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) {
TreeEditor.addAtoms(this);
TeXFont tf = env.getTeXFont();
int style = env.getStyle();
Char c = tf.getChar(name, style);
Box cb = new CharBox(c);
if (env.getSmallCap() && unicode != 0 && Character.isLowerCase(unicode)) {
try {
cb =
new ScaleBox(
new CharBox(
tf.getChar(
TeXFormula.symbolTextMappings[Character.toUpperCase(unicode)], style)),
0.8,
0.8);
} catch (SymbolMappingNotFoundException e) {
}
}
if (type == TeXConstants.TYPE_BIG_OPERATOR) {
if (style < TeXConstants.STYLE_TEXT && tf.hasNextLarger(c)) c = tf.getNextLarger(c, style);
cb = new CharBox(c);
cb.setShift(
-(cb.getHeight() + cb.getDepth()) / 2 - env.getTeXFont().getAxisHeight(env.getStyle()));
float delta = c.getItalic();
HorizontalBox hb = new HorizontalBox(cb);
if (delta > TeXFormula.PREC) hb.add(new StrutBox(delta, 0, 0, 0));
usedBox = hb;
return hb;
}
usedBox = cb;
return cb;
}
