feat(parameter): persistant parameter value

src/Engine/Parameter/Parameter.cpp

@@ -13,3 +13,12 @@ std::string enzo::prm::Parameter::getName() const
     return template_.getName();
 }
 
+enzo::bt::floatT enzo::prm::Parameter::evalFloat() const
+{
+    return floatValue_;
+}
+void enzo::prm::Parameter::setFloat(bt::floatT value)
+{
+    floatValue_ = value;
+}
+

src/Engine/Parameter/Parameter.h

@@ -9,8 +9,8 @@ class Parameter
 public:
     Parameter(Template prmTemplate);
     std::string getName() const;
-    inline bt::floatT evalFloat() const {return floatValue_;}
-    inline void setFloat(bt::floatT value) {floatValue_ = value;}
+    bt::floatT evalFloat() const;
+    void setFloat(bt::floatT value);
 private:
     Template template_;
     bt::floatT floatValue_ = 0;

src/Gui/Parameters/AbstractFormParm.cpp

@@ -2,32 +2,46 @@
 #include "Gui/Parameters/AbstractSliderParm.h"
 #include <qboxlayout.h>
 #include <QLabel>
+#include <iostream>
 
 
 enzo::ui::AbstractFormParm::AbstractFormParm(std::weak_ptr<prm::Parameter> parameter)
+: parameter_{parameter}
 {
-    std::string name;
-    if(auto sharedParameter=parameter.lock())
+    if(auto sharedParameter=parameter_.lock())
     {
-        name = sharedParameter->getName();
-    }
-    else
-    {
-        return;
-    }
-
+        std::string name = sharedParameter->getName();
         auto label = new QLabel(QString::fromStdString(name+":"));
         label->setStyleSheet("QLabel{background: none}");
         label->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Preferred);
 
+        auto slider = new AbstractSliderParm();
+        connect(slider, &AbstractSliderParm::valueChanged, this, &AbstractFormParm::changeValue); 
+        slider->setValue(sharedParameter->evalFloat());
+
         mainLayout_ = new QHBoxLayout();
         mainLayout_->addWidget(label);
-    mainLayout_->addWidget(new AbstractSliderParm());
+        mainLayout_->addWidget(slider);
         mainLayout_->setContentsMargins(0,0,0,0);
 
         setFixedHeight(24);
         setProperty("class", "Parameter");
         setStyleSheet(".Parameter { background-color: none;}");
         setLayout(mainLayout_);
+    }
+
 }
 
+void enzo::ui::AbstractFormParm::changeValue(enzo::bt::floatT value)
+{
+    if(auto sharedParameter=parameter_.lock())
+    {
+        sharedParameter->setFloat(value);
+    }
+    else
+    {
+        std::cout << "ERROR: parameter no longer exists\n";
+
+    }
+     
+}

src/Gui/Parameters/AbstractFormParm.h

@@ -12,8 +12,13 @@ class AbstractFormParm
 public:
     AbstractFormParm(std::weak_ptr<prm::Parameter> parameter);
 
+protected slots:
+    void changeValue(bt::floatT value);
+
+
 private:
     QHBoxLayout* mainLayout_;
+    std::weak_ptr<prm::Parameter> parameter_;
 
 };
 

src/Gui/Parameters/AbstractSliderParm.cpp

@@ -13,6 +13,8 @@
 enzo::ui::AbstractSliderParm::AbstractSliderParm(QWidget *parent, Qt::WindowFlags f)
 : QWidget(parent, f)
 {
+    // tells qt to style the widget even though it's a Q_OBJECT
+    setAttribute(Qt::WA_StyledBackground, true);
     setFixedHeight(24);
     value_ = defaultValue_;
     
@@ -53,8 +55,8 @@ void enzo::ui::AbstractSliderParm::paintEvent(QPaintEvent *event)
 
 void enzo::ui::AbstractSliderParm::setValue(bt::floatT value)
 {
-    if(value_==value)
-        return;
+    // if(value_==value)
+    //     return;
 
     if(clampMin_ && value<minValue_) { value = minValue_; }
     if(clampMax_ && value>maxValue_) { value = maxValue_; }
@@ -65,6 +67,8 @@ void enzo::ui::AbstractSliderParm::setValue(bt::floatT value)
     valStr.truncate(4);
     valueLabel_->setText(valStr);
 
+    valueChanged(value_);
+
 }
 
 

src/Gui/Parameters/AbstractSliderParm.h

@@ -10,11 +10,15 @@ namespace enzo::ui
 class AbstractSliderParm
 : public QWidget
 {
+    Q_OBJECT
 public:
     AbstractSliderParm(QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
+    void setValue(bt::floatT value);
+
+signals:
+    void valueChanged(bt::floatT value); 
 
 private:
-    void setValue(bt::floatT value);
 
     QVBoxLayout* mainLayout_;
     QLabel* valueLabel_;