svgdomcsharp-cvs

[Jeff R. <jef...@us...>]

Update of /cvsroot/svgdomcsharp/SharpVectorGraphics/src/SvgComponents
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12283/src/SvgComponents

Modified Files:
	SvgComponents.csproj SvgPictureBox.cs 
Log Message:
Library wide changes for scripting support and automated re-rendering

Index: SvgPictureBox.cs
===================================================================
RCS file: /cvsroot/svgdomcsharp/SharpVectorGraphics/src/SvgComponents/SvgPictureBox.cs,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- SvgPictureBox.cs	11 Sep 2005 18:31:10 -0000	1.2
+++ SvgPictureBox.cs	19 Nov 2005 03:13:24 -0000	1.3
@@ -9,14 +9,26 @@
 using System.Windows.Forms;
 using System.Xml;
 using System.Reflection;
+using System.Text;
+using System.Security;
+using System.Security.Permissions;
+
+using SharpVectors.Dom.Events;
 using SharpVectors.Dom.Svg;
 using SharpVectors.Xml;
 using SharpVectors.Renderer.Gdi;
+using SharpVectors.Renderer;
+using SharpVectors.Dom.Svg.Rendering;
 using SharpVectors.Dom;
 using SharpVectors.Dom.Css;
+using SharpVectors.Scripting;
+using SharpVectors.Collections;
+using SharpVectors.Net;
 
 using System.Threading;
 
+[assembly: AllowPartiallyTrustedCallers]  
+
 namespace SvgComponents
 {
   public class SvgPictureBox : System.Windows.Forms.Control
@@ -35,12 +47,42 @@
       SetStyle(ControlStyles.AllPaintingInWmPaint, true);
       SetStyle(ControlStyles.DoubleBuffer, true);
 
+      scriptEngineByMimeType = new TypeDictionary();
+      SetMimeTypeEngineType("application/ecmascript", typeof(JScriptEngine));
+      
       renderer = new GdiRenderer();
+      renderer.OnRender = new RenderEvent(this.OnRender);
       window = new SvgWindow(this, renderer);
     }
     #endregion
 
     #region Events
+    public void OnRender(RectangleF updatedRect) 
+    {
+      if (surface != null) 
+      {
+        if (updatedRect == RectangleF.Empty) 
+          Draw(surface);        
+        else  
+          Draw(surface, updatedRect);
+      }
+      else 
+      {
+        surface = CreateGraphics();
+        if (updatedRect == RectangleF.Empty) 
+          Draw(surface);        
+        else  
+          Draw(surface, updatedRect);
+        surface.Dispose();
+        surface = null;
+      }
+
+      // Collect the rendering regions for later updates
+      SvgDocument doc = (window.Document as SvgDocument);
+      SvgElement root = (doc.RootElement as SvgElement);
+      //root.CacheRenderingRegion(renderer);
+    }
+
     private int lastX = -1;
     private int lastY = -1;
     protected override void OnMouseMove(MouseEventArgs e)
@@ -139,16 +181,22 @@
 
       if(value != null && value.Length > 0)
       {
+        // Load the source
         window.Src = value;
+        // Initialize the style sheets
         SetupStyleSheets();
+        // Execute all script elements
+        UnloadEngines();
+        InitializeEvents();        
+        ExecuteScripts();
         //JR
         if (autoSize) 
         {
           ISvgSvgElement svgEl = window.Document.RootElement;          
           this.Width = (int)svgEl.Width.BaseVal.Value;
           this.Height = (int)svgEl.Height.BaseVal.Value;
-          ((CssXmlElement)svgEl).CssInvalidate();
         }
+        renderer.InvalidRect = RectangleF.Empty;
         Render();
         loaded = true;
       }
@@ -168,6 +216,11 @@
 		  try
 			{
 #endif
+      // Worry about clearing the graphics nodes map...
+      renderer.ClearMap();
+      System.GC.Collect();
+      System.Threading.Thread.Sleep(1);
+
       if(xml != null && xml.Length > 0)
       {
         if(xml != null && xml.Length > 0)
@@ -200,8 +253,6 @@
     {
       if ( this.window != null ) 
      {
         renderAndInvalidate();
-        System.GC.Collect();
-        System.Threading.Thread.Sleep(1);
       }
     }
 
@@ -252,21 +303,6 @@
 #endif
       renderer.Render(window.Document as SvgDocument);
 
-      if (surface != null)
-        Draw(surface);
-      else 
-      {
-        surface = CreateGraphics();
-        Draw(surface);
-        surface.Dispose();
-        surface = null;
-      }
-
-      // Collect the rendering regions for later updates
-      SvgDocument doc = (window.Document as SvgDocument);
-      SvgElement root = (doc.RootElement as SvgElement);
-      root.CacheRenderingRegion(renderer);
-
 #if RELEASE	
 			}
 			catch(Exception e)
@@ -278,30 +314,25 @@
 
     private void updateAndInvalidate(RectangleF rect)
     {
-#if RELEASE
-			try
-			{
-#endif
       renderer.InvalidateRect(rect);
-      renderer.Render(window.Document as SvgDocument);
+      renderAndInvalidate();
+    }
 
