mirror of
https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-03-03 00:00:57 +08:00
338 lines
15 KiB
C#
338 lines
15 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Documents;
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namespace AIStudio.Wpf.DiagramDesigner
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{
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public static partial class BlockDesignerItemViewModelHelper
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{
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/// <summary>
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/// type=0最近且没有依附；=1
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/// </summary>
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/// <param name="blockDesignerItemViewModel"></param>
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/// <param name="type"></param>
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/// <returns></returns>
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public static Tuple<FullyCreatedConnectorInfo, FullyCreatedConnectorInfo> FindNearPortToAttachTo(this IDiagramViewModel diagramViewModel, BlockDesignerItemTempLink blockDesignerItemTempLink)
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{
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if (blockDesignerItemTempLink == null || blockDesignerItemTempLink.LinkList == null || blockDesignerItemTempLink.LinkList.Count == 0)
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return new Tuple<FullyCreatedConnectorInfo, FullyCreatedConnectorInfo>(null, null);
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List<BlockDesignerItemViewModel> items = diagramViewModel.Items.OfType<BlockDesignerItemViewModel>().Where(p => !blockDesignerItemTempLink.LinkList.Contains(p)).ToList();
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return diagramViewModel.FindNearPortToAttachTo(items, blockDesignerItemTempLink);
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}
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public static Tuple<FullyCreatedConnectorInfo, FullyCreatedConnectorInfo> FindNearPortToAttachTo(this IDiagramViewModel diagramViewModel, List<BlockDesignerItemViewModel> items, BlockDesignerItemTempLink blockDesignerItemTempLink)
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{
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if (blockDesignerItemTempLink == null || blockDesignerItemTempLink.LinkList == null || blockDesignerItemTempLink.LinkList.Count == 0)
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return new Tuple<FullyCreatedConnectorInfo, FullyCreatedConnectorInfo>(null, null);
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FullyCreatedConnectorInfo parent = null;
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FullyCreatedConnectorInfo next = null;
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foreach (var port2 in blockDesignerItemTempLink.Connectors.OfType<BlockConnectorInfo>())
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{
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bool success = false;
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foreach (var item in items)
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{
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foreach (var port in item.Connectors.OfType<BlockConnectorInfo>())
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{
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//已经被连接的不允许在顶部吸附了
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if ((port.Orientation == ConnectorOrientation.Top || port.Orientation == ConnectorOrientation.Left) && port.DataItem.LinkNode.Previous != null)
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{
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continue;
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}
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//parent
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if (parent == null)
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{
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if ((port.Orientation == ConnectorOrientation.Right && port2.Orientation == ConnectorOrientation.Left)
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|| (port.Orientation == ConnectorOrientation.Bottom && port2.Orientation == ConnectorOrientation.Top))
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{
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var dis = port.DistanceTo(port2);
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//Debug.WriteLine($"{port.DataItem.Name}-{port2.DataItem.Name}:{dis}");
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if (dis < diagramViewModel.DiagramOption.SnappingOption.BlockSnappingRadius)
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{
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port.DataItem.ShowConnectors = true;
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if (port.CanAttachTo(port2) == true)
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{
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diagramViewModel.AddAttachTo(port, true);
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parent = port;
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success = true;
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break;
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}
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else
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{
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diagramViewModel.AddAttachTo(port, false);
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}
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}
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}
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}
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//next
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if (next == null)
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{
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if ((port.Orientation == ConnectorOrientation.Left && port2.Orientation == ConnectorOrientation.Right)
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|| (port.Orientation == ConnectorOrientation.Top && port2.Orientation == ConnectorOrientation.Bottom))
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{
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var dis = port.DistanceTo(port2);
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//Debug.WriteLine($"{port.DataItem.Name}-{port2.DataItem.Name}:{dis}");
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if (dis < diagramViewModel.DiagramOption.SnappingOption.BlockSnappingRadius)
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{
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port.DataItem.ShowConnectors = true;
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if (port.CanAttachTo(port2) == true)
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{
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diagramViewModel.AddAttachTo(port, true);
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next = port;
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success = true;
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break;
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}
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else
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{
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diagramViewModel.AddAttachTo(port, false);
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}
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}
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}
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}
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}
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if (success)
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{
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break;
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}
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}
