plantuml/src/net/sourceforge/plantuml/creole/atom/AtomMath.java

115 lines
3.6 KiB
Java

/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2020, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* 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.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.creole.atom;
import java.awt.Color;
import java.awt.geom.Dimension2D;
import java.awt.image.BufferedImage;
import net.sourceforge.plantuml.Dimension2DDouble;
import net.sourceforge.plantuml.SvgString;
import net.sourceforge.plantuml.graphic.StringBounder;
import net.sourceforge.plantuml.math.ScientificEquationSafe;
import net.sourceforge.plantuml.ugraphic.UGraphic;
import net.sourceforge.plantuml.ugraphic.UImage;
import net.sourceforge.plantuml.ugraphic.UImageSvg;
import net.sourceforge.plantuml.ugraphic.color.ColorMapper;
import net.sourceforge.plantuml.ugraphic.color.HColor;
import net.sourceforge.plantuml.ugraphic.color.HColorSimple;
public class AtomMath extends AbstractAtom implements Atom {
private final double scale;
private final ScientificEquationSafe math;
private final HColor foreground;
private final HColor background;
private final ColorMapper colorMapper;
public AtomMath(ScientificEquationSafe math, HColor foreground, HColor background, double scale,
ColorMapper colorMapper) {
this.math = math;
this.colorMapper = colorMapper;
this.foreground = foreground;
this.background = background;
this.scale = scale;
}
private Dimension2D calculateDimensionSlow(StringBounder stringBounder) {
final BufferedImage image = math.getImage(scale, Color.BLACK, Color.WHITE);
return new Dimension2DDouble(image.getWidth(), image.getHeight());
}
private Dimension2D dim;
public Dimension2D calculateDimension(StringBounder stringBounder) {
if (dim == null) {
dim = calculateDimensionSlow(stringBounder);
}
return dim;
}
public double getStartingAltitude(StringBounder stringBounder) {
return 0;
}
public void drawU(UGraphic ug) {
final boolean isSvg = ug.matchesProperty("SVG");
final Color back;
if (background == null) {
back = null;
} else {
back = getColor(background, Color.WHITE);
}
final Color fore = getColor(foreground, Color.BLACK);
// final double dpiFactor = ug.dpiFactor();
if (isSvg) {
final SvgString svg = math.getSvg(scale, fore, back);
ug.draw(new UImageSvg(svg));
} else {
final UImage image = new UImage(null, math.getImage(scale, fore, back), math.getFormula());
ug.draw(image);
}
}
private Color getColor(HColor color, Color defaultValue) {
if (color instanceof HColorSimple) {
return colorMapper.toColor(color);
}
return defaultValue;
}
}