//draw gradient and faders
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (this.Width < BORDER * 2 || this.Height < BORDER * 2)
{
return;
}
e.Graphics.SmoothingMode =
System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
//draw gradient
Rectangle area = new Rectangle(BORDER, BORDER,
this.Width - BORDER * 2 - 1, this.Height - BORDER * 2 - 1);
if (_blend != null)
{
using (HatchBrush brs = new HatchBrush(HatchStyle.LargeCheckerBoard,
Color.Silver, Color.White)) {
e.Graphics.FillRectangle(brs, area);
}
using (Bitmap bmp = _blend.GenerateColorGradientImage(area.Size, DiscreteColors)) {
e.Graphics.DrawImage(bmp, area.X, area.Y);
}
}
//border
e.Graphics.DrawRectangle(Pens.Silver, area);
if (_blend != null)
{
List <ColorPoint> sortedColors = new List <ColorPoint>(_blend.Colors.SortedArray());
// we'll assume they're sorted, so any colorpoints at the same position are contiguous in the array
for (int i = 0; i < sortedColors.Count; i++)
{
ColorPoint currentPoint = sortedColors[i];
double currentPos = currentPoint.Position;
List <Color> currentColors = new List <Color>();
currentColors.Add(currentPoint.GetColor(Color.Black));
while (i + 1 < sortedColors.Count && sortedColors[i + 1].Position == currentPos)
{
currentColors.Add(sortedColors[i + 1].GetColor(Color.Black));
i++;
}
DrawFader(e.Graphics, currentPoint.Position, currentColors, false,
_selection != null && _selection.Contains(currentPoint) && !_focussel);
}
////draw color points
//foreach (ColorPoint pnt in _blend.Colors)
// DrawFader(e.Graphics, pnt.Position,
// pnt.GetColor(Color.Black),
// false, pnt == _selection && !_focussel);
// MS: 25/09/11: disable drawing alpha points, we don't want to use them (yet).
// draw alpha points
//foreach (AlphaPoint pnt in _blend.Alphas)
// DrawFader(e.Graphics, pnt.Position,
// pnt.GetColor(Color.Black),
// true, pnt == _selection && !_focussel);
// draw selected focus
if (_selection != null && _selection.Count > 0)
{
DrawDiamond(e.Graphics, _blend.GetFocusPosition(_selection.First()),
_selection.First() is AlphaPoint, _focussel);
}
}
}
