NITDgpOS#81 Added save button in filemenu

.gitignore

@@ -1,5 +1,4 @@
 *.pyc
 .temp/
 venv/
-.png
-test.py
+

gui_main.py

@@ -8,6 +8,7 @@
     from Tkinter import *
 except ImportError:
     from tkinter import *
+    from tkinter import filedialog
 
 try:
     import ttk
@@ -65,6 +66,14 @@ def destroy_app():
     root.destroy()
     exit(0)
 
+def save_file():
+    file=filedialog.asksaveasfile(mode="wb", title="Save Figure", defaultextension=".png", filetypes = (("png files","*.png"),("all files","*.*")))
+    if file is None:
+        return None
+    img_to_save=open(".temp/generated_plot.png","rb").read()
+    file.write(img_to_save)
+    file.close()
+
 
 class Menubar:
     def __init__(self, master):
@@ -73,6 +82,7 @@ def __init__(self, master):
 
         filemenu = Menu(menubar, tearoff=0)
         menubar.add_cascade(label="File", menu=filemenu)
+        filemenu.add_command(label="Save", command=save_file)
         filemenu.add_command(label="Quit", command=root.quit)