Add more explicit

src/declarativeimports/core/colorscope.h

@@ -87,7 +87,7 @@ class ColorScope : public QQuickItem
 
 public:
 /// @cond INTERNAL_DOCS
-    explicit ColorScope(QQuickItem *parent = nullptr, QObject *parentObject = 0);
+    explicit ColorScope(QQuickItem *parent = nullptr, QObject *parentObject = nullptr);
     ~ColorScope();
 
     void setColorGroup(Plasma::Theme::ColorGroup group);

src/declarativeimports/core/datamodel.h

@@ -90,7 +90,7 @@ class SortFilterModel : public QSortFilterProxyModel
     friend class DataModel;
 
 public:
-    SortFilterModel(QObject *parent = nullptr);
+    explicit SortFilterModel(QObject *parent = nullptr);
     ~SortFilterModel();
 
     void setModel(QAbstractItemModel *source);

src/declarativeimports/core/datasource.h

@@ -56,7 +56,7 @@ public:
 
     typedef QMap<QString, QVariant> Data;
 
-    DataSource(QObject *parent = nullptr);
+    explicit DataSource(QObject *parent = nullptr);
 
     void classBegin() Q_DECL_OVERRIDE;
     void componentComplete() Q_DECL_OVERRIDE;

src/declarativeimports/core/svgitem.h

@@ -68,7 +68,7 @@ class SvgItem : public QQuickItem
 public:
 /// @cond INTERNAL_DOCS
 
-    SvgItem(QQuickItem *parent = nullptr);
+    explicit SvgItem(QQuickItem *parent = nullptr);
     ~SvgItem();
 
     void setElementId(const QString &elementID);

src/declarativeimports/plasmaextracomponents/fallbackcomponent.h

@@ -48,7 +48,7 @@ class FallbackComponent : public QObject
     Q_PROPERTY(QStringList candidates READ candidates WRITE setCandidates NOTIFY candidatesChanged)
 
 public:
-    FallbackComponent(QObject *parent = nullptr);
+    explicit FallbackComponent(QObject *parent = nullptr);
 
     /**
     * This method must be called after the the basePath and the candidates property

src/plasma/private/effectwatcher_p.h

@@ -34,7 +34,7 @@ class EffectWatcher: public QObject, public QAbstractNativeEventFilter
     Q_OBJECT
 
 public:
-    EffectWatcher(const QString &property, QObject *parent = nullptr);
+    explicit EffectWatcher(const QString &property, QObject *parent = nullptr);
 
 protected:
     bool isEffectActive() const;

src/plasma/private/storagethread_p.h

@@ -33,7 +33,7 @@ class StorageThread : public QThread
 {
     Q_OBJECT
 public:
-    StorageThread(QObject *parent = nullptr);
+    explicit StorageThread(QObject *parent = nullptr);
     ~StorageThread();
 
     void run() Q_DECL_OVERRIDE;

src/plasma/private/svg_p.h

@@ -37,7 +37,7 @@ class SharedSvgRenderer : public QSvgRenderer, public QSharedData
 public:
     typedef QExplicitlySharedDataPointer<SharedSvgRenderer> Ptr;
 
-    SharedSvgRenderer(QObject *parent = nullptr);
+    explicit SharedSvgRenderer(QObject *parent = nullptr);
     SharedSvgRenderer(
         const QString &filename,
         const QString &styleSheet,

src/plasma/private/theme_p.h

@@ -63,7 +63,7 @@ class ThemePrivate : public QObject
     Q_OBJECT
 
 public:
-    ThemePrivate(QObject *parent = nullptr);
+    explicit ThemePrivate(QObject *parent = nullptr);
     ~ThemePrivate();
 
     KConfigGroup &config();

src/plasma/private/timetracker.h

@@ -60,7 +60,7 @@ class PLASMA_EXPORT TimeTracker : QObject
 {
 Q_OBJECT
 public:
-    TimeTracker(QObject* applet);
+    explicit TimeTracker(QObject* applet);
     virtual ~TimeTracker();
 
 private Q_SLOTS:

src/scriptengines/qml/plasmoid/wallpaperinterface.h

@@ -51,7 +51,7 @@ class WallpaperInterface : public QQuickItem
     Q_PROPERTY(KDeclarative::ConfigPropertyMap *configuration READ configuration NOTIFY configurationChanged)
 
 public:
-    WallpaperInterface(ContainmentInterface *parent = nullptr);
+    explicit WallpaperInterface(ContainmentInterface *parent = nullptr);
     ~WallpaperInterface();
 
     /**