v1.1.6

v1.1.0

.github/workflows/test_publish.yml

@@ -0,0 +1,61 @@
+name: Build multi-arch Docker Image
+
+on:
+  # Build and push
+  #release:
+  #  types: [published]
+  # Build only
+  #push:
+  #  branches: [main]
+  # TODO - enable build on pull requests if build times can be reduced
+  # pull_request:
+  workflow_dispatch:
+
+env:
+  IMAGE_REPOSITORY: ghcr.io/denizsafak/abogen
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Login to Github Container Registry
+      # Only if we need to push an image
+      if: ${{ github.event_name == 'release' && github.event.action == 'published' }}
+      uses: docker/login-action@v3
+      with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+    # Setup for buildx
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@v3
+
+    # Debugging information
+    - name: Docker info
+      run: docker info
+
+    - name: Buildx inspect
+      run: docker buildx inspect
+
+    # Build and (optionally) push the image
+    - name: Build image
+      uses: docker/build-push-action@v6
+      with:
+        context: ./abogen
+        file: ./abogen/Dockerfile
+        # platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x
+        platforms: linux/amd64,linux/arm64
+        # Only push if we are publishing a release
+        push: ${{ github.event_name == 'release' && github.event.action == 'published' }}
+        # Use a 'temp' tag, that won't be pushed, for non-release builds
+        tags: ${{ env.IMAGE_REPOSITORY }}:${{ github.event.release.tag_name || 'temp' }}
+        # Use a cache to reduce build times
+        cache-to: type=gha,mode=max
+        cache-from: type=gha

CHANGELOG.md

@@ -1,3 +1,51 @@
+# 1.1.6
+- Improved EPUB chapter detection: Now reliably detects chapters from NAV HTML (TOC) files, even in non-standard EPUBs, fixes the issue mentioned by @jefro108 in #33
+- Fixed SRT subtitle numbering issue, mentioned by @page-muncher in #41
+- Fixed missing chapter contents issue in some EPUB files.
+- Windows installer script now prompts the user to install the CUDA version of PyTorch even if no NVIDIA GPU is detected.
+- Abogen now includes Mandarin Chinese (misaki[zh]) by default; manual installation is no longer required.
+
+# 1.1.5
+- Changed the temporary directory path to user's cache directory, which is more appropriate for storing cache files and avoids issues with unintended cleanup.
+- Fixed the isssue where extra metadata information was not being saved to M4B files when they have no chapters, ensuring that all metadata is correctly written to the output file.
+- Fixed sleep prevention process not ending if program exited using Ctrl+C or kill.
+- Improved automatic filename suffixing to better prevent overwriting files with the same name, even if they have different extensions.
+- Improvements in code and documentation.
+
+# 1.1.4
+- Fixed extra metadata information not being saved to M4B files, ensuring that all metadata is correctly written to the output file.
+- Reformatted the code using Black for better readability and consistency.
+
+# 1.1.3
+- `M4B (with chapters)` generation is faster now, as it directly generates `m4b` files instead of converting from `wav`, which significantly reduces processing time, fixes the issue mentioned by @Milor123 in #39 
+- Better sleep state handling for Linux.
+- The app window now tries to fit the screen if its height would exceed the available display area.
+- Fixed issue where the app would not restart properly on Windows.
+- Fixed last sentence/subtitle entry timing in generated subtitles, the end time of the final subtitle entry now correctly matches the end of the audio chunk, preventing zero or invalid timings at the end.
+
+# v1.1.2
+- Now you can play the audio files while they are processing.
+- Audio and subtitle files are now written directly to disk during generation, which significantly reduces memory usage.
+- Added a better logic for detecting chapters from the epub, mentioned by @jefro108 in #33
+- Added a new option: `Reset to default settings`, allowing users to reset all settings to their default values.
+- Added a new option: `Disable Kokoro's internet access`. This lets you prevent Kokoro from downloading models or voices from HuggingFace Hub, which can help avoid long waiting times if your computer is offline.
+- HuggingFace Hub telemetry is now disabled by default for improved privacy. (HuggingFace Hub is used by Kokoro to download its models)
+- cPotential fix for #37 and #38, where the program was becoming slow while processing large files.
+- Fixed `Open folder` and `Open file` buttons in the queue manager GUI.
+- Improvements in code structure.
+
+# v1.1.1
+- Fixed adding wrong file in queue for EPUB and PDF files, ensuring the correct file is added to the queue.
+- Reformatted the code using Black.
+
+# v1.1.0
+- Added queue system for processing multiple items, allowing users to add multiple files and process them in a queue, mentioned by @jborza in #30 (Special thanks to @jborza for implementing this feature in PR #35)
+- Added a feature that allows selecting multiple items in book handler (in right click menu) by @jborza in #31, that fixes #28
+- Added dark theme support, allowing users to switch between light and dark themes in the settings.
+- Added auto-accept system to the chapter options dialog in conversion process, allowing the dialog to auto-accept after a certain time if no action is taken.
+- Added new option: `Configure max lines in log window` that allows configuring the maximum number of lines to display in the log window.
+- Improvements in documentation and code.
+
 # v1.0.9
 - Added chunking/segmenting system that fixes memory outage issues when processing large audio files.
 - Added new option: `Subtitle format`, allowing users to choose between `srt` , `ass (wide)`, `ass (narrow)`, and `ass (centered wide)` and `ass (centered narrow)`

README.md

@@ -34,6 +34,7 @@ This method handles everything automatically - installing all dependencies inclu
 #### OPTION 2: Install using pip
 ```bash
 # Create a virtual environment (optional)
+mkdir abogen && cd abogen
 python -m venv venv
 venv\Scripts\activate
 
@@ -53,6 +54,7 @@ pip install abogen
 brew install espeak-ng
 
 # Create a virtual environment (recommended)
+mkdir abogen && cd abogen
 python3 -m venv venv
 source venv/bin/activate
 
@@ -67,6 +69,7 @@ sudo pacman -S espeak-ng # Arch Linux
 sudo dnf install espeak-ng # Fedora
 
 # Create a virtual environment (recommended)
+mkdir abogen && cd abogen
 python3 -m venv venv
 source venv/bin/activate
 
@@ -116,36 +119,62 @@ abogen
 
 Here’s Abogen in action: in this demo, it processes ∼3,000 characters of text in just 11 seconds and turns it into 3 minutes and 28 seconds of audio, and I have a low-end **RTX 2060 Mobile laptop GPU**. Your results may vary depending on your hardware.
 
-## `Key Features`
-- **Supported formats**: `ePub`, `PDF`, or `.TXT` files (or use built-in text editor)
-- **Speed**: Adjust speech rate from `0.1x` to `2.0x`
-- **Voices**: First letter of the language code (e.g., `a` for American English, `b` for British English, etc.), second letter is for `m` for male and `f` for female.
-- **Voice mixer**: Create custom voices by mixing different voice models with a profile system.
-- **Generate subtitles**: `Disabled`, `Sentence`, `Sentence + Comma`, `1 word`, `2 words`, `3 words`, etc. (Represents the number of words in each subtitle entry)
-- **Output formats**: `.WAV`, `.FLAC`, `.MP3`, `.OPUS` and `M4B (with chapters)` (Special thanks to [@jborza](https://github.com/jborza) for chapter support in PR [#10](https://github.com/denizsafak/abogen/pull/10))
-- **Save location**: `Save next to input file`, `Save to desktop`, or `Choose output folder`
-- **Chapter Control**: Select specific `chapters` from ePUBs or `chapters + pages` from PDFs.
-- **Save each chapter separately**: Save each chapter in e-books as a separate audio file.
-- **Project folder**: Save the converted items in a project folder with available metadata files.
-- **Options**:
-    - **Replace single newlines with spaces**: Replaces single newlines with spaces in the text. This is useful for texts that have imaginary line breaks.
-    - **Configure max words per subtitle**: Configures the maximum number of words per subtitle entry.
-    - **Subtitle format**: Configures the subtitle format as `srt`, `ass (wide)`, `ass (narrow)`, `ass (centered wide)`, or `ass (centered narrow)`.
-    - **Separate chapters audio format**: Configures the audio format for separate chapters as `wav`, `flac`, `mp3`, or `opus`.
-    - **Create desktop shortcut**: Creates a shortcut on your desktop for easy access.
-    - **Open config.json directory**: Opens the directory where the configuration file is stored.
-    - **Open temp directory**: Opens the temporary directory where converted text files are stored.
-    - **Clear temporary files**: Deletes temporary files created during the conversion or preview.
-    - **Check for updates at startup**: Automatically checks for updates when the program starts.
-- **After conversion**: `Open file`, `Go to folder`, `New conversion`, or `Go back`.
