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添加Avalonia项目的demo

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fengjiayi
2025-01-01 17:49:48 +08:00
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Serein.Workbench.Avalonia/Services/NodeOperationService.cs Normal file
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using Avalonia;
using Avalonia.Controls;
using Avalonia.Media;
using Avalonia.VisualTree;
using Newtonsoft.Json;
using Serein.Library;
using Serein.Library.Api;
using Serein.Library.Utils;
using Serein.NodeFlow;
using Serein.Workbench.Avalonia.Api;
using Serein.Workbench.Avalonia.Custom.Node.ViewModels;
using Serein.Workbench.Avalonia.Custom.Node.Views;
using Serein.Workbench.Avalonia.Custom.Views;
using Serein.Workbench.Avalonia.Extension;
using Serein.Workbench.Avalonia.Model;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace Serein.Workbench.Avalonia.Api
{
/// <summary>
/// 提供节点操作的接口
/// </summary>
internal interface INodeOperationService
{
/// <summary>
/// 连接数据
/// </summary>
ConnectingData ConnectingData { get; }
/// <summary>
/// 主画布
/// </summary>
Canvas MainCanvas { get; set; }
/// <summary>
/// 节点创建事件
/// </summary>
event NodeViewCreateHandle OnNodeViewCreate;
/// <summary>
/// 创建节点控件
/// </summary>
/// <param name="nodeType">控件类型</param>
/// <param name="position">创建坐标</param>
/// <param name="methodDetailsInfo">节点方法信息</param>
public void CreateNodeView(MethodDetailsInfo methodDetailsInfo, PositionOfUI position);
/// <summary>
/// 尝试从连接控制点创建连接
/// </summary>
/// <param name="startJunction"></param>
void TryCreateConnectionOnJunction(NodeJunctionView startJunction);
}
#region 事件与事件参数
/// <summary>
/// 创建节点控件事件
/// </summary>
/// <param name="eventArgs"></param>
internal delegate bool NodeViewCreateHandle(NodeViewCreateEventArgs eventArgs);
/// <summary>
/// 创建节点控件事件参数
/// </summary>
internal class NodeViewCreateEventArgs : EventArgs
{
internal NodeViewCreateEventArgs(INodeControl nodeControl, PositionOfUI position)
{
this.NodeControl = nodeControl;
this.Position = position;
}
public INodeControl NodeControl { get; private set; }
public PositionOfUI Position { get; private set; }
}
#endregion
}
namespace Serein.Workbench.Avalonia.Services
{
/// <summary>
/// 节点操作相关服务
/// </summary>
internal class NodeOperationService : INodeOperationService
{
public NodeOperationService(IFlowEnvironment flowEnvironment,
IFlowEEForwardingService feefService)
{
this.flowEnvironment = flowEnvironment;
this.feefService = feefService;
NodeMVVMManagement.RegisterUI(NodeControlType.Action, typeof(ActionNodeView), typeof(ActionNodeViewModel)); // 注册动作节点
ConnectingData = new ConnectingData();
feefService.OnNodeCreate += FeefService_OnNodeCreate; // 订阅运行环境创建节点事件
// 手动加载项目
_ = Task.Run(async delegate
{
await Task.Delay(1000);
var flowEnvironment = App.GetService<IFlowEnvironment>();
var filePath = @"C:\Users\Az\source\repos\CLBanyunqiState\CLBanyunqiState\bin\debug\net8.0\project.dnf";
string content = System.IO.File.ReadAllText(filePath); // 读取整个文件内容
var projectData = JsonConvert.DeserializeObject<SereinProjectData>(content);
var projectDfilePath = System.IO.Path.GetDirectoryName(filePath)!;
flowEnvironment.LoadProject(new FlowEnvInfo { Project = projectData }, projectDfilePath);
}, CancellationToken.None);
}
public ConnectingData ConnectingData { get; private set; }
public Canvas MainCanvas { get; set; }
#region 私有变量
/// <summary>
/// 存储所有与节点有关的控件
/// </summary>
private Dictionary<string, INodeControl> NodeControls { get; } = [];
/// <summary>
/// 流程运行环境
/// </summary>
private readonly IFlowEnvironment flowEnvironment;
/// <summary>
/// 流程运行环境事件转发
/// </summary>
private readonly IFlowEEForwardingService feefService;
#endregion
/// <summary>
/// 创建了节点控件
/// </summary>
public event NodeViewCreateHandle OnNodeViewCreate;
/// <summary>
/// 创建节点控件
/// </summary>
/// <param name="nodeType">控件类型</param>
/// <param name="position">创建坐标</param>
/// <param name="methodDetailsInfo">节点方法信息（基础节点传null）</param>
