workerscript.qml Example File | Qt Quick 5.9

Qt 5.9 | Qt Quick | Qt Quick Examples - Threading | workerscript.qml Example File

Qt 5.9.2 Reference Documentation

# workerscript.qml Example File

threading/workerscript/workerscript.qml

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
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      ** This file is part of the examples of the Qt Toolkit.
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      import QtQuick 2.0

      Rectangle {
          width: 320; height: 480

          WorkerScript {
              id: myWorker
              source: "workerscript.js"

              onMessage: {
                  if (messageObject.row == rowSpinner.value && messageObject.column == columnSpinner.value){ //Not an old result
                      if (messageObject.result == -1)
                          resultText.text = "Column must be <= Row";
                      else
                          resultText.text = messageObject.result;
                  }
              }
          }
          Row {
              y: 24
              spacing: 24
              anchors.horizontalCenter: parent.horizontalCenter
              Spinner {
                  id: rowSpinner
                  label: "Row"
                  onValueChanged: {
                      resultText.text = "Loading...";
                      myWorker.sendMessage( { row: rowSpinner.value, column: columnSpinner.value } );
                  }
              }

              Spinner {
                  id: columnSpinner
                  label: "Column"
                  onValueChanged: {
                      resultText.text = "Loading...";
                      myWorker.sendMessage( { row: rowSpinner.value, column: columnSpinner.value } );
                  }
              }
          }

          Text {
              id: resultText
              y: 180
              width: parent.width
              horizontalAlignment: Text.AlignHCenter
              wrapMode: Text.WordWrap
              font.pixelSize: 32
          }

          Text {
              text: "Pascal's Triangle Calculator"
              anchors { horizontalCenter: parent.horizontalCenter; bottom: parent.bottom; bottomMargin: 50 }
          }
      }