void YTDelegate::layoutText(QTextLayout& textLayout, QString text, QSize constraint) const
{
QTextOption textOption(Qt::AlignJustify);
textLayout.setTextOption(textOption);
textLayout.setText(text);
textLayout.beginLayout();
int lHeight = 0;
while(true){
QTextLine line = textLayout.createLine();
if(!line.isValid())
break;
line.setLineWidth(constraint.width());
line.setPosition(QPointF(0, lHeight));
if(lHeight + line.height() > constraint.height())
{
QTextLine lastLine = textLayout.lineAt(textLayout.lineCount() - 2);
QString lastString = text.mid(lastLine.textStart());
QFontMetrics fm(textLayout.font());
text.chop(lastString.length());
text += fm.elidedText(lastString, Qt::ElideRight, constraint.width()-1);
textLayout.endLayout();
layoutText(textLayout, text, constraint);
return;
}
lHeight += line.height();
lHeight += line.leading();
}
textLayout.endLayout();
}
void TextLabel::layoutText(QTextLayout &layout, const QString &text, const QSize &constraints)
{
QFontMetrics metrics(layout.font());
int leading = metrics.leading();
int height = 0;
int maxWidth = constraints.width();
int widthUsed = 0;
int lineSpacing = metrics.lineSpacing();
QTextLine line;
layout.setText(text);
layout.beginLayout();
while ((line = layout.createLine()).isValid()) {
height += leading;
// Make the last line that will fit infinitely long.
// drawTextLayout() will handle this by fading the line out
// if it won't fit in the constraints.
if (height + 2 * lineSpacing > constraints.height()) {
line.setPosition(QPoint(0, height));
break;
}
line.setLineWidth(maxWidth);
line.setPosition(QPoint(0, height));
height += int(line.height());
widthUsed = int(qMax(qreal(widthUsed), line.naturalTextWidth()));
}
layout.endLayout();
}
// Origin: Qt
static void viewItemTextLayout ( QTextLayout &textLayout, int lineWidth, qreal &height, qreal &widthUsed )
{
height = 0;
widthUsed = 0;
textLayout.beginLayout();
while ( true )
{
QTextLine line = textLayout.createLine();
if ( !line.isValid() )
break;
line.setLineWidth ( lineWidth );
line.setPosition ( QPointF ( 0, height ) );
height += line.height();
widthUsed = qMax ( widthUsed, line.naturalTextWidth() );
}
textLayout.endLayout();
}
void tst_QRawFont::unsupportedWritingSystem()
{
QFETCH(QFont::HintingPreference, hintingPreference);
QFontDatabase fontDatabase;
int id = fontDatabase.addApplicationFont(QLatin1String(SRCDIR "testfont.ttf"));
QFont font("QtBidiTestFont");
font.setHintingPreference(hintingPreference);
font.setPixelSize(12.0);
QRawFont rawFont = QRawFont::fromFont(font, QFontDatabase::Any);
QCOMPARE(rawFont.familyName(), QString::fromLatin1("QtBidiTestFont"));
QCOMPARE(rawFont.pixelSize(), 12.0);
rawFont = QRawFont::fromFont(font, QFontDatabase::Hebrew);
QCOMPARE(rawFont.familyName(), QString::fromLatin1("QtBidiTestFont"));
QCOMPARE(rawFont.pixelSize(), 12.0);
QString arabicText = QFontDatabase::writingSystemSample(QFontDatabase::Arabic);
QTextLayout layout;
layout.setFont(font);
layout.setText(arabicText);
layout.beginLayout();
layout.createLine();
layout.endLayout();
QList<QGlyphRun> glyphRuns = layout.glyphRuns();
QCOMPARE(glyphRuns.size(), 1);
QGlyphRun glyphs = glyphRuns.at(0);
QRawFont layoutFont = glyphs.rawFont();
QVERIFY(layoutFont.familyName() != QString::fromLatin1("QtBidiTestFont"));
QCOMPARE(layoutFont.pixelSize(), 12.0);
rawFont = QRawFont::fromFont(font, QFontDatabase::Arabic);
QCOMPARE(rawFont.familyName(), layoutFont.familyName());
QCOMPARE(rawFont.pixelSize(), 12.0);
fontDatabase.removeApplicationFont(id);
}
qreal QmlConsoleItemDelegate::layoutText(QTextLayout &tl, int width,
bool *showFileLineInfo) const
{
qreal height = 0;
tl.beginLayout();
while (true) {
QTextLine line = tl.createLine();
if (!line.isValid())
break;
line.setLeadingIncluded(true);
line.setLineWidth(width);
if (width < line.naturalTextWidth() && showFileLineInfo)
*showFileLineInfo = false;
line.setPosition(QPoint(0, height));
height += line.height();
}
tl.endLayout();
return height;
}
/// Calculate single line layout for given text with specified font.
