调整框架上的组件大小调整Java大小
在调整GUI的大小时,尝试调整GUI中的组件时遇到了一些问题。现在,当我调整GUI的大小时,组件的大小不会改变,而是保持我设置的静态大小。当我调整GUI的大小超过显示它们所需的最小大小时,它们将不再显示。我希望它们在调整GUI大小时调整大小并保持纵横比 以下是我为GUI编写的代码:调整框架上的组件大小调整Java大小,java,swing,user-interface,resize,gridbaglayout,Java,Swing,User Interface,Resize,Gridbaglayout,在调整GUI的大小时,尝试调整GUI中的组件时遇到了一些问题。现在,当我调整GUI的大小时,组件的大小不会改变,而是保持我设置的静态大小。当我调整GUI的大小超过显示它们所需的最小大小时,它们将不再显示。我希望它们在调整GUI大小时调整大小并保持纵横比 以下是我为GUI编写的代码: import java.applet.*; import java.awt.*; import java.awt.event.*; import java.awt.image.BufferedImage; impor
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.text.*;
import javax.swing.text.html.*;
public class DraftGUI implements MouseListener {
private JPanel jpPack;
private JPanel jpCards;
private JPanel jpInfo;
private JPanel jpChat;
private TextField tf;
private StyledDocument doc;
private JTextPane tp;
private JScrollPane sp;
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
e.getComponent().setVisible(false);
}
private Client client;
public GUI(Client client) throws IOException {
JFrame frame = new JFrame("Draft");
//set the size to fullscreen to start
frame.setSize(Toolkit.getDefaultToolkit().getScreenSize().width, Toolkit.getDefaultToolkit().getScreenSize().height);
//set the content pane, we'll add everything to it and then add it to the frame
JPanel contentPane = new JPanel();
contentPane.setSize(Toolkit.getDefaultToolkit().getScreenSize().width, Toolkit.getDefaultToolkit().getScreenSize().height);
contentPane.setLayout(new GridBagLayout());
//creates some panels with some default values for now
JPanel jpCards = new JPanel(new BorderLayout());
jpCards.setOpaque(true); //ensures it paints every pixel
jpCards.setBackground(Color.BLUE);
JPanel jpInfo = new JPanel();
jpInfo.setOpaque(true);
jpInfo.setBackground(Color.GREEN);
JPanel jpPack = new JPanel(new GridBagLayout());
jpPack.setOpaque(true);
jpPack.setBackground(Color.RED);
//grab some info to make the JTextPane and make it scroll
this.client = client;
tf = new TextField();
doc = new DefaultStyledDocument();
tp = new JTextPane(doc);
tp.setEditable(false);
tf.addActionListener(this.client);
sp = new JScrollPane(tp);
//adding the quantities to the chat panel
JPanel jpChat = new JPanel();
jpChat.setLayout(new BorderLayout());
jpChat.add("North", tf);
jpChat.add("Center", sp);
//a new GridBagConstraints used to set the properties/location of the panels
GridBagConstraints c = new GridBagConstraints();
//adding some panels to the content pane
//set it to start from the top left of the quadrant if it's too small
c.anchor = GridBagConstraints.FIRST_LINE_START;
c.fill = GridBagConstraints.BOTH; //set it to fill both vertically and horizontally
c.gridx = 0; //set it to quadrant x=0 and
c.gridy = 0; //set it to quadrant y=0
c.weightx = 0.7;
c.weighty = 0.3;
contentPane.add(jpCards, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 0.3;
c.weighty = 0.3;
contentPane.add(jpInfo, c);
c.gridx = 0;
c.gridy = 1;
c.weightx = 0.7;
c.weighty = 0.7;
contentPane.add(jpPack, c);
c.gridx = 1;
c.gridy = 1;
c.weightx = 0.3;
c.weighty = 0.7;
contentPane.add(jpChat, c);
//set some necessary values
frame.setContentPane(contentPane);
frame.setLocationByPlatform(true);
frame.setVisible(true);
//This code works for adding an Image
//need to learn how to specify a path not dependent on the specific users's machine
//this is not a high priority for now though
GridBagConstraints d = new GridBagConstraints();
d.gridx = 0;
d.gridy = 0;
ImageLabel imageLabel1 = new ImageLabel("path-to-file");
imageLabel1.setPreferredSize(new Dimension(223, 310));
jpPack.add(imageLabel1, d);
