| Package | mx.graphics |
| Class | public class RectangularDropShadow |
This class optimizes drop shadows for a common case. If you are applying a drop shadow to a rectangularly-shaped object whose edges fall on pixel boundaries, then this class should be used instead of using the DropShadowFilter directly.
This class accepts the first four parameters that are passed
to DropShadowFilter: alpha, angle,
color, and distance.
In addition, this class accepts the corner radii for each of the four
corners of the rectangularly-shaped object that is casting a shadow.
Once those 8 values have been set,
this class pre-computes the drop shadow in an offscreen Bitmap.
When the drawShadow() method is called, pieces of the
precomputed drop shadow are copied onto the passed-in Graphics object.
See also
| Property | Defined by | ||
|---|---|---|---|
| alpha : Number | RectangularDropShadow | ||
| angle : Number | RectangularDropShadow | ||
| blRadius : Number
The corner radius of the bottom left corner
of the rounded rectangle that is casting the shadow.
| RectangularDropShadow | ||
| brRadius : Number
The corner radius of the bottom right corner
of the rounded rectangle that is casting the shadow.
| RectangularDropShadow | ||
| color : int | RectangularDropShadow | ||
| distance : Number | RectangularDropShadow | ||
| tlRadius : Number
The corner radius of the top left corner
of the rounded rectangle that is casting the shadow.
| RectangularDropShadow | ||
| trRadius : Number
The corner radius of the top right corner
of the rounded rectangle that is casting the shadow.
| RectangularDropShadow | ||
| Method | Defined by | ||
|---|---|---|---|
|
Constructor.
| RectangularDropShadow | ||
|
drawShadow(g:Graphics, x:Number, y:Number, width:Number, height:Number):void
Renders the shadow on the screen.
| RectangularDropShadow | ||
| alpha | property |
alpha:Number [read-write]Implementation
public function get alpha():Number
public function set alpha(value:Number):void
| angle | property |
angle:Number [read-write]Implementation
public function get angle():Number
public function set angle(value:Number):void
| blRadius | property |
blRadius:Number [read-write]The corner radius of the bottom left corner of the rounded rectangle that is casting the shadow. May be zero for non-rounded rectangles.
Implementation public function get blRadius():Number
public function set blRadius(value:Number):void
| brRadius | property |
brRadius:Number [read-write]The corner radius of the bottom right corner of the rounded rectangle that is casting the shadow. May be zero for non-rounded rectangles.
Implementation public function get brRadius():Number
public function set brRadius(value:Number):void
| color | property |
color:int [read-write]Implementation
public function get color():int
public function set color(value:int):void
| distance | property |
distance:Number [read-write]Implementation
public function get distance():Number
public function set distance(value:Number):void
| tlRadius | property |
tlRadius:Number [read-write]The corner radius of the top left corner of the rounded rectangle that is casting the shadow. May be zero for non-rounded rectangles.
Implementation public function get tlRadius():Number
public function set tlRadius(value:Number):void
| trRadius | property |
trRadius:Number [read-write]The corner radius of the top right corner of the rounded rectangle that is casting the shadow. May be zero for non-rounded rectangles.
Implementation public function get trRadius():Number
public function set trRadius(value:Number):void
| RectangularDropShadow | () | constructor |
public function RectangularDropShadow()Constructor.
| drawShadow | () | method |
public function drawShadow(g:Graphics, x:Number, y:Number, width:Number, height:Number):voidRenders the shadow on the screen.
Parametersg:Graphics — The Graphics object on which to draw the shadow.
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|
x:Number — The horizontal offset of the drop shadow,
based on the Graphics object's position.
|
|
y:Number — The vertical offset of the drop shadow,
based on the Graphics object's position.
|
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width:Number — The width of the shadow, in pixels.
|
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height:Number — The height of the shadow, in pixels.
|