/// <summary>
/// translates TextSymbol enum value to unicode character
/// </summary>
/// <param name="symbol">enum representation</param>
/// <returns>unicode character</returns>
/// <remarks>refers to: http://www.decodeunicode.org/ (f.e.)</remarks>
public static string TranslateSymbol(TextSymbols symbol)
{
#region symbol matching
switch (symbol)
{
case TextSymbols.alpha:
return("α");
case TextSymbols.beta:
return("β");
case TextSymbols.gamma:
return("γ");
case TextSymbols.delta:
return("δ");
case TextSymbols.epsilon:
return("ε");
case TextSymbols.zeta:
return("ζ");
case TextSymbols.eta:
return("η");
case TextSymbols.theta:
return("θ");
case TextSymbols.vartheta:
return("\u03d1");
case TextSymbols.iota:
return("ι");
case TextSymbols.kappa:
return("κ");
case TextSymbols.lambda:
return("λ");
case TextSymbols.mu:
return("μ");
case TextSymbols.nu:
return("ν");
case TextSymbols.xi:
return("ξ");
case TextSymbols.pi:
return("π");
case TextSymbols.rho:
return("ρ");
case TextSymbols.sigma:
return("σ");
case TextSymbols.varsigma:
return("ς");
case TextSymbols.tau:
return("τ");
case TextSymbols.upsilon:
return("υ");
case TextSymbols.phi:
return("φ");
case TextSymbols.chi:
return("χ");
case TextSymbols.psi:
return("ψ");
case TextSymbols.omega:
return("ω");
case TextSymbols.Gamma:
return("Γ");
case TextSymbols.Delta:
return("Δ");
case TextSymbols.Theta:
return("Θ");
case TextSymbols.Lambda:
return("Λ");
case TextSymbols.Xi:
return("Ξ");
case TextSymbols.Pi:
return("\u03a0"); //"Π";
case TextSymbols.Sigma:
return("Σ");
case TextSymbols.Upsilon:
return("Υ");
case TextSymbols.Phi:
return("Φ");
case TextSymbols.Psi:
return("Ψ");
case TextSymbols.Omega:
return("Ω");
case TextSymbols.forall:
return("\u2200");
case TextSymbols.exists:
return("\u2203");
case TextSymbols.ni:
return("\u220b");
case TextSymbols.cong:
return("\u2205");
case TextSymbols.neq:
return("\u2260");
case TextSymbols.equiv:
return("\u2261");
case TextSymbols.approx:
return("\u2240");
case TextSymbols.aleph:
return("\u2235");
case TextSymbols.Im:
return("\u2111");
case TextSymbols.Re:
return("\u211b");
case TextSymbols.wp:
return("\u2118");
case TextSymbols.otimes:
return("\u2297");
case TextSymbols.oplus:
return("\u2295");
case TextSymbols.oslash:
return("\u2205");
case TextSymbols.cap:
return("\u22c2");
case TextSymbols.cup:
return("\u22c3");
case TextSymbols.supseteq:
return("\u2287");
case TextSymbols.supset:
return("\u2283");
case TextSymbols.subseteq:
return("\u2286");
case TextSymbols.subset:
return("\u2282");
case TextSymbols.int_:
return("\u222b");
case TextSymbols.in_:
return("\u2208");
case TextSymbols.o:
return("\u25cb");
case TextSymbols.rfloor:
return("\u230b");
case TextSymbols.lceil:
return("\u2308");
case TextSymbols.nabla:
return("\u2207");
case TextSymbols.lfloor:
return("\u230a");
case TextSymbols.cdot:
return("\u2219");
case TextSymbols.ldots:
return("\u2026");
case TextSymbols.cdots:
return("\u220f");
case TextSymbols.perp:
return("\u22a5");
case TextSymbols.neg:
return("\u2511");
case TextSymbols.prime:
return("\u2032");
case TextSymbols.wedge:
return("\u22c0");
case TextSymbols.times:
return("\u2a09");
case TextSymbols.Null:
return("\u2205");
case TextSymbols.rceil:
return("\u2309");
case TextSymbols.surd:
return("\u221a");
case TextSymbols.mid:
