package adsr sliders into an envelopeGenerator widget

src/ui/widgets/EnvelopeGenerator/EnvelopeGenerator.cpp

@@ -0,0 +1,73 @@
+
+#include "EnvelopeGenerator.h"
+#include "ui_EnvelopeGenerator.h"
+
+#include <iostream>
+
+EnvelopeGenerator::EnvelopeGenerator(QWidget* parent) : QWidget(parent), ui_(new Ui::EnvelopeGenerator) {
+
+    ui_->setupUi(this);
+
+    auto connectSlider = [this](SmartSlider* s) {
+        connect(s, &SmartSlider::valueChanged,
+                this, &EnvelopeGenerator::emitEnvelope);
+    };
+
+    connectSlider(ui_->sliderAttack);
+    connectSlider(ui_->sliderDecay);
+    connectSlider(ui_->sliderSustain);
+    connectSlider(ui_->sliderRelease);
+}
+
+EnvelopeGenerator::~EnvelopeGenerator() {
+    delete ui_;
+}
+
+// getters are here to separate ui from header
+float EnvelopeGenerator::attack() const {
+    return ui_->sliderAttack->value();
+}
+
+float EnvelopeGenerator::decay() const {
+    return ui_->sliderDecay->value();
+}
+
+float EnvelopeGenerator::sustain() const {
+    return ui_->sliderSustain->value();
+}
+
+float EnvelopeGenerator::release() const {
+    return ui_->sliderRelease->value();
+}
+
+void EnvelopeGenerator::setAttack(float v) {
+    ui_->sliderAttack->setValue(v);
+}
+
+void EnvelopeGenerator::setDecay(float v) {
+    ui_->sliderDecay->setValue(v);
+}
+
+void EnvelopeGenerator::setSustain(float v) {
+    ui_->sliderSustain->setValue(v);
+}
+
+void EnvelopeGenerator::setRelease(float v) {
+    ui_->sliderRelease->setValue(v);
+}
+
+void EnvelopeGenerator::setRanges(float minA, float maxA, float minD, float maxD, float minS, float maxS, float minR, float maxR) {
+    ui_->sliderAttack->setRange(minA, maxA);
+    ui_->sliderDecay->setRange(minD, maxD);
+    ui_->sliderSustain->setRange(minS, maxS);
+    ui_->sliderRelease->setRange(minR, maxR);
+}
+
+void EnvelopeGenerator::emitEnvelope() {
+    emit envelopeChanged(
+        attack(),
+        decay(),
+        sustain(),
+        release()
+    );
+}