Java Swing JPanel里面的JPanel里面JScrollPane大小调整

时间：2014-11-30 22:53:57

标签： java swing size jscrollpane jlabel

我正在创建一个程序，它将包含一个MainFrame，其中包含一个顶部的面板，它包含两个并排的按钮（有点像一个非常独特的工具栏），然后在下面将是左侧的主面板（flipPanel）区域右边的另一个面板将是一个表单（flipFormPanel）。 flipPanel位于名为scrollPane的滚动窗格内，scrollPane位于MainFrame内的左侧区域。表单中的项目将被传递到名为itemPanel的新面板中，每次按下“确定”按钮时，该面板将被放置在flipPanel中。我希望itemPanel跨越flipPanel的宽度，但只有大约100像素高。

我无法让scrollPane填充MainFrame的左侧区域。在scrollPane填充此区域后，我需要flipPanel来填充scrollPane，然后使用scrollPane的整个宽度添加itemPanel，但只有100像素高。

表单flipFormPanel也没有按照我的意愿调整大小。它需要宽250像素，并且具有从工具栏底部到MainFrame底部的高度。

我不确定为什么scrollPane和flipFormPanel没有在MainFrame中正确调整大小，并且想知道你们是否可以帮助我。我是Swing的新手，我还在学习，所以如果你有任何指示，请不要阻止它们。

以下是我希望最终定位的图片，以防万一我没有充分解释：https://www.dropbox.com/s/nrqy7bsaabyqip5/FlipProgramLayout.png?dl=0

这是MainFrame：

import java.awt.CardLayout;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;

import javax.swing.JFrame;
import javax.swing.JPanel;


public class MainFrame extends JFrame {

private ToolBar toolBar;
private FlipFormPanel flipFormPanel;
private LogFormPanel logFormPanel;
private FlipPanel flipPanel;
private LogPanel logPanel;
private MenuBarPanel menuBar;

private JPanel panelCards;
private JPanel flipCard;
private JPanel logCard;
private JPanel formCards;
private JPanel flipFormCard;
private JPanel logFormCard;
final static String FPANEL = "Flip Panel";
final static String FFORM = "Flip Form";
final static String LPANEL = "Log Panel";
final static String LFORM = "Log Form";


public MainFrame() {
    super("Flipping Log");





    setSize(960, 540);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);

    toolBar = new ToolBar();
    flipFormPanel = new FlipFormPanel();
    logFormPanel = new LogFormPanel();
    flipPanel = new FlipPanel();
    flipPanel.setPreferredSize(new Dimension(500, 500));
    logPanel = new LogPanel();
    logPanel.setPreferredSize(new Dimension(500, 500));

    createCards();
    layoutComponents();



    // ToolBar to Switch Panels
    toolBar.choosePanel(new PanelListener() {
        public void panelChosen(String panel) {
            if(panel.equals("Current Flips")) {
                showCurrentFlips();
            }
            else if(panel.equals("Flipping Log")) {
                showFlippingLog();
            }
        }
    });

    // Flip Form Panel
    flipFormPanel.setFlipFormListener(new FlipFormListener() {
        public void flipFormEventOccurred(FlipFormEvent e) {
            String item = e.getItem();
            String buyPrice = e.getBuyPrice();
            String sellPrice = e.getSellPrice();
            String quantity = e.getQuantity();
            String pcBuyPrice = e.getPcBuyPrice();
            String pcSellPrice = e.getPcSellPrice();

            flipPanel.addItemPanel(item, buyPrice, sellPrice, quantity,
                    pcBuyPrice, pcSellPrice);
            flipPanel.revalidate();
            flipPanel.repaint();
        }
    });

}

public void showCurrentFlips() {
    CardLayout c1 = (CardLayout)panelCards.getLayout();
    CardLayout c2 = (CardLayout)formCards.getLayout();
    c1.show(panelCards, "Flip Panel");
    c2.show(formCards, "Flip Form");
}

public void showFlippingLog() {
    CardLayout c1 = (CardLayout)panelCards.getLayout();
    CardLayout c2 = (CardLayout)formCards.getLayout();
    c1.show(panelCards, "Log Panel");
    c2.show(formCards, "Log Form");
}

public void createCards(){      
    // Create the panel that contains the cards
    panelCards = new JPanel(new CardLayout());
    panelCards.add(flipPanel, "Flip Panel");
    panelCards.add(logPanel, "Log Panel");
    Dimension dim = new Dimension();
    dim = panelCards.getPreferredSize();
    dim.width = 500;
    dim.height = 500;
    panelCards.setPreferredSize(dim);

    formCards = new JPanel(new CardLayout());
    formCards.add(flipFormPanel, "Flip Form");
    formCards.add(logFormPanel, "Log Form");
    dim = formCards.getPreferredSize();
    dim.width = 500;
    dim.height = 500;
    formCards.setPreferredSize(dim);
}

public void layoutComponents(){
    setLayout(new GridBagLayout());
    GridBagConstraints gc = new GridBagConstraints();
    gc.fill = GridBagConstraints.NONE;

