package adsr sliders into an envelopeGenerator widget

src/ui/widgets/SmartSlider/SmartSlider.h

@@ -0,0 +1,45 @@
+
+#pragma once
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class SmartSlider; }
+QT_END_NAMESPACE
+
+// SmartSlider is the widget including a slider, min/max settings, and a value setting parameter
+class SmartSlider : public QWidget {
+    Q_OBJECT
+
+public:
+    explicit SmartSlider(QWidget* parent = nullptr);
+    ~SmartSlider();
+
+    // setters
+    void setRange(float min, float max);
+    void setValue(float value);
+
+    // getters
+    float value();
+
+signals:
+    void valueChanged(float value);
+
+private slots:
+    void onSliderChanged(int v);
+    void onSpinValueChanged(float v);
+    void onRangeChanged();
+
+private:
+
+    Ui::SmartSlider* ui_;
+
+    // slider just does ints from 0 to this value
+    // all the floating point business happens in here
+    int sliderResolution_ = 10000;
+
+    float min_;
+    float max_;
+    // I got rid of step because it just didn't work right and I really didn't need it
+
+};