Qt 5.7 | Qt Quick | Qt Quick Examples - Threading | workerscript.js Example File

Qt 5.7.1 Reference Documentation

# workerscript.js Example File

threading/workerscript/workerscript.js

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      //Will be initialized when WorkerScript{} is instantiated
      var cache = new Array(64);
      for (var i = 0; i < 64; i++)
          cache[i] = new Array(64);

      function triangle(row, column) {
          if (cache[row][column])
              return cache[row][column]
          if (column < 0 || column > row)
              return -1;
          if (column == 0 || column == row)
              return 1;
          return triangle(row-1, column-1) + triangle(row-1, column);
      }
      WorkerScript.onMessage = function(message) {
          //Calculate result (may take a while, using a naive algorithm)
          var calculatedResult = triangle(message.row, message.column);
          //Send result back to main thread
          WorkerScript.sendMessage( { row: message.row,
                                      column: message.column,
                                      result: calculatedResult} );
      }