Seer handles dark/light color theme changes. Especially for Icons.

src/SeerArrayVisualizerWidget.cpp

@@ -13,7 +13,8 @@
 #include <QtWidgets/QFileDialog>
 #include <QtWidgets/QToolTip>
 #include <QtGui/QIntValidator>
-#include <QtGui/QIcon>
+#include <QtGui/QGuiApplication>
+#include <QtGui/QStyleHints>
 #include <QtPrintSupport/QPrinter>
 #include <QtPrintSupport/QPrintDialog>
 #include <QtCore/QRegularExpression>
@@ -43,7 +44,6 @@ SeerArrayVisualizerWidget::SeerArrayVisualizerWidget (QWidget* parent) : QWidget
     setupUi(this);
 
     // Setup the widgets
-    setWindowIcon(QIcon(":/seer/resources/icons/hicolor/64x64/seergdb.png"));
     setWindowTitle("Seer Array Visualizer");
     setAttribute(Qt::WA_DeleteOnClose);
 
@@ -106,6 +106,11 @@ SeerArrayVisualizerWidget::SeerArrayVisualizerWidget (QWidget* parent) : QWidget
     QObject::connect(labelsCheckBox,                &QCheckBox::clicked,                                       this,            &SeerArrayVisualizerWidget::handleLabelsCheckBox);
     QObject::connect(lineTypeButtonGroup,           QOverload<int>::of(&QButtonGroup::idClicked),              this,            &SeerArrayVisualizerWidget::handleLineTypeButtonGroup);
     QObject::connect(printPushButton,               &QPushButton::clicked,                                     arrayChartView,  &QZoomChartView::printView);
+    QObject::connect(QGuiApplication::styleHints(), &QStyleHints::colorSchemeChanged,                          this,            &SeerArrayVisualizerWidget::handleThemeChanged);
+
+    // Colorize icons for theme.
+    Seer::colorizeAllIcons(this);
+    Seer::colorizeChartViewItem(arrayChartView);
 
     // Restore window settings.
     readSettings();
@@ -1077,6 +1082,15 @@ void SeerArrayVisualizerWidget::handleLineTypeButtonGroup () {
     handleDataChanged();
 }
 
+void SeerArrayVisualizerWidget::handleThemeChanged () {
+
+    // Colorize icons for theme.
+    Seer::colorizeAllIcons(this);
+
+    // And the ChartView.
+    Seer::colorizeChartViewItem(arrayChartView);
+}
+
 void SeerArrayVisualizerWidget::createASeries() {
 
     if (scatterRadioButton->isChecked()) {