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--- sample_code:unit_convert [2014/11/01 12:45]
106.77.65.188 [Unit Converter]
+++ sample_code:unit_convert [2014/11/01 20:55]
@@ Line 1: / Line 1: @@
-====== Unit Converter ======
-Simplistic demo of how a unit-converter app could be built.Supports two quantities.
-===== The code =====
-<code javascript unit_convert.js>
-var unitval = [];
-unitval ["mm"] = 1;
-unitval ["m"] = 1000;
-unitval ["km"] =1000000;
-//Called when application is started.
-function OnStart()
-{
-    //Create a horizontal layout.
-    lay = app.CreateLayout( "linear", "Horizontal,FillXY" );
-    edt = app.CreateTextEdit("100",0.23, -1, "Number");
-    edt.SetTextSize(12);
-    edt.SetOnChange(docalc);
-    spinfrom = app.CreateSpinner("Unit,mm,m,km",0.23);
-    spinfrom.SetOnTouch(docalc);
-    spinto = app.CreateSpinner("Unit,mm,m,km",0.23);
-    spinto.SetOnTouch(docalc);
-    txt = app.CreateText( "????",0.23 );
-    txt.SetTextSize( 12 );
-    lay.AddChild(edt);
-    lay.AddChild(spinfrom);
-    lay.AddChild(spinto);
-    lay.AddChild( txt );
-    //Add layout to app.
-    app.AddLayout( lay );
-}
-function docalc(){
-  qty = edt.GetText();
-  if(spinfrom.GetText() == "Unit" ||
-     spinto.GetText() == "Unit" ||
-     !isNumber(qty)){
-     txt.SetText("????")
-     return;
-  }
-  var a = unitval[spinfrom.GetText()];
-  var b = unitval[spinto.GetText()];
-  var res = qty * a / b;
-  txt.SetText(res);
-}
-function isNumber(n) {
-  return !isNaN(parseFloat(n)) && isFinite(n);
-}
-</code>
-===== Note =====
-This app is in no way the sort that anyone might wish to use in real life.
-It is just a very simplistic demo of the type of approach that might be taken.

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