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if (success)
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{
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break;
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}
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}
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return new Tuple<FullyCreatedConnectorInfo, FullyCreatedConnectorInfo>(parent, next);
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}
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public static BlockItemsContainerInfo FindNearContainerToAttachTo(this IDiagramViewModel diagramViewModel, BlockDesignerItemTempLink blockDesignerItemTempLink)
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{
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if (blockDesignerItemTempLink == null || blockDesignerItemTempLink.LinkList == null || blockDesignerItemTempLink.LinkList.Count == 0)
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return null;
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List<BlockDesignerItemViewModel> items;
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items = diagramViewModel.Items.OfType<BlockDesignerItemViewModel>().Where(p => !blockDesignerItemTempLink.LinkList.Contains(p)).ToList();
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foreach (var container in items.SelectMany(n => n.Containers))
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{
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if (container.GetBounds().IntersectsWith(blockDesignerItemTempLink.GetBounds())) //如果两个位置相交
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{
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var innerport = container.GetAllContainers(container.Children, false).Where(p => p.GetBounds().IntersectsWith(blockDesignerItemTempLink.GetBounds())).OrderByDescending(p => p.ContainerLevel).FirstOrDefault();
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if (innerport != null)
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{
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if (innerport.CanAttachTo(blockDesignerItemTempLink.LinkList.FirstOrDefault()) == true)
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{
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innerport.DataItem.ShowConnectors = true;
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if (innerport.OnlyOneChild || innerport.Children.Count == 0)
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{
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diagramViewModel.AddAttachTo(innerport, true);
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}
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else
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{
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diagramViewModel.FindNearPortToAttachTo(innerport.Children.ToList(), blockDesignerItemTempLink);
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}
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return innerport;
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}
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//else
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//{
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// innerport.DisableAttachTo = true;
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// return null;
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//}
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}
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else
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{
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if (container.CanAttachTo(blockDesignerItemTempLink.LinkList.FirstOrDefault()) == true)
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{
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container.DataItem.ShowConnectors = true;
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if (container.OnlyOneChild || container.Children.Count == 0)
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{
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diagramViewModel.AddAttachTo(container, true);
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}
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else
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{
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diagramViewModel.FindNearPortToAttachTo(container.Children.ToList(), blockDesignerItemTempLink);
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}
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return container;
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}
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//else
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//{
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// port.DisableAttachTo = true;
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// return null;
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//}
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}
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}
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}
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return null;
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}
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#region Block拖拽预览-拖拽完成
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public static void PreviewNearBlock(this IBlockDiagramViewModel diagramViewModel, List<BlockDesignerItemViewModel> blocks)
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{
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if (diagramViewModel == null)
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return;
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if (blocks.Any())
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{
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diagramViewModel.ClearAttachTo();
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var links = BlockDesignerItemTempLink.Build(blocks);
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blocks.ToList().ForEach(p => {
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if (p.ZIndex != int.MaxValue)
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{
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p.SetOldValue(p.ZIndex, "ZIndex");
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}
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p.ZIndex = int.MaxValue;
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});
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foreach (BlockDesignerItemTempLink item in links)
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{
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var container = diagramViewModel.FindNearContainerToAttachTo(item);
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if (container != null)
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{
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continue;
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}
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diagramViewModel.FindNearPortToAttachTo(item);
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}
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}
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}
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public static void FinishNearBlock(this IBlockDiagramViewModel diagramViewModel, List<BlockDesignerItemViewModel> blocks)
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{
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if (diagramViewModel == null)
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return;
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if (blocks.Any())
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{
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var links = BlockDesignerItemTempLink.Build(blocks);
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blocks.ToList().ForEach(p => {
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if (p.HasOldValue("ZIndex"))
