Screen Readers - ATs | Accessibility

<Lines Version=1.0>
<Line Left=X1, Top=Y1, Right=X2, Bottom=Y2>
<Span Source=”OCR” Font=Name Size=Pts Bold=On Italic=On Underline=On ... color=hex, 
  background=hex controlType=type ControlState=state>text inside span</Span><Span>...</Span>...
<CharLocations><Char x=XCoord Y=YCoord>...</CharLocations></Line>
...
</Lines>

All content is placed within a Lines element with a Version attribute. The Lines element contains one or more Line elements representing each Line of text in the specified rectangle. Each Line element has attributes describing its encapsulating rectangle. Each Line element contains one or more Span elements containing text with the same font/attribute/color/source/controltype.

Attributes are only included if on. For example, if the text in a Span is not italicized, the Italic attribute will not be included in the xml. If text in a Span is bolded, the Span will contain an attribute (Bold=on).

After all the Spans on a line, as the last child of the Line node, a CharLocations element encloses a list of Char elements for each character on the line (within the specified rectangle’s bounds), specifying the click point for each character in the line or line segment.

The example script below shows how to use the msxml 6.0 object to parse the screen xml into a dom tree to be interacted with via XPath:

A sample test script is given below to demonstrate how to use the MSXML 6.0 object to parse the screen XML into a DOM tree and then interact with its DOM.

   script test()
   var object msxml = CreateObject("msxml2.DOMDocument.6.0")
   if (!msxml)
   SayString("no MSXML")
   return
   EndIf
   msxml.async = false;
   msxml.resolveExternals = false;
   msxml.loadXML(GetScreenXML()) ; Obtain the XML from the screen and/or OCRed text.
   var object results = msxml.SelectNodes("//Span") ; Get list of all spans
   if (!results)
   sayString("no results")
   return
   EndIf
   var object node
   foreach node in results
   var object attribs = node.attributes
   if (!attribs)
   SayString("no attribs")
   EndIf
   if attribs.GetNamedItem("Source").nodeValue=="OCR" then
   ;This text is from OCR
           sayUsingVoice(VCTX_MESSAGE, node.text, OT_SCREEN_MESSAGE) 
   else
   ;This is from the OSM
           saystring(node.text)
   endIf
   EndForeach
   ;SayString(result.nodename)
   ;SayString(result.nodevalue)
   endScript

(JAWS) Enhancements in Scripting

JAWS Scripts

• Scripts for jaws for Windows
• jwm Lite
• Chatterbox Scripts
• Jaws Scripts and Programs
• jfw Scripts
• JAWS Script Exchange (jsx) open source program intended to assist/promote sharing of scripts among users of JAWS.
• Everything You Always Wanted to Know About Writing JAWS Scripts, But Didn't Know Whom to Ask

JAWS Scripting References

• JAWS for Windows Screen Reading Software
• Screen Reading Software Documentation
• Scripting in JAWS
• JAWS Software documentation