    // First Row
    gc.gridy = 0;
    gc.weightx = 3.0;
    gc.weighty = 0;

    gc.gridwidth = 2;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(0, 0, 0, 0);
    add(toolBar, gc);

    // Second Row
    gc.gridy = 1;
    gc.weighty = 2.0;
    gc.gridwidth = 1;

    gc.gridx = 0;
    gc.weightx = 1.0;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(0, 0, 0, 0);
    add(panelCards, gc);

    gc.gridx = 1;
    gc.weightx = 0;
    gc.anchor = GridBagConstraints.NORTHEAST;
    gc.insets = new Insets(40, 0, 0, 0);
    add(formCards, gc);
}


}

这是FlipFormPanel：

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;

import javax.swing.BorderFactory;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class FlipFormPanel extends JPanel {

private JComboBox itemCombo;
private JFormattedTextField buyPriceField;
private JFormattedTextField sellPriceField;
private JFormattedTextField quantityField;
private JFormattedTextField pcBuyPriceField;
private JFormattedTextField pcSellPriceField;

private JLabel itemLabel;
private JLabel buyPriceLabel;
private JLabel sellPriceLabel;
private JLabel quantityLabel;
private JLabel pcBuyPriceLabel;
private JLabel pcSellPriceLabel;

private JButton okBtn;
private FlipFormListener flipFormListener;

public FlipFormPanel() {

    Dimension dim = getPreferredSize();
    dim.width = 250;
    dim.height = 500;
    setPreferredSize(dim);

    okBtn = new JButton("OK");

    setupLabels();
    setupComboBox();
    createFormat();
    createFormattedTextFields();
    setupOkButton();

    layoutComponents();
}

public void setupOkButton() {
    okBtn.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            String item = (String) itemCombo.getSelectedItem();
            String buyPrice = buyPriceField.getText();
            String sellPrice = sellPriceField.getText();
            String quantity = quantityField.getText();
            String pcBuyPrice = pcBuyPriceField.getText();
            String pcSellPrice = pcSellPriceField.getText();

            FlipFormEvent ev = new FlipFormEvent(this, item, buyPrice,
                    sellPrice, quantity, pcBuyPrice, pcSellPrice);

            if (flipFormListener != null) {
                flipFormListener.flipFormEventOccurred(ev);
            }

        }
    });
}

public void setFlipFormListener(FlipFormListener listener) {
    this.flipFormListener = listener;
}

public void setupLabels() {
    itemLabel = new JLabel("Item: ");
    buyPriceLabel = new JLabel("Buy Price: ");
    sellPriceLabel = new JLabel("Sell Price: ");
    quantityLabel = new JLabel("Quantity: ");
    pcBuyPriceLabel = new JLabel("PC Buy Price: ");
    pcSellPriceLabel = new JLabel("PC Sell Price: ");
}

public void setupComboBox() {
    itemCombo = new JComboBox();
    DefaultComboBoxModel itemModel = new DefaultComboBoxModel();
    itemModel.addElement("Bandos Helmet");
    itemModel.addElement("Bandos Chestplate");
    itemModel.addElement("Bandos Tassets");
    itemModel.addElement("Bandos Gloves");
    itemModel.addElement("Bandos Boots");
    itemModel.addElement("Bandos Warshield");
    itemModel.addElement("Armadyl Helmet");
    itemModel.addElement("Armadyl Chestplate");
    itemModel.addElement("Armadyl Chainskirt");
    itemModel.addElement("Armadyl Gloves");
    itemModel.addElement("Armadyl Boots");
    itemModel.addElement("Armadyl Crossbow");
    itemModel.addElement("Armadyl Buckler");
    itemModel.addElement("Hood of Subjugation");
    itemModel.addElement("Garb of Subjugation");
    itemModel.addElement("Gown of Subjugation");
    itemModel.addElement("Gloves of Subjugation");
    itemModel.addElement("Boots of Subjugation");
    itemModel.addElement("Ward of Subjugation");
    itemCombo.setModel(itemModel);
    itemCombo.setSelectedIndex(-1);
    itemCombo.setEditable(false);
}

private DecimalFormat priceFormat;
private DecimalFormat quantityFormat;
public void createFormat() {
    priceFormat = new DecimalFormat("###,##0.###k");
    quantityFormat = new DecimalFormat("###,###");
}

public void createFormattedTextFields() {
    buyPriceField = new JFormattedTextField(priceFormat);
    buyPriceField.setColumns(10);
    sellPriceField = new JFormattedTextField(priceFormat);
    sellPriceField.setColumns(10);
    quantityField = new JFormattedTextField(quantityFormat);
    quantityField.setColumns(10);
    pcBuyPriceField = new JFormattedTextField(priceFormat);
    pcBuyPriceField.setColumns(10);
    pcSellPriceField = new JFormattedTextField(priceFormat);
    pcSellPriceField.setColumns(10);
}

public void layoutComponents() {

    setLayout(new GridBagLayout());
    GridBagConstraints gc = new GridBagConstraints();
    gc.fill = GridBagConstraints.NONE;

