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);
}
}
protected void layoutBody(Element e, LayoutState ls) {
ls.pushBlock(e);
for (Element c : getChildElements(e)) {
if (isElement(c, ttDivisionElementName)) layoutDivision(c, ls);
}
ls.pop();
}
protected List<Area> layoutISDInstance(Element e, LayoutState ls) {
List<Area> areas = new java.util.ArrayList<Area>();
try {
double begin = Double.parseDouble(e.getAttribute("begin"));
double end = Double.parseDouble(e.getAttribute("end"));
Extent cellResolution =
parseCellResolution(Documents.getAttribute(e, ttpCellResolutionAttrName, null));
if (cellResolution == null) cellResolution = defaults.getCellResolution();
ls.pushCanvas(e, begin, end, cellResolution);
Extent extent = ls.getExternalExtent();
double w = extent.getWidth();
double h = extent.getHeight();
boolean clip = ls.getExternalOverflow().clips();
ls.pushViewport(e, w, h, clip);
WritingMode wm = ls.getExternalWritingMode();
TransformMatrix ctm = ls.getExternalTransform();
ls.pushReference(e, 0, 0, w, h, wm, ctm);
for (Element c : getChildElements(e)) {
if (isElement(c, isdRegionElementName)) layoutRegion(c, ls);
else if (isElement(c, isdComputedStyleSetElementName)) ls.saveStyles(c);
}
ls.pop();
ls.pop();
areas.add(ls.pop());
} catch (NumberFormatException x) {
}
return areas;
}
protected void layoutParagraph(Paragraph p, LayoutState ls) {
ls.pushBlock(p.getElement());
for (LineArea l : new ParagraphLayout(p, ls).layout()) {
ls.addLine(l);
}
AreaNode b = ls.peek();
if (b instanceof BlockArea) alignLineAreas((BlockArea) b, ls);
ls.pop();
}
protected void layoutDivision(Element e, LayoutState ls) {
ls.pushBlock(e);
for (Element c : getChildElements(e)) {
if (isElement(c, ttDivisionElementName)) {
layoutDivision(c, ls);
} else if (isElement(c, ttParagraphElementName)) {
layoutParagraph(c, ls);
}
}
ls.pop();
}
private StyleCollector newStyleCollector(LayoutState ls) {
return new StyleCollector(
context,
ls.getFontCache(),
defaults,
ls.getExternalExtent(),
ls.getReferenceExtent(),
ls.getCellResolution(),
ls.getWritingMode(),
ls.getLanguage(),
ls.getFont(),
ls.getStyles());
}
protected void layoutRegion(Element e, LayoutState ls) {
Extent extent = ls.getExtent(e);
double w = extent.getWidth();
double h = extent.getHeight();
Point origin = ls.getPosition(e, extent);
double x = origin.getX();
double y = origin.getY();
boolean clip = ls.getOverflow(e).clips();
ls.pushViewport(e, w, h, clip);
WritingMode wm = ls.getWritingMode(e);
TransformMatrix ctm = ls.getTransform(e);
ls.pushReference(e, x, y, w, h, wm, ctm);
for (Element c : getChildElements(e)) {
if (isElement(c, ttBodyElementName)) layoutBody(c, ls);
}
AreaNode r = ls.peek();
if (r instanceof ReferenceArea) alignBlockAreas((ReferenceArea) r, ls.getReferenceAlignment());
ls.pop();
ls.pop();
}
private void warnOnCounterViolations(LayoutState ls) {
Reporter reporter = context.getReporter();
ls.finalizeCounters();
int regions = ls.getCounter(LayoutState.Counter.REGIONS_IN_CANVAS);
if ((maxRegions >= 0) && (regions > maxRegions))
reporter.logWarning(
reporter.message(
"*KEY*",
"Regions per canvas limit exceeded, {0} present, must not exceed {1}.",
regions,
maxRegions));
int lines = ls.getCounter(LayoutState.Counter.LINES_IN_CANVAS);
if ((maxLines >= 0) && (lines > maxLines))
reporter.logWarning(
reporter.message(
"*KEY*",
"Lines per canvas limit exceeded, {0} present, must not exceed {1}.",
lines,
maxLines));
int linesPerRegion = ls.getCounter(LayoutState.Counter.MAX_LINES_IN_REGION);
if ((maxLinesPerRegion >= 0) && (linesPerRegion > maxLinesPerRegion))
reporter.logWarning(
reporter.message(
"*KEY*",
"Lines per region limit exceeded, {0} present, must not exceed {1}.",
linesPerRegion,
maxLinesPerRegion));
int chars = ls.getCounter(LayoutState.Counter.CHARS_IN_CANVAS);
if ((maxChars >= 0) && (chars > maxChars))
reporter.logWarning(
reporter.message(
"*KEY*",
"Characters per canvas limit exceeded, {0} present, must not exceed {1}.",
chars,
maxChars));
int charsPerRegion = ls.getCounter(LayoutState.Counter.MAX_CHARS_IN_REGION);
if ((maxCharsPerRegion >= 0) && (charsPerRegion > maxCharsPerRegion))
reporter.logWarning(
reporter.message(
"*KEY*",
"Characters per region limit exceeded, {0} present, must not exceed {1}.",
charsPerRegion,
maxCharsPerRegion));
int charsPerLine = ls.getCounter(LayoutState.Counter.MAX_CHARS_IN_LINE);
if ((maxCharsPerLine >= 0) && (charsPerLine > maxCharsPerLine))
reporter.logWarning(
reporter.message(
"*KEY*",
"Characters per line limit exceeded, {0} present, must not exceed {1}.",
charsPerLine,
maxCharsPerLine));
}
protected LayoutState initializeLayoutState(LayoutState ls) {
return ls.initialize(
fontCache, getLineBreakIterator(), getCharacterBreakIterator(), getDefaults());
}
