def add_screen(self, screen_name):
# Get the info we need to import this screen
foundscreen = [p for p in getPlugins() if p["name"] == screen_name]
# Check we've found a screen and it's not already running
if foundscreen and screen_name not in self.available_screens:
# Get the details for the screen
p = foundscreen[0]
# Import it
plugin = imp.load_module("screen", *p["info"])
# Get the reference to the screen class
screen = getattr(plugin, p["screen"])
# Add the KV file to the builder
Builder.load_file(p["kvpath"])
# Add the screen
self.scrmgr.add_widget(
screen(name=p["name"], master=self, params=p["params"]))
# Add to our list of available screens
self.available_screens.append(screen_name)
# Activate screen
self.switch_to(screen_name)
elif screen_name in self.available_screens:
# This shouldn't happen but we need this to prevent duplicates
self.reload_screen(screen_name)
def remove_screen(self, screen_name):
# Get the list of screens
foundscreen = [
p for p in getPlugins(inactive=True) if p["name"] == screen_name
]
# Loop over list of available screens
while screen_name in self.available_screens:
# Remove screen from list of available screens
self.available_screens.remove(screen_name)
# Change the display to the next screen
self.next_screen()
# Find the screen in the screen manager
c = self.scrmgr.get_screen(screen_name)
# Call its "unload" method:
if hasattr(c, "unload"):
c.unload()
# Delete the screen
self.scrmgr.remove_widget(c)
del c
try:
# Remove the KV file from our builder
Builder.unload_file(foundscreen[0]["kvpath"])
except IndexError:
pass
def process_plugins(self):
# Build a dictionary of screens, their current state and whether or not
# they provide a custom screen
self.screens = {
s["name"]: {
"web": s["web"],
"enabled": s["enabled"]
}
for s in getPlugins(True)
}
# Set the current working directory
os.chdir(os.path.dirname(os.path.abspath(sys.argv[0])))
VERSION = "0.3.1"
class InfoScreenApp(App):
def build(self):
# Window size is hardcoded for resolution of official Raspberry Pi
# display. Can be altered but plugins may not display correctly.
Window.size = (800, 480)
return InfoScreen(plugins=plugins)
if __name__ == "__main__":
# Get a list of installed plugins
plugins = getPlugins()
# Get the base KV language file for the Info Screen app.
kv_text = "".join(open("base.kv").readlines()) + "\n"
# Loop over the plugins
for p in plugins:
# and add their custom KV files to create one master KV file
kv_text += "".join(p["kv"])
# Load the master KV file
Builder.load_string(kv_text)
# Good to go. Let's start the app.
InfoScreenApp().run()
def build(self):
# Window size is hardcoded for resolution of official Raspberry Pi
# display. Can be altered but plugins may not display correctly.
Window.size = (800, 480)
self.base = InfoScreen(plugins=plugins)
return self.base
if __name__ == "__main__":
# Load our config
with open("config.json", "r") as cfg_file:
config = json.load(cfg_file)
# Get a list of installed plugins
plugins = getPlugins()
# Get the base KV language file for the Info Screen app.
kv_text = "".join(open("base.kv").readlines()) + "\n"
# Load the master KV file
# Builder.load_string(kv_text)
Builder.load_file("base.kv")
# Loop over the plugins
for p in plugins:
# and add their custom KV files to create one master KV file
# kv_text += "".join(p["kv"])
Builder.load_file(p["kvpath"])