Script Fragments

One other useful application for fragments is a common repository for Lua scripts. In the following example, I have created a fragment that contains a function that can be used to draw an arbitrary square on a plot. With the fragment included at the base level of the document, any of the scripts in the document gain the ability to call the drawSquare function and pass it a data series and the square properties. In this example, the button creates a square using the fragment:

document.xml

<!-- Section 1 -->
<section name="section1">

    <xyPlot name="myPlot" xmax="10" xmin="0" ymax="10" ymin="0" xauto="fixed"  yauto="fixed">
        <series name="Series" manual="true"></series>
    </xyPlot>

    <button name="myButton" content="Draw Square">
        <onClick>
            drawSquare(myPlot.Series, 8, 8, 5, 5);
        </onClick>
    </button>
</section>

fragment3.xml

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns="http://resources.qdexapps.com/schema/v1/QDocument.xsd">

  <script>
    function drawSquare(series, width, height, x, y)
    series:Add(x - width/2, y + height/2);
    series:Add(x + width/2, y + height/2);
    series:Add(x + width/2, y - height/2);
    series:Add(x - width/2, y - height/2);
    series:Add(x - width/2, y + height/2);
    series:Update();
    end
  </script>
</fragment>

which generates the following plot when the button is pressed.