Introduction basic notification support

This requires a modified version of Gadgetbridge and currently works by
implementing the BangleJS protocol.

In Gadgetbridge ensure "Sync time" is *not* set and choose "Don't pair"
when adding the PineTime device.

3 files changed, 50 insertions, 8 deletions

diff --git a/wasp/apps/clock.py b/wasp/apps/clock.py
index f09f2d4..a3134a0 100644
--- a/wasp/apps/clock.py
+++ b/wasp/apps/clock.py
@@ -35,6 +35,7 @@ class ClockApp():
 
     def __init__(self):
         self.meter = wasp.widgets.BatteryMeter()
+        self.notifier = wasp.widgets.Notifier()
 
     def foreground(self):
         """Activate the application."""
@@ -87,4 +88,5 @@ class ClockApp():
                 0, 180, width=240)
 
         self.meter.update()
+        self.notifier.update()
         return True
diff --git a/wasp/apps/pager.py b/wasp/apps/pager.py
index 18322d2..edb5418 100644
--- a/wasp/apps/pager.py
+++ b/wasp/apps/pager.py
@@ -26,16 +26,13 @@ class PagerApp():
 
     def foreground(self):
         """Activate the application."""
-        self._page = 0
-        self._chunks = wasp.watch.drawable.wrap(self._msg, 240)
-        self._numpages = (len(self._chunks) - 2) // 9
         wasp.system.request_event(wasp.EventMask.SWIPE_UPDOWN)
-        self._draw()
+        self._redraw()
 
     def background(self):
         """De-activate the application."""
-        del self._chunks
-        del self._numpages
+        self._chunks = None
+        self._numpages = None
 
     def swipe(self, event):
         """Swipe to page up/down."""
@@ -55,8 +52,15 @@ class PagerApp():
         self._draw()
         mute(False)
 
+    def _redraw(self):
+        """Redraw from scratch (jump to the first page)"""
+        self._page = 0
+        self._chunks = wasp.watch.drawable.wrap(self._msg, 240)
+        self._numpages = (len(self._chunks) - 2) // 9
+        self._draw()
+
     def _draw(self):
-        """Draw the display from scratch."""
+        """Draw a page from scratch."""
         draw = wasp.watch.drawable
         draw.fill()
 
@@ -73,6 +77,22 @@ class PagerApp():
         scroll.down = page < self._numpages
         scroll.draw()
 
+class NotificationApp(PagerApp):
+    NAME = 'Notifications'
+
+    def __init__(self):
+        super().__init__('')
+
+    def foreground(self):
+        notes = wasp.system.notifications
+
+        id = next(iter(notes))
+        note = notes[id]
+        del notes[id]
+        self._msg = '{}\n\n{}'.format(note['title'], note['body'])
+
+        super().foreground()
+
 class CrashApp():
     """Crash handler application.
 
diff --git a/wasp/apps/testapp.py b/wasp/apps/testapp.py
index a312530..e2e8828 100644
--- a/wasp/apps/testapp.py
+++ b/wasp/apps/testapp.py
@@ -16,7 +16,7 @@ class TestApp():
     ICON = icons.app
 
     def __init__(self):
-        self.tests = ('Button', 'Crash', 'Colours', 'Fill', 'Fill-H', 'Fill-V', 'RLE', 'String', 'Touch', 'Wrap')
+        self.tests = ('Button', 'Crash', 'Colours', 'Fill', 'Fill-H', 'Fill-V', 'Notifications', 'RLE', 'String', 'Touch', 'Wrap')
         self.test = self.tests[0]
         self.scroll = wasp.widgets.ScrollIndicator()
 
@@ -70,6 +70,19 @@ class TestApp():
                 self._update_colours()
         elif self.test.startswith('Fill'):
             self._benchmark_fill()
+        elif self.test == 'Notifications':
+            if event[1] < 120:
+                wasp.system.notify(wasp.watch.rtc.get_uptime_ms(),
+                    {
+                        "src":"Hangouts",
+                        "title":"A Name",
+                        "body":"message contents"
+                    })
+            else:
+                if wasp.system.notifications:
+                    wasp.system.unnotify(
+                            next(iter(wasp.system.notifications.keys())))
+            self._update_notifications()
         elif self.test == 'RLE':
             self._benchmark_rle()
         elif self.test == 'String':
@@ -166,6 +179,10 @@ class TestApp():
             for s in self._sliders:
                 s.draw()
             self._update_colours()
+        elif self.test == 'Notifications':
+            draw.string('+', 24, 100)
+            draw.string('-', 210, 100)
+            self._update_notifications()
         elif self.test == 'RLE':
             draw.blit(self.ICON, 120-48, 120-32)
 
@@ -181,3 +198,6 @@ class TestApp():
 
         draw.string('RGB565 #{:04x}'.format(rgb), 0, 6, width=240)
         draw.fill(rgb, 60, 35, 120, 50)
+
+    def _update_notifications(self):
+        wasp.watch.drawable.string(str(len(wasp.system.notifications)), 0, 140, 240)