public override bool Equals(object obj)
{
bool equal = false;
if (obj is HSB)
{
HSB hsb = ( HSB )obj;
if (this.Hue == hsb.Hue && this.Saturation == hsb.Saturation && this.Brightness == hsb.Brightness)
{
equal = true;
}
}
return(equal);
}
/// <summary>
/// Updates the color slider.
/// </summary>
private void UpdateColorSlider()
{
RGB rgb = ( RGB )this.rgbColorSpace.Structure;
HSB hsb = ( HSB )this.hsbColorSpace.Structure;
Rectangle region = new Rectangle(0, -1, 18, 257);
using (Graphics g = Graphics.FromImage(m_colorSliderBitmap)) {
if (this.m_currentColorSpace is RgbColorSpace)
{
char dChar = this.m_currentColorSpace.SelectedComponent.DisplayCharacter;
int red = rgb.Red;
int green = rgb.Green;
int blue = rgb.Blue;
Color startColor;
Color endColor;
switch (dChar)
{
case 'R':
startColor = Color.FromArgb(0, green, blue);
endColor = Color.FromArgb(255, green, blue);
break;
case 'G':
startColor = Color.FromArgb(red, 0, blue);
endColor = Color.FromArgb(red, 255, blue);
break;
default:
startColor = Color.FromArgb(red, green, 0);
endColor = Color.FromArgb(red, green, 255);
break;
}
using (LinearGradientBrush lgb = new LinearGradientBrush(region, startColor, endColor, 270f)) {
g.FillRectangle(lgb, region);
}
}
else if (this.m_currentColorSpace is HsbColorSpace)
{
if (this.m_currentColorSpace.SelectedComponent.DisplayCharacter == 'H')
{
Rectangle rect = new Rectangle(0, 0, 20, 256);
using (LinearGradientBrush brBrush = new LinearGradientBrush(rect, Color.Blue, Color.Red, 90f, false)) {
Color[] colorArray = { Color.Red, Color.Magenta, Color.Blue, Color.Cyan, Color.FromArgb(0, 255, 0), Color.Yellow, Color.Red };
float[] posArray = { 0.0f, 0.1667f, 0.3372f, 0.502f, 0.6686f, 0.8313f, 1.0f };
ColorBlend colorBlend = new ColorBlend();
colorBlend.Colors = colorArray;
colorBlend.Positions = posArray;
brBrush.InterpolationColors = colorBlend;
g.FillRectangle(brBrush, region);
}
}
else if (this.m_currentColorSpace.SelectedComponent.DisplayCharacter == 'B')
{
RGB sRgb = ColorConverter.HsbToRgb(new HSB(hsb.Hue, hsb.Saturation, 100));
RGB eRgb = ColorConverter.HsbToRgb(new HSB(hsb.Hue, hsb.Saturation, 0));
using (LinearGradientBrush lgb = new LinearGradientBrush(region, Color.FromArgb(sRgb.Red, sRgb.Green, sRgb.Blue), Color.FromArgb(eRgb.Red, eRgb.Green, eRgb.Blue), 90f)) {
g.FillRectangle(lgb, region);
}
}
else
{
RGB sRgb = ColorConverter.HsbToRgb(new HSB(hsb.Hue, 100, hsb.Brightness));
RGB eRgb = ColorConverter.HsbToRgb(new HSB(hsb.Hue, 0, hsb.Brightness));
using (LinearGradientBrush lgb = new LinearGradientBrush(region, Color.FromArgb(sRgb.Red, sRgb.Green, sRgb.Blue), Color.FromArgb(eRgb.Red, eRgb.Green, eRgb.Blue), 90f)) {
g.FillRectangle(lgb, region);
}
}
}
}
this.picColorSlider.Image = m_colorSliderBitmap;
}
private Color CalculateSelectedColor(Point p)
{
IColorSpaceStructure selectedColor = null;
if (m_colorSpace is HsbColorSpace)
{
HSB hsb = ( HSB )m_colorSpace.Structure;
if (m_component == 'H')
{
int brightness = ( int )((( double )255 - p.Y) / 2.55);
int saturation = ( int )(( double )p.X / 2.55);
selectedColor = new HSB(hsb.Hue, saturation, brightness);
}
else if (m_component == 'S')
{
int hue = ( int )(p.X * (( double )360 / 255));
int brightness = ( int )((( double )255 - p.Y) / 2.55);
if (hue == 360)
{
hue = 0;
}
selectedColor = new HSB(hue, hsb.Saturation, brightness);
}
