- Qt 5.5
- Qt Bluetooth
- Bluetooth Low Energy Heart Listener Example
- draw.js Example File
- Qt 5.5.1 Reference Documentation

# draw.js Example File

heartlistener/assets/draw.js

    /***************************************************************************
    **
    ** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the QtBluetooth module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    var component;
    var size = 0;
    var counter = 0;
    var difference = 0;

    function start() {
        size = heartRate.measurementsSize();
        difference = (plot.width-topbar.width)/size;
        console.log(size +" "+ plot.width);
        for (var i = 0; i< size; i++) {
            var value = heartRate.measurements(i);

            drawIt(value);
            counter++;
        }
    }

    function drawIt(value) {
        if (component == null)
               component = Qt.createComponent("Point.qml");
        if (component.status == Component.Ready) {
            var dynamicObject = component.createObject(plot);
                    if (dynamicObject == null) {
                        console.log("error creating block");
                        console.log(component.errorString());
                        return false;
                    }
                    dynamicObject.x = 10+(counter*difference);
                    console.log(plot.height)
                   dynamicObject.y = plot.height -value;

        }
    }