FontGenericFamilies.cpp [plain text]
#include "config.h"
#include "FontGenericFamilies.h"
#include <wtf/Language.h>
namespace WebCore {
static bool setGenericFontFamilyForScript(ScriptFontFamilyMap& fontMap, const AtomicString& family, UScriptCode script)
{
if (family.isEmpty())
return fontMap.remove(static_cast<int>(script));
auto& familyInMap = fontMap.add(static_cast<int>(script), AtomicString { }).iterator->value;
if (familyInMap == family)
return false;
familyInMap = family;
return true;
}
static inline bool computeUserPrefersSimplified()
{
const Vector<String>& preferredLanguages = userPreferredLanguages();
for (auto& language : preferredLanguages) {
if (equalIgnoringASCIICase(language, "zh-tw"))
return false;
if (equalIgnoringASCIICase(language, "zh-cn"))
return true;
}
return true;
}
static bool& cachedUserPrefersSimplified()
{
static bool cached = true;
return cached;
}
static void languageChanged(void*)
{
cachedUserPrefersSimplified() = computeUserPrefersSimplified();
}
static const AtomicString& genericFontFamilyForScript(const ScriptFontFamilyMap& fontMap, UScriptCode script)
{
ScriptFontFamilyMap::const_iterator it = fontMap.find(static_cast<int>(script));
if (it != fontMap.end())
return it->value;
if (script == USCRIPT_HAN) {
it = fontMap.find(static_cast<int>(cachedUserPrefersSimplified() ? USCRIPT_SIMPLIFIED_HAN : USCRIPT_TRADITIONAL_HAN));
if (it != fontMap.end())
return it->value;
}
if (script != USCRIPT_COMMON)
return genericFontFamilyForScript(fontMap, USCRIPT_COMMON);
return emptyAtom();
}
FontGenericFamilies::FontGenericFamilies()
{
addLanguageChangeObserver(this, &languageChanged);
languageChanged(nullptr);
}
const AtomicString& FontGenericFamilies::standardFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_standardFontFamilyMap, script);
}
const AtomicString& FontGenericFamilies::fixedFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_fixedFontFamilyMap, script);
}
const AtomicString& FontGenericFamilies::serifFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_serifFontFamilyMap, script);
}
const AtomicString& FontGenericFamilies::sansSerifFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_sansSerifFontFamilyMap, script);
}
const AtomicString& FontGenericFamilies::cursiveFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_cursiveFontFamilyMap, script);
}
const AtomicString& FontGenericFamilies::fantasyFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_fantasyFontFamilyMap, script);
}
const AtomicString& FontGenericFamilies::pictographFontFamily(UScriptCode script) const
{
return genericFontFamilyForScript(m_pictographFontFamilyMap, script);
}
bool FontGenericFamilies::setStandardFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_standardFontFamilyMap, family, script);
}
bool FontGenericFamilies::setFixedFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_fixedFontFamilyMap, family, script);
}
bool FontGenericFamilies::setSerifFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_serifFontFamilyMap, family, script);
}
bool FontGenericFamilies::setSansSerifFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_sansSerifFontFamilyMap, family, script);
}
bool FontGenericFamilies::setCursiveFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_cursiveFontFamilyMap, family, script);
}
bool FontGenericFamilies::setFantasyFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_fantasyFontFamilyMap, family, script);
}
bool FontGenericFamilies::setPictographFontFamily(const AtomicString& family, UScriptCode script)
{
return setGenericFontFamilyForScript(m_pictographFontFamilyMap, family, script);
}
}