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textbase.cpp
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textbase.cpp
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//=============================================================================
// MuseScore
// Music Composition & Notation
//
// Copyright (C) 2011-2014 Werner Schweer
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2
// as published by the Free Software Foundation and appearing in
// the file LICENCE.GPL
//=============================================================================
#include "text.h"
#include "textedit.h"
#include "jump.h"
#include "marker.h"
#include "score.h"
#include "segment.h"
#include "measure.h"
#include "system.h"
#include "box.h"
#include "page.h"
#include "textframe.h"
#include "sym.h"
#include "xml.h"
#include "undo.h"
#include "mscore.h"
namespace Ms {
#ifdef Q_OS_MAC
#define CONTROL_MODIFIER Qt::AltModifier
#else
#define CONTROL_MODIFIER Qt::ControlModifier
#endif
static const qreal subScriptSize = 0.6;
static const qreal subScriptOffset = 0.5; // of x-height
static const qreal superScriptOffset = -.9; // of x-height
//static const qreal tempotextOffset = 0.4; // of x-height // 80% of 50% = 2 spatiums
//---------------------------------------------------------
// accessibleChar
/// Return the name of common symbols and punctuation, or return the
/// character itself if the name is unknown. For screen readers.
//---------------------------------------------------------
static QString accessibleChar(QChar chr)
{
if (chr == " ") return QObject::tr("space");
if (chr == "-") return QObject::tr("dash");
if (chr == "=") return QObject::tr("equals");
if (chr == ",") return QObject::tr("comma");
if (chr == ".") return QObject::tr("period");
if (chr == ":") return QObject::tr("colon");
if (chr == ";") return QObject::tr("semicolon");
if (chr == "(") return QObject::tr("left parenthesis");
if (chr == ")") return QObject::tr("right parenthesis");
if (chr == "[") return QObject::tr("left bracket");
if (chr == "]") return QObject::tr("right bracket");
return chr;
}
//---------------------------------------------------------
// accessibleCharacter
/// Given a string, if it has one character return its name, otherwise return
/// the string. Useful to force screen readers to speak punctuation when it
/// is alone but not when it forms part of a sentence.
//---------------------------------------------------------
static QString accessibleCharacter(QString str)
{
if (str.length() == 1)
return accessibleChar(str.at(0));
return str;
}
//---------------------------------------------------------
// isSorted
/// return true if (r1,c1) is at or before (r2,c2)
//---------------------------------------------------------
static bool isSorted(int r1, int c1, int r2, int c2)
{
if (r1 < r2)
return true;
if ((r1 == r2) && (c1 <= c2))
return true;
return false;
}
//---------------------------------------------------------
// swap
/// swap (r1,c1) with (r2,c2)
//---------------------------------------------------------
static void swap(int& r1, int& c1, int& r2, int& c2)
{
qSwap(r1, r2);
qSwap(c1, c2);
}
//---------------------------------------------------------
// sort
/// swap (r1,c1) with (r2,c2) if they are not sorted
//---------------------------------------------------------
static void sort(int& r1, int& c1, int& r2, int& c2)
{
if (!isSorted(r1, c1, r2, c2))
swap(r1, c1, r2, c2);
}
//---------------------------------------------------------
// operator==
//---------------------------------------------------------
bool CharFormat::operator==(const CharFormat& cf) const
{
return cf.style() == style()
&& cf.preedit() == preedit()
&& cf.valign() == valign()
&& cf.fontSize() == fontSize()
&& cf.fontFamily() == fontFamily();
}
//---------------------------------------------------------
// clearSelection
//---------------------------------------------------------
void TextCursor::clearSelection()
{
_selectLine = _row;
_selectColumn = _column;
}
//---------------------------------------------------------
// init
//---------------------------------------------------------
void TextCursor::init()
{
_format.setFontFamily(_text->family());
_format.setFontSize(_text->size());
_format.setStyle(_text->fontStyle());
_format.setPreedit(false);
_format.setValign(VerticalAlignment::AlignNormal);
}
//---------------------------------------------------------
// columns
//---------------------------------------------------------
int TextCursor::columns() const
{
return _text->textBlock(_row).columns();
}
//---------------------------------------------------------
