gui_widgets.py

# gui_widgets.py

import tkinter as tk
from tkinter import ttk

class FormattedLabel(ttk.Label):
    """格式化标签控件,用于显示数值。"""

    def __init__(self, parent, textvariable, precision=1, **kwargs):
        self.var = textvariable
        self.precision = precision
        self.str_var = tk.StringVar()
        super().__init__(parent, textvariable=self.str_var, **kwargs)
        self.var.trace_add("write", self._update_text)
        self._update_text()

    def _update_text(self, *args):
        try:
            self.str_var.set(f"{self.var.get():.{self.precision}f}")
        except (ValueError, tk.TclError):
            self.str_var.set("")


class ScrollableFrame(ttk.Frame):
    """可滚动的Frame控件。"""

    def __init__(self, container, *args, **kwargs):
        super().__init__(container, *args, **kwargs)

        self.canvas = tk.Canvas(self)
        scrollbar = ttk.Scrollbar(self, orient="vertical", command=self.canvas.yview)
        self.content_frame = ttk.Frame(self.canvas)

        self.content_frame.bind(
            "<Configure>",
            lambda e: self.canvas.configure(scrollregion=self.canvas.bbox("all"))
        )

        self.canvas.create_window((0, 0), window=self.content_frame, anchor="nw")
        self.canvas.configure(yscrollcommand=scrollbar.set)

        self._bind_mouse_wheel_to_children(self)

        self.canvas.grid(row=0, column=0, sticky="nsew")
        scrollbar.grid(row=0, column=1, sticky="ns")
        self.grid_rowconfigure(0, weight=1)
        self.grid_columnconfigure(0, weight=1)

    def _on_mouse_wheel(self, event):
        self.canvas.yview_scroll(int(-1 * (event.delta / 120)), "units")

    def _bind_mouse_wheel_to_children(self, widget):
        widget.bind("<MouseWheel>", self._on_mouse_wheel)
        for child in widget.winfo_children():
            self._bind_mouse_wheel_to_children(child)