# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1482187819 -3600
# Node ID 674b1fa3c945660350022af285b5f98a4f087a2e
# Parent  1a324c682d8aac40852ed983d5222b90916f4373
core: use memory map on a file to indicate pause/resume status, so backend can now it

diff -r 1a324c682d8a -r 674b1fa3c945 src/cagou/core/cagou_main.py
--- a/src/cagou/core/cagou_main.py	Sun Dec 18 21:01:04 2016 +0100
+++ b/src/cagou/core/cagou_main.py	Mon Dec 19 23:50:19 2016 +0100
@@ -69,6 +69,7 @@
     # sys.platform is "linux" on android by default
     # so we change it to allow backend to detect android
     sys.platform = "android"
+    import mmap
 
 
 class NotifsIcon(IconButton):
@@ -226,11 +227,31 @@
         """
         return os.path.expanduser(path).format(*args, media=self.host.media_dir, **kwargs)
 
+    def on_start(self):
+        # XXX: we use memory map instead of bridge because if we try to call a bridge method
+        #      in on_pause method, the call data  is not written before the actual pause
+        # we create a memory map on .cagou_status file with a 1 byte status
+        # status is:
+        # R => running
+        # P => paused
+        # S => stopped
+        self._first_pause = True
+        self.cagou_status_fd = open('.cagou_status', 'wb+')
+        self.cagou_status_fd.write('R')
+        self.cagou_status_fd.flush()
+        self.cagou_status = mmap.mmap(self.cagou_status_fd.fileno(), 1, prot=mmap.PROT_WRITE)
+
     def on_pause(self):
+        self.cagou_status[0] = 'P'
         return True
 
     def on_resume(self):
-        pass
+        self.cagou_status[0] = 'R'
+
+    def on_stop(self):
+        self.cagou_status[0] = 'S'
+        self.cagou_status.flush()
+        self.cagou_status_fd.close()
 
 
 class Cagou(QuickApp):