/// This function automatically add ellipsis text if the naural width
/// is larger than given region.
/// \layout The result layout.
/// \font The font object.
/// \string The text needs to be layouted.
/// \align Alignment.
/// \rect The region.
/// \ellipsis Add ellipse to left or right if necessary.
/// Returns the line height.
int calculateSingleLineLayout(QTextLayout & layout,
const QFont & font,
const QString & string,
const Qt::Alignment align,
const QRect & rect,
const Qt::TextElideMode ellipsis)
{
QFontMetrics fm(font);
// Check if we need to add ellipsis.
QString result_string = string;
int width = ellipsisText(string, fm, rect.width(),
ellipsis, result_string);
// Construct the layout.
layout.clearLayout();
layout.setCacheEnabled(false);
layout.setText(result_string);
layout.setFont(font);
layout.beginLayout();
QTextLine line = layout.createLine();
if (line.isValid())
{
line.setLineWidth(rect.width());
}
layout.endLayout();
// Calculate the position.
int x = rect.left();
int y = rect.top();
int h = static_cast<int>(line.height());
if (align & Qt::AlignHCenter)
{
x = ((rect.width() - width) >> 1) + x;
}
void QStaticTextPrivate::paintText(const QPointF &topLeftPosition, QPainter *p)
{
bool preferRichText = textFormat == Qt::RichText
|| (textFormat == Qt::AutoText && Qt::mightBeRichText(text));
if (!preferRichText) {
QTextLayout textLayout;
textLayout.setText(text);
textLayout.setFont(font);
textLayout.setTextOption(textOption);
qreal leading = QFontMetricsF(font).leading();
qreal height = -leading;
textLayout.beginLayout();
while (1) {
QTextLine line = textLayout.createLine();
if (!line.isValid())
break;
if (textWidth >= 0.0)
line.setLineWidth(textWidth);
height += leading;
line.setPosition(QPointF(0.0, height));
height += line.height();
}
textLayout.endLayout();
actualSize = textLayout.boundingRect().size();
textLayout.draw(p, topLeftPosition);
} else {
QTextDocument document;
#ifndef QT_NO_CSSPARSER
QColor color = p->pen().color();
document.setDefaultStyleSheet(QString::fromLatin1("body { color: #%1%2%3 }")
.arg(QString::number(color.red(), 16), 2, QLatin1Char('0'))
.arg(QString::number(color.green(), 16), 2, QLatin1Char('0'))
.arg(QString::number(color.blue(), 16), 2, QLatin1Char('0')));
#endif
document.setDefaultFont(font);
document.setDocumentMargin(0.0);
#ifndef QT_NO_TEXTHTMLPARSER
document.setHtml(text);
#else
document.setPlainText(text);
#endif
if (textWidth >= 0.0)
document.setTextWidth(textWidth);
else
document.adjustSize();
document.setDefaultTextOption(textOption);
p->save();
p->translate(topLeftPosition);
QAbstractTextDocumentLayout::PaintContext ctx;
ctx.palette.setColor(QPalette::Text, p->pen().color());
document.documentLayout()->draw(p, ctx);
p->restore();
if (textWidth >= 0.0)
document.adjustSize(); // Find optimal size
actualSize = document.size();
}
}
void QQuickTextNodeEngine::addTextBlock(QTextDocument *textDocument, const QTextBlock &block, const QPointF &position, const QColor &textColor, const QColor &anchorColor, int selectionStart, int selectionEnd)
{
Q_ASSERT(textDocument);
#ifndef QT_NO_IM
