Merge pull request #2307 from ronso0/widget-focus-prevention_1

keep the library focused when any deck controls or the overview are clicked

src/widget/weffectparameterknob.cpp

@@ -10,6 +10,7 @@ void WEffectParameterKnob::setupEffectParameterSlot(const ConfigKey& configKey)
         return;
     }
     setEffectParameterSlot(pParameterSlot);
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WEffectParameterKnob::setEffectParameterSlot(

src/widget/weffectparameterknobcomposed.cpp

@@ -15,6 +15,7 @@ void WEffectParameterKnobComposed::setupEffectParameterSlot(const ConfigKey& con
         return;
     }
     setEffectParameterSlot(pParameterSlot);
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WEffectParameterKnobComposed::setEffectParameterSlot(

src/widget/weffectpushbutton.cpp

@@ -17,6 +17,7 @@ void WEffectPushButton::setup(const QDomNode& node, const SkinContext& context)
     m_pButtonMenu = new QMenu(this);
     connect(m_pButtonMenu, SIGNAL(triggered(QAction*)),
             this, SLOT(slotActionChosen(QAction*)));
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WEffectPushButton::setupEffectParameterSlot(const ConfigKey& configKey) {

src/widget/wknob.cpp

@@ -28,6 +28,7 @@ WKnob::WKnob(QWidget* pParent)
                         mixxx::Duration::fromSeconds(1)) {
     connect(&m_renderTimer, SIGNAL(update()),
             this, SLOT(update()));
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WKnob::mouseMoveEvent(QMouseEvent* e) {

src/widget/wknobcomposed.cpp

@@ -56,6 +56,8 @@ void WKnobComposed::setup(const QDomNode& node, const SkinContext& context) {
     m_dKnobCenterXOffset *= scaleFactor;
     m_dKnobCenterYOffset *= scaleFactor;
     m_dArcThickness *= scaleFactor;
+
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WKnobComposed::clear() {

src/widget/woverview.cpp

@@ -197,6 +197,8 @@ void WOverview::setup(const QDomNode& node, const SkinContext& context) {
             }
         }
     }
+
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WOverview::onConnectedControlChanged(double dParameter, double dValue) {

src/widget/wpushbutton.cpp

@@ -222,6 +222,8 @@ void WPushButton::setup(const QDomNode& node, const SkinContext& context) {
             rightConnection->setDirectionOption(ControlParameterWidgetConnection::DIR_FROM_WIDGET);
         }
     }
+
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WPushButton::setStates(int iStates) {

src/widget/wslidercomposed.cpp

@@ -89,6 +89,8 @@ void WSliderComposed::setup(const QDomNode& node, const SkinContext& context) {
             }
         }
     }
+
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WSliderComposed::setSliderPixmap(PixmapSource sourceSlider,

src/widget/wstarrating.cpp

@@ -21,6 +21,7 @@ void WStarRating::setup(const QDomNode& node, const SkinContext& context) {
     Q_UNUSED(node);
     Q_UNUSED(context);
     setMouseTracking(true);
+    setFocusPolicy(Qt::NoFocus);
 }
 
 QSize WStarRating::sizeHint() const {

src/widget/wstatuslight.cpp

@@ -66,6 +66,8 @@ void WStatusLight::setup(const QDomNode& node, const SkinContext& context) {
             m_pixmaps[i].clear();
         }
     }
+
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WStatusLight::setPixmap(int iState, PixmapSource source,

src/widget/wvumeter.cpp

@@ -90,6 +90,8 @@ void WVuMeter::setup(const QDomNode& node, const SkinContext& context) {
     if (m_iPeakFallTime < 1 || m_iPeakFallTime > 1000) {
         m_iPeakFallTime = DEFAULT_FALLTIME;
     }
+
+    setFocusPolicy(Qt::NoFocus);
 }
 
 void WVuMeter::setPixmapBackground(