QSize QwtText::textSize(const QFont &font) const
{
#if QT_VERSION < 0x040000
const QFont fnt(usedFont(font));
#else
// We want to calculate in screen metrics. So
// we need a font that uses screen metrics
const QFont fnt(usedFont(font), QApplication::desktop());
#endif
if ( !d_layoutCache->textSize.isValid()
|| d_layoutCache->font != fnt )
{
d_layoutCache->textSize = d_data->textEngine->textSize(
fnt, d_data->flags, d_data->text);
d_layoutCache->font = fnt;
}
QSize sz = d_layoutCache->textSize;
if ( d_data->layoutAttributes & MinimumLayout )
{
int left, right, top, bottom;
d_data->textEngine->textMargins(fnt, d_data->text,
left, right, top, bottom);
sz -= QSize(left + right, top + bottom);
}
const QwtMetricsMap map = QwtPainter::metricsMap();
sz = map.screenToLayout(sz);
return sz;
}
/*!
Returns the size, that is needed to render text
\param defaultFont Font of the text
\return Caluclated size
*/
QSize QwtText::textSize(const QFont &defaultFont) const
{
#if QT_VERSION < 0x040000
const QFont font(usedFont(defaultFont));
#else
// We want to calculate in screen metrics. So
// we need a font that uses screen metrics
const QFont font(usedFont(defaultFont), QApplication::desktop());
#endif
if ( !d_layoutCache->textSize.isValid()
|| d_layoutCache->font != font )
{
d_layoutCache->textSize = d_data->textEngine->textSize(
font, d_data->renderFlags, d_data->text);
d_layoutCache->font = font;
}
QSize sz = d_layoutCache->textSize;
const QwtMetricsMap map = QwtPainter::metricsMap();
if ( d_data->layoutAttributes & MinimumLayout )
{
int left, right, top, bottom;
d_data->textEngine->textMargins(font, d_data->text,
left, right, top, bottom);
sz -= QSize(left + right, top + bottom);
#if QT_VERSION >= 0x040000
if ( !map.isIdentity() )
{
#ifdef __GNUC__
#warning Too small text size, when printing in high resolution
#endif
/*
When printing in high resolution, the tick labels
of are cut of. We need to find out why, but for
the moment we add a couple of pixels instead.
*/
sz += QSize(3, 2);
}
#endif
}
sz = map.screenToLayout(sz);
return sz;
}
