void PaintJoint(NPaintVisitor pv, double radius)
{
double innerR = radius - 3;
pv.PaintEllipse(-radius, -radius, 2 * radius, 2 * radius);
pv.PaintEllipse(-innerR, -innerR, 2 * innerR, 2 * innerR);
}
protected override void OnPostPaint(NPaintVisitor visitor)
{
base.OnPostPaint(visitor);
if (String.IsNullOrEmpty(m_Status))
{
return;
}
visitor.ClearStyles();
visitor.SetFont(Font);
// Determine status bounds
NRectangle contentArea = GetContentEdge();
double length = NMath.Max(contentArea.Width, contentArea.Height) * 0.3;
NRectangle statusBounds = new NRectangle(contentArea.Right - length - 5,
contentArea.Top + 5, length, length);
// Fill the status bounds with a circle
NExamplesHomePage homePage = (NExamplesHomePage)GetFirstAncestor(NExamplesHomePage.NExamplesHomePageSchema);
NColor color = homePage.GetStatusColor(m_Status);
visitor.SetFill(new NColor(color, 160));
visitor.PaintEllipse(statusBounds);
// Create text paint settings
NPaintTextRectSettings settings = new NPaintTextRectSettings();
settings.HorzAlign = ENTextHorzAlign.Center;
settings.VertAlign = ENTextVertAlign.Center;
// Paint the status text in the top right corner
visitor.SetFill(NColor.White);
visitor.PaintString(statusBounds, m_Status, ref settings);
}
public void Paint(NPaintVisitor visitor)
{
NColor color;
switch (State)
{
case ENTouchDeviceState.Down:
color = NColor.Blue;
break;
case ENTouchDeviceState.Unknown:
color = NColor.Green;
break;
case ENTouchDeviceState.Up:
color = NColor.Red;
break;
default:
throw new Exception("New ENTouchDeviceState?");
}
NSize size = Size;
if (size.Width == 0 || size.Height == 0)
{
size = new NSize(5, 5);
}
visitor.SetStroke(new NStroke(color));
visitor.PaintEllipse(NRectangle.FromCenterAndSize(Location, size));
}
void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
NStroke stroke = (NStroke)canvas.Tag;
NPaintVisitor visitor = args.PaintVisitor;
visitor.SetStroke(stroke);
visitor.SetFill(null);
double strokeWidth = stroke.Width;
double rectWidth = 300;
double ellipseWidth = 150;
double polylineWidth = 180;
double dist = 20;
double x1 = 10 + strokeWidth / 2;
double x2 = x1 + rectWidth + dist + strokeWidth;
double x3 = x2 + ellipseWidth;
double x4 = x3 + dist + strokeWidth;
double x5 = x4 + polylineWidth + dist + strokeWidth / 2;
double y1 = 10 + strokeWidth / 2;
double y2 = y1 + strokeWidth + 10;
double y3 = y1 + 50;
// draw a horizontal line
visitor.PaintLine(x1, y1, x3, y1);
// draw a rectangle
visitor.PaintRectangle(x1, y2, rectWidth, 100);
// draw an ellipse
visitor.PaintEllipse(x2, y2, ellipseWidth, 100);
// draw a polyline
NPolyline polyLine = new NPolyline(4);
polyLine.Add(new NPoint(x4, y2 + 90));
polyLine.Add(new NPoint(x4 + 60, y2));
polyLine.Add(new NPoint(x4 + 120, y2 + 90));
polyLine.Add(new NPoint(x4 + 180, y2));
visitor.PaintPolyline(polyLine);
// draw text
string dashStyleName = stroke.DashStyle.ToString();
visitor.ClearStroke();
visitor.SetFont(m_LabelFont);
visitor.SetFill(m_LabelFill);
NPaintTextRectSettings settings = new NPaintTextRectSettings();
visitor.PaintString(new NRectangle(x5, y3, 200, 50), dashStyleName, ref settings);
}
void PaintEllipse(NPaintVisitor paintVisitor, double w, double h)
{
NRadialGradientFill rgf = new NRadialGradientFill();
rgf.GradientStops.Add(new NGradientStop(0, NColor.Indigo));
rgf.GradientStops.Add(new NGradientStop(0.6f, NColor.SlateBlue));
rgf.GradientStops.Add(new NGradientStop(1, new NColor(NColor.Crimson, 30)));
paintVisitor.SetStroke(NColor.Black, 1);
paintVisitor.SetFill(rgf);
paintVisitor.PaintEllipse(0.2 * w, 0.3 * h, 0.6 * w, 0.4 * h);
}
void PaintEllipse(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.PaintEllipse(0.05 * w, 0.25 * h, 0.9 * w, 0.5 * h);
}