com.itextpdf.text.pdf.PdfRectangle Maven / Gradle / Ivy
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*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
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package com.itextpdf.text.pdf;
import com.itextpdf.awt.geom.AffineTransform;
import com.itextpdf.text.Rectangle;
/**
* PdfRectangle is the PDF Rectangle object.
*
* Rectangles are used to describe locations on the page and bounding boxes for several
* objects in PDF, such as fonts. A rectangle is represented as an array of
* four numbers, specifying the lower left x, lower left y, upper right x,
* and upper right y coordinates of the rectangle, in that order.
* This object is described in the 'Portable Document Format Reference Manual version 1.3'
* section 7.1 (page 183).
*
* @see com.itextpdf.text.Rectangle
* @see PdfArray
*/
public class PdfRectangle extends NumberArray {
// membervariables
/** lower left x */
private float llx = 0;
/** lower left y */
private float lly = 0;
/** upper right x */
private float urx = 0;
/** upper right y */
private float ury = 0;
// constructors
/**
* Constructs a PdfRectangle-object.
*
* @param llx lower left x
* @param lly lower left y
* @param urx upper right x
* @param ury upper right y
*
* @since rugPdf0.10
*/
public PdfRectangle(float llx, float lly, float urx, float ury, int rotation) {
super();
if (rotation == 90 || rotation == 270) {
this.llx = lly;
this.lly = llx;
this.urx = ury;
this.ury = urx;
}
else {
this.llx = llx;
this.lly = lly;
this.urx = urx;
this.ury = ury;
}
super.add(new PdfNumber(this.llx));
super.add(new PdfNumber(this.lly));
super.add(new PdfNumber(this.urx));
super.add(new PdfNumber(this.ury));
}
public PdfRectangle(float llx, float lly, float urx, float ury) {
this(llx, lly, urx, ury, 0);
}
/**
* Constructs a PdfRectangle-object starting from the origin (0, 0).
*
* @param urx upper right x
* @param ury upper right y
*/
public PdfRectangle(float urx, float ury, int rotation) {
this(0, 0, urx, ury, rotation);
}
public PdfRectangle(float urx, float ury) {
this(0, 0, urx, ury, 0);
}
/**
* Constructs a PdfRectangle-object with a Rectangle-object.
*
* @param rectangle a Rectangle
*/
public PdfRectangle(Rectangle rectangle, int rotation) {
this(rectangle.getLeft(), rectangle.getBottom(), rectangle.getRight(), rectangle.getTop(), rotation);
}
public PdfRectangle(Rectangle rectangle) {
this(rectangle.getLeft(), rectangle.getBottom(), rectangle.getRight(), rectangle.getTop(), 0);
}
// methods
/**
* Returns the high level version of this PdfRectangle
* @return this PdfRectangle translated to class Rectangle
*/
public Rectangle getRectangle() {
return new Rectangle(left(), bottom(), right(), top());
}
/**
* Overrides the add-method in PdfArray in order to prevent the adding of extra object to the array.
*
* @param object PdfObject to add (will not be added here)
* @return false
*/
public boolean add(PdfObject object) {
return false;
}
/**
* Block changes to the underlying PdfArray
* @param values stuff we'll ignore. Ha!
* @return false. You can't add anything to a PdfRectangle
* @since 2.1.5
*/
public boolean add( float values[] ) {
return false;
}
/**
* Block changes to the underlying PdfArray
* @param values stuff we'll ignore. Ha!
* @return false. You can't add anything to a PdfRectangle
* @since 2.1.5
*/
public boolean add( int values[] ) {
return false;
}
/**
* Block changes to the underlying PdfArray
* @param object Ignored.
* @since 2.1.5
*/
public void addFirst( PdfObject object ) {
}
/**
* Returns the lower left x-coordinate.
*
* @return the lower left x-coordinate
*/
public float left() {
return llx;
}
/**
* Returns the upper right x-coordinate.
*
* @return the upper right x-coordinate
*/
public float right() {
return urx;
}
/**
* Returns the upper right y-coordinate.
*
* @return the upper right y-coordinate
*/
public float top() {
return ury;
}
/**
* Returns the lower left y-coordinate.
*
* @return the lower left y-coordinate
*/
public float bottom() {
return lly;
}
/**
* Returns the lower left x-coordinate, considering a given margin.
*
* @param margin a margin
* @return the lower left x-coordinate
*/
public float left(int margin) {
return llx + margin;
}
/**
* Returns the upper right x-coordinate, considering a given margin.
*
* @param margin a margin
* @return the upper right x-coordinate
*/
public float right(int margin) {
return urx - margin;
}
/**
* Returns the upper right y-coordinate, considering a given margin.
*
* @param margin a margin
* @return the upper right y-coordinate
*/
public float top(int margin) {
return ury - margin;
}
/**
* Returns the lower left y-coordinate, considering a given margin.
*
* @param margin a margin
* @return the lower left y-coordinate
*/
public float bottom(int margin) {
return lly + margin;
}
/**
* Returns the width of the rectangle.
*
* @return a width
*/
public float width() {
return urx - llx;
}
/**
* Returns the height of the rectangle.
*
* @return a height
*/
public float height() {
return ury - lly;
}
/**
* Swaps the values of urx and ury and of lly and llx in order to rotate the rectangle.
*
* @return a PdfRectangle
*/
public PdfRectangle rotate() {
return new PdfRectangle(lly, llx, ury, urx, 0);
}
public PdfRectangle transform(AffineTransform transform) {
float[] pts = {llx, lly, urx, ury};
transform.transform(pts, 0, pts, 0, 2);
float[] dstPts = {pts[0], pts[1], pts[2], pts[3]};
if (pts[0] > pts[2]) {
dstPts[0] = pts[2];
dstPts[2] = pts[0];
}
if (pts[1] > pts[3]) {
dstPts[1] = pts[3];
dstPts[3] = pts[1];
}
return new PdfRectangle(dstPts[0], dstPts[1], dstPts[2], dstPts[3]);
}
}