-      if (surface != null)
-        Draw(surface, rect);
-      else 
+    public void DrawTo(IntPtr hdc) 
+    {
+      if ( !this.DesignMode )
       {
-        surface = CreateGraphics();
-        Draw(surface, rect);
-        surface.Dispose();
-        surface = null;
+        if ( window != null )
+        {
+          GraphicsWrapper gw = GraphicsWrapper.FromHdc(hdc, true);
+          GdiRenderer r = ((GdiRenderer)window.Renderer);
+          gw.Clear(r.BackColor);
+          r.GraphicsWrapper = gw;
+          window.Renderer.Render((SvgDocument)window.Document);
+          r.GraphicsWrapper = null;
+          gw.Dispose();
+        }
       }
-
-#if RELEASE	
-			}
-			catch(Exception e)
-			{
-				MessageBox.Show("An exception occured while rendering: " + e.Message);
-			}
-#endif
     }
 
     public void Draw(Graphics gr)
@@ -396,6 +427,212 @@
     }
     #endregion
 
+    #region Scripting Methods and Properties
+    private TypeDictionary scriptEngineByMimeType;
+    private Hashtable scriptEngines = new Hashtable();
+    
+    public void SetMimeTypeEngineType(string mimeType, Type engineType)
+    {
+      scriptEngineByMimeType[mimeType] = engineType;
+    }
+
+    public ScriptEngine GetScriptEngineByMimeType(string mimeType) 
+    {
+      ScriptEngine engine = null;
+
+      if (mimeType == "") 
+        mimeType = ((ISvgWindow)window).Document.RootElement.GetAttribute("contentScriptType");
+
+      if (mimeType == "" || mimeType == "text/ecmascript" || mimeType == "text/javascript" || mimeType == "application/javascript") 
+        mimeType = "application/ecmascript";
+
+      if (!scriptEngines.Contains(mimeType))
+      {
+        object[] args = new object[] { (window as ISvgWindow) };
+        engine = (ScriptEngine)scriptEngineByMimeType.CreateInstance(mimeType, args);
+        scriptEngines.Add(mimeType,engine);
+        engine.Initialise();
+      }
+                    
+      if (engine == null)
+        engine = (ScriptEngine) scriptEngines[mimeType];
+
+      return engine;
+    }
+
+
+    /// <summary>
+    /// Clears the existing script engine list from any previously running instances
+    /// </summary>
+    private void UnloadEngines() 
+    {
+      // Dispose of all running engines from previous document instances
+      foreach (string mimeType in scriptEngines.Keys) 
+      {
+        ScriptEngine engine = (ScriptEngine)scriptEngines[mimeType];
+        engine.Close();
+        engine = null;
+      }
+      // Clear the list
+      scriptEngines.Clear();
+      ClosureEventMonitor.Clear();
+      ScriptTimerMonitor.Reset();
+    }
+
+    /// <summary>
+    /// Add event listeners for on* events within the document
+    /// </summary>
+    private void InitializeEvents() 
+    {
+      SvgDocument document = (SvgDocument)window.Document;
+      document.NamespaceManager.AddNamespace("svg", "http://www.w3.org/2000/svg");
+        
+      XmlNodeList nodes = document.SelectNodes(@"//*[namespace-uri()='http://www.w3.org/2000/svg']
+                                                   [local-name()='svg' or
+                                                    local-name()='g' or
+                                                    local-name()='defs' or
+                                                    local-name()='symbol' or
+                                                    local-name()='use' or
+                                                    local-name()='switch' or
+                                                    local-name()='image' or
+                                                    local-name()='path' or
+                                                    local-name()='rect' or
+                                                    local-name()='circle' or
+                                                    local-name()='ellipse' or
+                                                    local-name()='line' or
+                                                    local-name()='polyline' or
+                                                    local-name()='polygon' or
+                                                    local-name()='text' or
+                                                    local-name()='tref' or
+                                                    local-name()='tspan' or
+                                                    local-name()='textPath' or
+                                                    local-name()='altGlyph' or
+                                                    local-name()='a' or
+                                                    local-name()='foreignObject']
+                                                /@*[name()='onfocusin' or
+                                                    name()='onfocusout' or
+                                                    name()='onactivate' or
+                                                    name()='onclick' or
+                                                    name()='onmousedown' or
+                                                    name()='onmouseup' or
+                                                    name()='onmouseover' or
+                                                    name()='onmousemove' or
+                                                    name()='onmouseout' or
+                                                    name()='onload']", document.NamespaceManager);
+        
+      foreach (XmlNode node in nodes) 
+      {
+        IAttribute att = (IAttribute)node;
+        IEventTarget targ = (IEventTarget)att.OwnerElement;
