程序包 ohos.agp.render

类 LinearShader

java.lang.Object

ohos.agp.render.Shader

ohos.agp.render.LinearShader

public class LinearShader
extends Shader

Represents a shader that shades colors in linear manner.

This class inherits from Shader. You can use the methods in this class to configure the direction of the shading colors, for example, from left to right, from top to bottom, or from the upper left corner to the lower right corner.

从以下版本开始:

3

嵌套类概要

从类继承的嵌套类/接口 ohos.agp.render.Shader

Shader.TileMode

字段概要

字段

限定符和类型	字段	说明
Point[]	points	Indicates the coordinates of the start and end points of the shading line.
float[]	stops	Indicates the positions corresponding the shading colors in the Shader#shaderColors array.

从类继承的字段 ohos.agp.render.Shader

intColors, mTileMode, shaderColors

构造器概要

构造器

构造器	说明
LinearShader()	Default constructor used to create a LinearShader.
LinearShader(Point[] newPoints, float[] newStops, Color[] newColors, Shader.TileMode newTileMode)	A constructor used to create a LinearShader based on the specified points, color positions, colors, and tile mode.

方法概要

限定符和类型	方法	说明
protected Point[]	getShaderPoints()	Obtains the coordinates of the shading points of this LinearShader.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从类继承的方法 ohos.agp.render.Shader

getShaderColors, getTileMode, setShaderMatrix

字段详细资料

points

public Point[] points

Indicates the coordinates of the start and end points of the shading line.

The points array contains two elements, representing the coordinates of the start and end points of the shading line respectively. For example. If the points value is {(200,200), (400, 500)}, the shading area is defined by the enclosing rectangle of these two coordinates, and the colors will be shaded along the line from the start point to the end point.

从以下版本开始:

3

stops

public float[] stops

Indicates the positions corresponding the shading colors in the Shader#shaderColors array.

The positions of colors in stops increase monotonically from 0 to 1.0. When stops is null, the colors are evenly shaded.

从以下版本开始:

3

构造器详细资料

LinearShader

public LinearShader()

Default constructor used to create a LinearShader.

Calling this constructor will automatically invoke LinearShader#LinearShader(Point[], float[], Color[], TileMode) to create a linear shader.

从以下版本开始:

3

LinearShader

public LinearShader(Point[] newPoints,
                    float[] newStops,
                    Color[] newColors,
                    Shader.TileMode newTileMode)

A constructor used to create a LinearShader based on the specified points, color positions, colors, and tile mode.

参数:

newPoints - Indicates the points that specify the shading line, along which the colors are shaded. The shading area is specified by the enclosing rectangle with this shading line as its diagonal.

newStops - Indicates the positions of all colors in the shading color array.

newColors - Indicates the array of linear shading colors.

newTileMode - Indicates the tile mode used to shade colors when the drawn object exceeds the shading area defined by the linear shader.

从以下版本开始:

3

方法详细资料

getShaderPoints

protected Point[] getShaderPoints()

Obtains the coordinates of the shading points of this LinearShader.

返回:

Returns the values of LinearShader#points of the LinearShader.

从以下版本开始:

3