public AdobeVerticalColourSlider()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
// Initialize Colors
_hsb = new AdobeColours.HSB();
_hsb.H = 1.0;
_hsb.S = 1.0;
_hsb.B = 1.0;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
_baseColourComponent = ColourComponent.HUE;
}
private void ResetHSLRGB()
{
int red,
green,
blue;
switch (_baseColourComponent)
{
case ColourComponent.HUE:
_hsb.S = _markerX / 255.0;
_hsb.B = 1.0 - _markerY / 255.0;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
break;
case ColourComponent.SATURATION:
_hsb.H = _markerX / 255.0;
_hsb.B = 1.0 - _markerY / 255.0;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
break;
case ColourComponent.BRIGHTESS:
_hsb.H = _markerX / 255.0;
_hsb.S = 1.0 - _markerY / 255.0;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
break;
case ColourComponent.RED:
blue = _markerX;
green = 255 - _markerY;
_rgb = Color.FromArgb(_rgb.R, green, blue);
_hsb = AdobeColours.RGB_to_HSB(_rgb);
break;
case ColourComponent.GREEN:
blue = _markerX;
red = 255 - _markerY;
_rgb = Color.FromArgb(red, _rgb.G, blue);
_hsb = AdobeColours.RGB_to_HSB(_rgb);
break;
case ColourComponent.BLUE:
red = _markerX;
green = 255 - _markerY;
_rgb = Color.FromArgb(red, green, _rgb.B);
_hsb = AdobeColours.RGB_to_HSB(_rgb);
break;
}
}
private void DrawMarker(int x, int y, bool force)
{
x = x.LimitInRange(0, 255);
y = y.LimitInRange(0, 255);
if (_markerY == y && _markerX == x && !force)
{
return;
}
ClearMarker();
_markerX = x;
_markerY = y;
Graphics g = this.CreateGraphics();
// The selected color determines the color of the marker drawn over
// it (black or white)
Pen pen;
AdobeColours.HSB _hsl = GetColour(x, y);
if (_hsl.B < (double)200 / 255)
{
pen = new Pen(Color.White); // White marker if selected color is dark
}
else if (_hsl.H < (double)26 / 360 || _hsl.H > (double)200 / 360)
{
if (_hsl.S > (double)70 / 255)
{
pen = new Pen(Color.White);
}
else
{
pen = new Pen(Color.Black); // Else use a black marker for lighter colors
}
}
else
{
pen = new Pen(Color.Black);
}
g.DrawEllipse(pen, x - 3, y - 3, 10, 10); // Draw the marker : 11 x 11 circle
DrawBorder(); // Force the border to be redrawn, just in case the marker has been drawn over it.
}
private AdobeColours.HSB GetColour(int x, int y)
{
AdobeColours.HSB _hsb = new AdobeColours.HSB();
switch (_baseColourComponent)
{
case ColourComponent.HUE:
_hsb.H = _hsb.H;
_hsb.S = x / 255.0;
_hsb.B = 1.0 - y / 255.0;
break;
case ColourComponent.SATURATION:
_hsb.S = _hsb.S;
_hsb.H = x / 255.0;
_hsb.B = 1.0 - (double)y / 255;
break;
case ColourComponent.BRIGHTESS:
_hsb.B = _hsb.B;
_hsb.H = x / 255.0;
_hsb.S = 1.0 - (double)y / 255;
break;
case ColourComponent.RED:
_hsb = AdobeColours.RGB_to_HSB(Color.FromArgb(_rgb.R, 255 - y, x));
break;
case ColourComponent.GREEN:
_hsb = AdobeColours.RGB_to_HSB(Color.FromArgb(255 - y, _rgb.G, x));
break;
case ColourComponent.BLUE:
_hsb = AdobeColours.RGB_to_HSB(Color.FromArgb(x, 255 - y, _rgb.B));
break;
}
return(_hsb);
}
/// <summary>
/// Resets the controls colour (both HSL and RGB variables) based on the current slider position
/// </summary>
private void ResetHSLRGB()
{
int height = this.Height - 9;
switch (_baseColourComponent)
{
case ColourComponent.HUE:
_hsb.H = 1.0 - (double)_markerStartY / height;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
break;
case ColourComponent.SATURATION:
_hsb.S = 1.0 - (double)_markerStartY / height;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
break;
case ColourComponent.BRIGHTESS:
_hsb.B = 1.0 - (double)_markerStartY / height;
_rgb = AdobeColours.HSB_to_RGB(_hsb);
break;
case ColourComponent.RED:
_rgb = Color.FromArgb(255 - (int)Math.Round(255 * (double)_markerStartY / height), _rgb.G, _rgb.B);
_hsb = AdobeColours.RGB_to_HSB(_rgb);
break;
case ColourComponent.GREEN:
_rgb = Color.FromArgb(_rgb.R, 255 - (int)Math.Round(255 * (double)_markerStartY / height), _rgb.B);
_hsb = AdobeColours.RGB_to_HSB(_rgb);
break;
case ColourComponent.BLUE:
_rgb = Color.FromArgb(_rgb.R, _rgb.G, 255 - (int)Math.Round(255 * (double)_markerStartY / height));
_hsb = AdobeColours.RGB_to_HSB(_rgb);
break;
}
}