    // First Row
    gc.gridy = 0;
    gc.weighty = 1;
    gc.gridwidth = 1;

    gc.weightx = 1;
    gc.gridx = 0;
    gc.anchor = GridBagConstraints.EAST;
    gc.insets = new Insets(3, 3, 10, 3);
    add(itemLabel, gc);

    gc.weightx = 1;
    gc.gridx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 10, 3);
    add(itemCombo, gc);

    // Second Row
    gc.gridy = 1;
    gc.weighty = 1;
    gc.gridwidth = 1;

    gc.weightx = 1;
    gc.gridx = 0;
    gc.anchor = GridBagConstraints.EAST;
    gc.insets = new Insets(3, 3, 3, 3);
    add(buyPriceLabel, gc);

    gc.weightx = 1;
    gc.gridx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 3, 3);
    add(buyPriceField, gc);

    // Third Row
    gc.gridy = 2;
    gc.weighty = 1;
    gc.gridwidth = 1;

    gc.weightx = 1;
    gc.gridx = 0;
    gc.anchor = GridBagConstraints.EAST;
    gc.insets = new Insets(3, 3, 3, 3);
    add(sellPriceLabel, gc);

    gc.weightx = 1;
    gc.gridx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 3, 3);
    add(sellPriceField, gc);

    // Fourth Row
    gc.gridy = 3;
    gc.weighty = 1;
    gc.gridwidth = 1;

    gc.weightx = 1;
    gc.gridx = 0;
    gc.anchor = GridBagConstraints.EAST;
    gc.insets = new Insets(3, 3, 3, 3);
    add(quantityLabel, gc);

    gc.weightx = 1;
    gc.gridx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 3, 3);
    add(quantityField, gc);

    // Fifth Row
    gc.gridy = 4;
    gc.weighty = 1;
    gc.gridwidth = 1;

    gc.weightx = 1;
    gc.gridx = 0;
    gc.anchor = GridBagConstraints.EAST;
    gc.insets = new Insets(3, 3, 3, 3);
    add(pcBuyPriceLabel, gc);

    gc.weightx = 1;
    gc.gridx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 3, 3);
    add(pcBuyPriceField, gc);

    // Sixth Row
    gc.gridy = 5;
    gc.weighty = 1;
    gc.gridwidth = 1;

    gc.weightx = 1;
    gc.gridx = 0;
    gc.anchor = GridBagConstraints.EAST;
    gc.insets = new Insets(3, 3, 3, 3);
    add(pcSellPriceLabel, gc);

    gc.weightx = 1;
    gc.gridx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 3, 3);
    add(pcSellPriceField, gc);

    // Seventh Row
    gc.gridy = 6;
    gc.weighty = 1;
    gc.gridwidth = 2;

    gc.weightx = 1;
    gc.anchor = GridBagConstraints.CENTER;
    gc.insets = new Insets(3, 3, 3, 3);
    add(okBtn, gc);

}

}

这是FlipPanel：

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class FlipPanel extends JPanel {

private JPanel mainPanel;
private JScrollPane scrollPane;
private ItemPanel itemPanel;
private JLabel lbl;

public FlipPanel() {

    Dimension dim = getPreferredSize();
    dim.width = 500;
    dim.height = 500;
    setPreferredSize(dim);
    setLayout(new BorderLayout());



    // lbl = new JLabel("Flip");
    // add(lbl);

    mainPanel = new JPanel();
    JScrollPane scrollPane = new JScrollPane(mainPanel);
    dim = scrollPane.getPreferredSize();
    dim.width = 500;
    dim.height = 500;
    scrollPane.setPreferredSize(dim);
    add(scrollPane, BorderLayout.CENTER);
    mainPanel.setLayout(new GridLayout(0, 1));

    ItemPanel firstItemPanel = new ItemPanel();
    dim = firstItemPanel.getPreferredSize();
    dim.width = 500;
    dim.height = 100;
    firstItemPanel.setPreferredSize(dim);

    mainPanel.add(firstItemPanel);