int preeditLength = block.isValid() ? block.layout()->preeditAreaText().length() : 0;
int preeditPosition = block.isValid() ? block.layout()->preeditAreaPosition() : -1;
#endif
QVarLengthArray<QTextLayout::FormatRange> colorChanges;
mergeFormats(block.layout(), &colorChanges);
QPointF blockPosition = textDocument->documentLayout()->blockBoundingRect(block).topLeft() + position;
if (QTextList *textList = block.textList()) {
QPointF pos = blockPosition;
QTextLayout *layout = block.layout();
if (layout->lineCount() > 0) {
QTextLine firstLine = layout->lineAt(0);
Q_ASSERT(firstLine.isValid());
setCurrentLine(firstLine);
QRectF textRect = firstLine.naturalTextRect();
pos += textRect.topLeft();
if (block.textDirection() == Qt::RightToLeft)
pos.rx() += textRect.width();
const QTextCharFormat charFormat = block.charFormat();
QFont font(charFormat.font());
QFontMetricsF fontMetrics(font);
QTextListFormat listFormat = textList->format();
QString listItemBullet;
switch (listFormat.style()) {
case QTextListFormat::ListCircle:
listItemBullet = QChar(0x25E6); // White bullet
break;
case QTextListFormat::ListSquare:
listItemBullet = QChar(0x25AA); // Black small square
break;
case QTextListFormat::ListDecimal:
case QTextListFormat::ListLowerAlpha:
case QTextListFormat::ListUpperAlpha:
case QTextListFormat::ListLowerRoman:
case QTextListFormat::ListUpperRoman:
listItemBullet = textList->itemText(block);
break;
default:
listItemBullet = QChar(0x2022); // Black bullet
break;
};
QSizeF size(fontMetrics.width(listItemBullet), fontMetrics.height());
qreal xoff = fontMetrics.width(QLatin1Char(' '));
if (block.textDirection() == Qt::LeftToRight)
xoff = -xoff - size.width();
setPosition(pos + QPointF(xoff, 0));
QTextLayout layout;
layout.setFont(font);
layout.setText(listItemBullet); // Bullet
layout.beginLayout();
QTextLine line = layout.createLine();
line.setPosition(QPointF(0, 0));
layout.endLayout();
QList<QGlyphRun> glyphRuns = layout.glyphRuns();
for (int i=0; i<glyphRuns.size(); ++i)
addUnselectedGlyphs(glyphRuns.at(i));
}
}
int textPos = block.position();
QTextBlock::iterator blockIterator = block.begin();
while (!blockIterator.atEnd()) {
QTextFragment fragment = blockIterator.fragment();
QString text = fragment.text();
if (text.isEmpty())
continue;
QTextCharFormat charFormat = fragment.charFormat();
QFont font(charFormat.font());
QFontMetricsF fontMetrics(font);
int fontHeight = fontMetrics.descent() + fontMetrics.ascent();
int valign = charFormat.verticalAlignment();
if (valign == QTextCharFormat::AlignSuperScript)
setPosition(QPointF(blockPosition.x(), blockPosition.y() - fontHeight / 2));
else if (valign == QTextCharFormat::AlignSubScript)
setPosition(QPointF(blockPosition.x(), blockPosition.y() + fontHeight / 6));
else
setPosition(blockPosition);
if (text.contains(QChar::ObjectReplacementCharacter)) {
QTextFrame *frame = qobject_cast<QTextFrame *>(textDocument->objectForFormat(charFormat));
if (frame && frame->frameFormat().position() == QTextFrameFormat::InFlow) {
int blockRelativePosition = textPos - block.position();
QTextLine line = block.layout()->lineForTextPosition(blockRelativePosition);
