void ZLTextView::ViewStyle::applyControls(const ZLTextWordCursor &begin, const ZLTextWordCursor &end) {
for (ZLTextWordCursor cursor = begin; !cursor.equalWordNumber(end); cursor.nextWord()) {
const ZLTextElement &element = cursor.element();
if (element.kind() == ZLTextElement::CONTROL_ELEMENT) {
applyControl((ZLTextControlElement&)element);
} else if (element.kind() == ZLTextElement::FORCED_CONTROL_ELEMENT) {
applyControl((ZLTextForcedControlElement&)element);
}
}
}
ZLTextLineInfoPtr ZLTextView::processTextLine(const ZLTextWordCursor &start, const ZLTextWordCursor &end) {
const bool useHyphenator =
ZLTextStyleCollection::instance().baseStyle().AutoHyphenationOption.value();
ZLTextLineInfoPtr infoPtr = new ZLTextLineInfo(start, myStyle.textStyle());
std::set<ZLTextLineInfoPtr>::const_iterator it = myLineInfoCache.find(infoPtr);
if (it != myLineInfoCache.end()) {
const ZLTextLineInfoPtr &storedInfo = *it;
myStyle.applyControls(storedInfo->Start, storedInfo->End);
return storedInfo;
}
ZLTextLineInfo &info = *infoPtr;
ZLTextWordCursor current = start;
const ZLTextParagraphCursor ¶graphCursor = current.paragraphCursor();
const bool isFirstLine = current.isStartOfParagraph();
if (paragraphCursor.paragraph().kind() == ZLTextParagraph::TREE_PARAGRAPH) {
info.NodeInfo = new ZLTextTreeNodeInfo();
ZLTextTreeNodeInfo &nodeInfo = *info.NodeInfo;
const ZLTextTreeParagraph &treeParagraph = (const ZLTextTreeParagraph&)paragraphCursor.paragraph();
nodeInfo.IsLeaf = treeParagraph.children().empty();
nodeInfo.IsOpen = treeParagraph.isOpen();
nodeInfo.IsFirstLine = isFirstLine;
nodeInfo.ParagraphNumber = paragraphCursor.index();
nodeInfo.VerticalLinesStack.reserve(treeParagraph.depth() - 1);
if (treeParagraph.depth() > 1) {
const ZLTextTreeParagraph *ctp = treeParagraph.parent();
nodeInfo.VerticalLinesStack.push_back(ctp->children().back() != &treeParagraph);
for (int i = 1; i < treeParagraph.depth() - 1; ++i) {
const ZLTextTreeParagraph *parent = ctp->parent();
nodeInfo.VerticalLinesStack.push_back(ctp != parent->children().back());
ctp = parent;
}
}
}
if (isFirstLine) {
ZLTextElement::Kind elementKind = paragraphCursor[current.wordNumber()].kind();
while ((elementKind == ZLTextElement::CONTROL_ELEMENT) ||
(elementKind == ZLTextElement::FORCED_CONTROL_ELEMENT)) {
const ZLTextElement &element = paragraphCursor[current.wordNumber()];
switch (elementKind) {
case ZLTextElement::CONTROL_ELEMENT:
myStyle.applyControl((const ZLTextControlElement&)element);
break;
case ZLTextElement::FORCED_CONTROL_ELEMENT:
myStyle.applyControl((const ZLTextForcedControlElement&)element);
break;
default:
break;
}
current.nextWord();
if (current.equalWordNumber(end)) {
break;
}
elementKind = paragraphCursor[current.wordNumber()].kind();
}
info.StartStyle = myStyle.textStyle();
info.RealStart = current;
}
ZLTextStylePtr storedStyle = myStyle.textStyle();
info.LeftIndent = myStyle.textStyle()->leftIndent();
if (isFirstLine) {
info.LeftIndent += myStyle.textStyle()->firstLineIndentDelta();
}
if (!info.NodeInfo.isNull()) {
info.LeftIndent += (myStyle.context().stringHeight() + 2) / 3 * 4 * (info.NodeInfo->VerticalLinesStack.size() + 1);
}
info.Width = info.LeftIndent;
if (info.RealStart.equalWordNumber(end)) {
info.End = info.RealStart;
return infoPtr;
}
ZLTextPartialInfo newInfo(info, current);
bool allowBreakAtNBSpace = true;
const int maxWidth = viewWidth() - myStyle.textStyle()->rightIndent();
bool wordOccured = false;
int lastSpaceWidth = 0;
int removeLastSpace = false;
ZLTextElement::Kind elementKind = paragraphCursor[newInfo.End.wordNumber()].kind();
bool breakedAtFirstWord = false;
do {
const ZLTextElement &element = paragraphCursor[newInfo.End.wordNumber()];
newInfo.Width += myStyle.elementWidth(element, newInfo.End.charNumber());
