widgets: status: Add a status bar combo widget

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

wasp/icons.py

@@ -151,27 +151,28 @@ knob = (
     b'\x16\xd0\x1c\xc8\x10'
 )
 
-# 2-bit RLE, generated from res/notification.png, 105 bytes
+# 2-bit RLE, generated from res/notification.png, 104 bytes
 notification = (
     b'\x02'
-    b'  '
-    b'\x0f\xc2\x1d\xc4\x1c\xc4\x19\xca\x14\xce\x11\xd0\x0f\xd2\x0e\xc5'
-    b'\x08\xc5\r\xc4\x0c\xc4\x0c\xc4\x0c\xc4\x0b\xc4\x0e\xc4\n\xc4'
-    b'\x0e\xc4\n\xc4\x0e\xc4\n\xc3\x0f\xc4\t\xc4\x10\xc3\t\xc4'
-    b'\x10\xc4\x08\xc4\x10\xc4\x08\xc4\x10\xc4\x08\xc4\x10\xc4\x08\xc3'
-    b'\x11\xc4\x07\xc4\x12\xc4\x06\xc4\x12\xc4\x06\xc4\x12\xc4\x05\xc5'
-    b'\x12\xc4\x05\xc4\x14\xc4\x03\xc5\x14\xc5\x02\xde\x01\xff\x01\x01'
-    b'\xde\x0f\xc4\x1d\xc2\x0f'
+    b'\x1e '
+    b'\x0e\xc2\x1b\xc4\x1a\xc4\x18\xc8\x14\xcc\x11\xce\x0f\xd0\x0e\xc5'
+    b'\x06\xc5\r\xc4\n\xc4\x0c\xc4\n\xc4\x0b\xc4\x0c\xc4\n\xc4'
+    b'\x0c\xc4\n\xc4\x0c\xc4\n\xc3\r\xc4\t\xc4\x0e\xc3\t\xc4'
+    b'\x0e\xc4\x08\xc4\x0e\xc4\x08\xc4\x0e\xc4\x08\xc4\x0e\xc4\x08\xc3'
+    b'\x0f\xc4\x07\xc4\x10\xc4\x06\xc4\x10\xc4\x06\xc4\x10\xc4\x05\xc5'
+    b'\x10\xc4\x05\xc4\x12\xc4\x03\xc5\x12\xc5\x02\xdc\x01\xfc\x01\xdc'
+    b'\x0e\xc4\x1b\xc2\x0e'
 )
+
 # 2-bit RLE, generated from res/blestatus.png, 104 bytes
 blestatus = (
     b'\x02'
-    b'\x11 '
-    b'\x07\xc1\x10\xc2\x0f\xc3\x0e\xc4\r\xc5\x0c\xc6\x0b\xc7\n\xc3'
-    b'\x01\xc4\x03\xc2\x04\xc3\x02\xc4\x01\xc4\x03\xc3\x03\xc4\x01\xc4'
-    b'\x02\xc3\x02\xc4\x03\xc4\x01\xc3\x01\xc4\x05\xcb\x07\xc9\t\xc7'
-    b'\x0b\xc5\x0c\xc5\x0b\xc7\t\xc9\x07\xcb\x05\xc4\x01\xc3\x01\xc4'
-    b'\x03\xc4\x02\xc3\x02\xc4\x01\xc4\x03\xc3\x03\xc4\x01\xc2\x04\xc3'
-    b'\x02\xc4\x08\xc3\x01\xc4\t\xc7\n\xc6\x0b\xc5\x0c\xc4\r\xc3'
-    b'\x0e\xc2\x0f\xc1\t'
+    b'\x16 '
+    b'\x07\xc1\x15\xc2\x14\xc3\x13\xc4\x12\xc5\x11\xc6\x10\xc7\x0f\xc3'
+    b'\x01\xc4\x08\xc2\x04\xc3\x02\xc4\x06\xc4\x03\xc3\x03\xc4\x06\xc4'
+    b'\x02\xc3\x02\xc4\x08\xc4\x01\xc3\x01\xc4\n\xcb\x0c\xc9\x0e\xc7'
+    b'\x10\xc5\x11\xc5\x10\xc7\x0e\xc9\x0c\xcb\n\xc4\x01\xc3\x01\xc4'
+    b'\x08\xc4\x02\xc3\x02\xc4\x06\xc4\x03\xc3\x03\xc4\x06\xc2\x04\xc3'
+    b'\x02\xc4\r\xc3\x01\xc4\x0e\xc7\x0f\xc6\x10\xc5\x11\xc4\x12\xc3'
+    b'\x13\xc2\x14\xc1\x0e'
 )

wasp/widgets.py

@@ -115,19 +115,22 @@ class Clock:
 
 class NotificationBar:
     """Show BT status and if there are pending notifications."""
-    def __init__(self, x=8, y=8):
+    def __init__(self, x=2, y=8):
         self._pos = (x, y)
 
     def draw(self):
-        """Update the notification widget.
+        """Redraw the notification widget.
 
         For this simple widget :py:meth:`~.draw` is simply a synonym for
-        :py:meth:`~.update`.
+        :py:meth:`~.update` because we unconditionally update from scratch.
         """
         self.update()
 
     def update(self):
         """Update the widget.
+
+        This widget does not implement lazy redraw internally since this
+        can often be implemented (with less state) by the container.
         """
         draw = watch.drawable
         (x, y) = self._pos
@@ -135,14 +138,50 @@ class NotificationBar:
         if wasp.watch.connected():
             draw.blit(icons.blestatus, x, y, fg=0x7bef)
             if wasp.system.notifications:
-                draw.blit(icons.notification, x+24, y, fg=0x7bef)
+                draw.blit(icons.notification, x+22, y, fg=0x7bef)
             else:
-                draw.fill(0, x+24, y, 32, 32)
+                draw.fill(0, x+22, y, 30, 32)
         elif wasp.system.notifications:
             draw.blit(icons.notification, x, y, fg=0x7bef)
-            draw.fill(0, x+32, y, 32, 32)
+            draw.fill(0, x+30, y, 22, 32)
         else:
-            draw.fill(0, x, y, 56, 32)
+            draw.fill(0, x, y, 52, 32)
+
+class StatusBar:
+    """Combo widget to handle notification, time and battery level."""
+    def __init__(self):
+        self._clock = Clock()
+        self._meter = BatteryMeter()
+        self._notif = NotificationBar()
+
+    @property
+    def clock(self):
+        """True if the clock should be included in the status bar, False
+        otherwise.
+        """
+        return self._clock.enabled
+
+    @clock.setter
+    def clock(self, enabled):
+        self._clock.enabled = enabled
+
+    def draw(self):
+        """Redraw the status bar from scratch."""
+        self._clock.draw()
+        self._meter.draw()
+        self._notif.draw()
+
+    def update(self):
+        """Lazily update the status bar.
+
+        :returns: An time tuple if the time has changed since the last call,
+                  None otherwise.
+        """
+        now = self._clock.update()
+        if now:
+            self._meter.update()
+            self._notif.update()
+        return now
 
 class ScrollIndicator:
     """Scrolling indicator.