fix previewwidget bgcolor

src/module/cursorthemewidget.cpp

@@ -17,6 +17,11 @@ void CursorThemeWidget::initPreviewWidget()
 {
     m_previewwidget = new QWidget(this);
     m_previewwidget->setMinimumSize(495,620);
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
     m_preview = new CursorImageWidget(m_previewwidget,m_iconpathmap);
     m_preview2 = new CursorImageWidget(m_previewwidget,m_timeiconpathmap);
     m_previewlayout = new QVBoxLayout(m_previewwidget);

src/module/globalthemewidget.cpp

@@ -33,7 +33,11 @@ void GlobalThemeWidget::initPreviewWidget()
     m_previewwidget = new QWidget(this);
     m_previewwidget->setMinimumSize(495,620);
 
-    m_previewwidget->setBackgroundRole(QPalette::Window);
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
 
     m_preview = new GlobalImageWidget(m_previewwidget,m_wallpaperpath);
 

src/module/grubthemewidget.cpp

@@ -17,6 +17,12 @@ void GrubThemeWidget::initPreviewWidget()
 
     m_previewwidget->setBackgroundRole(QPalette::Window);
 
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
+
     m_preview = new GrubImageWidget(m_previewwidget);
 
     m_previewlayout = new QVBoxLayout(m_previewwidget);

src/module/iconthemewidget.cpp

@@ -19,6 +19,12 @@ void IconThemeWidget::initPreviewWidget()
     m_previewwidget = new QWidget(this);
     m_previewwidget->setMinimumSize(550,620);
 
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
+
     m_previewstack = new QStackedWidget(m_previewwidget);
 
     m_preview = new ImageWidget(m_previewwidget,m_iconpathmap);

src/module/plymouththemewidget.cpp

@@ -18,6 +18,12 @@ void PlymouthThemeWidget::initPreviewWidget()
 
     m_previewwidget->setBackgroundRole(QPalette::Window);
 
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
+
     m_preview = new PlymouthImageWidget(m_previewwidget);
 
     m_previewlayout = new QVBoxLayout(m_previewwidget);