third_party/WebKit/Source/platform/fonts/GenericFontFamilySettings.cpp

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#include "platform/fonts/GenericFontFamilySettings.h"

#include "platform/fonts/FontCache.h"

namespace blink {

GenericFontFamilySettings::GenericFontFamilySettings(
    const GenericFontFamilySettings& other)
    : m_standardFontFamilyMap(other.m_standardFontFamilyMap),
      m_serifFontFamilyMap(other.m_serifFontFamilyMap),
      m_fixedFontFamilyMap(other.m_fixedFontFamilyMap),
      m_sansSerifFontFamilyMap(other.m_sansSerifFontFamilyMap),
      m_cursiveFontFamilyMap(other.m_cursiveFontFamilyMap),
      m_fantasyFontFamilyMap(other.m_fantasyFontFamilyMap),
      m_pictographFontFamilyMap(other.m_pictographFontFamilyMap) {}

GenericFontFamilySettings& GenericFontFamilySettings::operator=(
    const GenericFontFamilySettings& other) {
  m_standardFontFamilyMap = other.m_standardFontFamilyMap;
  m_serifFontFamilyMap = other.m_serifFontFamilyMap;
  m_fixedFontFamilyMap = other.m_fixedFontFamilyMap;
  m_sansSerifFontFamilyMap = other.m_sansSerifFontFamilyMap;
  m_cursiveFontFamilyMap = other.m_cursiveFontFamilyMap;
  m_fantasyFontFamilyMap = other.m_fantasyFontFamilyMap;
  m_pictographFontFamilyMap = other.m_pictographFontFamilyMap;
  return *this;
}

// Sets the entry in the font map for the given script. If family is the empty
// string, removes the entry instead.
void GenericFontFamilySettings::setGenericFontFamilyMap(
    ScriptFontFamilyMap& fontMap,
    const AtomicString& family,
    UScriptCode script) {
  ScriptFontFamilyMap::iterator it = fontMap.find(static_cast<int>(script));
  if (family.isEmpty()) {
    if (it == fontMap.end())
      return;
    fontMap.remove(it);
  } else if (it != fontMap.end() && it->value == family) {
    return;
  } else {
    fontMap.set(static_cast<int>(script), family);
  }
}

const AtomicString& GenericFontFamilySettings::genericFontFamilyForScript(
    const ScriptFontFamilyMap& fontMap,
    UScriptCode script) const {
  ScriptFontFamilyMap::iterator it =
      const_cast<ScriptFontFamilyMap&>(fontMap).find(static_cast<int>(script));
  if (it != fontMap.end()) {
    // Replace with the first available font if it starts with ",".
    if (!it->value.isEmpty() && it->value[0] == ',')
      it->value = AtomicString(FontCache::firstAvailableOrFirst(it->value));
    return it->value;
  }
  if (script != USCRIPT_COMMON)
    return genericFontFamilyForScript(fontMap, USCRIPT_COMMON);
  return emptyAtom;
}

const AtomicString& GenericFontFamilySettings::standard(
    UScriptCode script) const {
  return genericFontFamilyForScript(m_standardFontFamilyMap, script);
}

bool GenericFontFamilySettings::updateStandard(const AtomicString& family,
                                               UScriptCode script) {
  if (family == standard())
    return false;
  setGenericFontFamilyMap(m_standardFontFamilyMap, family, script);
  return true;
}

const AtomicString& GenericFontFamilySettings::fixed(UScriptCode script) const {
  return genericFontFamilyForScript(m_fixedFontFamilyMap, script);
}

bool GenericFontFamilySettings::updateFixed(const AtomicString& family,
                                            UScriptCode script) {
  if (family == fixed())
    return false;
  setGenericFontFamilyMap(m_fixedFontFamilyMap, family, script);
  return true;
}

const AtomicString& GenericFontFamilySettings::serif(UScriptCode script) const {
  return genericFontFamilyForScript(m_serifFontFamilyMap, script);
}

bool GenericFontFamilySettings::updateSerif(const AtomicString& family,
                                            UScriptCode script) {
  if (family == serif())
    return false;
  setGenericFontFamilyMap(m_serifFontFamilyMap, family, script);
  return true;
}

const AtomicString& GenericFontFamilySettings::sansSerif(
    UScriptCode script) const {
  return genericFontFamilyForScript(m_sansSerifFontFamilyMap, script);
}

bool GenericFontFamilySettings::updateSansSerif(const AtomicString& family,
                                                UScriptCode script) {
  if (family == sansSerif())
    return false;
  setGenericFontFamilyMap(m_sansSerifFontFamilyMap, family, script);
  return true;
}

const AtomicString& GenericFontFamilySettings::cursive(
    UScriptCode script) const {
  return genericFontFamilyForScript(m_cursiveFontFamilyMap, script);
}

bool GenericFontFamilySettings::updateCursive(const AtomicString& family,
                                              UScriptCode script) {
  if (family == cursive())
    return false;
  setGenericFontFamilyMap(m_cursiveFontFamilyMap, family, script);
  return true;
}

const AtomicString& GenericFontFamilySettings::fantasy(
    UScriptCode script) const {
  return genericFontFamilyForScript(m_fantasyFontFamilyMap, script);
}

bool GenericFontFamilySettings::updateFantasy(const AtomicString& family,
                                              UScriptCode script) {
  if (family == fantasy())
    return false;
  setGenericFontFamilyMap(m_fantasyFontFamilyMap, family, script);
  return true;
}

const AtomicString& GenericFontFamilySettings::pictograph(
    UScriptCode script) const {
  return genericFontFamilyForScript(m_pictographFontFamilyMap, script);
}

bool GenericFontFamilySettings::updatePictograph(const AtomicString& family,
                                                 UScriptCode script) {
  if (family == pictograph())
    return false;
  setGenericFontFamilyMap(m_pictographFontFamilyMap, family, script);
  return true;
}

void GenericFontFamilySettings::reset() {
  m_standardFontFamilyMap.clear();
  m_serifFontFamilyMap.clear();
  m_fixedFontFamilyMap.clear();
  m_sansSerifFontFamilyMap.clear();
  m_cursiveFontFamilyMap.clear();
  m_fantasyFontFamilyMap.clear();
  m_pictographFontFamilyMap.clear();
}

}  // namespace blink