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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
/* ========================================================================
* 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
*
* Revision $Revision: 4236 $
*
*/
package net.sourceforge.plantuml.svek;
import java.awt.geom.Dimension2D;
import java.util.List;
import net.sourceforge.plantuml.Dimension2DDouble;
import net.sourceforge.plantuml.Url;
import net.sourceforge.plantuml.graphic.HorizontalAlignment;
import net.sourceforge.plantuml.graphic.StringBounder;
import net.sourceforge.plantuml.graphic.TextBlock;
import net.sourceforge.plantuml.ugraphic.UGraphic;
import net.sourceforge.plantuml.ugraphic.UTranslate;
public class DecorateTextBlock implements TextBlock {
private final TextBlock original;
private final HorizontalAlignment horizontal1;
private final TextBlock text1;
private final HorizontalAlignment horizontal2;
private final TextBlock text2;
private double deltaX;
private double deltaY;
public DecorateTextBlock(TextBlock original, TextBlock text, HorizontalAlignment horizontal) {
this(original, text, horizontal, null, null);
}
public DecorateTextBlock(TextBlock original, TextBlock text1, HorizontalAlignment horizontal1, TextBlock text2,
HorizontalAlignment horizontal2) {
this.original = original;
this.horizontal1 = horizontal1;
this.text1 = text1;
this.horizontal2 = horizontal2;
this.text2 = text2;
}
public void drawU(UGraphic ug) {
final StringBounder stringBounder = ug.getStringBounder();
final Dimension2D dimOriginal = original.calculateDimension(stringBounder);
final Dimension2D dimText1 = getTextDim(text1, stringBounder);
final Dimension2D dimText2 = getTextDim(text2, stringBounder);
final Dimension2D dimTotal = calculateDimension(stringBounder);
final double yText1 = 0;
final double yImage = yText1 + dimText1.getHeight();
final double yText2 = yImage + dimOriginal.getHeight();
final double xImage = (dimTotal.getWidth() - dimOriginal.getWidth()) / 2;
if (text1 != null) {
final double xText1 = getTextX(dimText1, dimTotal, horizontal1);
text1.drawU(ug.apply(new UTranslate(xText1, yText1)));
}
original.drawU(ug.apply(new UTranslate(xImage, yImage)));
deltaX = xImage;
deltaY = yImage;
if (text2 != null) {
final double xText2 = getTextX(dimText2, dimTotal, horizontal2);
text2.drawU(ug.apply(new UTranslate(xText2, yText2)));
}
}
private Dimension2D getTextDim(TextBlock text, StringBounder stringBounder) {
if (text == null) {
return new Dimension2DDouble(0, 0);
}
return text.calculateDimension(stringBounder);
}
private double getTextX(final Dimension2D dimText, final Dimension2D dimTotal, HorizontalAlignment h) {
if (h == HorizontalAlignment.CENTER) {
return (dimTotal.getWidth() - dimText.getWidth()) / 2;
} else if (h == HorizontalAlignment.LEFT) {
return 0;
} else if (h == HorizontalAlignment.RIGHT) {
return dimTotal.getWidth() - dimText.getWidth();
} else {
throw new IllegalStateException();
}
}
public Dimension2D calculateDimension(StringBounder stringBounder) {
final Dimension2D dimOriginal = original.calculateDimension(stringBounder);
final Dimension2D dimText = Dimension2DDouble.mergeTB(getTextDim(text1, stringBounder),
getTextDim(text2, stringBounder));
return Dimension2DDouble.mergeTB(dimOriginal, dimText);
}
private double getDeltaX() {
if (original instanceof DecorateTextBlock) {
return deltaX + ((DecorateTextBlock) original).deltaX;
}
return deltaX;
}
private double getDeltaY() {
if (original instanceof DecorateTextBlock) {
return deltaY + ((DecorateTextBlock) original).deltaY;
}
return deltaY;
}
public List getUrls() {
return original.getUrls();
}
}