org.eclipse.wb.internal.xwt.model.property.editor.font.FontSupport.java Source code

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Here is the source code for org.eclipse.wb.internal.xwt.model.property.editor.font.FontSupport.java

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/*******************************************************************************
 * Copyright (c) 2011 Google, Inc.
 * 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:
 *    Google, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.wb.internal.xwt.model.property.editor.font;

import com.google.common.collect.Sets;

import org.eclipse.wb.os.OSSupport;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

import java.util.Arrays;
import java.util.Set;

/**
 * Helper for working with {@link Font}.
 * 
 * @author scheglov_ke
 * @coverage XWT.support
 */
public class FontSupport {
    ////////////////////////////////////////////////////////////////////////////
    //
    // Font
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * @return names of all fonts into system.
     */
    public static String[] getFontFamilies() throws Exception {
        Set<String> families = Sets.newTreeSet();
        // add all font families
        families.addAll(getFontFamilies(true));
        families.addAll(getFontFamilies(false));
        // sort names
        String[] sortFamilies = families.toArray(new String[families.size()]);
        Arrays.sort(sortFamilies);
        return sortFamilies;
    }

    private static Set<String> getFontFamilies(boolean scalable) throws Exception {
        Set<String> families = Sets.newTreeSet();
        //
        FontData[] fontList = Display.getDefault().getFontList(null, scalable);
        for (FontData fontData : fontList) {
            families.add(fontData.getName());
        }
        //
        return families;
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Text
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * @return text for style: e.x., <code>BOLD</code>.
     */
    public static String getFontStyleText(int style) throws Exception {
        boolean bold = (style & SWT.BOLD) != 0;
        boolean italic = (style & SWT.ITALIC) != 0;
        if (bold && italic) {
            return "BOLD ITALIC";
        }
        if (bold) {
            return "BOLD";
        }
        if (italic) {
            return "ITALIC";
        }
        return "";
    }

    /**
     * @return source code of style: e.x., <code>BOLD | ITALIC</code>.
     */
    public static String getFontStyleSource(int style) throws Exception {
        boolean bold = (style & SWT.BOLD) != 0;
        boolean italic = (style & SWT.ITALIC) != 0;
        if (bold && italic) {
            return "BOLD | ITALIC";
        }
        if (bold) {
            return "BOLD";
        }
        if (italic) {
            return "ITALIC";
        }
        return "";
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Preview
    //
    ////////////////////////////////////////////////////////////////////////////
    private static final FontPreviewShell m_fontPreviewShell = new FontPreviewShell();

    /**
     * @return the {@link Image} with graphical presentation of {@link Font}.
     */
    public static Image getFontPreview(Font font) throws Exception {
        m_fontPreviewShell.updateFont(font);
        return OSSupport.get().makeShot(m_fontPreviewShell);
    }
}