Add offscreen text rendering.

src/publishing/latex/LatexSymbols.cpp

@@ -0,0 +1,35 @@
+#include "LatexSymbols.h"
+
+#include "StringUtils.h"
+
+std::unordered_map<std::string, std::wstring> LatexSymbolLookup::mSymbols = { 
+	{"Psi", L"\u03A8"},
+	{"alpha", L"\u03B1"},
+	{"beta", L"\u03B2"},
+	{"gamma", L"\u03B3"},
+	{"psi", L"\u03C8"}
+};
+
+std::optional<std::string> LatexSymbolLookup::getSymbolUtf8(const std::string& tag)
+{
+	if (auto entry = getSymbolUtf16(tag); entry)
+	{
+		return StringUtils::convert(*entry);
+	}
+	else
+	{
+		return std::nullopt;
+	}
+}
+
+std::optional<std::wstring> LatexSymbolLookup::getSymbolUtf16(const std::string& tag)
+{
+	if (auto iter = mSymbols.find(tag); iter != mSymbols.end())
+	{
+		return iter->second;
+	}
+	else 
+	{
+		return std::nullopt;
+	}
+}

src/publishing/latex/LatexSymbols.h

@@ -22,5 +22,10 @@ struct LatexMathSymbol
 class LatexSymbolLookup
 {
 public:
-	std::unordered_map<std::string, LatexMathSymbol> mTags;
+	static std::optional<std::string> getSymbolUtf8(const std::string& tag);
+
+	static std::optional<std::wstring> getSymbolUtf16(const std::string& tag);
+
+private:
+	static std::unordered_map<std::string, std::wstring> mSymbols;
 };