ProjectExplorer: Fix theming of KitAreaWidget

Let the parent widget (MiniProjectTargetSelector) paint the background.
Remove all unneeded QStyle and QPalette setters.

(Note: select a kit with mutable device to see the fix)

Change-Id: I9166659580c3cb3047155ccea65c749d5d542f07
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/kitinformation.cpp

@@ -95,11 +95,6 @@ private:
             m_chooser->setFileName(SysRootKitAspect::sysRoot(m_kit));
     }
 
-    void setPalette(const QPalette &p) override
-    {
-        KitAspectWidget::setPalette(p);
-    }
-
     void pathWasChanged()
     {
         m_ignoreChange = true;

src/plugins/projectexplorer/kitmanager.cpp

@@ -727,22 +727,6 @@ QString KitAspectWidget::msgManage()
     return tr("Manage...");
 }
 
-void KitAspectWidget::setPalette(const QPalette &p)
-{
-    if (mainWidget())
-        mainWidget()->setPalette(p);
-    if (buttonWidget())
-        buttonWidget()->setPalette(p);
-}
-
-void KitAspectWidget::setStyle(QStyle *s)
-{
-    if (mainWidget())
-        mainWidget()->setStyle(s);
-    if (buttonWidget())
-        buttonWidget()->setStyle(s);
-}
-
 // --------------------------------------------------------------------
 // KitFeatureProvider:
 // --------------------------------------------------------------------

src/plugins/projectexplorer/kitmanager.h

@@ -38,10 +38,6 @@
 
 #include <functional>
 
-QT_BEGIN_NAMESPACE
-class QStyle;
-QT_END_NAMESPACE
-
 namespace Utils {
 class Environment;
 class FilePath;
@@ -147,9 +143,6 @@ public:
 
     Kit *kit() const { return m_kit; }
 
-    virtual void setPalette(const QPalette &p);
-    virtual void setStyle(QStyle *s);
-
 signals:
     void dirty();
 

src/plugins/projectexplorer/miniprojecttargetselector.cpp

@@ -613,7 +613,6 @@ KitAreaWidget::KitAreaWidget(QWidget *parent) : QWidget(parent),
     m_layout(new QGridLayout(this))
 {
     m_layout->setContentsMargins(3, 3, 3, 3);
-    setAutoFillBackground(true);
     connect(KitManager::instance(), &KitManager::kitUpdated, this, &KitAreaWidget::updateKit);
 }
 
@@ -643,9 +642,6 @@ void KitAreaWidget::setKit(Kit *k)
             QLabel *label = new QLabel(aspect->displayName());
             m_labels << label;
 
-            widget->setStyle(QStyleFactory::create(QLatin1String("fusion")));
-            widget->setPalette(palette());
-
             m_layout->addWidget(label, row, 0);
             m_layout->addWidget(widget->mainWidget(), row, 1);
             m_layout->addWidget(widget->buttonWidget(), row, 2);