/** @param sep the pane where to remove the LaTeXViewer */
public static void removeLaTeXViewer(JTextComponent tc) {
if (viewer.icon != null) {
viewer.icon = null;
viewer.setVisible(false);
tc.remove(viewer);
tc.repaint();
}
}
/**
* @param sep the pane where to display the LaTeX
* @param exp the expression
* @param b the beginning of the expression
* @param e the end of the expression
*/
public static int displayExpression(
JTextComponent tc, int totalHeight, String exp, int b, int e) {
String latex = exp;
if (exp.startsWith("$") || exp.startsWith("\"$") || exp.startsWith("'$")) {
int n = 1;
// We have $...$ or "$...$"
if (exp.charAt(0) != '$') {
n = 2;
}
latex = exp.substring(n, exp.length() - n);
}
viewer.icon = ScilabSpecialTextUtilities.compilePartialLaTeXExpression(latex, defaultSize);
if (viewer.icon == null) {
return 0;
}
width = viewer.icon.getIconWidth();
height = viewer.icon.getIconHeight();
viewer.setSize(width + 2 * INSET, height + 2 * INSET);
tc.add(viewer);
Rectangle begin;
Rectangle end;
try {
begin = tc.modelToView(b);
end = tc.modelToView(e);
} catch (BadLocationException ex) {
begin = NULLRECT;
end = NULLRECT;
}
int abs;
int ord;
if (begin.y == end.y) {
// We're on the same line
abs = Math.max(1, (end.x + begin.x - width) / 2);
ord = begin.y + begin.height + 1;
if (height + ord > totalHeight) {
ord = begin.y - 1 - height - 2 * INSET;
}
} else if (begin.y + begin.height == end.y) {
// The line is drawn on two lines
ord = end.y + end.height + 1;
if (height + ord > totalHeight) {
ord = begin.y - 1 - height - 2 * INSET;
abs = begin.x;
} else {
abs = end.x;
}
} else {
// Guess
abs = Math.max(1, (tc.getWidth() - width) / 2);
ord = end.y + end.height + 1;
if (height + ord > totalHeight) {
ord = begin.y - 1 - height - 2 * INSET;
}
}
viewer.setLocation(abs, ord);
viewer.setVisible(true);
viewer.repaint();
return height + 2 * INSET;
}