/*!
* Returns the rectangle for the cursor including the predictive text area.
* HbAbstractEditPrivate::ensurePositionVisible() uses the same algorithm.
*/
QRectF NmEditorTextEdit::rectForCursorPosition() const
{
NM_FUNCTION;
int cursorPos = cursorPosition();
QRectF rect = rectForPosition(cursorPos);
QTextDocument *doc = document();
if (doc) {
rect.adjust(0, -doc->documentMargin(), 0, doc->documentMargin());
const QTextBlock block = doc->findBlock(cursorPos);
QTextLayout *blockLayout = block.layout();
if (block.isValid() && blockLayout) {
if (blockLayout->preeditAreaText().length()) {
// Adjust cursor rect so that predictive text will be also visible
rect.adjust(0, 0, boundingRect().width() / 2, 0);
}
}
}
return rect;
}
QSize CustomLabel::sizeHint() const
{
#ifdef DEBUG_CUSTOMLABEL
QSize sh = QLabel::sizeHint();
//sh.setWidth(sh.width() + 1);
//sh.setHeight(sh.height() + 4);
qDebug() << "for text:" << text();
qDebug() << " size hint:" << sh;
QTextDocument *doc = textDocument();
sh = doc->documentLayout()->documentSize().toSize();
qDebug() << " doc size:" << sh;
sh += QSize(doc->documentMargin(), doc->documentMargin());
qDebug() << " doc size with margin:" << sh;
return sh;
#else
return QLabel::sizeHint();
#endif
}
void TextDocumentLayout::layoutBlock(const QTextBlock &block)
{
QTextDocument *doc = document();
qreal margin = doc->documentMargin();
qreal blockMaximumWidth = 0;
qreal height = 0;
QTextLayout *tl = block.layout();
QTextOption option = doc->defaultTextOption();
tl->setTextOption(option);
int extraMargin = 0;
if (option.flags() & QTextOption::AddSpaceForLineAndParagraphSeparators) {
QFontMetrics fm(block.charFormat().font());
extraMargin += fm.width(QChar(0x21B5));
}
tl->beginLayout();
qreal availableWidth = d->width;
if (availableWidth <= 0) {
availableWidth = qreal(INT_MAX); // similar to text edit with pageSize.width == 0
}
availableWidth -= 2*margin + extraMargin;
qreal indentMargin = 0;
while (1) {
QTextLine line = tl->createLine();
if (!line.isValid())
break;
line.setLeadingIncluded(true);
line.setLineWidth(availableWidth - indentMargin);
line.setPosition(QPointF(margin + indentMargin, height));
if(!height) //enter only in the first iteration
{
indentMargin = indentWidth(block);
}
height += line.height();
blockMaximumWidth = qMax(blockMaximumWidth, line.naturalTextWidth() + 2*margin);
}
tl->endLayout();
int previousLineCount = doc->lineCount();
const_cast<QTextBlock&>(block).setLineCount(block.isVisible() ? tl->lineCount() : 0);
int lineCount = doc->lineCount();
bool emitDocumentSizeChanged = previousLineCount != lineCount;
if (blockMaximumWidth > d->maximumWidth) {
// new longest line
d->maximumWidth = blockMaximumWidth;
d->maximumWidthBlockNumber = block.blockNumber();
emitDocumentSizeChanged = true;
} else if (block.blockNumber() == d->maximumWidthBlockNumber && blockMaximumWidth < d->maximumWidth) {
// longest line shrinking
QTextBlock b = doc->firstBlock();
d->maximumWidth = 0;
QTextBlock maximumBlock;
while (b.isValid()) {
qreal blockMaximumWidth = blockWidth(b);
if (blockMaximumWidth > d->maximumWidth) {
d->maximumWidth = blockMaximumWidth;
maximumBlock = b;
}
b = b.next();
}
if (maximumBlock.isValid()) {
d->maximumWidthBlockNumber = maximumBlock.blockNumber();
emitDocumentSizeChanged = true;
}
}
if (emitDocumentSizeChanged)// && !d->blockDocumentSizeChanged)
emit documentSizeChanged(documentSize());
emit updateBlock(block);
}
/*! \reimp
