void SetDragDecorator(IViewerObject obj)
{
var dNode = obj as DNode;
if (dNode != null)
{
draggedObjectOriginalColors[dNode] = dNode.DrawingNode.Attr.Color;
dNode.DrawingNode.Attr.Color = Color.Magenta;
gViewer.Invalidate(obj);
}
}
private void selectedEntityColor_Click(object sender, EventArgs e)
{
if (entityColorDialog.ShowDialog() == DialogResult.OK)
{
//FreezeGraphLayout();
System.Drawing.Color c = entityColorDialog.Color;
if (this.selectedObject is Node)
{
//(this.selectedObject as Node).Attr.LineWidth -= 1;
(this.selectedObject as Node).Attr.Color = new MSAGLColor(c.A, c.R, c.G, c.B);
viewer.Invalidate();
//ResumeGraphLayout();
}
else if (this.selectedObject is Edge)
{
(this.selectedObject as Edge).Attr.Color = new MSAGLColor(c.A, c.R, c.G, c.B);
//ResumeGraphLayout();
}
else if (this.selectedObject is Microsoft.Msagl.Drawing.Label)
{
((this.selectedObject as Microsoft.Msagl.Drawing.Label).Owner as Edge).Attr.Color = new MSAGLColor(c.A, c.R, c.G, c.B);
}
this.viewer.Invalidate();
//this.reloadGraph_Click(this.reloadGraph, null);
}
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
Keys key = e.KeyCode;
if (key == Keys.T)
{
if (oe == null)
{
return;
}
if (oe.Attr.ArrowheadAtTarget == ArrowStyle.None)
{
oe.Attr.ArrowheadAtTarget = ArrowStyle.ODiamond;
}
else
{
oe.Attr.ArrowheadAtTarget = ArrowStyle.None;
}
gViewer.Invalidate();
}
else if (key == Keys.N)
{
_useOpMode = UserOprationMode.AddNode;
}
}
void gViewer_ObjectUnderMouseCursorChanged(object sender, ObjectUnderMouseCursorChangedEventArgs e)
{
selectedObject = e.OldObject != null ? e.OldObject.DrawingObject : null;
if (selectedObject != null)
{
RestoreSelectedObjAttr();
gViewer.Invalidate(e.OldObject);
selectedObject = null;
}
if (gViewer.SelectedObject == null)
{
infoLabel.Text = "No object under the mouse";
gViewer.SetToolTip(toolTip, "");
}
else
{
selectedObject = gViewer.SelectedObject;
var edge = selectedObject as Edge;
if (edge != null)
{
selectedObjectAttr = edge.Attr.Clone();
edge.Attr.Color = Color.Blue;
gViewer.Invalidate(e.NewObject);
// here we can use e.Attr.Id or e.UserData to get back to the user data
gViewer.SetToolTip(toolTip, String.Format("edge from {0} to {1}", edge.Source, edge.Target));
}
else if (selectedObject is Microsoft.Msagl.Drawing.Node)
{
selectedObjectAttr = (gViewer.SelectedObject as Microsoft.Msagl.Drawing.Node).Attr.Clone();
(selectedObject as Microsoft.Msagl.Drawing.Node).Attr.Color = Color.Green;
// // here you can use e.Attr.Id to get back to your data
gViewer.SetToolTip(toolTip,
String.Format("node {0}",
(selectedObject as Microsoft.Msagl.Drawing.Node).Attr.Id));
gViewer.Invalidate(e.NewObject);
}
infoLabel.Text = selectedObject.ToString();
}
}
/// <summary>
/// Changes an edge's label and updates the display
/// </summary>
/// <param name="e">The edge whose label has to be changed</param>
/// <param name="newLabel">The new label</param>
internal void RelabelEdge(Edge e, string newLabel)
{
if (e.Label == null)
{
e.Label = new Label(newLabel);
}
else
{
e.Label.Text = newLabel;
}
gViewer.SetEdgeLabel(e, e.Label);
e.Label.GeometryLabel.InnerPoints = new List <Point>();
var ep = new EdgeLabelPlacement(gViewer.Graph.GeometryGraph);
ep.Run();
gViewer.Graph.GeometryGraph.UpdateBoundingBox();
gViewer.Invalidate();
}
private void Gviewer_ObjectUnderMouseCursorChanged(object sender, ObjectUnderMouseCursorChangedEventArgs e)
{
RestorePreviouslyHoverObjectColor(e.OldObject);
if (e.OldObject != null)
{