+## `Configuration`
+
+| Options | Description |
+|---------|-------------|
+| **Input Box** | Drag and drop `ePub`, `PDF`, or `.TXT` files (or use built-in text editor) |
+| **Queue options** | Add multiple files to a queue and process them in batch, with individual settings for each file. See [Queue mode](#queue-mode) for more details. |
+| **Speed** | Adjust speech rate from `0.1x` to `2.0x` |
+| **Select Voice** | First letter of the language code (e.g., `a` for American English, `b` for British English, etc.), second letter is for `m` for male and `f` for female. |
+| **Voice mixer** | Create custom voices by mixing different voice models with a profile system. See [Voice Mixer](#voice-mixer) for more details. |
+| **Voice preview** | Listen to the selected voice before processing. |
+| **Generate subtitles** | `Disabled`, `Sentence`, `Sentence + Comma`, `1 word`, `2 words`, `3 words`, etc. (Represents the number of words in each subtitle entry) |
+| **Output voice format** | `.WAV`, `.FLAC`, `.MP3`, `.OPUS (best compression)` and `M4B (with chapters)` (Special thanks to [@jborza](https://github.com/jborza) for chapter support in PR [#10](https://github.com/denizsafak/abogen/pull/10)) |
+| **Output subtitle format** | Configures the subtitle format as `SRT (standard)`, `ASS (wide)`, `ASS (narrow)`, `ASS (centered wide)`, or `ASS (centered narrow)`. |
+| **Replace single newlines with spaces** | Replaces single newlines with spaces in the text. This is useful for texts that have imaginary line breaks. |
+| **Save location** | `Save next to input file`, `Save to desktop`, or `Choose output folder` |
+
+| Book handler options | Description |
+|---------|-------------|
+| **Chapter Control** | Select specific `chapters` from ePUBs or `chapters + pages` from PDFs. |
+| **Save each chapter separately** | Save each chapter in e-books as a separate audio file. |
+| **Create a merged version** | Create a single audio file that combines all chapters. (If `Save each chapter separately` is disabled, this option will be the default behavior.) |
+| **Save in a project folder with metadata** | Save the converted items in a project folder with available metadata files. |
+
+| Menu options | Description |
+|---------|-------------|
+| **Theme** | Change the application's theme using `System`, `Light`, or `Dark` options. |
+| **Configure max words per subtitle** | Configures the maximum number of words per subtitle entry. |
+| **Configure max lines in log window** | Configures the maximum number of lines to display in the log window. |
+| **Separate chapters audio format** | Configures the audio format for separate chapters as `wav`, `flac`, `mp3`, or `opus`. |
+| **Create desktop shortcut** | Creates a shortcut on your desktop for easy access. |
+| **Open config directory** | Opens the directory where the configuration file is stored. |
+| **Open cache directory** | Opens the cache directory where converted text files are stored. |
+| **Clear cache files** | Deletes cache files created during the conversion or preview. |
+| **Check for updates at startup** | Automatically checks for updates when the program starts. |
+| **Disable Kokoro's internet access** | Prevents Kokoro from downloading models or voices from HuggingFace Hub, useful for offline use. |
+| **Reset to default settings** | Resets all settings to their default values. |
 
 ## `Voice Mixer`
 <img title="Abogen Voice Mixer" src='https://raw.githubusercontent.com/denizsafak/abogen/refs/heads/main/demo/voice_mixer.png'>
 
 With voice mixer, you can create custom voices by mixing different voice models. You can adjust the weight of each voice and save your custom voice as a profile for future use. The voice mixer allows you to create unique and personalized voices. (Huge thanks to [@jborza](https://github.com/jborza) for making this possible through his contributions in [#5](https://github.com/denizsafak/abogen/pull/5))
 
+## `Queue Mode`
+<img title="Abogen queue mode" src='https://raw.githubusercontent.com/denizsafak/abogen/refs/heads/main/demo/queue.png'>
+
+Abogen supports **queue mode**, allowing you to add multiple files to a processing queue. This is useful if you want to convert several files in one batch.
+
+- You can add text files (`.txt`) directly using the **Add files** button in the Queue Manager. To add PDF or EPUB files, use the input box in the main window and click the **Add to Queue** button.
+- Each file in the queue keeps the configuration settings that were active when it was added. Changing the main window configuration afterward does **not** affect files already in the queue.
+- You can view each file's configuration by hovering over them.
+
+Abogen will process each item in the queue automatically, saving outputs as configured.
+> Special thanks to [@jborza](https://github.com/jborza) for adding queue mode in PR [#35](https://github.com/denizsafak/abogen/pull/35)
+
 ## `About Chapter Markers`
-When you process ePUB or PDF files, Abogen converts them into text files stored in your temporary directory. When you click "Edit," you're actually modifying these converted text files. In these text files, you'll notice tags that look like this:
+When you process ePUB or PDF files, Abogen converts them into text files stored in your cache directory. When you click "Edit," you're actually modifying these converted text files. In these text files, you'll notice tags that look like this:
 
 ```
 <<CHAPTER_MARKER:Chapter Title>>
@@ -168,7 +197,7 @@ When you process the text file, Abogen will detect these markers automatically a
 ![Abogen Chapter Marker](https://raw.githubusercontent.com/denizsafak/abogen/refs/heads/main/demo/chapter_marker.png)
 
 ## `About Metadata Tags`
-Similar to chapter markers, it is possible to add metadata tags to `M4B` files. This is useful for audiobook players that support metadata, allowing you to add information like title, author, year, etc. Abogen automatically adds these tags when you process ePUB or PDF files, but you can also add them manually to your text files. Add metadata tags **at the beginning of your text file** like this:
+Similar to chapter markers, it is possible to add metadata tags for `M4B` files. This is useful for audiobook players that support metadata, allowing you to add information like title, author, year, etc. Abogen automatically adds these tags when you process ePUB or PDF files, but you can also add them manually to your text files. Add metadata tags **at the beginning of your text file** like this:
 ```
 <<METADATA_TITLE:Title>>
 <<METADATA_ARTIST:Author>>
@@ -241,7 +270,7 @@ Abogen launches automatically inside the container.
 
 Known issues:
 - Audio preview is not working inside container (ALSA error).
-- `Open temp directory` and `Open configuration directory` options in settings not working. (Tried pcmanfm, did not work with Abogen).
+- `Open cache directory` and `Open configuration directory` options in settings not working. (Tried pcmanfm, did not work with Abogen).
 
 (Special thanks to [@geo38](https://www.reddit.com/user/geo38/) from Reddit, who provided the Dockerfile and instructions in [this comment](https://www.reddit.com/r/selfhosted/comments/1k8x1yo/comment/mpe0bz8/).)
 
@@ -254,12 +283,12 @@ Abogen is a standalone project, but it is inspired by and shares some similariti
 - [ebook2audiobook](https://github.com/DrewThomasson/ebook2audiobook): Convert ebooks to audiobooks with chapters and metadata using dynamic AI models and voice cloning
 
 ## `Roadmap`
-- [ ] Add OCR scan feature for PDF files using docling.
+- [ ] Add OCR scan feature for PDF files using docling/teserract.
 - [x] Add chapter metadata for .m4a files. (Issue [#9](https://github.com/denizsafak/abogen/issues/9), PR [#10](https://github.com/denizsafak/abogen/pull/10))
 - [ ] Add support for different languages in GUI.
 - [x] Add voice formula feature that enables mixing different voice models. (Issue [#1](https://github.com/denizsafak/abogen/issues/1), PR [#5](https://github.com/denizsafak/abogen/pull/5))
 - [ ] Add support for kokoro-onnx (If it's necessary).
-- [ ] Add dark mode.
+- [x] Add dark mode.
 
 ## `Troubleshooting`
 If you encounter any issues while running Abogen, try launching it from the command line with:

WINDOWS_INSTALL.bat

@@ -1,5 +1,5 @@
 @echo off
-setlocal
+setlocal EnableDelayedExpansion
 cd /d "%~dp0"
 
 :: Set misaki language
@@ -23,7 +23,6 @@ set CUDA_VERSION=128
 for /f "delims=: tokens=*" %%A in ('findstr /b ::: "%~f0"') do @echo(%%A
 
 set CURRENT_DIR="%CD%"
-setlocal enabledelayedexpansion
 set NAME=abogen
 set PROJECTFOLDER=abogen
 set RUN=python_embedded\Scripts\abogen.exe
@@ -230,7 +229,7 @@ if errorlevel 1 (
 
 :: Install setup requirements
 echo Installing setup requirements...
-%PYTHON_CONSOLE_PATH% -m pip install --upgrade setuptools setuptools-scm wheel sphinx hatchling --no-warn-script-location
+%PYTHON_CONSOLE_PATH% -m pip install --upgrade setuptools setuptools-scm wheel sphinx hatchling editables --no-warn-script-location
 if errorlevel 1 (
     echo Failed to install setup requirements.
     pause
@@ -250,7 +249,7 @@ if errorlevel 1 (
 echo Checking and installing project dependencies...
 if exist %PYPROJECT_FILE% (
     echo Installing project from pyproject.toml...
-    %PYTHON_CONSOLE_PATH% -m pip install . --no-warn-script-location
+    %PYTHON_CONSOLE_PATH% -m pip install -e . --no-warn-script-location
     if errorlevel 1 (
         echo Failed to install from pyproject.toml.
         pause
@@ -276,6 +275,7 @@ if "%MISAKI_LANG%" NEQ "en" (
 for /f %%i in ('%PYTHON_CONSOLE_PATH% -c "from abogen.is_nvidia import check; print(check())"') do set IS_NVIDIA=%%i
 
 :: Check if torch is installed with CUDA support
+echo.
 echo Checking CUDA availability...
 if /I "%IS_NVIDIA%"=="true" (
     for /f %%i in ('%PYTHON_CONSOLE_PATH% -c "from torch.cuda import is_available; print(is_available())"') do set cuda_available=%%i
@@ -293,7 +293,26 @@ if /I "%IS_NVIDIA%"=="true" (
         echo CUDA is available on NVIDIA GPU.
     )
 ) else (
-    echo GPU is not NVIDIA. Skipping PyTorch CUDA installation.
+    echo.
+    echo Unable to detect an NVIDIA GPU in your system.
+    echo.
+    echo Do you want to install PyTorch anyway?
+    echo.
+    echo If you DO have an NVIDIA GPU, please press Y.
+    echo If you DO NOT have an NVIDIA GPU, please press N.
+    echo.
+    choice /C YN /M "Y=Yes, N=No"
+    if errorlevel 2 (
+        echo Skipping PyTorch installation.
+    ) else (
+        echo Installing PyTorch with CUDA %CUDA_VERSION% support...
+        %PYTHON_CONSOLE_PATH% -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu%CUDA_VERSION% --no-warn-script-location
+        if errorlevel 1 (
+            echo Failed to install PyTorch.