return("|");
case TextSymbols.vee:
return("\u22c1");
case TextSymbols.varpi:
return("\u03d6");
case TextSymbols.copyright:
return("\u00a9");
case TextSymbols.langle:
return("\u2329");
case TextSymbols.rangle:
return("\u232a");
case TextSymbols.sim:
return("\u223c");
case TextSymbols.leq:
return("\u2264");
case TextSymbols.infty:
return("\u221e");
case TextSymbols.leftrightarrow:
return("\u21d4");
case TextSymbols.leftarrow:
return("\u21d0");
case TextSymbols.uparrow:
return("\u21d1");
case TextSymbols.rightarrow:
return("\u21d2");
case TextSymbols.downarrow:
return("\u21d3");
case TextSymbols.circ:
return("\u25cc");
case TextSymbols.pm:
return("\u00b1");
case TextSymbols.geq:
return("\u2265");
case TextSymbols.propto:
return("\u221d");
case TextSymbols.partial:
return("\u2202");
case TextSymbols.div:
return("\u00f7");
default:
break;
}
return("");
#endregion
}
protected override void parseString(string expression, Font font, Point offset, Color color,
IILTextRenderer renderer, ref Size size,
ref List <ILRenderQueueItem> queue)
{
int pos = 0;
string key, itemText;
RectangleF bmpSize = new RectangleF();
int curHeigth = 0, curWidth = 0;
Bitmap itemBMP = null;
int lineHeight = 0, lineWidth = 0;
Size itemSize = Size.Empty;
while (pos < expression.Length)
{
itemText = expression.Substring(pos++, 1);
#region special position control sequences
if (itemText == "\r")
{
queue.Add(new ILRenderQueueItem(itemText, 0, 0, color));
if (curWidth < lineWidth)
{
curWidth = lineWidth;
}
lineWidth = 0;
continue;
}
else if (itemText == "\n")
{
queue.Add(new ILRenderQueueItem(itemText, 0, 0, color));
curHeigth += lineHeight;
lineHeight = 0;
if (curWidth < lineWidth)
{
curWidth = lineWidth;
}
lineWidth = 0;
continue;
#endregion
}
else if (itemText == "\\")
{
#region font control
if (pos < expression.Length - 2)
{
#region test for font control sequences: \it,\bf,\rm
if (expression[pos] == 'i' && expression[pos + 1] == 't')
{
font = new Font(font, font.Style | FontStyle.Italic);
pos += 2; continue;
}
else if (expression[pos] == 'b' && expression[pos + 1] == 'f')
{
font = new Font(font, font.Style | FontStyle.Bold);
pos += 2; continue;
}
else if (expression[pos] == 'r' && expression[pos + 1] == 'm')
{
font = new Font(font, FontStyle.Regular);
pos += 2; continue;
}
#endregion
#region fontname,-size,-color
if (parseKeyword(expression, ref pos, Keywords.Reset))
{
color = Color.Empty;
font = m_normalFont;
offset = new Point(0, 0);
continue;
}
string parameter = "";
if (parseKeywordArgumented(expression, ref pos, Keywords.Fontname, ref parameter))
{
font = new Font(parameter, font.Size, font.Style, font.Unit);
continue;
}
if (parseKeywordArgumented(expression, ref pos, Keywords.Fontsize, ref parameter))
{
int newSize;
if (!int.TryParse(parameter, out newSize))
{
continue;
}
if (parameter.StartsWith("+") && newSize > 0)
{
newSize += (int)font.Size;
if (newSize > 40)
{
newSize = 40;
}
}
else if (parameter.StartsWith("-") && -newSize < font.Size)
{
newSize = (int)font.Size + newSize;
}
if (newSize > 0 && newSize < 40)
{
offset.Y += (int)Math.Round(font.Size - newSize);
font = new Font(font.Name, newSize, font.Style, font.Unit);
}
continue;
}
if (parseKeywordArgumented(expression, ref pos, Keywords.Color, ref parameter))
{
parseColor(parameter, ref color);
