From b9196260cfd515363a026c3bfc7bc7aa757965a0 Mon Sep 17 00:00:00 2001
From: slush <info@bitcoin.cz>
Date: Sun, 17 Mar 2013 13:51:29 +0100
Subject: [PATCH] Move is_available() logic to init(), to prevent camera wakeup
 every second.

---
 plugins/qrscanner.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/plugins/qrscanner.py b/plugins/qrscanner.py
index f66e60b00..6e327a27c 100644
--- a/plugins/qrscanner.py
+++ b/plugins/qrscanner.py
@@ -13,8 +13,9 @@ class Plugin(BasePlugin):
 
     def __init__(self, gui):
         BasePlugin.__init__(self, gui, 'qrscans', 'QR scans', "QR Scans.\nInstall the zbar package to enable this plugin")
+        self._is_available = self._init()
         
-    def is_available(self):
+    def _init(self):
         if not zbar:
             return False
         try:
@@ -23,8 +24,11 @@ class Plugin(BasePlugin):
         except zbar.SystemError:
             # Cannot open video device
             return False
+
         return True
 
+    def is_available(self):
+        return self._is_available
 
     def create_send_tab(self, grid):
         b = QPushButton(_("Scan QR code"))