| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.custom; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * This class provides the layout for CTabFolder |
| * |
| * @see CTabFolder |
| */ |
| class CTabFolderLayout extends Layout { |
| protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) { |
| CTabFolder folder = (CTabFolder)composite; |
| CTabItem[] items = folder.items; |
| // preferred width of tab area to show all tabs |
| int tabW = 0; |
| GC gc = new GC(folder); |
| for (int i = 0; i < items.length; i++) { |
| if (folder.single) { |
| tabW = Math.max(tabW, items[i].preferredWidth(gc, true, false)); |
| } else { |
| tabW += items[i].preferredWidth(gc, i == folder.selectedIndex, false); |
| } |
| } |
| gc.dispose(); |
| tabW += 3; |
| if (folder.showMax) tabW += CTabFolder.BUTTON_SIZE; |
| if (folder.showMin) tabW += CTabFolder.BUTTON_SIZE; |
| if (folder.single) tabW += 3*CTabFolder.BUTTON_SIZE/2; //chevron |
| if (folder.topRight != null) { |
| Point pt = folder.topRight.computeSize(SWT.DEFAULT, folder.tabHeight, flushCache); |
| tabW += 3 + pt.x; |
| } |
| if (!folder.single && !folder.simple) tabW += folder.curveWidth - 2*folder.curveIndent; |
| |
| int controlW = 0; |
| int controlH = 0; |
| // preferred size of controls in tab items |
| for (int i = 0; i < items.length; i++) { |
| Control control = items[i].getControl(); |
| if (control != null && !control.isDisposed()){ |
| Point size = control.computeSize (wHint, hHint, flushCache); |
| controlW = Math.max (controlW, size.x); |
| controlH = Math.max (controlH, size.y); |
| } |
| } |
| |
| int minWidth = Math.max(tabW, controlW); |
| int minHeight = (folder.minimized) ? 0 : controlH; |
| if (minWidth == 0) minWidth = CTabFolder.DEFAULT_WIDTH; |
| if (minHeight == 0) minHeight = CTabFolder.DEFAULT_HEIGHT; |
| |
| if (wHint != SWT.DEFAULT) minWidth = wHint; |
| if (hHint != SWT.DEFAULT) minHeight = hHint; |
| |
| return new Point (minWidth, minHeight); |
| } |
| protected boolean flushCache(Control control) { |
| return true; |
| } |
| protected void layout(Composite composite, boolean flushCache) { |
| CTabFolder folder = (CTabFolder)composite; |
| // resize content |
| if (folder.selectedIndex != -1) { |
| Control control = folder.items[folder.selectedIndex].getControl(); |
| if (control != null && !control.isDisposed()) { |
| control.setBounds(folder.getClientArea()); |
| } |
| } |
| } |
| } |