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BevelFilter

Package | spark.filters
Class | public class BevelFilter
Inheritance | BevelFilter BaseDimensionFilter BaseFilter flash.events.EventDispatcher
Implements | IBitmapFilter

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The BevelFilter class lets you add a bevel effect to display objects. A bevel effect gives objects such as buttons a three-dimensional look. You can customize the look of the bevel with different highlight and shadow colors, the amount of blur on the bevel, the angle of the bevel, the placement of the bevel, and a knockout effect. You can apply the filter to any display object (that is, objects that inherit from the DisplayObject class), such as MovieClip, SimpleButton, TextField, and Video objects, as well as to BitmapData objects.

To create a new filter, use the constructor `new BevelFilter()`. The use of filters depends on the object to which you apply the filter:

- To apply filters to movie clips, text fields, buttons, and video, use the `filters` property (inherited from DisplayObject). Setting the `filters` property of an object does not modify the object, and you can remove the filter by clearing the `filters` property.
- To apply filters to BitmapData objects, use the `BitmapData.applyFilter()` method. Calling `applyFilter()` on a BitmapData object takes the source BitmapData object and the filter object and generates a filtered image as a result.

If you apply a filter to a display object, the value of the `cacheAsBitmap` property of the object is set to `true`. If you remove all filters, the original value of `cacheAsBitmap` is restored.

This filter supports Stage scaling. However, it does not support general scaling, rotation, and skewing. If the object itself is scaled (if the `scaleX` and `scaleY` properties are not set to 100%), the filter is not scaled. It is scaled only when the user zooms in on the Stage.

A filter is not applied if the resulting image exceeds the maximum dimensions. In AIR 1.5 and Flash Player 10, the maximum is 8,191 pixels in width or height, and the total number of pixels cannot exceed 16,777,215 pixels. (So, if an image is 8,191 pixels wide, it can only be 2,048 pixels high.) If, for example, you zoom in on a large movie clip with a filter applied, the filter is turned off if the resulting image exceeds the maximum dimensions.

MXML Syntax Show MXML Syntax
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The `<s:BevelFilter>` tag inherits all of the tag attributes of its superclass and adds the following tag attributes:

      <s:BevelFilter
        Properties
        angle="45"
        distance="4"
        highlightAlpha="1"
        highlightColor="0xFFFFFF"
        shadowAlpha="1"
        shadowColor="0x000000"
        type="inner"
      />

View the examples

See also

flash.filters.BevelFilter
flash.display.DisplayObject.filters
flash.display.DisplayObject.cacheAsBitmap
flash.display.BitmapData.applyFilter()

Public Properties
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| Property | Defined By
--- | --- | ---
|  | angle : Number The angle of the bevel, in degrees. | BevelFilter
|  | blurX : Number The amount of horizontal blur. | BaseDimensionFilter
|  | blurY : Number The amount of vertical blur. | BaseDimensionFilter
|  | distance : Number The offset distance of the bevel. | BevelFilter
|  | highlightAlpha : Number The alpha transparency value of the highlight color. | BevelFilter
|  | highlightColor : uint The highlight color of the bevel. | BevelFilter
|  | knockout : Boolean Specifies whether the object has a knockout effect. | BaseDimensionFilter
|  | quality : int The number of times to apply the filter. | BaseDimensionFilter
|  | shadowAlpha : Number The alpha transparency value of the shadow color. | BevelFilter
|  | shadowColor : uint The shadow color of the bevel. | BevelFilter
|  | strength : Number The strength of the imprint or spread. | BaseDimensionFilter
|  | type : String The placement of the filter effect. | BevelFilter

Public Methods
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| Method | Defined By
--- | --- | ---
|  | BevelFilter(distance:Number = 4.0, angle:Number = 45, highlightColor:uint = 0xFFFFFF, highlightAlpha:Number = 1.0, shadowColor:uint = 0x000000, shadowAlpha:Number = 1.0, blurX:Number = 4.0, blurY:Number = 4.0, strength:Number = 1, quality:int = 1, type:String = inner, knockout:Boolean = false) Constructor. | BevelFilter
|  | clone():BitmapFilter Returns a copy of this filter object. | BevelFilter
|  | notifyFilterChanged():void Propagates a change event when the filter has changed. | BaseFilter

Public Constants
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| Constant | Defined By
--- | --- | ---
|  | CHANGE : String = change [static] The string "change". | BaseFilter

Property Detail

angle | property

`angle:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The angle of the bevel, in degrees. Valid values are from 0 to 360. The angle value represents the angle of the theoretical light source falling on the object and determines the placement of the effect relative to the object. If the distance property is set to 0, the effect is not offset from the object and, therefore, the angle property has no effect.

The default value is `45`.

Implementation
`public function get angle():Number`
`public function set angle(value:Number):void`

distance | property |

`distance:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The offset distance of the bevel. Valid values are in pixels (floating point).

The default value is `4`.

Implementation
`public function get distance():Number`
`public function set distance(value:Number):void`

highlightAlpha | property |

`highlightAlpha:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The alpha transparency value of the highlight color. The value is specified as a normalized value from 0 to 1. For example, .25 sets a transparency value of 25%.

The default value is `1`.

Implementation
`public function get highlightAlpha():Number`
`public function set highlightAlpha(value:Number):void`

highlightColor | property |

`highlightColor:uint`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The highlight color of the bevel. Valid values are in hexadecimal format, 0xRRGGBB.

The default value is `0xFFFFFF`.

Implementation
`public function get highlightColor():uint`
`public function set highlightColor(value:uint):void`

shadowAlpha | property |

`shadowAlpha:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The alpha transparency value of the shadow color. This value is specified as a normalized value from 0 to 1. For example, .25 sets a transparency value of 25%.

