8000 Add code for a Freedom Units demo app. · Positive-Conative/pyscript@7ce66b5 · GitHub
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Add code for a Freedom Units demo app.
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‎pyscriptjs/examples/toga/README.md

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# Freedom Units!
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This is a demo Toga app implementing a Fahrenheit to Celsius converter.
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## Initial setup
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1. Create and activate a virtual environment:
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$ python -m venv venv
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$ . ./venv/bin/activate
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2. Install the demo requirements:
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$ pip install -r requirements.txt
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### Development details
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This demo bakes a pre-compiled version of pyscript into the `server/pyscript`
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directory.
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It also includes an experimental version of toga-core, toga-web and toga-flask,
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packaged as wheels in the `server/wheels` directory.
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If any changes are made to the Toga sources or to PyScript, these vendored
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resources will need to be updated.
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## Web app
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The web app is a demo Flask server, serving a web app version of Toga at the
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root URL. To run the web demo server:
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$ cd server
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$ PYTHONPATH=../freedom/src python -m demo
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then point your browser at http://localhost:8081/
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Enter a value in the "farenheit" input, and click the "calculate" button.
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It may take a few seconds for this button to become live; look for the
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"Collecting nodes..." entry in the console log.
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## Desktop app
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To run this app in development mode:
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$ briefcase dev
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To build and run an app bundle:
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$ briefcase run
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If you're on an M1 macOS, this will raise an error on first run; if you get this error, run:
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$ briefcase package -p app --adhoc-sign
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then re-run `briefcase run`
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## iOS app
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To run this in the iOS simulator, run:
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$ briefcase run iOS
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To run this in the Android simulator, run:
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$ briefcase run android
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Note that these builds have extensive requirements that must be installed -
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Xcode for iOS, and the Android SDKs for Android. These are multiple gigabyte
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downloads. Briefcase will detect when these tools aren't available, and either
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prompt you to download them, or perform a download for you. As a result, your
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first build may take up to 20 minutes to complete, depending on the speed of
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your conection.

‎pyscriptjs/examples/toga/freedom/base-wheel.zip

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‎pyscriptjs/examples/toga/freedom/fake-briefcase.sh

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#!/bin/sh
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mkdir -p ../server/static/wheels
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cd src
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unzip ../base-wheel.zip
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zip ../../server/static/wheels/freedom-0.0.1-py3-none-any.whl -r freedom*
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rm -rf freedom-0.0.1.dist-info

‎pyscriptjs/examples/toga/freedom/pyproject.toml

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[build-system]
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requires = ["briefcase"]
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[tool.briefcase]
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project_name = "Freedom Units"
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bundle = "org.beeware"
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version = "0.0.1"
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url = "https://beeware.org"
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license = "BSD license"
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author = 'Tiberius Yak'
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author_email = "tiberius@beeware.org"
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[tool.briefcase.app.freedom]
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formal_name = "Freedom Units"
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description = "A testing app"
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sources = ['src/freedom']
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requires = [
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'../server/static/wheels/toga_core-0.3.0.dev33-py3-none-any.whl',
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'../server/static/wheels/travertino-0.1.3-py3-none-any.whl',
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]
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[tool.briefcase.app.freedom.macOS]
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requires = [
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'git+https://github.com/beeware/toga.git#egg=toga-cocoa&subdirectory=src/cocoa',
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'std-nslog>=1.0.0',
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]
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[tool.briefcase.app.freedom.linux]
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requires = [
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'git+https://github.com/beeware/toga.git#egg=toga-gtk&subdirectory=src/gtk',
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]
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[tool.briefcase.app.freedom.windows]
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requires = [
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'git+https://github.com/beeware/toga.git#egg=toga-winforms&subdirectory=src/winforms',
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]
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# Mobile deployments
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[tool.briefcase.app.freedom.iOS]
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requires = [
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'git+https://github.com/beeware/toga.git#egg=toga-iOS&subdirectory=src/iOS',
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'std-nslog>=1.0.0',
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]
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[tool.briefcase.app.freedom.android]
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requires = [
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'git+https://github.com/beeware/toga.git#egg=toga-android&subdirectory=src/android',
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]

‎pyscriptjs/examples/toga/freedom/src/freedom/__init__.py

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‎pyscriptjs/examples/toga/freedom/src/freedom/__main__.py

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from freedom.app import main
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print("IN FREEDOM", main)
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if __name__ == '__main__':
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main().main_loop()

‎pyscriptjs/examples/toga/freedom/src/freedom/app.py

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import toga
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from toga.style.pack import LEFT, RIGHT, COLUMN, ROW, Pack
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class FreedomApp(toga.App):
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def calculate(self, widget):
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try:
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self.c_input.value = (float(self.f_input.value) - 32.0) * 5.0 / 9.0
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except ValueError:
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self.c_input.value = '???'
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def startup(self):
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self.main_window = toga.MainWindow(title=self.name)
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c_box = toga.Box()
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f_box = toga.Box()
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box = toga.Box()
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self.c_input = toga.TextInput(id="c_input", readonly=True)
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self.f_input = toga.TextInput(id="f_input")
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c_label = toga.Label('Celsius', style=Pack(text_align=LEFT))
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f_label = toga.Label('Fahrenheit', style=Pack(text_align=LEFT))
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join_label = toga.Label('is equivalent to', style=Pack(text_align=RIGHT))
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button = toga.Button('Calculate', id="calculate", on_press=self.calculate)
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f_box.add(self.f_input)
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f_box.add(f_label)
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c_box.add(join_label)
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c_box.add(self.c_input)
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c_box.add(c_label)
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box.add(f_box)
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box.add(c_box)
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box.add(button)
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box.style.update(direction=COLUMN, padding_top=10)
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f_box.style.update(direction=ROW, padding=5)
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c_box.style.update(direction=ROW, padding=5)
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self.c_input.style.update(flex=1)
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self.f_input.style.update(flex=1, padding_left=160)
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c_label.style.update(width=100, padding_left=10)
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f_label.style.update(width=100, padding_left=10)
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join_label.style.update(width=150, padding_right=10)
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button.style.update(padding=15, flex=1)
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self.main_window.content = box
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self.main_window.show()
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def main():
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return FreedomApp('Freedom Units', 'org.beeware.freedom')
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if __name__ == '__main__':
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main().main_loop()

‎pyscriptjs/examples/toga/requirements.txt

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setuptools
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wheel
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check-manifest
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briefcase
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flask==2.1.1
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server/static/wheels/toga_core-0.3.0.dev33-py3-none-any.whl
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server/static/wheels/toga_flask-0.3.0.dev33-py3-none-any.whl
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server/static/wheels/toga_web-0.3.0.dev33-py3-none-any.whl
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server/static/wheels/travertino-0.1.3-py3-none-any.whl

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