我必须同步表格的水平滚动。列将是相同的，唯一可以为列更改的属性是它们的大小。现在下面的代码显示了 3 个同步滚动的表格。但是当我更改任何表中任何一列的大小然后尝试滚动时，我得到一个 Stack Overflow 错误并且 gui 被扭曲。
我试图通过将其余表格的视口位置设置为左侧首先出现的列来实现它。如果列的大小不同，那么从为该列滚动的百分比我正在重建其他表的位置。
import java.awt.Color;
import java.awt.Point;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumnModel;
public class ScrollableJTable implements AdjustmentListener{
JFrame frame = null;
JPanel panel = null;
JTable table = null;
JTableHeader header = null;
JScrollPane pane = null;
JTable table1 = null;
JTableHeader header1 = null;
JScrollPane pane1 = null;
JTable table2 = null;
JTableHeader header2 = null;
JScrollPane pane2 = null;
public static void main(String[] args) {
new ScrollableJTable();
}
public ScrollableJTable() {
frame = new JFrame("Creating a Scrollable JTable!");
panel = new JPanel();
String data[][] = {
{"001", "vinod", "Bihar", "India", "Biology", "65", "First","001", "vinod", "Bihar", "India", "Biology", "65", "First"},
{"002", "Raju", "ABC", "Kanada", "Geography", "58", "second","001", "vinod", "Bihar", "India", "Biology", "65", "First"},
{"003", "Aman", "Delhi", "India", "computer", "98", "Dictontion","001", "vinod", "Bihar", "India", "Biology", "65", "First"},
{"004", "Ranjan", "Bangloor", "India", "chemestry", "90", "Dictontion","001", "vinod", "Bihar", "India", "Biology", "65", "First"}
};
String col[] = {"Roll", "Name", "State", "country", "Math", "Marks", "Grade","Roll", "Name", "State", "country", "Math", "Marks", "Grade"};
table = new JTable(data, col);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
header = table.getTableHeader();
header.setBackground(Color.yellow);
pane = new JScrollPane(table);
pane.getHorizontalScrollBar().addAdjustmentListener(this);
pane.setSize(100, 100);
table1 = new JTable(data, col);
table1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
header1 = table1.getTableHeader();
header1.setBackground(Color.yellow);
pane1 = new JScrollPane(table1);
pane1.getHorizontalScrollBar().addAdjustmentListener(this);
pane1.setSize(100, 100);
table2 = new JTable(data, col);
table2.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
header2 = table2.getTableHeader();
header2.setBackground(Color.yellow);
pane2 = new JScrollPane(table2);
pane2.getHorizontalScrollBar().addAdjustmentListener(this);
pane2.setSize(100, 100);
panel.setSize(500, 500);
panel.add(pane);
panel.add(pane1);
panel.add(pane2);
frame.add(panel);
frame.pack();
frame.setSize(1000, 1000);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
public void adjustmentValueChanged(AdjustmentEvent e) {
JScrollPane scrollPane = null, scroll = null;
JScrollBar bar = null;
int position[] = null;
bar = (JScrollBar) e.getAdjustable();
scroll = (JScrollPane) bar.getParent();
position = this.getFirstVisibleColumnIndex(scroll);
for (int j = 0; j < panel.getComponentCount(); j++) {
scrollPane = (panel.getComponent(j) instanceof JScrollPane) ? (JScrollPane) panel.getComponent(j) : null;
if (scrollPane != null && scrollPane != scroll) this.setFirstColumnVisiblePosition(position, scrollPane);
}
}
private int[] getFirstVisibleColumnIndex(JScrollPane scroll) {
JTable table = null;
TableColumnModel model = null;
Object obj = null;
int retval[] = null, index = -1, position = -1, relpos = -1;
if (scroll == null) return null;
obj = scroll.getViewport().getView();
table = (obj instanceof JTable ? (JTable)obj : null);
if (table == null) return null;
model = table.getColumnModel();
if (model == null) return null;
position = scroll.getViewport().getViewPosition().x;
for (int column = 0; index == -1 && column < model.getColumnCount(); column++) {
position = position - model.getColumn(column).getWidth();
if (position < 0) {
index = column;
relpos = ((position + model.getColumn(column).getWidth()) * 100) / model.getColumn(column).getWidth();
}
}
retval = new int[2];
retval[0] = index;
retval[1] = relpos;
return retval;
}
private boolean setFirstColumnVisiblePosition(int position[], JScrollPane scroll) {
JTable table = null;
TableColumnModel model = null;
Object obj = null;
int pos = 0, width = 0;
if (scroll == null || position == null) return false;
obj = scroll.getViewport().getView();
table = (obj instanceof JTable ? (JTable)obj : null);
if (table == null) return false;
model = table.getColumnModel();
if (model == null) return false;
if (position[0] == -1 || position [1] == -1) return false;
for (int column = 0; column < position[0]; column++) {
pos = pos + model.getColumn(column).getWidth();
}
width = model.getColumn(position[0]).getWidth();
pos = pos + ((position[1] * width) / 100);
scroll.getViewport().setViewPosition(new Point(pos, scroll.getViewport().getViewPosition().y));
return true;
}
}