public GLine(int length)
{
Debug.Assert(length > 0);
_text = new char[length];
_firstWord = new GWord(TextDecoration.ClonedDefault(), 0, CharGroup.SingleByte);
_id = -1;
}
public GLine Export()
{
GWord w = new GWord(_decorations[0] == null? TextDecoration.ClonedDefault() : _decorations[0], 0, GLine.CalcCharGroup(_text[0]));
GLine line = new GLine(_text, w);
line.EOLType = _eolType;
int m = _text.Length;
for (int offset = 1; offset < m; offset++)
{
char ch = _text[offset];
if (ch == '\0')
{
break;
}
else if (ch == GLine.WIDECHAR_PAD)
{
continue;
}
TextDecoration dec = _decorations[offset];
if (_decorations[offset - 1] != dec || w.CharGroup != GLine.CalcCharGroup(ch))
{
if (dec == null)
{
dec = TextDecoration.ClonedDefault(); //!!本当はここがnullになっているのはありえないはず。後で調査すること
}
GWord ww = new GWord(dec, offset, GLine.CalcCharGroup(ch));
w.Next = ww;
w = ww;
}
}
return(line);
}
public void Clear()
{
for (int i = 0; i < _text.Length; i++)
{
_text[i] = '\0';
}
_firstWord = new GWord(TextDecoration.ClonedDefault(), 0, CharGroup.SingleByte);
}
//indexの位置の表示を反転した新しいGLineを返す
//inverseがfalseだと、GWordの分割はするがDecorationの反転はしない。ヒクヒク問題の対処として実装。
internal GLine InverseCaret(int index, bool inverse, bool underline)
{
ExpandBuffer(index + 1);
if (_text[index] == WIDECHAR_PAD)
{
index--;
}
GLine ret = new GLine(_text, null);
ret.ID = _id;
ret.EOLType = _eolType;
GWord w = _firstWord;
int nextoffset = 0;
while (w != null)
{
nextoffset = WordNextOffset(w);
if (w.Offset <= index && index < nextoffset)
{
//!!tailから順に連結した方が効率はよい
if (w.Offset < index)
{
GWord head = new GWord(w.Decoration, w.Offset, w.CharGroup);
ret.Append(head);
}
TextDecoration dec = (TextDecoration)w.Decoration.Clone();
if (inverse)
{
//色つきキャレットのサポート
dec.ToCaretStyle();
}
if (underline)
{
dec.Underline = true;
}
GWord mid = new GWord(dec, index, w.CharGroup);
ret.Append(mid);
if (index + CalcDisplayLength(_text[index]) < nextoffset)
{
GWord tail = new GWord(w.Decoration, index + CalcDisplayLength(_text[index]), w.CharGroup);
ret.Append(tail);
}
}
else
{
ret.Append(w.StandAloneClone());
}
w = w.Next;
}
//!!この、キャレット位置にスペースを入れるのはInverseとは違う処理であるから分離すること
if (nextoffset <= index)
{
while (nextoffset <= index)
{
Debug.Assert(nextoffset < ret.Text.Length);
ret.Text[nextoffset++] = ' ';
}
TextDecoration dec = TextDecoration.ClonedDefault();
if (inverse)
{
dec.ToCaretStyle();
}
if (underline)
{
dec.Underline = true;
}
ret.Append(new GWord(dec, index, CharGroup.SingleByte));
}
return(ret);
}