Replaced using namespace with using class directives

[pulseview.git] / pv / view / ruler.cpp

diff --git a/pv/view/ruler.cpp b/pv/view/ruler.cpp
index a9a8452d47fc6784d6d736762ba4938ce3408895..aec3de979cf5171062df6777e78a42aaf4c74b03 100644 (file)
--- a/pv/view/ruler.cpp
+++ b/pv/view/ruler.cpp
@@ -37,12 +37,13 @@
 
 #include <pv/widgets/popup.h>
 
-using namespace boost;
-using namespace std;
+using namespace Qt;
+using boost::shared_ptr;
 
 namespace pv {
 namespace view {
 
+const int Ruler::RulerHeight = 30;
 const int Ruler::MinorTickSubdivision = 4;
 const int Ruler::ScaleUnits[3] = {1, 2, 5};
 
@@ -74,7 +75,7 @@ QString Ruler::format_time(double t, unsigned int prefix,
        unsigned int precision)
 {
        const double multiplier = pow(10.0,
-               - prefix * 3 - FirstSIPrefixPower);
+               (int)- prefix * 3 - FirstSIPrefixPower);
 
        QString s;
        QTextStream ts(&s);
@@ -84,9 +85,13 @@ QString Ruler::format_time(double t, unsigned int prefix,
        return s;
 }
 
+QSize Ruler::sizeHint() const
+{
+       return QSize(0, RulerHeight);
+}
+
 void Ruler::paintEvent(QPaintEvent*)
 {
-       using namespace Qt;
 
        const double SpacingIncrement = 32.0f;
        const double MinValueSpacing = 32.0f;
@@ -106,7 +111,7 @@ void Ruler::paintEvent(QPaintEvent*)
                const double min_period = _view.scale() * min_width;
 
                const int order = (int)floorf(log10f(min_period));
-               const double order_decimal = pow(10, order);
+               const double order_decimal = pow(10.0, order);
 
                unsigned int unit = 0;