public ColorWheel()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
//wheelRegion = new PdnRegion();
hsvColor = new HsvColor(0, 0, 0);
}
public static RgbColor FromHsv(HsvColor hsv)
{
return hsv.ToRgb();
}
private Color[] GetColors()
{
Color[] colors = new Color[colorTesselation];
for (int i = 0; i < colorTesselation; i++)
{
int hue = (i * 360) / colorTesselation;
colors[i] = new HsvColor(hue, 100, 100).ToColor();
}
return colors;
}
private void GrabColor(Point mouseXY)
{
// center our coordinate system so the middle is (0,0), and positive Y is facing up
int cx = mouseXY.X - (Width / 2);
int cy = mouseXY.Y - (Height / 2);
double theta = Math.Atan2(cy, cx);
if (theta < 0)
{
theta += 2 * Math.PI;
}
double alpha = Math.Sqrt((cx * cx) + (cy * cy));
int h = (int)((theta / (Math.PI * 2)) * 360.0);
int s = (int)Math.Min(100.0, (alpha / (double)(Width / 2)) * 100);
int v = 100;
hsvColor = new HsvColor(h, s, v);
OnColorChanged();
Invalidate(true);
}
/// <summary>
/// Whenever a color is changed via HSV methods, call this and the RGB
/// counterparts will be sync'd up.
/// </summary>
/// <param name="newColor">The HSV color that should be converted to RGB.</param>
private void SyncRgbFromHsv(HsvColor newColor)
{
if (ignore == 0)
{
ignore++;
RgbColor rgbColor = newColor.ToRgb();
Utility.SetNumericUpDownValue(redUpDown, rgbColor.Red);
Utility.SetNumericUpDownValue(greenUpDown, rgbColor.Green);
Utility.SetNumericUpDownValue(blueUpDown, rgbColor.Blue);
string hexText = GetHexNumericUpDownValue(rgbColor.Red, rgbColor.Green, rgbColor.Blue);
hexBox.Text = hexText;
SetColorGradientValuesRgb(rgbColor.Red, rgbColor.Green, rgbColor.Blue);
SetColorGradientMinMaxColorsRgb(rgbColor.Red, rgbColor.Green, rgbColor.Blue);
SetColorGradientMinMaxColorsAlpha((int)alphaUpDown.Value);
ignore--;
}
}
private void UpDown_ValueChanged(object sender, System.EventArgs e)
{
if (sender == alphaUpDown || sender == alphaGradientControl)
{
if (sender == alphaGradientControl)
{
if (alphaUpDown.Value != (decimal)alphaGradientControl.Value)
{
alphaUpDown.Value = (decimal)alphaGradientControl.Value;
}
}
else
{
if (alphaGradientControl.Value != (int)alphaUpDown.Value)
{
alphaGradientControl.Value = (int)alphaUpDown.Value;
}
}
PushIgnoreChangedEvents();
switch (WhichUserColor)
{
case WhichUserColor.Primary:
ColorBgra newPrimaryColor = ColorBgra.FromBgra(lastPrimaryColor.B, lastPrimaryColor.G, lastPrimaryColor.R, (byte)alphaGradientControl.Value);
this.userPrimaryColor = newPrimaryColor;
OnUserPrimaryColorChanged(newPrimaryColor);
break;
case WhichUserColor.Secondary:
ColorBgra newSecondaryColor = ColorBgra.FromBgra(lastSecondaryColor.B, lastSecondaryColor.G, lastSecondaryColor.R, (byte)alphaGradientControl.Value);
this.userSecondaryColor = newSecondaryColor;
OnUserSecondaryColorChanged(newSecondaryColor);
break;
default:
throw new InvalidEnumArgumentException("WhichUserColor property");
}
PopIgnoreChangedEvents();
Update();
}
else if (IgnoreChangedEvents)
{
return;
}
else
{
PushIgnoreChangedEvents();
if (sender == redUpDown || sender == greenUpDown || sender == blueUpDown)
{
string hexText = GetHexNumericUpDownValue((int)redUpDown.Value, (int)greenUpDown.Value, (int)blueUpDown.Value);
hexBox.Text = hexText;
ColorBgra rgbColor = ColorBgra.FromBgra((byte)blueUpDown.Value, (byte)greenUpDown.Value, (byte)redUpDown.Value, (byte)alphaUpDown.Value);
SetColorGradientMinMaxColorsRgb(rgbColor.R, rgbColor.G, rgbColor.B);
SetColorGradientMinMaxColorsAlpha(rgbColor.A);
SetColorGradientValuesRgb(rgbColor.R, rgbColor.G, rgbColor.B);
SetColorGradientMinMaxColorsAlpha(rgbColor.A);
SyncHsvFromRgb(rgbColor);
OnUserColorChanged(rgbColor);
}
else if (sender == hexBox)
{
int hexInt = 0;
if (hexBox.Text.Length > 0)
{
try
{
hexInt = int.Parse(hexBox.Text,System.Globalization.NumberStyles.HexNumber);
}
