程序包 ohos.media.image.common

类 Rect

java.lang.Object

ohos.media.image.common.Rect

public class Rect
extends Object

Describes rectangle areas of images.

A rectangle area is represented by the abscissa and ordinate of the upper-left point, width and height.

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SystemCapability

SystemCapability.Multimedia#IMAGE

字段概要

字段

限定符和类型	字段	说明
int	height	Indicates the height of a rectangle.
int	minX	Indicates the minimum abscissa value of a rectangle, which is the abscissa of the upper left point.
int	minY	Indicates the minimum ordinate value of a rectangle, which is the ordinate of the upper left point.
int	width	Indicates the width of a rectangle.

构造器概要

构造器

构造器	说明
Rect()	A constructor used to create a Rect instance, with the abscissa and coordinate of the upper-left point, width, and height set to 0.
Rect(int minX, int minY, int width, int height)	A constructor used to create a Rect instance.
Rect(Rect rect)	A constructor used to create a Rect instance with another one as the input parameter.

方法概要

限定符和类型	方法	说明
boolean	cropRect(int minX, int minY, int width, int height)	Crops a rectangle area.
boolean	equals(Object obj)	Checks whether the Rect object is the same as the one passed through the input parameter.
int	hashCode()	Generates a hash code value based on the Rect object.
void	setEmpty()	Sets the abscissa, coordinate, width, and height to 0.
String	toString()	Obtains the string representation of the Rect object.

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

height

public int height

Indicates the height of a rectangle.

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minX

public int minX

Indicates the minimum abscissa value of a rectangle, which is the abscissa of the upper left point.

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minY

public int minY

Indicates the minimum ordinate value of a rectangle, which is the ordinate of the upper left point.

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width

public int width

Indicates the width of a rectangle.

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构造器详细资料

Rect

public Rect()

A constructor used to create a Rect instance, with the abscissa and coordinate of the upper-left point, width, and height set to 0.

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Rect

public Rect(int minX,
            int minY,
            int width,
            int height)

A constructor used to create a Rect instance.

The abscissa and coordinate of the upper-left point, and the width and height of the rectangle are used as input parameters.

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Rect

public Rect(Rect rect)

A constructor used to create a Rect instance with another one as the input parameter.

If the input parameter is null, this method creates an empty Rect object with the abscissa and coordinate of the upper-left point, width, and height set to 0.

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方法详细资料

toString

public String toString()

Obtains the string representation of the Rect object.

覆盖:

toString 在类中 Object

返回:

Returns the string representation.

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equals

public boolean equals(Object obj)

Checks whether the Rect object is the same as the one passed through the input parameter.

This method overrides the equals method.

覆盖:

equals 在类中 Object

参数:

obj - Indicates the Rect object.

返回:

Returns true if the Rect objects are the same; returns false otherwise.

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另请参阅:

Object.hashCode(), HashMap

hashCode

public int hashCode()

Generates a hash code value based on the Rect object.

覆盖:

hashCode 在类中 Object

返回:

Returns the hash code value.

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另请参阅:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

setEmpty

public void setEmpty()

Sets the abscissa, coordinate, width, and height to 0.

Sets the abscissa and coordinate of the upper-left point, width, and height to 0.

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cropRect

public boolean cropRect(int minX,
                        int minY,
                        int width,
                        int height)

Crops a rectangle area.

The intersection area of the original rectangle and the input rectangle is cropped to adjust the original rectangle area.

参数:

minX - Indicates the upper-left point abscissa of the input rectangle.

minY - Indicates the upper-left point ordinate of the input rectangle.

width - Indicates the width of the input rectangle.

height - Indicates the height of the input rectangle.

返回:

Returns true if the original rectangle area is cropped; returns false otherwise.

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