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Mstn.Toolkit/External/UserPickTool.cs
vendored
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273
Mstn.Toolkit/External/UserPickTool.cs
vendored
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using System;
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using Bentley.DgnPlatformNET;
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using Bentley.DgnPlatformNET.Elements;
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using static Bentley.DgnPlatformNET.DgnElementSetTool;
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namespace Mstn.Toolkit.External
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{
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public class UserPickTool : DgnElementSetTool
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{
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private Func<Element, bool> allowElement;
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private string prompt;
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private Action<ElementAgenda> operations;
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private UserPickTool(int toolId, int promptId) : base(toolId, promptId)
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{
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}
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public static void Setup(Func<Element, bool> allowElement, Action<ElementAgenda> operations, string prompt = "请选择元素")
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{
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UserPickTool tool = new(0, 0)
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{
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prompt = prompt,
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allowElement = allowElement,
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operations = operations,
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};
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tool.InstallTool();
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}
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/// <summary>
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/// 判断是否要启用框选或者划选
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/// </summary>
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/// <returns></returns>
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protected override UsesDragSelect AllowDragSelect()
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{
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return UsesDragSelect.Box;
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}
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///// <summary>
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///// 筛选拾取的元素
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///// </summary>
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///// <returns></returns>
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//protected override bool FilterAgendaEntries()
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//{
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// for (uint i = 0; i < ElementAgenda.GetCount(); i++)
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// {
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// var elem = ElementAgenda.GetEntry(i);
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// return allowElement(elem);
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// }
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// return false;
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// //return base.FilterAgendaEntries();
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//}
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///// <summary>
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///// 通过点选、围栅还是选择集来填充ElementAgenda
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///// </summary>
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///// <returns></returns>
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//protected override ElementSource GetElementSource()
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//{
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// return base.GetElementSource();
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//}
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/// <summary>
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/// 获取偏好选择方式
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/// </summary>
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/// <returns></returns>
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protected override ElementSource GetPreferredElementSource()
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{
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switch (AllowFence())
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{
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case UsesFence.Check:
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if (UseActiveFence() && FenceManager.IsFenceActive)
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{
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return ElementSource.Fence;
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}
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break;
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case UsesFence.Required:
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return ElementSource.Fence;
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case UsesFence.None:
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break;
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default:
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break;
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}
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switch (AllowSelection())
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{
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case UsesSelection.Check:
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if (SelectionSetManager.IsActive())
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{
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return ElementSource.SelectionSet;
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}
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break;
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case UsesSelection.Required:
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return ElementSource.SelectionSet;
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case UsesSelection.None:
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break;
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default:
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break;
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}
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return ElementSource.Pick;
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}
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/// <summary>
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/// 判断是否需要用户再点击左键才开始处理元素
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/// </summary>
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/// <returns></returns>
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protected override bool NeedAcceptPoint()
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{
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return false;
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}
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///// <summary>
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/////
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///// </summary>
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///// <param name="ev"></param>
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///// <param name="newSearch">是否重新搜索</param>
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///// <remarks>newSearch=false:表明用户最后拾取的元素不是想要的，调用RemoveAgendaElement移除，并继续往后定位其他元素</remarks>
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//protected override void LocateOneElement(DgnButtonEvent ev, bool newSearch)
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//{
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// base.LocateOneElement(ev, newSearch);
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//}
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///// <summary>
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///// 对ElementAgenda中的元素进行修改筛选
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///// </summary>
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//protected override void ModifyAgendaEntries()
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//{
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// base.ModifyAgendaEntries();
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//}
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///// <summary>
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///// 点击确认键（默认为左键）后触发，判断是否需要拾取元素
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///// </summary>
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///// <param name="ev"></param>
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///// <returns></returns>
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//protected override bool OnDataButton(DgnButtonEvent ev)//
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//{
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// //var promptId = "OnDataButton";
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// NotificationManager.OutputPrompt(prompt);//将提示语输出到提示框中
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// if (ElementSource.Pick == GetElementSource())