// currentCharacter
//---------------------------------------------------------
QChar TextCursor::currentCharacter() const
{
const TextBlock& t = _text->_layout[row()];
QString s = t.text(column(), 1);
if (s.isEmpty())
return QChar();
return s[0];
}
//---------------------------------------------------------
// currentWord
//---------------------------------------------------------
QString TextCursor::currentWord() const
{
const TextBlock& t = _text->_layout[row()];
QString s = t.text(column(), -1);
return s.remove(QRegularExpression(" .*"));
}
//---------------------------------------------------------
// currentLine
//---------------------------------------------------------
QString TextCursor::currentLine() const
{
const TextBlock& t = _text->_layout[row()];
return t.text(0, -1);
}
//---------------------------------------------------------
// updateCursorFormat
//---------------------------------------------------------
void TextCursor::updateCursorFormat()
{
TextBlock* block = &_text->_layout[_row];
int col = hasSelection() ? selectColumn() : column();
const CharFormat* format = block->formatAt(col);
if (!format || format->fontFamily() == "ScoreText")
init();
else
setFormat(*format);
}
//---------------------------------------------------------
// cursorRect
//---------------------------------------------------------
QRectF TextCursor::cursorRect() const
{
const TextBlock& tline = curLine();
const TextFragment* fragment = tline.fragment(column());
QFont _font = fragment ? fragment->font(_text) : _text->font();
qreal ascent = QFontMetricsF(_font, MScore::paintDevice()).ascent();
qreal h = ascent;
qreal x = tline.xpos(column(), _text);
qreal y = tline.y() - ascent * .9;
return QRectF(x, y, 4.0, h);
}
//---------------------------------------------------------
// curLine
// return the current text line in edit mode
//---------------------------------------------------------
TextBlock& TextCursor::curLine() const
{
Q_ASSERT(!_text->_layout.empty());
return _text->_layout[_row];
}
//---------------------------------------------------------
// changeSelectionFormat
//---------------------------------------------------------
void TextCursor::changeSelectionFormat(FormatId id, QVariant val)
{
if (!hasSelection())
return;
int r1 = selectLine();
int r2 = row();
int c1 = selectColumn();
int c2 = column();
sort(r1, c1, r2, c2);
int rows = _text->rows();
for (int row = 0; row < rows; ++row) {
TextBlock& t = _text->_layout[row];
if (row < r1)
continue;
if (row > r2)
break;
if (row == r1 && r1 == r2)
t.changeFormat(id, val, c1, c2 - c1);
else if (row == r1)
t.changeFormat(id, val, c1, t.columns() - c1);
else if (row == r2)
t.changeFormat(id, val, 0, c2);
else
t.changeFormat(id, val, 0, t.columns());
}
_text->layout1();
}
//---------------------------------------------------------
// setFormat
//---------------------------------------------------------
void TextCursor::setFormat(FormatId id, QVariant val)
{
changeSelectionFormat(id, val);
format()->setFormat(id, val);
text()->setTextInvalid();
}
//---------------------------------------------------------
// movePosition
//---------------------------------------------------------
bool TextCursor::movePosition(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode, int count)
{
QString accMsg;
int oldRow = _row;
int oldCol = _column;
QString oldSelection;
if (hasSelection())
oldSelection = selectedText();
for (int i = 0; i < count; i++) {
switch (op) {
case QTextCursor::Left:
if (hasSelection() && mode == QTextCursor::MoveAnchor) {
int r1 = _selectLine;
int r2 = _row;
int c1 = _selectColumn;
int c2 = _column;
sort(r1, c1, r2, c2);
clearSelection();
_row = r1;
_column = c1;
}
else if (_column == 0) {
if (_row == 0)
return false;
--_row;
_column = curLine().columns();
}
else
--_column;
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg += accessibleCurrentCharacter();
#endif
break;
case QTextCursor::Right:
if (hasSelection() && mode == QTextCursor::MoveAnchor) {
int r1 = _selectLine;
int r2 = _row;
int c1 = _selectColumn;
int c2 = _column;
sort(r1, c1, r2, c2);
clearSelection();
_row = r2;
_column = c2;
}
else if (column() >= curLine().columns()) {
if (_row >= _text->rows() - 1)
return false;
++_row;
_column = 0;
}
else
++_column;
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg += accessibleCurrentCharacter();
#endif
break;
case QTextCursor::Up:
if (_row == 0)
return false;
--_row;
if (_column > curLine().columns())
_column = curLine().columns();
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg += accessibleCharacter(currentLine()) + "\n";
#endif
break;
case QTextCursor::Down:
