToLocal(stage.mouseX, stage.mouseY);
var hit = myShape.hitTest(p.x, p.y);
}Shape-to-shape collision is not currently supported by EaselJS.
Parameters:
Returns:
A Boolean indicating whether a visible portion of the DisplayObject intersect the specified local Point.
initialize
()
deprecated
protected
isVisible
()
Boolean
Returns true or false indicating whether the display object would be visible if drawn to a canvas. This does not account for whether it would be visible within the boundaries of the stage.
NOTE: This method is mainly for internal use, though it may be useful for advanced uses.
Returns:
Boolean indicating whether the display object would be visible if drawn to a canvas
localToGlobal
-
x -
y -
[pt]
Transforms the specified x and y position from the coordinate space of the display object to the global (stage) coordinate space. For example, this could be used to position an HTML label over a specific point on a nested display object. Returns a Point instance with x and y properties correlating to the transformed coordinates on the stage.
Example
displayObject.x = 300;
displayObject.y = 200;
stage.addChild(displayObject);
var point = displayObject.localToGlobal(100, 100);
// Results in x=400, y=300Parameters:
Returns:
A Point instance with x and y properties correlating to the transformed coordinates on the stage.
localToLocal
-
x -
y -
target -
[pt]
Transforms the specified x and y position from the coordinate space of this display object to the coordinate space of the target display object. Returns a Point instance with x and y properties correlating to the transformed position in the target's coordinate space. Effectively the same as using the following code with localToGlobal and globalToLocal.
var pt = this.localToGlobal(x, y);
pt = target.globalToLocal(pt.x, pt.y);Parameters:
-
xNumberThe x position in the source display object to transform.
-
yNumberThe y position on the source display object to transform.
-
targetDisplayObjectThe target display object to which the coordinates will be transformed.
-
[pt]Point | Object optionalAn object to copy the result into. If omitted a new Point object with x/y properties will be returned.
Returns:
Returns a Point instance with x and y properties correlating to the transformed position in the target's coordinate space.
off
-
type -
listener -
[useCapture]
A shortcut to the removeEventListener method, with the same parameters and return value. This is a companion to the .on method.
IMPORTANT: To remove a listener added with on, you must pass in the returned wrapper function as the listener. See
on for an example.
on
-
type -
listener -
[scope] -
[once=false] -
[data] -
[useCapture=false]
A shortcut method for using addEventListener that makes it easier to specify an execution scope, have a listener only run once, associate arbitrary data with the listener, and remove the listener.
This method works by creating an anonymous wrapper function and subscribing it with addEventListener.
The wrapper function is returned for use with removeEventListener (or off).
IMPORTANT: To remove a listener added with on, you must pass in the returned wrapper function as the listener, or use
remove. Likewise, each time you call on a NEW wrapper function is subscribed, so multiple calls
to on with the same params will create multiple listeners.
Example
var listener = myBtn.on("click", handleClick, null, false, {count:3});
function handleClick(evt, data) {
data.count -= 1;
console.log(this == myBtn); // true - scope defaults to the dispatcher
if (data.count == 0) {
alert("clicked 3 times!");
myBtn.off("click", listener);
// alternately: evt.remove();
}
}Parameters:
-
typeStringThe string type of the event.
-
listenerFunction | ObjectAn object with a handleEvent method, or a function that will be called when the event is dispatched.
-
[scope]Object optionalThe scope to execute the listener in. Defaults to the dispatcher/currentTarget for function listeners, and to the listener itself for object listeners (ie. using handleEvent).
-
[once=false]Boolean optionalIf true, the listener will remove itself after the first time it is triggered.
-
[data]optionalArbitrary data that will be included as the second parameter when the listener is called.
-
[useCapture=false]Boolean optionalFor events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.
Returns:
Returns the anonymous function that was created and assigned as the listener. This is needed to remove the listener later using .removeEventListener.
removeAllEventListeners
-
[type]
Removes all listeners for the specified type, or all listeners of all types.
Example
// Remove all listeners
displayObject.removeAllEventListeners();
// Remove all click listeners
displayObject.removeAllEventListeners("click");Parameters:
-
[type]String optionalThe string type of the event. If omitted, all listeners for all types will be removed.
removeEventListener
-
type -
listener -
[useCapture]
Removes the specified event listener.
Important Note: that you must pass the exact function reference used when the event was added. If a proxy function, or function closure is used as the callback, the proxy/closure reference must be used - a new proxy or closure will not work.
Example
displayObject.removeEventListener("click", handleClick);set
-
props
Provides a chainable shortcut method for setting a number of properties on the instance.
Example
var myGraphics = new createjs.Graphics().beginFill("#ff0000").drawCircle(0, 0, 25);
var shape = stage.addChild(new createjs.Shape()).set({graphics:myGraphics, x:100, y:100, alpha:0.5});Parameters:
-
propsObjectA generic object containing properties to copy to the DisplayObject instance.
