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IMPROVED JKQTMathText rendering of \sfrac and \stfrac

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jkriege2 2024-01-08 21:00:30 +01:00
parent 9337976e30
commit 25ff0a1b5b
1 changed files with 12 additions and 10 deletions
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22
lib/jkqtmathtext/nodes/jkqtmathtextfracnode.cpp
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@ -153,10 +153,10 @@ JKQTMathTextNodeSize JKQTMathTextFracNode::getSizeInternal(QPainter& painter, JK
}
const QFont fev1=ev1.getFont(parentMathText);
const QRectF AeTBR1=JKQTMathTextGetBoundingRect(fev1, "A", painter.device());
const QRectF AeTBR1=JKQTMathTextGetTightBoundingRect(fev1, "A", painter.device());
const double asc1=AeTBR1.height();
const QFont fev2=ev2.getFont(parentMathText);
const QRectF AeTBR2=JKQTMathTextGetBoundingRect(fev2, "A", painter.device());
const QRectF AeTBR2=JKQTMathTextGetTightBoundingRect(fev2, "A", painter.device());
const double asc2=AeTBR2.height();
JKQTMathTextNodeSize size1=child1->getSize(painter, ev1);
@ -193,6 +193,8 @@ JKQTMathTextNodeSize JKQTMathTextFracNode::getSizeInternal(QPainter& painter, JK
const double top_ascent=line_ascent;
const double newascent=size1.overallHeight+top_ascent;
const double newdescent=qMax(size2.overallHeight-size2.baselineHeight, qheight-xheight);
const double deltaWidth=xwidth*((fracmode==JKQTMathTextFracNode::MTFMstfrac)?0.8:0.7);
size.width=size1.width+size2.width+xwidth*0.666;
size.strikeoutPos=line_ascent;
@ -280,10 +282,10 @@ double JKQTMathTextFracNode::draw(QPainter& painter, double x, double y, JKQTMat
const QFont fev1=ev1.getFont(parentMathText);
const QRectF AeTBR1=JKQTMathTextGetBoundingRect(fev1, "A", painter.device());
const QRectF AeTBR1=JKQTMathTextGetTightBoundingRect(fev1, "A", painter.device());
const double asc1=AeTBR1.height();
const QFont fev2=ev2.getFont(parentMathText);
const QRectF AeTBR2=JKQTMathTextGetBoundingRect(fev2, "A", painter.device());
const QRectF AeTBR2=JKQTMathTextGetTightBoundingRect(fev2, "A", painter.device());
const double asc2=AeTBR2.height();
@ -322,16 +324,17 @@ double JKQTMathTextFracNode::draw(QPainter& painter, double x, double y, JKQTMat
deltaWidth=xwidth/2.0;
const QLineF l(x+p.widthF()*2.0, yline, x+maxWidth+deltaWidth-p.widthF()*2.0, yline);
if (l.length()>0) painter.drawLine(l);
child1->draw(painter, x+deltaWidth/2.0+(maxWidth-size1.width)/2.0, yline-xheight*(parentMathText->getFracShiftFactor())-descent1, ev1);
child2->draw(painter, x+deltaWidth/2.0+(maxWidth-size2.width)/2.0, yline+xheight*(parentMathText->getFracShiftFactor())+ascent2, ev2);
child1->draw(painter, x+deltaWidth/2.0+(maxWidth-size1.width)/2.0, yline-xheight*parentMathText->getFracShiftFactor()-descent1, ev1);
child2->draw(painter, x+deltaWidth/2.0+(maxWidth-size2.width)/2.0, yline+xheight*parentMathText->getFracShiftFactor()+ascent2, ev2);
} else if (fracmode==JKQTMathTextFracNode::MTFMstackrel) {
child1->draw(painter, x+(maxWidth-size1.width)/2.0, yline-xheight*(parentMathText->getFracShiftFactor())-descent1, ev1);
child2->draw(painter, x+(maxWidth-size2.width)/2.0, yline+xheight*(parentMathText->getFracShiftFactor())+ascent2, ev2);
} else if (fracmode==JKQTMathTextFracNode::MTFMstfrac || fracmode==JKQTMathTextFracNode::MTFMsfrac) {
deltaWidth=xwidth*0.666;
deltaWidth=xwidth*((fracmode==JKQTMathTextFracNode::MTFMstfrac)?0.8:0.7);
const double translate_factor=(fracmode==JKQTMathTextFracNode::MTFMsfrac)?(-0.2):0.0;
child1->draw(painter, x, yline, ev1);
child2->draw(painter, x+size1.width+deltaWidth, y, ev2);
const QLineF l(x+size1.width+deltaWidth, y-Mheight, x+size1.width, y+(qheight-xheight));
const QLineF l = QLineF(x+size1.width+deltaWidth, y-Mheight, x+size1.width, y+(qheight-xheight)).translated(translate_factor*deltaWidth,0);
if (l.length()>0) painter.drawLine(l);
} else if (fracmode==JKQTMathTextFracNode::MTFMunderset) {
child1->draw(painter, x+xwidth/2.0+(maxWidth-size1.width)/2.0, y, ev1);
@ -409,8 +412,7 @@ double JKQTMathTextFracNode::draw(QPainter& painter, double x, double y, JKQTMat
if (fracmode==JKQTMathTextFracNode::MTFMstfrac || fracmode==JKQTMathTextFracNode::MTFMsfrac) return x+size1.width+size2.width+deltaWidth;
else return x+maxWidth+deltaWidth;
else return x+maxWidth+deltaWidth
}
bool JKQTMathTextFracNode::toHtml(QString &/*html*/, JKQTMathTextEnvironment /*currentEv*/, JKQTMathTextEnvironment /*defaultEv*/) const {