+            pause
+            exit /b
+        )
+    )
 )
 
 :: Ask user if they want to create a desktop shortcut

abogen/VERSION

@@ -1 +1 @@
-1.0.9
+1.1.6

abogen/assets/settings.svg

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<svg height="800px" width="800px" version="1.1" id="_x32_" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" 
+	 viewBox="0 0 512 512"  xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#808080;}
+</style>
+<g>
+	<path class="st0" d="M502.325,307.303l-39.006-30.805c-6.215-4.908-9.665-12.429-9.668-20.348c0-0.084,0-0.168,0-0.252
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+</g>
+</svg>

abogen/book_handler.py

@@ -22,7 +22,7 @@ from PyQt5.QtWidgets import (
     QLabel,
 )
 from PyQt5.QtCore import Qt
-from utils import clean_text, calculate_text_length
+from abogen.utils import clean_text, calculate_text_length
 import os
 import logging  # Add logging
 import urllib.parse
@@ -111,7 +111,7 @@ class HandlerDialog(QDialog):
         # Build treeview
         self.treeWidget = QTreeWidget(self)
         self.treeWidget.setHeaderHidden(True)
-        self.treeWidget.setSelectionMode(QTreeWidget.SingleSelection)
+        self.treeWidget.setSelectionMode(QTreeWidget.ExtendedSelection)
         self.treeWidget.setContextMenuPolicy(Qt.CustomContextMenu)
         self.treeWidget.customContextMenuRequested.connect(self.on_tree_context_menu)
 
@@ -161,6 +161,7 @@ class HandlerDialog(QDialog):
         self.treeWidget.expandAll()
         if self.treeWidget.topLevelItemCount() > 0:
             self.treeWidget.setCurrentItem(self.treeWidget.topLevelItem(0))
+            self.treeWidget.setFocus()
 
         # Update checkbox states
         self._update_checkbox_states()
@@ -239,20 +240,17 @@ class HandlerDialog(QDialog):
                     tag.decompose()
                 text = clean_text(soup.get_text()).strip()
                 if text:
-                    # Use doc_href as the identifier
                     self.content_texts[doc_href] = text
                     self.content_lengths[doc_href] = len(text)
-                    # Create a synthetic TOC entry
-                    title = f"Chapter {i+1}: {doc_href}"
-                    # Try to get a better title from <h1> or <title>
-                    h1 = soup.find("h1")
-                    if h1 and h1.get_text(strip=True):
-                        title = h1.get_text(strip=True)
-                    else:
-                        title_tag = soup.find("title")
-                        if title_tag and title_tag.get_text(strip=True):
-                            title = title_tag.get_text(strip=True)
 
+                    title = None
+                    if soup.title and soup.title.string:
+                        title = soup.title.string.strip()
+                    elif (h1 := soup.find("h1")) and h1.get_text(strip=True):
+                        title = h1.get_text(strip=True)
+
+                    if not title:
+                        title = f"Untitled Chapter {i+1}"
                     synthetic_toc.append(
                         (epub.Link(doc_href, title, doc_href), [])
                     )  # Wrap in tuple and empty list for compatibility
@@ -326,14 +324,31 @@ class HandlerDialog(QDialog):
                     f"Found NCX item via ITEM_NAVIGATION: {ncx_in_nav.get_name()}"
                 )
 
-        # 3. If still no nav_item, check for ITEM_NCX directly
-        if not nav_item:
-            ncx_items = list(self.book.get_items_of_type(ebooklib.ITEM_NCX))
+        # 3. If still no nav_item, check for NCX or fallback to NAV HTML in all ITEM_DOCUMENTs
+        ncx_constant = getattr(epub, "ITEM_NCX", None)
+        if not nav_item and ncx_constant is not None:
+            ncx_items = list(self.book.get_items_of_type(ncx_constant))
             if ncx_items:
-                nav_item = ncx_items[0]  # Take the first one
+                nav_item = ncx_items[0]
                 nav_type = "ncx"
-                logging.info(f"Found NCX item via ITEM_NCX: {ncx_items[0].get_name()}")
-
+                logging.info(f"Found NCX item via ITEM_NCX: {nav_item.get_name()}")
+        # Fallback: search all ITEM_DOCUMENTs for a NAV HTML with <nav epub:type="toc">
+        if not nav_item:
+            for item in self.book.get_items_of_type(ebooklib.ITEM_DOCUMENT):
+                try:
+                    html_content = item.get_content().decode("utf-8", errors="ignore")
+                    if "<nav" in html_content and 'epub:type="toc"' in html_content:
+                        soup = BeautifulSoup(html_content, "html.parser")
+                        nav_tag = soup.find("nav", attrs={"epub:type": "toc"})
+                        if nav_tag:
+                            nav_item = item
+                            nav_type = "html"
+                            logging.info(
+                                f"Found NAV HTML with TOC in: {item.get_name()}"
+                            )
+                            break
+                except Exception as e:
+                    continue
         # 4. If no navigation item found by any method, trigger fallback
         if not nav_item or not nav_type:
             logging.warning(
@@ -518,10 +533,14 @@ class HandlerDialog(QDialog):
                         slice_html += self.doc_content.get(intermediate_doc_href, "")
                 except Exception:
                     pass
-
+            # Fallback: if slice_html is empty, try to get the whole file's text
+            if not slice_html.strip() and current_doc_html:
+                logging.warning(
+                    f"No content found for src '{current_src}', using full file as fallback."
+                )
+                slice_html = current_doc_html
             if slice_html.strip():
                 slice_soup = BeautifulSoup(slice_html, "html.parser")
-                # Add double newlines after <p> and <div> tags
                 for tag in slice_soup.find_all(["p", "div"]):
                     tag.append("\n\n")
                 for tag in slice_soup.find_all(["sup", "sub"]):
@@ -583,6 +602,23 @@ class HandlerDialog(QDialog):
             f"Finished processing EPUB navigation. Found {len(self.content_texts)} content sections linked to TOC."
         )
 
+    def _find_doc_key(self, base_href, doc_order, doc_order_decoded):
+        """Find the best matching doc_key for a given base_href using robust matching."""
+        candidates = [
+            base_href,
+            urllib.parse.unquote(base_href),
+        ]
+        base_name = os.path.basename(base_href).lower()
+        for k in list(doc_order.keys()) + list(doc_order_decoded.keys()):
+            if os.path.basename(k).lower() == base_name:
+                candidates.append(k)
+        for candidate in candidates:
+            if candidate in doc_order:
+                return candidate, doc_order[candidate]
+            elif candidate in doc_order_decoded:
+                return candidate, doc_order_decoded[candidate]
+        return None, None
+
     def _parse_ncx_navpoint(
         self,
         nav_point,
@@ -605,27 +641,15 @@ class HandlerDialog(QDialog):
 
         if src:
             base_href, fragment = src.split("#", 1) if "#" in src else (src, None)
-            # Try both original and decoded hrefs
-            doc_key = None
-            if base_href in doc_order:
-                doc_key = base_href
-                doc_idx = doc_order[base_href]
-            elif urllib.parse.unquote(base_href) in doc_order:
-                doc_key = urllib.parse.unquote(base_href)
-                doc_idx = doc_order[doc_key]
-            elif base_href in doc_order_decoded:
-                doc_key = base_href
-                doc_idx = doc_order_decoded[base_href]
-            elif urllib.parse.unquote(base_href) in doc_order_decoded:
-                doc_key = urllib.parse.unquote(base_href)
-                doc_idx = doc_order_decoded[doc_key]
-            else:
+            doc_key, doc_idx = self._find_doc_key(
+                base_href, doc_order, doc_order_decoded
+            )
+            if not doc_key:
                 logging.warning(
-                    f"Navigation entry '{title}' points to '{base_href}', which is not in the spine or document list."
+                    f"Navigation entry '{title}' points to '{base_href}', which is not in the spine or document list (even after basename fallback)."
                 )
                 current_entry_node["has_content"] = False
-                doc_key = None
-            if doc_key is not None:
+            else:
                 position = find_position_func(doc_key, fragment)
                 entry_data = {
                     "src": src,
@@ -700,28 +724,15 @@ class HandlerDialog(QDialog):
         current_entry_node["title"] = title
         current_entry_node["src"] = src
 
+        doc_key = None
+        doc_idx = None
+        position = 0
+        fragment = None
         if src:
             base_href, fragment = src.split("#", 1) if "#" in src else (src, None)
-            # Try both original and decoded hrefs
-            doc_key = None
-            if base_href in doc_order:
-                doc_key = base_href
-                doc_idx = doc_order[base_href]
-            elif urllib.parse.unquote(base_href) in doc_order:
-                doc_key = urllib.parse.unquote(base_href)
-                doc_idx = doc_order[doc_key]
-            elif base_href in doc_order_decoded:
-                doc_key = base_href
-                doc_idx = doc_order_decoded[base_href]
-            elif urllib.parse.unquote(base_href) in doc_order_decoded:
-                doc_key = urllib.parse.unquote(base_href)
-                doc_idx = doc_order_decoded[doc_key]
-            else:
-                logging.warning(
-                    f"Navigation entry '{title}' points to '{base_href}', which is not in the spine or document list."
+            doc_key, doc_idx = self._find_doc_key(
+                base_href, doc_order, doc_order_decoded
             )
-                current_entry_node["has_content"] = False
-                doc_key = None
             if doc_key is not None:
                 position = find_position_func(doc_key, fragment)
                 entry_data = {
@@ -733,13 +744,16 @@ class HandlerDialog(QDialog):
                 }
                 ordered_entries.append(entry_data)
                 current_entry_node["has_content"] = True
+            else:
+                logging.warning(
+                    f"Navigation entry '{title}' points to '{base_href}', which is not in the spine or document list (even after basename fallback)."
+                )
+                current_entry_node["has_content"] = False
         else:
             current_entry_node["has_content"] = False
 
-        child_ol = li_element.find("ol", recursive=False)
-        if child_ol:
+        for child_ol in li_element.find_all("ol", recursive=False):
             for child_li in child_ol.find_all("li", recursive=False):
-                # Pass find_position_func down recursively
                 self._parse_html_nav_li(
                     child_li,
                     ordered_entries,
@@ -748,11 +762,6 @@ class HandlerDialog(QDialog):
                     current_entry_node["children"],
                     find_position_func,
                 )
-
-        if title and (
-            current_entry_node.get("has_content", False)
-            or current_entry_node["children"]
-        ):
         tree_structure_list.append(current_entry_node)
 
     def _find_position_robust(self, doc_href, fragment_id):
@@ -849,6 +858,12 @@ class HandlerDialog(QDialog):
             has_parents = True
         self.treeWidget.setRootIsDecorated(has_parents)
 
+    def _update_checkbox_states(self):
+        """Update the checkbox states based on the current checked chapters."""
