70 lines
2.4 KiB
Python
70 lines
2.4 KiB
Python
import json
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import os
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from PyQt6.QtCore import QObject, pyqtSignal, QFileSystemWatcher
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class ConfigParse(QObject):
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"""配置文件解析与自动重载"""
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config_changed = pyqtSignal(object) # 发送自身实例
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def __init__(self, config_file="config.json"):
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super().__init__()
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self.config_file = config_file
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self.api_url = None
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self.api_key = None
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self.gcode_dir = None
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self.move_axis_area = None
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self.move_max_speed = None
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self.config = self._load_config()
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self._parse_config()
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# 使用 QFileSystemWatcher 监视文件变化
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self._watcher = QFileSystemWatcher(self)
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self._watch_path = os.path.abspath(self.config_file)
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self._last_mtime = 0
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self._start_watching()
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def _start_watching(self):
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"""启动文件监视"""
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if not os.path.isfile(self._watch_path):
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return
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self._last_mtime = os.path.getmtime(self._watch_path)
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if self._watch_path not in self._watcher.files():
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self._watcher.addPath(self._watch_path)
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self._watcher.fileChanged.connect(self._on_file_changed)
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def _on_file_changed(self, path):
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"""文件变化时重新加载（防止保存中多次触发，用 mtime 去抖动）"""
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try:
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mtime = os.path.getmtime(path)
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if mtime <= self._last_mtime:
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return
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self._last_mtime = mtime
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except OSError:
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return
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old_config = self.config
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new_config = self._load_config()
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if new_config == old_config:
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return
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self.config = new_config
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self._parse_config()
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self.config_changed.emit(self)
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def _load_config(self):
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try:
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with open(self.config_file, "r") as f:
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return json.load(f)
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except Exception as e:
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print(f"Error loading config: {e}")
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return {}
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def _parse_config(self):
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self.api_url = self.config.get("api_url", None)
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self.api_key = self.config.get("api_key", None)
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self.gcode_dir = self.config.get("gcode_dir", None)
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self.move_axis_area = self.config.get("move_axis_area", None)
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self.move_max_speed = self.config.get("move_max_speed", {"x": 3000, "y": 3000, "z": 200})
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self.home_positions = self.config.get("home_positions", {"x": 134, "y": 123, "z": 10})
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self.move_max_speed = self.config.get("move_max_speed", None) |