net.sourceforge.plantuml.ugraphic.TextLimitFinder Maven / Gradle / Ivy
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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: 5183 $
*
*/
package net.sourceforge.plantuml.ugraphic;
import java.awt.geom.Dimension2D;
import java.io.IOException;
import java.io.OutputStream;
import net.sourceforge.plantuml.Url;
import net.sourceforge.plantuml.graphic.StringBounder;
public class TextLimitFinder implements UGraphic {
public UGraphic apply(UChange change) {
if (change instanceof UTranslate) {
return new TextLimitFinder(stringBounder, minmax, translate.compose((UTranslate) change));
} else if (change instanceof UStroke) {
return new TextLimitFinder(this);
} else if (change instanceof UChangeBackColor) {
return new TextLimitFinder(this);
} else if (change instanceof UChangeColor) {
return new TextLimitFinder(this);
}
throw new UnsupportedOperationException();
}
private final StringBounder stringBounder;
private final UTranslate translate;
private final MinMaxMutable minmax;
public TextLimitFinder(StringBounder stringBounder, boolean initToZero) {
this(stringBounder, MinMaxMutable.getEmpty(initToZero), new UTranslate());
}
private TextLimitFinder(StringBounder stringBounder, MinMaxMutable minmax, UTranslate translate) {
this.stringBounder = stringBounder;
this.minmax = minmax;
this.translate = translate;
}
private TextLimitFinder(TextLimitFinder other) {
this(other.stringBounder, other.minmax, other.translate);
}
public StringBounder getStringBounder() {
return stringBounder;
}
public UParam getParam() {
return new UParamNull();
}
public void draw(UShape shape) {
if (shape instanceof UText) {
final double x = translate.getDx();
final double y = translate.getDy();
drawText(x, y, (UText) shape);
}
}
public ColorMapper getColorMapper() {
throw new UnsupportedOperationException();
}
public void startUrl(Url url) {
}
public void closeAction() {
}
public void writeImage(OutputStream os, String metadata, int dpi) throws IOException {
throw new UnsupportedOperationException();
}
private void drawText(double x, double y, UText text) {
final Dimension2D dim = stringBounder.calculateDimension(text.getFontConfiguration().getFont(), text.getText());
y -= dim.getHeight() - 1.5;
minmax.addPoint(x, y);
minmax.addPoint(x, y + dim.getHeight());
minmax.addPoint(x + dim.getWidth(), y);
minmax.addPoint(x + dim.getWidth(), y + dim.getHeight());
}
public double getMaxX() {
return minmax.getMaxX();
}
public double getMaxY() {
return minmax.getMaxY();
}
public double getMinX() {
return minmax.getMinX();
}
public double getMinY() {
return minmax.getMinY();
}
}