graphicshapeicon.java

使用java application 的共享白板系统

import javax.swing.*;
import java.awt.*;

public class GraphicShapeIcon implements Icon {
	public GraphicShapeIcon(int shape) {
		this.shape = shape;
	}

	public GraphicShapeIcon(int shape, int fullWidth, int fullHeight) {
		this.shape = shape;
		this.fullWidth = fullWidth;
		this.fullHeight = fullHeight;
		this.width = fullWidth - 2 * PAD;
		this.height = fullHeight - 2 * PAD;
		this.arcSize = fullWidth/2;
	}

	// Icon interface
	public int getIconWidth() {
		return fullWidth;
	}

	public int getIconHeight() {
		return fullHeight;
	}

	public void paintIcon(Component comp, Graphics g, int x, int y) {
		Color c = g.getColor();
		g.translate(x + PAD, y + PAD);
		g.setColor(Color.black);

		switch(shape) {
		case GraphicOps.DRAWN_LINE:
			g.drawLine(0, 0, width - 1, height - 1);
			break;
			
		case GraphicOps.DRAWN_RECT:
			g.drawRect(0, 0, width - 2, height - 2);
			break;

		case GraphicOps.DRAWN_ROUND_RECT:
			g.drawRoundRect(0, 0, width - 2, height - 2, arcSize, arcSize);
			break;

		case GraphicOps.FILLED_RECT:
			g.fillRect(0, 0, width - 1, height - 1);
			break;

		case GraphicOps.FILLED_ROUND_RECT:
			g.fillRoundRect(0, 0, width - 1, height - 1, arcSize, arcSize);
			break;

		case GraphicOps.DRAWN_OVAL:
			g.drawOval(0, height/4, width, height/2);
			break;

		case GraphicOps.FILLED_OVAL:
			g.fillOval(0, height/4, width, height/2);
			break;
		}

		g.setColor(c);
		g.translate(-(x + PAD), -(y + PAD));
	}
	
	private int shape;

	// Constants
	public static final int FULLWIDTH = 32;
	public static final int FULLHEIGHT = 32;
	public static final int PAD = 2;
	public static final int WIDTH = FULLWIDTH - 2 * PAD;
	public static final int HEIGHT = FULLHEIGHT - 2 * PAD;
	public static final int ARC_SIZE = FULLWIDTH/2;

	// Sizes for this instance
	private int fullWidth = FULLWIDTH;
	private int fullHeight = FULLHEIGHT;
	private int width = WIDTH;
	private int height = HEIGHT;
	private int arcSize = ARC_SIZE;
}