continue;
}
#endregion
}
#endregion
//if (pos < expression.Length - "size".Length)
#region handle predefined symbols
TextSymbols symbol = matchSymbol(expression, ref pos);
if (symbol != TextSymbols.nothing)
{
itemText = TranslateSymbol(symbol);
if (String.IsNullOrEmpty(itemText))
{
continue;
}
}
#endregion
#region lower- upper indices
}
else if (pos < expression.Length && itemText == "_")
{
int end;
if (pos < expression.Length - 1 && expression[pos] == '{')
{
pos++;
// find end brace & remove
end = expression.IndexOf('}', pos) - 1;
if (end > 0 && end < expression.Length)
{
parseString(
expression.Substring(pos, end - pos + 1),
new Font(font.Name, font.Size * 0.7f, font.Style, font.Unit),
new Point(offset.X, offset.Y + (int)(0.3f * font.Height)),
color, renderer, ref size, ref queue);
pos = end + 2;
continue;
}
}
// cache next char only
parseString(
expression.Substring(pos++, 1),
new Font(font.Name, font.Size * 0.7f, font.Style, font.Unit),
new Point(offset.X, offset.Y + (int)(0.3f * font.Height)),
color, renderer, ref size, ref queue);
continue;
}
else if (pos < expression.Length && itemText == "^")
{
int end;
//offset.Y += 0.8f * font.Height;
if (pos < expression.Length - 1 && expression[pos] == '{')
{
pos++;
// find end brace & remove
end = expression.IndexOf('}', pos) - 1;
if (end > 0 && end < expression.Length)
{
parseString(
expression.Substring(pos, end - pos + 1),
new Font(font.Name, font.Size * 0.7f, font.Style, font.Unit),
new Point(offset.X, offset.Y - (int)(0.2f * font.Height)),
color, renderer, ref size, ref queue);
pos = end + 2;
continue;
}
}
// cache next char only
parseString(
expression.Substring(pos++, 1),
new Font(font.Name, font.Size * 0.7f, font.Style, font.Unit),
new Point(offset.X, offset.Y - (int)(0.2f * font.Height))
, color, renderer, ref size, ref queue);
continue;
#endregion
}
key = ILHashCreator.Hash(font, itemText);
if (renderer.TryGetSize(key, ref itemSize))
{
queue.Add(new ILRenderQueueItem(key, offset, color));
if (itemSize.Height > lineHeight)
{
lineHeight = itemSize.Height;
}
lineWidth += (int)itemSize.Width;
}
else
{
lock (this) {
itemBMP = transformItem(itemText, font, out bmpSize);
renderer.Cache(key, itemBMP, bmpSize);
queue.Add(new ILRenderQueueItem(key, offset, color));
// update size
if (bmpSize.Height > lineHeight)
{
lineHeight = (int)bmpSize.Height;
}
lineWidth += (int)bmpSize.Width;
}
}
}
size.Width += ((curWidth > lineWidth)?curWidth:lineWidth);
size.Height = curHeigth + lineHeight;
}
/// <summary>
/// translates TextSymbol enum value to unicode character
/// </summary>
/// <param name="symbol">enum representation</param>
/// <returns>unicode character</returns>
/// <remarks>refers to: http://www.decodeunicode.org/ (f.e.)</remarks>
public static string TranslateSymbol (TextSymbols symbol) {
#region symbol matching
switch (symbol) {
case TextSymbols.alpha:
return "α";
case TextSymbols.beta:
return "β";
case TextSymbols.gamma:
return "γ";
case TextSymbols.delta:
return "δ";
case TextSymbols.epsilon:
return "ε";
case TextSymbols.zeta:
return "ζ";
case TextSymbols.eta:
return "η";
case TextSymbols.theta:
return "θ";
case TextSymbols.vartheta:
return "\u03d1";
case TextSymbols.iota:
return "ι";
case TextSymbols.kappa:
return "κ";
case TextSymbols.lambda:
