Imported Upstream version 0.13.2+dsfg1

obs/double-slider.cpp

@@ -0,0 +1,35 @@
+#include "double-slider.hpp"
+
+#include <cmath>
+
+DoubleSlider::DoubleSlider(QWidget *parent) : QSlider(parent)
+{
+	connect(this, SIGNAL(valueChanged(int)),
+			this, SLOT(intValChanged(int)));
+}
+
+void DoubleSlider::setDoubleConstraints(double newMin, double newMax,
+		double newStep, double val)
+{
+	minVal = newMin;
+	maxVal = newMax;
+	minStep = newStep;
+
+	double total = maxVal - minVal;
+	int intMax = int(total / minStep);
+
+	setMinimum(0);
+	setMaximum(intMax);
+	setSingleStep(1);
+	setDoubleVal(val);
+}
+
+void DoubleSlider::intValChanged(int val)
+{
+	emit doubleValChanged((minVal/minStep + val) * minStep);
+}
+
+void DoubleSlider::setDoubleVal(double val)
+{
+	setValue(lround((val - minVal) / minStep));
+}