package com.yaoyun.chess.entity;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Stroke;

import com.yaoyun.chess.util.FontUtil;

public class ChessBoard {

	/*
	 * 功能： 画出象棋的棋盘
	 */
	public void drawChess(Graphics g) {
		// 转成2D模式
		Graphics2D g2d = (Graphics2D) g;

		// 得到当前的画刷
		Stroke stroke = g2d.getStroke();
		g2d.setColor(Color.BLACK);

		// 设置新的画刷
		g2d.setStroke(new BasicStroke(4));
		g2d.drawRect(49, 49, 501, 561);

		g2d.setStroke(new BasicStroke(2));
		g2d.drawLine(60, 60, 540, 60);
		g2d.drawLine(60, 300, 540, 300);
		g2d.drawLine(60, 360, 540, 360);
		g2d.drawLine(60, 600, 540, 600);
		g2d.drawLine(60, 60, 60, 600);
		g2d.drawLine(540, 60, 540, 600);

		// 画黑炮的位置
		drawFlag(g2d, true, true, 120, 180);
		drawFlag(g2d, true, true, 480, 180);

		// 画红炮的位置
		drawFlag(g2d, true, true, 120, 480);
		drawFlag(g2d, true, true, 480, 480);

		// 画兵的位置
		drawFlag(g2d, false, true, 60, 240);
		for (int x = 180; x <= 480; x += 120) {
			drawFlag(g2d, true, true, x, 240);
		}
		drawFlag(g2d, true, false, 540, 240);

		// 画卒的位置
		drawFlag(g2d, false, true, 60, 420);
		for (int x = 180; x <= 480; x += 120) {
			drawFlag(g2d, true, true, x, 420);
		}
		drawFlag(g2d, true, false, 540, 420);

		// 将画刷复原
		g2d.setStroke(stroke);

		// 画棋盘格子
		g.setColor(Color.BLACK);
		for (int i = 1; i <= 10; i++) {
			if (i <= 9) {
				g.drawLine(60 * i, 60, 60 * i, 600);
			}
			g.drawLine(60, 60 * i, 540, 60 * i);
		}

		// 画河界
		g.setColor(new Color(216, 196, 160));
		g2d.fillRect(61, 301, 478, 58);
		g2d.setColor(Color.BLACK);
		g2d.setFont(FontUtil.myFont2);
		g2d.drawString("河", 135, 340);
		g2d.drawString("界", 435, 340);

		// 画交叉线
		g2d.drawLine(240, 60, 360, 180);
		g2d.drawLine(240, 180, 360, 60);
		g2d.drawLine(240, 480, 360, 600);
		g2d.drawLine(240, 600, 360, 480);
	}

	/*
	 * 功能：绘制指定棋子位置的边框 
	 * 参数leftFlag：是否绘制左边图形 
	 * 参数rightFlag：是否绘制右边图形 
	 * 参数x,y：表示绘制图形的中心坐标
	 */
	private void drawFlag(Graphics2D g2d, boolean leftFlag, boolean rightFlag,
			int x, int y) {
		if (leftFlag) {
			g2d.drawLine(x - 5, y - 20, x - 5, y - 5);
			g2d.drawLine(x - 5, y + 20, x - 5, y + 5);
			g2d.drawLine(x - 20, y - 5, x - 5, y - 5);
			g2d.drawLine(x - 20, y + 5, x - 5, y + 5);
		}
		if (rightFlag) {
			g2d.drawLine(x + 5, y - 20, x + 5, y - 5);
			g2d.drawLine(x + 5, y + 20, x + 5, y + 5);
			g2d.drawLine(x + 5, y + 5, x + 20, y + 5);
			g2d.drawLine(x + 5, y - 5, x + 20, y - 5);
		}
	}

}