void QFontEngineDirectWrite::addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs,
QPainterPath *path, QTextItem::RenderFlags flags)
{
if (m_directWriteFontFace == 0)
return;
QVarLengthArray<UINT16> glyphIndices(nglyphs);
QVarLengthArray<DWRITE_GLYPH_OFFSET> glyphOffsets(nglyphs);
QVarLengthArray<FLOAT> glyphAdvances(nglyphs);
for (int i=0; i<nglyphs; ++i) {
glyphIndices[i] = glyphs[i];
glyphOffsets[i].advanceOffset = positions[i].x.toReal();
glyphOffsets[i].ascenderOffset = -positions[i].y.toReal();
glyphAdvances[i] = 0.0;
}
GeometrySink geometrySink(path);
HRESULT hr = m_directWriteFontFace->GetGlyphRunOutline(
fontDef.pixelSize,
glyphIndices.data(),
glyphAdvances.data(),
glyphOffsets.data(),
nglyphs,
false,
flags & QTextItem::RightToLeft,
&geometrySink
);
if (FAILED(hr))
qErrnoWarning("QFontEngineDirectWrite::addGlyphsToPath: GetGlyphRunOutline failed");
}
void QFontEngineDirectWrite::recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags) const
{
if (m_directWriteFontFace == 0)
return;
QVarLengthArray<UINT16> glyphIndices(glyphs->numGlyphs);
// ### Caching?
for(int i=0; i<glyphs->numGlyphs; i++)
glyphIndices[i] = UINT16(glyphs->glyphs[i]);
QVarLengthArray<DWRITE_GLYPH_METRICS> glyphMetrics(glyphIndices.size());
HRESULT hr = m_directWriteFontFace->GetDesignGlyphMetrics(glyphIndices.data(),
glyphIndices.size(),
glyphMetrics.data());
if (SUCCEEDED(hr)) {
for (int i=0; i<glyphs->numGlyphs; ++i) {
glyphs->advances_x[i] = DESIGN_TO_LOGICAL(glyphMetrics[i].advanceWidth);
if (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
glyphs->advances_x[i] = glyphs->advances_x[i].round();
glyphs->advances_y[i] = 0;
}
} else {
qErrnoWarning("QFontEngineDirectWrite::recalcAdvances: GetDesignGlyphMetrics failed");
}
}
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 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::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;
}
