程序包 ohos.media.image.common

类 Filter

java.lang.Object

ohos.media.image.common.Filter

直接已知子类:

PropertyFilter

public abstract class Filter
extends Object

Abstract base class for image processing.

从以下版本开始:

4

SystemCapability

SystemCapability.Multimedia#IMAGE

构造器概要

构造器

构造器	说明
Filter()

方法概要

限定符和类型	方法	说明
abstract long	applyToSource(ImageSource source)	Applies the configurations to the source file.
abstract Filter	restore()	Clears all configurations that have not been applied to the source file.

从类继承的方法 java.lang.Object

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

构造器详细资料

Filter

public Filter()

方法详细资料

restore

public abstract Filter restore()

Clears all configurations that have not been applied to the source file.

返回:

Returns this Filter object, which can be used for subsequent setting operations.

从以下版本开始:

4

applyToSource

public abstract long applyToSource(ImageSource source)
                            throws IOException

Applies the configurations to the source file.

This method requires the permission to modify the source file represented by the ImageSource object. The configurations do not take effect until this method is called.

参数:

source - Indicates the image source file to which the configurations will be applied.

返回:

Returns the size (in bytes) of the image file edited based on the configurations if the operation is successful; returns -1 otherwise.

抛出:

IOException - Throws this exception if the modification permission has not been obtained.

从以下版本开始:

4