Add player view rectangle option

include/ui/mappixmapitem.h

@@ -13,8 +13,10 @@ public:
         this->map = map_;
         this->metatileSelector = metatileSelector;
         this->settings = settings;
+        this->paintingEnabled = true;
         setAcceptHoverEvents(true);
     }
+    bool paintingEnabled;
     Map *map;
     MetatileSelector *metatileSelector;
     Settings *settings;

include/ui/playerviewrect.h

@@ -0,0 +1,35 @@
+#ifndef PLAYERVIEWRECT_H
+#define PLAYERVIEWRECT_H
+
+#include <QGraphicsItem>
+#include <QPainter>
+
+class PlayerViewRect : public QGraphicsItem
+{
+public:
+    PlayerViewRect(bool *enabled);
+    QRectF boundingRect() const override
+    {
+        qreal penWidth = 4;
+        return QRectF(-penWidth,
+                      -penWidth,
+                      30 * 8 + penWidth * 2,
+                      20 * 8 + penWidth * 2);
+    }
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
+               QWidget *widget) override
+    {
+        int width = 30 * 8;
+        int height = 20 * 8;
+        painter->setPen(QColor(0xff, 0xff, 0xff));
+        painter->drawRect(-2, -2, width + 3, height + 3);
+        painter->setPen(QColor(0, 0, 0));
+        painter->drawRect(-3, -3, width + 5, height + 5);
+        painter->drawRect(-1, -1, width + 1, height + 1);
+    }
+    void updateLocation(int x, int y);
+    bool *enabled;
+};
+
+#endif // PLAYERVIEWRECT_H