public void CreateNodeView(MethodDetailsInfo methodDetailsInfo, PositionOfUI position)
{
Task.Run(async () =>
{
if (EnumHelper.TryConvertEnum<NodeControlType>(methodDetailsInfo.NodeType, out var nodeType))
{
await flowEnvironment.CreateNodeAsync(nodeType, position, methodDetailsInfo);
}
});
}
/// <summary>
/// 从工作台事件转发器监听节点创建事件
/// </summary>
/// <param name="eventArgs"></param>
private void FeefService_OnNodeCreate(NodeCreateEventArgs eventArgs)
{
var nodeModel = eventArgs.NodeModel;
if (NodeControls.ContainsKey(nodeModel.Guid))
{
SereinEnv.WriteLine(InfoType.WARN, $"OnNodeCreate 事件意外触发，节点Guid重复 - {nodeModel.Guid}");
return;
}
if (!NodeMVVMManagement.TryGetType(nodeModel.ControlType, out var nodeMVVM))
{
SereinEnv.WriteLine(InfoType.INFO, $"无法创建{nodeModel.ControlType}节点，节点类型尚未注册。");
return;
}
if (nodeMVVM.ControlType == null
|| nodeMVVM.ViewModelType == null)
{
SereinEnv.WriteLine(InfoType.INFO, $"无法创建{nodeModel.ControlType}节点，UI类型尚未注册（请通过 NodeMVVMManagement.RegisterUI() 方法进行注册）。");
return;
}
var isSuccessful = TryCreateNodeView(nodeMVVM.ControlType, // 控件UI类型
nodeMVVM.ViewModelType, // 控件VIewModel类型
nodeModel, // 控件数据实体
out var nodeControl); // 成功创建后传出的节点控件实体
if (!isSuccessful || nodeControl is null)
{
SereinEnv.WriteLine(InfoType.INFO, $"无法创建{nodeModel.ControlType}节点，节点创建失败。");
return;
}
var e = new NodeViewCreateEventArgs(nodeControl, eventArgs.Position);
if (OnNodeViewCreate?.Invoke(e) == true)
{
// 成功创建
NodeControls.TryAdd(nodeModel.Guid, nodeControl); // 缓存起来，通知其它地方拿取这个控件
}
}
/// <summary>
/// 创建节点控件
/// </summary>
/// <param name="viewType">节点控件视图控件类型</param>
/// <param name="viewModelType">节点控件ViewModel类型</param>
/// <param name="nodeModel">节点Model实例</param>
/// <param name="nodeView">返回的节点对象</param>
/// <returns>是否创建成功</returns>
/// <exception cref="Exception">无法创建节点控件</exception>
private bool TryCreateNodeView(Type viewType, Type viewModelType, NodeModelBase nodeModel, out INodeControl? nodeView)
{
if (string.IsNullOrEmpty(nodeModel.Guid))
{
nodeModel.Guid = Guid.NewGuid().ToString();
}
var t_ViewModel = Activator.CreateInstance(viewModelType);
if (t_ViewModel is not NodeViewModelBase viewModelBase)
{
nodeView = null;
return false;
}
viewModelBase.NodeModelBase = nodeModel; // 设置节点对象
var controlObj = Activator.CreateInstance(viewType);
if (controlObj is not INodeControl nodeControl)
{
nodeView = null;
return false;
}
else
{
nodeControl.SetNodeModel(nodeModel);
nodeView = nodeControl;
return true;
}
// 在其它地方验证过了，所以注释
//if ((viewType is null)
// || viewModelType is null
// || nodeModel is null)
//{
// nodeView = null;
// return false;
//}
//if (typeof(INodeControl).IsSubclassOf(viewType)
// || typeof(NodeViewModelBase).IsSubclassOf(viewModelType))
//{
// nodeView = null;
// return false;
//}
}
/// <summary>
/// 尝试在连接控制点之间创建连接线
/// </summary>
public void TryCreateConnectionOnJunction(NodeJunctionView startJunction)
{
if (MainCanvas is not null)
{
var myData = ConnectingData;
var junctionSize = startJunction.GetTransformedBounds()!.Value.Bounds.Size;
var junctionPoint = new Point(junctionSize.Width / 2, junctionSize.Height / 2);
if (startJunction.TranslatePoint(junctionPoint, MainCanvas) is Point point)
{
myData.StartPoint = point;
}
else
{
return;
}
myData.Reset();
myData.IsCreateing = true; // 表示开始连接
myData.StartJunction = startJunction;
myData.CurrentJunction = startJunction;
var junctionOfConnectionType = startJunction.JunctionType.ToConnectyionType();
ConnectionLineShape bezierLine; // 类别
Brush brushColor; // 临时线的颜色
if (junctionOfConnectionType == JunctionOfConnectionType.Invoke)
{
brushColor = ConnectionInvokeType.IsSucceed.ToLineColor();
}
else if (junctionOfConnectionType == JunctionOfConnectionType.Arg)
{
brushColor = ConnectionArgSourceType.GetOtherNodeData.ToLineColor();
}
else
{
return;
}
bezierLine = new ConnectionLineShape(myData.StartPoint,
myData.StartPoint,
brushColor,
isTop: true); // 绘制临时的线
//Mouse.OverrideCursor = Cursors.Cross; // 设置鼠标为正在创建连线
myData.TempLine = new MyLine(MainCanvas, bezierLine);
}
}
}
}