Printer demo python port

main.py

# autopep8: off
from datetime import timedelta, datetime
import os
import sys
sys.path.append(os.path.join(os.path.dirname(__file__), "..", "ui"))
import slint
from slint import Color, ListModel, Timer, TimerMode
from printerdemo_slint import MainWindow
# autopep8: on

main_window = MainWindow()

main_window.ink_levels = ListModel([
    {"color": Color("#0ff"), "level": 0.4},
    {"color": Color("#ff0"), "level": 0.2},
    {"color": Color("#f0f"), "level": 0.5},
    {"color": Color("#000"), "level": 0.8},
])


class PrinterQueueData:
    def __init__(self, printer_queue_global):
        self.printer_queue = ListModel(
            list(printer_queue_global.printer_queue))
        printer_queue_global.printer_queue = self.printer_queue
        printer_queue_global.start_job = self.push_job
        printer_queue_global.cancel_job = self.remove_job
        self.print_progress_timer = Timer()
        self.print_progress_timer.start(
            TimerMode.Repeated, timedelta(seconds=1), self.update_jobs)

    def push_job(self, title):
        self.printer_queue.append({
            "status": "waiting",
            "progress": 0,
            "title": title,
            "owner": "Me",
            "pages": 1,
            "size": "100kB",
            "submission_date": str(datetime.now()),
        })

    def remove_job(self, index):
        del self.printer_queue[index]

    def update_jobs(self):
        if len(self.printer_queue) <= 0:
            return
        top_item = self.printer_queue[0]
        top_item["progress"] += 1
        if top_item["progress"] >= 100:
            del self.printer_queue[0]
            if len(self.printer_queue) == 0:
                return
            top_item = self.printer_queue[0]
        self.printer_queue[0] = top_item


data = PrinterQueueData(main_window.PrinterQueue)

main_window.quit = lambda: sys.exit(0)

main_window.run()