Returns:
Returns the instance the method is called on (useful for chaining calls.)
setBounds
-
x -
y -
width -
height
Allows you to manually specify the bounds of an object that either cannot calculate their own bounds (ex. Shape & Text) for future reference, or so the object can be included in Container bounds. Manually set bounds will always override calculated bounds.
The bounds should be specified in the object's local (untransformed) coordinates. For example, a Shape instance with a 25px radius circle centered at 0,0 would have bounds of (-25, -25, 50, 50).
setTransform
-
[x=0] -
[y=0] -
[scaleX=1] -
[scaleY=1] -
[rotation=0] -
[skewX=0] -
[skewY=0] -
[regX=0] -
[regY=0]
Shortcut method to quickly set the transform properties on the display object. All parameters are optional. Omitted parameters will have the default value set.
Example
displayObject.setTransform(100, 100, 2, 2);Parameters:
-
[x=0]Number optionalThe horizontal translation (x position) in pixels
-
[y=0]Number optionalThe vertical translation (y position) in pixels
-
[scaleX=1]Number optionalThe horizontal scale, as a percentage of 1
-
[scaleY=1]Number optionalthe vertical scale, as a percentage of 1
-
[rotation=0]Number optionalThe rotation, in degrees
-
[skewX=0]Number optionalThe horizontal skew factor
-
[skewY=0]Number optionalThe vertical skew factor
-
[regX=0]Number optionalThe horizontal registration point in pixels
-
[regY=0]Number optionalThe vertical registration point in pixels
Returns:
Returns this instance. Useful for chaining commands.
toString
()
String
Returns a string representation of this object.
Returns:
a string representation of the instance.
updateCache
-
compositeOperation
Redraws the display object to its cache. Calling updateCache without an active cache will throw an error. If compositeOperation is null the current cache will be cleared prior to drawing. Otherwise the display object will be drawn over the existing cache using the specified compositeOperation.
Example
Clear the current graphics of a cached shape, draw some new instructions, and then update the cache. The new line will be drawn on top of the old one. // Not shown: Creating the shape, and caching it.
shapeInstance.clear();
shapeInstance.setStrokeStyle(3).beginStroke("#ff0000").moveTo(100, 100).lineTo(200,200);
shapeInstance.updateCache();Parameters:
-
compositeOperationStringThe compositeOperation to use, or null to clear the cache and redraw it. whatwg spec on compositing.
updateContext
-
ctx
Applies this display object's transformation, alpha, globalCompositeOperation, clipping path (mask), and shadow to the specified context. This is typically called prior to draw.
Parameters:
-
ctxCanvasRenderingContext2DThe canvas 2D to update.
willTrigger
-
type
Indicates whether there is at least one listener for the specified event type on this object or any of its ancestors (parent, parent's parent, etc). A return value of true indicates that if a bubbling event of the specified type is dispatched from this object, it will trigger at least one listener.
This is similar to hasEventListener, but it searches the entire event flow for a listener, not just this object.
Parameters:
-
typeStringThe string type of the event.
Returns:
Returns true if there is at least one listener for the specified event.
Properties
_hitTestContext
CanvasRenderingContext2D
protected
static
alpha
Number
The alpha (transparency) for this display object. 0 is fully transparent, 1 is fully opaque.
Default: 1
cacheCanvas
HTMLCanvasElement | Object
readonly
If a cache is active, this returns the canvas that holds the cached version of this display object. See Cache for more information.
Default: null
cacheID
Number
Returns an ID number that uniquely identifies the current cache for this display object. This can be used to determine if the cache has changed since a previous check.
Default: 0
compositeOperation
String
The composite operation indicates how the pixels of this display object will be composited with the elements
behind it. If null, this property is inherited from the parent container. For more information, read the
whatwg spec on compositing.
Default: null
cursor
String
A CSS cursor (ex. "pointer", "help", "text", etc) that will be displayed when the user hovers over this display object. You must enable mouseover events using the enableMouseOver method to use this property. Setting a non-null cursor on a Container will override the cursor set on its descendants.
Default: null
filters
Array
An array of Filter objects to apply to this display object. Filters are only applied / updated when Cache or UpdateCache is called on the display object, and only apply to the area that is cached.
Default: null
hitArea
DisplayObject
A display object that will be tested when checking mouse interactions or testing getObjectsUnderPoint.
The hit area will have its transformation applied relative to this display object's coordinate space (as though
the hit test object were a child of this display object and relative to its regX/Y). The hitArea will be tested
using only its own alpha value regardless of the alpha value on the target display object, or the target's
ancestors (parents).
If set on a Container, children of the Container will not receive mouse events. This is similar to setting MouseChildren to false.
Note that hitArea is NOT currently used by the hitTest() method, nor is it supported for Stage.
Default: null
id
Number
Unique ID for this display object. Makes display objects easier for some uses.
Default: -1
mask
Shape
A Shape instance that defines a vector mask (clipping path) for this display object. The shape's transformation will be applied relative to the display object's parent coordinates (as if it were a child of the parent).
