public override ColorBgra Apply(ColorBgra color)
{
//adjust saturation
byte intensity = color.GetIntensityByte();
color.R = Utility.ClampToByte((intensity * 1024 + (color.R - intensity) * satFactor) >> 10);
color.G = Utility.ClampToByte((intensity * 1024 + (color.G - intensity) * satFactor) >> 10);
color.B = Utility.ClampToByte((intensity * 1024 + (color.B - intensity) * satFactor) >> 10);
HsvColor hsvColor = HsvColor.FromColor(color.ToColor());
int hue = hsvColor.Hue;
hue += hueDelta;
while (hue < 0)
{
hue += 360;
}
while (hue > 360)
{
hue -= 360;
}
hsvColor.Hue = hue;
ColorBgra newColor = ColorBgra.FromColor(hsvColor.ToColor());
newColor = blendOp.Apply(newColor);
newColor.A = color.A;
return(newColor);
}
protected override void OnPaint(PaintEventArgs e)
{
e.Graphics.CompositingMode = CompositingMode.SourceOver;
Point mousePt = Control.MousePosition;
mousePt = PointToClient(mousePt);
int activeIndex = MouseXYToColorIndex(mousePt.X, mousePt.Y);
for (int i = 0; i < this.colors.Count; ++i)
{
ColorBgra c = this.colors[i];
int swatchX = i % swatchColumns;
int swatchY = i / swatchColumns;
Rectangle swatchRect = new Rectangle(
swatchX * scaledSwatchSize,
swatchY * scaledSwatchSize,
scaledSwatchSize,
scaledSwatchSize);
PushButtonState state;
if (this.mouseDown)
{
if (i == this.mouseDownIndex)
{
state = PushButtonState.Pressed;
}
else
{
state = PushButtonState.Normal;
}
}
else if (i == activeIndex)
{
state = PushButtonState.Hot;
}
else
{
state = PushButtonState.Normal;
}
bool drawOutline;
switch (state)
{
case PushButtonState.Hot:
drawOutline = true;
break;
case PushButtonState.Pressed:
drawOutline = false;
break;
case PushButtonState.Default:
case PushButtonState.Disabled:
case PushButtonState.Normal:
drawOutline = false;
break;
default:
throw new InvalidEnumArgumentException();
}
Utility.DrawColorRectangle(e.Graphics, swatchRect, c.ToColor(), drawOutline);
}
if (this.blinkHighlight)
{
int period = (Math.Abs(Environment.TickCount) / blinkInterval) % 2;
Color color;
switch (period)
{
case 0:
color = SystemColors.Window;
break;
case 1:
color = SystemColors.Highlight;
break;
default:
throw new InvalidOperationException();
}
using (Pen pen = new Pen(color))
{
e.Graphics.DrawRectangle(pen, new Rectangle(0, 0, Width - 1, Height - 1));
}
}
base.OnPaint(e);
}
private void DrawToGraphics(Graphics g)
{
ColorBgra colorSolid = ColorBgra.FromColor(this.ForeColor);
ColorBgra colorGuide = ColorBgra.FromColor(this.ForeColor);
ColorBgra colorGrid = ColorBgra.FromColor(this.ForeColor);
colorGrid.A = 128;
colorGuide.A = 96;
Pen penSolid = new Pen(colorSolid.ToColor(), 1);
Pen penGrid = new Pen(colorGrid.ToColor(), 1);
Pen penGuide = new Pen(colorGuide.ToColor(), 1);
penGrid.DashStyle = DashStyle.Dash;
g.Clear(this.BackColor);
g.SmoothingMode = SmoothingMode.AntiAlias;
Rectangle ourRect = ClientRectangle;
ourRect.Inflate(-1, -1);
if (lastMouseXY.Y >= 0)
{
g.DrawLine(penGuide, 0, lastMouseXY.Y, Width, lastMouseXY.Y);
}
if (lastMouseXY.X >= 0)
{
g.DrawLine(penGuide, lastMouseXY.X, 0, lastMouseXY.X, Height);
}
for (float f = 0.25f; f <= 0.75f; f += 0.25f)
{
float x = Utility.Lerp(ourRect.Left, ourRect.Right, f);
float y = Utility.Lerp(ourRect.Top, ourRect.Bottom, f);
g.DrawLine(penGrid,
Point.Round(new PointF(x, ourRect.Top)),
Point.Round(new PointF(x, ourRect.Bottom)));
g.DrawLine(penGrid,
Point.Round(new PointF(ourRect.Left, y)),
Point.Round(new PointF(ourRect.Right, y)));
}
g.DrawLine(penGrid, ourRect.Left, ourRect.Bottom, ourRect.Right, ourRect.Top);
float width = this.ClientRectangle.Width;
float height = this.ClientRectangle.Height;
for (int c = 0; c < channels; ++c)
{
SortedList <int, int> channelControlPoints = controlPoints[c];
int points = channelControlPoints.Count;
ColorBgra color = GetVisualColor(c);
ColorBgra colorSelected = ColorBgra.Blend(color, ColorBgra.White, 128);
const float penWidthNonSelected = 1;
const float penWidthSelected = 2;
float penWidth = mask[c] ? penWidthSelected : penWidthNonSelected;
Pen penSelected = new Pen(color.ToColor(), penWidth);
color.A = 128;
Pen pen = new Pen(color.ToColor(), penWidth);
Brush brush = new SolidBrush(color.ToColor());
SolidBrush brushSelected = new SolidBrush(Color.White);
SplineInterpolator interpolator = new SplineInterpolator();
IList <int> xa = channelControlPoints.Keys;
IList <int> ya = channelControlPoints.Values;
PointF[] line = new PointF[Entries];
for (int i = 0; i < points; ++i)
{
interpolator.Add(xa[i], ya[i]);
}
for (int i = 0; i < line.Length; ++i)
{
line[i].X = (float)i * (width - 1) / (entries - 1);
line[i].Y = (float)(Utility.Clamp(entries - 1 - interpolator.Interpolate(i), 0, entries - 1)) *
(height - 1) / (entries - 1);
}
pen.LineJoin = LineJoin.Round;
g.DrawLines(pen, line);
for (int i = 0; i < points; ++i)
{
int k = channelControlPoints.Keys[i];
float x = k * (width - 1) / (entries - 1);
float y = (entries - 1 - channelControlPoints.Values[i]) * (height - 1) / (entries - 1);
const float radiusSelected = 4;
const float radiusNotSelected = 3;
const float radiusUnMasked = 2;
bool selected = (mask[c] && pointsNearMousePerChannel[c] == i);
float size = selected ? radiusSelected : (mask[c] ? radiusNotSelected : radiusUnMasked);
RectangleF rect = Utility.RectangleFromCenter(new PointF(x, y), size);
g.FillEllipse(selected ? brushSelected : brush, rect.X, rect.Y, rect.Width, rect.Height);
g.DrawEllipse(selected ? penSelected : pen, rect.X, rect.Y, rect.Width, rect.Height);
}
pen.Dispose();
}
penSolid.Dispose();
penGrid.Dispose();
penGuide.Dispose();
}
