1 files changed, 139 insertions, 0 deletions
diff --git a/src/cpp/lineGraph.cpp b/src/cpp/lineGraph.cpp
new file mode 100644
index 0000000..be6fd86
--- /dev/null
+++ b/src/cpp/lineGraph.cpp
@@ -0,0 +1,139 @@
+/*
+ * 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 "lineGraph.h"
+
+#include <QPainter>
+#include <QDate>
+#include <QFile>
+#include <QVector>
+#include <QSettings>
+#include <QStandardPaths>
+#include <QPointF>
+
+LineGraph::LineGraph()
+{
+    setFlag(ItemHasContents, true);
+    setAntialiasing(true);
+    setRenderTarget(QQuickPaintedItem::FramebufferObject);
+}
+
+void LineGraph::paint(QPainter *painter)
+{
+    if (!m_fileLoadStatus) {
+        return;
+    }
+    int j = m_filedata.count();
+    QPointF points[j];
+    if (!graphRelative) {
+        minValue = 0;
+    }
+    float valueDelta = maxValue - minValue;
+    float timeDelta = maxTime - minTime;
+    float calculatedValue = 0;
+    float calculatedTimeSeconds = 0;
+    for(int i = 0; i < j; i++) {
+        calculatedTimeSeconds = (m_filedata[i].x() - minTime)/timeDelta;
+        calculatedValue = 1 - (m_filedata[i].y() - minValue)/valueDelta;
+        points[i] = QPointF(m_lineWidth + calculatedTimeSeconds*(width()-2*m_lineWidth), m_lineWidth + calculatedValue*(height()-2*m_lineWidth)); //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.
+    }
+    QPen pen;
+    pen.setCapStyle(Qt::RoundCap);
+    pen.setJoinStyle(Qt::RoundJoin);
+    pen.setWidthF(m_lineWidth);
+    pen.setColor(m_color);
+    painter->setRenderHints(QPainter::Antialiasing);
+    painter->setPen(pen);
+    painter->drawPolyline(points,j);
+}
+
+void LineGraph::loadGraphData(QVariant fileDataInput) {
+    qDebug() << "loadGraphData called";
+    QList<QVariant> fileDataAsList = fileDataInput.toList();
+    if (fileDataAsList.count() < 1) {
+        qDebug() << "no heartrate data to show, failing load";
+        return;
+    }
+    int j = fileDataAsList.count();
+    minTime = fileDataAsList[0].toPoint().x();
+    maxTime = fileDataAsList[j-1].toPoint().x();
+    minValue = fileDataAsList[0].toPoint().y();
+    maxValue = minValue;
+    m_filedata.clear();
+    for(int i = 0; i < j; i++) {
+        m_filedata.append(fileDataAsList[i].toPoint());
+        if (minValue > m_filedata[i].y()) minValue = m_filedata[i].y();
+        if (maxValue < m_filedata[i].y()) maxValue = m_filedata[i].y();
+    }
+    emit loadingDone();
+    update();
+}
+
+void LineGraph::setLineColor(QColor color) {
+    m_color = color;
+    update();
+}
+
+QColor LineGraph::lineColor() {
+    return m_color;
+}
+
+void LineGraph::setLineWidth(float width) {
+    m_lineWidth = width;
+    update();
+}
+
+float LineGraph::lineWidth() {
+    return m_lineWidth;
+}
+
+int LineGraph::getMaxValue() {
+    return maxValue;
+}
+
+int LineGraph::getMinValue() {
+    return minValue;
+}
+
+QDateTime LineGraph::getMaxTime() {
+    return QDateTime::fromSecsSinceEpoch(maxTime);
+}
+
+QDateTime LineGraph::getMinTime() {
+    return QDateTime::fromSecsSinceEpoch(minTime);
+}
+
+bool LineGraph::relative() {
+    return graphRelative;
+}
+
+void LineGraph::setRelative(bool newRelative) {
+    graphRelative = newRelative;
+}