com.itextpdf.kernel.geom

Class Rectangle

java.lang.Object

com.itextpdf.kernel.geom.Rectangle

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

PageSize, TextRectangle

public class Rectangle
extends Object
implements Cloneable

Class that represent rectangle object.

Field Summary

Fields

Modifier and Type	Field and Description
protected float	height
protected float	width
protected float	x
protected float	y

Constructor Summary

Constructors

Constructor and Description
Rectangle(float width, float height) Creates new instance of rectangle with (0, 0) as the lower left point.
Rectangle(float x, float y, float width, float height) Creates new instance.
Rectangle(Rectangle rect) Creates the copy of given Rectangle

Method Summary

Modifier and Type	Method and Description
Rectangle	applyMargins(float topIndent, float rightIndent, float bottomIndent, float leftIndent, boolean reverse) Change the rectangle according the specified margins.
static Rectangle	calculateBBox(List<Point> points) Calculates the bounding box of passed points.
Rectangle	clone() Creates a "deep copy" of this rectangle, meaning the object returned by this method will be independent of the object being cloned.
boolean	contains(Rectangle rect) Check if this rectangle contains the passed rectangle.
static Rectangle	createBoundingRectangleFromQuadPoint(PdfArray quadPoints) Create the bounding rectangle for the given array of quadpoints.
static List<Rectangle>	createBoundingRectanglesFromQuadPoint(PdfArray quadPoints) Create a list of bounding rectangles from an 8 x n array of Quadpoints.
Rectangle	decreaseHeight(float extra) Decreases the height of rectangle by the given value.
Rectangle	decreaseWidth(float extra) Decreases the width of rectangle by the given value.
boolean	equalsWithEpsilon(Rectangle that) Compares instance of this rectangle with given deviation equals to 0.0001
boolean	equalsWithEpsilon(Rectangle that, float eps) Compares instance of this rectangle with given deviation.
float	getBottom() Gets the Y coordinate of the lower edge of the rectangle.
static Rectangle	getCommonRectangle(Rectangle... rectangles) Calculates the common rectangle which includes all the input rectangles.
float	getHeight() Gets the height of rectangle.
Rectangle	getIntersection(Rectangle rect) Get the rectangle representation of the intersection between this rectangle and the passed rectangle
float	getLeft() Gets the X coordinate of the left edge of the rectangle.
static Rectangle	getRectangleOnRotatedPage(Rectangle rect, PdfPage page) Gets the rectangle as it looks on the rotated page and returns the rectangle in coordinates relevant to the true page origin.
float	getRight() Gets the X coordinate of the right edge of the rectangle.
float	getTop() Gets the Y coordinate of the upper edge of the rectangle.
float	getWidth() Gets the width of rectangle.
float	getX() Gets the X coordinate of lower left point.
float	getY() Gets the Y coordinate of lower left point.
Rectangle	increaseHeight(float extra) Increases the height of rectangle by the given value.
Rectangle	increaseWidth(float extra) Increases the width of rectangle by the given value.
boolean	intersectsLine(float x1, float y1, float x2, float y2) Checks if rectangle have common points with line, specified by two points.
Rectangle	moveDown(float move) Decreases the y coordinate.
Rectangle	moveLeft(float move) Decreases the x coordinate.
Rectangle	moveRight(float move) Increases the x coordinate.
Rectangle	moveUp(float move) Increases the y coordinate.
boolean	overlaps(Rectangle rect) Check if this rectangle and the passed rectangle overlap
boolean	overlaps(Rectangle rect, float epsilon) Check if this rectangle and the passed rectangle overlap
Rectangle	setBbox(float llx, float lly, float urx, float ury) Sets the rectangle by the coordinates, specifying its lower left and upper right points.
Rectangle	setHeight(float height) Sets the height of rectangle.
Rectangle	setWidth(float width) Sets the width of rectangle.
Rectangle	setX(float x) Sets the X coordinate of lower left point.
Rectangle	setY(float y) Sets the Y coordinate of lower left point.
Point[]	toPointsArray() Convert rectangle to an array of points
String	toString() Gets the string representation of rectangle.

Methods inherited from class java.lang.Object

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

Field Detail

x

protected float x

y

protected float y

width

protected float width

height

protected float height

Constructor Detail

Rectangle

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

Creates new instance.

Parameters:

x - the x coordinate of lower left point

y - the y coordinate of lower left point

width - the width value

height - the height value

Rectangle

public Rectangle(float width,
                 float height)

Creates new instance of rectangle with (0, 0) as the lower left point.

