Rectangle.java

/**
 *	Copyright (C) 2012   The FreeCol-Android Team
 *
 *  This file is part of FreeCol-Android.
 *
 *  FreeCol-Android is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  FreeCol is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with FreeCol-Android.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.freecolandroid.repackaged.java.awt;

import android.graphics.Rect;

public class Rectangle {

	public int x;
	
	public int y;

	public int width;
	
	public int height;
	
	private Rect helper = new Rect();

	public Rectangle() {
	}

	public Rectangle(int x, int y, int width, int height) {
		this.x = x;
		this.y = y;
		this.width = width;
		this.height = height;
	}

	public Rectangle(Rect rect) {
		this.x = rect.left;
		this.y = rect.top;
		this.width = rect.right - rect.left;
		this.height = rect.bottom - rect.top;
	}

	public void add(int x, int y) {
		// Extends Left
		if (x < this.x) {
			width += Math.abs(this.x - x);
			this.x = x;
		}
		// Extend Up
		if (y < this.y) {
			height += Math.abs(this.y - y);
			this.y = y;
		}
		// Extend Right
		if (x >= (this.x + width)) {
			width += Math.abs(x - (x + width - 1));
		}
		// Extend Down
		if (y >= (this.y + height)) {
			height += Math.abs(y - (y + height - 1));
		}
	}

	public boolean contains(int x, int y) {
		updateHelper();
		return helper.contains(x, y);
	}

	public boolean contains(Point point) {
		return contains(point.x, point.y);
	}

	public boolean intersects(Rectangle clipArea) {
		updateHelper();
		clipArea.updateHelper();
		return helper.intersect(clipArea.helper);
	}

	public boolean isEmpty() {
		updateHelper();
		return helper.isEmpty();
	}

	public void setBounds(int x, int y, int width, int height) {
		this.x = x;
		this.y = y;
		this.width = width;
		this.height = height;
	}

	public Rectangle union(Rectangle r2) {
		updateHelper();
		r2.updateHelper();
		helper.union(r2.helper);
		return new Rectangle(helper);
	}

	private void updateHelper() {
		helper.set(x, y, x + width, y + height);
	}
}