用于 Adobe® Flash® Platform 的 ActionScript® 3.0 参考
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GraphicsGradientFill  - AS3

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com.adobe.solutions.acm.authoring.presentation
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com.adobe.solutions.acm.authoring.presentation.fragment
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如何使用 ActionScript 示例
法律声明
flash.display
public final class GraphicsGradientFill
继承GraphicsGradientFill Inheritance Object
实现 IGraphicsFill, IGraphicsData

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

定义渐变填充。

将 GraphicsGradientFill 对象与 Graphics.drawGraphicsData() 方法一起使用。绘制 GraphicsGradientFill 对象与调用 Graphics.beginGradientFill() 方法是等效的。

相关 API 元素



公共属性
 属性由以下参数定义
  alphas : Array
colors 数组中的对应颜色的 Alpha 值的数组。
GraphicsGradientFill
  colors : Array
渐变中使用的 RGB 十六进制颜色值数组。
GraphicsGradientFill
 Inheritedconstructor : Object
对类对象或给定对象实例的构造函数的引用。
Object
  focalPointRatio : Number
一个控制渐变的焦点位置的数字。
GraphicsGradientFill
  interpolationMethod : String
InterpolationMethod 类中用于指定要使用的值的值。
GraphicsGradientFill
  matrix : Matrix
一个由 Matrix 类定义的转换矩阵。
GraphicsGradientFill
  ratios : Array
颜色分布比例的数组。
GraphicsGradientFill
  spreadMethod : String
SpreadMethod 类中用于指定要使用的扩展方法的值。
GraphicsGradientFill
  type : String
GradientType 类中用于指定要使用的渐变类型的值。
GraphicsGradientFill
公共方法
 方法由以下参数定义
  
GraphicsGradientFill(type:String = "linear", colors:Array = null, alphas:Array = null, ratios:Array = null, matrix:* = null, spreadMethod:* = pad, interpolationMethod:String = "rgb", focalPointRatio:Number = 0.0)
创建新的 GraphicsGradientFill 对象。
GraphicsGradientFill
 Inherited
表示对象是否已经定义了指定的属性。
Object
 Inherited
表示 Object 类的实例是否在指定为参数的对象的原型链中。
Object
 Inherited
表示指定的属性是否存在、是否可枚举。
Object
 Inherited
设置循环操作动态属性的可用性。
Object
 Inherited
返回此对象的字符串表示形式,其格式设置遵守区域设置特定的约定。
Object
 Inherited
返回指定对象的字符串表示形式。
Object
 Inherited
返回指定对象的原始值。
Object
属性详细信息

alphas

属性
public var alphas:Array

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

colors 数组中的对应颜色的 Alpha 值的数组。有效值为 0 到 1。如果值小于 0,则使用 0。如果值大于 1,则使用 1。

colors

属性 
public var colors:Array

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

渐变中使用的 RGB 十六进制颜色值数组。例如,红色为 0xFF0000,蓝色为 0x0000FF 等等。可以至多指定 15 种颜色。对于每种颜色,请在 alphas 和 ratios 属性中指定对应值。

focalPointRatio

属性 
public var focalPointRatio:Number

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

一个控制渐变的焦点位置的数字。值 0 将焦点设置在中心。值 1 表示焦点位于渐变圆的一条边界上;值 -1 表示焦点位于渐变圆的另一条边界上。小于 -1 或大于 1 的值将分别舍入为 -1 或 1。例如,下例显示了设置为 0.75 的 focalPointRatio

focalPointRatio 设置为 0.75 时的放射状渐变

interpolationMethod

属性 
interpolationMethod:String

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

InterpolationMethod 类中用于指定要使用的值的值。有效值为:InterpolationMethod.LINEAR_RGBInterpolationMethod.RGB

例如,下例显示了两种颜色之间的简单线性渐变(spreadMethod 参数设置为 SpreadMethod.REFLECT)。不同的插值方法会更改外观,如下所示:

以 InterpolationMethod.LINEAR_RGB 线性渐变 以 InterpolationMethod.RGB 线性渐变
InterpolationMethod.LINEAR_RGBInterpolationMethod.RGB



实现
    public function get interpolationMethod():String
    public function set interpolationMethod(value:String):void

相关 API 元素

matrix

属性 
public var matrix:Matrix

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

一个由 Matrix 类定义的转换矩阵。flash.geom.Matrix 类包括一个 createGradientBox() 方法,可通过该方法设置与 beginGradientFill() 方法一起使用的矩阵。

相关 API 元素

ratios

属性 
public var ratios:Array

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

颜色分布比例的数组。有效值为 0 到 255。该值定义 100% 采样的颜色所在位置的宽度百分比。值 0 表示渐变框中的左侧位置,值 255 表示渐变框中的右侧位置。

