0
如何修复JTable中的列使列始终可见？ 如果我第一次使用JViewport比第一次表格正确，但是当我第二次单击btn时，Jtable中的下一列被固定，每次都会继续。如何修复JTable中的列，以便该列始终可见
A
回答
1
您可以将您当前的方法与固定列示例show here进行比较。
0
-1
还有另外一种选择：
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.jdesktop.swingx.JXFindBar;
import org.jdesktop.swingx.JXTable;
import org.jdesktop.swingx.JXTableHeader;
import org.jdesktop.swingx.decorator.AbstractHighlighter;
import org.jdesktop.swingx.decorator.ColorHighlighter;
import org.jdesktop.swingx.decorator.HighlighterFactory;
import org.jdesktop.swingx.search.AbstractSearchable;
import org.jdesktop.swingx.search.AbstractSearchable.SearchResult;
/*** *
*
* @author Elie Levy Jan 04, 2009 GPL License
* (http://www.gnu.org/copyleft/gpl.html)
*
* @author kissjava 20090812 www.blogjava.net/kissjava
*/
public class FixTableManager extends JXTableHeader implements
PropertyChangeListener, KeyListener, ChangeListener {
private JXTable table;
private JScrollPane scrollPane;
private int col = 0;
// private Point point;
private FixedMouseListenter mouseListener;
public FixTableManager(JXTable table, JScrollPane scrollPane) {
super(table.getTableHeader().getColumnModel());
this.table = table;
this.scrollPane = scrollPane;
init();
}
private void init() {
mouseListener = new FixedMouseListenter();
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.setTableHeader(this);
this.addMouseListener(mouseListener);
table.addMouseListener(mouseListener);
scrollPane.addComponentListener(new ScrolPaneComponentListener());
table.setFillsViewportHeight(true);
}
@Override
public void paint(Graphics g) {
super.paint(g);
int division = mouseListener.getDivision();
if (division > 0) {
Rectangle r = getVisibleRect();
BufferedImage image = new BufferedImage(division, r.height,
BufferedImage.TYPE_INT_RGB);
Graphics g2 = image.getGraphics();
g2.setClip(0, 0, division, r.height);
g2.fillRect(0, 0, division, r.height);
super.paint(g2);
g.drawImage(image, r.x, r.y, division, r.height, null);
g2.dispose();
}
}
public int getFixCol() {
return col;
}
/**
*
**/
public void setFixCol(int fixCol) {
this.col = fixCol;
}
private int division;
private class FixedColumnsDelegate extends JLabel {
@Override
public void paintComponent(Graphics g) {
Rectangle r = table.getBounds();
if (division > 0) {
table.invalidate();
table.validate();
Rectangle visibleRect = table.getVisibleRect();
BufferedImage image = new BufferedImage(division, r.height,
BufferedImage.TYPE_INT_ARGB);
Graphics g2 = image.getGraphics();
g2.setClip(0, visibleRect.y, division, table.getBounds().height);
g2.setColor(Color.RED);
g2.fillRect(0, 0, division, table.getBounds().height);
table.paint(g2);
g.drawImage(image, 0, 0, division, table.getBounds().height, 0,
visibleRect.y - 1, division,
visibleRect.y + table.getBounds().height-1, null);
// g.setColor(Color.BLACK);
// for (int i = 0; i < visibleRect.y
// + table.getBounds().height; i += 8) {
// g.drawLine(division - 1, i, division - 1, i + 4);
// g.drawLine(division - 2, i, division - 2, i + 4);
// }
g2.dispose();
}
}
}
private class FixedMouseListenter extends MouseAdapter {
private FixedColumnsDelegate fixedColumns;
private boolean added;
public FixedMouseListenter() {
fixedColumns = new FixedColumnsDelegate();
}
@Override
public void mouseReleased(MouseEvent e) {
// point = e.getPoint();
doMosuseAction();
}
@Override
public void mouseMoved(MouseEvent e) {
// point = e.getPoint();
doMosuseAction(); System.out.println("cogido");
}
private void doMosuseAction() {
// if (point !=null) {
ajustClip();
// }
}
/**
**/
public void freeze() {
JLayeredPane pane = table.getRootPane().getLayeredPane();
if (added) {
pane.remove(fixedColumns);
}
pane.add(fixedColumns, JLayeredPane.POPUP_LAYER);
setBoundsOnFrozenColumns();
added = true;
fixedColumns.setVisible(true);
}
public void setBoundsOnFrozenColumns() {
if (col >= 0) {
division = table.getCellRect(1, col, true).x
+ table.getCellRect(1, col, true).width;
int limit = scrollPane.getBounds().width
- scrollPane.getVerticalScrollBar().getBounds().width
- 2;
division = Math.min(division, limit);
JLayeredPane pane = table.getRootPane().getLayeredPane();
Point p = scrollPane.getLocationOnScreen();
SwingUtilities.convertPointFromScreen(p, pane);