if (_row >= _text->rows() - 1)
return false;
++_row;
if (_column > curLine().columns())
_column = curLine().columns();
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg += accessibleCharacter(currentLine()) + "\n";
#endif
break;
case QTextCursor::Start:
_row = 0;
_column = 0;
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg = accessibleCharacter(currentLine());
#endif
break;
case QTextCursor::End:
_row = _text->rows() - 1;
_column = curLine().columns();
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg = accessibleCharacter(currentLine());
#endif
break;
case QTextCursor::StartOfLine:
_column = 0;
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg = accessibleCurrentCharacter();
#endif
break;
case QTextCursor::EndOfLine:
_column = curLine().columns();
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg = accessibleCurrentCharacter();
#endif
break;
case QTextCursor::WordLeft:
if (_column > 0) {
--_column;
while (_column > 0 && currentCharacter().isSpace())
--_column;
while (_column > 0 && !currentCharacter().isSpace())
--_column;
if (currentCharacter().isSpace())
++_column;
}
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg += accessibleCharacter(currentWord()) + " ";
#endif
break;
case QTextCursor::NextWord: {
int cols = columns();
if (_column < cols) {
++_column;
while (_column < cols && !currentCharacter().isSpace())
++_column;
while (_column < cols && currentCharacter().isSpace())
++_column;
}
}
#if !defined(Q_OS_MAC)
if (mode == QTextCursor::MoveAnchor)
accMsg += accessibleCharacter(currentWord()) + " ";
#endif
break;
default:
qDebug("Text::movePosition: not implemented");
return false;
}
if (mode == QTextCursor::MoveAnchor)
clearSelection();
}
accessibileMessage(accMsg, oldRow, oldCol, oldSelection, mode);
_text->score()->setAccessibleMessage(accMsg);
updateCursorFormat();
_text->score()->addRefresh(_text->canvasBoundingRect());
return true;
}
//---------------------------------------------------------
// doubleClickSelect
//---------------------------------------------------------
void TextCursor::doubleClickSelect()
{
clearSelection();
// if clicked on a space, select surrounding spaces
// otherwise select surround non-spaces
const bool selectSpaces = currentCharacter().isSpace();
//handle double-clicking inside a word
int startPosition = _column;
while (_column > 0 && currentCharacter().isSpace() == selectSpaces)
--_column;
if (currentCharacter().isSpace() != selectSpaces)
++_column;
_selectColumn = _column;
_column = startPosition;
while (_column < curLine().columns() && currentCharacter().isSpace() == selectSpaces)
++_column;
updateCursorFormat();
_text->score()->addRefresh(_text->canvasBoundingRect());
}
//---------------------------------------------------------
// set
//---------------------------------------------------------
bool TextCursor::set(const QPointF& p, QTextCursor::MoveMode mode)
{
QPointF pt = p - _text->canvasPos();
if (!_text->bbox().contains(pt))
return false;
int oldRow = _row;
int oldColumn = _column;
// if (_text->_layout.empty())
// _text->_layout.append(TextBlock());
_row = 0;
for (int row = 0; row < _text->rows(); ++row) {
const TextBlock& l = _text->_layout.at(row);
if (l.y() > pt.y()) {
_row = row;
break;
}
}
_column = curLine().column(pt.x(), _text);
if (oldRow != _row || oldColumn != _column) {
_text->score()->setUpdateAll();
if (mode == QTextCursor::MoveAnchor)
clearSelection();
if (hasSelection())
QApplication::clipboard()->setText(selectedText(), QClipboard::Selection);
}
updateCursorFormat();
return true;
}
//---------------------------------------------------------
// selectedText
// return current selection
//---------------------------------------------------------
QString TextCursor::selectedText() const
{
int r1 = selectLine();
int r2 = _row;
int c1 = selectColumn();
int c2 = column();
sort(r1, c1, r2, c2);
return extractText(r1, c1, r2, c2);
}
//---------------------------------------------------------
// extractText
// return text between (r1,c1) and (r2,c2).
//---------------------------------------------------------
QString TextCursor::extractText(int r1, int c1, int r2, int c2) const
{
Q_ASSERT(isSorted(r1, c1, r2, c2));
const QList<TextBlock>& tb = _text->_layout;
if (r1 == r2)
return tb.at(r1).text(c1, c2 - c1);
QString str = tb.at(r1).text(c1, -1) + "\n";
for (int r = r1 + 1; r < r2; ++r)
str += tb.at(r).text(0, -1) + "\n";
str += tb.at(r2).text(0, c2);
return str;
}
//---------------------------------------------------------
// accessibleCurrentCharacter
/// Return current character or its name in the case of a symbol. For screen readers.
