/* ResizeAtom.java
* =========================================================================
* This file is part of the JLaTeXMath Library - http://forge.scilab.org/jlatexmath
*
* Copyright (C) 2011 DENIZET Calixte
*
* This program 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 2 of the License, or (at
* your option) any later version.
*
* This program is 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.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* Linking this library statically or dynamically with other modules
* is making a combined work based on this library. Thus, the terms
* and conditions of the GNU General Public License cover the whole
* combination.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce
* an executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under terms
* of your choice, provided that you also meet, for each linked independent
* module, the terms and conditions of the license of that module.
* An independent module is a module which is not derived from or based
* on this library. If you modify this library, you may extend this exception
* to your version of the library, but you are not obliged to do so.
* If you do not wish to do so, delete this exception statement from your
* version.
*
*/
package com.himamis.retex.renderer.share;
/**
* An atom representing a scaled Atom.
*/
public class ResizeAtom extends Atom {
private Atom base;
private int wunit, hunit;
private double w, h;
private boolean keepaspectratio;
@Override
final public Atom duplicate() {
ResizeAtom ret = new ResizeAtom();
ret.base = base;
ret.wunit = wunit;
ret.hunit = hunit;
ret.w=w;
ret.h=h;
ret.keepaspectratio = keepaspectratio;
return setFields(ret);
}
public ResizeAtom(Atom base, String ws, String hs, boolean keepaspectratio) {
this.type = base.type;
this.base = base;
this.keepaspectratio = keepaspectratio;
double[] w = SpaceAtom.getLength(ws == null ? "" : ws);
double[] h = SpaceAtom.getLength(hs == null ? "" : hs);
if (w.length != 2) {
this.wunit = -1;
} else {
this.wunit = (int) w[0];
this.w = w[1];
}
if (h.length != 2) {
this.hunit = -1;
} else {
this.hunit = (int) h[0];
this.h = h[1];
}
}
public ResizeAtom() {
// TODO Auto-generated constructor stub
}
@Override
public int getLeftType() {
return base.getLeftType();
}
@Override
public int getRightType() {
return base.getRightType();
}
@Override
public Box createBox(TeXEnvironment env) {
Box bbox = base.createBox(env);
if (wunit == -1 && hunit == -1) {
return bbox;
}
double xscl = 1;
double yscl = 1;
if (wunit != -1 && hunit != -1) {
xscl = w * SpaceAtom.getFactor(wunit, env) / bbox.width;
yscl = h * SpaceAtom.getFactor(hunit, env) / bbox.height;
if (keepaspectratio) {
xscl = Math.min(xscl, yscl);
yscl = xscl;
}
} else if (wunit != -1 && hunit == -1) {
xscl = w * SpaceAtom.getFactor(wunit, env) / bbox.width;
yscl = xscl;
} else {
yscl = h * SpaceAtom.getFactor(hunit, env) / bbox.height;
xscl = yscl;
}
return new ScaleBox(bbox, xscl, yscl);
}
}