int ZLTextAreaController::paragraphHeight(const ZLTextWordCursor &cursor, bool beforeCurrentPosition, SizeUnit unit) {
ZLTextWordCursor word = cursor;
word.moveToParagraphStart();
ZLTextWordCursor end = cursor;
if (!beforeCurrentPosition) {
end.moveToParagraphEnd();
}
int size = 0;
ZLTextArea::Style style(myArea, myArea.myProperties.baseStyle());
while (!word.equalElementIndex(end)) {
const ZLTextLineInfoPtr info = myArea.processTextLine(style, word, end);
word = info->End;
size += infoHeight(*info, unit);
}
return size;
}
void ZLTextView::prepareTextLine(const ZLTextLineInfo &info, int y) {
y = std::min(y + info.Height, topMargin() + textAreaHeight());
myStyle.setTextStyle(info.StartStyle, info.StartBidiLevel);
int spaceCounter = info.SpaceCounter;
int fullCorrection = 0;
const bool endOfParagraph = info.End.isEndOfParagraph();
bool wordOccured = false;
int x = lineStartMargin() + info.StartIndent;
const int fontSize = myStyle.textStyle()->fontSize();
// TODO: change metrics at font change
const ZLTextStyleEntry::Metrics metrics(fontSize, fontSize / 2, viewWidth(), textAreaHeight());
switch (myStyle.textStyle()->alignment()) {
case ALIGN_RIGHT:
if (!myStyle.baseIsRtl()) {
x += metrics.FullWidth - myStyle.textStyle()->lineEndIndent(metrics, myStyle.baseIsRtl()) - info.Width;
}
break;
case ALIGN_LEFT:
if (myStyle.baseIsRtl()) {
x += metrics.FullWidth - myStyle.textStyle()->lineEndIndent(metrics, myStyle.baseIsRtl()) - info.Width;
}
break;
case ALIGN_LINESTART:
break;
case ALIGN_CENTER:
x += (metrics.FullWidth - myStyle.textStyle()->lineEndIndent(metrics, myStyle.baseIsRtl()) - info.Width) / 2;
break;
case ALIGN_JUSTIFY:
if (!endOfParagraph && (info.End.element().kind() != ZLTextElement::AFTER_PARAGRAPH_ELEMENT)) {
fullCorrection = metrics.FullWidth - myStyle.textStyle()->lineEndIndent(metrics, myStyle.baseIsRtl()) - info.Width;
}
break;
case ALIGN_UNDEFINED:
break;
}
const ZLTextParagraphCursor ¶graph = info.RealStart.paragraphCursor();
int paragraphIndex = paragraph.index();
for (ZLTextWordCursor pos = info.RealStart; !pos.equalElementIndex(info.End); pos.nextWord()) {
const ZLTextElement &element = paragraph[pos.elementIndex()];
ZLTextElement::Kind kind = element.kind();
int width = myStyle.elementWidth(element, pos.charIndex(), metrics);
myStyle.applySingleControl(element);
switch (kind) {
case ZLTextElement::WORD_ELEMENT:
case ZLTextElement::IMAGE_ELEMENT:
{
const int height = myStyle.elementHeight(element, metrics);
const int descent = myStyle.elementDescent(element);
const int length = (kind == ZLTextElement::WORD_ELEMENT) ? ((const ZLTextWord&)element).Length - pos.charIndex() : 0;
addAreaToTextMap(
ZLTextElementArea(
paragraphIndex, pos.elementIndex(), pos.charIndex(), length, false,
myStyle.textStyle(), kind,
x, x + width - 1, y - height + 1, y + descent, myStyle.bidiLevel()
)
);
wordOccured = true;
break;
}
case ZLTextElement::CONTROL_ELEMENT:
case ZLTextElement::FORCED_CONTROL_ELEMENT:
break;
case ZLTextElement::HSPACE_ELEMENT:
case ZLTextElement::NB_HSPACE_ELEMENT:
if (wordOccured && (spaceCounter > 0)) {
int correction = fullCorrection / spaceCounter;
x += context().spaceWidth() + correction;
fullCorrection -= correction;
wordOccured = false;
--spaceCounter;
}
break;
case ZLTextElement::INDENT_ELEMENT:
case ZLTextElement::BEFORE_PARAGRAPH_ELEMENT:
case ZLTextElement::AFTER_PARAGRAPH_ELEMENT:
case ZLTextElement::EMPTY_LINE_ELEMENT:
case ZLTextElement::FIXED_HSPACE_ELEMENT:
break;
case ZLTextElement::START_REVERSED_SEQUENCE_ELEMENT:
//context().setColor(ZLColor(0, 255, 0));
//context().drawLine(visualX(x), y, visualX(x), y - 20);
break;
case ZLTextElement::END_REVERSED_SEQUENCE_ELEMENT:
flushRevertedElements(myStyle.bidiLevel());
//context().setColor(ZLColor(255, 0, 0));
//context().drawLine(visualX(x), y, visualX(x), y - 20);
break;
}
x += width;
}
if (!endOfParagraph && (info.End.element().kind() == ZLTextElement::WORD_ELEMENT)) {
int start = 0;
if (info.End.equalElementIndex(info.RealStart)) {
start = info.RealStart.charIndex();
}
const int len = info.End.charIndex() - start;
if (len > 0) {
const ZLTextWord &word = (const ZLTextWord&)info.End.element();
ZLUnicodeUtil::Ucs4String ucs4string;
ZLUnicodeUtil::utf8ToUcs4(ucs4string, word.Data, word.Size);
const bool addHyphenationSign = ucs4string[start + len - 1] != '-';
const int width = myStyle.wordWidth(word, start, len, addHyphenationSign);
const int height = myStyle.elementHeight(word, metrics);
const int descent = myStyle.elementDescent(word);
addAreaToTextMap(
ZLTextElementArea(
paragraphIndex, info.End.elementIndex(), start, len, addHyphenationSign,
myStyle.textStyle(), ZLTextElement::WORD_ELEMENT,
x, x + width - 1, y - height + 1, y + descent, word.BidiLevel
)
);
}
}
for (unsigned char i = myStyle.bidiLevel(); i > myStyle.baseBidiLevel(); --i) {
flushRevertedElements(i - 1);
}
}