diff --git a/Calendar/BoxDesign.py b/Calendar/BoxDesign.py
new file mode 100644
index 0000000..7017327
--- /dev/null
+++ b/Calendar/BoxDesign.py
@@ -0,0 +1,32 @@
+from DesignEntity import DesignEntity
+from PIL import ImageDraw, ImageOps
+
+class BoxDesign (DesignEntity):
+    """Redefinition of ImageDraw.Draw.Rectangle"""
+    def __init__(self, size, fill=None, outline=None, width=0):
+        super(BoxDesign, self).__init__((size[0]+1, size[1]+1))
+        self.size = size
+        self.__define_corners__()
+        self.fill = fill
+        self.outline = outline
+        self.width = width
+        self.is_bitmap = True
+
+    def __define_corners__(self):
+        topleft = (0,0)
+        topright = (self.size[0], 0)
+        bottomleft = (0, self.size[1])
+        bottomright = self.size
+        self.corners = [topleft, topright, bottomright, bottomleft]
+
+    def __finish_image__ (self):
+        for i in range(self.width):
+            ImageDraw.Draw(self.__image__).polygon(self.__get_reduced_corners__(i), fill=self.fill, outline=self.outline)
+        self.__image__ = ImageOps.invert(self.__image__)
+
+    def __get_reduced_corners__(self, reducer):
+        topleft = (reducer, reducer)
+        topright = (self.size[0] - reducer, reducer)
+        bottomleft = (reducer, self.size[1] - reducer)
+        bottomright = (self.size[0] - reducer, self.size[1] - reducer)
+        return [topleft, topright, bottomright, bottomleft]
\ No newline at end of file
diff --git a/Calendar/EllipseDesign.py b/Calendar/EllipseDesign.py
new file mode 100644
index 0000000..38b90d2
--- /dev/null
+++ b/Calendar/EllipseDesign.py
@@ -0,0 +1,13 @@
+from BoxDesign import BoxDesign
+from PIL import ImageDraw, ImageOps
+
+class EllipseDesign (BoxDesign):
+    """Redefinition of ImageDraw.Draw.Rectangle"""
+    def __init__(self, size, fill=None, outline=None, width=0):
+        super(EllipseDesign, self).__init__(size, fill=fill, outline=outline, width=width)
+
+    def __finish_image__ (self):
+        for i in range(self.width):
+            corners = self.__get_reduced_corners__(i)
+            ImageDraw.Draw(self.__image__).ellipse([corners[0], corners [2]], fill=self.fill, outline=self.outline)
+        self.__image__ = ImageOps.invert(self.__image__)
\ No newline at end of file