Adobe® Flex® 4 Language Reference
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mx.charts.chartClasses 
GraphicsUtilities 
Packagemx.charts.chartClasses
Classpublic class GraphicsUtilities
InheritanceGraphicsUtilities Inheritance Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

A set of internal graphics rendering utilities used by the various chart classes.



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
Public Methods
 MethodDefined By
  
[static] Converts a fill value into a solid color.
GraphicsUtilities
  
drawArc(g:Graphics, x:Number, y:Number, startAngle:Number, arc:Number, radius:Number, yRadius:Number = NaN, continueFlag:Boolean = false):void
[static] Draws an arc in the target Graphics object.
GraphicsUtilities
  
drawPolyLine(g:Graphics, pts:Array, start:int, end:int, hProp:String, vProp:String, stroke:IStroke, form:Object, moveToStart:Boolean = true):void
[static] Draws a line connecting the datapoints using one of various forms.
GraphicsUtilities
  
[static] Converts a style value into a Fill object.
GraphicsUtilities
  
fillRect(g:Graphics, left:Number, top:Number, right:Number, bottom:Number, fill:Object = null, ls:Object = null):void
[static] Fill a rectangle using the provided IFill and IStroke objects.
GraphicsUtilities
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
  
[static] Applies the values in a Stroke to the provded Graphics object.
GraphicsUtilities
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
Method Detail

colorFromFill

()method
public static function colorFromFill(f:Object):uint

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Converts a fill value into a solid color. This convenience method pulls a color value out of a Fill that best approximates the Fill on the screen.

Parameters

f:Object — The Fill object to extract a color from.

Returns
uint — A color value representing the Fill.

drawArc

()method 
public static function drawArc(g:Graphics, x:Number, y:Number, startAngle:Number, arc:Number, radius:Number, yRadius:Number = NaN, continueFlag:Boolean = false):void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Draws an arc in the target Graphics object.

Parameters

g:Graphics — The Graphics object to draw into.
 
x:Number — The horizontal origin of the arc.
 
y:Number — The vertical origin of the arc.
 
startAngle:Number — The starting angle, in radians, of the arc.
 
arc:Number — The sweep, in radians, of the arc.
 
radius:Number — The horizontal radius, in pixels, of the arc
 
yRadius:Number (default = NaN) — The vertical radius, in pixels, of the arc. If unspecified, it is assumed to be the same as the radius
 
continueFlag:Boolean (default = false) — Indicates whether the routine should move the graphics pen to the beginning of the arc before drawing. Set to true to continue drawing a line that is already in progress.

drawPolyLine

()method 
public static function drawPolyLine(g:Graphics, pts:Array, start:int, end:int, hProp:String, vProp:String, stroke:IStroke, form:Object, moveToStart:Boolean = true):void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Draws a line connecting the datapoints using one of various forms.

Parameters

g:Graphics — The Graphics object to draw into.
 
pts:Array — An Array of datapoints that define the line.
 
start:int — The index of the first point in the pts Array to use when drawing the line.
 
end:int — The index of the last point, exclusive, to use when drawing the line.
 
hProp:String — The name of the property in the objects contained in the pts Array that defines the horizontal position of the points in the line.
 
vProp:String — The name of the property in the objects contained in the pts Array that defines the vertical position of the points in the line.
 
stroke:IStroke — The Stroke used to render the line.
 
form:Object — The form to render the line with. Valid values are "segment","horizontal","vertical","step","reverseStep", or "curve". These forms are similar to the LineSeries class's form property.
 
moveToStart:Boolean (default = true) — Indicates whether to first move the pen to the beginning of the line before drawing. Pass false to use this function to continue a line in progress.

fillFromStyle

()method 
public static function fillFromStyle(v:Object):IFill

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Converts a style value into a Fill object. This convenience method converts a value assigned through styles into a Fill object that can be used to fill an area on the screen. If the value is numeric, this function converts it into a corresponding SolidColor.

Parameters

v:Object — The value to convert into a Fill.

Returns
IFill — The corresponding IFill object.

fillRect

()method 
public static function fillRect(g:Graphics, left:Number, top:Number, right:Number, bottom:Number, fill:Object = null, ls:Object = null):void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Fill a rectangle using the provided IFill and IStroke objects. This utility function fills the provided rectangle in the Graphics object with the provided Fill and Stroke. If no Stroke is provided, the rectangle is filled with no border. If no Fill is provided, the rectangle is drawn with no fill.

Parameters

g:Graphics — The Graphics object to draw into.
 
left:Number — The left of the rectangle to fill.
 
top:Number — The top of the rectangle to fill.
 
right:Number — The right of the rectangle to fill.
 
bottom:Number — The bottom of the rectangle to fill.
 
fill:Object (default = null) — The IFill object to fill the rectangle with. Set this parameter to null to draw a rectangle with no Fill.
 
ls:Object (default = null) — The stroke object to draw the rectangle with. Set this parameter to null to draw a rectangle with no Stroke.

setLineStyle

()method 
public static function setLineStyle(g:Graphics, ls:IStroke):void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Applies the values in a Stroke to the provded Graphics object. This utility function applies the Stroke passed in, or clears the line style of the provided Graphics object if the ls parameter is set to null.

Parameters

g:Graphics — The Graphics object to modify.
 
ls:IStroke — The IStroke instance to apply; set to null to render with no Stroke.