async def query_windows(display: X.Display, window_factory, windows, view): """Signal handler for SIGUSR1. Searches for added and removed tmux clients. Added clients: additional windows will be mapped Removed clients: existing windows will be destroyed """ parent_window_infos = xutil.get_parent_window_infos(display) view.offset = tmux_util.get_offset() map_parent_window_id_info = { info.window_id: info for info in parent_window_infos } parent_window_ids = map_parent_window_id_info.keys() map_current_windows = {window.parent_id: window for window in windows} current_window_ids = map_current_windows.keys() diff_window_ids = parent_window_ids ^ current_window_ids added_window_ids = diff_window_ids & parent_window_ids removed_window_ids = diff_window_ids & current_window_ids draw = added_window_ids or removed_window_ids if added_window_ids: windows += window_factory.create( *[map_parent_window_id_info.get(wid) for wid in added_window_ids]) if removed_window_ids: windows -= [map_current_windows.get(wid) for wid in removed_window_ids] if draw: windows.draw()
def main(options): if options['--silent']: try: outfile = os.open(os.devnull, os.O_WRONLY) os.close(sys.stderr.fileno()) os.dup2(outfile, sys.stderr.fileno()) finally: os.close(outfile) display = xutil.get_display() screen = display.screen() window_infos = xutil.get_parent_window_infos() loop = asyncio.get_event_loop() executor = thread.DaemonThreadPoolExecutor(max_workers=2) parser_object = (parser.ParserOption(options['--parser']) .parser_class()) image_loader = (loading.ImageLoaderOption(options['--loader']) .loader_class()) error_handler = error_processor_factory(parser_object) view = View() tools = Tools(image_loader, parser_object, error_handler) window_factory = ui.OverlayWindow.Factory(display, view) windows = batch.BatchList(window_factory.create(*window_infos)) image_loader.register_error_handler(error_handler) view.screen_width = screen.width_in_pixels view.screen_height = screen.height_in_pixels if tmux_util.is_used(): atexit.register(setup_tmux_hooks()) view.offset = tmux_util.get_offset() with windows, image_loader: loop.set_default_executor(executor) for sig in (signal.SIGINT, signal.SIGTERM): loop.add_signal_handler( sig, shutdown_factory(loop)) loop.add_signal_handler( signal.SIGUSR1, lambda: asyncio.ensure_future(query_windows( window_factory, windows, view))) loop.add_signal_handler( signal.SIGWINCH, lambda: asyncio.ensure_future( reset_terminal_info(windows))) asyncio.ensure_future(process_xevents(loop, display, windows)) asyncio.ensure_future(process_commands( loop, shutdown_factory(loop), windows, view, tools)) try: loop.run_forever() finally: loop.close() executor.shutdown(wait=False)
def main_layer(options): display = xutil.get_display() window_infos = xutil.get_parent_window_infos() loop = asyncio.get_event_loop() executor = thread.DaemonThreadPoolExecutor(max_workers=2) parser_class = parser.ParserOption(options['--parser']).parser_class view = ui.View() window_factory = ui.OverlayWindow.Factory(display, view) windows = batch.BatchList(window_factory.create(*window_infos)) if tmux_util.is_used(): atexit.register(setup_tmux_hooks()) view.offset = tmux_util.get_offset() if options['--silent']: sys.stderr = open('/dev/null', 'w') with windows: loop.set_default_executor(executor) for sig in (signal.SIGINT, signal.SIGTERM): loop.add_signal_handler( sig, shutdown_factory(loop)) loop.add_signal_handler( signal.SIGUSR1, lambda: asyncio.ensure_future(query_windows( window_factory, windows, view))) asyncio.ensure_future(main_xevents(loop, display, windows)) asyncio.ensure_future(main_commands( loop, shutdown_factory(loop), parser_class(), windows, view)) try: loop.run_forever() finally: loop.close() executor.shutdown(wait=False)