//---------------------------------------------------------
QString TextCursor::accessibleCurrentCharacter() const
{
if (_column < curLine().columns())
return accessibleChar(currentCharacter());
if (_row < _text->rows() - 1)
return QObject::tr("line feed");
return QObject::tr("blank"); // end of text
}
//---------------------------------------------------------
// accessibileMessage
/// Set the accMsg string to describe the result of having moved the cursor
/// from P(oldRow,oldCol) to the current position. For use by screen readers.
///
/// The default message simply contains the characters that the cursor
/// skipped over when moving between the old and current positions. This
/// mimics the behavior of VoiceOver on macOS, but other screen readers do
/// things a bit differently. (Many report the character or word to the right
/// of the cursor regardless of the direction that the cursor moved, but that
/// behavior is not implemented here.) You can override the default message
/// by setting accMsg to a different value before this function is called.
///
/// If the cursor's movement caused a change in selection then the message
/// will say which characters were selected and which were deselected (both
/// can happen in a single move operation). All screen readers do this, so
/// this message cannot be overridden.
//---------------------------------------------------------
void TextCursor::accessibileMessage(QString& accMsg, int oldRow, int oldCol, QString oldSelection, QTextCursor::MoveMode mode) const
{
int r1 = oldRow;
int c1 = oldCol;
int r2 = _row;
int c2 = _column;
const bool movedForwards = isSorted(r1, c1, r2, c2);
// ensure P1 before P2
if (!movedForwards)
swap(r1, c1, r2, c2);
if (mode == QTextCursor::MoveAnchor) {
if (accMsg.isEmpty()) {
// Provide a default message based on skipped characters.
accMsg = accessibleCharacter(extractText(r1, c1, r2, c2));
}
if (!oldSelection.isEmpty()) {
// Cursor's movement has cancelled a previous selection.
oldSelection = QObject::tr("%1 unselected").arg(oldSelection);
if (accMsg.isEmpty()) // no characters were skipped
accMsg = oldSelection;
else
accMsg = QObject::tr("%1, %2").arg(accMsg, oldSelection);
}
return;
}
// Skipped characters were added and/or removed from selection.
const int rs = _selectLine;
const int cs = _selectColumn;
bool selectForwards;
bool anchorOutsideRange;
if (isSorted(rs, cs, r1, c1)) {
// Selection anchor is before range of skipped characters.
anchorOutsideRange = true;
selectForwards = true; // forward movement selects characters
}
else if (isSorted(r2, c2, rs, cs)) {
// Selection anchor is after range of skipped characters.
anchorOutsideRange = true;
selectForwards = false; // forward movement deselects characters
}
else {
// Selection anchor is within the range of skipped characters
// so some characters have been selected and others deselected.
anchorOutsideRange = false;
selectForwards = false;
}
if (anchorOutsideRange) {
// Entire range of skipped characters was selected or deselected.
accMsg = accessibleCharacter(extractText(r1, c1, r2, c2));
if (movedForwards == selectForwards)
accMsg = QObject::tr("%1 selected").arg(accMsg);
else
accMsg = QObject::tr("%1 unselected").arg(accMsg);
return;
}
// cursor skipped over the selection anchor
QString str1 = accessibleCharacter(extractText(r1, c1, rs, cs));
QString str2 = accessibleCharacter(extractText(rs, cs, r2, c2));
if (movedForwards) {
str1 = QObject::tr("%1 unselected").arg(str1);
str2 = QObject::tr("%1 selected").arg(str2);
}
else {
str1 = QObject::tr("%1 selected").arg(str1);
str2 = QObject::tr("%1 unselected").arg(str2);
}
accMsg = QObject::tr("%1, %2").arg(str1, str2);
}
//---------------------------------------------------------
// TextFragment
//---------------------------------------------------------
TextFragment::TextFragment()
{
}
TextFragment::TextFragment(const QString& s)
{
text = s;
}
TextFragment::TextFragment(TextCursor* cursor, const QString& s)
