/// <summary>
/// Changes the pen style of the selected connection.
/// </summary>
private void ChangePenStyle()
{
//instantiate the style
LinePenStyle penStyle = new LinePenStyle();
//fetch the selected cap
LineCap cap;
if ((cap = GetRightCap()) == LineCap.Custom)
{
penStyle.EndCap = LineCap.Custom;
penStyle.CustomEndCap = LinePenStyle.GenerallizationCap;
}
else
{
penStyle.EndCap = cap;
}
if ((cap = GetLeftCap()) == LineCap.Custom)
{
penStyle.StartCap = LineCap.Custom;
penStyle.CustomStartCap = LinePenStyle.GenerallizationCap;
}
else
{
penStyle.StartCap = cap;
}
//fetch the other properties
penStyle.DashStyle = this.lineStylePicker.LineStyle;
penStyle.Width = this.lineWidthPicker.LineWidth;
penStyle.Color = this.lineColorPicker.Color;
//call the method; it will change the pe style of the selected entities
Application.Diagram.ChangeStyle(penStyle);
}
public GraphVisualizationInfoView()
{
InitializeComponent();
this.shapeInfoShapeMapping = new BidirectionalDictionary <IShapeInfo, IShape>();
this.connectionInfoConnectionMapping = new BidirectionalDictionary <IConnectionInfo, IConnection>();
this.connectionPenStyle = new LinePenStyle();
this.connectionPenStyle.EndCap = LineCap.ArrowAnchor;
PasteTool pasteTool = (PasteTool)this.Controller.Tools.Where(t => t.Name == ControllerBase.PasteToolName).FirstOrDefault();
CopyTool copyTool = (CopyTool)this.Controller.Tools.Where(t => t.Name == ControllerBase.CopyToolName).FirstOrDefault();
HeuristicLab.Netron.Controller controller = this.Controller as HeuristicLab.Netron.Controller;
if (controller != null)
{
if (pasteTool != null)
{
controller.RemoveTool(pasteTool);
}
if (copyTool != null)
{
controller.RemoveTool(copyTool);
}
}
}
/// <summary>
/// Updates pens and brushes.
/// <remarks>The .Net API allows you to simply set caps but the visual results are less than satisfactory, to say the least. So, there is
/// a hack here (unfortunately) which amounts to use two pen for one connection; one pen for the line and one for the (custom) cap. This is
/// the easiest way to have visible arrow which otherwise is miniaturistic. There is also a custom shift of the caps since the location is sometime
/// inappropriate; the arrow is drawn with the tip at the end of the connection while the diamond or circle caps are drawn with their center at the connection
/// end. So, altogether a lot of tweaking and I really find it regrettable that the out-of-the-box caps are not what they should be (besides some obvious bugs like
/// the 'not implemented' one if you try to fill a custom cap...).
/// </remarks>
/// </summary>
protected override void UpdatePaintingMaterial()
{
base.UpdatePaintingMaterial();
#region Hack
//see the code comments of the LinePenStyle to understand the problem and this hack
if (this.PenStyle is LinePenStyle)
{
LinePenStyle lp = PenStyle as LinePenStyle;
if (lp.StartCap == System.Drawing.Drawing2D.LineCap.NoAnchor)
{
leftPen = null;
}
else
{
if (lp.StartCap == System.Drawing.Drawing2D.LineCap.Custom)
{
//leftPen.StartCap = System.Drawing.Drawing2D.LineCap.Custom;
//AdjustableArrowCap ccap = new AdjustableArrowCap(lp.Width+2, lp.Width+2, true);
//leftPen.CustomStartCap = ccap;
leftPen = new Pen(lp.Color, lp.Width * generalizationration);
leftPen.CustomStartCap = LinePenStyle.GenerallizationCap; //change to something like lp.CustomStartCap if you have more than one custom cap
capsshift = standardsshift;
}
else if (lp.StartCap == LineCap.ArrowAnchor)
{
leftPen = new Pen(lp.Color, lp.Width * capsratio);
leftPen.StartCap = lp.StartCap;
capsshift = arrowshift;
}
else
{
leftPen = new Pen(lp.Color, lp.Width * capsratio);
leftPen.StartCap = lp.StartCap;
capsshift = standardsshift;
}
}
if (lp.EndCap == System.Drawing.Drawing2D.LineCap.NoAnchor)
{
rightPen = null;
}
else
{
if (lp.EndCap == System.Drawing.Drawing2D.LineCap.Custom)
{
//leftPen.StartCap = System.Drawing.Drawing2D.LineCap.Custom;
//AdjustableArrowCap ccap = new AdjustableArrowCap(lp.Width+2, lp.Width+2, true);
//leftPen.CustomStartCap = ccap;
//rightPen = new Pen(lp.Color, lp.Width * generalizationration);
//rightPen.CustomEndCap = lp.CustomEndCap;
//capsshift = standardsshift;
Pen.CustomEndCap = LinePenStyle.GenerallizationCap;
}
else if (lp.EndCap == LineCap.ArrowAnchor)
{
rightPen = new Pen(lp.Color, lp.Width * capsratio);
rightPen.EndCap = lp.EndCap;
capsshift = arrowshift;
}
else
{
rightPen = new Pen(lp.Color, lp.Width * capsratio);
rightPen.EndCap = lp.EndCap;
capsshift = standardsshift;
}
}
}
#endregion
}