The default value is `1`.

Implementation
`public function get shadowAlpha():Number`
`public function set shadowAlpha(value:Number):void`

shadowColor | property |

`shadowColor:uint`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The shadow color of the bevel. Valid values are in hexadecimal format, 0xRRGGBB.

The default value is `0x000000`.

Implementation
`public function get shadowColor():uint`
`public function set shadowColor(value:uint):void`

type | property |

`type:String`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The placement of the filter effect. Possible values are flash.filters.BitmapFilterType constants:

- `BitmapFilterType.OUTER` - Glow on the outer edge of the object.
- `BitmapFilterType.INNER` - Glow on the inner edge of the object; the default.
- `BitmapFilterType.FULL` - Glow on top of the object.

The default value is `BitmapFilterType.INNER`.

Implementation
`public function get type():String`
`public function set type(value:String):void`

See also

flash.filters.BitmapFilterType
Constructor Detail

BevelFilter | () | Constructor

`public function BevelFilter(distance:Number = 4.0, angle:Number = 45, highlightColor:uint = 0xFFFFFF, highlightAlpha:Number = 1.0, shadowColor:uint = 0x000000, shadowAlpha:Number = 1.0, blurX:Number = 4.0, blurY:Number = 4.0, strength:Number = 1, quality:int = 1, type:String = inner, knockout:Boolean = false)`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Constructor.

Parameters

| `distance:Number` (default = `4.0`)`` — The offset distance of the bevel, in pixels (floating point).
| `angle:Number` (default = `45`)`` — The angle of the bevel, from 0 to 360 degrees.
| `highlightColor:uint` (default = `0xFFFFFF`)`` — The highlight color of the bevel, 0xRRGGBB.
| `highlightAlpha:Number` (default = `1.0`)`` — The alpha transparency value of the highlight color. Valid values are 0.0 to 1.0. For example, .25 sets a transparency value of 25%.
| `shadowColor:uint` (default = `0x000000`)`` — The shadow color of the bevel, 0xRRGGBB.
| `shadowAlpha:Number` (default = `1.0`)`` — The alpha transparency value of the shadow color. Valid values are 0.0 to 1.0. For example, .25 sets a transparency value of 25%.
| `blurX:Number` (default = `4.0`)`` — The amount of horizontal blur in pixels. Valid values are 0 to 255.0 (floating point).
| `blurY:Number` (default = `4.0`)`` — The amount of vertical blur in pixels. Valid values are 0 to 255.0 (floating point).
| `strength:Number` (default = `1`)`` — The strength of the imprint or spread. The higher the value, the more color is imprinted and the stronger the contrast between the bevel and the background. Valid values are 0 to 255.0.
| `quality:int` (default = `1`)`` — The quality of the bevel. Valid values are 0 to 15, but for most applications, you can use `flash.filters.BitmapFilterQuality` constants: `BitmapFilterQuality.LOW` `BitmapFilterQuality.MEDIUM` `BitmapFilterQuality.HIGH` Filters with lower values render faster. You can use the other available numeric values to achieve different effects.
| `type:String` (default = `inner`)`` — The type of bevel. Valid values are `flash.filters.BitmapFilterType` constants: `BitmapFilterType.INNER`, `BitmapFilterType.OUTER`, or `BitmapFilterType.FULL`.
| `knockout:Boolean` (default = `false`)`` — Applies a knockout effect (`true`), which effectively makes the object's fill transparent and reveals the background color of the document.

See also

flash.filters.BitmapFilterQuality
flash.filters.BitmapFilterType
Method Detail

clone | () | method

`public function clone():BitmapFilter`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Returns a copy of this filter object.

Returns

| `BitmapFilter` — A new BevelFilter instance with all the same properties as the original BevelFilter instance.

Examples
BevelFilterExample.mxml

    <?xml version="1.0"?>
    <!--

      Licensed to the Apache Software Foundation (ASF) under one or more
      contributor license agreements.  See the NOTICE file distributed with
      this work for additional information regarding copyright ownership.
      The ASF licenses this file to You under the Apache License, Version 2.0
      (the "License"); you may not use this file except in compliance with
      the License.  You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.

    -->
    <!-- filters/examples/BevelFilterExample.mxml -->
    <s:Application
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        xmlns:s="library://ns.adobe.com/flex/spark"
        creationComplete="createFilters()">

      <fx:Script><![CDATA[
         import spark.filters.*;
         import flash.filters.BitmapFilterQuality;
         import flash.filters.BitmapFilterType;

         private var myBevelFilter:BevelFilter;
         private var color:Number = 0xFF33FF;

         public function createFilters():void {
            myBevelFilter = new BevelFilter(5, 45, 0xFFFF00, .8, 0x0000FF, .8, 3, 3, 1, BitmapFilterQuality.MEDIUM, BitmapFilterType.INNER, false);
            b1.filters = [myBevelFilter];
         }

      ]]></fx:Script>

        <s:VGroup>
            <!-- This button has a filter applied in ActionScript. -->
            <s:Button id="b1" label="Click me"/>

            <!-- This button has a filter applied in MXML. -->
            <s:Button id="b2" label="Click me">
                <s:filters>
                    <s:BevelFilter
                        distance="5"
                        angle="45"
                        highlightColor="0xFFFF00"
                        highlightAlpha=".8"
                        shadowColor="0x0000FF"
                        shadowAlpha=".8"
                        blurX="3"
                        blurY="3"
                        strength="1"
                        quality="{BitmapFilterQuality.MEDIUM}"
                        type="{BitmapFilterType.INNER}"
                        knockout="false"/>
                </s:filters>
            </s:Button>

        </s:VGroup>
    </s:Application>

Sun Mar 5 2017, 03:42 PM +11:00