add a default YAML and change config to use it.

config.yaml

@@ -16,6 +16,7 @@ config:
   # - Cyberpunk
   # - bash-dark-green
   # - bash-dark-green-gpu
+  # - BigClock
   THEME: 3.5inchTheme2
 
   # Hardware sensors reading

library/config.py

@@ -35,6 +35,7 @@ def load_yaml(configfile):
 
 PATH = sys.path[0]
 CONFIG_DATA = load_yaml("config.yaml")
+THEME_DEFAULT = load_yaml("res/themes/default.yaml")
 
 try:
     theme_path = "res/themes/" + CONFIG_DATA['config']['THEME'] + "/"
@@ -48,5 +49,16 @@ def load_yaml(configfile):
     except:
         os._exit(0)
 
+def copy_default(default, theme):
+    "recursively supply default values into a dict of dicts of dicts ...."
+    for k,v in default.items():
+        if k not in theme:
+            theme[k] = v
+        if type(v) == type({}):
+            copy_default(default[k], theme[k])
+
+
+copy_default(THEME_DEFAULT, THEME_DATA)
+
 # Queue containing the serial requests to send to the screen
 update_queue = queue.Queue()

library/display.py

@@ -97,7 +97,7 @@ def initialize_display(self):
         self.lcd.SetOrientation(_get_theme_orientation())
 
     def display_static_images(self):
-        if THEME_DATA['static_images']:
+        if THEME_DATA.get('static_images', False):
             for image in THEME_DATA['static_images']:
                 logger.debug(f"Drawing Image: {image}")
                 self.lcd.DisplayBitmap(
@@ -109,7 +109,7 @@ def display_static_images(self):
                 )
 
     def display_static_text(self):
-        if THEME_DATA['static_text']:
+        if THEME_DATA.get('static_text', False):
             for text in THEME_DATA['static_text']:
                 logger.debug(f"Drawing Text: {text}")
                 self.lcd.DisplayText(

res/themes/BigClock/theme.yaml

@@ -0,0 +1,48 @@
+---
+display:
+  # Specify the display orientation for this theme: portrait or landscape
+  DISPLAY_ORIENTATION: landscape
+
+static_images:
+  # Specify what static images we want to show on the display
+  # You can create additional records here, the name of the entry must be unique and contain at a minimum the PATH.
+  # Images are drawn in the order they are listed below, the top image will be drawn first (so places images back to front)
+  # IMAGE_NAME:
+  #   PATH:
+  #   X:
+  #   Y:
+  #   WIDTH:
+  #   HEIGHT:
+  BACKGROUND:
+    PATH: blackground-landscape.png
+    X: 0
+    Y: 0
+    WIDTH: 480
+    HEIGHT: 320
+
+STATS:
+  # Backplate RGB LED color (for HW revision 'flagship' devices only)
+  DISPLAY_RGB_LED: 255, 0, 0
+  DATE:
+    # In seconds. Longer intervals cause this to refresh more slowly.
+    # Setting to lower values will display near real time data,
+    # but may cause significant CPU usage or the display not to update properly
+    INTERVAL: 1
+    DAY:
+      TEXT:
+        SHOW: True
+        X: 10
+        Y: 16
+        FONT: roboto/Roboto-Bold.ttf
+        FONT_SIZE: 80
+        FONT_COLOR: 200, 200, 200
+        BACKGROUND_COLOR: 0, 0, 0
+    HOUR:
+      TEXT:
+        SHOW: True
+        X: 10
+        Y: 160
+        FONT: roboto/Roboto-Bold.ttf
+        FONT_SIZE: 80
+        FONT_COLOR: 200, 200, 200
+        BACKGROUND_COLOR: 50, 0, 0

res/themes/default.yaml

@@ -0,0 +1,135 @@
+STATS:
+  CPU:
+    PERCENTAGE:
+      # In seconds. Longer intervals cause this to refresh more slowly.
+      # Setting to lower values will display near real time data,
+      # but may cause significant CPU usage or the display not to update properly
+      INTERVAL: 1
+      TEXT:
+        SHOW: False
+      GRAPH:
+        SHOW: False
+    FREQUENCY:
+      # In seconds. Longer intervals cause this to refresh more slowly.
+      # Setting to lower values will display near real time data,
+      # but may cause significant CPU usage or the display not to update properly
+      INTERVAL: 5
+      TEXT:
+        SHOW: False
+    LOAD:
+      # In seconds. Longer intervals cause this to refresh more slowly.
+      # Setting to lower values will display near real time data,
+      # but may cause significant CPU usage or the display not to update properly
+      INTERVAL: 5
+      ONE:
+        TEXT:
+          SHOW: False
+      FIVE:
+        TEXT:
+          SHOW: False
+      FIFTEEN:
+        TEXT:
+          SHOW: False
+    TEMPERATURE:
+      INTERVAL: 5
+      TEXT:
+        SHOW: False
+  GPU:
+    # In seconds. Longer intervals cause this to refresh more slowly.
+    # Setting to lower values will display near real time data,
+    # but may cause significant CPU usage or the display not to update properly
+    INTERVAL: 1
+    PERCENTAGE:
+      GRAPH:
+        SHOW: False
+      TEXT:
+        SHOW: False
+    MEMORY:
+      GRAPH:
+        SHOW: False
+      TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+    TEMPERATURE:
+      TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+  MEMORY:
+    # In seconds. Longer intervals cause this to refresh more slowly.
+    # Setting to lower values will display near real time data,
+    # but may cause significant CPU usage or the display not to update properly
+    INTERVAL: 5
+    SWAP:
+      GRAPH:
+        SHOW: False
+    VIRTUAL:
+      GRAPH:
+        SHOW: False
+      USED:
+        SHOW: False
+        SHOW_UNIT: False
+      FREE:
+        SHOW: False
+        SHOW_UNIT: False
+      PERCENT_TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+  DISK:
+    INTERVAL: 10
+    USED:
+      GRAPH:
+        SHOW: False
+      TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+      PERCENT_TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+    TOTAL:
+      TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+    FREE:
+      TEXT:
+        SHOW: False
+        SHOW_UNIT: False
+  NET:
+    INTERVAL: 1
+    WLO:
+      UPLOAD:
+        TEXT:
+          SHOW: False
+      UPLOADED:
+        TEXT:
+          SHOW: False
+      DOWNLOAD:
+        TEXT:
+          SHOW: False
+      DOWNLOADED:
+        TEXT:
+          SHOW: False
+    ETH:
+      UPLOAD:
+        TEXT:
+          SHOW: False
+      UPLOADED:
+        TEXT:
+          SHOW: False
+      DOWNLOAD:
+        TEXT:
+          SHOW: False
+      DOWNLOADED:
+        TEXT:
+          SHOW: False
+  DATE:
+    # In seconds. Longer intervals cause this to refresh more slowly.
+    # Setting to lower values will display near real time data,
+    # but may cause significant CPU usage or the display not to update properly
+    INTERVAL: 1
+    DAY:
+      TEXT:
+        SHOW: False
+    HOUR:
+      TEXT:
+        SHOW: False
+