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);
}
void PaintGripper(NPaintVisitor pv)
{
if (m_ArmGripperPath == null)
{
m_ArmGripperPath = new NGraphicsPath();
m_ArmGripperPath.StartFigure(0, -6);
m_ArmGripperPath.LineTo(20, -6);
m_ArmGripperPath.LineTo(20, -14);
m_ArmGripperPath.LineTo(30, -14);
m_ArmGripperPath.LineTo(30, 14);
m_ArmGripperPath.LineTo(20, 14);
m_ArmGripperPath.LineTo(20, 6);
m_ArmGripperPath.LineTo(0, 6);
m_ArmGripperPath.CloseFigure();
m_ArmGripperPath.StartFigure(30, -14);
m_ArmGripperPath.LineTo(40, -14);
m_ArmGripperPath.LineTo(50, -10);
m_ArmGripperPath.LineTo(50, -7);
m_ArmGripperPath.LineTo(30, -7);
m_ArmGripperPath.CloseFigure();
m_ArmGripperPath.StartFigure(30, 14);
m_ArmGripperPath.LineTo(40, 14);
m_ArmGripperPath.LineTo(50, 10);
m_ArmGripperPath.LineTo(50, 7);
m_ArmGripperPath.LineTo(30, 7);
m_ArmGripperPath.CloseFigure();
}
pv.PaintPath(m_ArmGripperPath);
}
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 PaintPath(NPaintVisitor paintVisitor, double w, double h)
{
NGraphicsPath path = new NGraphicsPath();
path.StartFigure(0.1 * w, 0.1 * h);
path.LineTo(0.7 * w, 0.2 * h);
path.CubicBezierTo(0.9 * w, 0.9 * h, 1 * w, 0.4 * h, 0.5 * w, 0.7 * h);
path.LineTo(0.2 * w, 0.8 * h);
path.CubicBezierTo(0.1 * w, 0.1 * h, 0.3 * w, 0.7 * h, 0.4 * w, 0.6 * h);
path.CloseFigure();
paintVisitor.PaintPath(path);
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
private void OnCanvasPrePaint(NCanvasPaintEventArgs args)
{
NCanvas canvas = args.TargetNode as NCanvas;
if (canvas == null)
{
return;
}
NPaintVisitor paintVisitor = args.PaintVisitor;
NRectangle contentEge = canvas.GetContentEdge();
// create the text bounds
double width = contentEge.Width * m_WidthPercentUpDown.Value / 100.0;
double height = contentEge.Height * m_HeightPercentUpDown.Value / 100.0;
NPoint center = contentEge.Center;
NRectangle textBounds = new NRectangle(center.X - width / 2.0, center.Y - height / 2.0, width, height);
// create the settings
NPaintTextRectSettings settings = new NPaintTextRectSettings();
settings.SingleLine = m_SingleLineCheckBox.Checked;
settings.WrapMode = (ENTextWrapMode)m_WrapModeCombo.SelectedIndex;
settings.HorzAlign = (ENTextHorzAlign)m_HorizontalAlignmentCombo.SelectedIndex;
settings.VertAlign = (ENTextVertAlign)m_VerticalAlignmentCombo.SelectedIndex;
// create the text
StringBuilder builder = new StringBuilder();
builder.AppendLine("Paint text at bounds [" + textBounds.X.ToString("0.") + ", " + textBounds.Y.ToString("0.") + "]");
builder.AppendLine("Horizontal Alignment [" + settings.HorzAlign.ToString() + "]");
builder.AppendLine("Vertical Alignment [" + settings.VertAlign.ToString() + "]");
// paint the bounding box
paintVisitor.ClearStyles();
paintVisitor.SetFill(NColor.LightBlue);
paintVisitor.PaintRectangle(textBounds);
// init font and fill
paintVisitor.SetFill(NColor.Black);
NFont font = new NFont(NFontDescriptor.DefaultSansFamilyName, 10);
NGraphicsPath path = font.GetTextPath(builder.ToString(), textBounds, this.OwnerDocument, ref settings);
paintVisitor.PaintPath(path);
}
void PaintBase(NPaintVisitor pv)
{
if (m_ArmBasePath == null)
{
m_ArmBasePath = new NGraphicsPath();
m_ArmBasePath.StartFigure(0, 0);
m_ArmBasePath.LineTo(-40, 0);
m_ArmBasePath.LineTo(-40, 50);
m_ArmBasePath.LineTo(25, 50);
m_ArmBasePath.LineTo(25, 20);
m_ArmBasePath.CloseFigure();
}
pv.PaintPath(m_ArmBasePath);
}
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);
}