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189
RevitJigSample/ExternalGraphics/DrawJigBase.cs
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189
RevitJigSample/ExternalGraphics/DrawJigBase.cs
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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using Autodesk.Revit.DB;
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using Autodesk.Revit.UI;
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namespace RevitJigSample.ExternalGraphics
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{
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public abstract class DrawJigBase : IDisposable
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{
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public UIApplication HostApplication { get; set; }
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public JigDrawingServer DrawingServer { get; set; }
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public UserActivityHook UserActivityHook { get; set; }
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public List<XYZ> PickedPoints { get; set; }
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public string UserInput { get; set; }
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private IntPtr revitWindow = IntPtr.Zero;
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protected DrawJigBase(UIApplication uiApplication)
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{
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this.UserInput = "";
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this.PickedPoints = new List<XYZ>();
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this.HostApplication = uiApplication;
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this.UserActivityHook = new UserActivityHook(true, true);
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this.UserActivityHook.OnMouseActivity += OnMouseActivity;
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this.UserActivityHook.KeyPress += OnKeyPressActivity;
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this.DrawingServer = new JigDrawingServer(this.HostApplication.ActiveUIDocument.Document);
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var externalGraphics = new DrawingServerHost();
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externalGraphics.RegisterServer(this.DrawingServer);
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this.revitWindow = GetActiveWindow();
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}
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public abstract void DrawJig();
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public virtual void OnKeyPressActivity(object sender, KeyPressEventArgs e)
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{
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var topWindow = GetActiveWindow();
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if (this.revitWindow != topWindow)
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{
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e.Handled = false;
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return;
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}
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if (this.DrawingServer != null && e.KeyChar == 27 && this.DrawingServer.BasePoint != null)
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{
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this.DrawingServer.BasePoint = null;
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this.DrawingServer.NextPoint = null;
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this.UserInput = "";
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}
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else if (this.DrawingServer != null && e.KeyChar == 27)
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{
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StopJig();
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}
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if (this.DrawingServer != null && e.KeyChar == 8 && this.UserInput.Length > 0)
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{
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this.UserInput = this.UserInput.Substring(0, this.UserInput.Length - 1);
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}
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else
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{
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if (char.IsLetterOrDigit(e.KeyChar))
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{
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this.UserInput += e.KeyChar.ToString();
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}
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}
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e.Handled = false;
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}
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public void StopJig()
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{
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if (this.UserActivityHook != null)
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{
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this.UserActivityHook.OnMouseActivity -= OnMouseActivity;
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this.UserActivityHook.KeyPress -= OnKeyPressActivity;
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this.UserActivityHook.Stop();
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}
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if (this.DrawingServer != null)
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{
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this.DrawingServer.BasePoint = null;
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this.DrawingServer.NextPoint = null;
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var externalGraphics = new DrawingServerHost();
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externalGraphics.UnRegisterServer(this.DrawingServer.Document);
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this.DrawingServer = null;
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}
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}
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public virtual void OnMouseActivity(object sender, MouseEventArgs e)
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{
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var topWindow = GetActiveWindow();
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if (this.revitWindow != topWindow)
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{
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return;
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}
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try
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{
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var currPoint = GetMousePoint();
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//add points to the list:
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if (this.PickedPoints != null && e.Clicks > 0 && e.Button == MouseButtons.Left)
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{
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this.PickedPoints.Add(currPoint);
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}
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if (this.DrawingServer.BasePoint == null && e.Clicks > 0 && e.Button == MouseButtons.Left)
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{
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//start server
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this.DrawingServer.BasePoint = currPoint;
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}
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else if (this.DrawingServer != null && e.Clicks > 0 && e.Button == MouseButtons.Left)
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{
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this.DrawingServer.BasePoint = currPoint;
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this.DrawingServer.NextPoint = null;
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}
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else if (this.DrawingServer != null)
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{
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//mouse is moving
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if (this.DrawingServer.NextPoint != null)
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{
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if (currPoint.DistanceTo(this.DrawingServer.NextPoint) > 0.01)
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{
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this.DrawingServer.NextPoint = currPoint;
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this.DrawJig();
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HostApplication.ActiveUIDocument.RefreshActiveView();
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}
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}
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else
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{
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this.DrawingServer.NextPoint = currPoint;
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this.DrawJig();
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HostApplication.ActiveUIDocument.RefreshActiveView();
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}
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}
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}
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catch (Exception ex)
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{
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}
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}
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private UIView GetActiveUiView(UIDocument uidoc)
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{
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var doc = uidoc.Document;
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var view = doc.ActiveView;
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var uiviews = uidoc.GetOpenUIViews();
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UIView uiview = null;
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foreach (var uv in uiviews)
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{
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if (uv.ViewId.Equals(view.Id))
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{
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uiview = uv;
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break;
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}
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}
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return uiview;
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}
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protected XYZ GetMousePoint()
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{
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var uiView = GetActiveUiView(this.HostApplication.ActiveUIDocument);
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var corners = uiView.GetZoomCorners();
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var rect = uiView.GetWindowRectangle();
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var p = Cursor.Position;
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var dx = (double)(p.X - rect.Left) / (rect.Right - rect.Left);
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var dy = (double)(p.Y - rect.Bottom) / (rect.Top - rect.Bottom);
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var a = corners[0];
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var b = corners[1];
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var v = b - a;
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var q = a
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+ dx * v.X * XYZ.BasisX
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+ dy * v.Y * XYZ.BasisY;
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return q;
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}
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public void Dispose()
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{
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this.StopJig();
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}
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[DllImport("user32.dll")]
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static extern IntPtr GetActiveWindow();
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}
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}
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