Add new variable 'url' to forge the QRCode url

README.rst

@@ -35,7 +35,7 @@ Here below the new configuration options available in the `pibooth`_ configurati
     background = (0, 0, 0)
 
     # Optional text displayed close to the QR code
-    side_text = 
+    side_text =
 
     # Offset (x, y) from location
     offset = (20, 40)
@@ -55,7 +55,10 @@ The URL linked to the QR code can be define dynamically using some state variabl
 options. Available variables to forge the URL are:
 
 - **picture** : current picture filename
-- **count** : current counters. You can access to values using ``{count.xxx}`` (see counters in configuration menu)
+- **count** : current counters. You can access to values using ``{count.xxx}`` (see counters
+              in configuration menu)
+- **url** : URL defined in the ``app.previous_picture_url`` attribute. This attribute can be
+            defined by another plugin.
 
 For instance, ``https://photos.google.com/share/AxFF4t56kiJiu89m/{picture}`` will generate::
 

pibooth_qrcode.py

@@ -11,7 +11,7 @@
 import pibooth
 from pibooth.view.background import multiline_text_to_surfaces
 
-__version__ = "1.0.1"
+__version__ = "1.0.2"
 
 
 SECTION = 'QRCODE'
@@ -130,7 +130,7 @@ def state_wait_do(app, win):
                 win.surface.blit(text, rect)
 
 
-@pibooth.hookimpl
+@pibooth.hookimpl(trylast=True)
 def state_processing_exit(cfg, app):
     """
     Generate the QR Code and store it in the application.
@@ -143,7 +143,8 @@ def state_processing_exit(cfg, app):
                        border=1)
 
     url_vars = {'picture': app.picture_filename,
-                'count': app.count}
+                'count': app.count,
+                'url': getattr(app, 'previous_picture_url', None) or ''}
 
     qr.add_data(cfg.get(SECTION, 'prefix_url').format(**url_vars))
     qr.make(fit=True)