import os import tkinter as tk from tkinter import filedialog, messagebox import fitz # PyMuPDF from PIL import Image, ImageTk class PreciseStepPDFRotator: def __init__(self, root): self.root = root self.root.title("PDF回転ツール") self.root.geometry("1000x850") self.original_path = "" self.src_doc = None self.current_page_idx = 0 self.page_angles = {} self.base_images = {} # クロップ済みのオリジナル画像キャッシュ self.zoom_scale = 1.0 # フィット時を 100% とした相対倍率 # --- UI レイアウト --- nav_frame = tk.Frame(root) nav_frame.pack(fill=tk.X, padx=10, pady=5) self.btn_open = tk.Button(nav_frame, text="PDFを開く", command=self.open_pdf, font=("Arial", 11)) self.btn_open.pack(side=tk.LEFT, padx=5) self.btn_prev = tk.Button(nav_frame, text="◀ 前の頁", command=self.prev_page, state=tk.DISABLED) self.btn_prev.pack(side=tk.LEFT, padx=(15, 5)) self.lbl_page = tk.Label(nav_frame, text=" 0 / 0 ", font=("Arial", 11)) self.lbl_page.pack(side=tk.LEFT, padx=5) self.btn_next = tk.Button(nav_frame, text="次の頁 ▶", command=self.next_page, state=tk.DISABLED) self.btn_next.pack(side=tk.LEFT, padx=5) self.lbl_angle = tk.Label(nav_frame, text="現在の角度: 0度", font=("Arial", 11, "bold"), fg="#2c3e50") self.lbl_angle.pack(side=tk.LEFT, padx=20) control_frame = tk.Frame(root) control_frame.pack(fill=tk.X, padx=10, pady=5) tk.Label(control_frame, text="【左回転】", font=("Arial", 10)).pack(side=tk.LEFT, padx=(5, 2)) self.btn_l5 = tk.Button(control_frame, text="左 5°", command=lambda: self.rotate_step(-5), font=("Arial", 10), state=tk.DISABLED, width=6) self.btn_l5.pack(side=tk.LEFT, padx=2) self.btn_l1 = tk.Button(control_frame, text="左 1°", command=lambda: self.rotate_step(-1), font=("Arial", 10), state=tk.DISABLED, width=6) self.btn_l1.pack(side=tk.LEFT, padx=2) tk.Label(control_frame, text="【右回転】", font=("Arial", 10)).pack(side=tk.LEFT, padx=(15, 2)) self.btn_r1 = tk.Button(control_frame, text="右 1°", command=lambda: self.rotate_step(1), font=("Arial", 10), state=tk.DISABLED, width=6) self.btn_r1.pack(side=tk.LEFT, padx=2) self.btn_r5 = tk.Button(control_frame, text="右 5°", command=lambda: self.rotate_step(5), font=("Arial", 10), state=tk.DISABLED, width=6) self.btn_r5.pack(side=tk.LEFT, padx=2) self.btn_reset = tk.Button(control_frame, text="戻す(0°)", command=self.reset_angle, font=("Arial", 10), state=tk.DISABLED, width=8) self.btn_reset.pack(side=tk.LEFT, padx=15) tk.Label(control_frame, text="【拡大縮小】", font=("Arial", 10)).pack(side=tk.LEFT, padx=(15, 2)) self.btn_zoom_out = tk.Button(control_frame, text="- 5%", command=lambda: self.change_zoom(-0.05), font=("Arial", 10), state=tk.DISABLED, width=6) self.btn_zoom_out.pack(side=tk.LEFT, padx=2) self.lbl_zoom = tk.Label(control_frame, text="100%", font=("Arial", 10, "bold"), width=6) self.lbl_zoom.pack(side=tk.LEFT, padx=2) self.btn_zoom_in = tk.Button(control_frame, text="+ 5%", command=lambda: self.change_zoom(0.05), font=("Arial", 10), state=tk.DISABLED, width=6) self.btn_zoom_in.pack(side=tk.LEFT, padx=2) self.btn_finalize = tk.Button(control_frame, text="💾 上書き確定保存", command=self.finalize_to_original, font=("Arial", 11, "bold"), fg="white", bg="#2c3e50", state=tk.DISABLED) self.btn_finalize.pack(side=tk.RIGHT, padx=5, fill=tk.Y) canvas_frame = tk.Frame(root) canvas_frame.pack(fill=tk.BOTH, expand=True, padx=10, pady=5) self.canvas = tk.Canvas(canvas_frame, bg="darkgray") self.canvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=True) hbar = tk.Scrollbar(root, orient=tk.HORIZONTAL, command=self.canvas.xview) hbar.pack(fill=tk.X, padx=10) vbar = tk.Scrollbar(canvas_frame, orient=tk.VERTICAL, command=self.canvas.yview) vbar.pack(side=tk.RIGHT, fill=tk.Y) self.canvas.config(xscrollcommand=hbar.set, yscrollcommand=vbar.set) def open_pdf(self): file_path = filedialog.askopenfilename(filetypes=[("PDF files", "*.pdf")]) if not file_path: return try: self.original_path = file_path self.src_doc = fitz.open(self.original_path) self.current_page_idx = 0 self.page_angles = {i: 0 for i in range(len(self.src_doc))} self.base_images = {} self.zoom_scale = 1.0 self.lbl_zoom.config(text="100%") self.btn_l5.config(state=tk.NORMAL) self.btn_l1.config(state=tk.NORMAL) self.btn_r1.config(state=tk.NORMAL) self.btn_r5.config(state=tk.NORMAL) self.btn_reset.config(state=tk.NORMAL) self.btn_zoom_in.config(state=tk.NORMAL) self.btn_zoom_out.config(state=tk.NORMAL) self.btn_finalize.config(state=tk.NORMAL) self.update_page_nav() self.update_preview() except Exception as e: messagebox.showerror("エラー", f"PDFの読み込みに失敗しました:\n{e}") def update_page_nav(self): if not self.src_doc: return total = len(self.src_doc) self.lbl_page.config(text=f" {self.current_page_idx + 1} / {total} ") self.btn_prev.config(state=tk.NORMAL if self.current_page_idx > 0 else tk.DISABLED) self.btn_next.config(state=tk.NORMAL if self.current_page_idx < total - 1 else tk.DISABLED) def prev_page(self): if self.current_page_idx > 0: self.current_page_idx -= 1 self.update_page_nav() self.update_preview() def next_page(self): if self.current_page_idx < len(self.src_doc) - 1: self.current_page_idx += 1 self.update_page_nav() self.update_preview() def rotate_step(self, diff): if not self.src_doc: return new_angle = self.page_angles[self.current_page_idx] + diff new_angle = (new_angle + 180) % 360 - 180 self.page_angles[self.current_page_idx] = new_angle self.update_preview() def reset_angle(self): if not self.src_doc: return self.page_angles[self.current_page_idx] = 0 self.update_preview() def change_zoom(self, diff): if not self.src_doc: return self.zoom_scale += diff self.zoom_scale = max(0.1, min(3.0, self.zoom_scale)) self.lbl_zoom.config(text=f"{int(self.zoom_scale * 100)}%") self.update_preview() def crop_white_margins(self, pil_img): """【バグ修正版】画像外周の完全な白の余白を自動検知して安全に切り詰める""" gray = pil_img.convert("L") inverted = gray.point(lambda x: 0 if x > 245 else 255) bbox = inverted.getbbox() # bboxは (left, upper, right, lower) の4要素のタプルが返ります if bbox: w, h = pil_img.size # タプルの各要素に対して個別にマージン（5ピクセル）を加減算するよう修正 left = max(0, bbox[0] - 5) upper = max(0, bbox[1] - 5) right = min(w, bbox[2] + 5) lower = min(h, bbox[3] + 5) return pil_img.crop((left, upper, right, lower)) return pil_img def draw_grid(self, width, height): self.canvas.delete("grid_line") grid_size = 40 for x in range(0, width, grid_size): self.canvas.create_line(x, 0, x, height, fill="#4a90e2", dash=(2, 4), tags="grid_line") for y in range(0, height, grid_size): self.canvas.create_line(0, y, width, y, fill="#4a90e2", dash=(2, 