Load and display prefabs in UI

include/ui/currentselectedmetatilespixmapitem.h

@@ -18,4 +18,6 @@ public:
     void setMap(Map *map) { this->map = map; }
 };
 
+QPixmap drawMetatileSelection(MetatileSelection selection, Map *map);
+
 #endif // CURRENTSELECTEDMETATILESPIXMAPITEM_H

include/ui/prefab.h

@@ -0,0 +1,31 @@
+#ifndef PREFAB_H
+#define PREFAB_H
+
+#include "ui/metatileselector.h"
+#include "map.h"
+
+#include <QString>
+#include <QLabel>
+
+struct PrefabItem
+{
+    QString name;
+    QString primaryTileset;
+    QString secondaryTileset;
+    MetatileSelection selection;
+};
+
+class Prefab
+{
+public:
+    void initPrefabUI(QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map);
+
+private:
+    QList<PrefabItem> items;
+    void loadPrefabs();
+    QList<PrefabItem> getPrefabsForTilesets(QString primaryTileset, QString secondaryTileset);
+};
+
+extern Prefab prefab;
+
+#endif // PREFAB_H

include/ui/prefabframe.h

@@ -0,0 +1,22 @@
+#ifndef PREFABFRAME_H
+#define PREFABFRAME_H
+
+#include <QFrame>
+
+namespace Ui {
+class PrefabFrame;
+}
+
+class PrefabFrame : public QFrame
+{
+    Q_OBJECT
+
+public:
+    explicit PrefabFrame(QWidget *parent = nullptr);
+    ~PrefabFrame();
+
+public:
+    Ui::PrefabFrame *ui;
+};
+
+#endif // PREFABFRAME_H