fix(screensaver plugin): Lock screen wallpaper switching, screensaver will not switch automatically

Description: Lock screen wallpaper switching, screensaver will not switch automatically

Log: 锁屏壁纸切换，屏保不会自动切换
Bug: bug#I8J6U1ukui屏保自动切换

src/screensaver/scconfiguration.cpp

@@ -66,6 +66,9 @@ void SCConfiguration::onConfigurationChanged(QString key, QVariant value)
     }else if(key == "backgroundPath"){
         QString path = value.toString();
         Q_EMIT backgroundPathChanged(path);
+    }else if(key == "background"){
+        QString path = value.toString();
+        Q_EMIT backgroundChanged(path);
     }else if(key == "mytext"){
         QString text = value.toString();
         Q_EMIT myTextChanged(text);

src/screensaver/scconfiguration.h

@@ -68,6 +68,7 @@ Q_SIGNALS:
     void        cycleTimeChanged(int cycleTime);
     bool        autoSwitchChanged(bool changed);
     QString     backgroundPathChanged(QString path);
+    QString     backgroundChanged(QString path);
     QString     myTextChanged(QString text);
     bool        showCRestTimeChanged(bool isShow);
     bool        showURestTimeChanged(bool isShow);

src/screensaver/screensaver.cpp

@@ -151,7 +151,7 @@ void Screensaver::getConfiguration()
         textIsCenter    =  configuration->getTextIsCenter();
         myText          =  configuration->getMyText();
     }else
-    isUShowRestTime  =  configuration->getUShowRestTime();
+        isUShowRestTime  =  configuration->getUShowRestTime();
     curFontSize = configuration->getFontSize();
     m_ptToPx = configuration->getPtToPx();
 
@@ -168,6 +168,8 @@ void Screensaver::connectSingles()
             this, &Screensaver::autoSwitchChanged);
     connect(configuration, &SCConfiguration::backgroundPathChanged,
             this, &Screensaver::backgroundPathChanged);
+    connect(configuration, &SCConfiguration::backgroundChanged,
+            this, &Screensaver::backgroundChanged);
     connect(configuration, &SCConfiguration::cycleTimeChanged,
             this, &Screensaver::cycleTimeChanged);
     connect(configuration, &SCConfiguration::myTextChanged,
@@ -254,6 +256,11 @@ void Screensaver::backgroundPathChanged(QString path)
     startSwitchImages();
 }
 
+void Screensaver::backgroundChanged(QString path)
+{
+    background = loadFromFile(path);
+}
+
 void Screensaver::cycleTimeChanged(int cTime)
 {
     cycleTime = cTime;

src/screensaver/screensaver.h

@@ -194,6 +194,7 @@ private Q_SLOTS:
     void updateTime();
     void autoSwitchChanged(bool iswitch);
     void backgroundPathChanged(QString path);
+    void backgroundChanged(QString path);
     void cycleTimeChanged(int cTime);
     void myTextChanged(QString text);
     void showCRestTimeChanged(bool isShow);