Personal state API

This implements the personal state API which can run independently of running apps

This fixes #77 (closed)

preload/personal_state.py

+"""
+Personal State Script
+===========
+With this script you can 
+"""
+import buttons
+import color
+import display
+import os
+import personal_state
+
+states = [
+    ("No State", personal_state.NO_STATE),
+    ("No Contact", personal_state.NO_CONTACT),
+    ("Chaos", personal_state.CHAOS),
+    ("Communication", personal_state.COMMUNICATION),
+    ("Camp", personal_state.CAMP),
+]
+
+
+def button_events():
+    """Iterate over button presses (event-loop)."""
+    yield 0
+    button_pressed = False
+    while True:
+        v = buttons.read(buttons.BOTTOM_LEFT | buttons.BOTTOM_RIGHT | buttons.TOP_RIGHT)
+
+        if v == 0:
+            button_pressed = False
+
+        if not button_pressed and v & buttons.BOTTOM_LEFT != 0:
+            button_pressed = True
+            yield buttons.BOTTOM_LEFT
+
+        if not button_pressed and v & buttons.BOTTOM_RIGHT != 0:
+            button_pressed = True
+            yield buttons.BOTTOM_RIGHT
+
+        if not button_pressed and v & buttons.TOP_RIGHT != 0:
+            button_pressed = True
+            yield buttons.TOP_RIGHT
+
+
+COLOR1, COLOR2 = (color.CHAOSBLUE_DARK, color.CHAOSBLUE)
+
+
+def draw_menu(disp, idx, offset):
+    disp.clear()
+
+    for y, i in enumerate(range(len(states) + idx - 3, len(states) + idx + 4)):
+        selected = states[i % len(states)]
+        disp.print(
+            " " + selected[0] + " "*(11 - len(selected[0])),
+            posy=offset + y * 20 - 40,
+            bg=COLOR1 if i % 2 == 0 else COLOR2,
+        )
+
+    disp.print(">", posy=20, fg=color.COMMYELLOW, bg=COLOR2 if idx % 2 == 0 else COLOR1)
+    disp.update()
+
+
+def main():
+    disp = display.open()
+    numstates = len(states)
+    
+    current, _ = personal_state.get()
+    for ev in button_events():
+        if ev == buttons.BOTTOM_RIGHT:
+            # Scroll down
+            draw_menu(disp, current, -8)
+            current = (current + 1) % numstates
+            state = states[current]
+            personal_state.set(state[1], False)
+        elif ev == buttons.BOTTOM_LEFT:
+            # Scroll up
+            draw_menu(disp, current, 8)
+            current = (current + numstates - 1) % numstates
+            state = states[current]
+            personal_state.set(state[1], False)
+        elif ev == buttons.TOP_RIGHT:
+            state = states[current]
+            personal_state.set(state[1], True)
+            # Select & start
+            disp.clear().update()
+            disp.close()
+            os.exit(0)
+
+        draw_menu(disp, current, 0)
+
+
+if __name__ == "__main__":
+    main()