protected CustomLineCap GetClone(Pen pen, float size, bool startCap)
{
float endPoint;
if (pen.Width * _designWidth < size)
{
endPoint = pen.Width == 0 ? 1 : size / pen.Width;
}
else
{
endPoint = _designWidth;
}
if (startCap)
{
endPoint = -endPoint;
}
GraphicsPath hPath = new GraphicsPath();
// Create the outline for our custom end cap.
hPath.AddLine(new PointF(endPoint < 0 ? 0.5f : -0.5f, 0), new PointF(endPoint / 2, 0));
CustomLineCap clone = new CustomLineCap(null, hPath); // we set the stroke path only
clone.SetStrokeCaps(LineCap.Flat, LineCap.Flat);
return(clone);
}
private CustomLineCap GetClone(Pen pen, float size)
{
float endPoint;
endPoint = pen.Width == 0 ? 1 : size / pen.Width;
endPoint /= 2;
if (endPoint <= 0)
{
endPoint = 1e-3f;
}
var hPath = new GraphicsPath();
var r = endPoint / (2 * Math.Sin(_designAngle * (Math.PI / 180)));
var b = r - r * Math.Cos(_designAngle * (Math.PI / 180));
var h = endPoint / 2;
// Create the outline for our custom end cap.
hPath.AddArc(
(float)(-r - h), (float)(-b),
(float)(2 * r), (float)(2 * r),
(float)(-90 - _designAngle), (float)(2 * _designAngle));
hPath.AddArc(
(float)(h - r), (float)(b - 1.999999 * r),
(float)(2 * r), (float)(2 * r),
(float)(90 + _designAngle), (float)(-2 * _designAngle));
var clone = new CustomLineCap(null, hPath); // we set the stroke path only
clone.SetStrokeCaps(LineCap.Flat, LineCap.Flat);
return(clone);
}
private CustomLineCap GetClone(Pen pen, float size)
{
float endPoint;
endPoint = pen.Width == 0 ? 1 : size / (pen.Width * 2) - 0.5f;
if (endPoint < 0)
{
endPoint = 1e-3f;
}
var hPath = new GraphicsPath();
// Create the outline for our custom end cap.
hPath.AddPolygon(new PointF[] {
new PointF(endPoint, -endPoint),
new PointF(endPoint, endPoint),
new PointF(-endPoint, endPoint),
new PointF(-endPoint, -endPoint),
});
var clone = new CustomLineCap(null, hPath, LineCap.Flat, endPoint); // we set the stroke path only
clone.SetStrokeCaps(LineCap.Flat, LineCap.Flat);
return(clone);
}
private CustomLineCap GetClone(Pen pen, float size)
{
float endPoint;
endPoint = pen.Width == 0 ? 1 : size / (pen.Width);
if (endPoint <= 0)
{
endPoint = 1e-3f;
}
float c = 0.8660254f; // 0.5 / Math.Tan(30°);
float r = 1; // 0.5/Math.Sin(30°);
var hPath = new GraphicsPath();
// Create the outline for our custom end cap.
hPath.AddPolygon(new PointF[] {
new PointF(0, -endPoint * 0.866f + r),
new PointF(endPoint / 2 - c, -0.5f),
new PointF(-endPoint / 2 + c, -0.5f),
});
var clone = new CustomLineCap(null, hPath, LineCap.Flat, endPoint * 0.866f - r); // we set the stroke path only
clone.SetStrokeCaps(LineCap.Flat, LineCap.Flat);
return(clone);
}
public void SetThenGetStrokeCaps_Success(LineCap startCap, LineCap endCap)
{
using (GraphicsPath strokePath = new GraphicsPath())
using (CustomLineCap customLineCap = new CustomLineCap(null, strokePath))
{
customLineCap.SetStrokeCaps(startCap, endCap);
customLineCap.GetStrokeCaps(out LineCap retrievedStartCap, out LineCap retrievedEndCap);
Assert.Equal(startCap, retrievedStartCap);
Assert.Equal(endCap, retrievedEndCap);
}
}
[InlineData(LineCap.Custom + 1, LineCap.Flat)] // Above valid enum range
public void SetStrokeCaps_InvalidLineCap_ThrowsArgumentException(LineCap startCap, LineCap endCap)
{
using (GraphicsPath strokePath = new GraphicsPath())
using (CustomLineCap customLineCap = new CustomLineCap(null, strokePath))
{
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.SetStrokeCaps(startCap, endCap));
// start and end cap should be unchanged.
