#

API Documentation for: 0.8.1
Show: Inherited Protected Private Deprecated

# DisplayProps Class

Defined in: `DisplayProps:39`
Module: EaselJS

Used for calculating and encapsulating display related properties.

## Constructor

### `DisplayProps`

(

- `[visible=true]`
- `[alpha=1]`
- `[shadow=null]`
- `[compositeOperation=null]`
- `[matrix]`

)

Defined in `DisplayProps:39`

#### Parameters:

- `[visible=true]` Number optional

  Visible value.

- `[alpha=1]` Number optional

  Alpha value.

- `[shadow=null]` Number optional

  A Shadow instance or null.

- `[compositeOperation=null]` Number optional

  A compositeOperation value or null.

- `[matrix]` Number optional

  A transformation matrix. Defaults to a new identity matrix.

- Index
- Methods
- Properties

## Item Index

### Methods

- append
- clone
- identity
- prepend
- setValues

### Properties

- alpha
- compositeOperation
- matrix
- shadow
- visible

## Methods

### `append`

(

- `visible`
- `alpha`
- `shadow`
- `compositeOperation`
- `[matrix]`

)
DisplayProps chainable

Defined in `append:110`

Appends the specified display properties. This is generally used to apply a child's properties its parent's.

#### Parameters:

- `visible` Boolean

  desired visible value

- `alpha` Number

  desired alpha value

- `shadow` Shadow

  desired shadow value

- `compositeOperation` String

  desired composite operation value

- `[matrix]` Matrix2D optional

  a Matrix2D instance

#### Returns:

DisplayProps:

This instance. Useful for chaining method calls.

### `clone`

() DisplayProps

Defined in `clone:173`

Returns a clone of the DisplayProps instance. Clones the associated matrix.

#### Returns:

DisplayProps:

a clone of the DisplayProps instance.

### `identity`

() DisplayProps chainable

Defined in `identity:159`

Resets this instance and its matrix to default values.

#### Returns:

DisplayProps:

This instance. Useful for chaining method calls.

### `prepend`

(

- `visible`
- `alpha`
- `shadow`
- `compositeOperation`
- `[matrix]`

)
DisplayProps chainable

Defined in `prepend:130`

Prepends the specified display properties. This is generally used to apply a parent's properties to a child's. For example, to get the combined display properties that would be applied to a child, you could use:

    var o = myDisplayObject;
    var props = new createjs.DisplayProps();
    do {
        // prepend each parent's props in turn:
        props.prepend(o.visible, o.alpha, o.shadow, o.compositeOperation, o.getMatrix());
    } while (o = o.parent);

#### Parameters:

- `visible` Boolean

  desired visible value

- `alpha` Number

  desired alpha value

- `shadow` Shadow

  desired shadow value

- `compositeOperation` String

  desired composite operation value

- `[matrix]` Matrix2D optional

  a Matrix2D instance

#### Returns:

DisplayProps:

This instance. Useful for chaining method calls.

### `setValues`

(

- `[visible=true]`
- `[alpha=1]`
- `[shadow=null]`
- `[compositeOperation=null]`
- `[matrix]`

)
DisplayProps chainable

Defined in `setValues:89`

Reinitializes the instance with the specified values.

#### Parameters:

- `[visible=true]` Number optional

  Visible value.

- `[alpha=1]` Number optional

  Alpha value.

- `[shadow=null]` Number optional

  A Shadow instance or null.

- `[compositeOperation=null]` Number optional

  A compositeOperation value or null.

- `[matrix]` Number optional

  A transformation matrix. Defaults to an identity matrix.

#### Returns:

DisplayProps:

This instance. Useful for chaining method calls.

## Properties

### `alpha`

Number

Defined in `alpha:54`

Property representing the alpha that will be applied to a display object.

### `compositeOperation`

String

Defined in `compositeOperation:66`

Property representing the compositeOperation that will be applied to a display object. You can find a list of valid composite operations at: https://developer.mozilla.org/en/Canvas_tutorial/Compositing

### `matrix`

Matrix2D

Defined in `matrix:80`

The transformation matrix that will be applied to a display object.

### `shadow`

Shadow

Defined in `shadow:60`

Property representing the shadow that will be applied to a display object.

### `visible`

Boolean

Defined in `visible:74`

Property representing the value for visible that will be applied to a display object.