// Needs to be changed so it reads what the RGB values were last
catch (FormatException)
{
hexInt = 0;
hexBox.Text = "";
}
catch (OverflowException)
{
hexInt = 16777215;
hexBox.Text = "FFFFFF";
}
if (!((hexInt <= 16777215) && (hexInt >= 0)))
{
hexInt = 16777215;
hexBox.Text = "FFFFFF";
}
}
int newRed = ((hexInt & 0xff0000) >> 16);
int newGreen = ((hexInt & 0x00ff00) >> 8);
int newBlue = (hexInt & 0x0000ff);
Utility.SetNumericUpDownValue(redUpDown, newRed);
Utility.SetNumericUpDownValue(greenUpDown, newGreen);
Utility.SetNumericUpDownValue(blueUpDown, newBlue);
SetColorGradientMinMaxColorsRgb(newRed, newGreen, newBlue);
SetColorGradientValuesRgb(newRed, newGreen, newBlue);
SetColorGradientMinMaxColorsAlpha((int)alphaUpDown.Value);
ColorBgra rgbColor = ColorBgra.FromBgra((byte)newBlue, (byte)newGreen, (byte)newRed, (byte)alphaUpDown.Value);
SyncHsvFromRgb(rgbColor);
OnUserColorChanged(rgbColor);
}
else if (sender == hueUpDown || sender == saturationUpDown || sender == valueUpDown)
{
HsvColor oldHsvColor = colorWheel.HsvColor;
HsvColor newHsvColor = new HsvColor((int)hueUpDown.Value, (int)saturationUpDown.Value, (int)valueUpDown.Value);
if (oldHsvColor != newHsvColor)
{
colorWheel.HsvColor = newHsvColor;
SetColorGradientValuesHsv(newHsvColor.Hue, newHsvColor.Saturation, newHsvColor.Value);
SetColorGradientMinMaxColorsHsv(newHsvColor.Hue, newHsvColor.Saturation, newHsvColor.Value);
SyncRgbFromHsv(newHsvColor);
RgbColor rgbColor = newHsvColor.ToRgb();
OnUserColorChanged(ColorBgra.FromBgra((byte)rgbColor.Blue, (byte)rgbColor.Green, (byte)rgbColor.Red, (byte)alphaUpDown.Value));
}
}
PopIgnoreChangedEvents();
}
}
private void HsvGradientControl_ValueChanged(object sender, IndexEventArgs e)
{
if (IgnoreChangedEvents)
{
return;
}
int hue;
if (sender == hueGradientControl)
{
hue = (hueGradientControl.Value * 360) / 255;
}
else
{
hue = (int)hueUpDown.Value;
}
int saturation;
if (sender == saturationGradientControl)
{
saturation = (saturationGradientControl.Value * 100) / 255;
}
else
{
saturation = (int)saturationUpDown.Value;
}
int value;
if (sender == valueGradientControl)
{
value = (valueGradientControl.Value * 100) / 255;
}
else
{
value = (int)valueUpDown.Value;
}
HsvColor hsvColor = new HsvColor(hue, saturation, value);
colorWheel.HsvColor = hsvColor;
RgbColor rgbColor = hsvColor.ToRgb();
ColorBgra color = ColorBgra.FromBgra((byte)rgbColor.Blue, (byte)rgbColor.Green, (byte)rgbColor.Red, (byte)alphaUpDown.Value);
Utility.SetNumericUpDownValue(hueUpDown, hsvColor.Hue);
Utility.SetNumericUpDownValue(saturationUpDown, hsvColor.Saturation);
Utility.SetNumericUpDownValue(valueUpDown, hsvColor.Value);
Utility.SetNumericUpDownValue(redUpDown, rgbColor.Red);
Utility.SetNumericUpDownValue(greenUpDown, rgbColor.Green);
Utility.SetNumericUpDownValue(blueUpDown, rgbColor.Blue);
string hexText = GetHexNumericUpDownValue(rgbColor.Red, rgbColor.Green, rgbColor.Blue);
hexBox.Text = hexText;
switch (WhichUserColor)
{
case WhichUserColor.Primary:
UserPrimaryColor = color;
OnRelinquishFocus();
break;
case WhichUserColor.Secondary:
UserSecondaryColor = color;
OnRelinquishFocus();
break;
default:
throw new InvalidEnumArgumentException("WhichUserColor property");
}
Update();
}
private void SetColorGradientMinMaxColorsHsv(int h, int s, int v)
{
Color[] hueColors = new Color[361];
for (int newH = 0; newH <= 360; ++newH)
{
HsvColor hsv = new HsvColor(newH, 100, 100);
hueColors[newH] = hsv.ToColor();
}
this.hueGradientControl.CustomGradient = hueColors;
Color[] satColors = new Color[101];
for (int newS = 0; newS <= 100; ++newS)
{
HsvColor hsv = new HsvColor(h, newS, v);
satColors[newS] = hsv.ToColor();
}
this.saturationGradientControl.CustomGradient = satColors;
this.valueGradientControl.MaxColor = new HsvColor(h, s, 100).ToColor();
this.valueGradientControl.MinColor = new HsvColor(h, s, 0).ToColor();
}