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pdf_split_tab.py
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import os
import threading
from pathlib import Path
import tkinter as tk
from tkinter import ttk, filedialog, messagebox
import pypdfium2 as pdfium
import utils
from styles import COLORS, FONTS, create_drop_zone
class PDFSplitTab:
def __init__(self, parent):
# Create frame
self.frame = ttk.Frame(parent)
self.parent = parent
# Variables
self.pdf_path = tk.StringVar()
self.output_dir = tk.StringVar()
self.start_page = tk.IntVar(value=1)
self.end_page = tk.IntVar(value=1)
self.split_mode = tk.StringVar(value="range") # "range", "single", "extract"
self.total_pages = 0
self.single_pages = tk.StringVar(value="") # comma-separated page numbers
self.page_interval = tk.IntVar(value=1) # For splitting by intervals
self.progress_var = tk.DoubleVar(value=0.0)
self.status_var = tk.StringVar(value="Ready")
self.conversion_canceled = False
self._pages_to_extract = []
# Create UI elements
self.create_file_frame()
self.create_options_frame()
utils.create_progress_frame(self.frame, self.progress_var, self.status_var)
utils.create_buttons_frame(
self.frame,
self.start_split,
self.cancel_split,
self.open_output_folder,
"Split PDF"
)
# Set default output directory to user's Documents folder
default_output = os.path.join(str(Path.home()), "Documents")
self.output_dir.set(default_output)
def create_file_frame(self):
file_frame = ttk.LabelFrame(self.frame, text="PDF Selection", padding=10)
file_frame.pack(fill="x", expand=False, padx=10, pady=5)
# PDF File selection
ttk.Label(file_frame, text="PDF File:").grid(row=0, column=0, sticky="w", padx=5, pady=5)
ttk.Entry(file_frame, textvariable=self.pdf_path, width=50).grid(row=0, column=1, sticky="ew", padx=5, pady=5)
ttk.Button(file_frame, text="Browse...", command=self.browse_pdf).grid(row=0, column=2, sticky="e", padx=5, pady=5)
# Output directory selection
ttk.Label(file_frame, text="Output Directory:").grid(row=1, column=0, sticky="w", padx=5, pady=5)
ttk.Entry(file_frame, textvariable=self.output_dir, width=50).grid(row=1, column=1, sticky="ew", padx=5, pady=5)
ttk.Button(file_frame, text="Browse...", command=self.browse_output_dir).grid(row=1, column=2, sticky="e", padx=5, pady=5)
# Page count button
ttk.Button(file_frame, text="Get Page Count", command=self.get_page_count).grid(row=2, column=0, sticky="w", padx=5, pady=5)
# Total pages display
self.pages_label = ttk.Label(file_frame, text="Total Pages: 0")
self.pages_label.grid(row=2, column=1, sticky="w", padx=5, pady=5)
# Make column 1 expand
file_frame.columnconfigure(1, weight=1)
def create_options_frame(self):
options_frame = ttk.LabelFrame(self.frame, text="Split Options", padding=10)
options_frame.pack(fill="x", expand=False, padx=10, pady=5)
# Split mode selection
ttk.Label(options_frame, text="Split Mode:").grid(row=0, column=0, sticky="w", padx=5, pady=5)
mode_frame = ttk.Frame(options_frame)
mode_frame.grid(row=0, column=1, columnspan=3, sticky="w", padx=5, pady=5)
self.mode_range = ttk.Radiobutton(mode_frame, text="Page Range", variable=self.split_mode, value="range", command=self.toggle_split_mode)
self.mode_range.pack(side="left", padx=5)
self.mode_single = ttk.Radiobutton(mode_frame, text="Single Pages", variable=self.split_mode, value="single", command=self.toggle_split_mode)
self.mode_single.pack(side="left", padx=5)
self.mode_extract = ttk.Radiobutton(mode_frame, text="Extract Every N Pages", variable=self.split_mode, value="extract", command=self.toggle_split_mode)
self.mode_extract.pack(side="left", padx=5)
# Page range options
self.range_frame = ttk.Frame(options_frame)
self.range_frame.grid(row=1, column=0, columnspan=4, sticky="w", padx=5, pady=5)