+        for i in range(self.treeWidget.topLevelItemCount()):
+            item = self.treeWidget.topLevelItem(i)
+            self._update_item_checkbox_state(item)
+
     def _build_epub_tree_from_nav(
         self, nav_nodes, parent_item, seen_content_hashes=None
     ):
@@ -990,10 +1005,21 @@ class HandlerDialog(QDialog):
                     bookmark_item.setData(0, Qt.UserRole, page_id)
                     # only allow checking if this chapter has content
                     if self.content_lengths.get(page_id, 0) > 0:
-                        bookmark_item.setFlags(bookmark_item.flags() | Qt.ItemIsUserCheckable)
-                        bookmark_item.setCheckState(0, Qt.Checked if page_id in self.checked_chapters else Qt.Unchecked)
+                        bookmark_item.setFlags(
+                            bookmark_item.flags() | Qt.ItemIsUserCheckable
+                        )
+                        bookmark_item.setCheckState(
+                            0,
+                            (
+                                Qt.Checked
+                                if page_id in self.checked_chapters
+                                else Qt.Unchecked
+                            ),
+                        )
                     else:
-                        bookmark_item.setFlags(bookmark_item.flags() & ~Qt.ItemIsUserCheckable)
+                        bookmark_item.setFlags(
+                            bookmark_item.flags() & ~Qt.ItemIsUserCheckable
+                        )
                     # map for uncategorized pages
                     self.bookmark_items_map[page_num] = bookmark_item
 
@@ -1020,10 +1046,21 @@ class HandlerDialog(QDialog):
                         page_item.setData(0, Qt.UserRole, page_id)
                         # only allow checking if this sub-page has content
                         if self.content_lengths.get(page_id, 0) > 0:
-                            page_item.setFlags(page_item.flags() | Qt.ItemIsUserCheckable)
-                            page_item.setCheckState(0, Qt.Checked if page_id in self.checked_chapters else Qt.Unchecked)
+                            page_item.setFlags(
+                                page_item.flags() | Qt.ItemIsUserCheckable
+                            )
+                            page_item.setCheckState(
+                                0,
+                                (
+                                    Qt.Checked
+                                    if page_id in self.checked_chapters
+                                    else Qt.Unchecked
+                                ),
+                            )
                         else:
-                            page_item.setFlags(page_item.flags() & ~Qt.ItemIsUserCheckable)
+                            page_item.setFlags(
+                                page_item.flags() & ~Qt.ItemIsUserCheckable
+                            )
 
                         added_pages.add(sub_page_num)
 
@@ -1031,11 +1068,15 @@ class HandlerDialog(QDialog):
 
         covered_pages = set(added_pages)
         # attach any pages without direct bookmarks under nearest preceding chapter
-        uncategorized_pages = [i for i in range(len(self.pdf_doc)) if i not in covered_pages]
+        uncategorized_pages = [
+            i for i in range(len(self.pdf_doc)) if i not in covered_pages
+        ]
         for page_num in uncategorized_pages:
             # find nearest previous bookmark
             prev_nums = [n for n in sorted(self.bookmark_items_map) if n < page_num]
-            parent_item = self.bookmark_items_map[prev_nums[-1]] if prev_nums else self.treeWidget
+            parent_item = (
+                self.bookmark_items_map[prev_nums[-1]] if prev_nums else self.treeWidget
+            )
             page_id = f"page_{page_num+1}"
             title = f"Page {page_num+1}"
             text = self.content_texts.get(page_id, "").strip()
@@ -1048,7 +1089,9 @@ class HandlerDialog(QDialog):
             # only allow checking if uncategorized page has content
             if self.content_lengths.get(page_id, 0) > 0:
                 page_item.setFlags(page_item.flags() | Qt.ItemIsUserCheckable)
-                page_item.setCheckState(0, Qt.Checked if page_id in self.checked_chapters else Qt.Unchecked)
+                page_item.setCheckState(
+                    0, Qt.Checked if page_id in self.checked_chapters else Qt.Unchecked
+                )
             else:
                 page_item.setFlags(page_item.flags() & ~Qt.ItemIsUserCheckable)
 
@@ -1074,7 +1117,9 @@ class HandlerDialog(QDialog):
             # only allow checking if standalone page has content
             if self.content_lengths.get(page_id, 0) > 0:
                 page_item.setFlags(page_item.flags() | Qt.ItemIsUserCheckable)
-                page_item.setCheckState(0, Qt.Checked if page_id in self.checked_chapters else Qt.Unchecked)
+                page_item.setCheckState(
+                    0, Qt.Checked if page_id in self.checked_chapters else Qt.Unchecked
+                )
             else:
                 page_item.setFlags(page_item.flags() & ~Qt.ItemIsUserCheckable)
 
@@ -1494,7 +1539,9 @@ class HandlerDialog(QDialog):
             authors_text = ", ".join(self.book_metadata["authors"])
             html_content += f"<p style='text-align: center; font-style: italic;'>By {authors_text}</p>"
 
-        if self.book_metadata["publisher"] or self.book_metadata.get("publication_year"):
+        if self.book_metadata["publisher"] or self.book_metadata.get(
+            "publication_year"
+        ):
             pub_info = []
             if self.book_metadata["publisher"]:
                 pub_info.append(f"Published by {self.book_metadata['publisher']}")
@@ -1536,7 +1583,9 @@ class HandlerDialog(QDialog):
             try:
                 author_items = self.book.get_metadata("DC", "creator")
                 if author_items:
-                    metadata["authors"] = [author[0] for author in author_items if len(author) > 0]
+                    metadata["authors"] = [
+                        author[0] for author in author_items if len(author) > 0
+                    ]
             except Exception as e:
                 logging.warning(f"Error extracting author metadata: {e}")
 
@@ -1560,7 +1609,7 @@ class HandlerDialog(QDialog):
                 if date_items and len(date_items) > 0:
                     date_str = date_items[0][0]
                     # Try to extract just the year from the date string
-                    year_match = re.search(r'\b(19|20)\d{2}\b', date_str)
+                    year_match = re.search(r"\b(19|20)\d{2}\b", date_str)
                     if year_match:
                         metadata["publication_year"] = year_match.group(0)
                     else:
@@ -1600,12 +1649,12 @@ class HandlerDialog(QDialog):
                 # Try to extract publication date from PDF metadata
                 if "creationDate" in pdf_info:
                     date_str = pdf_info["creationDate"]
-                    year_match = re.search(r'D:(\d{4})', date_str)
+                    year_match = re.search(r"D:(\d{4})", date_str)
                     if year_match:
                         metadata["publication_year"] = year_match.group(1)
                 elif "modDate" in pdf_info:
                     date_str = pdf_info["modDate"]
-                    year_match = re.search(r'D:(\d{4})', date_str)
+                    year_match = re.search(r"D:(\d{4})", date_str)
                     if year_match:
                         metadata["publication_year"] = year_match.group(1)
 
@@ -1637,11 +1686,15 @@ class HandlerDialog(QDialog):
         authors = metadata.get("authors") or ["Unknown"]
         authors_text = ", ".join(authors)
         album_artist = authors_text or "Unknown"
-        year = metadata.get("publication_year") or current_year  # Use publication year if available
+        year = (
+            metadata.get("publication_year") or current_year
+        )  # Use publication year if available
 
         # Count chapters/pages
         total_chapters = len(self.checked_chapters)
-        chapter_text = f"{total_chapters} {'Chapters' if self.file_type == 'epub' else 'Pages'}"
+        chapter_text = (
+            f"{total_chapters} {'Chapters' if self.file_type == 'epub' else 'Pages'}"
+        )
 
         # Format metadata tags
         metadata_tags = [
@@ -1651,7 +1704,7 @@ class HandlerDialog(QDialog):
             f"<<METADATA_YEAR:{year}>>",
             f"<<METADATA_ALBUM_ARTIST:{album_artist}>>",
             f"<<METADATA_COMPOSER:Narrator>>",
-            f"<<METADATA_GENRE:Audiobook>>"
+            f"<<METADATA_GENRE:Audiobook>>",
         ]
 
         return "\n".join(metadata_tags)
@@ -1723,7 +1776,10 @@ class HandlerDialog(QDialog):
                     if text:
                         all_content.append(text)
                         included_text_ids.add(page_id)
-            return metadata_tags + "\n\n" + "\n\n".join(all_content), all_checked_identifiers
+            return (
+                metadata_tags + "\n\n" + "\n\n".join(all_content),
+                all_checked_identifiers,
+            )
 
         iterator = QTreeWidgetItemIterator(self.treeWidget)
         while iterator.value():
@@ -1781,7 +1837,10 @@ class HandlerDialog(QDialog):
                         included_text_ids.add(identifier)
             iterator += 1
 
-        return metadata_tags + "\n\n" + "\n\n".join([t[1] for t in section_titles]), all_checked_identifiers
+        return (
+            metadata_tags + "\n\n" + "\n\n".join([t[1] for t in section_titles]),
+            all_checked_identifiers,
+        )
 
     def on_save_chapters_changed(self, state):
         self.save_chapters_separately = bool(state)
@@ -1809,8 +1868,33 @@ class HandlerDialog(QDialog):
     def get_save_as_project(self):
         return self.save_as_project
 
+    def check_selected_items(self):
+        self.set_selected_items_checked(True)
+
+    def uncheck_selected_items(self):
+        self.set_selected_items_checked(False)
+
+    def set_selected_items_checked(self, state: bool):
+        print(f"Checking selected items: {state}")
+        self.treeWidget.blockSignals(True)
+        for item in self.treeWidget.selectedItems():
+            if item.flags() & Qt.ItemIsUserCheckable:
+                item.setCheckState(0, Qt.Checked if state else Qt.Unchecked)
+        self.treeWidget.blockSignals(False)
+        self._update_checked_set_from_tree()
+
     def on_tree_context_menu(self, pos):
         item = self.treeWidget.itemAt(pos)
+        # multi-select context menu
+        if self.treeWidget.selectedItems() and len(self.treeWidget.selectedItems()) > 1:
+            menu = QMenu(self)
+            action = menu.addAction("Select")
+            action.triggered.connect(self.check_selected_items)
+            action = menu.addAction("Clear")
+            action.triggered.connect(self.uncheck_selected_items)
+            menu.exec_(self.treeWidget.mapToGlobal(pos))
+            return
+
         if (
             not item
             or item.childCount() == 0
@@ -1835,5 +1919,13 @@ class HandlerDialog(QDialog):
 
     def closeEvent(self, event):
         if self.pdf_doc is not None:
+            try:
+                if hasattr(self.pdf_doc, "is_closed"):
+                    if not self.pdf_doc.is_closed:
                         self.pdf_doc.close()
+                else:
+                    # Fallback: try/except close
+                    self.pdf_doc.close()
+            except Exception:
+                pass
         event.accept()

abogen/constants.py

@@ -1,4 +1,4 @@
-from utils import get_version
+from abogen.utils import get_version
 
 # Program Information
 PROGRAM_NAME = "abogen"
@@ -8,6 +8,16 @@ PROGRAM_DESCRIPTION = (
 GITHUB_URL = "https://github.com/denizsafak/abogen"
 VERSION = get_version()
 
+# Settings
+CHAPTER_OPTIONS_COUNTDOWN = 30  # Countdown seconds for chapter options
+SUBTITLE_FORMATS = [
+    ("srt", "SRT (standard)"),
+    ("ass_wide", "ASS (wide)"),
+    ("ass_narrow", "ASS (narrow)"),
+    ("ass_centered_wide", "ASS (centered wide)"),
+    ("ass_centered_narrow", "ASS (centered narrow)"),
+]
+
 # Language description mapping
 LANGUAGE_DESCRIPTIONS = {
     "a": "American English",
@@ -21,6 +31,28 @@ LANGUAGE_DESCRIPTIONS = {
     "z": "Mandarin Chinese",
 }
 
+# Supported sound formats
+SUPPORTED_SOUND_FORMATS = [
+    "wav",
+    "mp3",
+    "opus",
+    "m4b",
+    "flac",
+]
+
+# Supported subtitle formats
+SUPPORTED_SUBTITLE_FORMATS = [
+    "srt",
+    "ass",
+]
+
+# Supported input formats
+SUPPORTED_INPUT_FORMATS = [
+    "epub",
+    "pdf",
+    "txt",
+]
