Add Windows positions file read and applied at startup

trackmultiplefaces.py

@@ -12,7 +12,7 @@ from colour import Color
 from threading import Thread
 import time
 import random
-# import tkinter as tk
+import json # To write and read windows positions
 
 import randomnames
 
@@ -77,7 +77,7 @@ def list_available_cameras():
 
 class facetracker:
 
-#We are not doing really face recognition
+#We are not really doing face recognition
     # def doRecognizePerson(self, faceNames, fid):
     #     time.sleep(2)
     #     faceNames[ fid ] = randomnames.rand_name_statistic(charset) #"Person " + str(fid)
@@ -575,6 +575,21 @@ if __name__ == '__main__':
 
         facetrackerList.append(facetracker(camera_id, videoName))
 
+    data={}
+    try:
+        with open('windows_pos.json') as f:
+            data = json.load(f)
+    except EnvironmentError: # parent of IOError, OSError *and* WindowsError where available
+        print ('Windows position file not found: random position')
+    else:
+        print(data)
+# To move windows to the previous positions
+        i = 0
+        for camera in facetrackerList:
+            cv2.namedWindow(camera.videoName, cv2.WINDOW_NORMAL)
+            cv2.resizeWindow(camera.videoName, int(data["WindowsList"][i]["width"]), int(data["WindowsList"][i]["height"]))
+            cv2.moveWindow(camera.videoName, int(data["WindowsList"][i]["X"]), int(data["WindowsList"][i]["Y"]))
+            i+=1
 
     while True:
         try:

windows_pos.json

+{
+  "WindowsList": [
+    {
+      "X": "0",
+      "Y": "0",
+      "width": "960",
+      "height": "1200"
+    },
+    {
+      "X": "961",
+      "Y": "0",
+      "width": "960",
+      "height": "1200"
+    },
+    {
+      "X": "20",
+      "Y": "20",
+      "width": "640",
+      "height": "480"
+    },
+    {
+      "X": "30",
+      "Y": "30",
+      "width": "640",
+      "height": "480"
+    }
+  ]
+}