ImageLabel imageLabel2 = new ImageLabel("path-to-file");
imageLabel2.setPreferredSize(new Dimension(223, 310));
ImageLabel imageLabel3 = new ImageLabel("path-to-file");
imageLabel3.setPreferredSize(new Dimension(223, 310));
d.gridx = 1;
jpPack.add(imageLabel2, d);
d.gridy = 1;
jpPack.add(imageLabel3, d);
imageLabel1.addMouseListener(this);
imageLabel2.addMouseListener(this);
imageLabel3.addMouseListener(this);
//223, 310 are the aspect values for a card image, width, height
//these need to be maintained as the GUI size changes
}
}
class ImageLabel extends JLabel {
Image image;
ImageObserver imageObserver;
// constructor with filename
ImageLabel(String filename) {
ImageIcon icon = new ImageIcon(filename);
image = icon.getImage();
imageObserver = icon.getImageObserver();
}
// constructor with icon
ImageLabel(ImageIcon icon) {
image = icon.getImage();
imageObserver = icon.getImageObserver();
}
// overload setIcon method
void setIcon(ImageIcon icon) {
image = icon.getImage();
imageObserver = icon.getImageObserver();
}
// overload paint()
public void paint( Graphics g ) {
super.paint( g );
g.drawImage(image, 0 , 0 , getWidth() , getHeight() , imageObserver);
}
}
由于某些原因,框架的组件没有默认的调整大小属性,因此当框架调整大小时,组件不会执行任何操作。我不确定我做错了什么或错过了什么,但很明显我遗漏了什么
另外,如果有人知道的话,图像标签会占用周围额外的空间。默认情况下,填充设置为0,所以我不确定为什么它会在它们周围创建一个边框
谢谢
为纪尧姆编辑:
我知道如果我想独立运行main,它是必需的,它当前是另一个应用程序的一部分,并且可以从中单独调用。为了完整性,在没有main的情况下发布它可能不是最好的决定,但无论如何,这不会是一个大问题
您的代码删除了实际显示图片的部分。“文件路径”应替换为实际的图像文件路径,以便显示图像。当它仅仅是文本时,很难看到手头的问题
当正确显示图像并尝试调整整个GUI的大小时,您会注意到图像没有收缩。它保持其首选大小,并且在变小时会出现问题。在我的代码中,当它不能显示至少首选大小时,它会完全停止显示图片。在您的代码中,当图片缩小时,它会切断部分图片
我想让它实际调整包含图片的JLabel的大小,这样随着GUI的调整,图像也会随之调整大小。这是必要的,图像收缩相应的为我的程序。用户最终将拥有基于单击图像的功能,因此仅显示部分图像或部分图像根本不行
请再次尝试您的代码/我的代码,并复制我遇到的问题,使用图片进行测试,以便我们能够找到正确的解决方案。谢谢
JFrame.setVisible(true)
应该是您调用的最后一行GridBagLayout
可以根据帧大小调整组件的大小,只要使用weightx/weighty
和fill
anchor
和/或fill
frame.pack()
正确调整框架大小setExtendedState()
最大化帧import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.TextField;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.text.DefaultStyledDocument;
import javax.swing.text.StyledDocument;
public class DraftGUI implements MouseListener {
private static final String IMAGE_URL = "http://images.paramountbusinessjets.com/space/spaceshuttle.jpg";
private JPanel jpPack;
private JPanel jpCards;
private JPanel jpInfo;
private JPanel jpChat;
private TextField tf;
private StyledDocument doc;
private JTextPane tp;
private JScrollPane sp;
@Override
public void mousePressed(MouseEvent e) {
}
@Override
public void mouseReleased(MouseEvent e) {
}
@Override
public void mouseEntered(MouseEvent e) {
}
@Override
public void mouseExited(MouseEvent e) {
}
@Override
public void mouseClicked(MouseEvent e) {
}
public DraftGUI() throws MalformedURLException {
final JFrame frame = new JFrame("Draft");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// set the content pane, we'll add everything to it and then add it to the frame
JPanel contentPane = new JPanel();
contentPane.setLayout(new GridBagLayout());
// creates some panels with some default values for now
JPanel jpCards = new JPanel(new BorderLayout());
jpCards.setBackground(Color.BLUE);
JPanel jpInfo = new JPanel();
jpInfo.setBackground(Color.GREEN);
JPanel jpPack = new JPanel(new GridBagLayout());
jpPack.setBackground(Color.RED);
// grab some info to make the JTextPane and make it scroll
tf = new TextField();
doc = new DefaultStyledDocument();
tp = new JTextPane(doc);
tp.setEditable(false);
sp = new JScrollPane(tp);
// adding the quantities to the chat panel
JPanel jpChat = new JPanel();