+
 # Supported languages for subtitle generation
 # Currently, only 'a (American English)' and 'b (British English)' are supported for subtitle generation.
 # This is because tokens that contain timestamps are not generated for other languages in the Kokoro pipeline.
@@ -102,3 +134,29 @@ SAMPLE_VOICE_TEXTS = {
     "p": "Este é um exemplo da voz selecionada.",
     "z": "这是所选语音的示例。",
 }
+
+COLORS = {
+    "BLUE": "#007dff",
+    "RED": "#c0392b",
+    "ORANGE": "#FFA500",
+    "GREEN": "#42ad4a",
+    "GREEN_BG": "rgba(66, 173, 73, 0.1)",
+    "GREEN_BG_HOVER": "rgba(66, 173, 73, 0.15)",
+    "GREEN_BORDER": "#42ad4a",
+    "BLUE_BG": "rgba(0, 102, 255, 0.05)",
+    "BLUE_BG_HOVER": "rgba(0, 102, 255, 0.1)",
+    "BLUE_BORDER_HOVER": "#6ab0de",
+    "YELLOW_BACKGROUND": "rgba(255, 221, 51, 0.40)",
+    "GREY_BACKGROUND": "rgba(128, 128, 128, 0.15)",
+    "RED_BACKGROUND": "rgba(232, 78, 60, 0.15)",
+    "RED_BG": "rgba(232, 78, 60, 0.10)",
+    "RED_BG_HOVER": "rgba(232, 78, 60, 0.15)",
+    # Theme palette colors
+    "DARK_BG": "#202326",
+    "DARK_BASE": "#141618",
+    "DARK_ALT": "#2c2f31",
+    "DARK_BUTTON": "#292c30",
+    "DARK_DISABLED": "#535353",
+    "LIGHT_BG": "#eff0f1",
+    "LIGHT_DISABLED": "#9a9999",
+}

abogen/hf_tracker.py

@@ -1,16 +1,20 @@
 log_callback = None
 show_warning_signal_emitter = None  # Renamed for clarity
 
+
 def set_log_callback(cb):
     global log_callback
     log_callback = cb
 
+
 def set_show_warning_signal_emitter(emitter):  # Renamed for clarity
     global show_warning_signal_emitter
     show_warning_signal_emitter = emitter
 
+
 from huggingface_hub import hf_hub_download
 
+
 def tracked_hf_hub_download(*args, **kwargs):
     try:
         local_kwargs = dict(kwargs)
@@ -22,7 +26,10 @@ def tracked_hf_hub_download(*args, **kwargs):
         if filename.endswith(".pth"):
             msg = f"\nDownloading model '{filename}' from Hugging Face ({repo_id}). This may take a while. Please wait..."
             if show_warning_signal_emitter:  # Check if the emitter is set
-                show_warning_signal_emitter.emit("Downloading Model", f"Downloading model '{filename}' from Hugging Face repository '{repo_id}'. This may take a while, please wait.")
+                show_warning_signal_emitter.emit(
+                    "Downloading Model",
+                    f"Downloading model '{filename}' from Hugging Face repository '{repo_id}'. This may take a while, please wait.",
+                )
         else:
             msg = f"\nDownloading '{filename}' from Hugging Face ({repo_id}). Please wait..."
         if log_callback:
@@ -32,5 +39,7 @@ def tracked_hf_hub_download(*args, **kwargs):
             print(msg, flush=True)
     return hf_hub_download(*args, **kwargs)
 
+
 import huggingface_hub
+
 huggingface_hub.hf_hub_download = tracked_hf_hub_download

abogen/is_nvidia.py

@@ -1,16 +1,22 @@
 import gpustat
 
+
 def check():
     try:
         stats = gpustat.new_query()
     except Exception:
         return False
 
+    nvidia_keywords = ["nvidia", "rtx", "gtx", "quadro", "tesla", "titan", "mx"]
     for gpu in stats.gpus:
-        print(gpu.name)
-        if 'nvidia' in gpu.name.lower():
+        name = gpu.name.lower()
+        if any(keyword in name for keyword in nvidia_keywords):
             return True
     return False
 
+
 if __name__ == "__main__":
+    stats = gpustat.new_query()
+    for gpu in stats.gpus:
+        print(gpu.name)
     print(check())

abogen/main.py

@@ -1,19 +1,47 @@
+from json import load
 import os
 import sys
 import platform
+import atexit
+import signal
 from PyQt5.QtWidgets import QApplication
 from PyQt5.QtGui import QIcon
+from PyQt5.QtCore import qInstallMessageHandler, QtMsgType
 
 # Add the directory to Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__)))
-from gui import abogen
-from utils import get_resource_path
-from constants import PROGRAM_NAME, VERSION
+
+from abogen.utils import get_resource_path, load_config, prevent_sleep_end
+
+# Set Hugging Face Hub environment variables
+os.environ["HF_HUB_DISABLE_TELEMETRY"] = "1"  # Disable Hugging Face telemetry
+os.environ["HF_HUB_ETAG_TIMEOUT"] = "10"  # Metadata request timeout (seconds)
+os.environ["HF_HUB_DOWNLOAD_TIMEOUT"] = "10"  # File download timeout (seconds)
+os.environ["HF_HUB_DISABLE_SYMLINKS_WARNING"] = "1"  # Disable symlinks warning
+if load_config().get("disable_kokoro_internet", False):
+    print("INFO: Kokoro's internet access is disabled.")
+    os.environ["HF_HUB_OFFLINE"] = "1"  # Disable Hugging Face Hub internet access
+
+from abogen.gui import abogen
+from abogen.constants import PROGRAM_NAME, VERSION
 
 # Set environment variables for AMD ROCm
 os.environ["MIOPEN_FIND_MODE"] = "FAST"
 os.environ["MIOPEN_CONV_PRECISE_ROCM_TUNING"] = "0"
 
+# Reset sleep states
+atexit.register(prevent_sleep_end)
+
+
+# Also handle signals (Ctrl+C, kill, etc.)
+def _cleanup_sleep(signum, frame):
+    prevent_sleep_end()
+    sys.exit(0)
+
+
+signal.signal(signal.SIGINT, _cleanup_sleep)
+signal.signal(signal.SIGTERM, _cleanup_sleep)
+
 # Ensure sys.stdout and sys.stderr are valid in GUI mode
 if sys.stdout is None:
     sys.stdout = open(os.devnull, "w")
@@ -24,6 +52,26 @@ if sys.stderr is None:
 if platform.system() == "Darwin" and platform.processor() == "arm":
     os.environ["PYTORCH_ENABLE_MPS_FALLBACK"] = "1"
 
+
+# Custom message handler to filter out specific Qt warnings
+def qt_message_handler(mode, context, message):
+    if "Wayland does not support QWindow::requestActivate()" in message:
+        return  # Suppress this specific message
+    if "setGrabPopup called with a parent, QtWaylandClient" in message:
+        return
+    if mode == QtMsgType.QtWarningMsg:
+        print(f"Qt Warning: {message}")
+    elif mode == QtMsgType.QtCriticalMsg:
+        print(f"Qt Critical: {message}")
+    elif mode == QtMsgType.QtFatalMsg:
+        print(f"Qt Fatal: {message}")
+    elif mode == QtMsgType.QtInfoMsg:
+        print(f"Qt Info: {message}")
+
+
+# Install the custom message handler
+qInstallMessageHandler(qt_message_handler)
+
 # Set application ID for Windows taskbar icon
 if platform.system() == "Windows":
     import ctypes

abogen/queue_manager_gui.py

@@ -0,0 +1,554 @@
+# a simple window with a list of items in the queue, no checkboxes
+# button to remove an item from the queue
+# button to clear the queue
+
+from PyQt5.QtWidgets import (
+    QDialog,
+    QVBoxLayout,
+    QHBoxLayout,
+    QDialogButtonBox,
+    QPushButton,
+    QListWidget,
+    QListWidgetItem,
+    QFileIconProvider,
+    QLabel,
+    QWidget,
+    QSizePolicy,
+)
+from PyQt5.QtCore import QFileInfo, Qt
+from abogen.constants import COLORS
+from copy import deepcopy
+from PyQt5.QtGui import QFontMetrics
+
+
+class ElidedLabel(QLabel):
+    def __init__(self, text, parent=None):
+        super().__init__(text, parent)
+        self._full_text = text
+        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Preferred)
+
+    def setText(self, text):
+        self._full_text = text
+        super().setText(text)
+        self.update()
+
+    def resizeEvent(self, event):
+        metrics = QFontMetrics(self.font())
+        elided = metrics.elidedText(self._full_text, Qt.ElideRight, self.width())
+        super().setText(elided)
+        super().resizeEvent(event)
+
+    def fullText(self):
+        return self._full_text
+
+
+class QueueListItemWidget(QWidget):
+    def __init__(self, file_name, char_count):
+        super().__init__()
+        layout = QHBoxLayout()
+        layout.setContentsMargins(12, 0, 6, 0)
+        layout.setSpacing(0)
+        import os
+
+        name_label = ElidedLabel(os.path.basename(file_name))
+        char_label = QLabel(f"Chars: {char_count}")
+        char_label.setStyleSheet(f"color: {COLORS['LIGHT_DISABLED']};")
+        char_label.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
+        char_label.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Preferred)
+        layout.addWidget(name_label, 1)
+        layout.addWidget(char_label, 0)
+        self.setLayout(layout)
+
+
+class DroppableQueueListWidget(QListWidget):
+    def __init__(self, parent_dialog):
+        super().__init__()
+        self.parent_dialog = parent_dialog
+        self.setAcceptDrops(True)
+        # Overlay for drag hover
+        self.drag_overlay = QLabel("", self)
+        self.drag_overlay.setAlignment(Qt.AlignCenter)
+        self.drag_overlay.setStyleSheet(
+            f"border:2px dashed {COLORS['BLUE_BORDER_HOVER']}; border-radius:5px; padding:20px; background:{COLORS['BLUE_BG_HOVER']};"
+        )
+        self.drag_overlay.setVisible(False)
+        self.drag_overlay.setAttribute(Qt.WA_TransparentForMouseEvents, True)
+
+    def dragEnterEvent(self, event):
+        if event.mimeData().hasUrls():
+            for url in event.mimeData().urls():
+                if url.isLocalFile() and url.toLocalFile().lower().endswith(".txt"):
+                    self.drag_overlay.resize(self.size())
+                    self.drag_overlay.setVisible(True)
+                    event.acceptProposedAction()
+                    return
+        self.drag_overlay.setVisible(False)
+        event.ignore()
+
+    def dragMoveEvent(self, event):
+        if event.mimeData().hasUrls():
+            for url in event.mimeData().urls():
+                if url.isLocalFile() and url.toLocalFile().lower().endswith(".txt"):
+                    event.acceptProposedAction()
+                    return
+        event.ignore()
+
+    def dragLeaveEvent(self, event):
+        self.drag_overlay.setVisible(False)
+        event.accept()
+
+    def dropEvent(self, event):
+        self.drag_overlay.setVisible(False)
+        if event.mimeData().hasUrls():
+            file_paths = [
+                url.toLocalFile()
+                for url in event.mimeData().urls()
+                if url.isLocalFile() and url.toLocalFile().lower().endswith(".txt")
+            ]
+            if file_paths:
+                self.parent_dialog.add_files_from_paths(file_paths)
+                event.acceptProposedAction()
+            else:
+                event.ignore()
+        else:
+            event.ignore()
+
+    def resizeEvent(self, event):
+        super().resizeEvent(event)
+        if hasattr(self, "drag_overlay"):
+            self.drag_overlay.resize(self.size())
+
+
+class QueueManager(QDialog):
+    def __init__(self, parent, queue: list, title="Queue Manager", size=(600, 700)):
+        super().__init__()
+        self.queue = queue
+        self._original_queue = deepcopy(
+            queue
+        )  # Store a deep copy of the original queue
+        self.parent = parent
+        layout = QVBoxLayout()
+        layout.setContentsMargins(15, 15, 15, 15)  # set main layout margins
+        layout.setSpacing(12)  # set spacing between widgets in main layout
+        # list of queued items
+        self.listwidget = DroppableQueueListWidget(self)
+        self.listwidget.setSelectionMode(QListWidget.ExtendedSelection)
+        self.listwidget.setAlternatingRowColors(True)
+        self.listwidget.setContextMenuPolicy(Qt.CustomContextMenu)
+        self.listwidget.customContextMenuRequested.connect(self.show_context_menu)
+        # Add informative instructions at the top
+        instructions = QLabel(
+            "<h2>How Queue Works?</h2>"
+            "You can add text files (.txt) directly using the '<b>Add files</b>' button below. "
+            "To add PDF or EPUB files, use the input box in the main window and click the <b>'Add to Queue'</b> button. "
+            "Each file in the queue keeps the configuration settings active when it was added. "
+            "Changing the main window configuration afterward <b>does not</b> affect files already in the queue. "
+            "You can view each file's configuration by hovering over them."
