1 files changed, 52 insertions, 0 deletions
diff --git a/vcl/inc/font/FeatureCollector.hxx b/vcl/inc/font/FeatureCollector.hxx
new file mode 100644
index 000000000..9148048f1
--- /dev/null
+++ b/vcl/inc/font/FeatureCollector.hxx
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#ifndef INCLUDED_VCL_INC_FONT_FEATURECOLLECTOR_HXX
+#define INCLUDED_VCL_INC_FONT_FEATURECOLLECTOR_HXX
+
+#include <vcl/font/Feature.hxx>
+#include <hb.h>
+#include <i18nlangtag/lang.h>
+
+namespace vcl::font
+{
+class FeatureCollector
+{
+private:
+    hb_face_t* m_pHbFace;
+    std::vector<vcl::font::Feature>& m_rFontFeatures;
+    LanguageType m_eLanguageType;
+
+public:
+    FeatureCollector(hb_face_t* pHbFace, std::vector<vcl::font::Feature>& rFontFeatures,
+                     LanguageType eLanguageType)
+        : m_pHbFace(pHbFace)
+        , m_rFontFeatures(rFontFeatures)
+        , m_eLanguageType(eLanguageType)
+    {
+    }
+
+private:
+    void collectForLanguage(hb_tag_t aTableTag, sal_uInt32 nScript, hb_tag_t aScriptTag,
+                            sal_uInt32 nLanguage, hb_tag_t aLanguageTag);
+
+    void collectForScript(hb_tag_t aTableTag, sal_uInt32 nScript, hb_tag_t aScriptTag);
+    void collectForTable(hb_tag_t aTableTag);
+    bool collectGraphite();
+
+public:
+    bool collect();
+};
+
+} // namespace vcl::font
+
+#endif // INCLUDED_VCL_INC_FONT_FEATURECOLLECTOR_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */