import tkinter as tk from tkinter import ttk, messagebox import urllib.request import json import threading from datetime import datetime class App067: """為替レートウィジェット""" # Frankfurter API (無料・登録不要) API_BASE = "https://api.frankfurter.app" CURRENCIES = { "JPY": "日本円", "USD": "米ドル", "EUR": "ユーロ", "GBP": "英ポンド", "CNY": "中国元", "KRW": "韓国ウォン", "AUD": "豪ドル", "CAD": "カナダドル", "CHF": "スイスフラン", "HKD": "香港ドル", "SGD": "シンガポールドル", "THB": "タイバーツ", } def __init__(self, root): self.root = root self.root.title("為替レートウィジェット") self.root.geometry("860x580") self.root.configure(bg="#0d1117") self._rates = {} self._base = "JPY" self._last_updated = "" self._auto_refresh = False self._refresh_id = None self._build_ui() self._fetch_rates() def _build_ui(self): header = tk.Frame(self.root, bg="#161b22", pady=6) header.pack(fill=tk.X) tk.Label(header, text="💱 為替レートウィジェット", font=("Noto Sans JP", 12, "bold"), bg="#161b22", fg="#f0f6fc").pack(side=tk.LEFT, padx=12) tk.Label(header, text="Frankfurter API", bg="#161b22", fg="#8b949e", font=("Arial", 8)).pack(side=tk.LEFT) # 基準通貨 ctrl_f = tk.Frame(self.root, bg="#0d1117", pady=6) ctrl_f.pack(fill=tk.X, padx=8) tk.Label(ctrl_f, text="基準通貨:", bg="#0d1117", fg="#c9d1d9", font=("Arial", 9)).pack(side=tk.LEFT) self.base_var = tk.StringVar(value="JPY") ttk.Combobox(ctrl_f, textvariable=self.base_var, values=list(self.CURRENCIES.keys()), state="readonly", width=6).pack(side=tk.LEFT, padx=4) ttk.Button(ctrl_f, text="🔄 レート更新", command=self._fetch_rates).pack(side=tk.LEFT, padx=4) self.auto_var = tk.BooleanVar(value=False) tk.Checkbutton(ctrl_f, text="1分おきに自動更新", variable=self.auto_var, bg="#0d1117", fg="#c9d1d9", selectcolor="#161b22", activebackground="#0d1117", command=self._toggle_auto).pack(side=tk.LEFT, padx=8) self.updated_lbl = tk.Label(ctrl_f, text="", bg="#0d1117", fg="#8b949e", font=("Arial", 8)) self.updated_lbl.pack(side=tk.RIGHT, padx=8) # メインエリア main = tk.Frame(self.root, bg="#0d1117") main.pack(fill=tk.BOTH, expand=True, padx=8, pady=4) # 左: レートテーブル left = tk.Frame(main, bg="#0d1117") left.pack(side=tk.LEFT, fill=tk.BOTH, expand=True) tk.Label(left, text="レート一覧", bg="#0d1117", fg="#8b949e", font=("Arial", 9)).pack(anchor="w") cols = ("code", "name", "rate", "inv_rate", "change") self.rate_tree = ttk.Treeview(left, columns=cols, show="headings", selectmode="browse") self.rate_tree.heading("code", text="通貨コード") self.rate_tree.heading("name", text="通貨名") self.rate_tree.heading("rate", text=f"1 JPY =") self.rate_tree.heading("inv_rate", text="逆レート") self.rate_tree.heading("change", text="前日比") self.rate_tree.column("code", width=80, anchor="center") self.rate_tree.column("name", width=120, anchor="w") self.rate_tree.column("rate", width=110, anchor="e") self.rate_tree.column("inv_rate", width=110, anchor="e") self.rate_tree.column("change", width=80, anchor="e") rsb = ttk.Scrollbar(left, command=self.rate_tree.yview) self.rate_tree.configure(yscrollcommand=rsb.set) rsb.pack(side=tk.RIGHT, fill=tk.Y) self.rate_tree.pack(fill=tk.BOTH, expand=True) # 右: 換算電卓 right = tk.Frame(main, bg="#161b22", width=280, padx=12, pady=10) right.pack(side=tk.LEFT, fill=tk.Y, padx=(8, 0)) right.pack_propagate(False) tk.Label(right, text="換算電卓", bg="#161b22", fg="#f0f6fc", font=("Arial", 11, "bold")).pack(anchor="w") tk.Label(right, text="金額:", bg="#161b22", fg="#c9d1d9", font=("Arial", 9)).pack(anchor="w", pady=(8, 2)) self.amount_var = tk.StringVar(value="100") ttk.Entry(right, textvariable=self.amount_var, width=20).pack(fill=tk.X) self.amount_var.trace_add("write", lambda *a: self._calc()) tk.Label(right, text="元通貨:", bg="#161b22", fg="#c9d1d9", font=("Arial", 9)).pack(anchor="w", pady=(6, 2)) self.from_var = tk.StringVar(value="JPY") ttk.Combobox(right, textvariable=self.from_var, values=list(self.CURRENCIES.keys()), state="readonly", width=18).pack(fill=tk.X) self.from_var.trace_add("write", lambda *a: self._calc()) tk.Label(right, text="換算先:", bg="#161b22", fg="#c9d1d9", font=("Arial", 9)).pack(anchor="w", pady=(6, 2)) self.to_var = tk.StringVar(value="USD") ttk.Combobox(right, textvariable=self.to_var, values=list(self.CURRENCIES.keys()), state="readonly", width=18).pack(fill=tk.X) self.to_var.trace_add("write", lambda *a: self._calc()) self.result_lbl = tk.Label(right, text="= ...", bg="#161b22", fg="#4fc3f7", font=("Arial", 18, "bold"), anchor="w", wraplength=240) self.result_lbl.pack(anchor="w", pady=12) ttk.Separator(right, orient=tk.HORIZONTAL).pack(fill=tk.X, pady=4) tk.Label(right, text="よく使う換算:", bg="#161b22", fg="#8b949e", font=("Arial", 9)).pack(anchor="w") self.quick_frame = tk.Frame(right, bg="#161b22") self.quick_frame.pack(fill=tk.X) self.progress = ttk.Progressbar(self.root, mode="indeterminate") self.progress.pack(fill=tk.X, padx=8) self.status_var = tk.StringVar(value="レートを取得中...") tk.Label(self.root, textvariable=self.status_var, bg="#21262d", fg="#8b949e", font=("Arial", 9), anchor="w", padx=8).pack(fill=tk.X, side=tk.BOTTOM) def _fetch_rates(self): base = self.base_var.get() self._base = base self.progress.start() threading.Thread(target=self._do_fetch, args=(base,), daemon=True).start() def _do_fetch(self, base): try: url = f"{self.API_BASE}/latest?base={base}" req = urllib.request.Request( url, headers={"User-Agent": "Mozilla/5.0"}) with urllib.request.urlopen(req, timeout=10) as resp: data = json.loads(resp.read().decode("utf-8")) rates = data.get("rates", {}) rates[base] = 1.0 date_str = data.get("date", "") self.root.after(0, self._show_rates, rates, base, date_str) except Exception as e: self.root.after(0, self.status_var.set, f"エラー: {e}") self.root.after(0, self.progress.stop) def _show_rates(self, rates, base, date_str): self.progress.stop() self._rates = rates self._last_updated = date_str self.updated_lbl.config(text=f"更新: {date_str}") self.rate_tree.heading("rate", text=f"1 {base} =") self.rate_tree.delete(*self.rate_tree.get_children()) for code, name in self.CURRENCIES.items(): if code == base: continue r = rates.get(code) if r is None: continue inv = 1 / r if r else 0 self.rate_tree.insert("", tk.END, values=(code, name, f"{r:.4f} {code}", f"{inv:.4f} {base}", "")) self.status_var.set(f"更新完了 ({date_str}) 基準: {base}") self._calc() self._update_quick() def _calc(self): if not self._rates: return try: amount = float(self.amount_var.get()) except ValueError: self.result_lbl.config(text="= (無効な金額)") return frm = self.from_var.get() to = self.to_var.get() if frm == to: self.result_lbl.config(text=f"= {amount:.2f} {to}") return try: frm_rate = self._rates.get(frm, 1.0) if frm != self._base else 1.0 to_rate = self._rates.get(to, 1.0) if to != self._base else 1.0 # 基準通貨経由で換算 base_amount = amount / frm_rate result = base_amount * to_rate self.result_lbl.config(text=f"= {result:,.2f} {to}") except Exception: self.result_lbl.config(text="= エラー") def _update_quick(self): for w in self.quick_frame.winfo_children(): w.destroy() pairs = [("USD", "JPY"), ("EUR", "JPY"), ("GBP", "JPY")] for frm, to in pairs: r_frm = self._rates.get(frm, 1) r_to = self._rates.get(to, 1) if frm == self._base: rate = r_to elif to == self._base: rate = 1 / r_frm if r_frm else 0 else: rate = r_to / r_frm if r_frm else 0 tk.Label(self.quick_frame, text=f"1 {frm} = {rate:.2f} {to}", bg="#161b22", fg="#c9d1d9", font=("Courier New", 9)).pack(anchor="w") def _toggle_auto(self): if self.auto_var.get(): self._schedule_auto() else: if self._refresh_id: self.root.after_cancel(self._refresh_id) self._refresh_id = None def _schedule_auto(self): self._fetch_rates() self._refresh_id = self.root.after(60000, self._schedule_auto) if __name__ == "__main__": root = tk.Tk() app = App067(root) root.mainloop()