public void setLaTeX(Application app, String str) {
if (str.indexOf('"') > -1) {
GeoText text = app.getKernel().getAlgebraProcessor().evaluateToText(str, false, false);
if (text != null) {
text.setLaTeX(true, false);
str = text.getTextString();
} else {
// bad syntax, remove all quotes and use raw string
while (str.indexOf('"') > -1) str = str.replace('"', ' ');
// latexPreview.setLaTeX(str);
}
} else {
// latexPreview.setLaTeX(str);
}
String f = str.trim();
if (f.length() >= 2 && f.startsWith("$") && f.endsWith("$")) {
f = f.substring(1, f.length() - 1);
}
im =
(BufferedImage)
TeXFormula.getPartialTeXFormula(f)
.createBufferedImage(
TeXConstants.STYLE_DISPLAY, defaultSize, Color.black, Color.white);
/*
icon = TeXFormula.getPartialTeXFormula(f).createTeXIcon(
TeXConstants.STYLE_DISPLAY, defaultSize);
if (icon == null) {
icon = TeXFormula.getPartialTeXFormula("").createTeXIcon(
TeXConstants.STYLE_DISPLAY, defaultSize);
}
width = icon.getIconWidth();
height = icon.getIconHeight();*/
width = im.getWidth();
height = im.getHeight();
Dimension dim = new Dimension(width + 2 * INSET, height + 2 * INSET);
setPreferredSize(dim);
setSize(dim);
setLocation(0, 0);
setVisible(true);
repaint();
}
/**
* Renders LaTeX equation using JLaTeXMath
*
* @param app
* @param g2
* @param x
* @param y
* @param text
* @param font
* @param serif
* @param fgColor
* @param bgColor
* @return dimension of rendered equation
*/
public final FormulaDimension drawEquationJLaTeXMath(
Application app,
GeoElement geo,
Graphics2D g2,
int x,
int y,
String text,
Font font,
boolean serif,
Color fgColor,
Color bgColor,
boolean useCache,
Integer maxWidth,
Float lineSpace) {
// TODO uncomment when \- works
// text=addPossibleBreaks(text);
int width = -1;
int height = -1;
int depth = 0;
if (drawEquationJLaTeXMathFirstCall) { // first call
drawEquationJLaTeXMathFirstCall = false;
// initialise definitions
if (initJLaTeXMath == null)
initJLaTeXMath =
new TeXFormula(
"\\DeclareMathOperator{\\sech}{sech} \\DeclareMathOperator{\\csch}{csch} \\DeclareMathOperator{\\erf}{erf}");
// make sure cache doesn't get too big
JLaTeXMathCache.setMaxCachedObjects(100);
Iterator<String> it = Unicode.getCharMapIterator();
while (it.hasNext()) {
String lang = it.next();
Character ch = Unicode.getTestChar(lang);
Font testFont = app.getFontCanDisplay(ch.toString(), true, Font.PLAIN, 12);
if (testFont != null)
TeXFormula.registerExternalFont(Character.UnicodeBlock.of(ch), testFont.getFontName());
// Application.debug("LaTeX font registering: "+lang+" "+testFont.getFontName());
}
// Arabic is in standard Java fonts, so we don't need to search for a font
TeXFormula.registerExternalFont(Character.UnicodeBlock.of('\u0681'), "Sans Serif", "Serif");
try {
WebStartAlphabetRegistration.register(AlphabetRegistration.JLM_GREEK);
WebStartAlphabetRegistration.register(AlphabetRegistration.JLM_CYRILLIC);
// URLAlphabetRegistration.register(new URL(app.getCodeBase()+"jlm_greek.jar"),
// "greek",URLAlphabetRegistration.JLM_GREEK);
// URLAlphabetRegistration.register(new URL(app.getCodeBase()+"jlm_cyrillic.jar"),
// "cyrillic",URLAlphabetRegistration.JLM_CYRILLIC);
} catch (Exception e) {
e.printStackTrace();
}
LatexConvertorFactory factory = new LatexConvertorFactory(app.getKernel());
DynamicAtom.setExternalConverterFactory(factory);
}
int style = 0;
