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FIX JKQTMathText rendering problem with a combination of numbers and text/symbols (wrong advance was used)

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jkriege2 2024-01-08 20:29:02 +01:00
parent 09e07cb12a
commit d030cf5f3f
1 changed files with 19 additions and 2 deletions
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21
lib/jkqtmathtext/nodes/jkqtmathtexttextnode.cpp
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@ -150,35 +150,42 @@ JKQTMathTextTextNode::LayoutInfo JKQTMathTextTextNode::calcLayout(QPainter &pain
l.baselineXCorrection=0;
l.topXCorrection=0;
QRectF br, tbr;
double hadv=0;
switch(l.fontMode[i]) {
case FMasDefined:
case FMasDefinedOutline:
br=JKQTMathTextGetBoundingRect(f, l.textpart[i], painter.device());
tbr=JKQTMathTextGetTightBoundingRect(f, l.textpart[i], painter.device());
hadv=JKQTMathTextGetHorAdvance(f, l.textpart[i], painter.device());
if (f.italic() && l.textpart[i].size()>0) l.baselineXCorrection=JKQTMathTextGetRightBearing(f,l.textpart[i].operator[](l.textpart[i].size()-1),painter.device());
break;
case FMasDefinedForceUpright:
br=JKQTMathTextGetBoundingRect(fUpright, l.textpart[i], painter.device());
tbr=JKQTMathTextGetTightBoundingRect(fUpright, l.textpart[i], painter.device());
hadv=JKQTMathTextGetHorAdvance(fUpright, l.textpart[i], painter.device());
break;
case FMroman:
br=JKQTMathTextGetBoundingRect(fRoman, l.textpart[i], painter.device());
tbr=JKQTMathTextGetTightBoundingRect(fRoman, l.textpart[i], painter.device());
if (fRoman.italic() && l.textpart[i].size()>0) l.baselineXCorrection=JKQTMathTextGetRightBearing(fRoman,l.textpart[i].operator[](l.textpart[i].size()-1),painter.device());
hadv=JKQTMathTextGetHorAdvance(fRoman, l.textpart[i], painter.device());
break;
case FMfallbackSymbol:
br=JKQTMathTextGetBoundingRect(fFallbackSym, l.textpart[i], painter.device());
tbr=JKQTMathTextGetTightBoundingRect(fFallbackSym, l.textpart[i], painter.device());
if (fFallbackSym.italic() && l.textpart[i].size()>0) l.baselineXCorrection=JKQTMathTextGetRightBearing(fFallbackSym,l.textpart[i].operator[](l.textpart[i].size()-1),painter.device());
hadv=JKQTMathTextGetHorAdvance(fFallbackSym, l.textpart[i], painter.device());
break;
}
l.textpartXPos.append(l.width);
l.width+=hadv;
/*
if (i==l.textpart.size()-1) l.width+=tbr.width();
else l.width+=br.width();
if (l.textpart[i].size()>0 && l.textpart[i].at(l.textpart[i].size()-1).isSpace()) {
// this correction is necessary, because it seems that QFontMetricsF::boundingRect() ignores trailing spaces
l.width+=sp;
}
}*/
const double thisAscent=-tbr.top();
const double thisDescent=tbr.bottom();
ascent=qMax(ascent, thisAscent);
@ -324,6 +331,15 @@ double JKQTMathTextTextNode::draw(QPainter& painter, double x, double y, JKQTMat
painter.drawText(QPointF(x+l.textpartXPos[i], y), l.textpart[i]);
break;
}
if (drawBoxes) {
painter.save(); auto __finalpaint=JKQTPFinally([&painter]() {painter.restore();});
QPen p=QPen(Qt::SolidLine);
p.setColor("red");
p.setWidthF(0.5);
painter.setPen(p);
const QLineF vline(x+l.textpartXPos[i], y-l.baselineHeight, x+l.textpartXPos[i], y-l.baselineHeight+l.overallHeight );
painter.drawLine(vline);
}
}
return x+l.width;
@ -351,6 +367,7 @@ QString JKQTMathTextTextNode::textTransform(const QString &text, const JKQTMathT
QString txt=text;
auto fnt=parentMathText->getFontData(currentEv.font, currentEv.insideMath);
const QFontMetricsF fm(currentEv.getFont(parentMathText));
const bool ch2212InFont=fm.inFont(QChar(0x2212));
if (fnt.second==MTFELatin1 || fnt.second==MTFEUnicode) {
if (currentEv.insideMath) {
txt="";
@ -358,7 +375,7 @@ QString JKQTMathTextTextNode::textTransform(const QString &text, const JKQTMathT
QChar c=text[i];
switch(c.unicode()) {
case '-':
if (fm.inFont(QChar(0x2212))) {
if (ch2212InFont) {
txt+=QString(QString(" ")+QChar(0x2212));
} else {
txt+=QString(QString(" -"));