Package org.gnome.gdk

Class Rectangle

java.lang.Object

io.github.jwharm.javagi.base.ProxyInstance

org.gnome.gdk.Rectangle

All Implemented Interfaces:

Proxy

Direct Known Subclasses:

Allocation

@Generated("io.github.jwharm.JavaGI")
public class Rectangle
extends ProxyInstance

A GdkRectangle data type for representing rectangles.

GdkRectangle is identical to cairo_rectangle_t. Together with Cairo’s cairo_region_t data type, these are the central types for representing sets of pixels.

The intersection of two rectangles can be computed with intersect(org.gnome.gdk.Rectangle, org.gnome.gdk.Rectangle); to find the union of two rectangles use union(org.gnome.gdk.Rectangle, org.gnome.gdk.Rectangle).

The cairo_region_t type provided by Cairo is usually used for managing non-rectangular clipping of graphical operations.

The Graphene library has a number of other data types for regions and volumes in 2D and 3D.

Constructor Summary

Constructors

Constructor	Description
Rectangle()	Allocate a new Rectangle.
Rectangle(int x, int y, int width, int height)	Allocate a new Rectangle with the fields set to the provided values.
Rectangle(int x, int y, int width, int height, Arena arena)	Allocate a new Rectangle with the fields set to the provided values.
Rectangle(Arena arena)	Allocate a new Rectangle.
Rectangle(MemorySegment address)	Create a Rectangle proxy instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
boolean	containsPoint(int x, int y)	Returns true if this Rectangle contains the point described by x and y.
boolean	equal(Rectangle rect2)	Checks if the two given rectangles are equal.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
static Type	getType()	Get the GType of the Rectangle class
boolean	intersect(Rectangle src2, @Nullable Rectangle dest)	Calculates the intersection of two rectangles.
int	readHeight()	Read the value of the field height.
int	readWidth()	Read the value of the field width.
int	readX()	Read the value of the field x.
int	readY()	Read the value of the field y.
void	union(Rectangle src2, Rectangle dest)	Calculates the union of two rectangles.
void	writeHeight(int height)	Write a value in the field height.
void	writeWidth(int width)	Write a value in the field width.
void	writeX(int x)	Write a value in the field x.
void	writeY(int y)	Write a value in the field y.

Methods inherited from class io.github.jwharm.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

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

Constructor Details

Rectangle

public Rectangle(MemorySegment address)

Create a Rectangle proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

Rectangle

public Rectangle(Arena arena)

Allocate a new Rectangle.

Parameters:

arena - to control the memory allocation scope

Rectangle

public Rectangle()

Allocate a new Rectangle. The memory is allocated with Arena.ofAuto().

Rectangle

public Rectangle(int x,
 int y,
 int width,
 int height,
 Arena arena)

Allocate a new Rectangle with the fields set to the provided values.

Parameters:

x - value for the field x

y - value for the field y

width - value for the field width

height - value for the field height

arena - to control the memory allocation scope

Rectangle

public Rectangle(int x,
 int y,
 int width,
 int height)

Allocate a new Rectangle with the fields set to the provided values. The memory is allocated with Arena.ofAuto().

Parameters:

x - value for the field x

y - value for the field y

width - value for the field width

height - value for the field height

Method Details

getType

public static Type getType()

Get the GType of the Rectangle class

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

readX

public int readX()

Read the value of the field x.

Returns:

The value of the field x

writeX

public void writeX(int x)

Write a value in the field x.

Parameters:

x - The new value for the field x

readY

public int readY()

Read the value of the field y.

Returns:

The value of the field y

writeY

public void writeY(int y)

Write a value in the field y.

Parameters:

y - The new value for the field y

readWidth

public int readWidth()

Read the value of the field width.

Returns:

The value of the field width

writeWidth

public void writeWidth(int width)

Write a value in the field width.

Parameters:

width - The new value for the field width

readHeight

public int readHeight()

Read the value of the field height.

Returns:

The value of the field height

writeHeight

public void writeHeight(int height)

Write a value in the field height.

Parameters:

height - The new value for the field height

containsPoint

public boolean containsPoint(int x,
 int y)

Returns true if this Rectangle contains the point described by x and y.

Parameters:

x - X coordinate

y - Y coordinate

Returns:

true if this Rectangle contains the point

equal

public boolean equal(Rectangle rect2)

Checks if the two given rectangles are equal.

Parameters:

rect2 - a GdkRectangle

Returns:

true if the rectangles are equal.

intersect

public boolean intersect(Rectangle src2,
 @Nullable
 @Nullable Rectangle dest)

Calculates the intersection of two rectangles.

It is allowed for dest to be the same as either this Rectangle or src2. If the rectangles do not intersect, dest’s width and height is set to 0 and its x and y values are undefined. If you are only interested in whether the rectangles intersect, but not in the intersecting area itself, pass null for dest.

Parameters:

src2 - a GdkRectangle

dest - return location for the intersection of this Rectangle and src2

Returns:

true if the rectangles intersect.

union

public void union(Rectangle src2,
 Rectangle dest)

Calculates the union of two rectangles.

The union of rectangles this Rectangle and src2 is the smallest rectangle which includes both this Rectangle and src2 within it. It is allowed for dest to be the same as either this Rectangle or src2.

Note that this function does not ignore 'empty' rectangles (ie. with zero width or height).

Parameters:

src2 - a GdkRectangle

dest - return location for the union of this Rectangle and src2