bool QWindowsFontEngineDirectWrite::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs,
int *nglyphs, QFontEngine::ShaperFlags flags) const
{
Q_ASSERT(glyphs->numGlyphs >= *nglyphs);
if (*nglyphs < len) {
*nglyphs = len;
return false;
}
QVarLengthArray<UINT32> codePoints(len);
int actualLength = 0;
QStringIterator it(str, str + len);
while (it.hasNext())
codePoints[actualLength++] = it.next();
QVarLengthArray<UINT16> glyphIndices(actualLength);
HRESULT hr = m_directWriteFontFace->GetGlyphIndicesW(codePoints.data(), actualLength,
glyphIndices.data());
if (FAILED(hr)) {
qErrnoWarning("%s: GetGlyphIndicesW failed", __FUNCTION__);
return false;
}
for (int i = 0; i < actualLength; ++i)
glyphs->glyphs[i] = glyphIndices.at(i);
*nglyphs = actualLength;
glyphs->numGlyphs = actualLength;
if (!(flags & GlyphIndicesOnly))
recalcAdvances(glyphs, 0);
return true;
}
bool QFontEngineDirectWrite::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs,
int *nglyphs, QTextEngine::ShaperFlags flags) const
{
if (m_directWriteFontFace != 0) {
QVarLengthArray<UINT32> codePoints(len);
for (int i=0; i<len; ++i) {
codePoints[i] = getChar(str, i, len);
if (flags & QTextEngine::RightToLeft)
codePoints[i] = QChar::mirroredChar(codePoints[i]);
}
QVarLengthArray<UINT16> glyphIndices(len);
HRESULT hr = m_directWriteFontFace->GetGlyphIndicesW(codePoints.data(),
len,
glyphIndices.data());
if (SUCCEEDED(hr)) {
for (int i=0; i<len; ++i)
glyphs->glyphs[i] = glyphIndices[i];
*nglyphs = len;
if (!(flags & QTextEngine::GlyphIndicesOnly))
recalcAdvances(glyphs, 0);
return true;
} else {
qErrnoWarning("QFontEngineDirectWrite::stringToCMap: GetGlyphIndicesW failed");
}
}
return false;
}
bool QFontEngineDirectWrite::canRender(const QChar *string, int len)
{
QVarLengthArray<UINT32> codePoints(len);
int actualLength = 0;
for (int i=0; i<len; ++i, actualLength++)
codePoints[actualLength] = getChar(string, i, len);
QVarLengthArray<UINT16> glyphIndices(actualLength);
HRESULT hr = m_directWriteFontFace->GetGlyphIndices(codePoints.data(), actualLength,
glyphIndices.data());
if (FAILED(hr)) {
qErrnoWarning(hr, "QFontEngineDirectWrite::canRender: GetGlyphIndices failed");
return false;
} else {
for (int i=0; i<glyphIndices.size(); ++i) {
if (glyphIndices.at(i) == 0)
return false;
}
return true;
}
}
bool QWindowsFontEngineDirectWrite::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs,
int *nglyphs, QFontEngine::ShaperFlags flags) const
{
if (*nglyphs < len) {
*nglyphs = len;
return false;
}
QVarLengthArray<UINT32> codePoints(len);
int actualLength = 0;
if (flags & QFontEngine::RightToLeft) {
for (int i = 0; i < len; ++i)
codePoints[actualLength++] = QChar::mirroredChar(getChar(str, i, len));
} else {
for (int i = 0; i < len; ++i)
codePoints[actualLength++] = getChar(str, i, len);
}
QVarLengthArray<UINT16> glyphIndices(actualLength);
HRESULT hr = m_directWriteFontFace->GetGlyphIndicesW(codePoints.data(), actualLength,
glyphIndices.data());
if (FAILED(hr)) {
qErrnoWarning("%s: GetGlyphIndicesW failed", __FUNCTION__);
return false;
}
for (int i = 0; i < actualLength; ++i)
glyphs->glyphs[i] = glyphIndices.at(i);
*nglyphs = actualLength;
glyphs->numGlyphs = actualLength;
if (!(flags & GlyphIndicesOnly))
recalcAdvances(glyphs, 0);
return true;
}