return "λ";
case TextSymbols.mu:
return "μ";
case TextSymbols.nu:
return "ν";
case TextSymbols.xi:
return "ξ";
case TextSymbols.pi:
return "π";
case TextSymbols.rho:
return "ρ";
case TextSymbols.sigma:
return "σ";
case TextSymbols.varsigma:
return "ς";
case TextSymbols.tau:
return "τ";
case TextSymbols.upsilon:
return "υ";
case TextSymbols.phi:
return "φ";
case TextSymbols.chi:
return "χ";
case TextSymbols.psi:
return "ψ";
case TextSymbols.omega:
return "ω";
case TextSymbols.Gamma:
return "Γ";
case TextSymbols.Delta:
return "Δ";
case TextSymbols.Theta:
return "Θ";
case TextSymbols.Lambda:
return "Λ";
case TextSymbols.Xi:
return "Ξ";
case TextSymbols.Pi:
return "\u03a0"; //"Π";
case TextSymbols.Sigma:
return "Σ";
case TextSymbols.Upsilon:
return "Υ";
case TextSymbols.Phi:
return "Φ";
case TextSymbols.Psi:
return "Ψ";
case TextSymbols.Omega:
return "Ω";
case TextSymbols.forall:
return "\u2200";
case TextSymbols.exists:
return "\u2203";
case TextSymbols.ni:
return "\u220b";
case TextSymbols.cong:
return "\u2205";
case TextSymbols.neq:
return "\u2260";
case TextSymbols.equiv:
return "\u2261";
case TextSymbols.approx:
return "\u2240";
case TextSymbols.aleph:
return "\u2235";
case TextSymbols.Im:
return "\u2111";
case TextSymbols.Re:
return "\u211b";
case TextSymbols.wp:
return "\u2118";
case TextSymbols.otimes:
return "\u2297";
case TextSymbols.oplus:
return "\u2295";
case TextSymbols.oslash:
return "\u2205";
case TextSymbols.cap:
return "\u22c2";
case TextSymbols.cup:
return "\u22c3";
case TextSymbols.supseteq:
return "\u2287";
case TextSymbols.supset:
return "\u2283";
case TextSymbols.subseteq:
return "\u2286";
case TextSymbols.subset:
return "\u2282";
case TextSymbols.int_:
return "\u222b";
case TextSymbols.in_:
return "\u2208";
case TextSymbols.o:
return "\u25cb";
case TextSymbols.rfloor:
return "\u230b";
case TextSymbols.lceil:
return "\u2308";
case TextSymbols.nabla:
return "\u2207";
case TextSymbols.lfloor:
return "\u230a";
case TextSymbols.cdot:
return "\u2219";
case TextSymbols.ldots:
return "\u2026";
case TextSymbols.cdots:
return "\u220f";
case TextSymbols.perp:
return "\u22a5";
case TextSymbols.neg:
return "\u2511";
case TextSymbols.prime:
return "\u2032";
case TextSymbols.wedge:
return "\u22c0";
case TextSymbols.times:
return "\u2a09";
case TextSymbols.Null:
return "\u2205";
case TextSymbols.rceil:
return "\u2309";
case TextSymbols.surd:
return "\u221a";
case TextSymbols.mid:
return "|";
case TextSymbols.vee:
return "\u22c1";
case TextSymbols.varpi:
return "\u03d6";
case TextSymbols.copyright:
return "\u00a9";
case TextSymbols.langle:
return "\u2329";
case TextSymbols.rangle:
return "\u232a";
case TextSymbols.sim:
return "\u223c";
case TextSymbols.leq:
return "\u2264";
case TextSymbols.infty:
return "\u221e";
case TextSymbols.leftrightarrow:
return "\u21d4";
case TextSymbols.leftarrow:
return "\u21d0";
case TextSymbols.uparrow:
return "\u21d1";
case TextSymbols.rightarrow:
return "\u21d2";
case TextSymbols.downarrow:
return "\u21d3";
case TextSymbols.circ:
return "\u25cc";
case TextSymbols.pm:
return "\u00b1";
case TextSymbols.geq:
return "\u2265";
case TextSymbols.propto:
return "\u221d";
case TextSymbols.partial:
return "\u2202";
case TextSymbols.div:
return "\u00f7";
default:
break;
}
return "";
#endregion
}
