private void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
// Create a transform matrix for the graphics path
NMatrix matrix = NMatrix.CreateRotationMatrix(m_PathAngle * NAngle.Degree2Rad, NPoint.Zero);
matrix.Translate(m_PathPositionX, m_PathPositionY);
// Create a graphics path containing a rectangle and transform it
NGraphicsPath path = new NGraphicsPath();
path.AddRectangle(0, 0, RectWidth, RectHeight);
path.Transform(matrix);
// Paint the graphics path
NPaintVisitor pv = args.PaintVisitor;
pv.SetStroke(m_Stroke);
pv.SetFill(m_ImageFill);
pv.PaintPath(path);
// Paint a border around the canvas
pv.ClearFill();
pv.SetStroke(NColor.Black, 1);
pv.PaintRectangle(0, 0, canvas.Width, canvas.Height);
}
private void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
NPaintVisitor pv = args.PaintVisitor;
pv.ClearStyles();
if (m_PaintImageInRectangle)
{
pv.PaintImage(NResources.Image_JpegSuite_q080_jpg.ImageSource, new NRectangle(m_PosX, m_PosY, m_Width, m_Height));
}
else
{
pv.PaintImage(NResources.Image_JpegSuite_q080_jpg.ImageSource, new NPoint(m_PosX, m_PosY));
}
// paint a border around the canvas
pv.SetStroke(NColor.Black, 1);
pv.PaintRectangle(0, 0, canvas.Width, canvas.Height);
}
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 PaintTriangle(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.SetStroke(NColor.Black, 2);
paintVisitor.SetFill(NColor.Crimson);
NPoint p1 = new NPoint(0.5 * w, 0.2 * h);
NPoint p2 = new NPoint(0.8 * w, 0.8 * h);
NPoint p3 = new NPoint(0.2 * w, 0.7 * h);
paintVisitor.PaintTriangle(p1, p2, p3);
}
private void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
NPaintVisitor pv = args.PaintVisitor;
int count = m_Values.Length;
// calculate total value
double total = 0;
for (int i = 0; i < count; i++)
{
total += m_Values[i];
}
// paint the pie slices
double beginAngle = 0;
pv.ClearStyles();
for (int i = 0; i < count; i++)
{
double sweepAngle = NMath.PI2 * (m_Values[i] / total);
NGraphicsPath path = new NGraphicsPath();
path.AddPie(0.1 * W, 0.1 * H, 0.8 * W, 0.8 * H, beginAngle, sweepAngle);
if (i == 0)
{
const double detachment = 20;
double midAngle = beginAngle + sweepAngle / 2;
double dx = Math.Cos(midAngle) * detachment;
double dy = Math.Sin(midAngle) * detachment;
path.Translate(dx, dy);
}
pv.SetFill(m_ColorFills[i]);
pv.PaintPath(path);
beginAngle += sweepAngle;
}
// paint a border around the canvas
pv.ClearFill();
pv.SetStroke(NColor.Black, 1);
pv.PaintRectangle(0, 0, canvas.Width, canvas.Height);
}
void PaintQuadrangle(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.SetStroke(NColor.Black, 2);
paintVisitor.SetFill(new NColor(NColor.Crimson, 128));
NPoint p1 = new NPoint(0.3 * w, 0.2 * h);
NPoint p2 = new NPoint(0.6 * w, 0.2 * h);
NPoint p3 = new NPoint(0.8 * w, 0.8 * h);
NPoint p4 = new NPoint(0.2 * w, 0.6 * h);
paintVisitor.PaintQuadrangle(p1, p2, p3, p4);
}
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 PaintRectangle(NPaintVisitor paintVisitor, double w, double h)
{
NLinearGradientFill lgf = new NLinearGradientFill();
lgf.GradientStops.Add(new NGradientStop(0, NColor.Indigo));
