org.jpedal.utils.repositories.generic.Vector_Rectangle_Int Maven / Gradle / Ivy

/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * Vector_Rectangle_Int.java
 * ---------------
 */

package org.jpedal.utils.repositories.generic;

/**
 * A generic class to create and manipulate the raw
 * x,y,w,h values for Swing/JavaFX rectangles.
 */
public class Vector_Rectangle_Int extends GUIVector_Rectangle {
    //holds the data
    private int[][] items = new int[max_size][4];

    //set size
    public Vector_Rectangle_Int(final int number) {
        max_size = number;
        items = new int[max_size][4];
    }

    public Vector_Rectangle_Int() {
    }

    /**
     * check the size of the array and increase if needed
     */
    private void checkSize(final int i) {
        if (i >= max_size) {
            final int old_size = max_size;
            max_size += increment_size;

            //allow for it not creating space
            if (max_size <= i) {
                max_size = i + increment_size + 2;
            }

            final int[][] temp = items;
            items = new int[max_size][4];
            System.arraycopy(temp, 0, items, 0, old_size);

            //increase size increase for next time
            increment_size = incrementSize(increment_size);
        }
    }


    /**
     * add an item
     */
    public synchronized void addElement(final int[] value) {
        checkSize(current_item);
        items[current_item] = value;
        current_item++;
    }

    /**
     * clear the array
     */
    public final void clear() {
        checkPoint = -1;
        //items = null;
        //holds the data
        //items = new Rectangle[max_size];
        if (current_item > 0) {
            for (int i = 0; i < current_item; i++) {
                items[i] = null;
            }
        } else {
            for (int i = 0; i < max_size; i++) {
                items[i] = null;
            }
        }
        current_item = 0;
    }

    /**
     * Returns two dimensional array
     * containing raw x,y,w,h data for
     * rectangle construction.
     */
    public final int[][] get() {
        return items;
    }

    /**
     * Returns an array containing x,y,w,h
     * of one of items[][] elements.
     */
    public final synchronized int[] elementAt(final int id) {
        if (id >= max_size) {
            return null;
        } else {
            final int[] rectParams = new int[4];
            System.arraycopy(items[id], 0, rectParams, 0, rectParams.length);
            return rectParams;
        }
    }

    public void trim() {

        final int[][] newItems = new int[current_item][4];

        System.arraycopy(items, 0, newItems, 0, current_item);

        items = newItems;
        max_size = current_item;
    }

}