else if (m_component == 'B')
{
int hue = ( int )(p.X * (( double )360 / 255));
int saturation = ( int )((( double )255 - p.Y) / 2.55);
if (hue == 360)
{
hue = 0;
}
selectedColor = new HSB(hue, saturation, hsb.Brightness);
}
}
else if (m_colorSpace is RgbColorSpace)
{
RGB rgb = ( RGB )m_colorSpace.Structure;
if (m_component == 'R')
{
selectedColor = new RGB(rgb.Red, 255 - p.Y, p.X);
}
else if (m_component == 'G')
{
selectedColor = new RGB(255 - p.Y, rgb.Green, p.X);
}
else if (m_component == 'B')
{
selectedColor = new RGB(p.X, 255 - p.Y, rgb.Blue);
}
}
RGB crgb;
HSB hsbSelectedColor;
if ((hsbSelectedColor = selectedColor as HSB) != null)
{
crgb = ColorConverter.HsbToRgb(hsbSelectedColor);
}
else
{
crgb = ( RGB )selectedColor;
}
return(ColorConverter.RgbToColor(crgb));
}
private void UpdateCurrentColorBitmap(bool resetPreviouslyPickedPoint)
{
if (!m_isMouseDown)
{
int x = 0;
int y = 0;
if (m_currentColorBitmap != null)
{
m_currentColorBitmap.Dispose();
}
if (m_colorSpace is HsbColorSpace)
{
HSB hsb = ( HSB )m_colorSpace.Structure;
if (m_component == 'H')
{
Color c = m_color;
if (c.Equals(Color.FromArgb(0, 0, 0, 0)) | c.Equals(Color.FromArgb(0, 0, 0)))
{
c = Color.FromArgb(255, 0, 0);
}
m_currentColorBitmap = ColorRenderingHelper.GetHueColorField(c);
x = ( int )Math.Round(hsb.Saturation * 2.55);
y = 255 - ( int )Math.Round(hsb.Brightness * 2.55);
}
else if (m_component == 'S')
{
m_currentColorBitmap = ColorRenderingHelper.GetSaturationColorField(m_selectedComponentValue);
x = ( int )Math.Ceiling(hsb.Hue * (( double )255 / 360));
y = ( int )(255 - (hsb.Brightness * 2.55));
}
else if (m_component == 'B')
{
m_currentColorBitmap = ColorRenderingHelper.GetBrightnessColorField(m_selectedComponentValue);
x = ( int )Math.Ceiling(hsb.Hue * (( double )255 / 360));
y = 255 - ( int )Math.Round(hsb.Saturation * 2.55);
}
}
else if (m_colorSpace is RgbColorSpace)
{
Color c = (( RgbColorSpace )m_colorSpace).GetColor();
if (m_component == 'R')
{
m_currentColorBitmap = ColorRenderingHelper.GetRedColorField(m_selectedComponentValue);
x = c.B;
y = 255 - c.G;
}
else if (m_component == 'G')
{
m_currentColorBitmap = ColorRenderingHelper.GetGreenColorField(m_selectedComponentValue);
x = c.B;
y = 255 - c.R;
}
else if (m_component == 'B')
{
m_currentColorBitmap = ColorRenderingHelper.GetBlueColorField(m_selectedComponentValue);
x = c.R;
y = 255 - c.G;
}
}
if (resetPreviouslyPickedPoint)
{
m_currentPoint = new Point(x, y);
}
}
}
} // RgbToHsb
/// <summary>
/// Converts HSB to RGB.
/// </summary>
/// <param name="rgb">A HSB object containing the HSB values that are to
/// be converted to RGB values.</param>
/// <returns>A RGB equivalent.</returns>
internal static RGB HsbToRgb(HSB hsb)
{
double h, s, b;
double red = 0, green = 0, blue = 0;
h = hsb.Hue;
s = (( double )hsb.Saturation) / 100;
b = (( double )hsb.Brightness) / 100;
if (s == 0)
{
red = b;
green = b;
blue = b;
}
else
{
double p, q, t;
// the color wheel has six sectors.
double fractionalSector;
int sectorNumber;
double sectorPosition;
sectorPosition = h / 60;
sectorNumber = ( int )Math.Floor(sectorPosition);
fractionalSector = sectorPosition - sectorNumber;
p = b * (1 - s);
q = b * (1 - (s * fractionalSector));
t = b * (1 - (s * (1 - fractionalSector)));
// Assign the fractional colors to r, g, and b
// based on the sector the angle is in.
