Add heartrate graph

1 files changed, 102 insertions, 0 deletions

diff --git a/qmlplugin/hrGraph.cpp b/qmlplugin/hrGraph.cpp
new file mode 100644
index 0000000..7540083
--- /dev/null
+++ b/qmlplugin/hrGraph.cpp
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2023 Arseniy Movshev <dodoradio@outlook.com>
+ *               2017 Florent Revest <revestflo@gmail.com>
+ * All rights reserved.
+ *
+ * You may use this file under the terms of 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 author 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 HOLDERS 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.
+ */
+
+#include "hrGraph.h"
+#include "stepsDataLoader.h"
+
+#include <QPainter>
+#include <QDate>
+#include <QFile>
+#include <QVector>
+#include <QSettings>
+#include <QStandardPaths>
+
+HrGraph::HrGraph()
+{
+    setFlag(ItemHasContents, true);
+    setRenderTarget(QQuickPaintedItem::FramebufferObject);
+    loadGraphData();
+}
+
+void HrGraph::paint(QPainter *painter)
+{
+    if (!m_fileLoadStatus) {
+        return;
+    }
+    int j = m_filedata.count();
+    QPointF points[j];
+    float valueDelta = maxHrValue - minHrValue;
+    float timeDelta = maxTime - minTime;
+    float calculatedValue = 0;
+    float calculatedTimeSeconds = 0;
+    for(int i = 0; i < j; i++) {
+        calculatedTimeSeconds = (m_filedata.at(i).time - minTime)/timeDelta;
+        calculatedValue = 1 - (m_filedata.at(i).value - minHrValue)/valueDelta;
+        points[i] = QPointF(1 + calculatedTimeSeconds*(height()-2), 1 + calculatedValue*(width()-2)); //these +2 -1 are here to make sure that the graph fits within the drawn area, as it will be clipped by qt if it doesn't.
+    }
+    painter->drawPolyline(points,j);
+}
+
+void HrGraph::loadGraphData(QDate date) {
+    m_fileLoadStatus = false;
+    QFile file(fileNameForDate(date, "heartrateSensor"));
+    if (!file.open(QIODevice::ReadWrite | QIODevice::Text)) {
+        qDebug() << "failed to open file";
+        return;
+    }
+    m_fileLoadStatus = true;
+    QTextStream inStream(&file);
+    QString line;
+    int i = 0;
+    int currTime;
+    int currValue;
+    m_filedata.clear();
+    while(!inStream.atEnd())
+    {
+        line = inStream.readLine();
+        currTime = line.split(":")[0].toInt();
+        currValue = line.split(":")[1].toInt();
+        HrDatapoint datapoint;
+        datapoint.time = currTime;
+        datapoint.value = currValue;
+        m_filedata.append(datapoint);
+        if(i == 0) {
+            minTime = currTime;
+            maxHrValue = currValue;
+            minHrValue = currValue;
+        }
+        if(currValue > maxHrValue) { maxHrValue = currValue; }
+        if(currValue < minHrValue) { minHrValue = currValue; }
+        i++;
+    }
+    maxTime = currTime;
+    qDebug() << "heartrate graph file loading done";
+    file.close();
+}