+        )
+        instructions.setAlignment(Qt.AlignLeft)
+        instructions.setWordWrap(True)
+        instructions.setStyleSheet("margin-bottom: 8px;")
+        layout.addWidget(instructions)
+        # Overlay label for empty queue
+        self.empty_overlay = QLabel(
+            "Drag and drop your text files here or use the 'Add files' button.",
+            self.listwidget,
+        )
+        self.empty_overlay.setAlignment(Qt.AlignCenter)
+        self.empty_overlay.setStyleSheet(
+            f"color: {COLORS['LIGHT_DISABLED']}; background: transparent; padding: 20px;"
+        )
+        self.empty_overlay.setWordWrap(True)
+        self.empty_overlay.setAttribute(Qt.WA_TransparentForMouseEvents, True)
+        self.empty_overlay.hide()
+        # add queue items to the list
+        self.process_queue()
+
+        button_row = QHBoxLayout()
+        button_row.setContentsMargins(0, 0, 0, 0)  # optional: no margins for button row
+        button_row.setSpacing(7)  # set spacing between buttons
+        # Add files button
+        add_files_button = QPushButton("Add files")
+        add_files_button.setFixedHeight(40)
+        add_files_button.clicked.connect(self.add_more_files)
+        button_row.addWidget(add_files_button)
+
+        # Remove button
+        self.remove_button = QPushButton("Remove selected")
+        self.remove_button.setFixedHeight(40)
+        self.remove_button.clicked.connect(self.remove_item)
+        button_row.addWidget(self.remove_button)
+
+        # Clear button
+        self.clear_button = QPushButton("Clear Queue")
+        self.clear_button.setFixedHeight(40)
+        self.clear_button.clicked.connect(self.clear_queue)
+        button_row.addWidget(self.clear_button)
+
+        layout.addLayout(button_row)
+        layout.addWidget(self.listwidget)
+
+        # Connect selection change to update button state
+        self.listwidget.currentItemChanged.connect(self.update_button_states)
+        self.listwidget.itemSelectionChanged.connect(self.update_button_states)
+
+        buttons = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel, self)
+        buttons.accepted.connect(self.accept)
+        buttons.rejected.connect(self.reject)
+
+        layout.addWidget(buttons)
+
+        self.setLayout(layout)
+
+        self.setWindowTitle(title)
+        self.resize(*size)
+
+        self.update_button_states()
+
+    def process_queue(self):
+        """Process the queue items."""
+        self.listwidget.clear()
+        if not self.queue:
+            self.empty_overlay.resize(self.listwidget.size())
+            self.empty_overlay.show()
+            self.update_button_states()
+            return
+        else:
+            self.empty_overlay.hide()
+        icon_provider = QFileIconProvider()
+        for item in self.queue:
+            # Only show the file name, not the full path
+            file_name = item.file_name
+            display_name = file_name
+            import os
+
+            if os.path.sep in file_name:
+                display_name = os.path.basename(file_name)
+            # Get icon for the file
+            icon = icon_provider.icon(QFileInfo(file_name))
+            list_item = QListWidgetItem()
+            # Set tooltip with detailed info
+            output_folder = getattr(item, "output_folder", "")
+            tooltip = (
+                f"<b>Path:</b> {file_name}<br>"
+                f"<b>Language:</b> {getattr(item, 'lang_code', '')}<br>"
+                f"<b>Speed:</b> {getattr(item, 'speed', '')}<br>"
+                f"<b>Voice:</b> {getattr(item, 'voice', '')}<br>"
+                f"<b>Save Option:</b> {getattr(item, 'save_option', '')}<br>"
+            )
+            if output_folder not in (None, "", "None"):
+                tooltip += f"<b>Output Folder:</b> {output_folder}<br>"
+            tooltip += (
+                f"<b>Subtitle Mode:</b> {getattr(item, 'subtitle_mode', '')}<br>"
+                f"<b>Output Format:</b> {getattr(item, 'output_format', '')}<br>"
+                f"<b>Characters:</b> {getattr(item, 'total_char_count', '')}<br>"
+                f"<b>Replace Single Newlines:</b> {getattr(item, 'replace_single_newlines', False)}"
+            )
+            list_item.setToolTip(tooltip)
+            list_item.setIcon(icon)
+            list_item.setData(Qt.UserRole, file_name)
+            # Use custom widget for display
+            char_count = getattr(item, "total_char_count", 0)
+            widget = QueueListItemWidget(file_name, char_count)
+            self.listwidget.addItem(list_item)
+            self.listwidget.setItemWidget(list_item, widget)
+        self.update_button_states()
+
+    def remove_item(self):
+        items = self.listwidget.selectedItems()
+        if not items:
+            return
+        from PyQt5.QtWidgets import QMessageBox
+
+        # Remove by index to ensure correct mapping
+        rows = sorted([self.listwidget.row(item) for item in items], reverse=True)
+        # Warn user if removing multiple files
+        if len(rows) > 1:
+            reply = QMessageBox.question(
+                self,
+                "Confirm Remove",
+                f"Are you sure you want to remove {len(rows)} selected items from the queue?",
+                QMessageBox.Yes | QMessageBox.No,
+                QMessageBox.No,
+            )
+            if reply != QMessageBox.Yes:
+                return
+        for row in rows:
+            if 0 <= row < len(self.queue):
+                del self.queue[row]
+        self.process_queue()
+        self.update_button_states()
+
+    def clear_queue(self):
+        from PyQt5.QtWidgets import QMessageBox
+
+        if len(self.queue) > 1:
+            reply = QMessageBox.question(
+                self,
+                "Confirm Clear Queue",
+                f"Are you sure you want to clear {len(self.queue)} items from the queue?",
+                QMessageBox.Yes | QMessageBox.No,
+                QMessageBox.No,
+            )
+            if reply != QMessageBox.Yes:
+                return
+        self.queue.clear()
+        self.listwidget.clear()
+        self.empty_overlay.resize(
+            self.listwidget.size()
+        )  # Ensure overlay is sized correctly
+        self.empty_overlay.show()  # Show the overlay when queue is empty
+        self.update_button_states()
+
+    def get_queue(self):
+        return self.queue
+
+    def get_current_attributes(self):
+        # Fetch current attribute values from the parent abogen GUI
+        attrs = {}
+        parent = self.parent
+        if parent is not None:
+            # lang_code: use parent's get_voice_formula and get_selected_lang
+            if hasattr(parent, "get_voice_formula") and hasattr(
+                parent, "get_selected_lang"
+            ):
+                voice_formula = parent.get_voice_formula()
+                attrs["lang_code"] = parent.get_selected_lang(voice_formula)
+                attrs["voice"] = voice_formula
+            else:
+                attrs["lang_code"] = getattr(parent, "selected_lang", "")
+                attrs["voice"] = getattr(parent, "selected_voice", "")
+            # speed
+            if hasattr(parent, "speed_slider"):
+                attrs["speed"] = parent.speed_slider.value() / 100.0
+            else:
+                attrs["speed"] = getattr(parent, "speed", 1.0)
+            # save_option
+            attrs["save_option"] = getattr(parent, "save_option", "")
+            # output_folder
+            attrs["output_folder"] = getattr(parent, "selected_output_folder", "")
+            # subtitle_mode
+            if hasattr(parent, "get_actual_subtitle_mode"):
+                attrs["subtitle_mode"] = parent.get_actual_subtitle_mode()
+            else:
+                attrs["subtitle_mode"] = getattr(parent, "subtitle_mode", "")
+            # output_format
+            attrs["output_format"] = getattr(parent, "selected_format", "")
+            # total_char_count
+            attrs["total_char_count"] = getattr(parent, "char_count", "")
+            # replace_single_newlines
+            attrs["replace_single_newlines"] = getattr(
+                parent, "replace_single_newlines", False
+            )
+        else:
+            # fallback: empty values
+            attrs = {
+                k: ""
+                for k in [
+                    "lang_code",
+                    "speed",
+                    "voice",
+                    "save_option",
+                    "output_folder",
+                    "subtitle_mode",
+                    "output_format",
+                    "total_char_count",
+                    "replace_single_newlines",
+                ]
+            }
+        return attrs
+
+    def add_files_from_paths(self, file_paths):
+        from abogen.utils import calculate_text_length
+        from PyQt5.QtWidgets import QMessageBox
+        import os
+
+        current_attrs = self.get_current_attributes()
+        duplicates = []
+        for file_path in file_paths:
+
+            class QueueItem:
+                pass
+
+            item = QueueItem()
+            item.file_name = file_path
+            for attr, value in current_attrs.items():
+                setattr(item, attr, value)
+            # Read file content and calculate total_char_count using calculate_text_length
+            try:
+                with open(file_path, "r", encoding="utf-8", errors="ignore") as f:
+                    file_content = f.read()
+                item.total_char_count = calculate_text_length(file_content)
+            except Exception:
+                item.total_char_count = 0
+            # Prevent adding duplicate items to the queue (check all attributes)
+            is_duplicate = False
+            for queued_item in self.queue:
+                if (
+                    getattr(queued_item, "file_name", None)
+                    == getattr(item, "file_name", None)
+                    and getattr(queued_item, "lang_code", None)
+                    == getattr(item, "lang_code", None)
+                    and getattr(queued_item, "speed", None)
+                    == getattr(item, "speed", None)
+                    and getattr(queued_item, "voice", None)
+                    == getattr(item, "voice", None)
