First Commit

libui-ng/windows/opentype.cpp

@@ -0,0 +1,33 @@
+// 11 may 2017
+#include "uipriv_windows.hpp"
+#include "attrstr.hpp"
+
+// TODO pull out my decision for empty uiOpenTypeFeatures, assuming that it isn't in another file or that I even made one
+
+static uiForEach addToTypography(const uiOpenTypeFeatures *otf, char a, char b, char c, char d, uint32_t value, void *data)
+{
+	IDWriteTypography *dt = (IDWriteTypography *) data;
+	DWRITE_FONT_FEATURE dff;
+	HRESULT hr;
+
+	ZeroMemory(&dff, sizeof (DWRITE_FONT_FEATURE));
+	// yes, the cast here is necessary (the compiler will complain otherwise)...
+	dff.nameTag = (DWRITE_FONT_FEATURE_TAG) DWRITE_MAKE_OPENTYPE_TAG(a, b, c, d);
+	dff.parameter = (UINT32) value;
+	hr = dt->AddFontFeature(dff);
+	if (hr != S_OK)
+		logHRESULT(L"error adding OpenType feature to IDWriteTypography", hr);
+	return uiForEachContinue;
+}
+
+IDWriteTypography *uiprivOpenTypeFeaturesToIDWriteTypography(const uiOpenTypeFeatures *otf)
+{
+	IDWriteTypography *dt;
+	HRESULT hr;
+
+	hr = dwfactory->CreateTypography(&dt);
+	if (hr != S_OK)
+		logHRESULT(L"error creating IDWriteTypography", hr);
+	uiOpenTypeFeaturesForEach(otf, addToTypography, dt);
+	return dt;
+}