Abstract and enable qrscanner dialog for send screen.

gui/kivy/main_window.py

@@ -200,6 +200,14 @@ class ElectrumWindow(App):
     def set_url(self, instance, url):
         self.gui_object.set_url(url)
 
+    def scan_qr(self, on_complete):
+        dlg = Cache.get('electrum_widgets', 'QrScannerDialog')
+        if not dlg:
+            dlg = Factory.QrScannerDialog()
+            Cache.append('electrum_widgets', 'QrScannerDialog', dlg)
+            dlg.bind(on_complete=on_complete)
+        dlg.open()
+
     def build(self):
         global Builder
         if not Builder:

gui/kivy/qr_scanner/__init__.py

@@ -56,4 +56,5 @@ class ScannerBase(AnchorLayout):
 QRScanner = core_select_lib('qr_scanner', (
     ('android', 'scanner_android', 'ScannerAndroid'),
     ('camera', 'scanner_camera', 'ScannerCamera')), False, 'electrum_gui.kivy')
+
 Factory.register('QRScanner', cls=QRScanner)

gui/kivy/qr_scanner/scanner_camera.py

@@ -1,22 +1,28 @@
 from kivy.uix.camera import Camera
 from kivy.clock import Clock
+from kivy.utils import platform
 
-import iconv
 from electrum_gui.kivy.qr_scanner import ScannerBase
+
+import iconv 
+
 try:
     from zbar import ImageScanner, Config, Image, Symbol
 except ImportError:
-    raise SystemError('unable to import zbar please make sure you have it installed')
+    raise SystemError('unable to import zbar please make sure you have'
+        ' it installed.\nFor mac osx: `brew install zbar then\n`'
+        '`pip install https://github.com/npinchot/zbar/archive/d3c1611ad2411fbdc3e79eb96ca704a63d30ae69.zip`')
 try:
-    import Image as PILImage
+    from PIL import Image as PILImage
 except ImportError:
-    raise SystemError('unable to import Pil/pillow please install one of the two.')
+    raise SystemError('unable to import Pil/pillow'
+                      ' please install one of the two.')
 
 __all__ = ('ScannerCamera', )
 
 class ScannerCamera(ScannerBase):
-    '''Widget that use the kivy.uix.camera.Camera and zbar to detect qrcode.
-    When found, the `symbols` will be updated
+    '''Widget that use the kivy.uix.camera.Camera and zbar to detect
+    qrcode. When found, the `symbols` will be updated
     '''
 
     def __init__(self, **kwargs):
@@ -48,7 +54,8 @@ class ScannerCamera(ScannerBase):
         self._camera.play = False
         Clock.unschedule(self._detect_qrcode_frame)
         # TODO: testing for various platforms(windows, mac)
-        self._camera._camera._pipeline.set_state(1)
+        if platform == 'linux':
+            self._camera._camera._pipeline.set_state(1)
         #self._camera = None
 
     def _detect_qrcode_frame(self, *args):

gui/kivy/uix/dialogs/new_contact.py

@@ -9,12 +9,7 @@ class NewContactDialog(Factory.AnimatedPopup):
 
     def load_qr_scanner(self):
         self.dismiss()
-        dlg = Cache.get('electrum_widgets', 'QrScannerDialog')
-        if not dlg:
-            dlg = Factory.QrScannerDialog()
-            Cache.append('electrum_widgets', 'QrScannerDialog', dlg)
-            dlg.bind(on_complete=self.on_complete)
-        dlg.open()
+        App.get_running_app().scan_qr(on_complete=self.on_complete)
 
     def on_complete(self, instance, uri):
         self.new_contact(uri=uri)

gui/kivy/uix/dialogs/qr_scanner.py

@@ -4,9 +4,9 @@ from kivy.lang import Builder
 
 Factory.register('QRScanner', module='electrum_gui.kivy.qr_scanner')
 
-class QrScannerDialog(Factory.AnimaterPopup):
+class QrScannerDialog(Factory.AnimatedPopup):
 
-    __events__('on_complete', )
+    __events__ = ('on_complete', )
 
     def on_symbols(self, instance, value):
         instance.stop()
@@ -18,6 +18,11 @@ class QrScannerDialog(Factory.AnimaterPopup):
         #message = uir.get('message', '')
         self.dispatch('on_omplete', uri)
 
+    def on_complete(self):
+        ''' Default Handler for on_complete event.
+        '''
+        pass
+
 
 Builder.load_string('''
 <QrScannerDialog>
@@ -27,7 +32,7 @@ Builder.load_string('''
     title_size: '24sp'
     border: 7, 7, 7, 7
     size_hint: None, None
-    size: '320dp', '270dp'
+    size: '340dp', '290dp'
     pos_hint: {'center_y': .53}
     separator_color: .89, .89, .89, 1
     separator_height: '1.2dp'

gui/kivy/uix/screens.py

@@ -101,12 +101,13 @@ class MainScreen(Factory.Screen):
 
 class ScreenSend(CScreen):
 
-    def scan_qr(self):
-        pop = Factory.QrScannerDialog(on_complete=self.set_qr_data)
-        pop.open()
-
     def set_qr_data(self, uri):
-        self.ids.payto_e
+        self.ids.payto_e.text = uri.get('address')
+        self.ids.message_e.text = uri.get('message')
+        self.ids.amount_e.text = uri.get('amount')
+        #label = uri.get('label')
+        #if label:
+        # TODO: update label, add to contacts    
 
 
 class ScreenReceive(CScreen):

gui/kivy/uix/ui_screens/mainscreen.kv

@@ -336,7 +336,7 @@
                         pos_hint: {'center_y': .5}
                         size_hint: None, None
                         size: '22dp', '22dp'
-                        on_release: root.scan_qr()
+                        on_release: app.scan_qr(on_complete=root.set_qr_data)
                 CardSeparator
                     opacity: message_selection.opacity
                     color: blue_bottom.foreground_color