+                    and getattr(queued_item, "save_option", None)
+                    == getattr(item, "save_option", None)
+                    and getattr(queued_item, "output_folder", None)
+                    == getattr(item, "output_folder", None)
+                    and getattr(queued_item, "subtitle_mode", None)
+                    == getattr(item, "subtitle_mode", None)
+                    and getattr(queued_item, "output_format", None)
+                    == getattr(item, "output_format", None)
+                    and getattr(queued_item, "total_char_count", None)
+                    == getattr(item, "total_char_count", None)
+                    and getattr(queued_item, "replace_single_newlines", False)
+                    == getattr(item, "replace_single_newlines", False)
+                ):
+                    is_duplicate = True
+                    break
+            if is_duplicate:
+                duplicates.append(os.path.basename(file_path))
+                continue
+            self.queue.append(item)
+        if duplicates:
+            QMessageBox.warning(
+                self,
+                "Duplicate Item(s)",
+                f"Skipping {len(duplicates)} file(s) with the same attributes, already in the queue.",
+            )
+        self.process_queue()
+        self.update_button_states()
+
+    def add_more_files(self):
+        from PyQt5.QtWidgets import QFileDialog
+        from abogen.utils import calculate_text_length  # import the function
+
+        # Only allow .txt files
+        files, _ = QFileDialog.getOpenFileNames(
+            self, "Select .txt files", "", "Text Files (*.txt)"
+        )
+        if not files:
+            return
+        self.add_files_from_paths(files)
+
+    def resizeEvent(self, event):
+        super().resizeEvent(event)
+        if hasattr(self, "empty_overlay"):
+            self.empty_overlay.resize(self.listwidget.size())
+
+    def update_button_states(self):
+        # Enable Remove if at least one item is selected, else disable
+        if hasattr(self, "remove_button"):
+            selected_count = len(self.listwidget.selectedItems())
+            self.remove_button.setEnabled(selected_count > 0)
+            if selected_count > 1:
+                self.remove_button.setText(f"Remove selected ({selected_count})")
+            else:
+                self.remove_button.setText("Remove selected")
+        # Disable Clear if queue is empty
+        if hasattr(self, "clear_button"):
+            self.clear_button.setEnabled(bool(self.queue))
+
+    def show_context_menu(self, pos):
+        from PyQt5.QtWidgets import QMenu, QAction
+        from PyQt5.QtGui import QDesktopServices
+        from PyQt5.QtCore import QUrl
+        import os
+
+        global_pos = self.listwidget.viewport().mapToGlobal(pos)
+        selected_items = self.listwidget.selectedItems()
+        menu = QMenu(self)
+        if len(selected_items) == 1:
+            # Add Remove action
+            remove_action = QAction("Remove this item", self)
+            remove_action.triggered.connect(self.remove_item)
+            menu.addAction(remove_action)
+
+            # Add Open file action
+            open_file_action = QAction("Open file", self)
+
+            def open_file():
+                from PyQt5.QtWidgets import QMessageBox
+
+                item = selected_items[0]
+                file_path = item.data(Qt.UserRole)
+                for q in self.queue:
+                    if q.file_name == file_path:
+                        if not os.path.exists(q.file_name):
+                            QMessageBox.warning(
+                                self, "File Not Found", f"The file does not exist."
+                            )
+                            return
+                        QDesktopServices.openUrl(QUrl.fromLocalFile(q.file_name))
+                        break
+
+            open_file_action.triggered.connect(open_file)
+            menu.addAction(open_file_action)
+
+            # Add Go to folder action
+            go_to_folder_action = QAction("Go to folder", self)
+
+            def go_to_folder():
+                from PyQt5.QtWidgets import QMessageBox
+
+                item = selected_items[0]
+                file_path = item.data(Qt.UserRole)
+                for q in self.queue:
+                    if q.file_name == file_path:
+                        if not os.path.exists(q.file_name):
+                            QMessageBox.warning(
+                                self, "File Not Found", f"The file does not exist."
+                            )
+                            return
+                        folder = os.path.dirname(q.file_name)
+                        if os.path.exists(folder):
+                            QDesktopServices.openUrl(QUrl.fromLocalFile(folder))
+                        break
+
+            go_to_folder_action.triggered.connect(go_to_folder)
+            menu.addAction(go_to_folder_action)
+
+        elif len(selected_items) > 1:
+            remove_action = QAction(f"Remove selected ({len(selected_items)})", self)
+            remove_action.triggered.connect(self.remove_item)
+            menu.addAction(remove_action)
+        # Always add Clear Queue
+        clear_action = QAction("Clear Queue", self)
+        clear_action.triggered.connect(self.clear_queue)
+        menu.addAction(clear_action)
+        menu.exec_(global_pos)
+
+    def accept(self):
+        # Accept: keep changes
+        super().accept()
+
+    def reject(self):
+        # Cancel: restore original queue
+        from PyQt5.QtWidgets import QMessageBox
+
+        # Warn if user changed a lot (e.g., more than 1 items difference)
+        original_count = len(self._original_queue)
+        current_count = len(self.queue)
+        if abs(original_count - current_count) > 1:
+            reply = QMessageBox.question(
+                self,
+                "Confirm Cancel",
+                f"Are you sure you want to cancel and discard all changes?",
+                QMessageBox.Yes | QMessageBox.No,
+                QMessageBox.No,
+            )
+            if reply != QMessageBox.Yes:
+                return
+        self.queue.clear()
+        self.queue.extend(deepcopy(self._original_queue))
+        super().reject()
+
+    def keyPressEvent(self, event):
+        from PyQt5.QtCore import Qt
+
+        if event.key() == Qt.Key_Delete:
+            self.remove_item()
+        else:
+            super().keyPressEvent(event)

abogen/queued_item.py

@@ -0,0 +1,16 @@
+# represents a queued item - book, chapters, voice, etc.
+from dataclasses import dataclass
+
+
+@dataclass
+class QueuedItem:
+    file_name: str
+    lang_code: str
+    speed: float
+    voice: str
+    save_option: str
+    output_folder: str
+    subtitle_mode: str
+    output_format: str
+    total_char_count: int
+    replace_single_newlines: bool = False

abogen/utils.py

@@ -7,8 +7,6 @@ import subprocess
 import re
 from threading import Thread
 
-# suppress warnings and disable HF hub symlink warnings
-os.environ["HF_HUB_DISABLE_SYMLINKS_WARNING"] = "1"
 warnings.filterwarnings("ignore")
 
 
@@ -76,15 +74,32 @@ def get_user_config_path():
         if os.path.exists(custom_dir):
             config_dir = custom_dir
         else:
-            config_dir = user_config_dir("abogen", appauthor=False, roaming=True)
+            config_dir = user_config_dir(
+                "abogen", appauthor=False, roaming=True, ensure_exists=True
+            )
     else:
         # Windows and fallback case
-        config_dir = user_config_dir("abogen", appauthor=False, roaming=True)
+        config_dir = user_config_dir(
+            "abogen", appauthor=False, roaming=True, ensure_exists=True
+        )
 
-    os.makedirs(config_dir, exist_ok=True)
     return os.path.join(config_dir, "config.json")
 
 
+# Define cache path
+def get_user_cache_path(folder=None):
+    from platformdirs import user_cache_dir
+
+    cache_dir = user_cache_dir(
+        "abogen", appauthor=False, opinion=True, ensure_exists=True
+    )
+    if folder:
+        cache_dir = os.path.join(cache_dir, folder)
+        # Ensure the directory exists
+        os.makedirs(cache_dir, exist_ok=True)
+    return cache_dir
+
+
 _sleep_procs = {"Darwin": None, "Linux": None}  # Store sleep prevention processes
 
 
@@ -105,15 +120,17 @@ def clean_text(text, *args, **kwargs):
 
 default_encoding = sys.getfilesystemencoding()
 
+
 def create_process(cmd, stdin=None, text=True, capture_output=False):
     import logging
+
     logger = logging.getLogger(__name__)
 
     # Configure root logger to output to console if not already configured
     root = logging.getLogger()
     if not root.handlers:
         handler = logging.StreamHandler(sys.stdout)
-        formatter = logging.Formatter('%(message)s')
+        formatter = logging.Formatter("%(message)s")
         handler.setFormatter(formatter)
         root.addHandler(handler)
         root.setLevel(logging.INFO)
@@ -156,6 +173,7 @@ def create_process(cmd, stdin=None, text=True, capture_output=False):
 
     # Stream output to console in real-time if not capturing
     if proc.stdout and not capture_output:
+
         def _stream_output(stream):
             if text:
                 # For text mode, read character by character for real-time output
@@ -174,7 +192,9 @@ def create_process(cmd, stdin=None, text=True, capture_output=False):
                         break
                     try:
                         # Try to decode binary data for display
-                        sys.stdout.write(chunk.decode(default_encoding, errors='replace'))
+                        sys.stdout.write(
+                            chunk.decode(default_encoding, errors="replace")
+                        )
                         sys.stdout.flush()
                     except Exception:
                         pass
@@ -217,40 +237,63 @@ def calculate_text_length(text):
 
 
 def get_gpu_acceleration(enabled):
+    try:
+        import torch
         from torch.cuda import is_available
 
         if not enabled:
             return "CUDA GPU available but using CPU.", False
-
         if is_available():
             return "CUDA GPU available and enabled.", True
-    return "CUDA GPU is not available. Using CPU.", False
