openCom-Companion/sbapp/kivymd/app.py

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2022-07-07 22:16:10 +02:00
"""
Themes/Material App
===================
This module contains :class:`MDApp` class that is inherited from
:class:`~kivy.app.App`. :class:`MDApp` has some properties needed for ``KivyMD``
library (like :attr:`~MDApp.theme_cls`). You can turn on the monitor displaying
the current ``FPS`` value in your application:
.. code-block:: python
KV = '''
MDScreen:
MDLabel:
text: "Hello, World!"
halign: "center"
'''
from kivy.lang import Builder
from kivymd.app import MDApp
class MainApp(MDApp):
def build(self):
return Builder.load_string(KV)
def on_start(self):
self.fps_monitor_start()
MainApp().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/fps-monitor.png
:width: 350 px
:align: center
"""
__all__ = ("MDApp",)
import os
from kivy.app import App
from kivy.lang import Builder
from kivy.logger import Logger
from kivy.properties import ObjectProperty
from kivymd.theming import ThemeManager
class FpsMonitoring:
"""Implements a monitor to display the current FPS in the toolbar."""
def fps_monitor_start(self) -> None:
"""Adds a monitor to the main application window."""
from kivy.core.window import Window
from kivymd.utils.fpsmonitor import FpsMonitor
monitor = FpsMonitor()
monitor.start()
Window.add_widget(monitor)
class MDApp(App, FpsMonitoring):
"""
Application class, see :class:`~kivy.app.App` class documentation for more
information.
"""
theme_cls = ObjectProperty()
"""
Instance of :class:`~ThemeManager` class.
.. Warning:: The :attr:`~theme_cls` attribute is already available
in a class that is inherited from the :class:`~MDApp` class.
The following code will result in an error!
.. code-block:: python
class MainApp(MDApp):
theme_cls = ThemeManager()
theme_cls.primary_palette = "Teal"
.. Note:: Correctly do as shown below!
.. code-block:: python
class MainApp(MDApp):
def build(self):
self.theme_cls.primary_palette = "Teal"
:attr:`theme_cls` is an :class:`~kivy.properties.ObjectProperty`.
"""
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.theme_cls = ThemeManager()
def load_all_kv_files(self, path_to_directory: str) -> None:
"""
Recursively loads KV files from the selected directory.
.. versionadded:: 1.0.0
"""
for path_to_dir, dirs, files in os.walk(path_to_directory):
# When using the `load_all_kv_files` method, all KV files
# from the `KivyMD` library were loaded twice, which leads to
# failures when using application built using `PyInstaller`.
if "kivymd" in path_to_directory:
Logger.critical(
"KivyMD: "
"Do not use the word 'kivymd' in the name of the directory "
"from where you download KV files"
)
if (
"venv" in path_to_dir
or ".buildozer" in path_to_dir
or os.path.join("kivymd") in path_to_dir
):
continue
for name_file in files:
if (
os.path.splitext(name_file)[1] == ".kv"
and name_file != "style.kv" # if use PyInstaller
and "__MACOS" not in path_to_dir # if use Mac OS
):
path_to_kv_file = os.path.join(path_to_dir, name_file)
Builder.load_file(path_to_kv_file)