customLineCap.GetStrokeCaps(out LineCap retrievedStartCap, out LineCap retrievedEndCap);
Assert.Equal(LineCap.Flat, retrievedStartCap);
Assert.Equal(LineCap.Flat, retrievedEndCap);
}
}
/// <summary>
/// Serialization constructor
/// </summary>
/// <param name="info"></param>
/// <param name="context"></param>
public CustomLineCapRef(SerializationInfo info, StreamingContext context)
{
var baseCap = (LineCap)info.GetInt32("BaseCap");
var baseInset = info.GetSingle("BaseInset");
var fillPath = (GraphicsPath)info.GetValue("FillPath", (typeof(GraphicsPath)));
var strokePath = (GraphicsPath)info.GetValue("StrokePath", (typeof(GraphicsPath)));
var startCap = (LineCap)info.GetInt32("StartCap");
var endCap = (LineCap)info.GetInt32("StartCap");
_clp = new CustomLineCap(fillPath, strokePath, baseCap, baseInset);
_clp.StrokeJoin = (LineJoin)info.GetInt32("StrokeJoin");
_clp.WidthScale = info.GetSingle("WidthScale");
_clp.SetStrokeCaps(startCap, endCap);
}
public void Disposed_MembersThrow()
{
using (GraphicsPath strokePath = new GraphicsPath())
using (CustomLineCap customLineCap = new CustomLineCap(null, strokePath))
{
customLineCap.Dispose();
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.StrokeJoin);
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.BaseCap);
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.BaseInset);
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.WidthScale);
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.Clone());
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.SetStrokeCaps(LineCap.Flat, LineCap.Flat));
AssertExtensions.Throws <ArgumentException>(null, () => customLineCap.GetStrokeCaps(out LineCap startCap, out LineCap endCap));
}
}
private CustomLineCap GetClone(Pen pen, float size)
{
float endPoint;
endPoint = pen.Width == 0 ? 1 : size / pen.Width;
var hPath = new GraphicsPath();
// Create the outline for our custom end cap.
hPath.AddLine(new PointF(-endPoint / 2, 0), new PointF(endPoint / 2, 0));
var clone = new CustomLineCap(null, hPath); // we set the stroke path only
clone.SetStrokeCaps(LineCap.Flat, LineCap.Flat);
return(clone);
}
private void DrawIncludes(Point start, Point end)
{
GraphicsPath hPath = new GraphicsPath();
hPath.AddLine(0, 0, -2, -2);
hPath.AddLine(0, 0, 2, -2);
CustomLineCap HookCap = new CustomLineCap(null, hPath);
HookCap.SetStrokeCaps(LineCap.Round, LineCap.Round);
HookCap.WidthScale = 1.7f;
float[] dashValues = { 2, 2, 2, 2 };
Pen arrowPen = new Pen(this.Pen.Color, this.Pen.Width);
arrowPen.DashPattern = dashValues;
arrowPen.CustomEndCap = HookCap;
this.Graphics.DrawLine(arrowPen, start, end);
}
private CustomLineCap ArrowLineCap()
{
float num = 1f;
GraphicsPath graphicsPath = new GraphicsPath();
graphicsPath.AddLines(new PointF[5]
{
new PointF(0f, 0f),
new PointF(-1f * num, 0f),
new PointF(0f, 3f * num),
new PointF(1f * num, 0f),
new PointF(0f, 0f)
});
graphicsPath.CloseAllFigures();
CustomLineCap customLineCap = new CustomLineCap(null, graphicsPath, LineCap.ArrowAnchor);
customLineCap.SetStrokeCaps(LineCap.Flat, LineCap.Flat);
graphicsPath.Dispose();
return(customLineCap);
}
static Edge2()
{
GraphicsPath hPath = new GraphicsPath();
// Create the outline for the custom end cap.
float sin = arrowSize * (float)Math.Sin(Math.PI / 3);
float cos = arrowSize * 0.5f;
hPath.AddPolygon(new PointF[] { new PointF(0, 0), new PointF(cos, -sin), new PointF(-cos, -sin) });
// Construct the hook-shaped end cap.
