public void DeleteCurrentChar()
{
if (CurrentParagraph.Length == 1)
{
// Delete current line
if (CurrentParagraphIndex < Paragraphs.Count - 1)
{
Paragraphs.RemoveAt(CurrentParagraphIndex);
}
}
else if (CursorPosition == CurrentParagraph.Length - 1)
{
if (CurrentParagraphIndex < Paragraphs.Count - 1)
{
// merge with next line
Paragraph cp = CurrentParagraph;
Paragraph np = Paragraphs [CurrentParagraphIndex + 1];
cp.Glyphs.RemoveLast();
foreach (GlyphChar g in np.Glyphs)
{
cp.Glyphs.AddLast(g);
}
cp.NeedsWordWrap = true;
cp.WordWrap(BreakWidth);
Paragraphs.Remove(np);
}
}
else
{
// remove current character from current position
CurrentParagraph.RemoveChar(CursorPosition);
}
//Paragraphs.OnUpdateAsync (CurrentParagraphIndex, BreakWidth);
Paragraphs.OnUpdate(CurrentParagraphIndex, BreakWidth, false, 250);
CurrentParagraphIndex = CurrentParagraphIndex.Clamp(0, Paragraphs.Count - 1);
}
public void InsertLineBreak()
{
if (CursorPosition >= CurrentParagraph.Length - 1)
{
if (CurrentParagraphIndex >= Paragraphs.Count - 1)
{
// most common case: Writing at the edge
Paragraphs.AddLast(new Paragraph(Paragraphs.Count, BreakWidth, String.Empty, Font, Flags));
MoveNextChar();
}
else
{
MoveNextChar();
Paragraph current = CurrentParagraph;
Paragraph para = new Paragraph(CurrentParagraphIndex, BreakWidth, "\n", Font, Flags);
para.LineOffset = current.LineOffset;
para.Height = LineHeight;
Paragraphs.Insert(CurrentParagraphIndex, para);
//current = CurrentParagraph;
}
}
else if (CursorPosition == 0)
{
Paragraph current = CurrentParagraph;
Paragraph para = new Paragraph(CurrentParagraphIndex, BreakWidth, "\n", Font, Flags);
para.LineOffset = current.LineOffset;
para.Height = LineHeight;
para.Top = current.Top;
Paragraphs.Insert(CurrentParagraphIndex, para);
CurrentParagraphIndex++;
}
else
{
Paragraph para = new Paragraph(CurrentParagraphIndex + 1, BreakWidth);
Paragraph cp = CurrentParagraph;
GlyphList.Node np = cp.Glyphs.Head;
for (int i = 0; i < CursorPosition - 1; i++)
{
np = np.Next;
}
GlyphList.Node npTail = np;
np = np.Next;
while (np != null)
{
para.Glyphs.AddLast(np.Value);
np = np.Next;
}
para.NeedsWordWrap = true;
// cut np..
npTail.Next = null;
cp.Glyphs.ResetCurrent();
cp.AppendChar('\n', Font, Flags);
Paragraphs.Insert(++CurrentParagraphIndex, para);
}
CurrentParagraphIndex = CurrentParagraphIndex.Clamp(0, Paragraphs.Count - 1);
CursorPosition = 0;
ResetCursorColoumns();
//Paragraphs.OnUpdateAsync (CurrentParagraphIndex - 1, BreakWidth);
Paragraphs.OnUpdate(CurrentParagraphIndex - 1, BreakWidth, false, 250);
}