Update README version history for v0.9rc3

- Improved documentation with optimization levels
- Updated version history
- Fixed aspect ratio in PDF output

README.md

@@ -10,10 +10,11 @@ A command-line tool for processing and cleaning scanned musical score PDFs. This
 - **PNG Optimization**: Optimize PNG files using optipng (if installed)
 - **Modular Processing**: Process your files step by step or all at once
 - **High Quality Output**: Preserve image quality throughout the process
+- **Professional PDF Output**: Generate A4-sized PDFs with proper borders and centered content
 
 ## Installation
 
-1. Ensure you have Python 3.8+ installed
+1. Ensure you have Python 3.12+ installed
 2. Install uv (recommended) or pip
 3. Clone this repository:
    ```bash
@@ -55,15 +56,20 @@ Automatically detects and corrects page rotation by analyzing staff lines.
 
 ### Optimize Pages
 ```bash
-./pdf_cleaner.py optimize
+./pdf_cleaner.py optimize [--level {1,2,3}]
 ```
-Trims excess white space and optionally runs PNG optimization (requires optipng).
+Processes pages with different optimization levels:
+- Level 1: Only trims excess white space
+- Level 2: Trims white space and converts to 1-bit monochrome
+- Level 3: All optimizations + PNG optimization (requires optipng)
+
+Default level is 1 if not specified.
 
 ### Create Final PDF
 ```bash
 ./pdf_cleaner.py finalize output.pdf
 ```
-Combines all processed pages into a final PDF and cleans up temporary files.
+Combines all processed pages into a final PDF with proper A4 sizing, borders, and centered content.
 
