org.mozilla.gecko.gfx.IntRect.java Source code

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Here is the source code for org.mozilla.gecko.gfx.IntRect.java

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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Android code.
 *
 * The Initial Developer of the Original Code is Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2009-2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Patrick Walton <pcwalton@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

package org.mozilla.gecko.gfx;

import org.mozilla.gecko.gfx.IntPoint;
import org.json.JSONException;
import org.json.JSONObject;

public class IntRect implements Cloneable {
    public final int x, y, width, height;

    public IntRect(int inX, int inY, int inWidth, int inHeight) {
        x = inX;
        y = inY;
        width = inWidth;
        height = inHeight;
    }

    public IntRect(JSONObject json) {
        try {
            x = json.getInt("x");
            y = json.getInt("y");
            width = json.getInt("width");
            height = json.getInt("height");
        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public Object clone() {
        return new IntRect(x, y, width, height);
    }

    @Override
    public boolean equals(Object other) {
        if (!(other instanceof IntRect))
            return false;
        IntRect otherRect = (IntRect) other;
        return x == otherRect.x && y == otherRect.y && width == otherRect.width && height == otherRect.height;
    }

    @Override
    public String toString() {
        return "(" + x + "," + y + "," + width + "," + height + ")";
    }

    public IntPoint getOrigin() {
        return new IntPoint(x, y);
    }

    public IntPoint getCenter() {
        return new IntPoint(x + width / 2, y + height / 2);
    }

    public int getRight() {
        return x + width;
    }

    public int getBottom() {
        return y + height;
    }

    /** Contracts a rectangle by the given number of units in each direction, from the center. */
    public IntRect contract(int lessWidth, int lessHeight) {
        float halfWidth = width / 2.0f - lessWidth, halfHeight = height / 2.0f - lessHeight;
        IntPoint center = getCenter();
        return new IntRect((int) Math.round((float) center.x - halfWidth),
                (int) Math.round((float) center.y - halfHeight), (int) Math.round(halfWidth * 2.0f),
                (int) Math.round(halfHeight * 2.0f));
    }
}