public Box createBox(TeXEnvironment env) {
// first create a simple square root construction
TeXFont tf = env.getTeXFont();
int style = env.getStyle();
// calculate minimum clearance clr
float clr, drt = tf.getDefaultRuleThickness(style);
if (style < TeXConstants.STYLE_TEXT)
clr = tf.getXHeight(style, tf.getChar(sqrtSymbol, style).getFontCode());
else clr = drt;
clr = drt + Math.abs(clr) / 4;
// cramped style for the formula under the root sign
Box bs = base.createBox(env.crampStyle());
HorizontalBox b = new HorizontalBox(bs);
b.add(new SpaceAtom(TeXConstants.UNIT_MU, 1, 0, 0).createBox(env.crampStyle()));
// create root sign
float totalH = b.getHeight() + b.getDepth();
Box rootSign = DelimiterFactory.create(sqrtSymbol, env, totalH + clr + drt);
// add half the excess to clr
float delta = rootSign.getDepth() - (totalH + clr);
clr += delta / 2;
// create total box
rootSign.setShift(-(b.getHeight() + clr));
OverBar ob = new OverBar(b, clr, rootSign.getHeight());
ob.setShift(-(b.getHeight() + clr + drt));
HorizontalBox squareRoot = new HorizontalBox(rootSign);
squareRoot.add(ob);
if (root == null)
// simple square root
return squareRoot;
else { // nthRoot, not a simple square root
// create box from root
Box r = root.createBox(env.rootStyle());
// shift root up
float bottomShift = FACTOR * (squareRoot.getHeight() + squareRoot.getDepth());
r.setShift(squareRoot.getDepth() - r.getDepth() - bottomShift);
// negative kern
Box negativeKern = new SpaceAtom(TeXConstants.UNIT_MU, -10f, 0, 0).createBox(env);
// arrange both boxes together with the negative kern
Box res = new HorizontalBox();
float pos = r.getWidth() + negativeKern.getWidth();
if (pos < 0) res.add(new StrutBox(-pos, 0, 0, 0));
res.add(r);
res.add(negativeKern);
res.add(squareRoot);
return res;
}
}
public Box createBox(TeXEnvironment env) {
boolean prev = env.getSmallCap();
env.setSmallCap(true);
Box box = base.createBox(env);
env.setSmallCap(prev);
return box;
}
public Box createBox(TeXEnvironment env) {
TeXFont tf = env.getTeXFont();
int style = env.getStyle();
Box b = base != null ? base.createBox(env) : new StrutBox(0, 0, 0, 0);
float sep = new SpaceAtom(TeXConstants.UNIT_POINT, 1f, 0, 0).createBox(env).getWidth();
Box arrow;
if (dble) {
arrow = XLeftRightArrowFactory.create(env, b.getWidth());
sep = 4 * sep;
} else {
arrow = XLeftRightArrowFactory.create(left, env, b.getWidth());
sep = -sep;
}
VerticalBox vb = new VerticalBox();
if (over) {
vb.add(arrow);
vb.add(new HorizontalBox(b, arrow.getWidth(), TeXConstants.ALIGN_CENTER));
float h = vb.getDepth() + vb.getHeight();
vb.setDepth(b.getDepth());
vb.setHeight(h - b.getDepth());
} else {
vb.add(new HorizontalBox(b, arrow.getWidth(), TeXConstants.ALIGN_CENTER));
vb.add(new StrutBox(0, sep, 0, 0));
vb.add(arrow);
float h = vb.getDepth() + vb.getHeight();
vb.setDepth(h - b.getHeight());
vb.setHeight(b.getHeight());
}
return vb;
}
public Box createBox(TeXEnvironment env) {
Box sp = new StrutBox(coeff * thin.createBox(env).getWidth(), 0, 0, 0);
HorizontalBox db = new HorizontalBox(sp);
db.add(ldotp.createBox(env));
db.add(sp);
Box b;
if (w != 0) {
float dw = db.getWidth();
b = new HorizontalBox(db);
while (b.getWidth() < w) {
b.add(db);
}
b = new HorizontalBox(b, w, TeXConstants.ALIGN_CENTER);
