zhusenlin/aistudio-wpf-diagram
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EnableSnapping完成

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This commit is contained in:
艾竹
2023-01-26 20:05:21 +08:00
parent b5867c148e
commit 04db0ef13b
14 changed files with 392 additions and 32 deletions
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124
AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
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@@ -17,8 +17,20 @@ namespace AIStudio.Wpf.DiagramDesigner
{
public class DesignerCanvas : Canvas
{
private IDiagramViewModel _viewModel { get { return DataContext as IDiagramViewModel; } }
private IDiagramServiceProvider _service { get { return DiagramServicesProvider.Instance.Provider; } }
private IDiagramViewModel _viewModel
{
get
{
return DataContext as IDiagramViewModel;
}
}
private IDiagramServiceProvider _service
{
get
{
return DiagramServicesProvider.Instance.Provider;
}
}
private ConnectionViewModel partialConnection;
private List<Connector> connectorsHit = new List<Connector>();
@@ -54,6 +66,22 @@ namespace AIStudio.Wpf.DiagramDesigner
}
}
private bool EnableSnapping
{
get
{
return _viewModel.EnableSnapping;
}
}
private double SnappingRadius
{
get
{
return _viewModel.SnappingRadius;
}
}
#region GridCellSize
public static readonly DependencyProperty GridCellSizeProperty =
@@ -64,8 +92,14 @@ namespace AIStudio.Wpf.DiagramDesigner
public Size GridCellSize
{
get { return (Size)GetValue(GridCellSizeProperty); }
set { SetValue(GridCellSizeProperty, value); }
get
{
return (Size)GetValue(GridCellSizeProperty);
}
set
{
SetValue(GridCellSizeProperty, value);
}
}
#endregion
@@ -80,8 +114,14 @@ namespace AIStudio.Wpf.DiagramDesigner
public bool ShowGrid
{
get { return (bool)GetValue(ShowGridProperty); }
set { SetValue(ShowGridProperty, value); }
get
{
return (bool)GetValue(ShowGridProperty);
}
set
{
SetValue(ShowGridProperty, value);
}
}
#endregion
@@ -96,8 +136,14 @@ namespace AIStudio.Wpf.DiagramDesigner
public Color GridColor
{
get { return (Color)GetValue(GridColorProperty); }
set { SetValue(GridColorProperty, value); }
get
{
return (Color)GetValue(GridColorProperty);
}
set
{
SetValue(GridColorProperty, value);
}
}
#endregion
@@ -112,8 +158,14 @@ namespace AIStudio.Wpf.DiagramDesigner
public Size GridMarginSize
{
get { return (Size)GetValue(GridMarginSizeProperty); }
set { SetValue(GridMarginSizeProperty, value); }
get
{
return (Size)GetValue(GridMarginSizeProperty);
}
set
{
SetValue(GridMarginSizeProperty, value);
}
}
#endregion
@@ -204,7 +256,10 @@ namespace AIStudio.Wpf.DiagramDesigner
private Connector sourceConnector;
public Connector SourceConnector
{
get { return sourceConnector; }
get
{
return sourceConnector;
}
set
{
if (sourceConnector != value)
@@ -218,7 +273,7 @@ namespace AIStudio.Wpf.DiagramDesigner
Point point = new Point(rectangleBounds.Left + (rectangleBounds.Width / 2),
rectangleBounds.Bottom + (rectangleBounds.Height / 2));
partialConnection = new ConnectionViewModel(_viewModel, sourceDataItem, new PartCreatedConnectorInfo(point.X, point.Y), DrawMode, RouterMode);
_viewModel.DirectAddItemCommand.Execute(partialConnection);
}
}
@@ -227,7 +282,10 @@ namespace AIStudio.Wpf.DiagramDesigner
private FullyCreatedConnectorInfo sourceConnectorInfo;
public FullyCreatedConnectorInfo SourceConnectorInfo
{
get { return sourceConnectorInfo; }
get
{
return sourceConnectorInfo;
}
set
{
if (sourceConnectorInfo != value)
@@ -288,7 +346,7 @@ namespace AIStudio.Wpf.DiagramDesigner
{
if (connectorsHit.Count == 0)
{
LinkPointDesignerItemViewModel pointItemView = new LinkPointDesignerItemViewModel(rubberbandSelectionStartPoint.Value);
LinkPointDesignerItemViewModel pointItemView = new LinkPointDesignerItemViewModel(rubberbandSelectionStartPoint.Value);
_viewModel.DirectAddItemCommand.Execute(pointItemView);
SourceConnectorInfo = pointItemView.TopConnector;
}
@@ -311,8 +369,7 @@ namespace AIStudio.Wpf.DiagramDesigner
if (_service.DrawModeViewModel.CursorMode == CursorMode.Move)
{
_viewModel.SelectedItems.OfType<DesignerItemViewModelBase>().ToList().ForEach(p =>
{
_viewModel.SelectedItems.OfType<DesignerItemViewModelBase>().ToList().ForEach(p => {
p.Left = currentPoint.X;
p.Top = currentPoint.Y;
});
@@ -325,6 +382,19 @@ namespace AIStudio.Wpf.DiagramDesigner
{
partialConnection.SinkConnectorInfo = new PartCreatedConnectorInfo(currentPoint.X, currentPoint.Y);
HitTesting(currentPoint);
if (EnableSnapping)
{
var nearPort = FindNearPortToAttachTo();
if (nearPort != null || partialConnection.SinkConnectorInfoFully != null)
{
//var oldPort = _ongoingLink.TargetPort;
//_ongoingLink.SetTargetPort(nearPort);
//oldPort?.Refresh();
//nearPort?.Refresh();
partialConnection.SinkConnectorInfo = nearPort;
}
}
}
}
else
@@ -377,6 +447,10 @@ namespace AIStudio.Wpf.DiagramDesigner
sinkDataItem.DataItem.Root.DirectRemoveItemCommand.Execute(
sinkDataItem.DataItem.Root.Items[indexOfLastTempConnection]);
sinkDataItem.DataItem.Root.AddItemCommand.Execute(new ConnectionViewModel(_viewModel, sourceDataItem, sinkDataItem, DrawMode, RouterMode));
}
else if (partialConnection.IsFullConnection)
{
}
else if (_service.DrawModeViewModel.GetDrawMode() == DrawMode.DirectLine && connectorsHit.Count() == 1)
{
@@ -403,7 +477,7 @@ namespace AIStudio.Wpf.DiagramDesigner
}
}
connectorsHit = new List<Connector>();
sourceConnector = null;
sourceConnectorInfo = null;
@@ -508,7 +582,7 @@ namespace AIStudio.Wpf.DiagramDesigner
itemBase.Suffix = System.IO.Path.GetExtension(itemBase.Icon).ToLower();
itemBase.InitWidthAndHeight();
itemBase.AutoSize();
itemBase.Left = Math.Max(0, position.X - itemBase.ItemWidth / 2);
itemBase.Top = Math.Max(0, position.Y - itemBase.ItemHeight / 2);
(DataContext as IDiagramViewModel).AddItemCommand.Execute(itemBase);
@@ -516,5 +590,17 @@ namespace AIStudio.Wpf.DiagramDesigner
}
e.Handled = true;
}
public FullyCreatedConnectorInfo FindNearPortToAttachTo()
{
foreach (var port in _viewModel.Items.OfType<DesignerItemViewModelBase>().ToList().SelectMany(n => n.Connectors))
{
if (partialConnection.OnGoingPosition.DistanceTo(port.Position) < SnappingRadius &&
partialConnection.SourceConnectorInfo.CanAttachTo(port))
return port;
}
return null;
}
}
}
}