CustomLineCap HookCap = new CustomLineCap(hPath, null);
// Set the start cap and end cap of the HookCap to be rounded.
HookCap.SetStrokeCaps(LineCap.Round, LineCap.Round);
linePen = new Pen(Color.Black, 1f);
linePen.StartCap = LineCap.RoundAnchor;
linePen.CustomEndCap = HookCap;
linePen.LineJoin = LineJoin.Round;
}
////////////////////////
protected void DrawCaps(PaintEventArgs e)
{
GraphicsPath hPath = new GraphicsPath();
// Create the outline for our custom end cap.
hPath.AddLine(new Point(0, 0), new Point(0, 5));
hPath.AddLine(new Point(0, 5), new Point(5, 1));
hPath.AddLine(new Point(5, 1), new Point(3, 1));
// Construct the hook-shaped end cap.
CustomLineCap HookCap = new CustomLineCap(null, hPath);
// Set the start cap and end cap of the HookCap to be rounded.
HookCap.SetStrokeCaps(LineCap.Round, LineCap.Round);
// Create a pen and set end custom start and end
// caps to the hook cap.
Pen customCapPen = new Pen(Color.Black, 5);
customCapPen.CustomStartCap = HookCap;
customCapPen.CustomEndCap = HookCap;
// Create a second pen using the start and end caps from
// the hook cap.
Pen capPen = new Pen(Color.Red, 10);
LineCap startCap;
LineCap endCap;
HookCap.GetStrokeCaps(out startCap, out endCap);
capPen.StartCap = startCap;
capPen.EndCap = endCap;
// Create a line to draw.
Point[] points = { new Point(100, 100), new Point(200, 50),
new Point(250, 300) };
// Draw the lines.
e.Graphics.DrawLines(capPen, points);
e.Graphics.DrawLines(customCapPen, points);
}
private void SetStrokeCapsMenu_Click(object sender,
System.EventArgs e)
{
// Create a graphic
Graphics g = this.CreateGraphics();
g.Clear(this.BackColor);
// Create a path for custom line cap. This
// path will have two lines from points
// -3, -3 to 0, 0 and 0, 0 to 3, -3
Point[] points =
{
new Point(-3, -3),
new Point(0, 0),
new Point(3, -3)
};
GraphicsPath path = new GraphicsPath();
path.AddLines(points);
// Create a Custom line cap from the path
CustomLineCap cap =
new CustomLineCap(null, path);
// Set the start and end caps of the Custom cap
cap.SetStrokeCaps(LineCap.Round, LineCap.Triangle);
// Create a Pen object and set its start and end
// caps
Pen redPen = new Pen(Color.Red, 15);
redPen.CustomStartCap = cap;
redPen.CustomEndCap = cap;
redPen.DashStyle = DashStyle.DashDotDot;
// Draw the line
g.DrawLine(redPen,
new Point(100, 100),
new Point(400, 100));
// Dispose
g.Dispose();
}
public ConnectionDrawer()
{
penLine.EndCap = LineCap.ArrowAnchor;
GraphicsPath hPath = new GraphicsPath();
// Create the outline for our custom end cap.
//hPath.AddLine(new Point(1, -8), new Point(0,-4));
//hPath.AddLine(new Point(0,-4), new Point(-1,-8));
//hPath.AddLine(new Point(-1,-8), new Point(1,-8));
int bias = 14;
int halfWidth = 2;
int length = 4;
hPath.AddLine(new Point(halfWidth, -bias), new Point(0, -bias + length));
hPath.AddLine(new Point(0, -bias + length), new Point(-halfWidth, -bias));
hPath.AddLine(new Point(-halfWidth, -bias), new Point(halfWidth, -bias));
//hPath.AddLine(new Point(0, 0), new Point(0, 10));
// Construct the hook-shaped end cap.