} else {
b = db;
}
b.type = TeXConstants.TYPE_MULTICOLUMN;
return b;
}
public Box createBox(TeXEnvironment env) {
Box box;
if (base != null) {
env = env.copy(env.getTeXFont().copy());
env.getTeXFont().setRoman(true);
box = base.createBox(env);
} else {
box = new StrutBox(0, 0, 0, 0);
}
return box;
}
public Box createBox(TeXEnvironment env) {
double tw = env.getTextwidth();
if (tw == Float.POSITIVE_INFINITY || type == GATHERED) {
return new MatrixAtom(isPartial, column, "").createBox(env);
}
VerticalBox vb = new VerticalBox();
Atom at = column.array.get(0).get(0);
int alignment = type == GATHER ? TeXConstants.ALIGN_CENTER : TeXConstants.ALIGN_LEFT;
if (at.alignment != -1) {
alignment = at.alignment;
}
vb.add(new HorizontalBox(at.createBox(env), tw, alignment));
Box Vsep = vsep_in.createBox(env);
for (int i = 1; i < column.row - 1; i++) {
at = column.array.get(i).get(0);
alignment = TeXConstants.ALIGN_CENTER;
if (at.alignment != -1) {
alignment = at.alignment;
}
vb.add(Vsep);
vb.add(new HorizontalBox(at.createBox(env), tw, alignment));
}
if (column.row > 1) {
at = column.array.get(column.row - 1).get(0);
alignment = type == GATHER ? TeXConstants.ALIGN_CENTER : TeXConstants.ALIGN_RIGHT;
if (at.alignment != -1) {
alignment = at.alignment;
}
vb.add(Vsep);
vb.add(new HorizontalBox(at.createBox(env), tw, alignment));
}
double height = vb.getHeight() + vb.getDepth();
vb.setHeight(height / 2);
vb.setDepth(height / 2);
return vb;
}
public Box createBox(TeXEnvironment env) {
float drt = env.getTeXFont().getDefaultRuleThickness(env.getStyle());
// cramp the style of the formula to be overlined and create vertical box
Box b = (base == null ? new StrutBox(0, 0, 0, 0) : base.createBox(env.crampStyle()));
OverBar ob = new OverBar(b, 3 * drt, drt);
// baseline vertical box = baseline box b
ob.setDepth(b.getDepth());
ob.setHeight(b.getHeight() + 5 * drt);
return ob;
}
public Box createBox(TeXEnvironment env) {
TeXFont tf = env.getTeXFont();
int style = env.getStyle();
// set base in cramped style
Box b = (base == null ? new StrutBox(0, 0, 0, 0) : base.createBox(env.crampStyle()));
float u = b.getWidth();
float s = 0;
if (base instanceof CharSymbol) s = tf.getSkew(((CharSymbol) base).getCharFont(tf), style);
// retrieve best Char from the accent symbol
Char ch = tf.getChar(accent.getName(), style);
while (tf.hasNextLarger(ch)) {
Char larger = tf.getNextLarger(ch, style);
if (larger.getWidth() <= u) ch = larger;
else break;
}
// calculate delta
float delta = Math.min(b.getHeight(), tf.getXHeight(style, ch.getFontCode()));
// create vertical box
VerticalBox vBox = new VerticalBox();
// accent
Box y;
float italic = ch.getItalic();
if (italic > TeXFormula.PREC) {
y = new HorizontalBox(new CharBox(ch));
y.add(new StrutBox(italic, 0, 0, 0));
} else y = new CharBox(ch);
// if diff > 0, center accent, otherwise center base
float diff = (u - y.getWidth()) / 2;
y.setShift(s + (diff > 0 ? diff : 0));
if (diff < 0) b = new HorizontalBox(b, y.getWidth(), TeXConstants.ALIGN_CENTER);
vBox.add(y);
// kern
vBox.add(new StrutBox(0, -delta, 0, 0));
// base
vBox.add(b);
// set height and depth vertical box
float total = vBox.getHeight() + vBox.getDepth(), d = b.getDepth();
vBox.setDepth(d);
vBox.setHeight(total - d);
return vBox;
}
