/// <summary>
/// Constructor
/// </summary>
/// <param name="highSurrogate">high surrogate code</param>
/// <param name="lowSurrogate">low surrogate code</param>
/// <param name="cjk">allow cjk mode</param>
public UnicodeChar(char highSurrogate, char lowSurrogate, bool cjk)
{
uint codePoint = Unicode.SurrogatePairToCodePoint(highSurrogate, lowSurrogate);
UnicodeCharFlags flags = Unicode.DetermineUnicodeCharFlags(codePoint, cjk);
_bits = codePoint | (uint)flags;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="ch">a character</param>
/// <param name="cjk">allow cjk mode</param>
public UnicodeChar(char ch, bool cjk)
{
uint codePoint = (uint)ch;
UnicodeCharFlags flags = Unicode.DetermineUnicodeCharFlags(codePoint, cjk);
_bits = codePoint | (uint)flags;
}
public static GLine CreateSimpleGLine(string text, TextDecoration dec)
{
char[] buff = new char[text.Length * 2];
int offset = 0;
int start = 0;
CharGroup prevType = CharGroup.LatinHankaku;
GWord firstWord = null;
GWord lastWord = null;
for (int i = 0; i < text.Length; i++)
{
char originalChar = text[i];
char privateChar = Unicode.ToPrivate(originalChar);
CharGroup nextType = Unicode.GetCharGroup(privateChar);
int size = CharGroupUtil.GetColumnsPerCharacter(nextType);
if (nextType != prevType)
{
if (offset > start)
{
GWord newWord = new GWord(dec, start, prevType);
if (lastWord == null)
{
firstWord = lastWord = newWord;
}
else
{
lastWord.Next = newWord;
lastWord = newWord;
}
}
prevType = nextType;
start = offset;
}
buff[offset++] = originalChar;
if (size == 2)
{
buff[offset++] = WIDECHAR_PAD;
}
}
GWord w = new GWord(dec, start, prevType);
if (lastWord == null)
{
firstWord = w;
}
else
{
lastWord.Next = w;
}
return(new GLine(buff, offset, firstWord));
}
/// <summary>
/// <ja>
/// 指定位置に1文字書き込みます。
/// </ja>
/// <en>
/// Write one character to specified position.
/// </en>
/// </summary>
/// <param name="ch"><ja>書き込む文字</ja><en>Character to write.</en></param>
/// <param name="dec"><ja>テキスト書式を指定するTextDecorationオブジェクト</ja>
/// <en>TextDecoration object that specifies text format
/// </en></param>
public void PutChar(char ch, TextDecoration dec)
{
Debug.Assert(dec != null);
Debug.Assert(_caretColumn >= 0);
Debug.Assert(_caretColumn < _text.Length);
char originalChar = Unicode.ToOriginal(ch);
CharGroup charGroup = Unicode.GetCharGroup(ch);
bool onZenkaku = (_attrs[_caretColumn].CharGroup == CharGroup.CJKZenkaku);
bool onZenkakuRight = (_text[_caretColumn] == GLine.WIDECHAR_PAD);
if (onZenkaku)
{
//全角の上に書く
if (!onZenkakuRight)
{
_text[_caretColumn] = originalChar;
_attrs[_caretColumn] = new CharAttr(dec, charGroup);
if (CharGroupUtil.GetColumnsPerCharacter(charGroup) == 1)
{
//全角の上に半角を書いた場合、隣にスペースを入れないと表示が乱れる
_caretColumn++;
if (_caretColumn < _text.Length)
{
_text[_caretColumn] = ' ';
_attrs[_caretColumn].CharGroup = CharGroup.LatinHankaku;
}
}
else
{
_attrs[_caretColumn + 1] = new CharAttr(dec, charGroup);
_caretColumn += 2;
}
}
else
{
_text[_caretColumn - 1] = ' ';
_attrs[_caretColumn - 1].CharGroup = CharGroup.LatinHankaku;
_text[_caretColumn] = originalChar;
_attrs[_caretColumn] = new CharAttr(dec, charGroup);
if (CharGroupUtil.GetColumnsPerCharacter(charGroup) == 2)
{
if (CharGroupUtil.GetColumnsPerCharacter(_attrs[_caretColumn + 1].CharGroup) == 2)
{
if (_caretColumn + 2 < _text.Length)
{
_text[_caretColumn + 2] = ' ';
_attrs[_caretColumn + 2].CharGroup = CharGroup.LatinHankaku;
}
}
_text[_caretColumn + 1] = GLine.WIDECHAR_PAD;
_attrs[_caretColumn + 1] = _attrs[_caretColumn];
_caretColumn += 2;
}
else
{
_caretColumn++;
}
}
}
else //半角の上に書く
{
_text[_caretColumn] = originalChar;
_attrs[_caretColumn] = new CharAttr(dec, charGroup);
if (CharGroupUtil.GetColumnsPerCharacter(charGroup) == 2)
{
if (CharGroupUtil.GetColumnsPerCharacter(_attrs[_caretColumn + 1].CharGroup) == 2) //半角、全角となっているところに全角を書いたら
{
if (_caretColumn + 2 < _text.Length)
{
_text[_caretColumn + 2] = ' ';
_attrs[_caretColumn + 2].CharGroup = CharGroup.LatinHankaku;
}
}
_text[_caretColumn + 1] = GLine.WIDECHAR_PAD;
_attrs[_caretColumn + 1] = _attrs[_caretColumn];
_caretColumn += 2;
}
else
{
_caretColumn++; //これが最もcommonなケースだが
}
}
}
/// <summary>
/// Copy character into the char array in UTF-16.
/// </summary>
/// <param name="seq">destination array</param>
/// <param name="index">start index of the array</param>
/// <returns>char count written</returns>
public int WriteTo(char[] seq, int index)
{
return(Unicode.WriteCodePointTo(this._bits & CodePointMask, seq, index));
}
