private static string ProcessTags(RichTextBox rtb, List<KeyValuePair<int, string>> colFormat, bool bParaFormat)
{
StringBuilder sbT = new StringBuilder();
ctformatStates bold = ctformatStates.nctNone;
ctformatStates bitalic = ctformatStates.nctNone;
ctformatStates bstrikeout = ctformatStates.nctNone;
ctformatStates bunderline = ctformatStates.nctNone;
ctformatStates super = ctformatStates.nctNone;
ctformatStates sub = ctformatStates.nctNone;
ctformatStates bacenter = ctformatStates.nctNone;
ctformatStates baleft = ctformatStates.nctNone;
ctformatStates baright = ctformatStates.nctNone;
ctformatStates bnumbering = ctformatStates.nctNone;
bool fontSet = false;
string strFont = "";
Int32 crFont = 0;
Color color = new Color();
int yHeight = 0;
int i = 0;
int pos = 0;
int k = rtb.TextLength;
char[] chtrim = { ' ', '\x0000' };
//--------------------------------
// this is an inefficient method to get text format
// but RichTextBox doesn't provide another method to
// get something like an array of charformat and paraformat
//--------------------------------
for (i = 0; i < k; i++)
{
// select one character
rtb.Select(i, 1);
string strChar = rtb.SelectedText;
// get format for this character
CHARFORMAT cf = rtb.GetCharFormat();
PARAFORMAT pf = rtb.GetParaFormat();
string strfname = cf.szFaceName;
strfname = strfname.Trim(chtrim);
// new font format ?
if ((strFont != strfname) || (crFont != cf.crTextColor) || (yHeight != cf.yHeight))
{
KeyValuePair<int, string> mfr;
if (strFont != "")
{
// close previous <font> tag
mfr = new KeyValuePair<int, string>(pos, "</font>");
colFormat.Add(mfr);
}
// save this for cache
strFont = strfname;
crFont = cf.crTextColor;
yHeight = cf.yHeight;
fontSet = strFont != "";
// font size should be translate to
// html size (Approximately)
int fsize = yHeight / (20 * 5);
// color object from COLORREF
color = GetColor(crFont);
// add <font> tag
string strcolor = string.Concat("#", (color.ToArgb() & 0x00FFFFFF).ToString("X6"));
mfr = new KeyValuePair<int, string>(pos, "<font face=\"" + strFont + "\" color=\"" + strcolor + "\" size=\"" + fsize + "\">");
colFormat.Add(mfr);
}
// are we in another line ?
if ((strChar == "\r") || (strChar == "\n"))
{
// yes?
// then, we need to reset paragraph format
// and character format
if (bParaFormat)
{
bnumbering = ctformatStates.nctNone;
baleft = ctformatStates.nctNone;
baright = ctformatStates.nctNone;
bacenter = ctformatStates.nctNone;
}
// close previous tags
// is italic? => close it
if (bitalic != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</i>");
colFormat.Add(mfr);
bitalic = ctformatStates.nctNone;
}
// is bold? => close it
if (bold != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</b>");
colFormat.Add(mfr);
bold = ctformatStates.nctNone;
}
// is underline? => close it
if (bunderline != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</u>");
colFormat.Add(mfr);
bunderline = ctformatStates.nctNone;
}
// is strikeout? => close it
if (bstrikeout != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</s>");
colFormat.Add(mfr);
bstrikeout = ctformatStates.nctNone;
}
// is super? => close it
if (super != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</sup>");
colFormat.Add(mfr);
super = ctformatStates.nctNone;
}
// is sub? => close it
if (sub != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</sub>");
colFormat.Add(mfr);
sub = ctformatStates.nctNone;
}
}
// now, process the paragraph format,
// managing states: none, new, continue {with previous}, reset
if (bParaFormat)
{
// align to center?
UpdateState(pf.wAlignment == PFA.CENTER, ref bacenter);
if (bacenter == ctformatStates.nctNew)
{
var mfr = new KeyValuePair<int, string>(pos, "<p align=\"center\">");
colFormat.Add(mfr);
}
else if (bacenter == ctformatStates.nctReset)
bacenter = ctformatStates.nctNone;
// align to left
UpdateState(pf.wAlignment == PFA.LEFT, ref baleft);
if (baleft == ctformatStates.nctNew)
{
var mfr = new KeyValuePair<int, string>(pos, "<p align=\"left\">");
colFormat.Add(mfr);
}
else if (baleft == ctformatStates.nctReset)
baleft = ctformatStates.nctNone;
// align to right
UpdateState(pf.wAlignment == PFA.RIGHT, ref baright);
if (baright == ctformatStates.nctNew)
{
var mfr = new KeyValuePair<int, string>(pos, "<p align=\"right\">");
colFormat.Add(mfr);
}
else if (baright == ctformatStates.nctReset)
baright = ctformatStates.nctNone;
// bullet
UpdateState(pf.wNumbering == PFN.BULLET, ref bnumbering);
if (bnumbering == ctformatStates.nctNew)
{
var mfr = new KeyValuePair<int, string>(pos, "<li>");
colFormat.Add(mfr);
}
else if (bnumbering == ctformatStates.nctReset)
bnumbering = ctformatStates.nctNone;
}
// bold
UpdateState((cf.dwEffects & CFE.BOLD) == CFE.BOLD, ref bold);
AddTag(pos, "b", colFormat, ref bold);
// Italic
UpdateState((cf.dwEffects & CFE.ITALIC) == CFE.ITALIC, ref bitalic);
AddTag(pos, "i", colFormat, ref bitalic);
// strikeout
UpdateState((cf.dwEffects & CFE.STRIKEOUT) == CFE.STRIKEOUT, ref bstrikeout);
AddTag(pos, "s", colFormat, ref bstrikeout);
// underline
UpdateState((cf.dwEffects & CFE.UNDERLINE) == CFE.UNDERLINE, ref bunderline);
AddTag(pos, "u", colFormat, ref bunderline);
// superscript
UpdateState((cf.dwEffects & CFE.SUPERSCRIPT) == CFE.SUPERSCRIPT, ref super);
AddTag(pos, "sup", colFormat, ref super);
// subscript
UpdateState((cf.dwEffects & CFE.SUBSCRIPT) == CFE.SUBSCRIPT, ref sub);
AddTag(pos, "sub", colFormat, ref sub);
sbT.Append(strChar);
pos = sbT.Length;
}
// close pending tags
if (bold != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</b>");
colFormat.Add(mfr);
}
if (bitalic != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</i>");
colFormat.Add(mfr);
}
if (bstrikeout != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</s>");
colFormat.Add(mfr);
}
if (bunderline != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</u>");
colFormat.Add(mfr);
}
if (super != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</sup>");
colFormat.Add(mfr);
}
if (sub != ctformatStates.nctNone)
{
var mfr = new KeyValuePair<int, string>(pos, "</sub>");
colFormat.Add(mfr);
}
if (fontSet)
{
// close pending font format
var mfr = new KeyValuePair<int, string>(pos, "</font>");
colFormat.Add(mfr);
}
// now, reorder the formatting array
k = colFormat.Count;
for (i = 0; i < k - 1; i++)
{
for (int j = i + 1; j < k; j++)
{
var mfr = colFormat[i];
var mfr2 = colFormat[j];
if (mfr2.Key < mfr.Key)
{
colFormat.RemoveAt(j);
colFormat.Insert(i, mfr2);
j--;
}
}
}
return sbT.ToString();
}
