// ascent + descent must not be less than this value
float maxGraphicHeight = 0;
float maxGraphicHeightWithLeading = 0;
// walk through EGA's
TextLineComponent tlc;
boolean fitTopAndBottomGraphics = false;
isSimple = true;
for (int i = 0; i < fComponents.length; i++) {
tlc = fComponents[i];
isSimple &= tlc.isSimple();
CoreMetrics cm = tlc.getCoreMetrics();
byte baseline = (byte)cm.baselineIndex;
if (baseline >= 0) {
float baselineOffset = fBaselineOffsets[baseline];
ascent = Math.max(ascent, -baselineOffset + cm.ascent);
float gd = baselineOffset + cm.descent;
descent = Math.max(descent, gd);
leading = Math.max(leading, gd + cm.leading);
}
else {
fitTopAndBottomGraphics = true;
float graphicHeight = cm.ascent + cm.descent;
float graphicHeightWithLeading = graphicHeight + cm.leading;
maxGraphicHeight = Math.max(maxGraphicHeight, graphicHeight);
maxGraphicHeightWithLeading = Math.max(maxGraphicHeightWithLeading,
graphicHeightWithLeading);
}
}
if (fitTopAndBottomGraphics) {
if (maxGraphicHeight > ascent + descent) {
descent = maxGraphicHeight - ascent;
}
if (maxGraphicHeightWithLeading > ascent + leading) {
leading = maxGraphicHeightWithLeading - ascent;
}
}
leading -= descent;
// we now know enough to compute the locs, but we need the final loc
// for the advance before we can create the metrics object
if (fitTopAndBottomGraphics) {
// we have top or bottom baselines, so expand the baselines array
// full offsets are needed by CoreMetrics.effectiveBaselineOffset
fBaselineOffsets = new float[] {
fBaselineOffsets[0],
fBaselineOffsets[1],
fBaselineOffsets[2],
descent,
-ascent
};
}
float x = 0;
float y = 0;
CoreMetrics pcm = null;
boolean needPath = false;
locs = new float[fComponents.length * 2 + 2];
for (int i = 0, n = 0; i < fComponents.length; ++i, n += 2) {
int vi = fComponentVisualOrder == null ? i : fComponentVisualOrder[i];
tlc = fComponents[vi];
CoreMetrics cm = tlc.getCoreMetrics();
if ((pcm != null) &&
(pcm.italicAngle != 0 || cm.italicAngle != 0) && // adjust because of italics
(pcm.italicAngle != cm.italicAngle ||
pcm.baselineIndex != cm.baselineIndex ||
pcm.ssOffset != cm.ssOffset)) {
// 1) compute the area of overlap - min effective ascent and min effective descent
// 2) compute the x positions along italic angle of ascent and descent for left and right
// 3) compute maximum left - right, adjust right position by this value
// this is a crude form of kerning between textcomponents
// note glyphvectors preposition glyphs based on offset,
// so tl doesn't need to adjust glyphvector position
// 1)
float pb = pcm.effectiveBaselineOffset(fBaselineOffsets);
float pa = pb - pcm.ascent;
float pd = pb + pcm.descent;
// pb += pcm.ssOffset;
float cb = cm.effectiveBaselineOffset(fBaselineOffsets);
float ca = cb - cm.ascent;
float cd = cb + cm.descent;
// cb += cm.ssOffset;
float a = Math.max(pa, ca);
float d = Math.min(pd, cd);
// 2)
float pax = pcm.italicAngle * (pb - a);
float pdx = pcm.italicAngle * (pb - d);
float cax = cm.italicAngle * (cb - a);
float cdx = cm.italicAngle * (cb - d);
// 3)
float dax = pax - cax;
float ddx = pdx - cdx;
float dx = Math.max(dax, ddx);
x += dx;
y = cb;
} else {
// no italic adjustment for x, but still need to compute y
y = cm.effectiveBaselineOffset(fBaselineOffsets); // + cm.ssOffset;
}
locs[n] = x;
locs[n+1] = y;
x += tlc.getAdvance();
pcm = cm;
needPath |= tlc.getBaselineTransform() != null;
}
// do we want italic padding at the right of the line?
if (pcm.italicAngle != 0) {
float pb = pcm.effectiveBaselineOffset(fBaselineOffsets);
float pa = pb - pcm.ascent;
float pd = pb + pcm.descent;
pb += pcm.ssOffset;
float d;
if (pcm.italicAngle > 0) {
d = pb + pcm.ascent;
} else {
d = pb - pcm.descent;
}
d *= pcm.italicAngle;
x += d;
}
locs[locs.length - 2] = x;
// locs[locs.length - 1] = 0; // final offset is always back on baseline
// ok, build fMetrics since we have the final advance
advance = x;
fMetrics = new TextLineMetrics(ascent, descent, leading, advance);
// build path if we need it
if (needPath) {
isSimple = false;
Point2D.Double pt = new Point2D.Double();
double tx = 0, ty = 0;
SegmentPathBuilder builder = new SegmentPathBuilder();
builder.moveTo(locs[0], 0);
for (int i = 0, n = 0; i < fComponents.length; ++i, n += 2) {
int vi = fComponentVisualOrder == null ? i : fComponentVisualOrder[i];
tlc = fComponents[vi];
AffineTransform at = tlc.getBaselineTransform();
if (at != null && ((at.getType() & at.TYPE_TRANSLATION) != 0)) {
double dx = at.getTranslateX();
double dy = at.getTranslateY();
builder.moveTo(tx += dx, ty += dy);
}
pt.x = locs[n+2] - locs[n];
pt.y = 0;
if (at != null) {
at.deltaTransform(pt, pt);
}
builder.lineTo(tx += pt.x, ty += pt.y);
}
lp = builder.complete();
if (lp == null) { // empty path
int vi = fComponentVisualOrder == null ? 0 : fComponentVisualOrder[0];
tlc = fComponents[vi];
AffineTransform at = tlc.getBaselineTransform();
if (at != null) {
lp = new EmptyPath(at);
}
}
}