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Silverlight 1.0 Full JavaScript Intellisense

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21 Dec 2007Ms-PL11 min read 31.9K   141   17  
An article about Silverlight 1.0 full JavaScript Intellisense
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<title>StylusPointCollection Object</title>
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<p><span class="betaboilerplate"><font color="gray" pointsize="8.5"
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<h1><a name=
"silverlight_styluspointcollection_object"></a>StylusPointCollection
Object</h1>

<div id="mainSection">
<div id="mainBody">
<p>Represents a set of related <a href=
"o_styluspoint.htm">StylusPoint</a> objects.</p>

<h4>Syntax</h4>

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<th class="syntaxblocklanguage" nowrap="nowrap" style=
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<div class="codesyntax" style=
"font-family: 'Courier New', Courier, monospace;">
&lt;<b>StylusPointCollection</b> .../&gt;</div>
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<table id="scriptingSyntaxBlock">
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<th class="syntaxblocklanguage" nowrap="nowrap" style=
"width: 150px; background: #EEEEEE; vertical-align: top;">
Scripting</th>
<td class="syntaxblockcode" style="background:white;">
<div class="codesyntax">To create an object using scripting, see
<a href=
"m_silverlightcontrol_createfromxaml.htm">CreateFromXAML</a>.</div>
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<h4>Properties</h4>

<p><a href="p_collection_count.htm">Count</a>
</p>

<h4>Methods</h4>

<p><a href="m_collection_add.htm">Add</a>, <a href=
"m_styluspointcollection_addstyluspoints.htm">AddStylusPoints</a>,
<a href="m_collection_clear.htm">Clear</a>, <a href=
"m_collection_getitem.htm">GetItem</a>, <a href=
"m_dependencyobject_getvalue.htm">GetValue</a>, <a href=
"m_collection_insert.htm">Insert</a>, <a href=
"m_collection_remove.htm">Remove</a>, <a href=
"m_collection_removeat.htm">RemoveAt</a>, <a href=
"m_dependencyobject_setvalue.htm">SetValue</a></p>

<h4>Events</h4>

<h4>Remarks</h4>

<p>This collection is used primarily by the <a href=
"o_stroke.htm">Stroke</a> class to keep track of the <a href=
"o_styluspoint.htm">StylusPoint</a> objects that make up the
<a href="o_stroke.htm">Stroke</a> object.</p>

<p>A <a href=
"o_styluspointcollection.htm">StylusPointCollection</a> can belong
to more than one <a href="o_stroke.htm">Stroke</a> object.</p>

<h4>Example</h4>

<div class="snippetdistributor_codesnippet" id=
"erase_ink_snip#EraseInk">
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"border: 1px solid #999999; background: #CCCCCC; width: 99%;">
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<th class="codelanguagecell" style=
"background: #CCCCCC; text-align: left;">JavaScript</th>
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<pre class="codeblock" style=
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// Inking variables
var agCtrl;
var inkPresenter; // Corresponds to InkPresenter element in XAML
var newStroke = null; // The Stroke variable we'll use here in mouse handlers

function root_Loaded(sender, args)
{
  // Get the html object which contains the Silverlight plugin.
  agCtrl = sender.GetHost();

  // hold on to the InkPresenter plugin interface
  inkPresenter = sender.findname("inkPresenterElement");
}

// Capture mouse and create the stroke
function InkPresenterMouseDown(sender,args)
{
  inkPresenter.CaptureMouse();

  // Erase mode?
  if (args.GetStylusInfo().IsInverted)
  {
    var sc = agCtrl.content.createFromXaml("&lt;StrokeCollection/&gt;");
    sc = inkPresenter.Strokes.HitTest(args.GetStylusPoints(inkPresenter));
    
    for (var i = 0; i &lt; sc.Count; i++)
    {
      inkPresenter.Strokes.Remove(sc.GetItem(i));
    }
  }
  else // Ink mode
  {
    newStroke = agCtrl.content.createFromXaml('&lt;Stroke/&gt;');

    var da = agCtrl.content.createFromXaml('&lt;DrawingAttributes/&gt;');
    newStroke.DrawingAttributes = da;
    var spc = agCtrl.content.createFromXaml('&lt;StylusPointCollection/&gt;');
    newStroke.StylusPoints = spc;

    newStroke.DrawingAttributes.Width = 5;
    newStroke.DrawingAttributes.Height = 5;
    newStroke.DrawingAttributes.Color = "Green";
    newStroke.DrawingAttributes.OutlineColor = "Black";

    newStroke.StylusPoints.AddStylusPoints(args.GetStylusPoints(inkPresenter));
    inkPresenter.Strokes.Add(newStroke);
  }
}

// Add the new points to the Stroke we're working with or 
// delete strokes if stylus is inverted. Thus, implementing back of pen erase.
function InkPresenterMouseMove(sender,args)
{
  // Erase mode?
  if (args.GetStylusInfo().IsInverted)
  {
    // Use HitTest to get all the strokes that were intersected
    var hitStrokes = inkPresenter.Strokes.HitTest(args.GetStylusPoints(inkPresenter));

    // Remove the strokes that were intersected above
    for (var i = 0; i &lt; hitStrokes.Count; i++)
    {
      inkPresenter.Strokes.Remove(hitStrokes.GetItem(i));
    }
  }
  else
  {
    if (newStroke != null)
    {
      newStroke.StylusPoints.AddStylusPoints(args.GetStylusPoints(inkPresenter));
    }
  }
}

// Release the mouse
function InkPresenterMouseUp(sender,args)
{
  newStroke = null;
  inkPresenter.ReleaseMouseCapture();
}

function ClearInkMouseDown(sender,args)
{
  inkPresenter.Strokes.Clear();
}
</pre>
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<h4>See Also</h4>

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Written By
JustinAngel.Net, Senior .Net consultant
Israel Israel
Justin-Josef Angel is a C# Microsoft Most Valuable professional, a Senior .Net consultant in Israel with 4 years of .Net experience and has 8 years of Web experience.

Justin's been working this past year on two Enterprise sized Silverlight projects with his customers. During that time he's gained a real-insight into Silverlight's inner workings and how to integrate Silverlight into the real world of software development. Additionally, During that time he's developed a few well-known projects like the "Silverlight 1.0 Javascript Intellisense", "Silverlight 1.1 Hebrew & Arabic Languages support" and a few others you might know.

Justin is also a seasoned presenter with an impressive track-record of talking in front of thousands of people in Israel.

Justin owns the first .Net blog written in Hebrew - http://www.JustinAngel.Net .
And he also owns an additional blog with mixed Hebrew & English content - http://blogs.Microsoft.co.il/blogs/JustinAngel.

A full list of his articles (all 100+ of them) can be found at: http://www.JustinAngel.Net/#index




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