{
format = *cursor->format();
text = s;
}
//---------------------------------------------------------
// split
//---------------------------------------------------------
TextFragment TextFragment::split(int column)
{
int idx = 0;
int col = 0;
TextFragment f;
f.format = format;
for (const QChar& c : qAsConst(text)) {
if (col == column) {
if (idx) {
if (idx < text.size()) {
f.text = text.mid(idx);
text = text.left(idx);
}
}
return f;
}
++idx;
if (c.isHighSurrogate())
continue;
++col;
}
return f;
}
//---------------------------------------------------------
// columns
//---------------------------------------------------------
int TextFragment::columns() const
{
int col = 0;
for (const QChar& c : qAsConst(text)) {
if (c.isHighSurrogate())
continue;
++col;
}
return col;
}
//---------------------------------------------------------
// operator ==
//---------------------------------------------------------
bool TextFragment::operator ==(const TextFragment& f) const
{
return format == f.format && text == f.text;
}
//---------------------------------------------------------
// draw
//---------------------------------------------------------
void TextFragment::draw(QPainter* p, const TextBase* t) const
{
QFont f(font(t));
f.setPointSizeF(f.pointSizeF() * MScore::pixelRatio);
#ifndef Q_OS_MACOS
TextBase::drawTextWorkaround(p, f, pos, text);
#else
p->setFont(f);
p->drawText(pos, text);
#endif
}
//---------------------------------------------------------
// drawTextWorkaround
//---------------------------------------------------------
void TextBase::drawTextWorkaround(QPainter* p, QFont& f, const QPointF pos, const QString text)
{
qreal mm = p->worldTransform().m11();
if (!(MScore::pdfPrinting) && (mm < 1.0) && f.bold() && !(f.underline())) {
// workaround for https://musescore.org/en/node/284218
// and https://musescore.org/en/node/281601
// only needed for certain artificially emboldened fonts
// see https://musescore.org/en/node/281601#comment-900261
// in Qt 5.12.x this workaround should be no more necessary if
// env variable QT_MAX_CACHED_GLYPH_SIZE is set to 1.
// The workaround works badly if the text is at the same time
// bold and underlined.
p->save();
qreal dx = p->worldTransform().dx();
qreal dy = p->worldTransform().dy();
// diagonal elements will now be changed to 1.0
p->setTransform(QTransform(1.0, 0.0, 0.0, 1.0, dx, dy));
// correction factor for bold text drawing, due to the change of the diagonal elements
qreal factor = 1.0 / mm;
QFont fnew(f, p->device());
fnew.setPointSizeF(f.pointSizeF() / factor);
QRawFont fRaw = QRawFont::fromFont(fnew);
QTextLayout textLayout(text, f, p->device());
textLayout.beginLayout();
while (true) {
QTextLine line = textLayout.createLine();
if (!line.isValid())
break;
}
textLayout.endLayout();
// glyphruns with correct positions, but potentially wrong glyphs
// (see bug https://musescore.org/en/node/117191 regarding positions and DPI)
QList<QGlyphRun> glyphruns = textLayout.glyphRuns();
qreal offset = 0;
// glyphrun drawing has an offset equal to the max ascent of the text fragment
for (int i = 0; i < glyphruns.length(); i++) {
qreal value = glyphruns.at(i).rawFont().ascent() / factor;
if (value > offset)
offset = value;
}
for (int i = 0; i < glyphruns.length(); i++) {
QVector<QPointF> positions1 = glyphruns.at(i).positions();
QVector<QPointF> positions2;
// calculate the new positions for the scaled geometry
for (int j = 0; j < positions1.length(); j++) {
QPointF newPoint = positions1.at(j) / factor;
positions2.append(newPoint);
}
QGlyphRun glyphrun2 = glyphruns.at(i);
glyphrun2.setPositions(positions2);
// change the glyphs with the correct glyphs
// and account for glyph substitution
if (glyphrun2.rawFont().familyName() != fnew.family()) {
QFont f2(fnew);
f2.setFamily(glyphrun2.rawFont().familyName());
glyphrun2.setRawFont(QRawFont::fromFont(f2));
}
else
glyphrun2.setRawFont(fRaw);
p->drawGlyphRun(QPointF(pos.x() / factor, pos.y() / factor - offset),glyphrun2);
