public void CreateCustomBridge(IRenderContext context, GeneralPath path, PointD start, PointD end, double gapLength)
{
// first finish the last segment
path.LineTo(start);
// then calculate the gap
var vectorLength = gapLength;
if (vectorLength > 1)
{
// some helper vectors first
var delta = end - start;
var rightVector = delta / vectorLength;
var upVector = new PointD(rightVector.Y, -rightVector.X);
// get the height from the context
double height = GetBridgeHeight(context);
// determine bending for our arc
double arc = 3;
// now draw two arcs at the end and the start of the segment
path.MoveTo(start + upVector * height - rightVector * arc);
path.QuadTo(start + rightVector * arc, start + upVector * -height - rightVector * arc);
path.MoveTo(end + rightVector * arc + upVector * height);
path.QuadTo(end - rightVector * arc, end + upVector * -height + rightVector * arc);
// finally make sure that the edge continues at the right location
path.MoveTo(end);
}
else
{
// for very short gaps, we use a trivial rendering
path.LineTo(start);
path.MoveTo(end);
}
}
public override Visual CreateVisual(IRenderContext context)
{
VisualGroup container = new VisualGroup();
var bounds = Bounds;
var width = bounds.Width;
var height = bounds.Height;
var path = new GeneralPath();
path.MoveTo(0, TopLeftRadius);
path.QuadTo(0, 0, TopLeftRadius, 0);
path.LineTo(width - TopRightRadius, 0);
path.QuadTo(width, 0, width, TopRightRadius);
path.LineTo(width, height - BottomRightRadius);
path.QuadTo(width, height, width - BottomRightRadius, height);
path.LineTo(BottomLeftRadius, height);
path.QuadTo(0, height, 0, height - BottomRightRadius);
path.Close();
var pathVisual = path.CreatePath(Brush, Pen, new Matrix2D(), FillMode.Always);
container.Add(pathVisual);
container.SetRenderDataCache(new PathIconState(width, height, Pen, Brush));
container.SetCanvasArrangeRect(bounds.ToRectD());
return(container);
}
/// <summary>
/// Creates an <see cref="IVisual"/> which renders the label.
/// </summary>
/// <remarks>
/// Adds separate visuals for background and text in a VisualGroup.
/// Delegates to method <see cref="LabelStyleBase{TVisual}.GetTransform"/>
/// to get a valid transform for the label.
/// </remarks>
/// <param name="context">The Render Context.</param>
/// <param name="label">The label to render.</param>
/// <returns>A visual which renders the label.</returns>
protected override VisualGroup CreateVisual(IRenderContext context, ILabel label)
{
var layout = label.GetLayout();
// don't render invisible labels
if (layout.Width < 0 || layout.Height < 0)
{
return(null);
}
var group = new VisualGroup();
// convert to convenient coordinate space
group.Transform = GetTransform(context, layout, true);
// Draw the label background as a rounded rectangle
GeneralPath gp = new GeneralPath(10);
double xRad = layout.Width / 4;
double yRad = layout.Height / 10;
gp.MoveTo(0, yRad);
gp.QuadTo(0, 0, xRad, 0);
gp.LineTo(layout.Width - xRad, 0);
gp.QuadTo(layout.Width, 0, layout.Width, yRad);
gp.LineTo(layout.Width, layout.Height - yRad);
gp.QuadTo(layout.Width, layout.Height, layout.Width - xRad, layout.Height);
gp.LineTo(xRad, layout.Height);
gp.QuadTo(0, layout.Height, 0, layout.Height - yRad);
gp.Close();
var pathVisual = new GeneralPathVisual(gp)
{
Brush = new SolidBrush(Color.FromArgb(255, 240, 248, 255)), Pen = Pens.SkyBlue
};
group.Add(pathVisual);
// Draw the label's text
if (context.Zoom >= buttonZoomThreshold)
{
// draw the action button
group.Add(new ImageVisual {
Image = Resources.edit_label, Rectangle = new RectD(layout.Width - (inset + buttonWidth), inset, buttonWidth, layout.Height - inset * 2)
});
group.Add(new TextVisual {
Text = label.Text, Font = Font, Brush = Brushes.Black, Location = PointD.Origin
});
}
else
{
group.Add(new TextVisual {
Text = label.Text,
Font = Font,
Brush = Brushes.Black,
Location = new PointD((buttonWidth + 2 * inset) * 0.5, 0)
});
}
return(group);
}
static LogicGateNodeStyle()
{
// path for AND nodes
AndOutlinePath = new GeneralPath();
AndOutlinePath.MoveTo(0.6, 0);
AndOutlinePath.LineTo(0.1, 0);
AndOutlinePath.LineTo(0.1, 1);
AndOutlinePath.LineTo(0.6, 1);
AndOutlinePath.QuadTo(0.8, 1.0, 0.8, 0.5);
AndOutlinePath.QuadTo(0.8, 0.0, 0.6, 0);
// path for OR nodes
OrOutlinePath = new GeneralPath();
OrOutlinePath.MoveTo(0.6, 0);
OrOutlinePath.LineTo(0.1, 0);
OrOutlinePath.QuadTo(0.3, 0.5, 0.1, 1);
OrOutlinePath.LineTo(0.6, 1);
OrOutlinePath.QuadTo(0.8, 1.0, 0.8, 0.5);
