private void textBoxK_TextChanged(object sender, EventArgs e)
{
if (textBoxK.Text.Length > 0)
{
if (float.Parse(textBoxK.Text) > 1)
{
textBoxK.Text = "1";
}
if (float.Parse(textBoxK.Text) < 0)
{
textBoxK.Text = "0";
}
Cmyk cmykColor = new Cmyk();
cmykColor.C = float.Parse(textBoxC.Text);
cmykColor.M = float.Parse(textBoxM.Text);
cmykColor.Y = float.Parse(textBoxY.Text);
cmykColor.K = float.Parse(textBoxK.Text);
ColorPhraser switcher = new ColorPhraser();
Color color = switcher.SwitchCmykToRgb(cmykColor);
textBoxR.Text = color.R.ToString();
textBoxG.Text = color.G.ToString();
textBoxB.Text = color.B.ToString();
draw(color);
}
}
public Color SwitchCmykToRgb(Cmyk color)
{
Color convertedColor = new Color();
int r, g, b;
//r = (int)((((float)1 - color.C) * ((float)1 - color.K)) * 255);
//g = (int)((((float)1 - color.M) * (float)(1 - color.K)) * 255);
//b = (int)((((float)1 - color.Y) * ((float)1 - color.K)) * 255);
r = (int)((1 - Math.Min(1, color.C * (1 - color.K) + color.K)) * 255);
b = (int)((1 - Math.Min(1, color.Y * (1 - color.K) + color.K)) * 255);
g = (int)((1 - Math.Min(1, color.M * (1 - color.K) + color.K)) * 255);
convertedColor = Color.FromArgb(r, g, b);
return(convertedColor);
}
public Cmyk SwitchRgbToCmyk(Color color)
{
//Black = minimum(1 - Red, 1 - Green, 1 - Blue)
//Cyan = (1 - Red - Black) / (1 - Black)
//Magenta = (1 - Green - Black) / (1 - Black)
//Yellow = (1 - Blue - Black) / (1 - Black)
float r, g, b, c, m, y, k;
r = (float)color.R / 255;
g = (float)color.G / 255;
b = (float)color.B / 255;
k = (float)Math.Round((decimal)(Math.Min(1 - r, Math.Min(1 - g, 1 - b))), 3, MidpointRounding.AwayFromZero);
if (1 - k != 0)
{
c = (float)Math.Round((decimal)((1 - (r + k)) / (1 - k)), 3, MidpointRounding.AwayFromZero);
m = (float)Math.Round((decimal)((1 - (g + k)) / (1 - k)), 3, MidpointRounding.AwayFromZero);
y = (float)Math.Round((decimal)((1 - (b + k)) / (1 - k)), 3, MidpointRounding.AwayFromZero);
}
else
{
c = 0;
m = 0;
y = 0;
}
if (c < 0)
{
c = 0;
}
if (m < 0)
{
m = 0;
}
if (y < 0)
{
y = 0;
}
Cmyk convertedColor = new Cmyk(c, m, y, k);
return(convertedColor);
}
private void textBoxR_TextChanged(object sender, EventArgs e)
{
if (textBoxR.Text.Length > 0)
{
if (int.Parse(textBoxR.Text) > 255)
{
textBoxR.Text = "255";
}
if (int.Parse(textBoxR.Text) < 0)
{
textBoxR.Text = "0";
}
Color color = Color.FromArgb(int.Parse(textBoxR.Text), int.Parse(textBoxG.Text), int.Parse(textBoxB.Text));
ColorPhraser switcher = new ColorPhraser();
Cmyk cmykColor = switcher.SwitchRgbToCmyk(color);
textBoxC.Text = cmykColor.C.ToString();
textBoxM.Text = cmykColor.M.ToString();
textBoxY.Text = cmykColor.Y.ToString();
textBoxK.Text = cmykColor.K.ToString();
draw(color);
}
}