HookCap = new CustomLineCap(null, hPath);
// Set the start cap and end cap of the HookCap to be rounded.
HookCap.SetStrokeCaps(LineCap.Round, LineCap.Round);
penLine.CustomEndCap = HookCap;
LineWidth = 1;
}
/// <summary>
/// Creates a custom line cap given the <paramref name="lineShape"/> and scales.
/// </summary>
/// <param name="lineShape">Desired line shape.</param>
/// <param name="scaleFill">Scale value used for drawing elements that are filled.</param>
/// <param name="scaleStroke">Scale value used for drawing elements that are just outlines.</param>
/// <returns>
/// New <see cref="CustomLineCap"/> configured to produce <paramref name="lineShape"/>.
/// </returns>
private static CustomLineCap GetLineShapeCap(LineShape lineShape, float scaleFill, float scaleStroke)
{
float baseInset = 0.0f;
bool fill = true;
using (var path = new GraphicsPath())
{
switch (lineShape)
{
case LineShape.Arrow:
{
var size = new SizeF(2.75f * scaleStroke, 4.0f * scaleStroke);
var halfW = size.Width * 0.5f;
var height = size.Height;
fill = false;
path.AddLines(new PointF[]
{
new PointF(-halfW, -height), new PointF(0, 0), new PointF(halfW, -height)
});
}
break;
case LineShape.SolidArrow:
{
var size = new SizeF(4.25f * scaleFill, 5.57f * scaleFill);
var halfW = size.Width * 0.5f;
var height75 = size.Height * 0.73f;
var height25 = size.Height * 0.27f;
baseInset = height75;
path.AddLines(new PointF[]
{
new PointF(0, -height75),
new PointF(halfW, -height75),
new PointF(0, height25),
new PointF(-halfW, -height75),
new PointF(0, -height75),
});
}
break;
case LineShape.Tail:
{
var size = new SizeF(2.10f * scaleStroke, 4.0f * scaleStroke);
var halfW = size.Width * 0.5f;
var height = size.Height;
fill = false;
path.AddLines(new[] {
new PointF(-halfW, 0),
new PointF(0, -height * 0.5f),
new PointF(halfW, 0)
});
path.StartFigure();
path.AddLines(new[] {
new PointF(-halfW, height * 0.5f),
new PointF(0, 0),
new PointF(halfW, height * 0.5f)
});
}
break;
case LineShape.SolidTail:
{
var size = new SizeF(3.02f * scaleFill, 4.65f * scaleFill);
var halfW = size.Width * 0.5f;
var halfH = size.Height * 0.5f;
var height38 = size.Height * 0.38f;
var height62 = size.Height * 0.62f;
path.AddPolygon(new[] {
new PointF(0, -height38),
new PointF(halfW, 0),
new PointF(halfW, height62),
new PointF(0, height62 - height38),
new PointF(-halfW, height62),
new PointF(-halfW, 0),
new PointF(0, -height38),
});
}
break;
case LineShape.Circle:
{
var size = new SizeF(2.4f * scaleFill, 2.4f * scaleFill);
path.AddEllipse(-size.Width * 0.5f, -size.Height * 0.5f, size.Width, size.Height);
}
break;
case LineShape.Square:
{
var size = new SizeF(3.0f * scaleFill, 3.0f * scaleFill);
path.AddRectangle(new RectangleF(-size.Width * 0.5f, -size.Height * 0.5f, size.Width, size.Height));
}
break;
default:
break;
}
var result = new CustomLineCap(fill ? path : null, fill ? null : path, LineCap.Flat, baseInset);
result.SetStrokeCaps(LineCap.Round, LineCap.Round);
result.StrokeJoin = LineJoin.Round;
return(result);
}
}
