table的列宽自动矫正。resize.
1.在第一个类来写
protected void createTableColumns(Table table) { List columnNames = new ArrayList(); TableLayout tableLayout = new AutoResizeTableLayout(table); for(Iterator iter = getLabelAccessors().iterator(); iter.hasNext();) { Accessor accessor = (Accessor)(iter.next()); String label = accessor.getOptionalString(); columnNames.add(label); if(accessor instanceof AbstractLabelAccessor) { AbstractLabelAccessor labelAccessor = (AbstractLabelAccessor)accessor; if(labelAccessor.isFixed()) { if(labelAccessor.getWidth() >= 0) { tableLayout.addColumnData(new ColumnPixelData(labelAccessor.getWidth())); } else { tableLayout.addColumnData(new ColumnWeightData(100/getLabelAccessors().size())); } } else { if(labelAccessor.getWeight() >= 0) { if(labelAccessor.getMinWidth() >= 0) { tableLayout.addColumnData(new ColumnWeightData(labelAccessor.getWeight(), labelAccessor.getMinWidth())); } else { tableLayout.addColumnData(new ColumnWeightData(labelAccessor.getWeight())); } } else { // ignore MinWidth... tableLayout.addColumnData(new ColumnWeightData(100/getLabelAccessors().size())); } } } else { if(label.length() == 0) { tableLayout.addColumnData(new ColumnWeightData(NO_ABSTRACT_LABEL_ACCESSOR_EMPTY_LABEL_COLUMN_WEIGHT, true)); } else { tableLayout.addColumnData(new ColumnWeightData(NO_ABSTRACT_LABEL_ACCESSOR_NO_EMPTY_LABEL_COLUMN_WEIGHT, NO_ABSTRACT_LABEL_ACCESSOR_NO_EMPTY_LABEL_COLUMN_MINWIDTH, true)); } } } for (Iterator iter = columnNames.iterator(); iter.hasNext();) { TableColumn column = new TableColumn(table, SWT.NONE);// column.setMoveable(true); column.setText((String)iter.next()); } table.setLayout(tableLayout); table.pack(); }import java.util.ArrayList;import java.util.List;import org.eclipse.jface.viewers.ColumnLayoutData;import org.eclipse.jface.viewers.ColumnPixelData;import org.eclipse.jface.viewers.ColumnWeightData;import org.eclipse.jface.viewers.TableLayout;import org.eclipse.swt.events.ControlEvent;import org.eclipse.swt.events.ControlListener;import org.eclipse.swt.widgets.Table;import org.eclipse.swt.widgets.TableColumn;/** * COMMENT - Add description of this class or interface here. * Description should go beyond the class/interface name. * Use the following template: * * <Short description of class (noun phrase) followed by a dot> * <More elaborate description of what kind of object this class or interface represents.> * <Give information on (special) characteristics if possible.> */public class AutoResizeTableLayout extends TableLayout implements ControlListener{ private final Table table; private List columns = new ArrayList(); private boolean autosizing = false; private int oldWidth; /** * COMMENT - Add concise description of this constructor. * Description should go beyond the constructor's name. * * */ public AutoResizeTableLayout(final Table table) { this.table = table; table.addControlListener(this); } public void addColumnData(ColumnLayoutData data){ columns.add(data); super.addColumnData(data); } /* (non-Javadoc) * @see org.eclipse.swt.events.ControlListener#controlMoved(org.eclipse.swt.events.ControlEvent) */ public void controlMoved(ControlEvent e) { } /* (non-Javadoc) * @see org.eclipse.swt.events.ControlListener#controlResized(org.eclipse.swt.events.ControlEvent) */ public void controlResized(ControlEvent e) { // only react on changing width min. few pixels // (see workaround for SWT bug getting unnecessary scroll bar) if (Math.abs(oldWidth - table.getClientArea().width) > 5) { if (autosizing) { return; } autosizing = true; try { autoSizeColumns(); } finally { autosizing = false; oldWidth = table.getClientArea().width; } } } /** * <Short description (short verb phrase possible) followed by a dot> * <More elaborate description of "what" this method does. Omit the "how" unless necessary.> * * */ private void autoSizeColumns() { int width = table.getClientArea().width; width -= 10; // workaround for SWT bug getting unnecessary scroll bar if(width <= 1) return; TableColumn[] tableColumns = table.getColumns(); int size = Math.min(columns.size(), tableColumns.length); int[] widths = new int[size]; int fixedWidth = 0; int numberOfWeightColumns = 0; int totalWeight = 0; //First calc space occupied by fixed columns for (int i = 0; i < size; ++i) { ColumnLayoutData col = (ColumnLayoutData) columns.get(i); if(col instanceof ColumnPixelData){ int pixels = ((ColumnPixelData)col).width; widths[i] = pixels; fixedWidth += pixels; } else if(col instanceof ColumnWeightData){ ColumnWeightData cw = (ColumnWeightData)col; ++numberOfWeightColumns; int weight = cw.weight; totalWeight += weight; } else{ throw new IllegalStateException("Unknown column layout data"); //$NON-NLS-1$ } } //Do we have columns that have weight? if(numberOfWeightColumns > 0){ //Now, distribute the rest to the columns with weight int rest = width - fixedWidth; int totalDistributed = 0; for (int i = 0; i < size; ++i) { ColumnLayoutData col = (ColumnLayoutData) columns.get(i); if(col instanceof ColumnWeightData){ ColumnWeightData cw = (ColumnWeightData)col; int weight = cw.weight; int pixels = totalWeight == 0 ? 0 : weight * rest/totalWeight; if(pixels < cw.minimumWidth) pixels = cw.minimumWidth; totalDistributed += pixels; widths[i] = pixels; } } //Distribute any remaining pixels to columns with weight int diff = rest - totalDistributed; for (int i = 0; diff > 0; ++i) { if(i == size) i = 0; ColumnLayoutData col = (ColumnLayoutData) columns.get(i); if(col instanceof ColumnWeightData){ ++widths[i]; --diff; } } } for (int i = 0; i < size; i++) { if(tableColumns[i].getWidth() != widths[i]) tableColumns[i].setWidth(widths[i]); } } /** * remove this from the tables listeners. */ public void dispose() { table.removeControlListener(this); }}