Fix several unused warnings for misc disabled features

Change-Id: Id42daf684abeeb888155d65eca143150d9c5f5a7
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

src/widgets/styles/qcommonstyle.cpp

@@ -416,6 +416,8 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
         proxy()->drawItemPixmap(p, opt->rect, Qt::AlignCenter, pixmap);
         break;
     }
+#else
+    Q_UNUSED(d);
 #endif // QT_NO_TABBAR
     case PE_FrameTabWidget:
     case PE_FrameWindow:
@@ -2315,6 +2317,9 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
     default:
         break;
     }
+#if !QT_CONFIG(tabbar) && !QT_CONFIG(itemviews)
+    Q_UNUSED(d);
+#endif
 }
 
 /*!
@@ -3058,6 +3063,9 @@ QRect QCommonStyle::subElementRect(SubElement sr, const QStyleOption *opt,
         break;
     }
     return r;
+#if !QT_CONFIG(tabwidget) && !QT_CONFIG(itemviews)
+    Q_UNUSED(d);
+#endif
 }
 
 #ifndef QT_NO_DIAL
@@ -4357,6 +4365,9 @@ QRect QCommonStyle::subControlRect(ComplexControl cc, const QStyleOptionComplex
      default:
         qWarning("QCommonStyle::subControlRect: Case %d not handled", cc);
     }
+#if !QT_CONFIG(slider) && !QT_CONFIG(spinbox) && !QT_CONFIG(toolbutton) && !QT_CONFIG(groupbox)
+    Q_UNUSED(widget);
+#endif
     return ret;
 }
 
@@ -5275,6 +5286,7 @@ static inline QString clearText16IconPath()
 }
 #endif // !QT_NO_IMAGEFORMAT_PNG
 
+#if defined(Q_OS_WIN) || QT_CONFIG(imageformat_png)
 static QIcon clearTextIcon(bool rtl)
 {
     const QString directionalThemeName = rtl
@@ -5298,6 +5310,7 @@ static QIcon clearTextIcon(bool rtl)
 #endif // !QT_NO_IMAGEFORMAT_PNG
     return icon;
 }
+#endif
 
 /*! \reimp */
 QPixmap QCommonStyle::standardPixmap(StandardPixmap sp, const QStyleOption *option,
@@ -5642,6 +5655,9 @@ QPixmap QCommonStyle::standardPixmap(StandardPixmap sp, const QStyleOption *opti
     }
 #endif //QT_NO_IMAGEFORMAT_XPM
 
+#if !QT_CONFIG(imageformat_png) && !QT_CONFIG(imageformat_xpm) && !QT_CONFIG(imageformat_png)
+    Q_UNUSED(rtl);
+#endif
 
     return QPixmap();
 }

src/widgets/styles/qfusionstyle.cpp

@@ -1954,9 +1954,13 @@ void QFusionStyle::drawComplexControl(ComplexControl control, const QStyleOption
 
     Q_D (const QFusionStyle);
 
+#if QT_CONFIG(spinbox) || QT_CONFIG(slider)
     QColor buttonColor = d->buttonColor(option->palette);
+#endif
+#if QT_CONFIG(slider)
     QColor gradientStartColor = buttonColor.lighter(118);
     QColor gradientStopColor = buttonColor;
+#endif
     QColor outline = d->outline(option->palette);
 
     QColor alphaCornerColor;

src/widgets/styles/qpixmapstyle.cpp

@@ -204,6 +204,9 @@ void QPixmapStyle::polish(QWidget *widget)
 #if QT_CONFIG(scrollbar)
     if (qobject_cast<QScrollBar*>(widget))
         widget->setAttribute(Qt::WA_OpaquePaintEvent, false);
+#endif
+#if !QT_CONFIG(progressbar) && !QT_CONFIG(combobox)
+    Q_UNUSED(d);
 #endif
     QCommonStyle::polish(widget);
 }
@@ -929,6 +932,10 @@ void QPixmapStyle::drawSlider(const QStyleOptionComplex *option,
             painter->drawPixmap(handle, d->pixmaps.value(pix).pixmap);
         }
     }
+#else
+    Q_UNUSED(option);
+    Q_UNUSED(painter);
+    Q_UNUSED(widget);
 #endif // QT_CONFIG(slider)
 }
 
@@ -968,6 +975,10 @@ void QPixmapStyle::drawScrollBar(const QStyleOptionComplex *option,
                 ? SB_Horizontal : SB_Vertical;
         drawCachedPixmap(control, rect, painter);
     }
+#else
+    Q_UNUSED(option);
+    Q_UNUSED(painter);
+    Q_UNUSED(widget);
 #endif // QT_CONFIG(slider)
 }
 
@@ -1044,6 +1055,9 @@ QSize QPixmapStyle::sliderSizeFromContents(const QStyleOption *option,
     else
         return QSize(desc.size.width(), result.height());
 #else // QT_CONFIG(slider)
+    Q_UNUSED(option);
+    Q_UNUSED(contentsSize);
+    Q_UNUSED(widget);
     return QSize();
 #endif // QT_CONFIG(slider)
 }
@@ -1160,6 +1174,9 @@ QRect QPixmapStyle::scrollBarSubControlRect(const QStyleOptionComplex *option,
             }
         }
     }
+#else
+    Q_UNUSED(option);
+    Q_UNUSED(sc);
 #endif // QT_CONFIG(slider)
     return QRect();
 }

src/widgets/styles/qstylehelper.cpp

@@ -415,6 +415,8 @@ QColor backgroundColor(const QPalette &pal, const QWidget* widget)
     if (qobject_cast<const QScrollBar *>(widget) && widget->parent() &&
             qobject_cast<const QAbstractScrollArea *>(widget->parent()->parent()))
         return widget->parentWidget()->parentWidget()->palette().color(QPalette::Base);
+#else
+    Q_UNUSED(widget);
 #endif
     return pal.color(QPalette::Base);
 }

src/widgets/styles/qwindowsstyle.cpp

@@ -1734,6 +1734,8 @@ void QWindowsStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPai
                     step = (animation->animationStep() / 3) % chunkCount;
                 else
                     d->startAnimation(new QProgressStyleAnimation(d->animationFps, opt->styleObject));
+#else
+                Q_UNUSED(d);
 #endif
                 int chunksInRow = 5;
                 int myY = pbBits.rect.y();