Rework macro segment list widget

- Allows drag and drop reorder
- Handles selection change
- Handles highlight
- Handles changing collapse change
- Handles add, insert, remove, and clear functionality

src/headers/advanced-scene-switcher.hpp

@@ -147,11 +147,13 @@ public slots:
 	void MinimizeActions();
 	void MinimizeConditions();
 	void MacroActionSelectionChanged(int idx);
+	void MacroActionReorder(int to, int target);
 	void AddMacroAction(int idx);
 	void RemoveMacroAction(int idx);
 	void MoveMacroActionUp(int idx);
 	void MoveMacroActionDown(int idx);
 	void MacroConditionSelectionChanged(int idx);
+	void MacroConditionReorder(int to, int target);
 	void AddMacroCondition(int idx);
 	void RemoveMacroCondition(int idx);
 	void MoveMacroConditionUp(int idx);

src/headers/macro-segment-list.hpp

@@ -1,4 +1,6 @@
 #pragma once
+#include "macro-segment.hpp"
+
 #include <QWidget>
 #include <QScrollArea>
 #include <QVBoxLayout>
@@ -11,15 +13,35 @@ public:
 	MacroSegmentList(QWidget *parent = nullptr);
 	void SetHelpMsg(const QString &msg);
 	void SetHelpMsgVisible(bool visible);
+	void Insert(int idx, QWidget *widget);
+	void Add(QWidget *widget);
+	void Remove(int idx);
+	void Clear(int idx = 0); // Clear all elements >= idx
+	void Highlight(int idx);
+	void SetCollapsed(bool);
+	void SetSelection(int idx);
 	QVBoxLayout *ContentLayout() { return _contentLayout; }
 
 signals:
 	void SelectionChagned(int idx);
+	void Reorder(int source, int target);
 
 protected:
+	bool eventFilter(QObject *object, QEvent *event);
 	void mousePressEvent(QMouseEvent *event);
+	void mouseMoveEvent(QMouseEvent *event);
+	void mouseReleaseEvent(QMouseEvent *event);
+	void dragEnterEvent(QDragEnterEvent *event);
+	void dropEvent(QDropEvent *event);
 
 private:
+	int GetIndex(QPoint);
+	int GetDropIndex(QPoint);
+	QRect GetContentItemRectWithPadding(int idx);
+
+	int _dragPosition = -1;
+
+	QVBoxLayout *_layout;
 	QVBoxLayout *_contentLayout;
 	QLabel *_helpMsg;
 };