jpChat.setLayout(new BorderLayout());
jpChat.add("North", tf);
jpChat.add("Center", sp);
// a new GridBagConstraints used to set the properties/location of the panels
GridBagConstraints c = new GridBagConstraints();
// adding some panels to the content pane
// set it to start from the top left of the quadrant if it's too small
c.anchor = GridBagConstraints.FIRST_LINE_START;
c.fill = GridBagConstraints.BOTH; // set it to fill both vertically and horizontally
c.gridx = 0; // set it to quadrant x=0 and
c.gridy = 0; // set it to quadrant y=0
c.weightx = 0.7;
c.weighty = 0.3;
contentPane.add(jpCards, c);
c.gridx = 1;
c.gridy = 0;
c.weightx = 0.3;
c.weighty = 0.3;
contentPane.add(jpInfo, c);
c.gridx = 0;
c.gridy = 1;
c.weightx = 0.7;
c.weighty = 0.7;
contentPane.add(jpPack, c);
c.gridx = 1;
c.gridy = 1;
c.weightx = 0.3;
c.weighty = 0.7;
contentPane.add(jpChat, c);
// set some necessary values
frame.setContentPane(contentPane);
frame.setLocationByPlatform(true);
// This code works for adding an Image
// need to learn how to specify a path not dependent on the specific users's machine
// this is not a high priority for now though
GridBagConstraints d = new GridBagConstraints();
d.weightx = 1.0;
d.weighty = 1.0;
d.fill = GridBagConstraints.BOTH;
d.gridx = 0;
d.gridy = 0;
ImageLabel imageLabel1 = new ImageLabel(new ImageIcon(new URL(IMAGE_URL)));
jpPack.add(imageLabel1, d);
ImageLabel imageLabel2 = new ImageLabel(new ImageIcon(new URL(IMAGE_URL)));
d.gridx++;
jpPack.add(imageLabel2, d);
ImageLabel imageLabel3 = new ImageLabel(new ImageIcon(new URL(IMAGE_URL)));
d.gridy++;
jpPack.add(imageLabel3, d);
imageLabel1.addMouseListener(this);
imageLabel2.addMouseListener(this);
imageLabel3.addMouseListener(this);
frame.pack();
// 223, 310 are the aspect values for a card image, width, height
// these need to be maintained as the GUI size changes
frame.setExtendedState(frame.getExtendedState() | JFrame.MAXIMIZED_BOTH);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
try {
new DraftGUI();
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
});
}
public static class ImageLabel extends JPanel {
private static int counter = 1;
private ImageIcon icon;
private int id = counter++;
public ImageLabel(ImageIcon icon) {
super();
setOpaque(false);
this.icon = icon;
}
@Override
public Dimension getPreferredSize() {
return new Dimension(icon.getIconWidth(), icon.getIconHeight());
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
double zoom = Math.min((double) getWidth() / icon.getIconWidth(), (double) getHeight() / icon.getIconHeight());
int width = (int) (zoom * icon.getIconWidth());
int height = (int) (zoom * icon.getIconHeight());
g.drawImage(icon.getImage(), (getWidth() - width) / 2, (getHeight() - height) / 2, width, height, this);
g.setFont(g.getFont().deriveFont(36.0f));
g.drawString(String.valueOf(id), getWidth() / 2, getHeight() / 2);
}
}
}
您需要使用不同的布局管理器,而不是网格袋布局,因为它在尽可能尊重首选尺寸。在我看来,我不能推荐一个。目前的问题是如何确定“纵横比”,请看我的最新答案。your’s和@GuillaumePolet s之间的一个区别是,您主动缩短了标签的自调整大小:一般规则是永远不要打电话。这就是说:一个图像有一个固定的大小,如果你想缩放它,你必须实现这个缩放。再看一下,一些问题:a)imageLabel。setIcon(ImageIcon)不是覆盖标签。setIcon(Icon)b)在swing中,覆盖paintComponent而不是paints。你解决了这个问题吗?请随意回答您自己的问题。我尝试了代码,但它不起作用。至少,它和我已经拥有的没有什么不同。权重和填充属性已经设置好了,所以您所做的只是添加一个setVisible和一个main(这是不必要的,我用其他方式调用它)。您还取出了ImageLabel的代码,我添加了该代码,以使图片在面板内自行调整大小。还有其他想法吗?@MichaelYousef对我来说很有效。我删除了所有不相关的部分,并添加了一个
main
(这是基本的!),这实际上是您工作的一部分:只显示必要的内容,并提供一个“可运行”的示例(请参见什么是一个示例)。如果它对你不起作用,请专注于解释什么不起作用以及你会期望什么。我更新了原始帖子以反映我的需要,因为我没有足够的空间放在这里。非常感谢纪尧姆,代码工作起来很有魅力。我仍然要做一些最大和最小尺寸的事情,但那应该不会太糟糕。看起来我们之前的页面有点不对劲。它的大小很好,我非常激动。再次感谢你。@MichaelYousef没问题。很高兴我能帮助你。