/**
Use HarfBuzz to shape segment in question
*/
void shapeGlyphs(StoryText *itemText, int startIndex, int endIndex)
{
if(startIndex < 0 || endIndex < 1) { return; }
QString text = itemText->text(startIndex, endIndex-startIndex); //this one takes pos, len
ScText * scitem = itemText->item(startIndex);
ScFace scface = scitem->font();
qreal size = scitem->fontSize();
ShaperFontInfo font(scface, size / 10.0);
ShaperItemInfo shaper(&font);
ShaperOutput out = shaper.shapeItem(text); //HarfBuzz Magic
//out.glyphs has our glyphs
for(uint i = 0; i < out.num_glyphs; i++)
{
GlyphLayout &glyph = itemText->item(startIndex + i)->glyph;
glyph.glyph = out.glyphs[i];
// XXX: I can't figure out how to use the advances returned by harfbuzz
// to position the glyphs, so I'm going to ask the scribus font
// class to get the advances for me, then I'll handle marks as
// a special case where there's no advance
//
// Please somebody FIXME
//
glyph.xadvance = scface.glyphWidth(glyph.glyph, size); //works .. sorta!!
if(out.attributes[i].mark) //HACK vowel marks
{
glyph.xadvance = 0;
}
//debugging
// qDebug() << "glyphs[" << i << "] =" << out.glyphs[i];
// qDebug() << "advance[" << i << "] =" << out.advances[i];
}
if(out.num_glyphs < (uint)text.length())
{
// There were some ligatures, so zero-out the extra characters at the end of this run
for(int i = out.num_glyphs; i < text.length(); i++)
{
GlyphLayout &glyph = itemText->item(startIndex + i)->glyph;
glyph.glyph = scface.char2CMap(QChar::Nbsp);
glyph.xadvance = 0;
}
}
}
QVariant CharTableModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || m_doc == 0)
return QVariant();
int ix = index.row() * m_cols + index.column();
uint currentChar;
QString currentFont = m_fontInUse;
if (ix < m_characters.count())
{
currentChar = m_characters[ix];
currentFont = m_fonts[ix];
}
else
return QVariant();
// for mimeData()
if (role == CharTableModel::CharTextRole)
return QString("%1").arg(QChar(currentChar));
if (role == CharTableModel::CharTextAndFontRole)
return QString("%1#%2").arg(currentChar).arg(currentFont);
// tooltip
if (role == Qt::ToolTipRole)
return QString("Unicode:\n0x%1").arg(currentChar, 4, 16, QChar('0'));
// status tip
if ( role == Qt::StatusTipRole )
{
QString tmp = QString("%1").arg(currentChar, 4, 16, QChar('0')).toUpper();
QStringList lst;
lst << tmp << currentFont;
return lst;
}
// pixmap
if (role == Qt::DecorationRole)
{
// m_cols should not become 0. Never.
int baseSize = m_viewWidth / m_cols;
QTransform chma;
chma.scale(baseSize/10, baseSize/10);
ScFace face = (*m_doc->AllFonts)[currentFont];
uint gl = face.char2CMap(currentChar);
int size = baseSize + qRound(-face.descent() * baseSize) + 1;
double ww = baseSize - face.glyphWidth(gl, baseSize);
QImage pix(baseSize, size, QImage::Format_ARGB32_Premultiplied);
ScPainter *p = new ScPainter(&pix, baseSize, size);
p->clear();
FPointArray gly = face.glyphOutline(gl, 1);
if (gly.size() > 4)
{
gly.map(chma);
p->translate(ww / 2, 1);
p->setBrush(Qt::black);
p->setFillMode(1);
p->setupPolygon(&gly);
p->fillPath();
p->end();
}
delete p;
return QVariant(QPixmap::fromImage(pix));
}
// trash
return QVariant();
}