ttk.Label(self.range_frame, text="Start Page:").pack(side="left", padx=5)
ttk.Spinbox(self.range_frame, from_=1, to=9999, textvariable=self.start_page, width=10).pack(side="left", padx=5)
ttk.Label(self.range_frame, text="End Page:").pack(side="left", padx=5)
ttk.Spinbox(self.range_frame, from_=1, to=9999, textvariable=self.end_page, width=10).pack(side="left", padx=5)
# Single pages options
self.single_frame = ttk.Frame(options_frame)
self.single_frame.grid(row=2, column=0, columnspan=4, sticky="w", padx=5, pady=5)
ttk.Label(self.single_frame, text="Page Numbers:").pack(side="left", padx=5)
ttk.Entry(self.single_frame, textvariable=self.single_pages, width=40).pack(side="left", padx=5, fill="x", expand=True)
ttk.Label(self.single_frame, text="(leave empty for all pages, or e.g. 1,3,5-7)").pack(side="left", padx=5)
# Extract every N pages options
self.extract_frame = ttk.Frame(options_frame)
self.extract_frame.grid(row=3, column=0, columnspan=4, sticky="w", padx=5, pady=5)
ttk.Label(self.extract_frame, text="Extract every").pack(side="left", padx=5)
ttk.Spinbox(self.extract_frame, from_=1, to=100, textvariable=self.page_interval, width=5).pack(side="left", padx=5)
ttk.Label(self.extract_frame, text="page(s)").pack(side="left", padx=5)
# Hide single and extract frames initially
self.single_frame.grid_remove()
self.extract_frame.grid_remove()
def toggle_split_mode(self):
"""Show/hide option frames based on selected split mode"""
mode = self.split_mode.get()
if mode == "range":
self.range_frame.grid()
self.single_frame.grid_remove()
self.extract_frame.grid_remove()
elif mode == "single":
self.range_frame.grid_remove()
self.single_frame.grid()
self.extract_frame.grid_remove()
elif mode == "extract":
self.range_frame.grid_remove()
self.single_frame.grid_remove()
self.extract_frame.grid()
def browse_pdf(self):
selected_file = filedialog.askopenfilename(
title="Select PDF File",
filetypes=[("PDF Files", "*.pdf"), ("All Files", "*.*")]
)
if selected_file:
self.pdf_path.set(selected_file)
self.status_var.set(f"Selected file: {os.path.basename(selected_file)}")
self.get_page_count()
def browse_output_dir(self):
selected_dir = filedialog.askdirectory(
title="Select Output Directory",
initialdir=self.output_dir.get() if self.output_dir.get() else os.getcwd()
)
if selected_dir:
self.output_dir.set(selected_dir)
def get_page_count(self):
if not self.pdf_path.get() or not os.path.isfile(self.pdf_path.get()):
messagebox.showerror("Error", "Please select a valid PDF file first.")
return
try:
self.status_var.set("Counting pages...")
# Put this in a thread to avoid freezing the UI
threading.Thread(target=self._get_page_count_thread).start()
except Exception as e:
messagebox.showerror("Error", f"Failed to get page count: {str(e)}")
self.status_var.set(f"Error: {str(e)}")
def _get_page_count_thread(self):
try:
pdf = pdfium.PdfDocument(self.pdf_path.get())
self.total_pages = len(pdf)
# Update UI in the main thread
self.frame.winfo_toplevel().after(0, self._update_page_count_ui)
except Exception as e:
error_msg = str(e)
self.frame.winfo_toplevel().after(0, lambda: messagebox.showerror("Error", f"Failed to get page count: {error_msg}"))
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set(f"Error: {error_msg}"))
def _update_page_count_ui(self):
self.end_page.set(self.total_pages)
self.pages_label.config(text=f"Total Pages: {self.total_pages}")
self.status_var.set(f"PDF has {self.total_pages} pages")
def start_split(self):
if not self.pdf_path.get() or not os.path.isfile(self.pdf_path.get()):
messagebox.showerror("Error", "Please select a valid PDF file.")
return
if not self.output_dir.get() or not os.path.isdir(self.output_dir.get()):
messagebox.showerror("Error", "Please select a valid output directory.")