positions2.clear();
}
// Restore the QPainter to its former state
p->setTransform(QTransform(mm, 0.0, 0.0, mm, dx, dy));
p->restore();
}
else {
p->setFont(f);
p->drawText(pos, text);
}
}
//---------------------------------------------------------
// font
//---------------------------------------------------------
QFont TextFragment::font(const TextBase* t) const
{
QFont font;
qreal m = format.fontSize();
if (t->sizeIsSpatiumDependent())
m *= t->spatium() / SPATIUM20;
if (format.valign() != VerticalAlignment::AlignNormal)
m *= subScriptSize;
font.setUnderline(format.underline() || format.preedit());
QString family;
if (format.fontFamily() == "ScoreText") {
family = t->score()->styleSt(Sid::MusicalTextFont);
// check if all symbols are available
font.setFamily(family);
QFontMetricsF fm(font);
bool fail = false;
for (int i = 0; i < text.size(); ++i) {
QChar c = text[i];
if (c.isHighSurrogate()) {
if (i+1 == text.size())
qFatal("bad string");
QChar c2 = text[i+1];
++i;
uint v = QChar::surrogateToUcs4(c, c2);
if (!fm.inFontUcs4(v)) {
fail = true;
break;
}
}
else {
if (!fm.inFont(c)) {
fail = true;
break;
}
}
}
if (fail)
family = ScoreFont::fallbackTextFont();
}
else
family = format.fontFamily();
font.setFamily(family);
font.setBold(format.bold());
font.setItalic(format.italic());
Q_ASSERT(m > 0.0);
font.setPointSizeF(m * t->mag());
return font;
}
//---------------------------------------------------------
// draw
//---------------------------------------------------------
void TextBlock::draw(QPainter* p, const TextBase* t) const
{
p->translate(0.0, _y);
for (const TextFragment& f : _fragments)
f.draw(p, t);
p->translate(0.0, -_y);
}
//---------------------------------------------------------
// layout
//---------------------------------------------------------
void TextBlock::layout(TextBase* t)
{
_bbox = QRectF();
qreal x = 0.0;
_lineSpacing = 0.0;
qreal lm = 0.0;
qreal layoutWidth = 0;
Element* e = t->parent();
if (e && t->layoutToParentWidth()) {
layoutWidth = e->width();
switch(e->type()) {
case ElementType::HBOX:
case ElementType::VBOX:
case ElementType::TBOX: {
Box* b = toBox(e);
layoutWidth -= ((b->leftMargin() + b->rightMargin()) * DPMM);
lm = b->leftMargin() * DPMM;
}
break;
case ElementType::PAGE: {
Page* p = toPage(e);
layoutWidth -= (p->lm() + p->rm());
lm = p->lm();
}
break;
case ElementType::MEASURE: {
Measure* m = toMeasure(e);
layoutWidth = m->bbox().width();
}
break;
default:
break;
}
}
if (_fragments.empty()) {
QFontMetricsF fm = t->fontMetrics();
_bbox.setRect(0.0, -fm.ascent(), 1.0, fm.descent());
_lineSpacing = fm.lineSpacing();
}
else if (_fragments.size() == 1 && _fragments.at(0).text.isEmpty()) {
auto fi = _fragments.begin();
TextFragment& f = *fi;
f.pos.setX(x);
QFontMetricsF fm(f.font(t), MScore::paintDevice());
if (f.format.valign() != VerticalAlignment::AlignNormal) {
qreal voffset = fm.xHeight() / subScriptSize; // use original height
if (f.format.valign() == VerticalAlignment::AlignSubScript)
voffset *= subScriptOffset;
else
voffset *= superScriptOffset;
f.pos.setY(voffset);
}
else {
f.pos.setY(0.0);
}
QRectF temp(0.0, -fm.ascent(), 1.0, fm.descent());
_bbox |= temp;
_lineSpacing = qMax(_lineSpacing, fm.lineSpacing());
}
else {
const auto fiLast = --_fragments.end();
for (auto fi = _fragments.begin(); fi != _fragments.end(); ++fi) {
TextFragment& f = *fi;
f.pos.setX(x);
QFontMetricsF fm(f.font(t), MScore::paintDevice());
if (f.format.valign() != VerticalAlignment::AlignNormal) {
qreal voffset = fm.xHeight() / subScriptSize; // use original height
if (f.format.valign() == VerticalAlignment::AlignSubScript)
voffset *= subScriptOffset;
else
voffset *= superScriptOffset;
f.pos.setY(voffset);
}
else {
f.pos.setY(0.0);
}
// Optimization: don't calculate character position
// for the next fragment if there is no next fragment
if (fi != fiLast) {
const qreal w = fm.width(f.text);
x += w;
}
_bbox |= fm.tightBoundingRect(f.text).translated(f.pos);