a2d29ed829
- Upgraded to Lightweight Charts v4.0.1. - Added a ‘hover’ item to the returning dictionary from subscribe_click. - Markers and SubCharts no longer use a UUID for identification, but an 8 character string.
92 lines
3.0 KiB
Python
92 lines
3.0 KiB
Python
import webview
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import multiprocessing as mp
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from lightweight_charts.js import LWC
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class PyWV:
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def __init__(self, q, exit, loaded, html, js_api, width, height, x, y, on_top, debug):
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self.queue = q
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self.exit = exit
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self.loaded = loaded
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self.debug = debug
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self.js_api = js_api
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self.webview = webview.create_window('', html=html, on_top=on_top, js_api=js_api,
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width=width, height=height, x=x, y=y)
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self.webview.events.loaded += self.on_js_load
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self.loop()
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def loop(self):
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while 1:
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arg = self.queue.get()
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if arg in ('start', 'show', 'hide', 'exit'):
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webview.start(debug=self.debug) if arg == 'start' else getattr(self.webview, arg)()
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self.exit.set() if arg in ('start', 'exit') else None
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elif arg == 'subscribe':
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func, c_id = (self.queue.get() for _ in range(2))
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self.js_api.click_funcs[str(c_id)] = func
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else:
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try:
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self.webview.evaluate_js(arg)
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except KeyError:
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return
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def on_js_load(self):
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self.loaded.set(), self.loop()
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class Chart(LWC):
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def __init__(self, volume_enabled: bool = True, width: int = 800, height: int = 600, x: int = None, y: int = None,
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on_top: bool = False, debug: bool = False,
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inner_width: float = 1.0, inner_height: float = 1.0):
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super().__init__(volume_enabled, inner_width, inner_height)
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self._js_api_code = 'pywebview.api.onClick'
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self._q = mp.Queue()
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self._script_func = self._q.put
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self._exit = mp.Event()
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self._loaded = mp.Event()
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self._process = mp.Process(target=PyWV, args=(self._q, self._exit, self._loaded, self._html, self._js_api,
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width, height, x, y, on_top, debug,), daemon=True)
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self._process.start()
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self._create_chart()
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def show(self, block: bool = False):
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"""
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Shows the chart window.\n
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:param block: blocks execution until the chart is closed.
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"""
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if not self.loaded:
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self._q.put('start')
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self._loaded.wait()
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self._on_js_load()
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else:
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self._q.put('show')
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if block:
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try:
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self._exit.wait()
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except KeyboardInterrupt:
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return
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self._exit.clear()
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def hide(self):
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"""
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Hides the chart window.\n
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"""
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self._q.put('hide')
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def exit(self):
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"""
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Exits and destroys the chart window.\n
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"""
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self._q.put('exit')
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self._exit.wait()
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self._process.terminate()
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del self
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def subscribe_click(self, function: object):
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self._q.put('subscribe')
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self._q.put(function)
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self._q.put(self.id)
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super().subscribe_click(function)
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