OrOutlinePath.QuadTo(0.8, 0.0, 0.6, 0);
// path for NAND nodes
NandOutlinePath = new GeneralPath();
NandOutlinePath.MoveTo(0.6, 0);
NandOutlinePath.LineTo(0.1, 0);
NandOutlinePath.LineTo(0.1, 1);
NandOutlinePath.LineTo(0.6, 1);
NandOutlinePath.QuadTo(0.8, 1.0, 0.8, 0.5);
NandOutlinePath.QuadTo(0.8, 0.0, 0.6, 0);
NandOutlinePath.AppendEllipse(new RectD(0.8, 0.4, 0.1, 0.2), false);
// path for NOR nodes
NorOutlinePath = new GeneralPath();
NorOutlinePath.MoveTo(0.6, 0);
NorOutlinePath.LineTo(0.1, 0);
NorOutlinePath.QuadTo(0.3, 0.5, 0.1, 1);
NorOutlinePath.LineTo(0.6, 1);
NorOutlinePath.QuadTo(0.8, 1.0, 0.8, 0.5);
NorOutlinePath.QuadTo(0.8, 0.0, 0.6, 0);
NorOutlinePath.AppendEllipse(new RectD(0.8, 0.4, 0.1, 0.2), false);
// path for NOT nodes
NotOutlinePath = new GeneralPath();
NotOutlinePath.MoveTo(0.8, 0.5);
NotOutlinePath.LineTo(0.1, 0);
NotOutlinePath.LineTo(0.1, 1);
NotOutlinePath.LineTo(0.8, 0.5);
NotOutlinePath.AppendEllipse(new RectD(0.8, 0.4, 0.1, 0.2), false);
}
private static GeneralPath CreatePath(IOrientedRectangle layout)
{
GeneralPath gp = new GeneralPath(10);
double xRad = layout.Width / 4;
double yRad = layout.Height / 10;
gp.MoveTo(0, yRad);
gp.QuadTo(0, 0, xRad, 0);
gp.LineTo(layout.Width - xRad, 0);
gp.QuadTo(layout.Width, 0, layout.Width, yRad);
gp.LineTo(layout.Width, layout.Height - yRad);
gp.QuadTo(layout.Width, layout.Height, layout.Width - xRad, layout.Height);
gp.LineTo(xRad, layout.Height);
gp.QuadTo(0, layout.Height, 0, layout.Height - yRad);
gp.Close();
return(gp);
}
/// <summary>
/// Creates an <see cref="IVisual"/> which renders the label.
/// </summary>
/// <remarks>
/// Adds separate visuals for background and text in a VisualGroup.
/// Delegates to method <see cref="LabelStyleBase{TVisual}.GetTransform"/>
/// to get a valid transform for the label.
/// </remarks>
/// <param name="context">The Render Context.</param>
/// <param name="label">The label to render.</param>
/// <returns>A visual which renders the label.</returns>
protected override VisualGroup CreateVisual(IRenderContext context, ILabel label)
{
var layout = label.GetLayout();
// don't render invisible labels
if (layout.Width < 0 || layout.Height < 0)
{
return(null);
}
var group = new VisualGroup();
// convert to convenient coordinate space
group.Transform = GetTransform(context, layout, true);
// Draw the label background as a rounded rectangle
GeneralPath gp = new GeneralPath(10);
double xRad = layout.Width / 4;
double yRad = layout.Height / 10;
gp.MoveTo(0, yRad);
gp.QuadTo(0, 0, xRad, 0);
gp.LineTo(layout.Width - xRad, 0);
gp.QuadTo(layout.Width, 0, layout.Width, yRad);
gp.LineTo(layout.Width, layout.Height - yRad);
gp.QuadTo(layout.Width, layout.Height, layout.Width - xRad, layout.Height);
gp.LineTo(xRad, layout.Height);
gp.QuadTo(0, layout.Height, 0, layout.Height - yRad);
gp.Close();
var pathVisual = new GeneralPathVisual(gp)
{
Brush = new SolidBrush(Color.FromArgb(255, 155, 226, 255)), Pen = Pens.SkyBlue
};
group.Add(pathVisual);
// Draw the label's text
group.Add(new TextVisual {
Text = label.Text,
Font = Font,
Brush = Brushes.Black,
Location = PointD.Origin
});
return(group);
}
protected override GeneralPath GetOutline(INode node)
{
// Create a rounded rectangle path
var layout = node.Layout.ToRectD();
var path = new GeneralPath(12);
var x = layout.X;
var y = layout.Y;
var w = layout.Width;
var h = layout.Height;
var arcX = Math.Min(w * 0.5, 5);
var arcY = Math.Min(h * 0.5, 5);
path.MoveTo(x, y + arcY);
path.QuadTo(x, y, x + arcX, y);
path.LineTo(x + w - arcX, y);
path.QuadTo(x + w, y, x + w, y + arcY);
path.LineTo(x + w, y + h - arcY);
path.QuadTo(x + w, y + h, x + w - arcX, y + h);
path.LineTo(x + arcX, y + h);
path.QuadTo(x, y + h, x, y + h - arcY);
path.Close();
return(path);
}
public override IVisual CreateVisual(IRenderContext context)
{
var bounds = Bounds;
var width = bounds.Width;
var height = bounds.Height;
var path = new GeneralPath();
path.MoveTo(0, TopLeftRadius);
path.QuadTo(0, 0, TopLeftRadius, 0);
path.LineTo(width - TopRightRadius, 0);
path.QuadTo(width, 0, width, TopRightRadius);
path.LineTo(width, height - BottomRightRadius);
path.QuadTo(width, height, width - BottomRightRadius, height);
path.LineTo(BottomLeftRadius, height);
path.QuadTo(0, height, 0, height - BottomRightRadius);
path.Close();
return(new GeneralPathVisual(path)
{
Brush = Brush, Pen = Pen, Transform = new Matrix(1, 0, 0, 1, (float)Bounds.X, (float)Bounds.Y)
});
}