程序包 ohos.accessibility.ability

类 DisplayResizeController

java.lang.Object

ohos.accessibility.ability.DisplayResizeController

public class DisplayResizeController
extends Object

Provides a controller for the display resizing operations.

This controller offers the following functions:

1. Registering a listener to observe the display resizing operations.
2. Controlling the display resizing.

从以下版本开始:

3

SystemCapability

SystemCapability.Accessibility#ABILITY

构造器概要

构造器

构造器	说明
DisplayResizeController(int connectionId, int displayId, Object lock)	A constructor used to create a DisplayResizeController instance based on the connection ID, display ID, and lock.

方法概要

限定符和类型	方法	说明
void	addListener(DisplayResizeListener listener)	Adds a DisplayResizeListener instance to observe display resizing operations.
boolean	deleteListener(DisplayResizeListener listener)	Removes the specified DisplayResizeListener instance.
float	getCenterX()	Obtains the X coordinate of the center in this display resizing rectangle.
float	getCenterY()	Obtains the Y coordinate of the center in this display resizing rectangle.
Rect	getDisplayResizeRect()	Obtains the display resizing rectangle.
float	getScale()	Obtains the resizing scale of this display resizing rectangle.
boolean	reset(boolean isShouldAnimate)	Resets the display to its initial size.
boolean	setCenter(float centerX, float centerY, boolean isShouldAnimate)	Sets the center coordinates for the display resizing rectangle.
boolean	setScale(float scale, boolean isShouldAnimate)	Sets the display resizing scale.

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

DisplayResizeController

public DisplayResizeController(int connectionId,
                               int displayId,
                               Object lock)

A constructor used to create a DisplayResizeController instance based on the connection ID, display ID, and lock.

参数:

connectionId - Indicates the connection ID used to create DisplayResizeController.

displayId - Indicates the display ID used to create DisplayResizeController.

lock - Indicates the lock used to create DisplayResizeController.

方法详细资料

addListener

public void addListener(DisplayResizeListener listener)

Adds a DisplayResizeListener instance to observe display resizing operations.

参数:

listener - Indicates the listener to add.

deleteListener

public boolean deleteListener(DisplayResizeListener listener)

Removes the specified DisplayResizeListener instance.

参数:

listener - Indicates the listener to remove.

返回:

Returns true if the listener is successfully removed; returns false otherwise.

getScale

public float getScale()

Obtains the resizing scale of this display resizing rectangle.

返回:

Returns the resizing scale.

getCenterX

public float getCenterX()

Obtains the X coordinate of the center in this display resizing rectangle.

返回:

Returns the X coordinate of the center.

getCenterY

public float getCenterY()

Obtains the Y coordinate of the center in this display resizing rectangle.

返回:

Returns the Y coordinate of the center.

setScale

public boolean setScale(float scale,
                        boolean isShouldAnimate)

Sets the display resizing scale.

参数:

scale - Indicates the scale for resizing the display, ranging from 1.0f to 10.0f.

isShouldAnimate - Specifies whether animation is required. The value can be true or false.

返回:

Returns true if the resizing scale is successfully set; returns false otherwise.

setCenter

public boolean setCenter(float centerX,
                         float centerY,
                         boolean isShouldAnimate)

Sets the center coordinates for the display resizing rectangle.

参数:

centerX - Indicates the X coordinate of the center for resizing the display.

centerY - Indicates the Y coordinate of the center for resizing the display.

isShouldAnimate - Specifies whether animation is required. The value can be true or false.

返回:

Returns true if the center coordinates are successfully set; returns false otherwise.

getDisplayResizeRect

public Rect getDisplayResizeRect()

Obtains the display resizing rectangle.

返回:

Returns the display resizing rectangle.

reset

public boolean reset(boolean isShouldAnimate)

Resets the display to its initial size.

参数:

isShouldAnimate - Specifies whether animation is required. The value can be true or false.

返回:

Returns true if the display is successfully reset; returns false otherwise.