/* HorizontalBox.java
* =========================================================================
* This file is originally part of the JMathTeX Library - http://jmathtex.sourceforge.net
*
* Copyright (C) 2004-2007 Universiteit Gent
* Copyright (C) 2009 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;
import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;
import com.himamis.retex.renderer.share.platform.graphics.Color;
import com.himamis.retex.renderer.share.platform.graphics.Graphics2DInterface;
/**
* A box composed of a horizontal row of child boxes.
*/
public class HorizontalBox extends Box {
protected List<Integer> breakPositions;
public HorizontalBox(Box b, double w, int alignment) {
if (w != Double.POSITIVE_INFINITY) {
double rest = w - b.getWidth();
if (rest > 0) {
if (alignment == TeXConstants.ALIGN_CENTER || alignment == TeXConstants.ALIGN_NONE) {
StrutBox s = new StrutBox(rest / 2, 0, 0, 0);
add(s);
add(b);
add(s);
} else if (alignment == TeXConstants.ALIGN_LEFT) {
add(b);
add(new StrutBox(rest, 0, 0, 0));
} else if (alignment == TeXConstants.ALIGN_RIGHT) {
add(new StrutBox(rest, 0, 0, 0));
add(b);
} else {
add(b);
}
} else {
add(b);
}
} else {
add(b);
}
}
public HorizontalBox(Box b) {
add(b);
}
public HorizontalBox() {
// basic horizontal box
}
public HorizontalBox(Color fg, Color bg) {
super(fg, bg);
}
public HorizontalBox cloneBox() {
HorizontalBox b = new HorizontalBox(foreground, background);
b.shift = shift;
return b;
}
@Override
public void draw(Graphics2DInterface g2, double x, double y) {
startDraw(g2, x, y);
double xPos = x;
for (Box box : children) {
/*
* int i = children.indexOf(box); if (breakPositions != null &&
* breakPositions.indexOf(i) != -1) { box.markForDEBUG = java.awt.Color.BLUE; }
*/
box.draw(g2, xPos, y + box.shift);
xPos += box.getWidth();
}
endDraw(g2);
}
@Override
public final void add(Box b) {
recalculate(b);
super.add(b);
}
@Override
public final void add(int pos, Box b) {
recalculate(b);
super.add(pos, b);
}
private void recalculate(Box b) {
// Commented for ticket 764
// \left(\!\!\!\begin{array}{c}n\\\\r\end{array}\!\!\!\right)+123
// curPos += b.getWidth();
// width = Math.max(width, curPos);
width += b.getWidth();
height = Math.max((children.size() == 0 ? Double.NEGATIVE_INFINITY : height), b.height - b.shift);
depth = Math.max((children.size() == 0 ? Double.NEGATIVE_INFINITY : depth), b.depth + b.shift);
}
@Override
public int getLastFontId() {
// iterate from the last child box to the first untill a font id is found
// that's not equal to NO_FONT
int fontId = TeXFont.NO_FONT;
for (ListIterator it = children.listIterator(children.size()); fontId == TeXFont.NO_FONT
&& it.hasPrevious();) {
fontId = ((Box) it.previous()).getLastFontId();
}
return fontId;
}
public void addBreakPosition(int pos) {
if (breakPositions == null) {
breakPositions = new ArrayList<Integer>();
}
breakPositions.add(pos);
}
protected HorizontalBox[] split(int position) {
return split(position, 1);
}
protected HorizontalBox[] splitRemove(int position) {
return split(position, 2);
}
private HorizontalBox[] split(int position, int shift) {
HorizontalBox hb1 = cloneBox();
HorizontalBox hb2 = cloneBox();
for (int i = 0; i <= position; i++) {
hb1.add(children.get(i));
}
for (int i = position + shift; i < children.size(); i++) {
hb2.add(children.get(i));
}
if (breakPositions != null) {
for (int i = 0; i < breakPositions.size(); i++) {
if (breakPositions.get(i) > position + 1) {
hb2.addBreakPosition(breakPositions.get(i) - position - 1);
}
}
}
return new HorizontalBox[] { hb1, hb2 };
}
@Override
public void getPath(double x, double y, ArrayList<Integer> list) {
double xPos = 0;
for (Box box : children) {
if (xPos + box.getWidth() > x) {
if (box instanceof StrutBox) {
xPos += box.getWidth();
continue;
}
int idx = children.indexOf(box);
list.add(idx);
box.getPath(x - xPos, y, list);
return;
}
xPos += box.getWidth();
}
if (children.get(children.size() - 1) instanceof StrutBox) {
list.add(children.size() - 2);
children.get(children.size() - 2).getPath(x, y, list);
return;
}
if (x > xPos) {
list.add(children.size());
children.get(children.size() - 1).getPath(x - xPos, y, list);
}
}
}