Use indicator overlays for status bar icons

src/qt/qt_iconindicators.cpp

@@ -0,0 +1,33 @@
+#include <QSize>
+#include <QPainter>
+#include "qt_iconindicators.hpp"
+
+QIcon
+getIndicatorIcon(IconIndicator indicator)
+{
+    switch (indicator) {
+        case Active:
+            return QIcon(":/settings/qt/icons/active.ico");
+        case Disabled:
+            return QIcon(":/settings/qt/icons/disabled.ico");
+        default:
+            return QIcon();
+    }
+}
+
+QPixmap
+getIconWithIndicator(const QIcon &icon, const QSize &size, QIcon::Mode iconMode, IconIndicator indicator)
+{
+    auto iconPixmap = icon.pixmap(size, iconMode);
+
+    if (indicator == None)
+        return iconPixmap;
+
+    auto painter = QPainter(&iconPixmap);
+    auto indicatorPixmap = getIndicatorIcon(indicator).pixmap(size);
+
+    painter.drawPixmap(0, 0, indicatorPixmap);
+    painter.end();
+
+    return iconPixmap;
+}