+        # Gather more diagnostic info if CUDA is not available
+        try:
+            cuda_devices = torch.cuda.device_count()
+            cuda_error = (
+                torch.cuda.get_device_name(0)
+                if cuda_devices > 0
+                else "No devices found"
+            )
+        except Exception as e:
+            cuda_error = str(e)
+        return f"CUDA GPU is not available. Using CPU. ({cuda_error})", False
+    except Exception as e:
+        return f"Error checking CUDA GPU: {e}", False
 
 
 def prevent_sleep_start():
+    from abogen.constants import PROGRAM_NAME
+
     system = platform.system()
     if system == "Windows":
         import ctypes
+
         ctypes.windll.kernel32.SetThreadExecutionState(
             0x80000000 | 0x00000001 | 0x00000040
         )
     elif system == "Darwin":
         _sleep_procs["Darwin"] = create_process(["caffeinate"])
     elif system == "Linux":
-        # use a sleep that never exits so inhibition stays active
-        _sleep_procs["Linux"] = create_process([
+        # Add program name and reason for inhibition
+        program_name = PROGRAM_NAME
+        reason = "Prevent sleep during abogen process"
+        _sleep_procs["Linux"] = create_process(
+            [
                 "systemd-inhibit",
-            "--what=handle-lid-switch:sleep",
+                f"--who={program_name}",
+                f"--why={reason}",
+                "--what=sleep",
                 "--mode=block",
                 "sleep",
                 "infinity",
-        ])
+            ]
+        )
 
 
 def prevent_sleep_end():
     system = platform.system()
     if system == "Windows":
         import ctypes
+
         ctypes.windll.kernel32.SetThreadExecutionState(0x80000000)  # ES_CONTINUOUS
     elif system in ("Darwin", "Linux") and _sleep_procs[system]:
         try:

abogen/voice_formula_gui.py

@@ -24,16 +24,20 @@ from PyQt5.QtWidgets import (
     QMenu,
     QAction,
     QComboBox,
+    QApplication,
 )
 from PyQt5.QtCore import Qt, QTimer, QPoint, QRect, QSize
-from PyQt5.QtGui import QPixmap, QIcon, QColor
-from constants import (
+from PyQt5.QtGui import QPixmap, QIcon
+from abogen.constants import (
     VOICES_INTERNAL,
     SUPPORTED_LANGUAGES_FOR_SUBTITLE_GENERATION,
     LANGUAGE_DESCRIPTIONS,
+    COLORS,
 )
-from utils import get_resource_path
-from voice_profiles import (
+import re
+import platform
+from abogen.utils import get_resource_path
+from abogen.voice_profiles import (
     load_profiles,
     save_profiles,
     delete_profile,
@@ -221,6 +225,21 @@ class VoiceMixer(QWidget):
         self.slider.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Expanding)
         self.slider.setFixedWidth(SLIDER_WIDTH)
 
+        # Fix slider in Windows
+        if platform.system() == "Windows":
+            appstyle = QApplication.instance().style().objectName().lower()
+            if appstyle != "windowsvista":
+                # Set custom groove color for disabled state using COLORS["GREY_BACKGROUND"]
+                self.slider.setStyleSheet(
+                    f"""
+                    QSlider::groove:vertical:disabled {{
+                        background: {COLORS.get("GREY_BACKGROUND")};
+                        width: 4px;
+                        border-radius: 4px;
+                    }}
+                """
+                )
+
         # Connect controls
         self.slider.valueChanged.connect(lambda val: self.spin_box.setValue(val / 100))
         self.spin_box.valueChanged.connect(
@@ -271,9 +290,9 @@ class HoverLabel(QLabel):
         self.delete_button = QPushButton("×", self)
         self.delete_button.setFixedSize(16, 16)
         self.delete_button.setStyleSheet(
-            """
-            QPushButton {
-                background-color: #ff5555;
+            f"""
+            QPushButton {{
+                background-color: {COLORS.get("RED")};
                 color: white;
                 border-radius: 7px;
                 font-weight: bold;
@@ -281,10 +300,10 @@ class HoverLabel(QLabel):
                 border: none;
                 padding: 0px;
                 margin: 0px;
-            }
-            QPushButton:hover {
+            }}
+            QPushButton:hover {{
                 background-color: red;
-            }
+            }}
             """
         )
         # Make sure the entire button is clickable, not just the text
@@ -313,7 +332,9 @@ class VoiceFormulaDialog(QDialog):
         self._original_mixed_voice_state = None
         if parent is not None:
             self._original_profile_name = getattr(parent, "selected_profile_name", None)
-            self._original_mixed_voice_state = getattr(parent, "mixed_voice_state", None)
+            self._original_mixed_voice_state = getattr(
+                parent, "mixed_voice_state", None
+            )
         profiles = load_profiles()
         self._virtual_new_profile = False
         if not profiles:
@@ -350,6 +371,11 @@ class VoiceFormulaDialog(QDialog):
         profile_layout.addLayout(header_layout)
         # Profile list
         self.profile_list = QListWidget()
+        self.profile_list.setSelectionMode(QListWidget.SingleSelection)
+        self.profile_list.setSelectionBehavior(QListWidget.SelectRows)
+        self.profile_list.setStyleSheet(
+            "QListWidget::item:selected { background: palette(highlight); color: palette(highlighted-text); }"
+        )
         icon = QIcon(get_resource_path("abogen.assets", "profile.png"))
         if self._virtual_new_profile:
             item = QListWidgetItem(icon, "New profile")
@@ -738,7 +764,7 @@ class VoiceFormulaDialog(QDialog):
                 percentage = weight / total * 100
                 # Make the voice name bold and include percentage
                 voice_label = HoverLabel(
-                    f'<b><span style="color:#007dff">{name}: {percentage:.1f}%</span></b>',
+                    f'<b><span style="color:{COLORS.get("BLUE")}">{name}: {percentage:.1f}%</span></b>',
                     name,
                 )
                 voice_label.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
@@ -953,6 +979,19 @@ class VoiceFormulaDialog(QDialog):
             return
         super().closeEvent(event)
 
+    def _parse_rgba_to_qcolor(self, rgba_str):
+        from PyQt5.QtCore import Qt
+        from PyQt5.QtGui import QColor
+
+        """Helper to convert 'rgba(R,G,B,A_float)' string to QColor."""
+        match = re.match(r"rgba\((\d+),\s*(\d+),\s*(\d+),\s*([\d.]+)\)", rgba_str)
+        if match:
+            r, g, b = int(match.group(1)), int(match.group(2)), int(match.group(3))
+            a_float = float(match.group(4))
+            a_int = int(a_float * 255)
+            return QColor(r, g, b, a_int)
+        return Qt.GlobalColor.transparent
+
     def mark_profile_modified(self):
         item = self.profile_list.currentItem()
         if item and not item.text().startswith("*"):
@@ -1052,7 +1091,7 @@ class VoiceFormulaDialog(QDialog):
             self, "Import Profiles", "", "JSON Files (*.json)"
         )
         if path:
-            from voice_profiles import load_profiles, save_profiles
+            from abogen.voice_profiles import load_profiles, save_profiles
 
             # Try to read the file and count profiles
             try:
@@ -1339,23 +1378,23 @@ class VoiceFormulaDialog(QDialog):
                 self.profile_list.setItemWidget(item, widget)
 
     def update_profile_list_colors(self):
+        from PyQt5.QtCore import Qt
+
         profiles = load_profiles()
         for i in range(self.profile_list.count()):
             item = self.profile_list.item(i)
             name = item.text().lstrip("*")
             if self._virtual_new_profile and name == "New profile":
-                color = QColor("#ffff00")  # yellow
-                color.setAlpha(64)  # Set transparency
-                item.setBackground(color)
+                color = self._parse_rgba_to_qcolor(COLORS.get("YELLOW_BACKGROUND"))
+                item.setData(Qt.BackgroundRole, color)
             elif item.text().startswith("*"):
-                color = QColor("#ffff00")  # yellow
-                color.setAlpha(64)  # Set transparency
-                item.setBackground(color)
+                color = self._parse_rgba_to_qcolor(COLORS.get("YELLOW_BACKGROUND"))
+                item.setData(Qt.BackgroundRole, color)
             else:
-                item.setBackground(self.profile_list.palette().base().color()) # Use default list item background
-
+                item.setData(
+                    Qt.BackgroundRole, self.profile_list.palette().base().color()
+                )
                 weights = profiles.get(name, {}).get("voices", [])
-                # Defensive: only sum if weights is a list of (voice, weight) pairs
                 total = 0
                 if isinstance(weights, list):
                     for entry in weights:
@@ -1366,9 +1405,8 @@ class VoiceFormulaDialog(QDialog):
                         ):
                             total += entry[1]
                 if total == 0:
-                    color = QColor("#ff0000")  # red
-                    color.setAlpha(64)  # Set transparency
-                    item.setBackground(color)
+                    color = self._parse_rgba_to_qcolor(COLORS.get("RED_BACKGROUND"))
+                    item.setData(Qt.BackgroundRole, color)
         self.update_profile_save_buttons()
 
     def preview_current_mix(self):

abogen/voice_formulas.py

@@ -1,5 +1,5 @@
 import re
-from constants import VOICES_INTERNAL
+from abogen.constants import VOICES_INTERNAL
 
 
 # Calls parsing and loads the voice to gpu or cpu

abogen/voice_profiles.py

@@ -1,6 +1,6 @@
 import os
 import json
-from utils import get_user_config_path
+from abogen.utils import get_user_config_path
 
 
 def _get_profiles_path():

demo/README.md

@@ -23,7 +23,7 @@ brew install ffmpeg
 sudo apt install ffmpeg
 ```
 
-### Create the Video (.webm)
+## Create the Video (.webm)
 
 Run this FFmpeg command to create the tiny video:
 

pyproject.toml

@@ -15,6 +15,7 @@ keywords = ["audiobook", "epub", "pdf", "text-to-speech", "subtitle", "tts", "ko
 dependencies = [
     "PyQt5>=5.15.11",
     "kokoro>=0.9.4",
+    "misaki[zh]>=0.9.4",
     "ebooklib>=0.19",
     "beautifulsoup4>=4.13.4",
     "PyMuPDF>=1.25.5",