/// <summary>
/// Get color by parsing given RGBA value color string (RGBA(255,180,90,180))
/// </summary>
/// <returns>true - valid color, false - otherwise</returns>
private static bool GetColorByRgba(string str, int idx, int length, out CssColor color)
{
int r = -1;
int g = -1;
int b = -1;
int a = -1;
if (length > 13)
{
int s = idx + 5;
r = ParseIntAtIndex(str, ref s);
if (s < idx + length)
{
g = ParseIntAtIndex(str, ref s);
}
if (s < idx + length)
{
b = ParseIntAtIndex(str, ref s);
}
if (s < idx + length)
{
a = ParseIntAtIndex(str, ref s);
}
}
if (r > -1 && g > -1 && b > -1 && a > -1)
{
color = CssColor.FromArgb(a, r, g, b);
return(true);
}
color = CssColor.Empty;
return(false);
}
/// <summary>
/// Get color by parsing given hex value color string (#A28B34).
/// </summary>
/// <returns>true - valid color, false - otherwise</returns>
private static bool GetColorByHex(string str, int idx, int length, out CssColor color)
{
int r = -1;
int g = -1;
int b = -1;
if (length == 7)
{
r = ParseHexInt(str, idx + 1, 2);
g = ParseHexInt(str, idx + 3, 2);
b = ParseHexInt(str, idx + 5, 2);
}
else if (length == 4)
{
r = ParseHexInt(str, idx + 1, 1);
r = r * 16 + r;
g = ParseHexInt(str, idx + 2, 1);
g = g * 16 + g;
b = ParseHexInt(str, idx + 3, 1);
b = b * 16 + b;
}
if (r > -1 && g > -1 && b > -1)
{
color = CssColor.FromArgb(r, g, b);
return(true);
}
color = CssColor.Empty;
return(false);
}