1 files changed, 19 insertions, 0 deletions
diff --git a/src/mbgl/text/glyph_manager_observer.hpp b/src/mbgl/text/glyph_manager_observer.hpp
new file mode 100644
index 0000000000..b8678e060a
--- /dev/null
+++ b/src/mbgl/text/glyph_manager_observer.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <mbgl/style/types.hpp>
+#include <mbgl/text/glyph_range.hpp>
+#include <mbgl/util/font_stack.hpp>
+
+#include <exception>
+
+namespace mbgl {
+
+class GlyphManagerObserver {
+public:
+    virtual ~GlyphManagerObserver() = default;
+
+    virtual void onGlyphsLoaded(const FontStack&, const GlyphRange&) {}
+    virtual void onGlyphsError(const FontStack&, const GlyphRange&, std::exception_ptr) {}
+};
+
+} // namespace mbgl