root/Source/platform/fonts/GenericFontFamilySettings.h

INCLUDED FROM

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#ifndef GenericFontFamilySettings_h
#define GenericFontFamilySettings_h

#include "platform/PlatformExport.h"
#include "wtf/HashMap.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/AtomicStringHash.h"

#include <unicode/uscript.h>

namespace WebCore {

class PLATFORM_EXPORT GenericFontFamilySettings {
    WTF_MAKE_FAST_ALLOCATED;

public:
    GenericFontFamilySettings()
    {
    }

    explicit GenericFontFamilySettings(const GenericFontFamilySettings&);

    void setStandard(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& standard(UScriptCode = USCRIPT_COMMON) const;

    void setFixed(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& fixed(UScriptCode = USCRIPT_COMMON) const;

    void setSerif(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& serif(UScriptCode = USCRIPT_COMMON) const;

    void setSansSerif(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& sansSerif(UScriptCode = USCRIPT_COMMON) const;

    void setCursive(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& cursive(UScriptCode = USCRIPT_COMMON) const;

    void setFantasy(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& fantasy(UScriptCode = USCRIPT_COMMON) const;

    void setPictograph(const AtomicString&, UScriptCode = USCRIPT_COMMON);
    const AtomicString& pictograph(UScriptCode = USCRIPT_COMMON) const;

    // Only called by InternalSettings to clear font family maps.
    void reset();

    GenericFontFamilySettings& operator=(const GenericFontFamilySettings&);

private:
    // UScriptCode uses -1 and 0 for UScriptInvalidCode and UScriptCommon.
    // We need to use -2 and -3 for empty value and deleted value.
    struct UScriptCodeHashTraits : WTF::GenericHashTraits<int> {
        static const bool emptyValueIsZero = false;
        static int emptyValue() { return -2; }
        static void constructDeletedValue(int& slot) { slot = -3; }
        static bool isDeletedValue(int value) { return value == -3; }
    };

    typedef HashMap<int, AtomicString, DefaultHash<int>::Hash, UScriptCodeHashTraits> ScriptFontFamilyMap;

    void setGenericFontFamilyMap(ScriptFontFamilyMap&, const AtomicString&, UScriptCode);
    const AtomicString& genericFontFamilyForScript(const ScriptFontFamilyMap&, UScriptCode) const;

    ScriptFontFamilyMap m_standardFontFamilyMap;
    ScriptFontFamilyMap m_serifFontFamilyMap;
    ScriptFontFamilyMap m_fixedFontFamilyMap;
    ScriptFontFamilyMap m_sansSerifFontFamilyMap;
    ScriptFontFamilyMap m_cursiveFontFamilyMap;
    ScriptFontFamilyMap m_fantasyFontFamilyMap;
    ScriptFontFamilyMap m_pictographFontFamilyMap;
};

}

#endif