kivy: share with qr code on double tap

gui/kivy/main.kv

@@ -128,11 +128,11 @@
 <RefLabel@TopLabel>
     font_size: '6pt'
     ref_text: ''
-    text: '[ref=x]%s[/ref]' % self.ref_text
+    text: self.ref_text
     padding: '10dp', '10dp'
-    on_ref_press:
-        app._clipboard.copy(self.ref_text)
-        app.show_info(_('Text copied to clipboard'))
+    on_touch_down:
+        touch = args[1]
+        if self.collide_point(*touch.pos): app.on_ref_label(self.ref_text, touch)
     canvas.before:
         Color:
             rgb: .3, .3, .3
@@ -143,7 +143,7 @@
 <TxHashLabel@RefLabel>
     tx_hash: ''
     ref_text: self.tx_hash
-    text: '[ref=x]%s[/ref]' %' '.join(map(''.join, zip(*[iter(self.tx_hash)]*4))) if self.tx_hash else ''
+    text: ' '.join(map(''.join, zip(*[iter(self.tx_hash)]*4))) if self.tx_hash else ''
 
 <InfoBubble>
     size_hint: None, None

gui/kivy/main_window.py

@@ -600,6 +600,13 @@ class ElectrumWindow(App):
         self._orientation = 'landscape' if width > height else 'portrait'
         self._ui_mode = 'tablet' if min(width, height) > inch(3.51) else 'phone'
 
+    def on_ref_label(self, text, touch):
+        if touch.is_double_tap:
+            self.qr_dialog(_('Share with QR Code'), text)
+        else:
+            self._clipboard.copy(text)
+            self.show_info(_('Text copied to clipboard'))
+
     def set_send(self, address, amount, label, message):
         self.send_payment(address, amount=amount, label=label, message=message)
 

gui/kivy/uix/dialogs/qr_dialog.py

@@ -5,6 +5,7 @@ Builder.load_string('''
 <QRDialog@Popup>
     id: popup
     title: ''
+    data: ''
     shaded: False
     AnchorLayout:
         anchor_x: 'center'
@@ -13,6 +14,8 @@ Builder.load_string('''
             size_hint: 1, 1
             QRCodeWidget:
                 id: qr
+            TopLabel:
+                text: root.data
             Widget:
                 size_hint: 1, 0.2
             BoxLayout:

gui/kivy/uix/ui_screens/receive.kv

@@ -35,9 +35,10 @@ ReceiveScreen:
                 width: min(self.height, bl.width)
                 pos_hint: {'center': (.5, .5)}
                 shaded: False
+                foreground_color: (0, 0, 0, 0.5) if self.shaded else (0, 0, 0, 0)
                 on_touch_down:
-                    self.shaded = not self.shaded
-                    self.foreground_color = (0, 0, 0, 0.5) if self.shaded else (0, 0, 0, 0)
+                    touch = args[1]
+                    if self.collide_point(*touch.pos): self.shaded = not self.shaded
             Label:
                 text: root.status
                 opacity: 1 if root.status else 0
@@ -52,7 +53,6 @@ ReceiveScreen:
                         pos: self.pos
                         size: self.size
 
-
         SendReceiveBlueBottom:
             id: blue_bottom
             size_hint: 1, None