public boolean addWord(WordInfo wi) {
double nlh = wi.getLineHeight();
if (nlh <= lineHeight) return insertWord(wi);
fr.newLineHeight(nlh);
if (!updateRangeInfo()) {
if (lineHeight > 0) // restore old LH
fr.newLineHeight(lineHeight);
return false;
}
if (!insertWord(wi)) {
if (lineHeight > 0) // Failure, restore old line Height.
setLineHeight(lineHeight);
return false;
}
// Success, word fits on line.
lineHeight = nlh;
if (wi.getAscent() > ascent) ascent = wi.getAscent();
if (wi.getDescent() > descent) descent = wi.getDescent();
hLeading = (nlh - (ascent + descent)) / 2;
baseline = (float) (fr.getCurrentY() + hLeading + ascent);
return true;
}
/**
* This method updates the line height and recalculates the available flow ranges for the line.
*/
public boolean setLineHeight(double lh) {
fr.newLineHeight(lh);
if (updateRangeInfo()) {
lineHeight = lh;
return true;
}
// restore line height.
if (lineHeight > 0) fr.newLineHeight(lineHeight);
return false;
}
public LineInfo(FlowRegions fr, BlockInfo bi, boolean paraStart) {
this.fr = fr;
this.bi = bi;
this.lineHeight = bi.getLineHeight();
this.ascent = bi.getAscent();
this.descent = bi.getDescent();
this.hLeading = (lineHeight - (ascent + descent)) / 2;
this.baseline = (float) (fr.getCurrentY() + hLeading + ascent);
this.paraStart = paraStart;
this.paraEnd = false;
if (lineHeight > 0) {
fr.newLineHeight(lineHeight);
updateRangeInfo();
}
}
protected boolean updateRangeInfo() {
fr.resetRange();
int nr = fr.getNumRangeOnLine();
if (nr == 0) return false;
numRanges = nr;
if (ranges == null) {
rangeAdv = new double[numRanges];
ranges = new double[2 * numRanges];
} else if (numRanges > rangeAdv.length) {
int sz = 2 * rangeAdv.length;
if (sz < numRanges) sz = numRanges;
rangeAdv = new double[sz];
ranges = new double[2 * sz];
}
for (int r = 0; r < numRanges; r++) {
double[] rangeBounds = fr.nextRange();
// System.err.println("RG["+r+"]: [" +
// rangeBounds[0] + "," + rangeBounds[1] +"]");
double r0 = rangeBounds[0];
if (r == 0) {
double delta = bi.getLeftMargin();
if (paraStart) {
double indent = bi.getIndent();
// Limit indent to the amount of margin we have.
if (delta < -indent) delta = 0;
else delta += indent;
}
r0 += delta;
}
double r1 = rangeBounds[1];
if (r == numRanges - 1) r1 -= bi.getRightMargin();
ranges[2 * r] = r0;
ranges[2 * r + 1] = r1;
}
return true;
}
public boolean gotoY(double y) {
if (fr.gotoY(y)) return true;
if (lineHeight > 0) updateRangeInfo();
this.baseline = (float) (fr.getCurrentY() + hLeading + ascent);
return false;
}
public double getCurrentY() {
return fr.getCurrentY();
}