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{
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p.ZIndex = p.GetOldValue<int>("ZIndex");
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}
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});
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foreach (BlockDesignerItemTempLink item in links)
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{
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var container = diagramViewModel.FindNearContainerToAttachTo(item);
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if (container != null)
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{
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int index = 0;
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var child = container.Children.FirstOrDefault(p => p.Connectors.Any(q => q.BeAttachTo == true));
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if (child != null)
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{
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index = container.Children.IndexOf(child);
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if (child.RightConnector?.BeAttachTo == true || child.BottomConnector?.BeAttachTo == true)
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{
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index++;
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}
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}
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diagramViewModel.InsertChildCommand.Execute(new BlockContainerPara() { Item = container.DataItem, Child = item.LinkList.FirstOrDefault(), Container = container, Index = index });
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continue;
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}
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var portTuple = diagramViewModel.FindNearPortToAttachTo(item);
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var portParent = portTuple.Item1;
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var portNext = portTuple.Item2;
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if (portParent != null)
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{
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diagramViewModel.AddNextCommand.Execute(new BlockNextPara() { Item = portParent.DataItem as BlockDesignerItemViewModel, Next = item.LinkList.FirstOrDefault() });
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portParent.BeAttachTo = false;
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portParent.DisableAttachTo = false;
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}
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else if (portNext != null)
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{
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diagramViewModel.AddNextCommand.Execute(new BlockNextPara() { First = item.LinkList.FirstOrDefault(), Item = item.LinkList.LastOrDefault(), Next = portNext.DataItem as BlockDesignerItemViewModel });
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portNext.BeAttachTo = false;
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portNext.DisableAttachTo = false;
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}
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else
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{
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if (item.LinkList.FirstOrDefault().LinkNode.Previous != null)
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{
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diagramViewModel.RemoveNextCommand.Execute(new BlockNextPara() { Item = item.LinkList.FirstOrDefault().LinkNode.Previous.Value, Next = item.LinkList.FirstOrDefault().LinkNode.Value });
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}
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}
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}
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diagramViewModel.ClearAttachTo();
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}
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}
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#endregion
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}
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public static class LinkedListExtensions
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{
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public static void InsertRange(this LinkedList<BlockDesignerItemViewModel> source, LinkedListNode<BlockDesignerItemViewModel> node, IEnumerable<BlockDesignerItemViewModel> items)
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{
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if (node == null || items.Count() == 0)
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{
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return;
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}
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BlockDesignerItemViewModel last = null;
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foreach (var item in items)
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{
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item.LinkNode = source.AddAfter(node, item);
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item.ParentId = item.LinkNode.Previous.Value.Id;
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node = item.LinkNode;
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last = item;
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}
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//把后面的接上
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var lastnode = source.Find(last);
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if (lastnode.Next != null)
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{
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lastnode.Next.Value.ParentId = last.Id;
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}
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}
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public static void AppendRange(this LinkedList<BlockDesignerItemViewModel> source, IEnumerable<BlockDesignerItemViewModel> items)
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{
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foreach (var item in items)
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{
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item.LinkNode = source.AddLast(item);
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item.ParentId = item.LinkNode.Previous?.Value.Id ?? new Guid();
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}
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}
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public static void PrependRange(this LinkedList<BlockDesignerItemViewModel> source, IEnumerable<BlockDesignerItemViewModel> items)
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{
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var first = source.First; // If the list is empty, we can just append everything.
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if (first is null)
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{
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AppendRange(source, items); return;
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} // Otherwise, add each item in turn just before the original first item
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foreach (var item in items)
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{
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item.LinkNode = source.AddBefore(first, item);
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item.ParentId = item.LinkNode.Previous.Value.Id;
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}
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}
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}
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}
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