Java tutorial
/** * This file Copyright (c) 2005-2008 Aptana, Inc. This program is * dual-licensed under both the Aptana Public License and the GNU General * Public license. You may elect to use one or the other of these licenses. * * This program is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. Redistribution, except as permitted by whichever of * the GPL or APL you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or modify this * program under the terms of the GNU General Public License, * Version 3, as published by the Free Software Foundation. You should * have received a copy of the GNU General Public License, Version 3 along * with this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Aptana provides a special exception to allow redistribution of this file * with certain other free and open source software ("FOSS") code and certain additional terms * pursuant to Section 7 of the GPL. You may view the exception and these * terms on the web at http://www.aptana.com/legal/gpl/. * * 2. For the Aptana Public License (APL), this program and the * accompanying materials are made available under the terms of the APL * v1.0 which accompanies this distribution, and is available at * http://www.aptana.com/legal/apl/. * * You may view the GPL, Aptana's exception and additional terms, and the * APL in the file titled license.html at the root of the corresponding * plugin containing this source file. * * Any modifications to this file must keep this entire header intact. */ package com.aptana.ide.editors.preferences; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.swt.SWT; import org.eclipse.swt.events.PaintEvent; import org.eclipse.swt.events.PaintListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import com.aptana.ide.core.ui.SWTUtils; import com.aptana.ide.editors.unified.UnifiedColorManager; /** * @author Kevin Sawicki (ksawicki@aptana.com) */ public class PreferenceMastHead { /** * HEADER_BG_COLOR */ public static final Color HEADER_BG_COLOR = UnifiedColorManager.getInstance().getColor(new RGB(43, 49, 60)); /** * HEADER_FG_COLOR */ public static final Color HEADER_FG_COLOR = UnifiedColorManager.getInstance().getColor(new RGB(196, 196, 196)); /** * FOOTER_BG_COLOR */ public static final Color FOOTER_BG_COLOR = UnifiedColorManager.getInstance().getColor(new RGB(110, 110, 110)); /** * FOOTER_FG_COLOR */ public static final Color FOOTER_FG_COLOR = UnifiedColorManager.getInstance().getColor(new RGB(196, 196, 196)); private Composite top; private Composite parentVisible; private Image image; private Label editorDescription; /** * Creates a new preference mast head * * @param parent - * parent composite * @param description - * text description of pref page * @param parentLevel - * parent level to paint to (use -1 to turn off) * @param imageDescriptor - * image to display for pref page */ public PreferenceMastHead(Composite parent, String description, int parentLevel, ImageDescriptor imageDescriptor) { top = new Composite(parent, SWT.NONE); GridLayout topLayout = new GridLayout(2, false); topLayout.marginHeight = 0; topLayout.marginWidth = 0; top.setLayout(topLayout); GridData topData = new GridData(SWT.FILL, SWT.FILL, true, true); top.setBackground(HEADER_BG_COLOR); if (imageDescriptor != null) { image = imageDescriptor.createImage(); topData.heightHint = image.getImageData().height + 10; } Composite currParent = top.getParent(); int parents = 0; while (currParent != null && parents <= parentLevel) { currParent = currParent.getParent(); parents++; } if (currParent != null && parentLevel > 0) { parentVisible = currParent; } top.setLayoutData(topData); top.addPaintListener(new PaintListener() { public void paintControl(PaintEvent e) { if (top.isVisible()) { if (parentVisible != null) { GC gc = new GC(parentVisible); gc.setBackground(parentVisible.getBackground()); gc.fillRectangle(0, 0, parentVisible.getSize().x, parentVisible.getSize().y); gc.setBackground(HEADER_BG_COLOR); gc.fillRectangle(0, 0, parentVisible.getSize().x, top.getSize().y + 10); gc.setBackground(FOOTER_BG_COLOR); gc.fillRectangle(0, top.getSize().y + 10, parentVisible.getSize().x, 5); gc.dispose(); } if (image != null) { GC gc = new GC(top); gc.drawImage(image, 5, 10); gc.dispose(); } } } }); Composite descComp = new Composite(top, SWT.NONE); GridLayout descCompLayout = new GridLayout(1, true); descCompLayout.marginHeight = 13; descCompLayout.marginWidth = 0; descComp.setLayout(descCompLayout); descComp.setBackground(HEADER_BG_COLOR); editorDescription = new Label(descComp, SWT.LEFT | SWT.WRAP); Font font = editorDescription.getFont(); FontData[] fd = SWTUtils.resizeFont(font, 2); Font newFont = new Font(top.getDisplay(), fd); top.setFont(newFont); editorDescription.setFont(newFont); editorDescription.setBackground(HEADER_BG_COLOR); GridData descData = new GridData(SWT.FILL, SWT.BOTTOM, true, true); editorDescription.setLayoutData(descData); GridData descCompData = new GridData(SWT.FILL, SWT.FILL, true, true); if (image != null) { descCompData.horizontalIndent = image.getImageData().width + 15; } descComp.setLayoutData(descCompData); if (description != null) { editorDescription.setForeground(HEADER_FG_COLOR); editorDescription.setText(description); } } /** * Gets the mast head composite * * @return - mast head composite */ public Composite getControl() { return top; } /** * Sets the masthead to be visible or not * * @param visible */ public void setVisible(boolean visible) { if (!visible && parentVisible != null) { GC gc = new GC(parentVisible); gc.setBackground(parentVisible.getBackground()); gc.fillRectangle(0, 0, parentVisible.getSize().x, parentVisible.getSize().y); gc.dispose(); } } }