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#12769 correct line width based painting of wavy underline

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With very tiny fonts the line width is 0 and the loop to construct the wavy line never ends.
This commit is contained in:
Stephan Witt 2023-05-15 07:06:44 +02:00
parent 4ffc8fdc60
commit ac286e54b7
1 changed files with 6 additions and 5 deletions
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11
src/frontends/qt/GuiPainter.cpp
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@ -546,11 +546,12 @@ void GuiPainter::wavyHorizontalLine(FontInfo const & f, int x, int y, int width,
{
FontMetrics const & fm = theFontMetrics(f);
int const pos = fm.underlinePos();
int const lw = max(1, fm.lineWidth());
setQPainterPen(computeColor(col), line_solid, fm.lineWidth());
int const step = 2 * fm.lineWidth();
setQPainterPen(computeColor(col), line_solid, lw);
int const step = 2 * lw;
int const xend = x + width;
int height = 1 * fm.lineWidth();
int height = lw;
//FIXME: I am not sure if Antialiasing gives the best effect.
//setRenderHint(Antialiasing, true);
QVector<QPoint> points;
@ -560,8 +561,8 @@ void GuiPainter::wavyHorizontalLine(FontInfo const & f, int x, int y, int width,
points.append(QPoint(x + step, y + pos + height));
x += step;
points.append(QPoint(x, (qreal)y + pos + height));
points.append(QPoint(x + step/2, y + pos + height));
x += step/2;
points.append(QPoint(x + lw, y + pos + height));
x += lw;
}
drawPolyline(points);
//setRenderHint(Antialiasing, false);