lgf.GradientStops.Add(new NGradientStop(0.5f, NColor.SlateBlue));
lgf.GradientStops.Add(new NGradientStop(1, new NColor(NColor.Crimson, 30)));
paintVisitor.SetStroke(NColor.Black, 1);
paintVisitor.SetFill(lgf);
paintVisitor.PaintRectangle(0.2 * w, 0.3 * h, 0.6 * w, 0.4 * h);
}
void PaintPolyline(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.SetStroke(NColor.Black, 2);
NPolyline polyline = new NPolyline(5);
polyline.Add(0.2 * w, 0.2 * h);
polyline.Add(0.4 * w, 0.3 * h);
polyline.Add(0.3 * w, 0.5 * h);
polyline.Add(0.4 * w, 0.7 * h);
polyline.Add(0.8 * w, 0.8 * h);
paintVisitor.PaintPolyline(polyline);
}
void PaintPath(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.SetStroke(new NColor(0, 0, 0, 160), 6);
paintVisitor.SetFill(new NColor(NColor.GreenYellow, 128));
NGraphicsPath path = new NGraphicsPath();
path.StartFigure(0.2 * w, 0.2 * h);
path.LineTo(0.7 * w, 0.3 * h);
path.CubicBezierTo(0.8 * w, 0.8 * h, 1 * w, 0.4 * h, 0.5 * w, 0.7 * h);
path.LineTo(0.3 * w, 0.7 * h);
path.CubicBezierTo(0.2 * w, 0.2 * h, 0.3 * w, 0.7 * h, 0.4 * w, 0.6 * h);
path.CloseFigure();
paintVisitor.PaintPath(path);
}
void PaintPolygon(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.SetStroke(new NColor(0, 0, 0, 160), 6);
paintVisitor.SetFill(NColor.GreenYellow);
NPolygon polygon = new NPolygon(6);
polygon.Add(0.3 * w, 0.2 * h);
polygon.Add(0.6 * w, 0.2 * h);
polygon.Add(0.5 * w, 0.4 * h);
polygon.Add(0.8 * w, 0.8 * h);
polygon.Add(0.3 * w, 0.7 * h);
polygon.Add(0.2 * w, 0.4 * h);
paintVisitor.PaintPolygon(polygon, ENFillRule.EvenOdd);
}
void PaintLine(NPaintVisitor paintVisitor, double w, double h)
{
paintVisitor.SetStroke(NColor.Black, 2);
paintVisitor.PaintLine(0.2 * w, 0.8 * h, 0.7 * w, 0.2 * h);
}
private void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
canvas.HorizontalPlacement = ENHorizontalPlacement.Center;
canvas.VerticalPlacement = ENVerticalPlacement.Center;
NPaintVisitor pv = args.PaintVisitor;
pv.ClearStyles();
pv.SetStroke(NColor.MidnightBlue, 1);
pv.SetFill(NColor.LightSteelBlue);
NMatrix m1 = NMatrix.Identity;
m1.Rotate(NAngle.Degree2Rad * m_Angle1);
NMatrix m2 = NMatrix.Identity;
m2.Rotate(NAngle.Degree2Rad * m_Angle2);
m2.Translate(100, 0);
NMatrix m3 = NMatrix.Identity;
m3.Rotate(NAngle.Degree2Rad * m_Angle3);
m3.Translate(100, 0);
NRegion clipRegion = NRegion.FromRectangle(m_ClipRect);
pv.PushClip(clipRegion);
pv.PushTransform(new NMatrix(m_PositionX, 0));
PaintVerticalBar(pv);
pv.PushTransform(new NMatrix(0, m_PositionY));
PaintBase(pv);
pv.PushTransform(m1);
PaintLink(pv, 20);
PaintJoint(pv, 20);
pv.PushSnapToPixels(false);
pv.PushTransform(m2);
PaintLink(pv, 16);
PaintJoint(pv, 16);
pv.PushTransform(m3);
PaintGripper(pv);
PaintJoint(pv, 12);
pv.PopTransform(); // m3
pv.PopTransform(); // m2
pv.PopTransform(); // m1
pv.PopTransform(); // mTY
pv.PopTransform(); // mTX
pv.PopSnapToPixels();
pv.PopClip();
// paint a border around the clip rectangle
pv.ClearFill();
pv.SetStroke(NColor.Red, 1);
pv.PaintRectangle(m_ClipRect);
// paint a border around the canvas
pv.SetStroke(NColor.Black, 1);
pv.PaintRectangle(0, 0, canvas.Width, canvas.Height);
}