/**
* This is called by the nested wrapped line views to determine the break location. This can be
* reimplemented to alter the breaking behavior. It will either break at word or character
* boundaries depending upon the break argument given at construction.
*/
protected int calculateBreakPosition(int p0, Token tokenList, float x0) {
// System.err.println("------ beginning calculateBreakPosition() --------");
int p = p0;
RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
float currentWidth = getWidth();
if (currentWidth == Integer.MAX_VALUE) currentWidth = getPreferredSpan(X_AXIS);
// Make sure width>0; this is a huge hack to fix a bug where
// loading text into an RTextArea before it is visible if word wrap
// is enabled causes an infinite loop in calculateBreakPosition()
// because of the 0-width! We cannot simply check in setSize()
// because the width is set to 0 somewhere else too somehow...
currentWidth = Math.max(currentWidth, MIN_WIDTH);
Token t = tokenList;
while (t != null && t.isPaintable()) {
// FIXME: Replace the code below with the commented-out line below. This will
// allow long tokens to be broken at embedded spaces (such as MLC's). But it
// currently throws BadLocationExceptions sometimes...
float tokenWidth = t.getWidth(textArea, this, x0);
if (tokenWidth > currentWidth) {
// If the current token alone is too long for this line,
// break at a character boundary.
if (p == p0) {
return t.getOffsetBeforeX(textArea, this, 0, currentWidth);
}
// Return the first non-whitespace char (i.e., don't start
// off the continuation of a wrapped line with whitespace).
return t.isWhitespace() ? p + t.length() : p;
// return getBreakLocation(t, fm, x0, currentWidth, this);
}
currentWidth -= tokenWidth;
x0 += tokenWidth;
p += t.length();
// System.err.println("*** *** *** token fit entirely (width==" + tokenWidth + "), adding " +
// t.textCount + " to p, now p==" + p);
t = t.getNextToken();
}
// System.err.println("... ... whole line fits; returning p==" + p);
// System.err.println("------ ending calculateBreakPosition() --------");
// return p;
return p + 1;
}