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。
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)。我已经完成了图像,我现在正试图制作这样的3个按钮。
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);
}
}
那么如何添加像图片中的按钮
你也可以告诉我,如果我把我的代码设置错了,因为我是java的新手。
感谢。
答案 0 :(得分:5)
我会为此而被打扰......
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
<强>更新强>
就我个人而言,我创建了一个自定义JPanel
,可以使用上面的GridBagLayout
绘制背景,然后为其添加按钮
<强>更新强>
这个问题的问题是&#34;它取决于&#34;
这取决于您希望如何实现实际按钮。因为你已经离开&#34;空白&#34;空间,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,但它不是我的项目。
如果您想使用JButton
(或任何其他Component
)之类的内容,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,并使用像GridBagLayout
这样的东西......
我道歉,我可能已经略微超过了,但我很开心。
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;
}
}
}
您也可以轻松地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。
查看Custom Painting和2D Graphics了解更多信息。
答案 1 :(得分:4)
我猜你没有将Button添加到JFrame
f.add(button)
答案 2 :(得分:1)
由于您需要与Swing按钮不同的按钮,为了简化操作,您可以在JPanel中绘制按钮(使用paintComponent方法和Java 2D)。每个JPanel都是一个按钮。他们,您将使用一些鼠标事件来检测点击次数等。另一种方法是做与背景相同的事情(几个带图像的JLabel)并在每个标签中注册鼠标事件。您也可以为按钮创建自己的外观,但这并不是那么简单。当然,您需要更改布局管理器以适合您的按钮。