using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using Nevron.ThinWeb;

using Nevron.Diagram.ThinWeb;

using Nevron.GraphicsCore;

using Nevron.Diagram.Shapes;

using Nevron.Diagram;

using Nevron.Dom;

using System.Drawing;

namespace MvcApplication1.Controllers

{

public class Diagram1Controller : Controller

{

public Diagram1Controller()

{

}

#region Must Override

/// <summary>

/// Called to get the server id the diagram

/// </summary>

public string ServerId

{

get

{

string name = this.GetType().Name;

int index = name.LastIndexOf("Controller");

return name.Substring(0, index);

}

}

#endregion

#region Implementation

private NThinDiagramControl Control

{

get

{

NThinDiagramControl control = new NThinDiagramControl();

control.StateId = this.ServerId;

control.ServiceUrl = "/" + ServerId + "/Service";

return control;

}

}

#endregion

#region Verbs

/// <summary>

/// Renders the initial content of the diagram on the page

/// </summary>

/// <returns></returns>

public ActionResult Content()

{

NThinDiagramControl control = this.Control;

control.ConfigureInitialResponse();

// add the client mouse event tool

NDrawingDocument document = control.Document;

document.BeginInit();

document.BackgroundStyle.FrameStyle.Visible = false;

document.AutoBoundsPadding = new Nevron.Diagram.NMargins(10f, 10f, 10f, 10f);

document.Style.FillStyle = new NColorFillStyle(Color.White);

// create a circle

NBasicShapesFactory factory = new NBasicShapesFactory(document);

NShape circle = factory.CreateShape(BasicShapes.Circle);

circle.Bounds = new NRectangleF(10f, 10f, 100f, 100f);

circle.Style.FillStyle = new NColorFillStyle(Color.Blue);

document.ActiveLayer.AddChild(circle);

control.SizeToContent();

// create a rectangle

NShape rect = factory.CreateShape(BasicShapes.Rectangle);

rect.Bounds = new NRectangleF(120f, 120f, 100f, 100f);

rect.Style.FillStyle = new NColorFillStyle(Color.Blue);

document.ActiveLayer.AddChild(rect);

control.SizeToContent();

NServerMouseEventTool serverMouseEventTool = new NServerMouseEventTool();

serverMouseEventTool.MouseDown = new DiagramMouseDownCallback();

// configure the controller

control.Controller.Tools.Add(serverMouseEventTool);

return new NThinControlResult(control.ProcessResponses());

}

/// <summary>

/// Services AJAX calls to the control

/// </summary>

/// <param name="request"></param>

/// <returns></returns>

public ActionResult Service(string request)

{

NResponseOutput output = this.Control.ProcessRequest(request);

return new NThinControlResult(output);

}

/// <summary>

/// Renders the control script

/// </summary>

/// <returns></returns>

public ActionResult Script()

{

return new NThinControlResult(new NTextResponseOutput(NTextResponseOutput.m_MimeHTML, this.Control.GetIncludeScript()));

}

#endregion

}

/// <summary>

/// Mouse down callback called when the user presses a mouse button

/// </summary>

[Serializable]

class DiagramMouseDownCallback : INMouseEventCallback

{

#region INMouseEventCallback Members

public void OnMouseEvent(NAspNetThinWebControl control, NBrowserMouseEventArgs e)

{

if (e.MouseButton == MouseButton.Left)

{

NThinDiagramControl diagramControl = (NThinDiagramControl)control;

NNodeList allShapes = diagramControl.Document.ActiveLayer.Children(Nevron.Diagram.Filters.NFilters.Shape2D);

NNodeList affectedNodes = diagramControl.HitTest(new NPointF(e.X, e.Y));

NNodeList affectedShapes = affectedNodes.Filter(Nevron.Diagram.Filters.NFilters.Shape2D);

int length;

length = allShapes.Count;

for (int i = 0; i < length; i++)

{

NShape shape = allShapes[i] as NShape;

if (shape != null)

{

shape.Style.FillStyle = new NColorFillStyle(Color.Blue);

}

}

length = affectedShapes.Count;

for (int i = 0; i < length; i++)

{

NShape shape = affectedShapes[i] as NShape;

if (shape != null)

{

shape.Style.FillStyle = new NColorFillStyle(Color.Red);

}

}

diagramControl.Update();

}

}

#endregion

}

class NThinControlResult : PartialViewResult

{

public NThinControlResult(NResponseOutput output)

{

m_Output = output;

}

public override void ExecuteResult(ControllerContext context)

{

NTextResponseOutput textOutput = m_Output as NTextResponseOutput;

if (textOutput != null)

{

context.HttpContext.Response.Write(textOutput.m_Text);

return;

}

NBinaryResponseOutput binaryOutput = m_Output as NBinaryResponseOutput;

if (binaryOutput != null)

{

context.HttpContext.Response.Clear();

context.HttpContext.Response.ContentType = binaryOutput.m_MimeType;

context.HttpContext.Response.OutputStream.Write(binaryOutput.m_Data, 0, binaryOutput.m_Length);

if (binaryOutput.m_Headers != null)

{

int count = binaryOutput.m_Headers.Length;

for (int i = 0; i < count; i += 2)

{

context.HttpContext.Response.AppendHeader(binaryOutput.m_Headers[i], binaryOutput.m_Headers[i + 1]);

i = i + 1;

}

}

}

}

NResponseOutput m_Output;

}

}