 ### Typical Workflow
 ```bash
@@ -83,7 +89,10 @@ Combines all processed pages into a final PDF and cleans up temporary files.
 3. **Optimization**:
    - Detects content boundaries and removes excess white space
    - Optionally runs optipng for additional file size reduction
-4. **Finalization**: Combines processed images back into a PDF using img2pdf
+4. **Finalization**: 
+   - Combines processed images into a professional A4-sized PDF
+   - Adds configurable borders around content
+   - Centers content on each page while maintaining aspect ratio
 
 ## Dependencies
 
@@ -100,4 +109,19 @@ Contributions are welcome! Please feel free to submit a Pull Request.
 
 ## License
 
-[Insert chosen license here]
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
+## Version History
+
+- v0.9rc3: Third release candidate
+  - Switched to parallel processing in optimization
+  - Removed unused imports and variables
+  - Added `ruff` as a development dependency
+- v0.9rc2: Second release candidate
+  - Improved documentation
+  - Added optimization level descriptions
+  - Fixed aspect ratio in PDF output
+- v0.9rc1: First release candidate with full functionality
+  - Professional PDF output with A4 sizing and borders
+  - Complete image processing pipeline
+  - Configurable settings

pdf_cleaner.py

@@ -1,11 +1,7 @@
 #!/usr/bin/env -S uv run
 
 import os
-import shutil
 import subprocess
-from pathlib import Path
-from typing import List, Tuple
-
 import click
 import cv2
 import img2pdf
@@ -13,8 +9,8 @@ import numpy as np
 from pdf2image import convert_from_path
 
 import settings
-from settings import OptimizationLevel
 from PIL import Image
+import concurrent.futures
 
 class Settings:
     TRIM_PADDING_PIXELS = 20
@@ -22,8 +18,6 @@ class Settings:
     OPTIPNG_OPTIMIZATION_LEVEL = 7
     PDF_BORDER_SIZE = 50
 
-settings = Settings()
-
 def ensure_temp_dir():
     """Ensure temporary directory exists and return its path."""
     temp_dir = "temp_processed_images"
@@ -281,7 +275,7 @@ def run_optipng(file_path: str) -> bool:
         bool: True if successful, False otherwise
     """
     try:
-        result = subprocess.run(
+        subprocess.run(
             ['optipng', f'-o{settings.OPTIPNG_OPTIMIZATION_LEVEL}', file_path],
             capture_output=True,
             text=True,
@@ -306,13 +300,12 @@ def optimize(level):
         2: Level 1 + convert to 1-bit monochrome
         3: Level 2 + optipng optimization
     """
-    temp_dir = ensure_temp_dir()
     temp_files = get_temp_files()
     if not temp_files:
         print("No pages found in temporary directory. Run 'extract' first.")
         return
     
-    opt_level = OptimizationLevel(level)
+    opt_level = settings.OptimizationLevel(level)
     
     total_files = len(temp_files)
     successful = {
@@ -323,49 +316,62 @@ def optimize(level):
     
     print(f"Processing {total_files} images at optimization level {level}...")
     
-    # Step 1: Always trim whitespace
+    # Step 1: Convert to monochrome if level >= 2
-    print("\nTrimming whitespace from images...")
+    if int(opt_level) >= int(settings.OptimizationLevel.MONOCHROME):
-    for i, file_path in enumerate(temp_files, 1):
-        print(f"[{i}/{total_files}] Processing {os.path.basename(file_path)}...", end='', flush=True)
-        # Only optimize if this is the final step (level 1)
-        if trim_whitespace(file_path, is_final=(opt_level == OptimizationLevel.TRIM)):
-            successful['trim'] += 1
-            print(" ")
-        else:
-            print(" ")
-    
-    # Step 2: Convert to monochrome if level >= 2
-    if int(opt_level) >= int(OptimizationLevel.MONOCHROME):
         print("\nConverting to monochrome...")
-        for i, file_path in enumerate(temp_files, 1):
+        with concurrent.futures.ThreadPoolExecutor() as executor:
-            print(f"[{i}/{total_files}] Converting {os.path.basename(file_path)}...", end='', flush=True)
+            futures = {executor.submit(convert_to_monochrome, file_path, (opt_level == settings.OptimizationLevel.MONOCHROME)): file_path for file_path in temp_files}
-            # Only optimize if this is the final step (level 2)
+            for future in concurrent.futures.as_completed(futures):
-            if convert_to_monochrome(file_path, is_final=(opt_level == OptimizationLevel.MONOCHROME)):
+                file_path = futures[future]
-                successful['monochrome'] += 1
+                try:
-                print(" ")
+                    if future.result():
-            else:
+                        successful['monochrome'] += 1
-                print(" ")
+                        print(f"Converted {os.path.basename(file_path)}")
+                    else:
+                        print(f"Failed to convert {os.path.basename(file_path)}")
+                except Exception as exc:
+                    print(f"{os.path.basename(file_path)} generated an exception: {exc}")
+    
+    # Step 2: Always trim whitespace
+    print("\nTrimming whitespace from images...")
+    with concurrent.futures.ThreadPoolExecutor() as executor:
