tdf#103680: Implement SupportsOpenTypeMath in outdev

Change-Id: I425735e91ce83c6c2225ad562c3549067b80f053
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/207987
Tested-by: Jenkins
Reviewed-by: Khaled Hosny <khaled@libreoffice.org>

include/vcl/outdev.hxx

@@ -1200,7 +1200,7 @@ public:
 
     bool                        GetGlyphBoundRects( const Point& rOrigin, const OUString& rStr, int nIndex,
                                                     int nLen, std::vector< tools::Rectangle >& rVector ) const;
-
+    bool                        SupportsOpenTypeMath() const;
     sal_Int32                   HasGlyphs( const vcl::Font& rFont, std::u16string_view rStr,
                                            sal_Int32 nIndex = 0, sal_Int32 nLen = -1 ) const;
 

vcl/source/outdev/font.cxx

@@ -1405,6 +1405,20 @@ sal_Int32 OutputDevice::HasGlyphs( const vcl::Font& rTempFont, std::u16string_vi
     return -1;
 }
 
+bool OutputDevice::SupportsOpenTypeMath() const
+{
+    if (!ImplNewFont())
+        return false;
+
+    LogicalFontInstance* pFontInstance = mpFontInstance.get();
+
+    if (pFontInstance) {
+        auto pFace = pFontInstance->GetFontFace();
+        return pFace->HasOpenTypeMathTable();
+    }
+    return false;
+}
+
 void OutputDevice::ReleaseFontCache() { mxFontCache.reset(); }
 
 void OutputDevice::ReleaseFontCollection() { mxFontCollection.reset(); }