Default: null
mouseEnabled
Boolean
Indicates whether to include this object when running mouse interactions. Setting this to false for children
of a Container will cause events on the Container to not fire when that child is
clicked. Setting this property to false does not prevent the getObjectsUnderPoint
method from returning the child.
Note: In EaselJS 0.7.0, the mouseEnabled property will not work properly with nested Containers. Please check out the latest NEXT version in GitHub for an updated version with this issue resolved. The fix will be provided in the next release of EaselJS.
Default: true
name
String
An optional name for this display object. Included in toString . Useful for debugging.
Default: null
parent
Container
final
readonly
A reference to the Container or Stage object that contains this display object, or null if it has not been added to one.
Default: null
regX
Number
The left offset for this display object's registration point. For example, to make a 100x100px Bitmap rotate around its center, you would set regX and regY to 50.
Default: 0
regY
Number
The y offset for this display object's registration point. For example, to make a 100x100px Bitmap rotate around its center, you would set regX and regY to 50.
Default: 0
scaleX
Number
The factor to stretch this display object horizontally. For example, setting scaleX to 2 will stretch the display object to twice its nominal width. To horizontally flip an object, set the scale to a negative number.
Default: 1
scaleY
Number
The factor to stretch this display object vertically. For example, setting scaleY to 0.5 will stretch the display object to half its nominal height. To vertically flip an object, set the scale to a negative number.
Default: 1
shadow
Shadow
A shadow object that defines the shadow to render on this display object. Set to null to remove a shadow. If
null, this property is inherited from the parent container.
Default: null
snapToPixel
Boolean
Indicates whether the display object should be drawn to a whole pixel when Stage/snapToPixelEnabled is true. To enable/disable snapping on whole categories of display objects, set this value on the prototype (Ex. Text.prototype.snapToPixel = true).
Default: true
stage
Stage
readonly
Returns the Stage instance that this display object will be rendered on, or null if it has not been added to one.
suppressCrossDomainErrors
Boolean
static
Suppresses errors generated when using features like hitTest, mouse events, and GetObjectsUnderPoint with cross domain content.
Default: false
tickEnabled
Boolean
If false, the tick will not run on this display object (or its children). This can provide some performance benefits. In addition to preventing the "tick" event from being dispatched, it will also prevent tick related updates on some display objects (ex. Sprite & MovieClip frame advancing, DOMElement visibility handling).
Default: true
transformMatrix
Matrix2D
If set, defines the transformation for this display object, overriding all other transformation properties (x, y, rotation, scale, skew).
Default: null
visible
Boolean
Indicates whether this display object should be rendered to the canvas and included when running the Stage Stage/getObjectsUnderPoint method.
Default: true
Events
added
Dispatched when the display object is added to a parent container.
click
Dispatched when the user presses their left mouse button and then releases it while over the display object. See the MouseEvent class for a listing of event properties.
dblclick
Dispatched when the user double clicks their left mouse button over this display object. See the MouseEvent class for a listing of event properties.
mousedown
Dispatched when the user presses their left mouse button over the display object. See the MouseEvent class for a listing of event properties.
mouseout
Dispatched when the user's mouse leaves this display object. This event must be enabled using enableMouseOver. See also rollout. See the MouseEvent class for a listing of event properties.
mouseover
Dispatched when the user's mouse enters this display object. This event must be enabled using enableMouseOver. See also rollover. See the MouseEvent class for a listing of event properties.
pressmove
After a mousedown occurs on a display object, a pressmove event will be generated on that object whenever the mouse moves until the mouse press is released. This can be useful for dragging and similar operations.
pressup
After a mousedown occurs on a display object, a pressup event will be generated on that object when that mouse press is released. This can be useful for dragging and similar operations.
removed
Dispatched when the display object is removed from its parent container.
rollout
This event is similar to mouseout, with the following differences: it does not bubble, and it considers Container instances as an aggregate of their content.
For example, myContainer contains two overlapping children: shapeA and shapeB. The user moves their mouse over shapeA, then directly on to shapeB, then off both. With a listener for Mouseout:event on myContainer, two events would be received, each targeting a child element:
- when the mouse leaves shapeA (target=shapeA)
- when the mouse leaves shapeB (target=shapeB)
This event must be enabled using enableMouseOver. See the MouseEvent class for a listing of event properties.
rollover
This event is similar to mouseover, with the following differences: it does not bubble, and it considers Container instances as an aggregate of their content.
For example, myContainer contains two overlapping children: shapeA and shapeB. The user moves their mouse over shapeA and then directly on to shapeB. With a listener for Mouseover:event on myContainer, two events would be received, each targeting a child element:
- when the mouse enters shapeA (target=shapeA)
- when the mouse enters shapeB (target=shapeB)
This event must be enabled using enableMouseOver. See the MouseEvent class for a listing of event properties.
tick
Dispatched on each display object on a stage whenever the stage updates. This occurs immediately before the rendering (draw) pass. When update is called, first all display objects on the stage dispatch the tick event, then all of the display objects are drawn to stage. Children will have their Tick:event event dispatched in order of their depth prior to the event being dispatched on their parent.