private void AddMissingCharacters(TMP_FontAsset font)
{
font = GetNextDynamicFontAsset(font);
if (font == null)
{
return;
}
Dictionary <uint, int> charRefDictionary;
if (!m_FontCharacterLookupDictionary.TryGetValue(font, out charRefDictionary))
{
charRefDictionary = new Dictionary <uint, int>();
m_FontCharacterLookupDictionary.Add(font, charRefDictionary);
}
HashSet <char> nonexistentCharacters;
if (!m_CharNonexistentCharacters.TryGetValue(font, out nonexistentCharacters))
{
nonexistentCharacters = new HashSet <char>();
m_CharNonexistentCharacters.Add(font, nonexistentCharacters);
}
m_CharTryAddCharacters.Clear();
m_CharMissingCharacters2.Clear();
foreach (var charMissingCharacter in m_CharMissingCharacters)
{
// 如果已经被使用过，则使用计数+1
int count;
if (charRefDictionary.TryGetValue((uint)charMissingCharacter, out count))
{
count++;
charRefDictionary[charMissingCharacter] = count;
continue;
}
// 无法生成的字符，不计算
if (nonexistentCharacters.Contains(charMissingCharacter))
{
m_CharMissingCharacters2.Add(charMissingCharacter);
continue;
}
count = 1;
charRefDictionary.Add(charMissingCharacter, count);
// 优化，如果此字符已经动态生成，就不再放到生成串里
if (!(font.characterLookupTable != null && font.HasCharacter(charMissingCharacter)))
{
m_CharTryAddCharacters.Add(charMissingCharacter);
}
}
if (m_CharTryAddCharacters.Count > 0 && font.characterLookupTable != null)
{
m_CharMissingCharacters.Clear();
bool ret = font.TryAddCharacters(m_CharTryAddCharacters, m_CharMissingCharacters);
MissingCharactersToNonexistent(font, nonexistentCharacters, charRefDictionary);
foreach (var charMissingCharacter in m_CharMissingCharacters)
{
m_CharMissingCharacters2.Add(charMissingCharacter);
}
if (!ret)
{
ResetFontAssetData(font);
}
m_CharMissingCharacters.Clear();
foreach (var charMissingCharacter in m_CharMissingCharacters2)
{
m_CharMissingCharacters.Add(charMissingCharacter);
}
}
// 判断下一级回调
if (m_CharMissingCharacters.Count > 0)
{
AddMissingCharacters(font);
}
}