注意:此值表示渐变框中的位置,而不是最终渐变的坐标空间。最终渐变可能会比渐变框更宽或更窄。为 colors 属性中的每个值指定一个对应值。

例如,对于包括蓝和绿两种颜色的线性渐变,以下示例显示了渐变中的颜色基于不同 ratios 数组值的配比:

ratios渐变
[0, 127]ratios 为 0 和 127 时蓝色到绿色的线性渐变
[0, 255]ratios 为 0 和 255 时蓝色到绿色的线性渐变
[127, 255]ratios 为 127 和 255 时蓝色到绿色的线性渐变

数组中的值必须持续增加;例如,[0, 63, 127, 190, 255]

spreadMethod

属性 
spreadMethod:String

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

SpreadMethod 类中用于指定要使用的扩展方法的值。有效值为:SpreadMethod.PADSpreadMethod.REFLECTSpreadMethod.REPEAT

例如,下例显示了两种颜色之间的简单线性渐变:

     import flash.geom.*
     import flash.display.*
     var fillType:String = GradientType.LINEAR;
     var colors:Array = [0xFF0000, 0x0000FF];
     var alphas:Array = [1, 1];
     var ratios:Array = [0x00, 0xFF];
     var matr:Matrix = new Matrix();
     matr.createGradientBox(20, 20, 0, 0, 0);
     var spreadMethod:String = SpreadMethod.PAD;
     this.graphics.beginGradientFill(fillType, colors, alphas, ratios, matr, spreadMethod);       
     this.graphics.drawRect(0,0,100,100);
     

此示例将 SpreadMethod.PAD 用于 spread 方法,并且渐变填充看起来将类似于下图:

以 SpreadMethod.PAD 线性渐变

如果将 SpreadMethod.REFLECT 用于 spread 方法,则渐变填充看起来将类似于下图:

以 SpreadMethod.REFLECT 线性渐变

如果将 SpreadMethod.REPEAT 用于 spread 方法,则渐变填充看起来将类似于下图:

以 SpreadMethod.REPEAT 线性渐变



实现
    public function get spreadMethod():String
    public function set spreadMethod(value:String):void

相关 API 元素

type

属性 
type:String

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

GradientType 类中用于指定要使用的渐变类型的值。值为 GradientType.LINEARGradientType.RADIAL



实现
    public function get type():String
    public function set type(value:String):void

相关 API 元素

构造函数详细信息

GraphicsGradientFill

()构造函数
public function GraphicsGradientFill(type:String = "linear", colors:Array = null, alphas:Array = null, ratios:Array = null, matrix:* = null, spreadMethod:* = pad, interpolationMethod:String = "rgb", focalPointRatio:Number = 0.0)

语言版本: ActionScript 3.0
运行时版本: Flash Player 10, AIR 1.5

创建新的 GraphicsGradientFill 对象。

参数
type:String (default = "linear") — 用于指定要使用哪种渐变类型的 GradientType 类的值:GradientType.LINEARGradientType.RADIAL
 
colors:Array (default = null) — 渐变中使用的 RGB 十六进制颜色值的数组(例如,红色为 0xFF0000,蓝色为 0x0000FF,等等)。可以至多指定 15 种颜色。对于每种颜色,请在 alphas 和 ratios 参数中指定对应值。
 
alphas:Array (default = null) — colors 数组中对应颜色的 alpha 值数组;有效值为 0 到 1。如果值小于 0,则使用 0。如果值大于 1,则使用 1。
 
ratios:Array (default = null) — 颜色分布比率的数组;有效值为 0 到 255。该值定义 100% 采样的颜色所在位置的宽度百分比。值 0 表示渐变框中的左侧位置,255 表示渐变框中的右侧位置。
 
matrix:* (default = null) — 一个由 flash.geom.Matrix 类定义的转换矩阵。flash.geom.Matrix 类包括 createGradientBox() 方法,通过该方法可以方便地设置矩阵,以便与 beginGradientFill() 方法一起使用。
 
spreadMethod:* (default = pad) — 用于指定要使用哪种 spread 方法的 SpreadMethod 类的值:SpreadMethod.PADSpreadMethod.REFLECTSpreadMethod.REPEAT
 
interpolationMethod:String (default = "rgb") — 用于指定要使用哪个值的 InterpolationMethod 类的值:InterpolationMethod.LINEAR_RGBInterpolationMethod.RGB
 
focalPointRatio:Number (default = 0.0) — 一个控制渐变的焦点位置的数字。值 0 将焦点设置在中心。值 1 将焦点设置在渐变圆的一条边界上。值 -1 将焦点设置在渐变圆的另一条边界上。小于 -1 或大于 1 的值将分别舍入为 -1 或 1。

相关 API 元素





[ X ]为什么显示为英语?
《ActionScript 3.0 参考》中的内容以英语显示

《ActionScript 3.0 参考》中的部分内容未翻译成所有语言。当某个语言元素未翻译时,将显示为英语。例如,ga.controls.HelpBox 类未翻译成任何语言。因此在简体中文版的参考中,ga.controls.HelpBox 类显示为英语。