gviewer.Invalidate(e.OldObject);
}
if (gviewer.ObjectUnderMouseCursor == null)
{
gviewer.SetToolTip(viewerToolTip, "");
return;
}
selectedObjectMouseHover = gviewer.ObjectUnderMouseCursor;
DrawingObject currentDrawingObject = selectedObjectMouseHover.DrawingObject;
string selectedObjetLabel = null;
if (currentDrawingObject is Edge)
{
var edge = currentDrawingObject as Edge;
edge.Attr.Color = Color.Blue;
selectedObjetLabel = edge.Attr.Id; // Attr.Id holds the relationship information
}
else if (currentDrawingObject is Node)
{
var node = currentDrawingObject as Node;
node.Attr.Color = Color.Green;
string entityName = node.Attr.Id;
selectedObjetLabel = entityRelations.GetEREntitieAttributesByEntityName(entityName)?.FirstOrDefault <EREntityAttribute>()?.Description;
}
else
{
return;
}
gviewer.SetToolTip(viewerToolTip, selectedObjetLabel);
if (e.NewObject != null)
{
gviewer.Invalidate(e.NewObject);
}
}
void GViewerOnMouseMove(Edge edge, string value)
{
if (edge.Label == null)
{
return;
}
edge.Label.Text = value;
var rect = edge.Label.BoundingBox;
var font = new Font(edge.Label.FontName, (int)edge.Label.FontSize);
StringMeasure.MeasureWithFont(edge.Label.Text, font, out double width, out double height);
if (width <= 0)
{
StringMeasure.MeasureWithFont("a", font, out width, out height);
}
edge.Label.Width = width;
edge.Label.Height = height;
rect.Add(edge.Label.BoundingBox);
gViewer.Invalidate(gViewer.MapSourceRectangleToScreenRectangle(rect));
}
private void selectNode(Node node)
{
if (previouslySelectedNode != null || highlightedNodes.Count != 0)
{
unselectNode();
}
if (node != null)
{
// format new one
node.Attr.Color = selectionColor;
node.Attr.LineWidth = 5;
node.Label.FontColor = Color.White;
// plus all parents
foreach (var sourceNode in node.InEdges.Select(inEdge => inEdge.SourceNode))
{
highlightNode(sourceNode);
}
previouslySelectedNode = node;
_z3AxiomProfiler.SetInfoPanel((Instantiation)node.UserData);
}
_viewer.Invalidate();
}
private void selectNode(string newSelectedNodeID)
{
//If there is allready a selected node then "deselect" it
if (_selectedNode != null)
{
_selectedNode.Attr.Color = Color.Black;
}
_selectedNode = _gViewer.Graph.FindNode(newSelectedNodeID);
//save new selected node
if (_selectedNode != null)
{
_selectedNode.Attr.Color = Color.Red;
//and "select" it
}
_gViewer.CenterToPoint(_selectedNode.BoundingBox.Center);
_gViewer.Invalidate();
}
void gViewer_ObjectUnderMouseCursorChanged(object sender,
ObjectUnderMouseCursorChangedEventArgs e)
{
if (e.OldObject != null)
{
selectedObject = e.OldObject.DrawingObject;
}
else
{
selectedObject = null;
}
selectedObject = gViewer.SelectedObject;
Edge edge = selectedObject as Edge;
if (edge != null)
{
this.gViewer.SetToolTip(toolTip1, String.Format(edge.LabelText));
}
gViewer.Invalidate();
}
/// <summary>
/// Create form with given graph
/// </summary>
public MainForm()
{
viewer.MouseClick += ViewerMouseClicked;
InitializeComponent();
viewer.EdgeAdded += ViewerOnEdgeAdded;
viewer.Graph = graph.Graph;
viewer.PanButtonPressed = true;
viewer.MouseMove += (sender, args) =>
{
viewer.Graph.GeometryGraph.UpdateBoundingBox();
viewer.Invalidate();
};
viewer.ToolBarIsVisible = false;
viewer.MouseDown += ViewerOnMouseDown;
viewer.MouseWheel += (sender, args) => viewer.ZoomF += args.Delta * SystemInformation.MouseWheelScrollLines / 4000f;
SuspendLayout();
viewer.Dock = DockStyle.Fill;
mainLayout.Controls.Add(viewer, 0, 0);
ResumeLayout();
InitPalette();
}
