制作一个按钮 - java [英] making a button - java
问题描述
好的，我知道之前已经问过这个问题，但我似乎无法让我的应用程序在其他人的帖子的帮助下工作。
Ok, i know that this question has been asked before, but i just can't seem to get my application to work with the help from other peoples posts.
我只是想制作一个带有我制作的图片的屏幕，然后是3个按钮（就像游戏菜单一样）。我已完成图像，我现在正试图制作这样的3个按钮。
I am just trying to make a screen with a picture i made and then 3 buttons (just like a game menu). I have done the image and i am now trying to make the 3 buttons like this.
我的代码目前是：
public class Test {
static int WIDTH = 700;
static int HEIGHT = 600;
public static void main(String[] args) {
JLabel label = new JLabel();
JFrame f = new JFrame();
JPanel panel = new JPanel();
JButton button = new JButton("hello again");
button.addActionListener ((ActionListener) new Action1());
label.setIcon(new ImageIcon("C:\\Users\\barney\\workspace\\game\\res\\background.jpg"));
f.add(panel);
f.add(label);
f.setVisible(true);
f.setDefaultCloseOperation(f.EXIT_ON_CLOSE);
f.setSize(WIDTH, HEIGHT);
f.setResizable(false);
f.setLocationRelativeTo(null);
f.setTitle("2d platformer v1.1");
f.setVisible(true);
}
}
那么如何在图片中添加按钮
So how would i add the buttons like in the picture
你也可以告诉我，如果我把我的代码设置错了，因为我是java新手。
also could you tell me if i have set my code out wrong as i am new to java.
谢谢。
推荐答案
我会为此而烦恼......
I'm going to be smacked around for this...
label.setLayout(new GridBagLayout());
GridBagConstraints gbc = GridBagConstraints();
gbc.insets = new Insets(4, 0, 4, 0);
gbc.gridwidth = GridBagConstraints.REMAINDER;
label.add(button, gbc);
// add the other buttons
更新
就个人而言，我会创建一个自定义的 JPanel ，它会绘制背景然后添加按钮，使用 GridBagLayout 从上面
Personally, I'd create a custom JPanel, that would paint the background and then add buttons to it, using the GridBagLayout from above
已更新
这个问题的问题是它取决于
The problem with this question is "it depends"
这取决于你想要如何实现实际的按钮。因为你留下了空白空格，我假设你打算在图像上渲染一些按钮。我个人会渲染一个完整的图像，然后添加一些普通的按钮，但这是你的项目而不是我的。
It depends on how you want to implement the actual buttons. Because you've left "blank" spaces, I assume you intend to render some buttons onto the image. I would personally, render a full image and then add some normal buttons onto, but it's your project not mine.
如果你想使用类似组件），您需要一个自定义布局管理器来帮助您将组件与您留下的空隙对齐。因此，我只是做了一个很好的背景，并使用类似 GridBagLayout 的原因......
If you wanted to use something like JButton (or any other Component), you would need a custom layout manager to help you align the components with gaps you have left. Hence the reason I would simply do a nice background and use something like GridBagLayout instead...
我道歉，我可能稍微超过了，但我很开心。
I apologize, I may have gone slightly over board, but I was having fun.
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.RadialGradientPaint;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class ButtonImage {
public static void main(String[] args) {
new ButtonImage();
}
public ButtonImage() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new MenuPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public static class MenuPane extends JPanel {
public static final Rectangle NEW_GAME_BOUNDS = new Rectangle(221, 157, 262, 85);
public static final Rectangle LOAD_GAME_BOUNDS = new Rectangle(221, 276, 262, 85);
public static final Rectangle EXIT_GAME_BOUNDS = new Rectangle(221, 396, 262, 85);
private BufferedImage img;
private Rectangle selectedBounds;
public MenuPane() {
try {
img = ImageIO.read(getClass().getResource("/vtr1a.jpg"));
} catch (IOException ex) {
ex.printStackTrace();
}
MouseAdapter mouseHandler = new MouseAdapter() {
@Override
public void mouseMoved(MouseEvent e) {
if (getNewGameBounds().contains(e.getPoint())) {
System.out.println("in new");
selectedBounds = getNewGameBounds();
} else if (getLoadGameBounds().contains(e.getPoint())) {
System.out.println("in load");
selectedBounds = getLoadGameBounds();
} else if (getExitGameBounds().contains(e.getPoint())) {
System.out.println("in exit");
selectedBounds = getExitGameBounds();
} else {
selectedBounds = null;
}
repaint();
}
@Override
public void mouseClicked(MouseEvent e) {
if (getNewGameBounds().contains(e.getPoint())) {
System.out.println("New Game");
} else if (getLoadGameBounds().contains(e.getPoint())) {
System.out.println("Load Game");
} else if (getExitGameBounds().contains(e.getPoint())) {
System.out.println("Exit Game");
}
}
};
addMouseListener(mouseHandler);
addMouseMotionListener(mouseHandler);
}
@Override
public Dimension getPreferredSize() {
return img == null ? super.getPreferredSize() : new Dimension(img.getWidth(), img.getHeight());
}
protected Point getImageOffset() {
Point p = new Point();
if (img != null) {
p.x = (getWidth() - img.getWidth()) / 2;
p.y = (getHeight() - img.getHeight()) / 2;
}
return p;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (img != null) {
Graphics2D g2d = (Graphics2D) g.create();
Point p = getImageOffset();
g2d.drawImage(img, p.x, p.y, this);
drawText(g2d, "New Game", getNewGameBounds());
drawText(g2d, "Load Game", getLoadGameBounds());
drawText(g2d, "Exit Game", getExitGameBounds());
g2d.dispose();
}
}
protected void drawText(Graphics2D g2d, String text, Rectangle bounds) {
FontMetrics fm = g2d.getFontMetrics();
g2d.setColor(Color.GRAY);
if (selectedBounds != null) {
if (bounds.contains(selectedBounds)) {
RadialGradientPaint rpg = new RadialGradientPaint(
new Point(bounds.x + (bounds.width / 2), bounds.y + (bounds.height / 2)),
Math.min(bounds.width, bounds.height),
new float[]{0f, 1f},
new Color[]{new Color(252, 180, 42), new Color(97, 205, 181)}
);
g2d.setPaint(rpg);
RoundRectangle2D fill = new RoundRectangle2D.Float(bounds.x, bounds.y, bounds.width, bounds.height, 22, 22);
g2d.fill(fill);
g2d.setColor(Color.WHITE);
}
}
g2d.drawString(
text,
bounds.x + ((bounds.width - fm.stringWidth(text)) / 2),
bounds.y + ((bounds.height - fm.getHeight()) / 2) + fm.getAscent());
}
protected Rectangle getNewGameBounds() {
return getButtonBounds(NEW_GAME_BOUNDS);
}
protected Rectangle getLoadGameBounds() {
return getButtonBounds(LOAD_GAME_BOUNDS);
}
protected Rectangle getExitGameBounds() {
return getButtonBounds(EXIT_GAME_BOUNDS);
}
protected Rectangle getButtonBounds(Rectangle masterBounds) {
Rectangle bounds = new Rectangle(masterBounds);
Point p = getImageOffset();
bounds.translate(p.x, p.y);
return bounds;
}
}
}
你可以，同样轻松，为每个按钮使用单独的图像，而不是渲染文本/图形，在所需位置渲染图像。
You could, just as easily, use separate images for each button and instead of rendering the text/graphics, render a image at the required position.
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