Rectangle scrollPaneBounds = scrollPane.getBounds();
int headerHeight = table.getTableHeader().getBounds().height + 2;
int hScrollHeight = (scrollPane.getHorizontalScrollBar()
.isVisible()) ? scrollPane.getHorizontalScrollBar()
.getBounds().height : 0;
int columnMargin = table.getColumnModel().getColumnMargin();
p.x += 2 * columnMargin;
int scrollRowHeaderWidth = 0;
/**
***/
if (scrollPane.getRowHeader() != null) {
scrollRowHeaderWidth = scrollPane.getRowHeader().getWidth();
if (scrollRowHeaderWidth <= 0) {
scrollRowHeaderWidth = 0;
}
}
p.x += scrollRowHeaderWidth;
fixedColumns.setBounds(p.x - 1, p.y + headerHeight - 2,
division, scrollPaneBounds.height - headerHeight
- hScrollHeight+columnMargin);
System.out.println("se repinto");
}
}
public int getDivision() {
return division;
}
/**
* {@inheritDoc}
* <p>
*
* @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
*/
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
// super.mouseClicked(e);
if (e.getClickCount() == 2) {
ajustClip();
}
}
/**
* {@inheritDoc} <p>
* @see java.awt.event.MouseAdapter#mouseEntered(java.awt.event.MouseEvent)
*/
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
Rectangle head = table.getTableHeader().getVisibleRect();
head.width= getDivision();
Rectangle lastCol = table.getTableHeader().getHeaderRect(col);
if (head.contains(lastCol)) {
System.out.println("contenido");
e.consume();
}else
super.mouseEntered(e);
}
}
private class ScrolPaneComponentListener implements ComponentListener {
@Override
public void componentHidden(ComponentEvent e) {
displayMessage(e.getComponent().getClass().getName()
+ " --- Hidden");
}
@Override
public void componentMoved(ComponentEvent e) {
displayMessage(e.getComponent().getClass().getName() + " --- Moved");
// setBoundsOnFrozenColumns();
}
@Override
public void componentResized(ComponentEvent e) {
displayMessage(e.getComponent().getClass().getName()
+ " --- Resized");
ajustClip();
}
@Override
public void componentShown(ComponentEvent e) {
displayMessage(e.getComponent().getClass().getName() + " --- Shown");
// setBoundsOnFrozenColumns();
// if(e.getComponent())
}
private void displayMessage(String msg) {
System.out.println(msg);
}
private void freeze() {
mouseListener.freeze();
}
}
public static String columnNames[] = { "Customer Name", "City",
"Payment Amount", "Date", "Item", "Quantity", "Related", "Price",
"Method", "Campaign", "Affiliate" };
public static String customers[] = { "Stores", "Exxon", "Chevron",
"General", "ConocoPhillips", "General", "Ford", "Citigroup",
"Bank", "AT&T", "Berkshire", "J.P.", "American", "Hewlett-Packard",
"International", "Valero", "Verizon", "McKesson", "Cardinal",
"Goldman", "Morgan", "Home", "Procter", "CVS", "UnitedHealth",
"Kroger", "Boeing", "AmerisourceBergen", "Costco", "Merrill",
"Target", "State", "WellPoint", "Dell", "Johnson", "Marathon",
"Lehman", "Wachovia", "United", "Walgreen", "Wells", "Dow",
"MetLife", "Microsoft", "Sears", "United", "Pfizer", "Lowe's",
"Time", "Caterpillar", "Medco", "Archer", "Fannie", "Freddie",
"Safeway", "Sunoco", "Lockheed", "Sprint", "PepsiCo", "Intel",
"Altria", "Supervalu", "Kraft", "Allstate", "Motorola", "Best",
"Walt", "FedEx", "Ingram", "Sysco", "Cisco", "Johnson",
"Honeywell", "Prudential", "American", "Northrop", "Hess", "GMAC",
"Comcast", "Alcoa", "DuPont", "New", "Coca-Cola", "News", "Aetna",
"TIAA-CREF", "General", "Tyson", "HCA", "Enterprise", "Macy's",
"Delphi", "Travelers", "Liberty", "Hartford", "Abbott",
"Washington", "Humana", "Massachusetts", "3M" };
public static String[] cities = { "Alaska", "Arizona ", "Arkansas ",
"California ", "Colorado ", "Connecticut ", "Delaware ",
"District of", "Florida ", "Georgia ", "Hawaii ", "Idaho ",
"Illinois ", "Indiana ", "Iowa ", "Kansas ", "Kentucky ",
"Louisiana ", "Maine ", "Maryland ", "Massachusetts ", "Michigan ",
"Minnesota ", "Mississippi ", "Missouri ", "Montana ", "Nebraska ",
"Nevada ", "New Hampshire", "New Jersey", "New Mexico", "New York",
"North Carolina", "North Dakota", "Ohio ", "Oklahoma ", "Oregon ",
"Pennsylvania ", "Rhode Island", "South Carolina", "South Dakota",
"Tennessee ", "Texas ", "Utah ", "Vermont ", "Virginia ",
