Mercurial > bmsapp / file diff

--- a/src/ChartCarbonate.cpp	Tue Jul 26 11:15:37 2022 +0200
+++ b/src/ChartCarbonate.cpp	Tue Jul 26 14:26:50 2022 +0200
@@ -15,6 +15,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include "ChartCarbonate.h"
+#include "callout.h"
 #include "MainWindow.h"
 
 
@@ -31,16 +32,20 @@
     dialog->setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint);
     dialog->resize(1024, 600);
 
+    QPushButton *saveButton = new QPushButton(tr("Save"));
+    saveButton->setAutoDefault(false);
+    QIcon icon1;
+    icon1.addFile(QString::fromUtf8(":icons/silk/disk.png"), QSize(), QIcon::Normal, QIcon::Off);
+    saveButton->setIcon(icon1);
+
     QDialogButtonBox *buttonBox = new QDialogButtonBox(dialog);
     buttonBox->setObjectName(QString::fromUtf8("buttonBox"));
-    buttonBox->setGeometry(QRect(40, 565, 944, 36));
-    buttonBox->setLayoutDirection(Qt::LeftToRight);
-    buttonBox->setOrientation(Qt::Horizontal);
+    buttonBox->setOrientation(Qt::Vertical);
     buttonBox->setStandardButtons(QDialogButtonBox::Ok);
-    buttonBox->setCenterButtons(true);
+    buttonBox->addButton(saveButton,QDialogButtonBox::ActionRole);
 
-    QSplineSeries *temperature = new QSplineSeries();
-    QSplineSeries *pressure = new QSplineSeries();
+    temperature = new QSplineSeries();
+    pressure = new QSplineSeries();
 
     query.prepare("SELECT * FROM log_co2pressure WHERE code=:code ORDER BY datetime");
     query.bindValue(":code", code);
@@ -58,7 +63,7 @@
     pen.setWidth(3);
     pressure->setPen(pen);
 
-    QChart *chart = new QChart();
+    chart = new QChart();
     chart->setTitle(QString("%1 \"%2\"").arg(code).arg(name));
     chart->addSeries(temperature);
     chart->addSeries(pressure);
@@ -90,14 +95,20 @@
     chart->addAxis(axisYP, Qt::AlignLeft);
     pressure->attachAxis(axisYP);
 
-    QChartView *chartView = new QChartView(chart);
+    chart->setAcceptHoverEvents(true);
+
+    connect(temperature, &QSplineSeries::hovered, this, &ChartCarbonate::tooltip);
+    connect(pressure, &QSplineSeries::hovered, this, &ChartCarbonate::tooltip);
+
+    chartView = new QChartView(chart);
     chartView->setRenderHint(QPainter::Antialiasing);
-    dialog->setLayout(new QVBoxLayout);
+    dialog->setLayout(new QHBoxLayout);
     dialog->layout()->addWidget(chartView);
     dialog->layout()->addWidget(buttonBox);
 
     QObject::connect(buttonBox, SIGNAL(accepted()), dialog, SLOT(accept()));
     QObject::connect(buttonBox, SIGNAL(rejected()), dialog, SLOT(reject()));
+    QObject::connect(saveButton, SIGNAL(clicked()), this, SLOT(savePNG()));
 
     dialog->setModal(true);
     dialog->exec();
@@ -106,3 +117,43 @@
 
 ChartCarbonate::~ChartCarbonate() {}
 
+
+void ChartCarbonate::savePNG()
+{
+    QString path = QFileDialog::getSaveFileName(this, tr("Save Image"), QDir::homePath() + "/carbonation.png", tr("Image (*.png)"));
+    if (path.isEmpty()) {
+	QMessageBox::warning(this, tr("Save File"), tr("No image file selected."));
+	return;
+    }
+
+    QImage img((chartView->size()), QImage::Format_ARGB32);
+    QPainter painter;
+    painter.begin(&img);
+    chartView->render(&painter);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.end();
+    img.save(path);
+}
+
+
+void ChartCarbonate::tooltip(QPointF point, bool state)
+{
+    QAbstractSeries *series = qobject_cast<QAbstractSeries *>(sender());
+
+    if (t_tooltip == 0)
+        t_tooltip = new Callout(chart, series);
+
+    if (state) {
+	QDateTime timeis = QDateTime::fromMSecsSinceEpoch(point.x());
+	QString suffix = (series == temperature) ? "°C":" bar";
+	t_tooltip->setSeries(series);
+	t_tooltip->setText(QString("%1\n%2%3").arg(timeis.toString("dd-MM-yyyy hh:mm")).arg(point.y(), 2, 'f', 1).arg(suffix));
+	t_tooltip->setAnchor(point);
+	t_tooltip->setZValue(11);
+	t_tooltip->updateGeometry();
+	t_tooltip->show();
+    } else {
+	t_tooltip->hide();
+    }
+}
+