Package | spark.filters |
Class | public class GradientGlowFilter |
Inheritance | GradientGlowFilter GradientFilter BaseDimensionFilter BaseFilter EventDispatcher Object |
Implements | IBitmapFilter |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
The use of filters depends on the object to which you apply the filter:
- To apply filters to display objects, use the
filters
property. 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 clear 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 scaleX
and scaleY
are set
to a value other than 1.0), 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.) For example, if 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 SyntaxHide MXML SyntaxThe <s:GradientGlowFilter>
tag inherits all of the tag
attributes of its superclass and adds no tag attributes:
<s:GradientGlowFilter/>
Default MXML Propertyentries
See also
flash.filters.GradientGlowFilter
flash.display.BitmapData.applyFilter()
flash.display.DisplayObject.cacheAsBitmap
flash.display.DisplayObject.filters
Filters
Method | Defined By | ||
---|---|---|---|
GradientGlowFilter(distance:Number = 4.0, angle:Number = 45, colors:Array = null, alphas:Array = null, ratios:Array = null, blurX:Number = 4.0, blurY:Number = 4.0, strength:Number = 1, quality:int = 1, type:String = "outer", knockout:Boolean = false)
Constructor. | GradientGlowFilter | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | ||
Returns a copy of this filter object. | GradientGlowFilter | ||
Dispatches an event into the event flow. | EventDispatcher | ||
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | ||
Indicates whether an object has a specified property defined. | Object | ||
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | ||
BaseFilter | |||
Indicates whether the specified property exists and is enumerable. | Object | ||
Removes a listener from the EventDispatcher object. | EventDispatcher | ||
Sets the availability of a dynamic property for loop operations. | Object | ||
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | ||
Returns the string representation of the specified object. | Object | ||
Returns the primitive value of the specified object. | Object | ||
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher |
GradientGlowFilter | () | Constructor |
public function GradientGlowFilter(distance:Number = 4.0, angle:Number = 45, colors:Array = null, alphas:Array = null, ratios:Array = null, blurX:Number = 4.0, blurY:Number = 4.0, strength:Number = 1, quality:int = 1, type:String = "outer", knockout:Boolean = false)
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
Parametersdistance:Number (default = 4.0 ) — The offset distance of the glow.
| |
angle:Number (default = 45 ) — The angle, in degrees. Valid values are 0 to 360.
| |
colors:Array (default = null ) — An array of colors that defines a gradient.
For example, red is 0xFF0000, blue is 0x0000FF, and so on.
| |
alphas:Array (default = null ) — An array of alpha transparency values for the corresponding colors in
the colors array. Valid values for each element in the array are 0 to 1.
For example, a value of .25 sets the alpha transparency value to 25%.
| |
ratios:Array (default = null ) — An array of color distribution ratios. Valid values are
0 to 255. This value defines the percentage of the width where the color
is sampled at 100 percent.
| |
blurX:Number (default = 4.0 ) — 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. Values that are a power of 2 (such as 2, 4, 8, 16 and 32) are optimized
to render more quickly than other values.
| |
blurY:Number (default = 4.0 ) — 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. Values that are a power of 2 (such as 2, 4, 8, 16 and 32) are optimized
to render more quickly than other values.
| |
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 glow and the background.
Valid values are 0 to 255. The larger the value, the stronger the imprint. A value of 0
means the filter is not applied.
| |
quality:int (default = 1 ) — The number of times to apply the filter. Use the flash.filters.BitmapFilterQuality constants:
For more information, see the description of the | |
type:String (default = "outer ") — The placement of the filter effect. Possible values are the
flash.filters.BitmapFilterType constants:
| |
knockout:Boolean (default = false ) — Specifies whether the object has a knockout effect. A knockout effect
makes the object's fill transparent and reveals the background color of the document.
The value true specifies a knockout effect;
the default is false (no knockout effect).
|
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.
ReturnsBitmapFilter — A new GradientGlowFilter instance with all the
same properties as the original GradientGlowFilter instance.
|
<?xml version="1.0"?> <!-- filters/examples/GradientGlowFilterExample .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 myGradientGlowFilter:GradientGlowFilter; private var colors:Array = [0xFFFFFF, 0xFF0000, 0xFFFF00, 0x00CCFF]; private var alphas:Array = [0, 1, 1, 1]; private var ratios:Array = [0, 63, 126, 255]; public function createFilters():void { myGradientGlowFilter = new GradientGlowFilter(0, 45, colors, alphas, ratios, 50, 50, 2.5, BitmapFilterQuality.HIGH, BitmapFilterType.OUTER, false); b1.filters = [myGradientGlowFilter]; } ]]></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:GradientGlowFilter distance="10" angle="45" blurX="50" blurY="50" strength="2.5" quality="{BitmapFilterQuality.HIGH}" type="{BitmapFilterType.OUTER}" knockout="false"> <s:entries> <s:GradientEntry alpha="0" color="0xFFFFFF" ratio="0"/> <s:GradientEntry alpha="1" color="0xFF0000" ratio="63"/> <s:GradientEntry alpha="1" color="0xFFFF00" ratio="126"/> <s:GradientEntry alpha="1" color="0x00CCFF" ratio="255"/> </s:entries> </s:GradientGlowFilter> </s:filters> </s:Button> </s:VGroup> </s:Application>
Fri Mar 19 2010, 02:45 AM -07:00