if (font.isBold()) style = style | TeXFormula.BOLD;
if (font.isItalic()) style = style | TeXFormula.ITALIC;
if (!serif) style = style | TeXFormula.SANSSERIF;
// if we're exporting, we want to draw it full resolution
// if it's a \jlmDynamic text, we don't want to add it to the cache
if (app.exporting || text.indexOf("\\jlmDynamic") > -1 || !useCache) {
// Application.debug("creating new icon for: "+text);
TeXFormula formula;
TeXIcon icon;
try {
formula = new TeXFormula(text);
if (maxWidth == null)
icon =
formula.createTeXIcon(TeXConstants.STYLE_DISPLAY, font.getSize() + 3, style, fgColor);
else
icon =
formula.createTeXIcon(
TeXConstants.STYLE_DISPLAY,
font.getSize() + 3,
TeXConstants.UNIT_CM,
maxWidth.intValue(),
TeXConstants.ALIGN_LEFT,
TeXConstants.UNIT_CM,
lineSpace.floatValue());
} catch (MyError e) {
// e.printStackTrace();
// Application.debug("MyError LaTeX parse exception: "+e.getMessage()+"\n"+text);
// Write error message to Graphics View
formula = TeXFormula.getPartialTeXFormula(text);
icon =
formula.createTeXIcon(TeXConstants.STYLE_DISPLAY, font.getSize() + 3, style, fgColor);
formula.createTeXIcon(
TeXConstants.STYLE_DISPLAY,
15,
TeXConstants.UNIT_CM,
4f,
TeXConstants.ALIGN_LEFT,
TeXConstants.UNIT_CM,
0.5f);
// Rectangle rec = drawMultiLineText(e.getMessage()+"\n"+text, x, y +
// g2.getFont().getSize(), g2);
// return new Dimension(rec.width, rec.height);
} catch (Exception e) {
// e.printStackTrace();
// Application.debug("LaTeX parse exception: "+e.getMessage()+"\n"+text);
// Write error message to Graphics View
formula = TeXFormula.getPartialTeXFormula(text);
icon =
formula.createTeXIcon(TeXConstants.STYLE_DISPLAY, font.getSize() + 3, style, fgColor);
// Rectangle rec = drawMultiLineText(e.getMessage()+"\n"+text, x, y +
// g2.getFont().getSize(), g2);
// return new Dimension(rec.width, rec.height);
}
icon.setInsets(new Insets(1, 1, 1, 1));
jl.setForeground(fgColor);
icon.paintIcon(jl, g2, x, y);
return new FormulaDimension(icon.getIconWidth(), icon.getIconHeight(), icon.getIconDepth());
}
Object key = null;
Image im = null;
try {
// if geoText != null then keep track of which key goes with the GeoText
// so that we can remove it from the cache if it changes
// eg for a (regular) dynamic LaTeX text eg "\sqrt{"+a+"}"
if (geo == null)
key =
JLaTeXMathCache.getCachedTeXFormula(
text,
TeXConstants.STYLE_DISPLAY,
style,
font.getSize() + 3 /*font size*/,
1 /* inset around the label*/,
fgColor);
else key = geo.getLaTeXCache().getCachedLaTeXKey(text, font.getSize() + 3, style, fgColor);
im = JLaTeXMathCache.getCachedTeXFormulaImage(key);
int ret[] = JLaTeXMathCache.getCachedTeXFormulaDimensions(key);
width = ret[0];
height = ret[1];
depth = ret[2];
} catch (Exception e) {
// Application.debug("LaTeX parse exception: "+e.getMessage()+"\n"+text);
// Write error message to Graphics View
TeXFormula formula = TeXFormula.getPartialTeXFormula(text);
im =
formula.createBufferedImage(
TeXConstants.STYLE_DISPLAY, font.getSize() + 3, Color.black, Color.white);
// Rectangle rec = drawMultiLineText(e.getMessage()+"\n"+text, x, y + g2.getFont().getSize(),
// g2);
// return new Dimension(rec.width, rec.height);
}
g2.drawImage(im, x, y, null);
if (width == -1) {
width = im.getWidth(null);
}
if (height == -1) {
height = im.getHeight(null);
}
return new FormulaDimension(width, height, depth);
}