Parameters:

width - the width value

height - the height value

Rectangle

public Rectangle(Rectangle rect)

Creates the copy of given Rectangle

Parameters:

rect - the copied Rectangle

Method Detail

getCommonRectangle

public static Rectangle getCommonRectangle(Rectangle... rectangles)

Calculates the common rectangle which includes all the input rectangles.

Parameters:

rectangles - list of input rectangles.

Returns:

common rectangle.

getRectangleOnRotatedPage

public static Rectangle getRectangleOnRotatedPage(Rectangle rect,
                                                  PdfPage page)

Gets the rectangle as it looks on the rotated page and returns the rectangle in coordinates relevant to the true page origin. This rectangle can be used to add annotations, fields, and other objects to the rotated page.

Parameters:

rect - the rectangle as it looks on the rotated page.

page - the page on which one want to process the rectangle.

Returns:

the newly created rectangle with translated coordinates.

calculateBBox

public static Rectangle calculateBBox(List<Point> points)

Calculates the bounding box of passed points.

Parameters:

points - the points which appear inside the area

Returns:

the bounding box of passed points.

toPointsArray

public Point[] toPointsArray()

Convert rectangle to an array of points

Returns:

array of four extreme points of rectangle

getIntersection

public Rectangle getIntersection(Rectangle rect)

Get the rectangle representation of the intersection between this rectangle and the passed rectangle

Parameters:

rect - the rectangle to find the intersection with

Returns:

the intersection rectangle if the passed rectangles intersects with this rectangle, a rectangle representing a line if the intersection is along an edge or a rectangle representing a point if the intersection is a single point, null otherwise

contains

public boolean contains(Rectangle rect)

Check if this rectangle contains the passed rectangle. A rectangle will envelop itself, meaning that for any rectangle rect the expression rect.contains(rect) always returns true.

Parameters:

rect - a rectangle which is to be checked if it is fully contained inside this rectangle.

Returns:

true if this rectangle contains the passed rectangle, false otherwise.

overlaps

public boolean overlaps(Rectangle rect)

Check if this rectangle and the passed rectangle overlap

Parameters:

rect - a rectangle which is to be checked if it overlaps the passed rectangle

Returns:

true if there is overlap of some kind

overlaps

public boolean overlaps(Rectangle rect,
                        float epsilon)

Check if this rectangle and the passed rectangle overlap

Parameters:

rect - a rectangle which is to be checked if it overlaps the passed rectangle

epsilon - if greater than zero, then this is the maximum distance that one rectangle can go to another, but they will not overlap, if less than zero, then this is the minimum required distance between the rectangles so that they do not overlap

Returns:

true if there is overlap of some kind

setBbox

public Rectangle setBbox(float llx,
                         float lly,
                         float urx,
                         float ury)

Sets the rectangle by the coordinates, specifying its lower left and upper right points. May be used in chain.

Note: this method will normalize coordinates, so the rectangle will have non negative width and height, and its x and y coordinates specified lower left point.

Parameters:

llx - the X coordinate of lower left point

lly - the Y coordinate of lower left point

urx - the X coordinate of upper right point

ury - the Y coordinate of upper right point

Returns:

this Rectangle instance.

getX

public float getX()

Gets the X coordinate of lower left point.

Returns:

the X coordinate of lower left point.

setX

public Rectangle setX(float x)

Sets the X coordinate of lower left point. May be used in chain.

Parameters:

x - the X coordinate of lower left point to be set.

Returns:

this Rectangle instance.

getY

public float getY()

Gets the Y coordinate of lower left point.

Returns:

the Y coordinate of lower left point.

setY

public Rectangle setY(float y)

Sets the Y coordinate of lower left point. May be used in chain.

Parameters:

y - the Y coordinate of lower left point to be set.

Returns:

this Rectangle instance.

getWidth

public float getWidth()

Gets the width of rectangle.

Returns:

the width of rectangle.

setWidth

public Rectangle setWidth(float width)

Sets the width of rectangle. May be used in chain.

Parameters:

width - the the width of rectangle to be set.

Returns:

this Rectangle instance.

getHeight

public float getHeight()

Gets the height of rectangle.

Returns:

the height of rectangle.

setHeight

public Rectangle setHeight(float height)

Sets the height of rectangle. May be used in chain.

Parameters:

height - the the width of rectangle to be set.

Returns:

this Rectangle instance.

increaseHeight

public Rectangle increaseHeight(float extra)

Increases the height of rectangle by the given value. May be used in chain.

Parameters:

extra - the value of the extra height to be added.

Returns:

this Rectangle instance.

decreaseHeight

public Rectangle decreaseHeight(float extra)

Decreases the height of rectangle by the given value. May be used in chain.

Parameters:

extra - the value of the extra height to be subtracted.