*/
void TextDocumentLayout::documentChanged(int from, int /*charsRemoved*/, int charsAdded)
{
QTextDocument *doc = document();
int newBlockCount = doc->blockCount();
QTextBlock changeStartBlock = doc->findBlock(from);
QTextBlock changeEndBlock = doc->findBlock(qMax(0, from + charsAdded - 1));
if (changeStartBlock == changeEndBlock && newBlockCount == d->blockCount) {
QTextBlock block = changeStartBlock;
if (block.isValid() && block.layout()->lineCount()) {
QRectF oldBr = blockBoundingRect(block);
layoutBlock(block);
QRectF newBr = blockBoundingRect(block);
if (newBr.height() == oldBr.height()) {
if (!d->blockUpdate)
emit updateBlock(block);
return;
}
}
} else {
QTextBlock block = changeStartBlock;
do {
block.clearLayout();
if (block == changeEndBlock)
break;
block = block.next();
} while(block.isValid());
}
if (newBlockCount != d->blockCount) {
int changeEnd = changeEndBlock.blockNumber();
int blockDiff = newBlockCount - d->blockCount;
int oldChangeEnd = changeEnd - blockDiff;
if (d->maximumWidthBlockNumber > oldChangeEnd)
d->maximumWidthBlockNumber += blockDiff;
d->blockCount = newBlockCount;
if (d->blockCount == 1)
d->maximumWidth = blockWidth(doc->firstBlock());
if (!d->blockDocumentSizeChanged)
emit documentSizeChanged(documentSize());
if (blockDiff == 1 && changeEnd == newBlockCount -1 ) {
if (!d->blockUpdate)
{
QTextBlock b = changeStartBlock;
for(;;) {
emit updateBlock(b);
if (b == changeEndBlock)
break;
b = b.next();
}
}
return;
}
}
if (!d->blockUpdate)
emit update(QRectF(0., -doc->documentMargin(), 1000000000., 1000000000.)); // optimization potential
}
void AATextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget){
if (hasFocus()){
QGraphicsTextItem::paint(painter, option, widget);
return;
}
painter->setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
QPainterPath path;
QString s = toPlainText();
QTextDocument *doc = document();
qreal margin = doc->documentMargin();
QStringList lines = s.split("\n", QString::SkipEmptyParts);
QFont f = font();
f.setStyleHint(QFont::AnyStyle, QFont::PreferAntialias);
QFontMetrics fm(f);
QFont f_bold = f;
f_bold.setBold(true);
QFontMetrics fm_bold(f_bold);
int line = 0;
for (int i = 0; i < lines.length(); i++){
QString thisline = lines[i];
QStringList s1 = thisline.split(']', QString::SkipEmptyParts);
QStringList s_non_bold, s_bold;
foreach(QString s, s1){
if (!s.contains('[')){
s_non_bold << s;
s_bold << QString();
}
else if (!s.startsWith('[')){
QStringList s2 = s.split('[', QString::SkipEmptyParts);
s_non_bold << s2.first();
s_bold << s2.last();
}
else {
s = s.mid(1);
s_non_bold << QString();
s_bold << s;
}
}
int width = 0;
for (int j = 0; j < s_non_bold.length(); j++){
QString non_bold = s_non_bold[j];
for (int k = 0; k < non_bold.length(); k++){
QChar c = non_bold[k];
QString str = c;
int width_c = fm.width(str);
if (width + width_c > doc->size().width()){
++line;
width = 0;
}
path.addText(margin + width, fm.height() * (line + 1), f, str);
width += width_c;
}
QString bold = s_bold[j];
for (int k = 0; k < bold.length(); k++){
QChar c = bold[k];
QString str = c;
int width_c = fm_bold.width(str);
if (width + width_c > doc->size().width()){
++line;
width = 0;
}
path.addText(margin + width, fm.height() * (line + 1), f_bold, str); //use fm.height not fm_bold.height, for sometimes the bold characters are not as high as the non-bold ones
width += width_c;
}
}
++line;
}
painter->fillPath(path, defaultTextColor());
}
