+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2003 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package net.sourceforge.phpdt.internal.ui.util;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.eclipse.jface.util.Assert;
-import org.eclipse.jface.viewers.ColumnLayoutData;
-import org.eclipse.jface.viewers.ColumnPixelData;
-import org.eclipse.jface.viewers.ColumnWeightData;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.events.ControlAdapter;
-import org.eclipse.swt.events.ControlEvent;
-import org.eclipse.swt.graphics.Point;
-import org.eclipse.swt.graphics.Rectangle;
-import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.Table;
-import org.eclipse.swt.widgets.TableColumn;
-
-/**
- * A special composite to layout columns inside a table. The composite is needed
- * since we have to layout the columns "before" the actual table gets layouted.
- * Hence we can't use a normal layout manager.
- */
-public class TableLayoutComposite extends Composite {
-
- private List columns = new ArrayList();
-
- /**
- * Creates a new <code>TableLayoutComposite</code>.
- */
- public TableLayoutComposite(Composite parent, int style) {
- super(parent, style);
- addControlListener(new ControlAdapter() {
- public void controlResized(ControlEvent e) {
- Rectangle area = getClientArea();
- Table table = (Table) getChildren()[0];
- Point preferredSize = computeTableSize(table);
- int width = area.width - 2 * table.getBorderWidth();
- if (preferredSize.y > area.height) {
- // Subtract the scrollbar width from the total column width
- // if a vertical scrollbar will be required
- Point vBarSize = table.getVerticalBar().getSize();
- width -= vBarSize.x;
- }
- layoutTable(table, width, area, table.getSize().x < area.width);
- }
- });
- }
-
- /**
- * Adds a new column of data to this table layout.
- *
- * @param data
- * the column layout data
- */
- public void addColumnData(ColumnLayoutData data) {
- columns.add(data);
- }
-
- // ---- Helpers
- // -------------------------------------------------------------------------------------
-
- private Point computeTableSize(Table table) {
- Point result = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
-
- int width = 0;
- int size = columns.size();
- for (int i = 0; i < size; ++i) {
- ColumnLayoutData layoutData = (ColumnLayoutData) columns.get(i);
- if (layoutData instanceof ColumnPixelData) {
- ColumnPixelData col = (ColumnPixelData) layoutData;
- width += col.width;
- } else if (layoutData instanceof ColumnWeightData) {
- ColumnWeightData col = (ColumnWeightData) layoutData;
- width += col.minimumWidth;
- } else {
- Assert.isTrue(false, "Unknown column layout data"); //$NON-NLS-1$
- }
- }
- if (width > result.x)
- result.x = width;
- return result;
- }
-
- private void layoutTable(Table table, int width, Rectangle area,
- boolean increase) {
- // XXX: Layout is being called with an invalid value the first time
- // it is being called on Linux. This method resets the
- // Layout to null so we make sure we run it only when
- // the value is OK.
- 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++;
- // first time, use the weight specified by the column data,
- // otherwise use the actual width as the weight
- // int weight = firstTime ? cw.weight :
- // tableColumns[i].getWidth();
- int weight = cw.weight;
- totalWeight += weight;
- } else {
- Assert.isTrue(false, "Unknown column layout data"); //$NON-NLS-1$
- }
- }
-
- // Do we have columns that have a 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;
- // calculate weight as above
- // int weight = firstTime ? cw.weight :
- // tableColumns[i].getWidth();
- 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;
- }
- }
- }
-
- if (increase) {
- table.setSize(area.width, area.height);
- }
- for (int i = 0; i < size; i++) {
- tableColumns[i].setWidth(widths[i]);
- }
- if (!increase) {
- table.setSize(area.width, area.height);
- }
- }
-}
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