void directwriteAnalyzerTest(IDWriteFontFace *fontFace, WCHAR *string, int len, featurePreparer *features)
{
IDWriteTextAnalyzer *analyzer;
analysisSourceSink *ss;
const DWRITE_TYPOGRAPHIC_FEATURES **dwfeatures;
UINT32 *dwfeatureRangeLengths;
UINT32 dwfeatureRanges;
std::vector<UINT16> glyphs;
HRESULT hr;
hr = dwfactory->CreateTextAnalyzer(&analyzer);
if (hr != S_OK)
die("error creating IDWriteTextAnalyzer", hr);
ss = new analysisSourceSink(string, len);
dwfeatures = NULL;
dwfeatureRangeLengths = NULL;
dwfeatureRanges = 0;
if (features != NULL) {
// TODO WTF IS THIS C++? or is this the DirectWrite devs failing?
dwfeatures = (const DWRITE_TYPOGRAPHIC_FEATURES **) (features->dwFeatures);
dwfeatureRangeLengths = features->dwFeatureRangeLengths;
dwfeatureRanges = features->dwFeatureRanges;
}
hr = analyzer->AnalyzeScript(ss, 0, len, ss);
if (hr != S_OK)
die("error analyzing scripts for DirectWrite", hr);
ss->processResults([&](DWRITE_SCRIPT_ANALYSIS scriptAnalysis, UINT32 start, UINT32 end) {
UINT16 *clusterMap;
DWRITE_SHAPING_TEXT_PROPERTIES *textProps;
UINT16 *glyphIndices;
DWRITE_SHAPING_GLYPH_PROPERTIES *glyphProps;
UINT32 nGlyphs, nActualGlyphs;
UINT32 i;
clusterMap = new UINT16[end - start];
textProps = new DWRITE_SHAPING_TEXT_PROPERTIES[end - start];
nGlyphs = (3 * (end - start) / 2 + 16);
for (;;) {
glyphIndices = new UINT16[nGlyphs];
glyphProps = new DWRITE_SHAPING_GLYPH_PROPERTIES[nGlyphs];
ZeroMemory(clusterMap, (end - start) * sizeof (UINT16));
ZeroMemory(textProps, (end - start) * sizeof (DWRITE_SHAPING_TEXT_PROPERTIES));
ZeroMemory(glyphIndices, nGlyphs * sizeof (UINT16));
ZeroMemory(glyphProps, nGlyphs * sizeof (DWRITE_SHAPING_GLYPH_PROPERTIES));
hr = analyzer->GetGlyphs(string + start, end - start,
fontFace, FALSE, FALSE,
&scriptAnalysis, NULL, NULL,
dwfeatures, dwfeatureRangeLengths, dwfeatureRanges,
nGlyphs, clusterMap, textProps,
glyphIndices, glyphProps, &nActualGlyphs);
if (hr == S_OK)
break;
if (hr != HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER))
die("error analyzing text with DirectWrite", hr);
delete[] glyphProps;
delete[] glyphIndices;
nGlyphs *= 2;
}
for (i = 0; i < nActualGlyphs; i++)
glyphs.push_back(glyphIndices[i]);
delete[] glyphProps;
delete[] glyphIndices;
delete[] textProps;
delete[] clusterMap;
});
printGlyphs("DirectWrite IDWriteTextAnalyzer", glyphs);
delete ss;
analyzer->Release();
}