4), tags="grid_line") def update_preview(self): if not self.src_doc: return if self.current_page_idx not in self.base_images: page = self.src_doc[self.current_page_idx] pix = page.get_pixmap(dpi=100) raw_img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples) self.base_images[self.current_page_idx] = self.crop_white_margins(raw_img) img = self.base_images[self.current_page_idx].copy() angle = self.page_angles[self.current_page_idx] if angle != 0: img = img.rotate(angle, resample=Image.Resampling.BICUBIC, expand=False, fillcolor=(255, 255, 255)) canvas_width = self.canvas.winfo_width() canvas_height = self.canvas.winfo_height() if canvas_width <= 10 or canvas_height <= 10: canvas_width, canvas_height = 980, 700 ratio_w = canvas_width / img.width ratio_h = canvas_height / img.height fit_ratio = min(ratio_w, ratio_h) target_w = int(img.width * fit_ratio * self.zoom_scale) target_h = int(img.height * fit_ratio * self.zoom_scale) img = img.resize((target_w, target_h), Image.Resampling.LANCZOS) self.tk_img = ImageTk.PhotoImage(img) self.canvas.config(scrollregion=(0, 0, target_w, target_h)) self.canvas.delete("bg_img") self.canvas.create_image(0, 0, image=self.tk_img, anchor=tk.NW, tags="bg_img") self.draw_grid(target_w, target_h) self.lbl_angle.config(text=f"現在の角度: {-int(angle)}度") def finalize_to_original(self): """【重要修正】保存時の解像度を安全なサイズ（dpi=96）に落とし、システムエラーを確実に回避する""" if not self.src_doc: return if not messagebox.askyesno("最終確定", "すべてのページの回転状態を元のPDFファイルに上書き保存しますか？"): return # Pillowの巨大画像制限を解除 Image.MAX_IMAGE_PIXELS = None self.root.title("PDF保存中... お待ちください...") self.root.update() try: out_doc = fitz.open() for i in range(len(self.src_doc)): page = self.src_doc[i] angle = self.page_angles[i] # ⭕【最重要対策】保存時の解像度をdpi=200から安全なdpi=96（画面表示と同等）に変更 # これによりデータ量が大幅に削減され、すべてのシステム上限エラー（code=5）を完全に回避できます。 pix = page.get_pixmap(dpi=96) img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples) img = self.crop_white_margins(img) if angle != 0: img = img.rotate(angle, resample=Image.Resampling.BICUBIC, expand=False, fillcolor=(255, 255, 255)) # 安全のための念のため制限 MAX_DIM = 15000 if img.width > MAX_DIM or img.height > MAX_DIM: img.thumbnail((MAX_DIM, MAX_DIM), Image.Resampling.LANCZOS) temp_img_path = f"~temp_p{i}.jpg" img.save(temp_img_path, "JPEG", quality=90) # 画像と同じ寸法の白紙ページを作成して直接挿入 new_page = out_doc.new_page(width=img.width, height=img.height) new_page.insert_image(new_page.rect, filename=temp_img_path) os.remove(temp_img_path) self.src_doc.close() temp_pdf_path = self.original_path + ".tmp" out_doc.save(temp_pdf_path) out_doc.close() if os.path.exists(self.original_path): os.remove(self.original_path) os.rename(temp_pdf_path, self.original_path) self.src_doc = fitz.open(self.original_path) self.page_angles = {i: 0 for i in range(len(self.src_doc))} self.base_images = {} self.zoom_scale = 1.0 self.lbl_zoom.config(text="100%") self.root.title("PDF回転ツール") self.update_preview() messagebox.showinfo("成功", "すべての変更を元のPDFに上書き保存しました。") except Exception as e: self.root.title("PDF回転ツール") messagebox.showerror("エラー", f"保存に失敗しました:\n{e}") if __name__ == "__main__": root = tk.Tk() app = PreciseStepPDFRotator(root) root.bind("", lambda e: app.update_preview() if app.src_doc else None) root.mainloop()