/// <summary>
/// Gets the inverted HSB color.
/// </summary>
/// <param name="input">The color to invert.</param>
/// <returns>An inverted HSB struct.</returns>
public static HSB GetInverted(HSB input)
{
float hue = input.Hue;
if (hue < 0.5f)
{
hue += 0.5f;
}
else
{
hue -= 0.5f;
}
return(new HSB(hue * 360, input.Saturation100, input.Brightness100, input.A));
}
protected override void DrawHSBHue()
{
using (Graphics g = Graphics.FromImage(bmp))
{
HSB color = new HSB(0f, 100, 100, SelectedColor.ARGB.A);
for (int y = 0; y < clientHeight; y++)
{
color.Hue = (float)(1.0 - ((double)y / clientHeight));
using (Pen pen = new Pen(color))
{
g.DrawLine(pen, 0, y, clientWidth, y);
}
}
}
}
// slider controls brightness
// x = hue 0 -> 360
// y = saturation 100 -> 0
protected override void DrawHSBBrightness()
{
using (Graphics g = Graphics.FromImage(bmp))
{
HSB start = new HSB(0, 100, (int)selectedColor.HSB.Brightness100, selectedColor.ARGB.A);
HSB end = new HSB(0, 0, (int)selectedColor.HSB.Brightness100, selectedColor.ARGB.A);
for (int x = 0; x < clientWidth; x++)
{
start.Hue = end.Hue = (float)((double)x / (clientHeight));
using (LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, 1, clientHeight), start, end, LinearGradientMode.Vertical))
{
g.FillRectangle(brush, new Rectangle(x, 0, 1, clientHeight));
}
}
}
}
// slider controls hue
// x = saturation 0 -> 100
// y = brightness 100 -> 0
protected override void DrawHSBHue()
{
using (Graphics g = Graphics.FromImage(bmp))
{
HSB start = new HSB((int)selectedColor.HSB.Hue360, 0, 0, selectedColor.ARGB.A);
HSB end = new HSB((int)selectedColor.HSB.Hue360, 100, 0, selectedColor.ARGB.A);
for (int y = 0; y < clientHeight; y++)
{
start.Brightness = end.Brightness = (float)(1.0 - ((double)y / (clientHeight)));
using (LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, clientWidth, 1), start, end, LinearGradientMode.Horizontal))
{
g.FillRectangle(brush, new Rectangle(0, y, clientWidth, 1));
}
}
}
}
/// <summary>
/// Inverts the current color.
/// </summary>
/// <returns>The inverted color.</returns>
public HSB GetInverted()
{
return(HSB.GetInverted(this));
}
/// <summary>
/// Convert the current color to a HSB color.
/// </summary>
/// <returns>An HSB representation of this color.</returns>
public HSB ToHSB()
{
return(HSB.FromARGB(A, R, G, B));
}