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/*******************************************************************************
* Copyright (c) 2004, 2008 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.provisional.commons.ui;
import java.lang.reflect.Field;
import org.eclipse.jface.resource.FontRegistry;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.widgets.Display;
/**
* @author Mik Kersten
* @since 3.0
*/
public class CommonFonts {
public static Font BOLD;
public static Font ITALIC;
public static Font BOLD_ITALIC;
public static Font STRIKETHROUGH = null;
public static boolean HAS_STRIKETHROUGH;
static {
if (Display.getCurrent() != null) {
init();
} else {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
init();
}
});
}
}
private static void init() {
BOLD = JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT);
ITALIC = JFaceResources.getFontRegistry().getItalic(JFaceResources.DEFAULT_FONT);
BOLD_ITALIC = new Font(Display.getCurrent(), getModifiedFontData(ITALIC.getFontData(), SWT.BOLD | SWT.ITALIC));
Font defaultFont = JFaceResources.getFontRegistry().get(JFaceResources.DEFAULT_FONT);
FontData[] defaultData = defaultFont.getFontData();
if (defaultData != null && defaultData.length == 1) {
FontData data = new FontData(defaultData[0].getName(), defaultData[0].getHeight(),
defaultData[0].getStyle());
if ("win32".equals(SWT.getPlatform())) { //$NON-NLS-1$
// NOTE: Windows only, for: data.data.lfStrikeOut = 1;
try {
Field dataField = data.getClass().getDeclaredField("data"); //$NON-NLS-1$
Object dataObject = dataField.get(data);
Class<?> clazz = dataObject.getClass().getSuperclass();
Field strikeOutFiled = clazz.getDeclaredField("lfStrikeOut"); //$NON-NLS-1$
strikeOutFiled.set(dataObject, (byte) 1);
CommonFonts.STRIKETHROUGH = new Font(Display.getCurrent(), data);
} catch (Throwable t) {
// ignore
}
}
}
if (CommonFonts.STRIKETHROUGH == null) {
CommonFonts.HAS_STRIKETHROUGH = false;
CommonFonts.STRIKETHROUGH = defaultFont;
} else {
CommonFonts.HAS_STRIKETHROUGH = true;
}
}
/**
* NOTE: disposal of JFaceResources fonts handled by registry.
*/
public static void dispose() {
if (CommonFonts.STRIKETHROUGH != null && !CommonFonts.STRIKETHROUGH.isDisposed()) {
CommonFonts.STRIKETHROUGH.dispose();
CommonFonts.BOLD_ITALIC.dispose();
}
}
/**
* Copied from {@link FontRegistry}
*/
private static FontData[] getModifiedFontData(FontData[] baseData, int style) {
FontData[] styleData = new FontData[baseData.length];
for (int i = 0; i < styleData.length; i++) {
FontData base = baseData[i];
styleData[i] = new FontData(base.getName(), base.getHeight(), base.getStyle() | style);
}
return styleData;
}
}
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