}

public void addItemPanel(String item, String buyPrice, String sellPrice,
        String quantity, String pcBuyPrice, String pcSellPrice) {
    this.itemPanel = new ItemPanel(item, buyPrice, sellPrice, quantity,
            pcBuyPrice, pcSellPrice);
    mainPanel.add(itemPanel);

    Dimension dim = this.itemPanel.getPreferredSize();
    dim.width = 500;
    dim.height = 100;
    this.itemPanel.setPreferredSize(dim);
}

public void addItemPanel() {
    this.itemPanel = new ItemPanel();
    mainPanel.add(itemPanel);
}

}

这是ItemPanel：

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;


public class ItemPanel extends JPanel {

private JTextArea textArea;
private String item;
private String buyPrice;
private String sellPrice;
private String quantity;
private String pcBuyPrice;
private String pcSellPrice;

private JLabel itemLabel;
private JLabel buyPriceLabel;
private JLabel sellPriceLabel;
private JLabel quantityLabel;
private JLabel pcBuyPriceLabel;
private JLabel pcSellPriceLabel;


public ItemPanel() {
    setLayout(new FlowLayout());

    Dimension dim = getPreferredSize();
    dim.height = 100;
    dim.width = 500;
    setPreferredSize(dim);

    itemLabel = new JLabel("ITEM: ");
    buyPriceLabel = new JLabel("BUY PRICE: ");
    sellPriceLabel = new JLabel("SELL PRICE: ");
    quantityLabel = new JLabel("QUANTITY: ");
    pcBuyPriceLabel = new JLabel("PC BUY PRICE: ");
    pcSellPriceLabel = new JLabel("PC SELL PRICE: ");

    add(itemLabel);
    add(buyPriceLabel);
    add(sellPriceLabel);
    add(quantityLabel);
    add(pcBuyPriceLabel);
    add(pcSellPriceLabel);
}

public ItemPanel(String item, String buyPrice,
        String sellPrice, String quantity, String pcBuyPrice,
        String pcSellPrice) {

    this.item = item;
    this.buyPrice = buyPrice;
    this.sellPrice = sellPrice;
    this.quantity = quantity;
    this.pcBuyPrice = pcBuyPrice;
    this.pcSellPrice = pcSellPrice;

    setLayout(new BorderLayout());

    Dimension dim = getPreferredSize();
    dim.height = 100;
    dim.width = 100;
    setPreferredSize(dim);

    itemLabel = new JLabel("ITEM: ");
    buyPriceLabel = new JLabel("BUY PRICE: ");
    sellPriceLabel = new JLabel("SELL PRICE: ");
    quantityLabel = new JLabel("QUANTITY: ");
    pcBuyPriceLabel = new JLabel("PC BUY PRICE: ");
    pcSellPriceLabel = new JLabel("PC SELL PRICE: ");

    add(itemLabel);
    add(buyPriceLabel);
    add(sellPriceLabel);
    add(quantityLabel);
    add(pcBuyPriceLabel);
    add(pcSellPriceLabel);
}

}

非常感谢你。

1 个答案:

答案 0 :(得分：1)

您需要使用大小提示和布局管理器的组合。

以下内容将每个面板设置为首选，最小尺寸设置为100，但使用GridBagLayout允许FlipPanel扩展超出这些基本限制...

Layout 

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.Scrollable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.LineBorder;

public class Test {

    public static void main(String[] args) {
        new Test();
    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new JScrollPane(new TestPane()));
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        private GridBagConstraints gbc;

        public TestPane() {
            setLayout(new GridBagLayout());
            gbc = new GridBagConstraints();
            gbc.gridwidth = GridBagConstraints.REMAINDER;
            gbc.anchor = GridBagConstraints.WEST;
            gbc.weightx = 1;
            gbc.weighty = 1;
            gbc.fill = GridBagConstraints.BOTH;
            add(createPanel("I be the flip panel"), gbc);
            gbc.weighty = 0;

            add(createPanel("Item Pane 01"), gbc, getComponentCount() - 1);
            add(createPanel("Item Pane 02"), gbc, getComponentCount() - 1);
            add(createPanel("Item Pane 03"), gbc, getComponentCount() - 1);
        }

        protected JPanel createPanel(String text) {
            return new SubPanel(text);
        }

        public class SubPanel extends JPanel {

            public SubPanel(String text) {
                setLayout(new BorderLayout());
                add(new JLabel(text));
                setBorder(new LineBorder(Color.RED));
            }

            @Override
            public Dimension getPreferredSize() {
                Dimension size = super.getPreferredSize();
                size.height = 100;
                return size;
            }

            @Override
            public Dimension getMinimumSize() {
                return getPreferredSize();
            }

        }

    }

}

有关详细信息，请参阅Laying Out Components Within a Container和How to Use GridBagLayout

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