Paquete | spark.filters |
Clase | public class BlurFilter |
Herencia | BlurFilter BaseFilter EventDispatcher Object |
Implementa | IBitmapFilter |
Versión del lenguaje: | ActionScript 3.0 |
Versión de producto: | Flex 4 |
Versiones de motor de ejecución: | Flash Player 10, AIR 1.5 |
quality
property
of this filter is set to low, the result is a softly unfocused look.
When the quality
property is set to high, it approximates a Gaussian blur
filter. 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 BlurFilter()
.
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 thefilters
property of an object does not modify the object, and you can remove the filter by clearing thefilters
property. - To apply filters to BitmapData objects, use the
BitmapData.applyFilter()
method. CallingapplyFilter()
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 cacheAsBitmap
property of the
display 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 (scaleX
and scaleY
are not set to 100%), the
filter effect 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.
Sintaxis MXMLOcultar sintaxis MXMLThe <s:BlurFilter>
tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:BlurFilter Properties blurX="4.0" blurY="4.0" quality="low" />
Más ejemplos
Elementos de API relacionados
flash.display.DisplayObject.filters
flash.display.DisplayObject.cacheAsBitmap
flash.display.BitmapData.applyFilter()
Propiedad | Definido por | ||
---|---|---|---|
blurX : Number
The amount of horizontal blur. | BlurFilter | ||
blurY : Number
The amount of vertical blur. | BlurFilter | ||
constructor : Object
Una referencia a la clase de objeto o función constructora para una instancia de objeto determinada. | Object | ||
quality : int
The number of times to apply the filter. | BlurFilter |
Método | Definido por | ||
---|---|---|---|
Constructor. | BlurFilter | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un objeto de detector de eventos con un objeto EventDispatcher, de modo que el detector reciba la notificación de un evento. | EventDispatcher | ||
Returns a copy of this filter object. | BlurFilter | ||
Distribuye un evento en el flujo del evento. | EventDispatcher | ||
Comprueba si el objeto EventDispatcher tiene detectores registrados para un tipo concreto de evento. | EventDispatcher | ||
Indica si un objeto tiene definida una propiedad especificada. | Object | ||
Indica si hay una instancia de la clase Object en la cadena de prototipo del objeto especificado como parámetro. | Object | ||
Propagates a change event when the filter has changed. | BaseFilter | ||
Indica si existe la propiedad especificada y si es enumerable. | Object | ||
Elimina un detector del objeto EventDispatcher. | EventDispatcher | ||
Establece la disponibilidad de una propiedad dinámica para operaciones de bucle. | Object | ||
Devuelve la representación de cadena de este objeto, con formato según las convenciones específicas de configuración regional. | Object | ||
Devuelve la representación de cadena del objeto especificado. | Object | ||
Devuelve el valor simple del objeto especificado. | Object | ||
Comprueba si hay registrado un detector de eventos con este objeto EventDispatcher o con cualquiera de sus ascendientes para el tipo de evento concreto. | EventDispatcher |
blurX | propiedad |
blurX:Number
Versión del lenguaje: | ActionScript 3.0 |
Versión de producto: | Flex 4 |
Versiones de motor de ejecución: | Flash Player 10, AIR 1.5 |
The amount of horizontal blur. Valid values are 0 to 255. A blur of 1 or less means that the original image is copied as is. The default value is 4. Values that are a power of 2 (such as 2, 4, 8, 16, and 32) are optimized to render more quickly than other values.
El valor predeterminado es 4.0.
Implementación
public function get blurX():Number
public function set blurX(value:Number):void
blurY | propiedad |
blurY:Number
Versión del lenguaje: | ActionScript 3.0 |
Versión de producto: | Flex 4 |
Versiones de motor de ejecución: | Flash Player 10, AIR 1.5 |
The amount of vertical blur. Valid values are 0 to 255. A blur of 1 or less means that the original image is copied as is. The default value is 4. Values that are a power of 2 (such as 2, 4, 8, 16, and 32) are optimized to render more quickly than other values.
El valor predeterminado es 4.0.
Implementación
public function get blurY():Number
public function set blurY(value:Number):void
quality | propiedad |
quality:int
Versión del lenguaje: | ActionScript 3.0 |
Versión de producto: | Flex 4 |
Versiones de motor de ejecución: | Flash Player 10, AIR 1.5 |
The number of times to apply the filter. The default value is
BitmapFilterQuality.LOW
, which is equivalent to applying the filter
once. The value BitmapFilterQuality.MEDIUM
applies the filter twice;
the value BitmapFilterQuality.HIGH
applies it three times. Filters
with lower values are rendered more quickly.
For most applications, a quality value of low, medium, or high is
sufficient. Although you can use additional numeric values up to 15
to achieve different effects, higher values are rendered more slowly.
Instead of increasing the value of quality, you can often get a similar
effect, and with faster rendering, by simply increasing the values of
the blurX
and blurY
properties.
El valor predeterminado es "low".
Implementación
public function get quality():int
public function set quality(value:int):void
BlurFilter | () | Información sobre |
public function BlurFilter(blurX:Number = 4.0, blurY:Number = 4.0, quality:int = 1)
Versión del lenguaje: | ActionScript 3.0 |
Versión de producto: | Flex 4 |
Versiones de motor de ejecución: | Flash Player 10, AIR 1.5 |
Constructor. The default values create a soft, unfocused image.
ParámetrosblurX:Number (default = 4.0 ) — The amount to blur horizontally. Valid values are from 0 to 255.0 (floating-point
value).
| |
blurY:Number (default = 4.0 ) — The amount to blur vertically. Valid values are from 0 to 255.0 (floating-point
value).
| |
quality:int (default = 1 ) — The number of times to apply the filter. You can specify the quality using
the flash.filters.BitmapFilterQuality constants:
High quality approximates a Gaussian blur. For most applications, these three values are sufficient. Although you can use additional numeric values up to 15 to achieve different effects, be aware that higher values are rendered more slowly. |
clone | () | método |
public function clone():BitmapFilter
Versión del lenguaje: | ActionScript 3.0 |
Versión de producto: | Flex 4 |
Versiones de motor de ejecución: | Flash Player 10, AIR 1.5 |
Returns a copy of this filter object.
Valor devueltoBitmapFilter — A new BlurFilter instance with all the same
properties as the original BlurFilter instance.
|
<?xml version="1.0"?> <!-- filters/examples/BlurFilterExample.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 myBlurFilter:BlurFilter; private var color:Number = 0xFF33FF; public function createFilters():void { myBlurFilter = new BlurFilter(3, 3, BitmapFilterQuality.MEDIUM); b1.filters = [myBlurFilter]; } ]]></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:BlurFilter blurX="3" blurY="3" quality="{BitmapFilterQuality.MEDIUM}"/> </s:filters> </s:Button> </s:VGroup> </s:Application>
Tue Jun 12 2018, 02:12 PM Z