protected void processRowLevelNode(final RenderNode node) {
assert (node instanceof FinishedRenderNode);
node.setCachedX(computeRowPosition(node));
node.setCachedWidth(node.getMaximumBoxWidth());
nodeContext.updateParentX2(node.getCachedX2());
}
public void performLastLineAlignment() {
if (pagebreakCount == 0) {
throw new IllegalStateException("Alignment processor has not been initialized correctly.");
}
Arrays.fill(elementDimensions, 0);
Arrays.fill(elementPositions, 0);
int lastPosition = iterate(sequenceElements, sequenceFill);
if (lastPosition == 0) {
// This could evolve into an infinite loop. Thats evil.
// We have two choices to prevent that:
// (1) Try to break the element.
// if (getBreakableIndex() >= 0)
// {
// // Todo: Breaking is not yet implemented ..
// }
if (getSkipIndex() >= 0) {
// This causes an overflow ..
performSkipAlignment(getSkipIndex());
lastPosition = getSkipIndex();
} else {
// Skip the complete line. Oh, thats not good, really!
lastPosition = sequenceFill;
}
}
// the elements up to the 'lastPosition' are now aligned according to the alignment rules.
// now, update the element's positions and dimensions ..
if (lastPosition == sequenceFill || lastLineAlignment) {
// First, the simple case: The line's content did fully fit into the linebox. No linebreaks
// were necessary.
RenderBox firstBox = null;
for (int i = 0; i < lastPosition; i++) {
final RenderNode node = nodes[i];
final InlineSequenceElement element = sequenceElements[i];
if (element instanceof EndSequenceElement) {
final long boxX2 = (elementPositions[i] + elementDimensions[i]);
final RenderBox box = (RenderBox) node;
box.setCachedWidth(boxX2 - box.getCachedX());
continue;
}
if (element instanceof StartSequenceElement) {
final RenderBox box = (RenderBox) node;
box.setCachedX(elementPositions[i]);
if (firstBox == null) {
firstBox = box;
}
continue;
}
// Content element: Perform a deep-deriveForAdvance, so that we preserve the
// possibly existing sub-nodes.
node.setCachedX(elementPositions[i]);
node.setCachedWidth(elementDimensions[i]);
}
return;
}
// The second case is more complicated. The text did not fit fully into the text-element.
// Left align all elements after the layouted content ..
if (leftAlignProcessor == null) {
leftAlignProcessor = new LeftAlignmentProcessor();
}
leftAlignProcessor.initializeForLastLineAlignment(this);
leftAlignProcessor.performLastLineAlignment();
leftAlignProcessor.deinitialize();
}
public RenderBox next() {
cleanFirstSpacers();
Arrays.fill(elementDimensions, 0);
Arrays.fill(elementPositions, 0);
int lastPosition = iterate(sequenceElements, sequenceFill);
if (lastPosition == 0) {
// This could evolve into an infinite loop. Thats evil.
// We have two choices to prevent that:
// (1) Try to break the element.
// if (getBreakableIndex() >= 0)
// {
// // Todo: Breaking is not yet implemented ..
// }
if (getSkipIndex() >= 0) {
// This causes an overflow ..
performSkipAlignment(getSkipIndex());
lastPosition = getSkipIndex();
} else {
// Skip the complete line. Oh, thats not good, really!
lastPosition = sequenceFill;
}
}
// now, build the line and update the array ..
pendingElements.clear();
contexts.clear();
RenderBox firstBox = null;
RenderBox box = null;
for (int i = 0; i < lastPosition; i++) {
final RenderNode node = nodes[i];
final InlineSequenceElement element = sequenceElements[i];
if (element instanceof EndSequenceElement) {
contexts.pop();
final long boxX2 = (elementPositions[i] + elementDimensions[i]);
box.setCachedWidth(boxX2 - box.getCachedX());
if (contexts.isEmpty()) {
box = null;
} else {
final RenderNode tmpnode = box;
box = contexts.peek();
box.addGeneratedChild(tmpnode);
}
continue;
}
if (element instanceof StartSequenceElement) {
box = (RenderBox) node.derive(false);
box.setCachedX(elementPositions[i]);
contexts.push(box);
if (firstBox == null) {
firstBox = box;
}
continue;
}
if (box == null) {
throw new IllegalStateException(
"Invalid sequence: " + "Cannot have elements before we open the box context.");
}
// Content element: Perform a deep-deriveForAdvance, so that we preserve the
// possibly existing sub-nodes.
final RenderNode child = node.derive(true);
child.setCachedX(elementPositions[i]);
child.setCachedWidth(elementDimensions[i]);
if (box.getStaticBoxLayoutProperties().isPreserveSpace()
&& box.getStyleSheet().getBooleanStyleProperty(TextStyleKeys.TRIM_TEXT_CONTENT)
== false) {
// Take a shortcut as we know that we will never have any pending elements if preserve is
// true and
// trim-content is false.
box.addGeneratedChild(child);
continue;
}
if (child.isIgnorableForRendering()) {
pendingElements.add(child);
} else {
for (int j = 0; j < pendingElements.size(); j++) {
final RenderNode pendingNode = pendingElements.get(j);
box.addGeneratedChild(pendingNode);
}
pendingElements.clear();
box.addGeneratedChild(child);
}
}
// Remove all spacers and other non printable content that might
// look ugly at the beginning of a new line ..
for (; lastPosition < sequenceFill; lastPosition++) {
final RenderNode node = nodes[lastPosition];
final StyleSheet styleSheet = node.getStyleSheet();
if (WhitespaceCollapse.PRESERVE.equals(
styleSheet.getStyleProperty(TextStyleKeys.WHITE_SPACE_COLLAPSE))
&& styleSheet.getBooleanStyleProperty(TextStyleKeys.TRIM_TEXT_CONTENT) == false) {
break;
}
if (node.isIgnorableForRendering() == false) {
break;
}
}
// If there are open contexts, then add the split-result to the new line
// and update the width of the current line
RenderBox previousContext = null;
final int openContexts = contexts.size();
for (int i = 0; i < openContexts; i++) {
final RenderBox renderBox = contexts.get(i);
final long cachedWidth = getEndOfLine() - renderBox.getCachedX();
renderBox.setCachedWidth(cachedWidth);
final InlineRenderBox rightBox =
(InlineRenderBox) renderBox.split(RenderNode.HORIZONTAL_AXIS);
sequenceElements[i] = StartSequenceElement.INSTANCE;
nodes[i] = rightBox;
if (previousContext != null) {
previousContext.addGeneratedChild(renderBox);
}
previousContext = renderBox;
}
final int length = sequenceFill - lastPosition;
System.arraycopy(sequenceElements, lastPosition, sequenceElements, openContexts, length);
System.arraycopy(nodes, lastPosition, nodes, openContexts, length);
sequenceFill = openContexts + length;
Arrays.fill(sequenceElements, sequenceFill, sequenceElements.length, null);
Arrays.fill(nodes, sequenceFill, nodes.length, null);
return firstBox;
}
protected void processTableRowLevelNode(final RenderNode node) {
assert (node instanceof FinishedRenderNode);
node.setCachedX(nodeContext.getX1());
node.setCachedWidth(nodeContext.getContentAreaWidth());
}
