cn.apiclub.captcha.filter.image

类 OpacityFilter

java.lang.Object

cn.apiclub.captcha.filter.image.AbstractBufferedImageOp

cn.apiclub.captcha.filter.image.PointFilter

cn.apiclub.captcha.filter.image.OpacityFilter

所有已实现的接口:

BufferedImageOp, Cloneable

public class OpacityFilter
extends PointFilter

Sets the opacity (alpha) of every pixel in an image to a constant value.

字段概要

从类继承的字段 cn.apiclub.captcha.filter.image.PointFilter

canFilterIndexColorModel

构造器概要

构造器

构造器和说明
OpacityFilter() Construct an OpacityFilter with 50% opacity.
OpacityFilter(int opacity) Construct an OpacityFilter with the given opacity (alpha).

方法概要

方法

限定符和类型	方法和说明
int	filterRGB(int x, int y, int rgb)
int	getOpacity() Get the opacity setting.
void	setOpacity(int opacity) Set the opacity.
String	toString()

从类继承的方法 cn.apiclub.captcha.filter.image.PointFilter

filter, setDimensions

从类继承的方法 cn.apiclub.captcha.filter.image.AbstractBufferedImageOp

clone, createCompatibleDestImage, getBounds2D, getPoint2D, getRenderingHints, getRGB, setRGB

从类继承的方法 java.lang.Object

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

构造器详细资料

OpacityFilter

public OpacityFilter()

Construct an OpacityFilter with 50% opacity.

OpacityFilter

public OpacityFilter(int opacity)

Construct an OpacityFilter with the given opacity (alpha).

参数:

opacity - the opacity (alpha) in the range 0..255

方法详细资料

setOpacity

public void setOpacity(int opacity)

Set the opacity.

参数:

opacity - the opacity (alpha) in the range 0..255

另请参阅:

getOpacity()

getOpacity

public int getOpacity()

Get the opacity setting.

返回:

the opacity

另请参阅:

setOpacity(int)

filterRGB

public int filterRGB(int x,
            int y,
            int rgb)

指定者:

filterRGB 在类中 PointFilter

toString

public String toString()

覆盖:

toString 在类中 Object