UI: DoubleSpinBox: Don't auto-focus on wheel event

src/ui/FortFirewallUI.pro

@@ -40,6 +40,7 @@ SOURCES += \
     form/controls/clickablemenu.cpp \
     form/controls/combobox.cpp \
     form/controls/controlutil.cpp \
+    form/controls/doublespinbox.cpp \
     form/controls/labelcolor.cpp \
     form/controls/labeldoublespin.cpp \
     form/controls/labelspin.cpp \
@@ -231,6 +232,7 @@ HEADERS += \
     form/controls/clickablemenu.h \
     form/controls/combobox.h \
     form/controls/controlutil.h \
+    form/controls/doublespinbox.h \
     form/controls/labelcolor.h \
     form/controls/labeldoublespin.h \
     form/controls/labelspin.h \

src/ui/form/controls/doublespinbox.cpp

@@ -0,0 +1,18 @@
+#include "doublespinbox.h"
+
+#include <QWheelEvent>
+
+DoubleSpinBox::DoubleSpinBox(QWidget *parent) : QDoubleSpinBox(parent)
+{
+    setFocusPolicy(Qt::StrongFocus);
+}
+
+void DoubleSpinBox::wheelEvent(QWheelEvent *e)
+{
+    if (!hasFocus()) {
+        e->ignore();
+        return;
+    }
+
+    QDoubleSpinBox::wheelEvent(e);
+}

src/ui/form/controls/doublespinbox.h

@@ -0,0 +1,17 @@
+#ifndef DOUBLESPINBOX_H
+#define DOUBLESPINBOX_H
+
+#include <QDoubleSpinBox>
+
+class DoubleSpinBox : public QDoubleSpinBox
+{
+    Q_OBJECT
+
+public:
+    explicit DoubleSpinBox(QWidget *parent = nullptr);
+
+protected:
+    void wheelEvent(QWheelEvent *e) override;
+};
+
+#endif // DOUBLESPINBOX_H

src/ui/form/controls/labeldoublespin.cpp

@@ -1,10 +1,10 @@
 #include "labeldoublespin.h"
 
-#include <QDoubleSpinBox>
 #include <QHBoxLayout>
 #include <QLabel>
 
 #include "controlutil.h"
+#include "doublespinbox.h"
 
 LabelDoubleSpin::LabelDoubleSpin(QWidget *parent) : QWidget(parent)
 {
@@ -29,7 +29,7 @@ void LabelDoubleSpin::setupUi()
 
 void LabelDoubleSpin::setupSpin()
 {
-    m_spinBox = new QDoubleSpinBox();
+    m_spinBox = new DoubleSpinBox();
     m_spinBox->setMinimumWidth(110);
     m_spinBox->setRange(0, 9999);
 }