org.eclipse.rmf.reqif10.pror.presentation.headline.ui.HeadlineCellRenderer.java Source code

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Here is the source code for org.eclipse.rmf.reqif10.pror.presentation.headline.ui.HeadlineCellRenderer.java

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/*******************************************************************************
 * Copyright (c) 2011 Formal Mind GmbH and University of Dusseldorf.
 * 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:
 *     Michael Jastram - initial API and implementation
 ******************************************************************************/
package org.eclipse.rmf.reqif10.pror.presentation.headline.ui;

import org.eclipse.jface.resource.FontRegistry;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.rmf.reqif10.AttributeValue;
import org.eclipse.rmf.reqif10.AttributeValueSimple;
import org.eclipse.rmf.reqif10.common.util.ReqIF10Util;
import org.eclipse.rmf.reqif10.pror.editor.presentation.service.IProrCellRenderer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Rectangle;

public class HeadlineCellRenderer implements IProrCellRenderer {

    private String fontHandle = "pror_headline_font-";
    private Font font;
    private int fontSize;
    private boolean fontSizeChanged = false;

    public HeadlineCellRenderer(String identifier) {
        this.fontHandle = "pror_headline_font-" + identifier;
    }

    public void setDatatypeId(String identifier) {
        this.fontHandle = "pror_headline_font-" + identifier;
        setFontSize(fontSize);
    }

    public void setFontSize(final int fontSize) {
        this.fontSize = fontSize;
        this.fontSizeChanged = true;
    }

    public int doDrawCellContent(GC gc, Rectangle rect, Object value) {
        AttributeValueSimple av = (AttributeValueSimple) value;
        String text = " ";
        if (av != null && ReqIF10Util.getTheValue(av) != null) {
            text = ReqIF10Util.getTheValue(av).toString();
        }

        if (font == null || font.isDisposed() || fontSizeChanged) {
            FontRegistry fr = JFaceResources.getFontRegistry();
            FontData[] fontData = { new FontData("Arial", fontSize, SWT.BOLD) };
            fr.put(fontHandle + this, fontData);
            font = fr.get(fontHandle + this);
            fontSizeChanged = false;
        }

        gc.setFont(font);
        gc.drawText(text, rect.x, rect.y);
        return gc.textExtent(text).y;
    }

    public String doDrawHtmlContent(AttributeValue value) {
        AttributeValueSimple av = (AttributeValueSimple) value;
        return "<div style='font-size: " + fontSize + "pt; font-weight: bold; padding-top: 4pt;'>"
                + ReqIF10Util.getTheValue(av) + "</div>";
    }

}