///
/// <summary>
/// Draw color schema tool (Monochromatic, Analogous ...)</summary>
///
public void DrawPointers(bool colorOnly = false)
{
double width = canvasSpectrum.ActualWidth;
double height = canvasSpectrum.ActualHeight;
var p = Gradient;
double diam = 16;
if (Gradient != null)
{
var stops = Gradient.InteriorStops.ToArray();
if (m_samplesb == null || m_samplesb.Length != stops.Length)
{
if (m_samplesb != null)
{
canvasSpectrum.Children.Clear();
CurrentStop = null;
}
m_samplesb = new GradientStopPinpoint[stops.Length];
for (int i = 0; i < m_samplesb.Length; ++i)
{
m_samplesb[i] = new GradientStopPinpoint()
{
Opacity = 0.8,
IsHitTestVisible = true,
Width = diam,
Height = diam,
CurrentColor = stops[i].Color,
Tag = i,
Cursor = Cursors.Hand,
PaletteColor = stops[i]
};
canvasSpectrum.Children.Add(m_samplesb[i]);
SetPointEvents(m_samplesb[i]);
m_samplesb[i].SetValue(Canvas.LeftProperty, width * stops[i].Offset);
m_samplesb[i].SetValue(Canvas.TopProperty, height / 2 - radius / 2);
}
}
for (int i = 0; i < m_samplesb.Length; ++i)
{
m_samplesb[i].SetValue(Canvas.LeftProperty, width * stops[i].Offset);
m_samplesb[i].SetValue(Canvas.TopProperty, height / 2 - radius / 2);
}
}
}
private void SetPointEvents(
GradientStopPinpoint e
)
{
var drag = false;
Point shift = new Point();
e.MouseRightButtonDown += (s, ev) =>
{
var pinpoint = (GradientStopPinpoint)s;
Gradient.Stops.Remove(pinpoint.PaletteColor);
CurrentStop = null;
};
e.MouseLeftButtonDown += (s, ev) =>
{
drag = true;
shift = ev.GetPosition(s as FrameworkElement);
SelectColor(s as GradientStopPinpoint);
//selected = Gradient.Colors[(int)(s as FrameworkElement).Tag];
e.CaptureMouse();
};
e.MouseLeftButtonUp += (s, ev) =>
{
drag = false;
e.ReleaseMouseCapture();
bool outOfOrder = false;
for (int i = 0; i < m_samplesb.Length - 1; i++)
{
if (m_samplesb[i].PaletteColor.Offset > m_samplesb[i + 1].PaletteColor.Offset)
{
outOfOrder = true;
break;
}
}
if (outOfOrder)
{
var interiorColors = Gradient.InteriorStops.ToArray();
for (int i = 0; i < m_samplesb.Length; i++)
{
m_samplesb[i].PaletteColor = interiorColors[i];
m_samplesb[i].CurrentColor = interiorColors[i].Color;
}
}
};
e.MouseMove += (s, ev) =>
{
if (Gradient == null)
{
return;
}
if (drag)
{
double width = canvasSpectrum.ActualWidth;
double height = canvasSpectrum.ActualHeight;
var pinpoint = (GradientStopPinpoint)s;
double diam = pinpoint.ActualWidth;
if (width <= 0)
{
return;
}
Point p = ev.GetPosition(canvasSpectrum);
p.X = p.X - shift.X + diam / 2;
p.Y = p.Y - shift.Y + diam / 2;
var newOffset = p.X / width;
pinpoint.PaletteColor.Offset = NormalizeOffset(newOffset);
}
};
}
private void SelectColor(GradientStopPinpoint pp)
{
CurrentStop = pp.PaletteColor;
}