Removed code for Qt < 4.0.0

We rely in Qt 5.4+
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

src/ui/linechart/ScrollZoomer.cc

@@ -99,9 +99,7 @@ ScrollBar *ScrollZoomer::scrollBar(Qt::Orientation o)
     if ( sb == NULL ) {
         sb = new ScrollBar(o, canvas());
         sb->hide();
-        connect(sb,
-                SIGNAL(valueChanged(Qt::Orientation, double, double)),
-                SLOT(scrollBarMoved(Qt::Orientation, double, double)));
+        connect(sb, &ScrollBar::valueChanged, this, &ScrollZoomer::scrollBarMoved);
     }
     return sb;
 }
@@ -116,11 +114,7 @@ ScrollBar *ScrollZoomer::verticalScrollBar() const
     return d_vScrollData->scrollBar;
 }
 
-#if QT_VERSION < 0x040000
-void ScrollZoomer::setHScrollBarMode(QScrollView::ScrollBarMode mode)
-#else
 void ScrollZoomer::setHScrollBarMode(Qt::ScrollBarPolicy mode)
-#endif
 {
     if ( hScrollBarMode() != mode ) {
         d_hScrollData->mode = mode;
@@ -128,11 +122,7 @@ void ScrollZoomer::setHScrollBarMode(Qt::ScrollBarPolicy mode)
     }
 }
 
-#if QT_VERSION < 0x040000
-void ScrollZoomer::setVScrollBarMode(QScrollView::ScrollBarMode mode)
-#else
 void ScrollZoomer::setVScrollBarMode(Qt::ScrollBarPolicy mode)
-#endif
 {
     if ( vScrollBarMode() != mode ) {
         d_vScrollData->mode = mode;
@@ -140,20 +130,12 @@ void ScrollZoomer::setVScrollBarMode(Qt::ScrollBarPolicy mode)
     }
 }
 
-#if QT_VERSION < 0x040000
-QScrollView::ScrollBarMode ScrollZoomer::hScrollBarMode() const
-#else
 Qt::ScrollBarPolicy ScrollZoomer::hScrollBarMode() const
-#endif
 {
     return d_hScrollData->mode;
 }
 
-#if QT_VERSION < 0x040000
-QScrollView::ScrollBarMode ScrollZoomer::vScrollBarMode() const
-#else
 Qt::ScrollBarPolicy ScrollZoomer::vScrollBarMode() const
-#endif
 {
     return d_vScrollData->mode;
 }
@@ -191,11 +173,7 @@ void ScrollZoomer::setCornerWidget(QWidget *w)
             delete d_cornerWidget;
             d_cornerWidget = w;
             if ( d_cornerWidget->parent() != canvas() ) {
-#if QT_VERSION < 0x040000
-                d_cornerWidget->reparent(canvas(), QPoint(0, 0));
-#else
                 d_cornerWidget->setParent(canvas());
-#endif
             }
 
             updateScrollBars();
@@ -242,11 +220,7 @@ bool ScrollZoomer::eventFilter(QObject *o, QEvent *e)
 
 bool ScrollZoomer::needScrollBar(Qt::Orientation o) const
 {
-#if QT_VERSION < 0x040000
-    QScrollView::ScrollBarMode mode;
-#else
     Qt::ScrollBarPolicy mode;
-#endif
     double zoomMin, zoomMax, baseMin, baseMax;
 
     if ( o == Qt::Horizontal ) {
@@ -265,18 +239,10 @@ bool ScrollZoomer::needScrollBar(Qt::Orientation o) const
 
     bool needed = false;
     switch(mode) {
-#if QT_VERSION < 0x040000
-    case QScrollView::AlwaysOn:
-#else
     case Qt::ScrollBarAlwaysOn:
-#endif
         needed = true;
         break;
-#if QT_VERSION < 0x040000
-    case QScrollView::AlwaysOff:
-#else
     case Qt::ScrollBarAlwaysOff:
-#endif
         needed = false;
         break;
     default: {
@@ -360,9 +326,6 @@ void ScrollZoomer::updateScrollBars()
     if ( showHScrollBar && showVScrollBar ) {
         if ( d_cornerWidget == NULL ) {
             d_cornerWidget = new QWidget(canvas());
-#if QT_VERSION >= 0x040100
-            d_cornerWidget->setAutoFillBackground(true);
-#endif
             d_cornerWidget->setPalette(plot()->palette());
         }
         d_cornerWidget->show();

src/ui/linechart/Scrollbar.cc

@@ -32,8 +32,8 @@ void ScrollBar::init()
     d_maxBase = 1.0;
     moveSlider(d_minBase, d_maxBase);
 
-    connect(this, SIGNAL(sliderMoved(int)), SLOT(catchSliderMoved(int)));
-    connect(this, SIGNAL(valueChanged(int)), SLOT(catchValueChanged(int)));
+    connect(this, &ScrollBar::sliderMoved, this, &ScrollBar::catchSliderMoved);
+    connect(this, &ScrollBar::valueChanged, this, &ScrollBar::catchValueChanged);
 }
 
 void ScrollBar::setInverted(bool inverted)
@@ -75,23 +75,14 @@ void ScrollBar::moveSlider(double min, double max)
     if ( steps <= 0 )
         steps = 1;
 
-#if QT_VERSION < 0x040000
-    setSteps(steps, sliderTicks);
-#else
     setSingleStep(steps);
     setPageStep(sliderTicks);
-#endif
 
     int tick = mapToTick(min + (max - min) / 2);
     if ( isInverted() )
         tick = d_baseTicks - tick;
 
-#if QT_VERSION < 0x040000
-    directSetValue(tick);
-    rangeChange();
-#else
     setSliderPosition(tick);
-#endif
     blockSignals(false);
 }
 
@@ -158,9 +149,6 @@ void ScrollBar::catchSliderMoved(int value)
 
 int ScrollBar::extent() const
 {
-#if QT_VERSION < 0x040000
-    return style().pixelMetric(QStyle::PM_ScrollBarExtent, this);
-#else
     QStyleOptionSlider opt;
     opt.init(this);
     opt.subControls = QStyle::SC_None;
@@ -176,5 +164,4 @@ int ScrollBar::extent() const
     if (orientation() == Qt::Horizontal)
         opt.state |= QStyle::State_Horizontal;
     return style()->pixelMetric(QStyle::PM_ScrollBarExtent, &opt, this);
-#endif
 }