MISC: Mark widget's constructors explicit

src/AudioVisualizer.h

@@ -13,7 +13,7 @@ class AudioVisualizer final : public QWidget {
     Q_OBJECT
 
 public:
-    AudioVisualizer(QWidget *parent = nullptr) noexcept;
+    explicit AudioVisualizer(QWidget *parent = nullptr) noexcept;
     ~AudioVisualizer() noexcept = default;
 
     static AudioVisualizer *fromFile(const QString &);

src/DialogHelp.h

@@ -12,7 +12,7 @@ class DialogHelp final : public QMessageBox {
     Q_OBJECT
 
 public:
-    DialogHelp(QWidget *parent = nullptr) noexcept;
+    explicit DialogHelp(QWidget *parent = nullptr) noexcept;
     ~DialogHelp() noexcept = default;
 
 private:

src/MainWindow.h

@@ -18,7 +18,7 @@ class MainWindow final : public QMainWindow {
     VivyDocumentStore documentStore;
 
 public:
-    MainWindow(QWidget *parent = nullptr) noexcept;
+    explicit MainWindow(QWidget *parent = nullptr) noexcept;
     ~MainWindow() noexcept = default;
 
 private slots:

src/TimingBar.h

@@ -11,7 +11,7 @@
 
 class TimingBar final : public QGraphicsLineItem {
 public:
-    TimingBar(QLine, QColor, QWidget *parent = nullptr) noexcept;
+    explicit TimingBar(QLine, QColor, QWidget *parent = nullptr) noexcept;
     ~TimingBar() noexcept = default;
 
 private:

src/TimingView.hpp

@@ -22,7 +22,7 @@ public:
     static inline constexpr QColor startColour = QColor(127, 0, 127);
     static inline constexpr QColor endColour   = QColor(0, 127, 0);
 
-    TimingView(QImage img, QWidget *parent = nullptr) noexcept;
+    explicit TimingView(QImage img, QWidget *parent = nullptr) noexcept;
     ~TimingView() noexcept = default;
 
 private: