Add LayoutLocale class

third_party/WebKit/Source/platform/fonts/FontLocale.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FontLocale_h
+#define FontLocale_h

[drott, 2016/07/19 15:28:53]

I am thinking about the naming, I don't have a strong opinion but is it a
FontLocale or rather a TextLocale? We happen to keep it in FontDescription, but
it's not coming from the font* CSS but from lang tags, headers, etc.

[kojii, 2016/07/20 06:01:53]

Yeah, thought about it, but we have text/PlatformLocale that handles number/date
formatting etc., which is also "text".

What about LayoutLocale? We will use this class to store layout-related
information.

[drott, 2016/07/21 09:23:49]

Yes, that'd work.

+
+#include "platform/PlatformExport.h"
+#include "wtf/Forward.h"
+#include "wtf/RefCounted.h"
+#include "wtf/text/AtomicString.h"
+
+#include <unicode/uscript.h>
+
+namespace blink {
+
+class Hyphenation;
+
+class PLATFORM_EXPORT FontLocale : public RefCounted<FontLocale> {
+public:
+    static const FontLocale* get(const AtomicString& locale);
+    static const FontLocale& getDefault();
+
+    operator const AtomicString&() const { return m_string; }
+    const AtomicString& localeString() const { return m_string; }
+    CString ascii() const { return m_string.ascii(); }
+
+    UScriptCode script() const { return m_script; }
+    const void* harfbuzzLanguage() const { return m_harfbuzzLanguage; }
+    const CString& localeForSkFontMgr() const;
+
+    Hyphenation* getHyphenation() const;
+
+private:
+    FontLocale(const AtomicString&);
+
+    AtomicString m_string;
+    mutable CString m_stringForSkFontMgr;
+    UScriptCode m_script;
+    // hb_language_t is defined in hb.h, which not all files can include.
+    const void* m_harfbuzzLanguage;
+};
+
+} // namespace blink
+
+#endif // FontLocale_h