Java 我想从一大堆颜色中挑选一种颜色
在这里,我创建了一个程序。我的主要方法是创建许多形状、长方体、三角形。。。我想 有一个按钮,如果我点击它,我可以从一大组颜色中选择一种颜色 这是仅包含以下框的主程序:Java 我想从一大堆颜色中挑选一种颜色,java,swing,Java,Swing,在这里,我创建了一个程序。我的主要方法是创建许多形状、长方体、三角形。。。我想 有一个按钮,如果我点击它,我可以从一大组颜色中选择一种颜色 这是仅包含以下框的主程序: import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Kaleidescope extends JFrame implements MouseListener, ActionListener, MouseMotionListe
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Kaleidescope extends JFrame implements MouseListener, ActionListener, MouseMotionListener {
Box b;
Box[] boxes; // 2-d array of Box objects, form a color pallet
int boxCount;
JButton boxButton;
int x1, y1; // mousePressed
int w1, z1; // mouseEntered
int mode = 1; // 1 = line, 2= boxes, 3 = oval, 4= text, 5 = SG, twoLines = 7.
public static void main(String[] args) {
System.out.println("hi there.");
new Kaleidescope();
setDefaultCloseOperation(EXIT_ON_CLOSE);
addMouseListener(this);
addMouseMotionListener(this);
boxes = new Box[20];
boxCount = 0;
setLayout(new FlowLayout());
boxButton = new JButton("Boxes");
add(boxButton);
boxButton.addActionListener(this);
setSize(new Dimension(500, 500));
setVisible(true);
}
// returns a random color
public Color randomColor() {
int red = (int) (Math.random() * 255);
int green = (int) (Math.random() * 255);
int blue = (int) (Math.random() * 255);
return new Color(red, green, blue);
}
public void mouseClicked(MouseEvent e) {
System.out.println("click at x=" + e.getX() + " y=" + e.getY());
// convert window coords to box array indexes.
// These were adjusted slightly after the video was made
// (no more flakiness, these are right on target).
int boxi = (e.getX() - 10) / 20; // convert mouse x to box index
int boxj = (e.getY() - 40) / 20;
System.out.println("click at boxi=" + boxi + " boxj=" + boxj);
// set extra box to the color that we clicked on
if (mode == 2) {
boxes[boxCount++] = new Box(e.getX(), e.getY(), randomColor());
}
repaint();
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == boxButton) {
mode = 2;
repaint();
}
}
public void mouseEntered(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void paint(Graphics g) {
super.paint(g);
for (int i = 0; i < boxCount; i++) {
boxes[i].drawMe(g);
}
}
}
这是另一节课
package kaleidescope;
public class Point {
int x;
int y;
public Point( int x1, int y1 ) {
x = x1; y = y1;
}
}
还有这个班
package kaleidescope;
import java.awt.*;
public abstract class Shape {
protected Color color;
abstract public void drawMe( Graphics g );
}
那我想要一个按钮,如果我点击它,我可以从一大组颜色中选择一种颜色?问号是否表示您不确定自己想要什么请提供可编译的代码!好的,我不知道怎么说清楚。但是我想从一大组颜色中挑选一种颜色,上面代码中的一些实际上与您的问题有关?为了做你想做的事,你尝试了什么?所以你在寻找一种制作颜色选择器的方法?谷歌是一个很好的起点。如果我没弄错你的问题,你是在找一个叫做颜色选择器的东西
package kaleidescope;
import java.awt.*;
public abstract class Shape {
protected Color color;
abstract public void drawMe( Graphics g );
}