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// {
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// //光标变为点选状态
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// BeginPickElements();
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// }
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// else if (ElementSource.SelectionSet == GetElementSource())
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// {
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// //是否需要用户输入额外的确认点才开始处理选择集元素/判断是否需要用户再点击左键才开始处理元素
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// if (NeedPointForSelection())
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// {
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// }
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// else
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// {
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// BuildAgenda(ev);
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// ProcessAgenda(ev);
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// OnModifyComplete(ev);
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// }
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// if (!NeedPointForDynamics())
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// {
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// if (ElementSource.Pick != GetElementSource())
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// {
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// BuildAgenda(ev);
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// }
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// }
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// }
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// return true;
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//}
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/// <summary>
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/// 修改完毕，对选择集中的元素进行处理
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/// </summary>
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/// <param name="ev"></param>
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/// <returns></returns>
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protected override bool OnModifyComplete(DgnButtonEvent ev)
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{
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operations(ElementAgenda);
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//for (uint i = 0; i < ElementAgenda.GetCount(); i++)
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//{
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// var elem = ElementAgenda.GetEntry(i);
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// operation(elem);
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//}
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NotificationManager.OutputPrompt("完成");//将提示语输出到提示框中
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return base.OnModifyComplete(ev);
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}
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/// <summary>
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/// 工具激活后执行
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/// </summary>
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protected override void OnPostInstall()
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{
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//var promptId = "OnPostInstall";
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//NotificationManager.OutputPrompt(promptId);//将提示语输出到提示框中
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NotificationManager.OutputPrompt(prompt);
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//var dgnModel = Session.Instance.GetActiveDgnModel();//获得当前的模型空间
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base.OnPostInstall();
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}
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/// <summary>
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/// 光标定位到某个元素时调用，判断是否支持该元素，能否被选中
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/// </summary>
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/// <param name="path"></param>
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/// <param name="cantAcceptReason">光标在上方时，进行提醒，为什么不能被选中</param>
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/// <returns></returns>
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protected override bool OnPostLocate(HitPath path, out string cantAcceptReason)
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{
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var elem = path.GetCursorElement();
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var b = allowElement(elem);
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cantAcceptReason = b ? path.GetCursorElement().Description : "元素不适用此功能";
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return b;
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}
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/// <summary>
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/// 点击重置键（默认为右键）触发
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/// </summary>
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/// <param name="ev"></param>
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/// <returns></returns>
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protected override bool OnResetButton(DgnButtonEvent ev)//
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{
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ExitTool();//退出工具
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return true;//返回
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}
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///// <summary>
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///// 重启工具时触发
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///// </summary>
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protected override void OnRestartTool()
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{
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Setup(allowElement, operations, prompt);
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}
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///// <summary>
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///// 设置选择方式
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///// </summary>
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///// <param name="source"></param>
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//protected override void SetElementSource(ElementSource source)
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//{
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// switch (source)
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// {
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// case ElementSource.Pick:
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// break;
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// case ElementSource.Fence:
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// break;
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// case ElementSource.SelectionSet:
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// break;
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// default:
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// break;
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// }
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//}
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/// <summary>
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/// 是否需要继续进行选择
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/// </summary>
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/// <param name="ev"></param>
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/// <returns></returns>
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protected override bool WantAdditionalLocate(DgnButtonEvent ev)
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{
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if (ev == null)//若没有选择到元素
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{
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return true;
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}
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if (ev.IsControlKey)//若检测到按动Ctrl行为
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{
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return true;
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}
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if (ElementAgenda.GetCount() == 0)//若选择集中没有元素
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{
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return true;
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}
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return false;
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}
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/*
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* 如果我们对通过参数传递进来的元素进行修改，并且返回SUCCESS的话，在_DoOperationForModify
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* 中会用修改后的元素替换掉原来的元素，当然前提是_IsModifyOriginal返回true。否则的话会直接
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* 把修改后的元素重新添加到Dgn文件中。
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*/
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public override StatusInt OnElementModify(Element element)
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{
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return StatusInt.Error;
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}
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}
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}
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