1 files changed, 57 insertions, 0 deletions
diff --git a/wasp/widgets.py b/wasp/widgets.py
index 970ab74..496b229 100644
--- a/wasp/widgets.py
+++ b/wasp/widgets.py
@@ -452,6 +452,63 @@ class Spinner():
 
         return False
 
+class Stopwatch:
+    """A stopwatch widget"""
+    def __init__(self, y):
+        self._y = y
+        self.reset()
+
+    def start(self):
+        uptime = wasp.watch.rtc.get_uptime_ms() // 10
+        self._started_at = uptime - self.count
+
+    def stop(self):
+        self._started_at = 0
+
+    @property
+    def started(self):
+        return bool(self._started_at)
+
+    def reset(self):
+        self.count = 0
+        self._started_at = 0
+        self._last_count = -1
+
+    def draw(self):
+        self._last_count = -1
+        self.update()
+
+    def update(self):
+        # Before we do anything else let's make sure count is
+        # up to date
+        if self._started_at:
+            uptime = wasp.watch.rtc.get_uptime_ms() // 10
+            self.count = uptime - self._started_at
+            if self.count > 999*60*100:
+                self.reset()
+
+        if self._last_count != self.count:
+            centisecs = self.count
+            secs = centisecs // 100
+            centisecs %= 100
+            minutes = secs // 60
+            secs %= 60
+
+            t1 = '{}:{:02}'.format(minutes, secs)
+            t2 = '{:02}'.format(centisecs)
+
+            y = self._y
+            draw = wasp.watch.drawable
+            draw.set_font(fonts.sans36)
+            draw.set_color(draw.lighten(wasp.system.theme('ui'), wasp.system.theme('contrast')))
+            w = fonts.width(fonts.sans36, t1)
+            draw.string(t1, 180-w, y)
+            draw.fill(0, 0, y, 180-w, 36)
+            draw.set_font(fonts.sans24)
+            draw.string(t2, 180, y+18, width=46)
+
+            self._last_count = self.count
+
 class ConfirmationView:
     """Confirmation widget allowing user confirmation of a setting."""