Returns:

this Rectangle instance.

increaseWidth

public Rectangle increaseWidth(float extra)

Increases the width of rectangle by the given value. May be used in chain.

Parameters:

extra - the value of the extra wudth to be added.

Returns:

this Rectangle instance.

decreaseWidth

public Rectangle decreaseWidth(float extra)

Decreases the width of rectangle by the given value. May be used in chain.

Parameters:

extra - the value of the extra width to be subtracted.

Returns:

this Rectangle instance.

getLeft

public float getLeft()

Gets the X coordinate of the left edge of the rectangle. Same as: getX().

Returns:

the X coordinate of the left edge of the rectangle.

getRight

public float getRight()

Gets the X coordinate of the right edge of the rectangle. Same as: getX() + getWidth().

Returns:

the X coordinate of the right edge of the rectangle.

getTop

public float getTop()

Gets the Y coordinate of the upper edge of the rectangle. Same as: getY() + getHeight().

Returns:

the Y coordinate of the upper edge of the rectangle.

getBottom

public float getBottom()

Gets the Y coordinate of the lower edge of the rectangle. Same as: getY().

Returns:

the Y coordinate of the lower edge of the rectangle.

moveDown

public Rectangle moveDown(float move)

Decreases the y coordinate.

Parameters:

move - the value on which the position will be changed.

Returns:

this Rectangle instance.

moveUp

public Rectangle moveUp(float move)

Increases the y coordinate.

Parameters:

move - the value on which the position will be changed.

Returns:

this Rectangle instance.

moveRight

public Rectangle moveRight(float move)

Increases the x coordinate.

Parameters:

move - the value on which the position will be changed.

Returns:

this Rectangle instance.

moveLeft

public Rectangle moveLeft(float move)

Decreases the x coordinate.

Parameters:

move - the value on which the position will be changed.

Returns:

this Rectangle instance.

applyMargins

public Rectangle applyMargins(float topIndent,
                              float rightIndent,
                              float bottomIndent,
                              float leftIndent,
                              boolean reverse)

Change the rectangle according the specified margins.

Parameters:

topIndent - the value on which the top y coordinate will change.

rightIndent - the value on which the right x coordinate will change.

bottomIndent - the value on which the bottom y coordinate will change.

leftIndent - the value on which the left x coordinate will change.

reverse - if true the rectangle will expand, otherwise it will shrink

Returns:

the rectangle with applied margins

intersectsLine

public boolean intersectsLine(float x1,
                              float y1,
                              float x2,
                              float y2)

Checks if rectangle have common points with line, specified by two points.

Parameters:

x1 - the x coordinate of first line's point.

y1 - the y coordinate of first line's point.

x2 - the x coordinate of second line's point.

y2 - the y coordinate of second line's point.

Returns:

true if rectangle have common points with line and false otherwise.

toString

public String toString()

Gets the string representation of rectangle.

Overrides:

toString in class Object

Returns:

the string representation of rectangle.

clone

public Rectangle clone()

Creates a "deep copy" of this rectangle, meaning the object returned by this method will be independent of the object being cloned.

Overrides:

clone in class Object

Returns:

the copied rectangle.

equalsWithEpsilon

public boolean equalsWithEpsilon(Rectangle that)

Compares instance of this rectangle with given deviation equals to 0.0001

Parameters:

that - the Rectangle to compare with.

Returns:

true if the difference between corresponding rectangle values is less than deviation and false otherwise.

equalsWithEpsilon

public boolean equalsWithEpsilon(Rectangle that,
                                 float eps)

Compares instance of this rectangle with given deviation.

Parameters:

that - the Rectangle to compare with.

eps - the deviation value.

Returns:

true if the difference between corresponding rectangle values is less than deviation and false otherwise.

createBoundingRectanglesFromQuadPoint

public static List<Rectangle> createBoundingRectanglesFromQuadPoint(PdfArray quadPoints)
                                                             throws PdfException

Create a list of bounding rectangles from an 8 x n array of Quadpoints.

Parameters:

quadPoints - 8xn array of numbers representing 4 points

Returns:

a list of bounding rectangles for the passed quadpoints

Throws:

PdfException - if the passed array's size is not a multiple of 8.

createBoundingRectangleFromQuadPoint

public static Rectangle createBoundingRectangleFromQuadPoint(PdfArray quadPoints)
                                                      throws PdfException

Create the bounding rectangle for the given array of quadpoints.

Parameters:

quadPoints - an array containing 8 numbers that correspond to 4 points.

Returns:

The smallest orthogonal rectangle containing the quadpoints.

Throws:

PdfException - if the passed array's size is not a multiple of 8.