private void alignBlockAreas(ReferenceArea r, BlockAlignment alignment) {
double measure = r.isVertical() ? r.getWidth() : r.getHeight();
double consumed = 0;
for (AreaNode c : r.getChildren()) {
consumed += c.getBPD();
}
double available = measure - consumed;
if (available > 0) {
if (alignment == BlockAlignment.BEFORE) {
AreaNode a = new BlockFillerArea(r.getElement(), 0, available);
r.addChild(a, null);
} else if (alignment == BlockAlignment.AFTER) {
AreaNode a = new BlockFillerArea(r.getElement(), 0, available);
r.insertChild(a, r.firstChild(), null);
} else if (alignment == BlockAlignment.CENTER) {
double half = available / 2;
AreaNode a1 = new BlockFillerArea(r.getElement(), 0, half);
AreaNode a2 = new BlockFillerArea(r.getElement(), 0, half);
r.insertChild(a1, r.firstChild(), null);
r.insertChild(a2, null, null);
} else {
// no-op
}
} else if (available < 0) {
r.setOverflow(-available);
}
}
private void alignLineAreas(BlockArea b, LayoutState ls) {
BlockAlignment alignment = ls.getReferenceAlignment();
ReferenceArea r = ls.getReferenceArea();
double measure = r.isVertical() ? r.getWidth() : r.getHeight();
double consumed = 0;
int numChildren = 0;
for (AreaNode c : b.getChildren()) {
consumed += c.getBPD();
++numChildren;
}
double available = measure - consumed;
if (available > 0) {
if (alignment == BlockAlignment.BEFORE) {
// no-op
} else if (alignment == BlockAlignment.AFTER) {
// no-op
} else if (alignment == BlockAlignment.CENTER) {
// no-op
} else {
justifyLineAreas(b, measure, consumed, numChildren, alignment);
}
} else if (available < 0) {
b.setOverflow(-available);
}
}
@Override
public double getAvailable(Dimension dimension) {
for (AreaNode p = getParent(); p != null; p = p.getParent()) {
if (p instanceof ReferenceArea) return p.getAvailable(dimension);
}
return super.getAvailable(dimension);
}
public LineArea getLine() {
for (AreaNode p = getParent(); p != null; p = p.getParent()) {
if (p instanceof LineArea) return (LineArea) p;
else if (p instanceof ReferenceArea) break;
}
return new LineArea();
}
@Override
public WritingMode getWritingMode() {
WritingMode wm = super.getWritingMode();
if (wm != null) {
return wm;
} else {
AreaNode p = getParent();
if (p != null) return p.getWritingMode();
else return null;
}
}
@Override
public Whitespace getWhitespace() {
Whitespace space = super.getWhitespace();
if (space != null) {
return space;
} else {
AreaNode p = getParent();
if (p != null) return p.getWhitespace();
else return null;
}
}
@Override
public String getLanguage() {
String language = super.getLanguage();
if (language != null) {
return language;
} else {
AreaNode p = getParent();
if (p != null) return p.getLanguage();
else return null;
}
}