private static void PreventSaturationHandlesExceedingLimits(HueSelectorHandle handleToChange)
{
if (handleToChange.SaturationRange > 0)
{
if (handleToChange.SaturationRange + handleToChange.Saturation > 1)
{
handleToChange.SaturationRange = 1 - handleToChange.Saturation;
}
else if (handleToChange.Saturation - handleToChange.SaturationRange < 0)
{
handleToChange.SaturationRange = handleToChange.Saturation;
}
}
else
{
if (handleToChange.Saturation - handleToChange.SaturationRange > 1)
{
handleToChange.SaturationRange = -1 + handleToChange.Saturation;
}
else if (handleToChange.Saturation + handleToChange.SaturationRange < 0)
{
handleToChange.SaturationRange = handleToChange.Saturation;
}
}
}
private void DrawHandle(PaintEventArgs e, HueSelectorHandle handle, bool label, SolidBrush handleBrush,
Rectangle handleRect, bool fill = false)
{
e.Graphics.FillEllipse(handleBrush, handleRect);
e.Graphics.DrawEllipse(Pens.LightGray, handleRect);
if (label)
{
using (var font1 = new Font("Segoe UI", ClientRectangle.Width / 30, System.Drawing.FontStyle.Bold, GraphicsUnit.Point))
{
var stringFormat = new StringFormat
{
Alignment = StringAlignment.Center,
LineAlignment = StringAlignment.Center
};
var centrePoint = new PointF((handleRect.Left + handleRect.Right) / 2, (handleRect.Top + handleRect.Bottom) / 2);
if (_labels == null || _labels.Count <= handle.HandleNumber)
{
return;
}
e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 + 1, (handleRect.Top + handleRect.Bottom) / 2 + 1), stringFormat);
e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - 1, (handleRect.Top + handleRect.Bottom) / 2 - 1), stringFormat);
e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 + 1, (handleRect.Top + handleRect.Bottom) / 2 - 1), stringFormat);
e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - 1, (handleRect.Top + handleRect.Bottom) / 2 + 1), stringFormat);
e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.White, new PointF((handleRect.Left + handleRect.Right) / 2, (handleRect.Top + handleRect.Bottom) / 2), stringFormat);
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.White, centrePoint, stringFormat);
//var stringSize = e.Graphics.MeasureString(_labels[handle.HandleNumber], labelFont);
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - stringSize.Width/2, handleRect.Top));
//
//GraphicsPath p = new GraphicsPath();
//p.AddString(
// _labels[handle.HandleNumber], // text to draw
// FontFamily.GenericSansSerif, // or any other font family
// (int)System.Drawing.FontStyle.Bold, // font style (bold, italic, etc.)
// (float)(e.Graphics.DpiY * 10.1 / 72), // em size
// new System.Drawing.Point((int)((handleRect.Left + handleRect.Right) / 2 - stringSize.Width / 2), handleRect.Top), // location where to draw text
// new StringFormat()); // set options here (e.g. center alignment)
//e.Graphics.DrawPath(Pens.Black, p);
//
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - stringSize.Width / 2 + 1, handleRect.Top + 1));
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - stringSize.Width / 2 - 1, handleRect.Top - 1));
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - stringSize.Width / 2 + 1, handleRect.Top - 1));
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.Black, new PointF((handleRect.Left + handleRect.Right) / 2 - stringSize.Width / 2 - 1, handleRect.Top + 1));
//e.Graphics.DrawString(_labels[handle.HandleNumber], labelFont, Brushes.White, new PointF((handleRect.Left + handleRect.Right) / 2 - stringSize.Width / 2, handleRect.Top ));
}
}
}
private void DrawHandles(PaintEventArgs e, HueSelectorHandle handle, bool shadow)
{
var handleBrush = new SolidBrush(Color.FromArgb(128, 32, 32, 32));
DrawHandle(e, handle, false, handleBrush,
handle.GetHandleRangeRectangle(ClientRectangle, HalfHandleSizeX / 2, HalfHandleSizeY / 2, true,
PerBulb ? handle.HandleNumber : 1, shadow));
DrawHandle(e, handle, false, handleBrush,
handle.GetHandleRangeRectangle(ClientRectangle, HalfHandleSizeX / 2, HalfHandleSizeY / 2, false,
PerBulb ? handle.HandleNumber : 1, shadow));
handleBrush = new SolidBrush(Color.FromArgb(128, 32, 32, 32));
DrawHandle(e, handle, true, handleBrush,
handle.GetHandleRectangle(ClientRectangle, HalfHandleSizeX, HalfHandleSizeY,
PerBulb ? handle.HandleNumber : 1, shadow));
}
private void DrawHandle(PaintEventArgs e, HueSelectorHandle handle, bool label, SolidBrush handleBrush,
Rectangle handleRect)
{
e.Graphics.FillEllipse(handleBrush, handleRect);
if (label)
{
using (var font1 = new Font("Segoe UI", ClientRectangle.Width / 30, System.Drawing.FontStyle.Bold, GraphicsUnit.Point))
{
var stringFormat = new StringFormat
{
Alignment = StringAlignment.Center,
LineAlignment = StringAlignment.Center
};
e.Graphics.DrawString(handle.HandleNumber.ToString(), font1, Brushes.White, handleRect, stringFormat);
}
}
}
