Support of QML and HTML Widgets on iOS

[cxcandid]

It should be technically possible to support QML and HTML widgets in attribute forms on iOS, as QField already demonstrates.

I really don't want to fan a flame here, but it would be nice if you could support something like the following that works in QGIS and QField.

QML Widget:

import QtQuick 2

Loader {
  id: loader
  width:300;height:30
  
  function getJSON(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'json';
    xhr.onload = function() {
      var status = xhr.status;
      if (status === 200) {
        callback(null, xhr.response);
      } else {
        callback(status, xhr.response);
      }
    };
    xhr.send();
  }

  sourceComponent: Text {
    id: elev
    text: getJSON('https://voibos.rechenraum.com/voibos/voibos?name=hoehenservice&Koordinate='+expression.evaluate("x(transform(@geometry,'EPSG:3857','EPSG:31255'))")+','+expression.evaluate("y(transform(@geometry,'EPSG:3857','EPSG:31255'))")+'&CRS=31255',function(err, data) {if (err == null) { elev.text = data.hoeheDTM.toFixed(2).concat('m'); } else { elev.text = 'Error'}})
  }
}

HTML Widget:

<h1 id="elev"/>
<script>
function getJSON(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'json';
    xhr.onload = function() {
      var status = xhr.status;
      if (status === 200) {
        callback(null, xhr.response);
      } else {
        callback(status, xhr.response);
      }
    };
    xhr.send();
};
getJSON('https://voibos.rechenraum.com/voibos/voibos?name=hoehenservice&Koordinate='+expression.evaluate("\"x\"")+','+expression.evaluate("\"y\"")+'&CRS=31255',
function(err, data) {
  if (err == null) {
    document.getElementById("elev").innerHTML = data.hoeheDTM.toFixed(2).concat('m');
  }
});
</script>

[VitorVieiraZ]

Hello @cxcandid , thanks for the report. Currently, we already have support for HTML widgets and you can use them normally on iOS. QML widgets, on the other hand, are still not available in the app at the moment.