return
# Validate options based on the selected mode
mode = self.split_mode.get()
if mode == "range":
if self.start_page.get() < 1 or self.start_page.get() > self.total_pages:
messagebox.showerror("Error", f"Start page must be between 1 and {self.total_pages}.")
return
if self.end_page.get() < self.start_page.get() or self.end_page.get() > self.total_pages:
messagebox.showerror("Error", f"End page must be between {self.start_page.get()} and {self.total_pages}.")
return
elif mode == "single":
# If page numbers are specified, validate them; otherwise split all pages
if self.single_pages.get().strip():
if not self._validate_page_numbers():
return
else:
# No specific pages — will split all pages into individual files
self._pages_to_extract = []
elif mode == "extract":
if self.page_interval.get() < 1:
messagebox.showerror("Error", "Page interval must be at least 1.")
return
# Disable controls during splitting
utils.set_controls_state(self.frame, tk.DISABLED)
# Start conversion in a separate thread
self.conversion_canceled = False
threading.Thread(target=self._split_thread).start()
def _validate_page_numbers(self):
"""Validate page numbers entered in the single pages mode"""
try:
page_specs = self.single_pages.get().split(',')
pages = []
for spec in page_specs:
spec = spec.strip()
if '-' in spec:
# Handle page range like "5-10"
start, end = map(int, spec.split('-'))
if start < 1 or end > self.total_pages or start > end:
messagebox.showerror("Error", f"Invalid page range: {spec}. Must be between 1 and {self.total_pages}.")
return False
pages.extend(range(start, end + 1))
else:
# Handle single page
page = int(spec)
if page < 1 or page > self.total_pages:
messagebox.showerror("Error", f"Invalid page number: {page}. Must be between 1 and {self.total_pages}.")
return False
pages.append(page)
# Store the validated page numbers
self._pages_to_extract = sorted(set(pages)) # Remove duplicates and sort
return True
except ValueError:
messagebox.showerror("Error", "Invalid page format. Use comma-separated numbers and ranges (e.g., 1,3,5-7).")
return False
def _split_thread(self):
try:
mode = self.split_mode.get()
if mode == "range":
self._split_by_range()
elif mode == "single":
self._split_single_pages()
elif mode == "extract":
self._split_by_interval()
except Exception as e:
error_msg = str(e)
self.frame.winfo_toplevel().after(0, lambda: messagebox.showerror("Error", f"Failed to split PDF: {error_msg}"))
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set(f"Error: {error_msg}"))
finally:
# Re-enable controls
self.frame.winfo_toplevel().after(0, lambda: utils.set_controls_state(self.frame, tk.NORMAL))
def _split_by_range(self):
"""Split PDF by page range"""
try:
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set("Splitting PDF by page range..."))
self.frame.winfo_toplevel().after(0, lambda: self.progress_var.set(0))
# Get source PDF filename without extension
pdf_basename = os.path.splitext(os.path.basename(self.pdf_path.get()))[0]
# Create output filename
start = self.start_page.get()
end = self.end_page.get()
output_filename = f"{pdf_basename}_pages_{start}-{end}.pdf"
output_path = os.path.join(self.output_dir.get(), output_filename)
# Open source PDF
source_pdf = pdfium.PdfDocument(self.pdf_path.get())
# Use PyPDF's split_page method, not import_page
# First, create a new empty document
output_pdf = pdfium.PdfDocument.new()
# Copy pages from source to output
for i, page_idx in enumerate(range(start-1, end)):
if self.conversion_canceled:
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set("Splitting canceled"))
return
# Update progress
progress_pct = ((i + 1) / (end - start + 1)) * 100
current_page = page_idx + 1
self.frame.winfo_toplevel().after(0, lambda p=progress_pct: self.progress_var.set(p))
self.frame.winfo_toplevel().after(0, lambda p=current_page:
self.status_var.set(f"Processing page {p}..."))
output_pdf.import_pages(source_pdf, [page_idx])
# Save the new PDF
output_pdf.save(output_path)
# Complete
self.frame.winfo_toplevel().after(0, lambda: self.progress_var.set(100))
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set(f"PDF split complete: {output_filename}"))
self.frame.winfo_toplevel().after(0, lambda: messagebox.showinfo("Success",
f"PDF split successfully.\nPages {start}-{end} extracted.\nSaved to: {output_path}"))
except Exception as e:
error_msg = str(e)
raise Exception(f"Failed to split PDF by range: {error_msg}")
def _split_single_pages(self):
"""Split PDF into individual single-page PDF files, one per page.
