/// <summary>
/// Update the selected color to the preview box.
/// </summary>
private void UpdateColor()
{
ColorHSB selectedHSB = new ColorHSB(colorHSB.Hue, colorHSB.Saturation, colorHSB.Brightness);
selectedColor = ColorHSB.HSBtoRGB(selectedHSB);
ColorPreviewBox.Background = GetBrush();
}
/// <summary>
/// Update the color hue and saturation from the position of the color picker.
/// </summary>
private void UpdateColorPicker()
{
colorHSB.Hue = ((Canvas.GetLeft(ColorPickPointer) - Canvas.GetLeft(ColorMapImage)) / 255) * 360;
colorHSB.Saturation = 1 - ((Canvas.GetTop(ColorPickPointer) - Canvas.GetTop(ColorMapImage)) / 255);
ColorHSB gradientHSB = new ColorHSB(colorHSB.Hue, colorHSB.Saturation, 1);
UpdateGradient(ColorHSB.HSBtoRGB(gradientHSB));
}
/// <summary>
/// Load the pre-selected color into all controls.
/// </summary>
/// <param name="color">The color to load.</param>
public void LoadColor(Color color)
{
colorHSB = ColorHSB.RGBtoHSB(color);
Canvas.SetLeft(ColorPickPointer, Canvas.GetLeft(ColorMapImage) + (colorHSB.Hue / 360) * 256);
Canvas.SetTop(ColorPickPointer, Canvas.GetTop(ColorMapImage) + (256 - colorHSB.Saturation * 256));
Canvas.SetTop(GradientPointer, Canvas.GetTop(GradientRectangle) + (256 - colorHSB.Brightness * 256));
ConstraintColorPickPointer();
ConstraintGradientPointer();
UpdateGradient(color);
UpdateColor();
UpdateInfo();
}
/// <summary>
/// Load the pre-selected color into all controls.
/// </summary>
/// <param name="color">The color to load.</param>
public void LoadColor(Color color)
{
colorHSB = ColorHSB.RGBtoHSB(color);
Canvas.SetLeft(ColorPickPointer, Canvas.GetLeft(ColorMapImage) + (colorHSB.Hue / 360) * 256);
Canvas.SetTop(ColorPickPointer, Canvas.GetTop(ColorMapImage) + (256 - colorHSB.Saturation * 256));
Canvas.SetTop(GradientPointer, Canvas.GetTop(GradientRectangle) + (256 - colorHSB.Brightness * 256));
ConstraintColorPickPointer();
ConstraintGradientPointer();
UpdateGradient(color);
UpdateColor();
UpdateInfo();
}
/// <summary>
/// Update the color hue and saturation from the position of the color picker.
/// </summary>
private void UpdateColorPicker()
{
colorHSB.Hue = ((Canvas.GetLeft(ColorPickPointer) - Canvas.GetLeft(ColorMapImage)) / 255) * 360;
colorHSB.Saturation = 1 - ((Canvas.GetTop(ColorPickPointer) - Canvas.GetTop(ColorMapImage)) / 255);
ColorHSB gradientHSB = new ColorHSB(colorHSB.Hue, colorHSB.Saturation, 1);
UpdateGradient(ColorHSB.HSBtoRGB(gradientHSB));
}
/// <summary>
/// Update the selected color to the preview box.
/// </summary>
private void UpdateColor()
{
ColorHSB selectedHSB = new ColorHSB(colorHSB.Hue, colorHSB.Saturation, colorHSB.Brightness);
selectedColor = ColorHSB.HSBtoRGB(selectedHSB);
ColorPreviewBox.Background = GetBrush();
}
/// <summary>
/// Converts HSB color to RGB color.
/// </summary>
/// <param name="colorHSB">HSB Color</param>
/// <returns>RGB color</returns>
public static Color HSBtoRGB(ColorHSB colorHSB)
{
double hue = colorHSB.hue;
double saturation = colorHSB.saturation;
double brightness = colorHSB.brightness;
double R = 0;
double G = 0;
double B = 0;
if (saturation == 0)
{
R = G = B = brightness;
}
else
{
// Calculate the color sector.
double sectorPos = hue / 60.0;
int sectorNumber = (int)(Math.Floor(sectorPos));
// Get the fractional.
double fractionalSector = sectorPos - sectorNumber;
// Calculate the three axes of color.
double p = brightness * (1.0 - saturation);
double q = brightness * (1.0 - (saturation * fractionalSector));
double t = brightness * (1.0 - (saturation * (1 - fractionalSector)));
// Assign fractional colors to RGB based on the sector the angle.
switch (sectorNumber)
{
case 0:
R = brightness;
G = t;
B = p;
break;
case 1:
R = q;
G = brightness;
B = p;
break;
case 2:
R = p;
G = brightness;
B = t;
break;
case 3:
R = p;
G = q;
B = brightness;
break;
case 4:
R = t;
G = p;
B = brightness;
break;
case 5:
R = brightness;
G = p;
B = q;
break;
}
}
Color color = Color.FromRgb((byte)Double.Parse(String.Format("{0:0.00}", R * 255.0)), (byte)Double.Parse(String.Format("{0:0.00}", G * 255.0)), (byte)Double.Parse(String.Format("{0:0.00}", B * 255.0)));
return color;
}
/// <summary>
/// Converts HSB color to RGB color.
/// </summary>
/// <param name="colorHSB">HSB Color</param>
/// <returns>RGB color</returns>
public static Color HSBtoRGB(ColorHSB colorHSB)
{
double hue = colorHSB.hue;
double saturation = colorHSB.saturation;
double brightness = colorHSB.brightness;
double R = 0;
double G = 0;
double B = 0;
if (saturation == 0)
{
R = G = B = brightness;
}
else
{
// Calculate the color sector.
double sectorPos = hue / 60.0;
int sectorNumber = (int)(Math.Floor(sectorPos));
// Get the fractional.
double fractionalSector = sectorPos - sectorNumber;
// Calculate the three axes of color.
double p = brightness * (1.0 - saturation);
double q = brightness * (1.0 - (saturation * fractionalSector));
double t = brightness * (1.0 - (saturation * (1 - fractionalSector)));
// Assign fractional colors to RGB based on the sector the angle.
switch (sectorNumber)
{
case 0:
R = brightness;
G = t;
B = p;
break;
case 1:
R = q;
G = brightness;
B = p;
break;
case 2:
R = p;
G = brightness;
B = t;
break;
case 3:
R = p;
G = q;
B = brightness;
break;
case 4:
R = t;
G = p;
B = brightness;
break;
case 5:
R = brightness;
G = p;
B = q;
break;
}
}
Color color = Color.FromRgb((byte)Double.Parse(String.Format("{0:0.00}", R * 255.0)), (byte)Double.Parse(String.Format("{0:0.00}", G * 255.0)), (byte)Double.Parse(String.Format("{0:0.00}", B * 255.0)));
return(color);
}