newInfo.Height = std::max(newInfo.Height, myStyle.elementHeight(element));
newInfo.Descent = std::max(newInfo.Descent, myStyle.elementDescent(element));
switch (elementKind) {
case ZLTextElement::CONTROL_ELEMENT:
myStyle.applyControl((const ZLTextControlElement&)element);
break;
case ZLTextElement::FORCED_CONTROL_ELEMENT:
myStyle.applyControl((const ZLTextForcedControlElement&)element);
break;
case ZLTextElement::WORD_ELEMENT:
case ZLTextElement::IMAGE_ELEMENT:
wordOccured = true;
newInfo.IsVisible = true;
break;
case ZLTextElement::HSPACE_ELEMENT:
case ZLTextElement::NB_HSPACE_ELEMENT:
if (wordOccured) {
wordOccured = false;
++newInfo.SpaceCounter;
lastSpaceWidth = myStyle.context().spaceWidth();
newInfo.Width += lastSpaceWidth;
}
break;
case ZLTextElement::EMPTY_LINE_ELEMENT:
newInfo.IsVisible = true;
default:
break;
}
if (newInfo.Width > maxWidth) {
if (!info.End.equalWordNumber(start)) {
break;
}
if (useHyphenator && myStyle.textStyle()->allowHyphenations() &&
(elementKind == ZLTextElement::WORD_ELEMENT)) {
breakedAtFirstWord = true;
break;
}
}
ZLTextElement::Kind previousKind = elementKind;
newInfo.End.nextWord();
bool allowBreak = newInfo.End.equalWordNumber(end);
bool nbspaceBreak = false;
if (!allowBreak) {
elementKind = paragraphCursor[newInfo.End.wordNumber()].kind();
if (elementKind == ZLTextElement::NB_HSPACE_ELEMENT) {
if (allowBreakAtNBSpace) {
allowBreak = true;
nbspaceBreak = true;
}
} else {
allowBreak =
((elementKind != ZLTextElement::WORD_ELEMENT) || (previousKind == ZLTextElement::WORD_ELEMENT)) &&
(elementKind != ZLTextElement::IMAGE_ELEMENT) &&
(elementKind != ZLTextElement::CONTROL_ELEMENT);
}
}
if (allowBreak) {
newInfo.setTo(info);
allowBreakAtNBSpace = nbspaceBreak;
storedStyle = myStyle.textStyle();
removeLastSpace = !wordOccured && (info.SpaceCounter > 0);
}
} while (!newInfo.End.equalWordNumber(end));
if (!newInfo.End.equalWordNumber(end) && useHyphenator &&
myStyle.textStyle()->allowHyphenations()) {
const ZLTextElement &element = paragraphCursor[newInfo.End.wordNumber()];
if (element.kind() == ZLTextElement::WORD_ELEMENT) {
const int startCharNumber = newInfo.End.charNumber();
newInfo.Width -= myStyle.elementWidth(element, startCharNumber);
const ZLTextWord &word = (ZLTextWord&)element;
int spaceLeft = maxWidth - newInfo.Width;
if (breakedAtFirstWord ||
((word.Length > 3) && (spaceLeft > 2 * myStyle.context().spaceWidth()))) {
ZLUnicodeUtil::Ucs2String ucs2string;
ZLUnicodeUtil::utf8ToUcs2(ucs2string, word.Data, word.Size);
ZLTextHyphenationInfo hyphenationInfo = ZLTextHyphenator::instance().info(word);
int hyphenationPosition = word.Length - 1;
int subwordWidth = 0;
for (; hyphenationPosition > startCharNumber; --hyphenationPosition) {
if (hyphenationInfo.isHyphenationPossible(hyphenationPosition)) {
subwordWidth = myStyle.wordWidth(word, startCharNumber, hyphenationPosition - startCharNumber, ucs2string[hyphenationPosition - 1] != '-');
if (subwordWidth <= spaceLeft) {
break;
}
}
}
if ((hyphenationPosition == startCharNumber) &&
(info.End.wordNumber() <= info.RealStart.wordNumber())) {
hyphenationPosition = word.Length;
subwordWidth = myStyle.elementWidth(element, startCharNumber);
}
if (hyphenationPosition > startCharNumber) {
newInfo.Width += subwordWidth;
newInfo.setTo(info);
storedStyle = myStyle.textStyle();
removeLastSpace = false;
info.End.setCharNumber(hyphenationPosition);
}
}
}
}
if (removeLastSpace) {
info.Width -= lastSpaceWidth;
--info.SpaceCounter;
}
myStyle.setTextStyle(storedStyle);
if (isFirstLine) {
info.Height += info.StartStyle->spaceBefore();
}
if (info.End.isEndOfParagraph()) {
info.VSpaceAfter = myStyle.textStyle()->spaceAfter();
}
if (!info.End.equalWordNumber(end) || end.isEndOfParagraph()) {
myLineInfoCache.insert(infoPtr);
}
return infoPtr;
}
