~TextRunWalker()
{
fastFree(m_item.font);
deleteGlyphArrays();
delete[] m_item.log_clusters;
if (m_item.face)
HB_FreeFace(m_item.face);
}
~TextRunWalker()
{
fastFree(m_item.font);
deleteGlyphArrays();
delete[] m_item.log_clusters;
if (m_item.item.bidiLevel)
delete[] m_item.string;
}
void shapeGlyphs()
{
for (;;) {
if (HB_ShapeItem(&m_item))
break;
// We overflowed our arrays. Resize and retry.
// HB_ShapeItem fills in m_item.num_glyphs with the needed size.
deleteGlyphArrays();
// The |+ 1| here is a workaround for a bug in Harfbuzz: the Khmer
// shaper (at least) can fail because of insufficient glyph buffers
// and request 0 additional glyphs: throwing us into an infinite
// loop.
createGlyphArrays(m_item.num_glyphs + 1);
}
}
void ComplexTextController::shapeGlyphs()
{
// HB_ShapeItem() resets m_item.num_glyphs. If the previous call to
// HB_ShapeItem() used less space than was available, the capacity of
// the array may be larger than the current value of m_item.num_glyphs.
// So, we need to reset the num_glyphs to the capacity of the array.
m_item.num_glyphs = m_glyphsArrayCapacity;
resetGlyphArrays();
while (!HB_ShapeItem(&m_item)) {
// We overflowed our arrays. Resize and retry.
// HB_ShapeItem fills in m_item.num_glyphs with the needed size.
deleteGlyphArrays();
// The |+ 1| here is a workaround for a bug in Harfbuzz: the Khmer
// shaper (at least) can fail because of insufficient glyph buffers
// and request 0 additional glyphs: throwing us into an infinite
// loop.
createGlyphArrays(m_item.num_glyphs + 1);
}
}
bool expandGlyphArrays()
{
deleteGlyphArrays();
m_maxGlyphs <<= 1;
return createGlyphArrays();
}
~TextRunWalker()
{
fastFree(m_item.font);
deleteGlyphArrays();
delete[] m_item.log_clusters;
}