"Washington ", "West Virginia", "Wisconsin ", "Wyoming " };
public static void main(String arg[]) throws Exception {
try {
JFrame.setDefaultLookAndFeelDecorated(true);
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
int rows = customers.length;
int columns = columnNames.length;
Object data[][] = new Object[rows][columns];
for (int i = 0; i < rows; ++i) {
data[i][0] = customers[i];
}
for (int i = 0; i < rows; ++i) {
data[i][1] = cities[i % cities.length];
}
for (int i = 0; i < rows; ++i) {
data[i][2] = new BigDecimal(Math.random() * 10000);
data[i][2] = ((BigDecimal) data[i][2]).setScale(2,
BigDecimal.ROUND_CEILING);
}
for (int i = 3; i < columns; ++i) {
for (int x = 0; x < rows; ++x) {
data[x][i] = "element:" + x + "," + i;
}
}
JXTable table = new JXTable(data, columnNames) {
/**
* {@inheritDoc}
* <p>
*
* @see org.jdesktop.swingx.JXTable#packAll()
*/
@Override
public void packAll() {
// TODO Auto-generated method stub
super.packAll();
firePropertyChange("packAll", "unpacked", "packAll");
}
};
table.putClientProperty(AbstractSearchable.MATCH_HIGHLIGHTER,
Boolean.TRUE);
AbstractHighlighter match = new ColorHighlighter(
HighlighterFactory.LINE_PRINTER, Color.BLACK);
((AbstractSearchable) table.getSearchable()).setMatchHighlighter(match);
table.setColumnControlVisible(true);
JScrollPane scrollPane = new JScrollPane(table);
JXFindBar findBar = new JXFindBar(table.getSearchable());
FixTableManager tableHeader = new FixTableManager(table, scrollPane);
// 固定å‰ä¸‰åˆ—
tableHeader.setFixCol(2);
table.addPropertyChangeListener(tableHeader);
table.addKeyListener(tableHeader);
match.addChangeListener(tableHeader);
JFrame frame = new JFrame("Test");
frame.add(BorderLayout.SOUTH, findBar);
frame.add("Center", scrollPane);
frame.setSize(600, 450);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
/**
* {@inheritDoc}
* <p>
*
* @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
*/
@Override
public void propertyChange(final PropertyChangeEvent evt) {
// TODO Auto-generated method stub
if (evt.getPropertyName().equals("packAll")) {
ajustClip();
}
}
/**
*
*/
public void ajustClip() {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
mouseListener.freeze();
}
});
}
/**
* {@inheritDoc}
* <p>
*
* @see java.awt.event.KeyListener#keyTyped(java.awt.event.KeyEvent)
*/
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
/**
* {@inheritDoc}
* <p>
*
* @see java.awt.event.KeyListener#keyPressed(java.awt.event.KeyEvent)
*/
@Override
public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub
int c = e.getKeyCode();
if (c == KeyEvent.VK_LEFT) {
adjustScroll(table.getSelectedColumn());
}
}
/**
* @param co
*/
private void adjustScroll(int co) {
if (co >= 0) {
Rectangle r = table.getCellRect(1, co, true);
Point p = new Point(r.x - r.width, r.y);
Point copy = SwingUtilities.convertPoint(table, p, scrollPane);
Rectangle visiblearea = (Rectangle) scrollPane.getVisibleRect()
.clone();
visiblearea.x = mouseListener.getDivision();
if (!visiblearea.contains(copy)) {
Rectangle rect = table.getVisibleRect();
rect.x = p.x - mouseListener.getDivision();
table.scrollRectToVisible(rect);
}
}
}
/**
* {@inheritDoc}
* <p>
*
* @see java.awt.event.KeyListener#keyReleased(java.awt.event.KeyEvent)
*/
@Override
public void keyReleased(KeyEvent e) {
// No es necesario implementar
}
/**
* {@inheritDoc}
* <p>
*
* @see javax.swing.event.ChangeListener#stateChanged(javax.swing.event.ChangeEvent)
*/
@Override
public void stateChanged(ChangeEvent e) {
// El searchResult del searchable de la tabla es privado por lo que se
// utiliza refelexion para acceder a el y obtener la columna donde esta
// el resultado
try {
Field atributo = AbstractSearchable.class
.getDeclaredField("lastSearchResult");
atributo.setAccessible(true);
SearchResult search = (SearchResult) atributo.get((table
.getSearchable()));
adjustScroll(search.getFoundColumn());
} catch (NoSuchFieldException | SecurityException
| IllegalArgumentException | IllegalAccessException e1) {
// No se han presentado estas excepciones
}
}
}
我发现这个代码和解决许多问题，但也有其他的是我不能解决（调整大小时头在卷轴的端部）。我希望人们可以使用它并使其变得不重要。代码请求SwingX库
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问题不清楚，你能提供一些代码吗？ 也许你可以使用一些每次点击都增加的变量吗？ – 2010-07-28 14:37:51