/// <summary>
///
/// </summary>
private void BuildTextBlocks()
{
// 1. Search for first tag
// 2. If one is found, find its end position.
// A. If end position not found, throw error.
// 3. Create separate string containing the block of text.
// 4. Search for inner tags.
// 5. Build blocks of rich text info.
// 6. Once the entire text is archived, layout the text line by line.
// go through the text block once.
// 1. Start by finding the first tag in the block.
var text = Text;
for (int j = 0; j < Text.Length; j++)
{
var firstTag = _hTMLTags[0];
var position = text.Length - 1;
for (int i = 0; i < _hTMLTags.Count; i++)
{
var index = text.IndexOf(_hTMLTags[i]);
if (index < position && index > -1)
{
position = index;
firstTag = _hTMLTags[i];
}
}
// If the first tag is not at the beginning, add this string to the list.
if (position != 0 && position != text.Length - 1)
{
var info = new RichTextInfo();
info.StartIndex = j;
info.EndIndex = j + position - 1;
info.Font = FontFamily;
info.Text = Text.Substring(info.StartIndex, position - 1);
_richTextInfo.Add(info);
position--;
}
else if (position == text.Length - 1)
{
return;
}
// Extract the first excerpt with tags.
var s = ExtractRawString(firstTag, j + position);
// Determine fonts, etc. and add to the list.
BuildTextInfo(s, j + position);
j = _richTextInfo[_richTextInfo.Count - 1].EndIndex;
text = Text.Substring(j);
}
}
/// <summary>
///
/// </summary>
/// <param name="s"></param>
/// <param name="position"> </param>
private void BuildTextInfo(string s, int position)
{
// 1. Search for inner tags.
var tags = CollectTags(s);
// 2. Determine the correct font.
var font = BuildFontFamily(tags);
var tLength = s.Length;
// 3. Remove all tags.
var text = RemoveTags(s);
// 4. Build the rich text info.
var info = new RichTextInfo();
info.StartIndex = position;
info.EndIndex = position + tLength;
info.Font = font;
info.Text = text;
_richTextInfo.Add(info);
}