+        futures = {executor.submit(trim_whitespace, file_path, (opt_level == settings.OptimizationLevel.TRIM)): file_path for file_path in temp_files}
+        for future in concurrent.futures.as_completed(futures):
+            file_path = futures[future]
+            try:
+                if future.result():
+                    successful['trim'] += 1
+                    print(f"Trimmed {os.path.basename(file_path)}")
+                else:
+                    print(f"Failed to trim {os.path.basename(file_path)}")
+            except Exception as exc:
+                print(f"{os.path.basename(file_path)} generated an exception: {exc}")
     
     # Step 3: Run optipng if level = 3
-    if opt_level == OptimizationLevel.FULL:
+    if opt_level == settings.OptimizationLevel.FULL:
         if check_optipng_installed():
             print("\nOptimizing PNG files with optipng...")
-            for i, file_path in enumerate(temp_files, 1):
+            with concurrent.futures.ThreadPoolExecutor() as executor:
-                print(f"[{i}/{total_files}] Optimizing {os.path.basename(file_path)}...", end='', flush=True)
+                futures = {executor.submit(run_optipng, file_path): file_path for file_path in temp_files}
-                if run_optipng(file_path):
+                for future in concurrent.futures.as_completed(futures):
-                    successful['optipng'] += 1
+                    file_path = futures[future]
-                    print(" ")
+                    try:
-                else:
+                        if future.result():
-                    print(" ")
+                            successful['optipng'] += 1
+                            print(f"Optimized {os.path.basename(file_path)}")
+                        else:
+                            print(f"Failed to optimize {os.path.basename(file_path)}")
+                    except Exception as exc:
+                        print(f"{os.path.basename(file_path)} generated an exception: {exc}")
         else:
             print("\nNote: optipng not found. Skipping PNG optimization.")
     
     # Print summary
     print("\nOptimization complete!")
     print(f"Successfully trimmed: {successful['trim']}/{total_files} images")
-    if int(opt_level) >= int(OptimizationLevel.MONOCHROME):
+    if int(opt_level) >= int(settings.OptimizationLevel.MONOCHROME):
         print(f"Successfully converted to monochrome: {successful['monochrome']}/{total_files} images")
-    if opt_level == OptimizationLevel.FULL and check_optipng_installed():
+    if opt_level == settings.OptimizationLevel.FULL and check_optipng_installed():
         print(f"Successfully optimized with optipng: {successful['optipng']}/{total_files} images")
 
 @cli.command()

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "notes-cleaner"
-version = "0.9rc1"
+version = "0.9rc3"
 description = "Add your description here"
 readme = "README.md"
 license = "MIT"
@@ -12,3 +12,8 @@ dependencies = [
     "click>=8.1.7",
     "pydantic>=2.10.3",
 ]
+
+[dependency-groups]
+dev = [
+    "ruff>=0.8.1",
+]

uv.lock

@@ -33,19 +33,27 @@ wheels = [
 
 [[package]]
 name = "notes-cleaner"
-version = "0.1.0"
+version = "0.9rc2"
 source = { virtual = "." }
 dependencies = [
     { name = "click" },
     { name = "pydantic" },
 ]
 
+[package.dev-dependencies]
+dev = [
+    { name = "ruff" },
+]
+
 [package.metadata]
 requires-dist = [
     { name = "click", specifier = ">=8.1.7" },
     { name = "pydantic", specifier = ">=2.10.3" },
 ]
 
+[package.metadata.requires-dev]
+dev = [{ name = "ruff", specifier = ">=0.8.1" }]
+
 [[package]]
 name = "pydantic"
 version = "2.10.3"
@@ -99,6 +107,31 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/df/c3/b15fb833926d91d982fde29c0624c9f225da743c7af801dace0d4e187e71/pydantic_core-2.27.1-cp313-none-win_arm64.whl", hash = "sha256:45cf8588c066860b623cd11c4ba687f8d7175d5f7ef65f7129df8a394c502de5", size = 1882983 },
 ]
 
+[[package]]
+name = "ruff"
+version = "0.8.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/95/d0/8ff5b189d125f4260f2255d143bf2fa413b69c2610c405ace7a0a8ec81ec/ruff-0.8.1.tar.gz", hash = "sha256:3583db9a6450364ed5ca3f3b4225958b24f78178908d5c4bc0f46251ccca898f", size = 3313222 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/a2/d6/1a6314e568db88acdbb5121ed53e2c52cebf3720d3437a76f82f923bf171/ruff-0.8.1-py3-none-linux_armv6l.whl", hash = "sha256:fae0805bd514066f20309f6742f6ee7904a773eb9e6c17c45d6b1600ca65c9b5", size = 10532605 },
+    { url = "https://files.pythonhosted.org/packages/89/a8/a957a8812e31facffb6a26a30be0b5b4af000a6e30c7d43a22a5232a3398/ruff-0.8.1-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:b8a4f7385c2285c30f34b200ca5511fcc865f17578383db154e098150ce0a087", size = 10278243 },
+    { url = "https://files.pythonhosted.org/packages/a8/23/9db40fa19c453fabf94f7a35c61c58f20e8200b4734a20839515a19da790/ruff-0.8.1-py3-none-macosx_11_0_arm64.whl", hash = "sha256:cd054486da0c53e41e0086e1730eb77d1f698154f910e0cd9e0d64274979a209", size = 9917739 },
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+]
+
 [[package]]
 name = "typing-extensions"
 version = "4.12.2"