怎样用AWT画30×30个小格子？每个格子10个像素大小。

[benro]

怎样用AWT画30×30个小格子？每个格子10个像素大小。

[hivvyeah]

 public void paint(Graphics g) {

 super.paint(g);
 Graphics2D g2 = (Graphics2D) g;

 g2.setStroke(new BasicStroke(1.0f));  //笔宽

 GradientPaint redtowhite = new GradientPaint(x,y,Color.RED,x+rectWidth-5, y,Color.white);
 g2.setPaint(redtowhite);  //画渐变的

 

 int orgX = 10;
 int orgY = 10;
        
        //水平线31条
  for(int i = 0; i <31; i++)
  {
            g2.draw(new Line2D.Double(orgX, orgY+i*10, orgX + 30*10, orgY+i*10));
  }
        
        //垂直线31条
  for(int i = 0; i <31; i++)
  {
            g2.draw(new Line2D.Double(orgX+i*10, orgY, orgX+i*10 , orgY+ 30*10));
  }


 

[hivvyeah]

上面的效果图

[hivvyeah]

记得给分啊~~~

[benro]

我不是这个意思啊，我要的是独立的格子，每个格子我要可以单独setBackground()的，怎么弄啊？
肯定给分的～！！

[kulin3422]

想做期盼么？
画啊
很简单的

[hivvyeah]

你想怎样setBackground呢? (我的意思是,要做个方法setBackground(int row, int column, Color wantedColor), 来对某方块设颜色吗?)

有g2.fill(new RectAngle(...))

如果能用Swing, 用JLabel来排列也可以啊.

没达到你的要求, 不要分了

[Dan1980]

import java.awt.*;

public class ColorfulGrid extends Frame {
	
	private int size = 30;
	private int unit = 10;
	private int gap = 1;
	private Panel[] colorSpots = new Panel[size*size];
	private Color[] builtinColors = {
			Color.RED, Color.GREEN, Color.BLUE,
			Color.CYAN, Color.MAGENTA, Color.ORANGE,
			Color.WHITE, Color.BLACK, Color.GRAY, Color.LIGHT_GRAY };
	private java.util.Random random = new java.util.Random();
	
	public ColorfulGrid() {
		setSize(size*(unit+gap), size*(unit+gap));
		setResizable(false);
		setLayout(new GridLayout(size, size, gap, gap));
		for (int i = 0; i < colorSpots.length; i++) {
			colorSpots[i] = new Panel();
			add(colorSpots[i]);
			colorSpots[i].setBackground(builtinColors[random.nextInt(builtinColors.length)]);
		}
	}
	
	/*
	 * 为指定位置的色块设置颜色
	 */
	public void setColorFor(int row, int col, Color c) {
		if (row < 0 || row >= size || col < 0 || col >= size) return;
		colorSpots[row*size+col].setBackground(c);
	}

	public static void main(String[] args) {
		new ColorfulGrid().setVisible(true);
	}

}

[qybao]

借用一下LS的代码

final static int MAX_ROW = 30;
final static int MAX_COL = 30;
final static int CELL_DIV = 10;
private Color[][] color = new Color[MAX_ROW][MAX_COL]; //定义一个颜色数组成员
{ for (int i=0; i<MAX_ROW; i++)
for (int j=0; j<MAX_CELL; j++)
//color[i][j] = your_panel.getBackground(); //缺省颜色是你的Panel的背景色
color[i][j] = new Color((int)(Math.random()*256), (int)(Math.random()*256), (int)(Math.random()*256)); //测试颜色
}

以上代码可以放到构造函数或者静态代码块

//设置格子的颜色
public void setCellColor(int row, int col, Color c) {
if (row<0 || row>MAX_ROW-1) return;
if (col<0 || col>MAX_COL-1) return;
color[row][col] = c;
}

public void paintComponent(Graphics g) {

super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;

int penW = 1;
g2.setStroke(new BasicStroke((float)penW)); //笔宽

g2.setColor(Color.black); //黑色画边框

int orgX = 10;
int orgY = 10;
int lenX = MAX_ROW * CELL_DIV;
int lenY = MAX_COL * CELL_DIV;

//水平线31条
for(int i = 0; i <MAX_ROW+1; i++)
{
g2.draw(new Line2D.Double(orgX, orgY+i*CELL_DIV, orgX + lenX, orgY+i*CELL_DIV));
}

//垂直线31条
for(int i = 0; i <MAX_COL+1; i++)
{
g2.draw(new Line2D.Double(orgX+i*CELL_DIV, orgY, orgX+i*CELL_DIV , orgY+ lenY));
}


// 填充格子颜色
for (int i=0; i<MAX_ROW; i++) {
for (int j=0; j<MAX_COL; j++) {
g2.setColor(color[i][j]); //设置格子颜色
g2.fillRect(orgX+j*CELL_DIV+1, orgY+i*CELL_DIV, CELL_DIV-penW*2, CELL_DIV-penW*2);
}
}