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Better way to find maximally suitable font size.

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--HG--
branch : feature
This commit is contained in:
Roman Telezhynskyi 2016-12-15 08:50:25 +02:00
parent 97d76957e3
commit 227e4f0ba0
1 changed files with 16 additions and 2 deletions
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18
src/libs/vlayout/vtextmanager.cpp
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@ -189,6 +189,7 @@ void VTextManager::FitFontSize(qreal fW, qreal fH)
// get ratio between char width and height
int iMaxLen = 0;
TextLine maxLine;
QFont fnt;
for (int i = 0; i < GetSourceLinesCount(); ++i)
{
@ -198,15 +199,28 @@ void VTextManager::FitFontSize(qreal fW, qreal fH)
fnt.setWeight(tl.m_eFontWeight);
fnt.setStyle(tl.m_eStyle);
QFontMetrics fm(fnt);
const int iTW = fm.width(GetSourceLine(i).m_qsText);
const int iTW = fm.width(tl.m_qsText);
if (iTW > iMaxLen)
{
iMaxLen = iTW;
maxLine = tl;
}
}
if (iMaxLen > fW)
{
iFS = qFloor(iFS*fW/iMaxLen);
QFont fnt = m_font;
fnt.setWeight(maxLine.m_eFontWeight);
fnt.setStyle(maxLine.m_eStyle);
int lineLength = 0;
do
{
--iFS;
fnt.setPixelSize(iFS + maxLine.m_iFontSize);
QFontMetrics fm(fnt);
lineLength = fm.width(maxLine.m_qsText);
}
while (lineLength > fW && iFS > MIN_FONT_SIZE);
}
SetFontSize(iFS);
qDebug() << "Font size" << GetSourceLinesCount() << iFS;