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PlantUML is a component that allows to quickly write : * sequence diagram, * use case diagram, * class diagram, * activity diagram, * component diagram, * state diagram * object diagram

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/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2013, Arnaud Roques
 *
 * Project Info:  http://plantuml.sourceforge.net
 * 
 * This file is part of PlantUML.
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * Original Author:  Arnaud Roques
 *
 */
package net.sourceforge.plantuml.ugraphic.svg;

import java.awt.geom.Dimension2D;

import net.sourceforge.plantuml.StringUtils;
import net.sourceforge.plantuml.graphic.FontConfiguration;
import net.sourceforge.plantuml.graphic.FontStyle;
import net.sourceforge.plantuml.graphic.StringBounder;
import net.sourceforge.plantuml.svg.SvgGraphics;
import net.sourceforge.plantuml.ugraphic.ClipContainer;
import net.sourceforge.plantuml.ugraphic.ColorMapper;
import net.sourceforge.plantuml.ugraphic.UClip;
import net.sourceforge.plantuml.ugraphic.UDriver;
import net.sourceforge.plantuml.ugraphic.UFont;
import net.sourceforge.plantuml.ugraphic.UFontContext;
import net.sourceforge.plantuml.ugraphic.UParam;
import net.sourceforge.plantuml.ugraphic.UShape;
import net.sourceforge.plantuml.ugraphic.UText;

public class DriverTextSvg implements UDriver {

	private final StringBounder stringBounder;
	private final ClipContainer clipContainer;

	public DriverTextSvg(StringBounder stringBounder, ClipContainer clipContainer) {
		this.stringBounder = stringBounder;
		this.clipContainer = clipContainer;
	}

	public void draw(UShape ushape, double x, double y, ColorMapper mapper, UParam param, SvgGraphics svg) {

		final UClip clip = clipContainer.getClip();
		if (clip != null && clip.isInside(x, y) == false) {
			return;
		}

		final UText shape = (UText) ushape;
		final FontConfiguration fontConfiguration = shape.getFontConfiguration();
		final UFont font = fontConfiguration.getFont();
		String fontWeight = null;
		if (fontConfiguration.containsStyle(FontStyle.BOLD) || font.isBold()) {
			fontWeight = "bold";
		}
		String fontStyle = null;
		if (fontConfiguration.containsStyle(FontStyle.ITALIC) || font.isItalic()) {
			fontStyle = "italic";
		}
		String textDecoration = null;
		if (fontConfiguration.containsStyle(FontStyle.UNDERLINE)) {
			textDecoration = "underline";
		} else if (fontConfiguration.containsStyle(FontStyle.STRIKE)) {
			textDecoration = "line-through";
		}

		svg.setFillColor(StringUtils.getAsHtml(mapper.getMappedColor(fontConfiguration.getColor())));
		String text = shape.getText();
		if (text.startsWith(" ")) {
			final double space = stringBounder.calculateDimension(font, " ").getWidth();
			while (text.startsWith(" ")) {
				x += space;
				text = text.substring(1);
			}
		}
		text = text.trim();
		final Dimension2D dim = stringBounder.calculateDimension(font, text);
		svg.text(text, x, y, font.getFamily(UFontContext.SVG), font.getSize(), fontWeight, fontStyle, textDecoration,
				dim.getWidth(), fontConfiguration.getAttributes());
	}
}