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Try to make an educated guess about the logo extension on the banner

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This commit is contained in:
Juergen Spitzmueller 2018-04-30 12:59:54 +02:00
parent 00e00b32fd
commit dd79338cff
1 changed files with 28 additions and 3 deletions
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31
src/frontends/qt4/GuiView.cpp
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@ -158,7 +158,7 @@ public:
return;
/// The text to be written on top of the pixmap
QString const htext = qt_("The Document\nProcessor[[welcome banner]]");
QString const htextsize = qt_("20[[possibly adjust the welcome banner text size; float value allowed]]");
QString const htextsize = qt_("1.0[[possibly scale the welcome banner text size]]");
/// The text to be written on top of the pixmap
QString const text = lyx_version ?
qt_("version ") + lyx_version : qt_("unknown version");
@ -182,9 +182,10 @@ public:
pain.setPen(QColor(0, 0, 0));
qreal const fsize = fontSize();
bool ok;
qreal hfsize = htextsize.toFloat(&ok);
int hfsize = 20;
qreal locscale = htextsize.toFloat(&ok);
if (!ok)
hfsize = 20;
locscale = 1.0;
QPointF const position = textPosition(false);
QPointF const hposition = textPosition(true);
QRectF const hrect(hposition, splashSize());
@ -203,6 +204,30 @@ public:
font.setStyleHint(QFont::SansSerif);
font.setWeight(QFont::Normal);
font.setPointSizeF(hfsize);
// Check how long the logo gets with the current font
// and adapt if the font is running wider than what
// we assume
QFontMetrics fm(font);
// Split the title into lines to measure the longest line
// in the current l7n.
QStringList titlesegs = htext.split('\n');
int wline = 0;
int hline = fm.height();
QStringList::const_iterator sit;
for (sit = titlesegs.constBegin(); sit != titlesegs.constEnd(); ++sit) {
if (fm.width(*sit) > wline)
wline = fm.width(*sit);
}
// The longest line in the reference font (for English)
// is 180. Calculate scale factor from that.
double const wscale = (180.0 / wline);
// Now do the same for the height (necessary for condensed fonts)
double const hscale = (34.0 / hline);
// take the lower of the two scale factors.
double const scale = min(wscale, hscale);
// Now rescale. Also consider l7n's offset factor.
font.setPointSizeF(hfsize * scale * locscale);
pain.setFont(font);
pain.drawText(hrect, Qt::AlignLeft, htext);
setFocusPolicy(Qt::StrongFocus);