+        ScriptEventMonitor mon = new ScriptEventMonitor((VsaScriptEngine)GetScriptEngineByMimeType(""), att, window);
+        string eventName = null;
+        switch (att.Name) 
+        {
+          case "onfocusin":
+            eventName = "focusin";
+            break;
+          case "onfocusout":
+            eventName = "focusout";
+            break;
+          case "onactivate":
+            eventName = "activate";
+            break;
+          case "onclick":
+            eventName = "click";
+            break;
+          case "onmousedown":
+            eventName = "mousedown";
+            break;
+          case "onmouseup":
+            eventName = "mouseup";
+            break;
+          case "onmouseover":
+            eventName = "mouseover";
+            break;
+          case "onmousemove":
+            eventName = "mousemove";
+            break;
+          case "onmouseout":
+            eventName = "mouseout";
+            break;
+          case "onload":
+            eventName = "SVGLoad";
+            break;
+        }
+        targ.AddEventListener(eventName, new EventListener(mon.EventHandler), false);
+      }        
+    }
+
+    /// <summary>
    /// Collect the text in all script elements, build engine and execute. 
    /// </summary>
+    private void ExecuteScripts()
+    {
+      Hashtable codeByMimeType = new Hashtable();
+      StringBuilder codeBuilder;
+      SvgDocument document = (SvgDocument)window.Document;
+
+      XmlNodeList scripts = document.GetElementsByTagName("script", SvgDocument.SvgNamespace);
+      StringBuilder code = new StringBuilder();
+
+      foreach ( XmlElement script in scripts )
+      {
+        string type = script.GetAttribute("type");
+
+        if ( GetScriptEngineByMimeType(type) != null )
+        {
+          // make sure we have a StringBuilder for this MIME type
+          if ( !codeByMimeType.Contains(type) )
+            codeByMimeType[type] = new StringBuilder();
+
+          // grab this MIME type's codeBuilder
+          codeBuilder = (StringBuilder) codeByMimeType[type];
+
+          if ( script.HasChildNodes )
+          {
+            // process each child that is text node or a CDATA section
+            foreach ( XmlNode node in script.ChildNodes )
+            {
+              if ( node.NodeType == XmlNodeType.CDATA || node.NodeType == XmlNodeType.Text )
+              {
+                codeBuilder.Append(node.Value);
+              }
+            }
+          }
+          
+          if (script.HasAttribute("href", "http://www.w3.org/1999/xlink")) 
+          {
+            string href = script.GetAttribute("href", "http://www.w3.org/1999/xlink");
+            Uri baseUri = new Uri(((XmlDocument)((ISvgWindow)window).Document).BaseURI);
+            Uri hUri = new Uri(baseUri, href);
+            ExtendedHttpWebRequestCreator creator = new ExtendedHttpWebRequestCreator();            
+            ExtendedHttpWebRequest request = (ExtendedHttpWebRequest)creator.Create(hUri);
+            ExtendedHttpWebResponse response = (ExtendedHttpWebResponse)request.GetResponse();
+            Stream rs = response.GetResponseStream();
+            StreamReader sr = new StreamReader(rs);
+            codeBuilder.Append(sr.ReadToEnd());
+            rs.Close();            
+          }
+        }
+      }
+
+      // execute code for all script engines
+      foreach ( string mimeType in codeByMimeType.Keys )
+      {
+        codeBuilder = (StringBuilder) codeByMimeType[mimeType];
+
+        if ( codeBuilder.Length > 0 )
+        {
+          ScriptEngine engine = GetScriptEngineByMimeType(mimeType);
+          engine.Execute( codeBuilder.ToString() );
+        }
+      }
+
+      // load the root element
+      ((ISvgWindow)window).Document.RootElement.DispatchEvent(new Event("SVGLoad", false, true));
+    }
+
+    #endregion
+
+
     #region Component Designer generated code
     /// <summary> 
     /// Required method for Designer support - do not modify 
@@ -411,6 +648,8 @@
     /// </summary>
     protected override void Dispose( bool disposing )
     {
+      renderer.Dispose();
+      
       if( disposing )
       {
         if(components != null)

Index: SvgComponents.csproj
===================================================================
RCS file: /cvsroot/svgdomcsharp/SharpVectorGraphics/src/SvgComponents/SvgComponents.csproj,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -d -r1.14 -r1.15
--- SvgComponents.csproj	12 Sep 2005 15:08:23 -0000	1.14
+++ SvgComponents.csproj	19 Nov 2005 03:13:24 -0000	1.15
@@ -179,6 +179,21 @@
                     Project = "{FE34CBC0-D23C-4A95-BA64-83A031814010}"
                     Package = "{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"
                 />
+                <Reference
+                    Name = "Microsoft.Vsa"
+                    AssemblyName = "Microsoft.Vsa"
+                    HintPath = "..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Microsoft.Vsa.dll"
+                />
+                <Reference
+                    Name = "Microsoft.JScript"
+                    AssemblyName = "Microsoft.JScript"
+                    HintPath = "..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Microsoft.JScript.dll"
+                />
+                <Reference
+                    Name = "SharpVectorScripting"
+                    Project = "{2C56C191-EB9D-4658-84EE-73D2605896E6}"
+                    Package = "{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"
+                />
             </References>
         </Build>
         <Files>