switch (sectorNumber)
{
case 0:
red = b;
green = t;
blue = p;
break;
case 1:
red = q;
green = b;
blue = p;
break;
case 2:
red = p;
green = b;
blue = t;
break;
case 3:
red = p;
green = q;
blue = b;
break;
case 4:
red = t;
green = p;
blue = b;
break;
case 5:
red = b;
green = p;
blue = q;
break;
}
}
int nRed, nGreen, nBlue;
nRed = ( int )Math.Round(red * 255);
nGreen = ( int )Math.Round(green * 255);
nBlue = ( int )Math.Round(blue * 255);
return(new RGB(nRed, nGreen, nBlue));
} // HsbToRgb
private Color CalculateSelectedColor( Point p )
{
IColorSpaceStructure selectedColor = null;
if ( m_colorSpace is HsbColorSpace ) {
HSB hsb = ( HSB ) m_colorSpace.Structure;
if ( m_component == 'H' ) {
int brightness = ( int ) ( ( ( double ) 255 - p.Y ) / 2.55 );
int saturation = ( int ) ( ( double ) p.X / 2.55 );
selectedColor = new HSB( hsb.Hue, saturation, brightness );
} else if ( m_component == 'S' ) {
int hue = ( int ) ( p.X * ( ( double ) 360 / 255 ) );
int brightness = ( int ) ( ( ( double ) 255 - p.Y ) / 2.55 );
if ( hue == 360 ) {
hue = 0;
}
selectedColor = new HSB( hue, hsb.Saturation, brightness );
} else if ( m_component == 'B' ) {
int hue = ( int ) ( p.X * ( ( double ) 360 / 255 ) );
int saturation = ( int ) ( ( ( double ) 255 - p.Y ) / 2.55 );
if ( hue == 360 ) {
hue = 0;
}
selectedColor = new HSB( hue, saturation, hsb.Brightness );
}
} else if ( m_colorSpace is RgbColorSpace ) {
RGB rgb = ( RGB ) m_colorSpace.Structure;
if ( m_component == 'R' ) {
selectedColor = new RGB( rgb.Red, 255 - p.Y, p.X );
} else if ( m_component == 'G' ) {
selectedColor = new RGB( 255 - p.Y, rgb.Green, p.X );
} else if ( m_component == 'B' ) {
selectedColor = new RGB( p.X, 255 - p.Y, rgb.Blue);
}
}
RGB crgb;
HSB hsbSelectedColor;
if ( ( hsbSelectedColor = selectedColor as HSB ) != null ) {
crgb = ColorConverter.HsbToRgb( hsbSelectedColor );
} else {
crgb = ( RGB ) selectedColor;
}
return ColorConverter.RgbToColor( crgb );
}
/// <summary>
/// Converts HSB to RGB.
/// </summary>
/// <param name="rgb">A HSB object containing the HSB values that are to
/// be converted to RGB values.</param>
/// <returns>A RGB equivalent.</returns>
internal static RGB HsbToRgb( HSB hsb )
{
double h, s, b;
double red = 0, green = 0, blue = 0;
h = hsb.Hue;
s = ( ( double ) hsb.Saturation ) / 100;
b = ( ( double ) hsb.Brightness ) / 100;
if ( s == 0 ) {
red = b;
green = b;
blue = b;
} else {
double p, q, t;
// the color wheel has six sectors.
double fractionalSector;
int sectorNumber;
double sectorPosition;
sectorPosition = h / 60;
sectorNumber = ( int ) Math.Floor( sectorPosition );
fractionalSector = sectorPosition - sectorNumber;
p = b * ( 1 - s );
q = b * ( 1 - ( s * fractionalSector ) );
t = b * ( 1 - ( s * ( 1 - fractionalSector ) ) );
// Assign the fractional colors to r, g, and b
// based on the sector the angle is in.
switch (sectorNumber) {
case 0:
red = b;
green = t;
blue = p;
break;
case 1:
red = q;
green = b;
blue = p;
break;
case 2:
red = p;
green = b;
blue = t;
break;
case 3:
red = p;
green = q;
blue = b;
break;
case 4:
red = t;
green = p;
blue = b;
break;
case 5:
red = b;
green = p;
blue = q;
break;
}
}
int nRed, nGreen, nBlue;
nRed = ( int ) Math.Round( red * 255 );
nGreen = ( int ) Math.Round( green * 255 );
nBlue = ( int ) Math.Round( blue * 255 );
return new RGB( nRed, nGreen, nBlue );
}
