[UI][ADD] Model attribute slider

- Combined label, slider and value label
- Provide redesigned signals

FinalProject/modelattrslide.cpp

@@ -0,0 +1,79 @@
+#include "modelattrslide.h"
+
+ModelAttributeSlide::ModelAttributeSlide(const QString& label, float min, float max, int step, QWidget* parent) :
+    QWidget(parent)
+{
+    // Create main stretch layout
+    _stretchLayout = new QHBoxLayout(this);
+    _stretchLayout->setContentsMargins(0, 0, 0, 0);
+    _stretchLayout->setSpacing(0);
+    setLayout(_stretchLayout);
+    
+    // Create Slider
+    _slider = new Slider(min, max, step, this);
+    _stretchLayout->addWidget(_slider);
+    _slider->show();
+    
+    // Create Label
+    _label = new QLabel(label, this);
+    _label->setMinimumWidth(56);
+    _label->setFont(QFont("Corbel", 11));
+    _label->show();
+    _slider->mainLayout()->insertWidget(0, _label);
+    _slider->mainLayout()->insertSpacing(1, 8);
+    
+    // Create Value label
+    _val = new QLabel(this);
+    _val->setMinimumWidth(32);
+    _val->setFont(QFont("Corbel", 11));
+    _val->setText(QString::number(_slider->val(), 'f', 1));
+    _val->show();
+    _slider->mainLayout()->addSpacing(8);
+    _slider->mainLayout()->addWidget(_val);
+    
+    // Connect
+    connect(_slider, &Slider::onChanged, this, &ModelAttributeSlide::onChanged);
+    connect(_slider, &Slider::onSetValue, this, [=]() {
+        _val->setText(QString::number(_slider->val(), 'f', 1));
+    });
+    connect(_slider, &Slider::onDragStart, this, &ModelAttributeSlide::onChangeStart);
+    connect(_slider, &Slider::onDragEnd, this, &ModelAttributeSlide::onChangeEnd);
+}
+
+ModelAttributeSlide::~ModelAttributeSlide()
+{}
+
+void ModelAttributeSlide::setLabel(const QString& label)
+{
+    _label->setText(label);
+}
+
+void ModelAttributeSlide::setMin(float min)
+{
+    _slider->setMin(min);
+}
+
+void ModelAttributeSlide::setMax(float max)
+{
+    _slider->setMax(max);
+}
+
+void ModelAttributeSlide::setStep(float step)
+{
+    _slider->setStep(step);
+}
+
+void ModelAttributeSlide::setValue(float val)
+{
+    _slider->setValue(val);
+}
+
+void ModelAttributeSlide::setTransformation(std::function<float(float)> transform, std::function<float(float)> inverse)
+{
+    _slider->setTransformation(transform, inverse);
+}
+
+void ModelAttributeSlide::setEnabled(bool enable)
+{
+    _slider->setEnabled(enable);
+}

FinalProject/modelattrslide.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <qwidget.h>
+#include <qboxlayout.h>
+#include <qlabel.h>
+
+#include "slider.h"
+
+class ModelAttributeSlide : public QWidget
+{
+    Q_OBJECT
+
+public:
+    ModelAttributeSlide(const QString& label, float min, float max, int step, QWidget* parent = 0);
+    ~ModelAttributeSlide();
+
+private:
+    QHBoxLayout* _stretchLayout;
+    QLabel* _label;
+    QLabel* _val;
+    Slider* _slider;
+
+public:
+    // Getter APIs
+    float val() const { return _slider->val(); }
+    float lev() const { return _slider->lev(); }
+    
+    // Setter APIs
+    void setLabel(const QString& label);
+    void setMin(float min);
+    void setMax(float max);
+    void setStep(float max);
+    void setValue(float val);   // Set the actual value
+    void setTransformation(std::function<float(float)> transform, std::function<float(float)> inverse);
+
+    void setEnabled(bool enable = true);
+    
+signals:
+    void onChanged(float val);
+    void onChangeStart();
+    void onChangeEnd();
+};