static void Main(string[] args)
{
System.Drawing.Color c1 = System.Drawing.Color.FromName("Blue");
Console.Write("c1.ToString() = ");
Console.WriteLine(c1.ToString());
object o1 = c1;
System.Drawing.Color c3 = (System.Drawing.Color)o1;
Console.Write("((System.Drawing.Color)(object)c1).ToString() = ");
Console.WriteLine(c3.ToString());
int n = c1.ToArgb();
Console.Write("c1.ToArgb() = ");
Console.WriteLine(n);
uint n1 = (uint)n;
Console.Write("(uint)c1.ToArgb() = ");
Console.WriteLine(n1);
Energy.Base.Color x = (Energy.Base.Color)(uint) c1.ToArgb();
var html = x.ToString();
Console.Write("(string)(Energy.Base.Color) = ");
Console.WriteLine(html);
Energy.Base.Color x1 = new Energy.Base.Color((uint)c1.ToArgb());
var html1 = x1.ToString();
Console.Write("new Energy.Base.Color((uint)c.ToArgb()) = ");
Console.WriteLine(html1);
Console.ReadLine();
}
/// <summary>
/// Represent color as HTML value
/// </summary>
/// <param name="color">Color</param>
/// <returns>CSS string</returns>
public static string ColorToHtml(Energy.Base.Color color)
{
byte[] rgb = new byte[3] {
color.R, color.G, color.B
};
return("#" + Hex.ArrayToHex(rgb).ToLower());
}
/// <summary>
/// Color transition
/// </summary>
/// <param name="color_1">System.Drawing.Color</param>
/// <param name="color_2">System.Drawing.Color</param>
/// <param name="percentage">double</param>
/// <returns>System.Drawing.Color</returns>
public static Energy.Base.Color ColorTransition(Energy.Base.Color color_1, Energy.Base.Color color_2, double percentage)
{
byte a, r, g, b;
if (percentage == 0)
{
return(color_1);
}
if (percentage < 0)
{
Energy.Base.Color c = color_1;
color_1 = color_2;
color_2 = c;
percentage = -percentage;
}
if (percentage > 1)
{
percentage = percentage / 100;
}
if (percentage > 1)
{
percentage = 1;
}
a = (byte)((int)(double)(percentage * color_1.A + (1 - percentage) * color_2.A) % 0x100);
r = (byte)((int)(double)(percentage * color_1.R + (1 - percentage) * color_2.R) % 0x100);
g = (byte)((int)(double)(percentage * color_1.G + (1 - percentage) * color_2.G) % 0x100);
b = (byte)((int)(double)(percentage * color_1.B + (1 - percentage) * color_2.B) % 0x100);
return(new Color(a, r, g, b));
}
public void ColorToString()
{
Energy.Base.Color c1 = "#333";
string s1 = (string)c1;
Debug.WriteLine(s1);
Assert.AreEqual("#333333", s1);
Energy.Base.Color c2 = "#ccc";
string s2 = (string)c2;
Debug.WriteLine(s2);
Assert.AreEqual("#cccccc", s2);
Energy.Base.Color c3 = Energy.Base.Color.ColorTransition(c1, c2, 0.5);
string s3 = (string)c3;
Debug.WriteLine(s3);
Assert.AreEqual("#7f7f7f", s3);
}
