/// <summary>
/// Configures table editing specific parts.
/// </summary>
private void ConfigureTableEditing()
{
//Create a new TEIM instance which also allows drag and drop
tableEditorInputMode = new TableEditorInputMode
{
//Enable drag & drop
StripeDropInputMode = { Enabled = true },
//Maximal level for both reparent and drag and drop is 2
ReparentStripeHandler =
new ReparentStripeHandler {
MaxColumnLevel = 2, MaxRowLevel = 2
},
//Set the priority higher than for the handle input mode so that handles win if both gestures are possible
Priority = graphEditorInputMode.HandleInputMode.Priority + 1
};
//Add to GEIM
graphEditorInputMode.Add(tableEditorInputMode);
//Tooltip and context menu stuff for tables
graphEditorInputMode.ContextMenuItems = GraphItemTypes.Node;
graphEditorInputMode.PopulateItemContextMenu += graphEditorInputMode_PopulateItemContextMenu;
graphEditorInputMode.PopulateItemContextMenu += graphEditorInputMode_PopulateNodeContextMenu;
graphEditorInputMode.MouseHoverInputMode.QueryToolTip += MouseHoverInputMode_QueryToolTip;
// we don't provide candidates for the pool nodes, so tell the input mode not to create edges, if
// there aren't any candidates. That way, we can start marquee selection inside pool nodes
graphEditorInputMode.CreateEdgeInputMode.UseHitItemsCandidatesOnly = true;
graphEditorInputMode.AllowGroupingOperations = true;
}
/// <summary>
/// Registers the <see cref="GraphEditorInputMode"/> as the <see cref="CanvasControl.InputMode"/>
/// and initializes the marquee input mode that clears the area of the marquee rectangle.
/// </summary>
private void InitializeInputModes()
{
// enable undo/redo support
graphControl.Graph.SetUndoEngineEnabled(true);
// create an input mode to edit graphs
var editMode = new GraphEditorInputMode();
// create an input mode to clear the area of a marquee rectangle
// using the right mouse button
var marqueeClearInputMode = new MarqueeSelectionInputMode {
PressedRecognizer = MouseEventRecognizers.RightPressed,
DraggedRecognizer = MouseEventRecognizers.RightDragged,
ReleasedRecognizer = MouseEventRecognizers.RightReleased,
CancelRecognizer = KeyEventRecognizers.EscapePressed.Or(MouseEventRecognizers.LostCaptureDuringDrag),
Template = new MarqueeClearTemplate()
};
// handle dragging the marquee
marqueeClearInputMode.DragStarting += OnDragStarting;
marqueeClearInputMode.Dragged += OnDragged;
marqueeClearInputMode.DragCanceled += OnDragCanceled;
marqueeClearInputMode.DragFinished += OnDragFinished;
// add this mode to the edit mode
editMode.Add(marqueeClearInputMode);
// and install the edit mode into the canvas
graphControl.InputMode = editMode;
}
/// <summary>
/// Initializes the graph and the input mode.
/// </summary>
protected override void OnLoad(EventArgs e)
{
DecorateModelItemLookupForCustomSnappingBehaviour();
var graphSnapContext = CreateGraphSnapContext();
var labelSnapContext = CreateLabelSnapContext();
InitializeGrid(graphSnapContext);
// Initialize two free snap lines that are also visualized in the GraphCanvasComponent
AdditionalSnapLineVisualCreators = new List <AdditionalSnapLineVisualCreator>();
AddAdditionalSnapLineVisualCreator(new PointD(0, -70), new PointD(500, -70));
AddAdditionalSnapLineVisualCreator(new PointD(-230, -50), new PointD(-230, 400));
// Initialize the input mode for this demo
var graphEditorInputMode = new GraphEditorInputMode
{
SnapContext = graphSnapContext,
LabelSnapContext = labelSnapContext
};
// add an input mode that allows to move the custom AdditionalSnapLines
graphEditorInputMode.Add(new AdditionalSnapLineMoveInputMode(this)
{
Priority = -50
});
GraphControl.InputMode = graphEditorInputMode;
InitializeGraphDefaults();
// Initialize the graph by reading it from a file.
ReadGraph("Resources\\CustomSnapping.graphml");
}
private void OnWindowLoaded(object sender, RoutedEventArgs e)
{
// Set a nicer node style and create the sample graph
GraphControl.Graph.NodeDefaults.Style = new ShinyPlateNodeStyle {
Brush = Brushes.Orange
};
GraphEditorInputMode.Add(lensInputMode);
InitializeGraph(GraphControl.Graph);
}
/// <summary>
/// Registers the <see cref="GraphEditorInputMode"/> as the <see cref="CanvasControl.InputMode"/>
/// and initializes the input mode for dropping components.
/// </summary>
private void InitializeInputModes()
{
// create a GraphEditorInputMode instance
var editMode = new GraphEditorInputMode();
GraphControl.InputMode = editMode;
// add the input mode to drop components
var graphDropInputMode = new ComponentDropInputMode();
graphDropInputMode.DragEntered += OnDragStarting;
graphDropInputMode.DragOver += OnDragged;
graphDropInputMode.ItemCreated += OnDragFinished;
graphDropInputMode.DragLeft += OnDragCanceled;
editMode.Add(graphDropInputMode);
}
private void OnLoaded(object sender, EventArgs e)
{
// enable undo engine
graphControl.Graph.SetUndoEngineEnabled(true);
graphEditorInputMode = new GraphEditorInputMode();
// prepare orthogonal edge editing
graphEditorInputMode.OrthogonalEdgeEditingContext = new OrthogonalEdgeEditingContext {
Enabled = false
};
// allow grouping operations
graphEditorInputMode.AllowGroupingOperations = true;
// prepare snapping
graphEditorInputMode.SnapContext = new GraphSnapContext {
Enabled = false
};
graphControl.InputMode = graphEditorInputMode;
// set minimum and maximum sizes for all non-group nodes (group nodes should be able to grow larger so they can
// contain arbitrary numbers of nodes)
var sizeConstraintProvider = new NodeSizeConstraintProvider(new SizeD(10, 10), new SizeD(100, 100));
graphControl.Graph
.GetDecorator()
.NodeDecorator
.SizeConstraintProviderDecorator
.SetFactory(node => !graphControl.Graph.IsGroupNode(node), node => sizeConstraintProvider);
// add a custom input mode to the GraphEditorInputMode that shows a single set of handles when multiple nodes are selected
nodeGroupResizingInputMode = new NodeGroupResizingInputMode {
Margins = new InsetsD(10),
Mode = NodeGroupResizing.ResizeMode.Resize
};
graphEditorInputMode.Add(nodeGroupResizingInputMode);
// load sample graph
graphControl.ImportFromGraphML("Resources/sampleGraph.graphml");
graphControl.FitContent();
graphControl.Graph.GetUndoEngine().Clear();
// set style defaults
graphControl.Graph.NodeDefaults.Style = new ShinyPlateNodeStyle {
Brush = Brushes.Orange
};
Color groupNodeColor = Color.FromArgb(255, 214, 229, 248);
var groupNodeDefaults = graphControl.Graph.GroupNodeDefaults;
groupNodeDefaults.Style = new PanelNodeStyle {
Color = groupNodeColor,
Insets = new InsetsD(5, 18, 5, 5),
LabelInsetsColor = groupNodeColor,
};
groupNodeDefaults.Labels.Style = new DefaultLabelStyle {
StringFormat = { Alignment = StringAlignment.Far }
};
groupNodeDefaults.Labels.LayoutParameter = InteriorStretchLabelModel.North;
cmbResizeMode.SelectedIndex = 0;
}
