feat(parameterUI): slide functionality

src/Gui/Parameters/AbstractSliderParm.cpp

@@ -0,0 +1,37 @@
+#include "Gui/Parameters/AbstractSliderParm.h"
+#include <QPainter>
+#include <QPaintEvent>
+#include <iostream>
+
+
+enzo::ui::AbstractSliderParm::AbstractSliderParm(QWidget *parent, Qt::WindowFlags f)
+: QWidget(parent, f)
+{
+    setFixedHeight(20);
+    value_ = defaultValue_;
+
+}
+
+void enzo::ui::AbstractSliderParm::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing, true);
+    painter.setPen(Qt::black);
+    painter.setBrush(Qt::red);
+
+    QRectF fillRect = event->rect();
+    float fillPercent = value_/maxValue_;
+    std::cout << "fill percent" << fillPercent << "\n";
+    fillRect.adjust(0, 0, -fillRect.width()*(1-fillPercent), 0);
+    painter.drawRoundedRect(fillRect, 8, 8);
+
+}
+
+
+void enzo::ui::AbstractSliderParm::mouseMoveEvent(QMouseEvent *event)
+{
+    value_ = static_cast<float>(event->pos().x())/rect().width() * maxValue_;
+    update();
+    // std::cout << "pos x: " << fillPercent << "\n";
+}
+

src/Gui/Parameters/AbstractSliderParm.h

@@ -0,0 +1,26 @@
+#pragma once
+#include <QWidget>
+
+namespace enzo::ui
+{
+
+class AbstractSliderParm
+: public QWidget
+{
+public:
+    AbstractSliderParm(QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
+
+private:
+    float value_;
+    float defaultValue_=0;
+    float minValue_;
+    float maxValue_=10;
+
+protected:
+void paintEvent(QPaintEvent *event) override;
+void mouseMoveEvent(QMouseEvent *event) override;
+
+};
+
+}
+