private void DrawLineCap(Graphics g, Point linePoint, eLineEndType lineCap, Size capSize, bool isStartCap)
{
if (lineCap == eLineEndType.Arrow)
{
SmoothingMode sm = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.HighQuality;
using (GraphicsPath path = new GraphicsPath())
{
if (isStartCap)
{
if (VerticalLine)
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X - capSize.Width/2, linePoint.Y+capSize.Height),
new Point(linePoint.X+capSize.Width / 2, linePoint.Y+capSize.Height)});
else
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X + capSize.Width, linePoint.Y-capSize.Height/2),
new Point(linePoint.X+capSize.Width, linePoint.Y+ capSize.Height/2)});
}
else
{
if (VerticalLine)
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X + capSize.Width / 2, linePoint.Y - capSize.Height),
new Point(linePoint.X - capSize.Width / 2, linePoint.Y - capSize.Height)});
else
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X - capSize.Width, linePoint.Y + capSize.Height / 2),
new Point(linePoint.X - capSize.Width, linePoint.Y - capSize.Height/2)});
}
path.CloseAllFigures();
using (SolidBrush brush = new SolidBrush(ForeColor))
g.FillPath(brush, path);
}
g.SmoothingMode = sm;
}
else if (lineCap == eLineEndType.Circle)
{
SmoothingMode sm = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.HighQuality;
using (SolidBrush brush = new SolidBrush(ForeColor))
{
if (VerticalLine && isStartCap)
g.FillEllipse(brush, new Rectangle(linePoint.X - capSize.Width/2, linePoint.Y , capSize.Width, capSize.Height));
else if (VerticalLine)
g.FillEllipse(brush, new Rectangle(linePoint.X - capSize.Width/2, linePoint.Y - capSize.Height - 1, capSize.Width, capSize.Height));
else if (isStartCap)
g.FillEllipse(brush, new Rectangle(linePoint.X, linePoint.Y - capSize.Height / 2, capSize.Width, capSize.Height));
else
g.FillEllipse(brush, new Rectangle(linePoint.X - capSize.Width - 1, linePoint.Y - capSize.Height / 2, capSize.Width, capSize.Height));
}
g.SmoothingMode = sm;
}
else if (lineCap == eLineEndType.Diamond)
{
SmoothingMode sm = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.HighQuality;
using (GraphicsPath path = new GraphicsPath())
{
if (isStartCap)
{
if (VerticalLine)
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X - capSize.Width/2, linePoint.Y+capSize.Height / 2),
new Point(linePoint.X, linePoint.Y+capSize.Height),
new Point(linePoint.X+capSize.Width / 2, linePoint.Y+capSize.Height / 2)});
else
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X + capSize.Width/2, linePoint.Y-capSize.Height/2),
new Point(linePoint.X + capSize.Width, linePoint.Y),
new Point(linePoint.X+capSize.Width / 2, linePoint.Y+ capSize.Height/2)});
}
else
{
if (VerticalLine)
{
linePoint.Y--;
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X + capSize.Width / 2, linePoint.Y - capSize.Height / 2),
new Point(linePoint.X, linePoint.Y - capSize.Height),
new Point(linePoint.X - capSize.Width / 2, linePoint.Y - capSize.Height / 2)});
}
else
{
linePoint.X--;
path.AddLines(new Point[] {
new Point(linePoint.X, linePoint.Y),
new Point(linePoint.X - capSize.Width / 2, linePoint.Y - capSize.Height / 2),
new Point(linePoint.X - capSize.Width, linePoint.Y),
new Point(linePoint.X - capSize.Width / 2, linePoint.Y + capSize.Height/2)});
}
}
path.CloseAllFigures();
using (SolidBrush brush = new SolidBrush(ForeColor))
g.FillPath(brush, path);
}
g.SmoothingMode = sm;
}
else if (lineCap == eLineEndType.Rectangle)
{
SmoothingMode sm = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.HighQuality;
using (SolidBrush brush = new SolidBrush(ForeColor))
{
if (VerticalLine && isStartCap)
g.FillRectangle(brush, new Rectangle(linePoint.X - capSize.Width / 2, linePoint.Y, capSize.Width, capSize.Height));
else if (VerticalLine)
g.FillRectangle(brush, new Rectangle(linePoint.X - capSize.Width / 2, linePoint.Y - capSize.Height - 1, capSize.Width, capSize.Height));
else if (isStartCap)
g.FillRectangle(brush, new Rectangle(linePoint.X, linePoint.Y - capSize.Height / 2, capSize.Width, capSize.Height));
else
g.FillRectangle(brush, new Rectangle(linePoint.X - capSize.Width - 1, linePoint.Y - capSize.Height / 2, capSize.Width, capSize.Height));
}
g.SmoothingMode = sm;
}
}
/// <summary>
/// Called when EndLineCap property has changed.
/// </summary>
/// <param name="oldValue">Old property value</param>
/// <param name="newValue">New property value</param>
protected virtual void OnEndLineCapChanged(eLineEndType oldValue, eLineEndType newValue)
{
//OnPropertyChanged(new PropertyChangedEventArgs("EndLineCap"));
this.Refresh();
}