public static RichTextBlock Format(RichTextBlock block, int width, IntPtr hdc)
{
RichTextBlock result = new RichTextBlock(block.Parameters);
foreach (RichText line in block.Lines)
{
result.AddLines(Format(line, width, hdc));
}
return(result);
}
public int AddLines(RichTextBlock lines)
{
Debug.Assert(lines != null);
int result = -1;
foreach (RichText line in lines.Lines)
{
result = myLines.Add(line);
}
return(result);
}
public static RichTextBlock Format(RichText text, int width, IntPtr hdc)
{
RichTextBlock block = new RichTextBlock(new RichTextBlockParameters(1));
while (text.GetSize(hdc).Width >= width)
{
int[] positions = GetPossibleDivisionOffsets(text.Text);
RichText[] parts, oldParts;
oldParts = new RichText[] { text, new RichText("", text.Parameters) };
foreach (int position in positions)
{
parts = text.Split(position);
if (parts[0].GetSize(hdc).Width > width)
{
break;
}
oldParts = parts;
}
block.AddLine(oldParts[0]);
if (oldParts[0].Length == 0) // prevent endless loop
{
break;
}
text = oldParts[1];
}
block.AddLine(text);
return(block);
}