if (!currentLine().isValid()
|| line.lineNumber() != currentLine().lineNumber()) {
setCurrentLine(line);
}
QQuickTextNodeEngine::SelectionState selectionState =
(selectionStart < textPos + text.length()
&& selectionEnd >= textPos)
? QQuickTextNodeEngine::Selected
: QQuickTextNodeEngine::Unselected;
addTextObject(QPointF(), charFormat, selectionState, textDocument, textPos);
}
textPos += text.length();
} else {
if (charFormat.foreground().style() != Qt::NoBrush)
setTextColor(charFormat.foreground().color());
else if (charFormat.isAnchor())
setTextColor(anchorColor);
else
setTextColor(textColor);
int fragmentEnd = textPos + fragment.length();
#ifndef QT_NO_IM
if (preeditPosition >= 0
&& (preeditPosition + block.position()) >= textPos
&& (preeditPosition + block.position()) <= fragmentEnd) {
fragmentEnd += preeditLength;
}
#endif
if (charFormat.background().style() != Qt::NoBrush) {
QTextLayout::FormatRange additionalFormat;
additionalFormat.start = textPos - block.position();
additionalFormat.length = fragmentEnd - textPos;
additionalFormat.format = charFormat;
colorChanges << additionalFormat;
}
textPos = addText(block, charFormat, textColor, colorChanges, textPos, fragmentEnd,
selectionStart, selectionEnd);
}
++blockIterator;
}
#ifndef QT_NO_IM
if (preeditLength >= 0 && textPos <= block.position() + preeditPosition) {
setPosition(blockPosition);
textPos = block.position() + preeditPosition;
QTextLine line = block.layout()->lineForTextPosition(preeditPosition);
if (!currentLine().isValid()
|| line.lineNumber() != currentLine().lineNumber()) {
setCurrentLine(line);
}
textPos = addText(block, block.charFormat(), textColor, colorChanges,
textPos, textPos + preeditLength,
selectionStart, selectionEnd);
}
#endif
setCurrentLine(QTextLine()); // Reset current line because the text layout changed
m_hasContents = true;
}
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);
}
void DTPatientListDelegate::drawHightlightText(QPainter *painter,
QString text,
QString substring,
QRect pos,
Qt::CaseSensitivity cs,
bool boldFont,
QColor highlight) const
{
if (!painter || (text.length() == 0))
return;
painter->save();
QVector<QTextLayout::FormatRange> selections;
QTextLayout textLayout;
textLayout.setText(text);
if (substring.length() != 0)
{
int idx = -1;
int start = 0;
while (1)
{
idx = text.indexOf(substring, start,cs);
if (idx == -1)
break;
QTextLayout::FormatRange* range = new QTextLayout::FormatRange;
range->start = idx;
range->length = substring.length();
range->format.setBackground(QBrush(QColor(highlight)));
selections.append(*range);
start += substring.length();
}
}
if (boldFont)
{
QFont f = textLayout.font();
f.setBold(true);
textLayout.setFont(f);
}
int leading = painter->fontMetrics().leading();
qreal height = 0;
textLayout.beginLayout();
while (1) {
QTextLine line = textLayout.createLine();
if (!line.isValid())
break;
line.setLineWidth(pos.width());
height += leading;
line.setPosition(QPointF(0, height));
height += line.height();
}
textLayout.endLayout();
textLayout.draw(painter, pos.topLeft(), selections);
painter->restore();
}