If page numbers are specified, only those pages are split out.
If no page numbers are specified, all pages are split."""
try:
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set("Splitting into single pages..."))
self.frame.winfo_toplevel().after(0, lambda: self.progress_var.set(0))
# Get source PDF filename without extension
pdf_basename = os.path.splitext(os.path.basename(self.pdf_path.get()))[0]
# Open source PDF
source_pdf = pdfium.PdfDocument(self.pdf_path.get())
# Determine which pages to extract
if self._pages_to_extract:
pages = self._pages_to_extract
else:
# No specific pages given — split all pages
pages = list(range(1, self.total_pages + 1))
output_files = []
for i, page_num in enumerate(pages):
if self.conversion_canceled:
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set("Split canceled"))
return
# Update progress
progress_pct = ((i + 1) / len(pages)) * 100
self.frame.winfo_toplevel().after(0, lambda p=progress_pct: self.progress_var.set(p))
self.frame.winfo_toplevel().after(0, lambda p=page_num:
self.status_var.set(f"Splitting page {p}..."))
# Create a new single-page PDF for each page
output_pdf = pdfium.PdfDocument.new()
output_pdf.import_pages(source_pdf, [page_num - 1])
output_filename = f"{pdf_basename}_page_{page_num}.pdf"
output_path = os.path.join(self.output_dir.get(), output_filename)
output_pdf.save(output_path)
output_files.append(output_filename)
# Complete
self.frame.winfo_toplevel().after(0, lambda: self.progress_var.set(100))
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set(f"Split complete: {len(output_files)} files created"))
self.frame.winfo_toplevel().after(0, lambda: messagebox.showinfo("Success",
f"PDF split into {len(output_files)} individual page files.\nSaved to: {self.output_dir.get()}"))
except Exception as e:
error_msg = str(e)
raise Exception(f"Failed to split pages: {error_msg}")
def _split_by_interval(self):
"""Extract every Nth page from PDF"""
try:
interval = self.page_interval.get()
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set(f"Extracting every {interval} page(s)..."))
self.frame.winfo_toplevel().after(0, lambda: self.progress_var.set(0))
# Get source PDF filename without extension
pdf_basename = os.path.splitext(os.path.basename(self.pdf_path.get()))[0]
# Create output filename
output_filename = f"{pdf_basename}_every_{interval}_pages.pdf"
output_path = os.path.join(self.output_dir.get(), output_filename)
# Open source PDF
source_pdf = pdfium.PdfDocument(self.pdf_path.get())
# Create list of pages to extract
pages_to_extract = list(range(0, self.total_pages, interval))
# Create new PDF with selected pages
output_pdf = pdfium.PdfDocument.new()
for i, page_idx in enumerate(pages_to_extract):
if self.conversion_canceled:
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set("Extraction canceled"))
return
# Update progress
progress_pct = ((i + 1) / len(pages_to_extract)) * 100
current_page = page_idx + 1
self.frame.winfo_toplevel().after(0, lambda p=progress_pct: self.progress_var.set(p))
self.frame.winfo_toplevel().after(0, lambda p=current_page:
self.status_var.set(f"Processing page {p}..."))
# Get page and add it to the output document
output_pdf.import_pages(source_pdf, [page_idx])
# Save the new PDF
output_pdf.save(output_path)
# Complete
self.frame.winfo_toplevel().after(0, lambda: self.progress_var.set(100))
self.frame.winfo_toplevel().after(0, lambda: self.status_var.set(f"Page extraction complete: {output_filename}"))
self.frame.winfo_toplevel().after(0, lambda: messagebox.showinfo("Success",
f"Pages extracted successfully.\n{len(pages_to_extract)} pages extracted.\nSaved to: {output_path}"))
except Exception as e:
error_msg = str(e)
raise Exception(f"Failed to extract pages: {error_msg}")
def cancel_split(self):
self.conversion_canceled = True
self.status_var.set("Canceling split operation...")
def open_output_folder(self):
utils.open_output_folder(self.output_dir.get())