README.md

# SagoImageBrowser A Qt6-based image browser application for viewing and managing image collections. ## Features - Browse images in a directory tree with file system navigation - Multi-threaded, cached thumbnail generation for a responsive UI - Single image view mode with keyboard-driven zoom, pan, fit and navigation - Fullscreen viewing - EXIF/IPTC metadata panel (camera, exposure, ISO, focal length, dimensions, …) - Geo location with a clickable OpenStreetMap link when an image is geotagged - Edit image captions (written to the IPTC Caption-Abstract tag) - Lossless 90° rotation (updates the EXIF orientation tag, pixel data untouched) - Move images to trash and delete files - Right-click context menus (including copying file paths), also in fullscreen - Configurable keyboard shortcuts - Preferences for background color, thumbnail cache size, dock locking and layout - Path entry field with autocomplete - Translations (Danish included) - Supports every image format provided by the installed Qt image plugins ## Requirements - C++17 or later - CMake 3.21+ - Qt6 (Widgets and LinguistTools components) - Git and a network connection — Exiv2 (v0.28.8) is fetched and statically linked at configure time via CMake `FetchContent` ## Building ### Prerequisites Install Qt6 development files: ```bash # On Ubuntu/Debian sudo apt-get install qt6-base-dev qt6-tools-dev # On macOS with Homebrew brew install qt6 ``` ### Build Steps ```bash cd SagoImageBrowser cmake -B build cmake --build build ``` The compiled executable will be at `./build/SagoImageBrowser`. ### Installing ```bash cmake --install build ``` This installs the executable, a `.desktop` entry and the application icon. ## Running ```bash ./build/SagoImageBrowser [path] ``` An optional directory or image path can be passed on the command line. ## Tests A small test for the EXIF reader is built alongside the application: ```bash ./build/test_exifreader ``` ## Project Structure ``` src/ ├── main.cpp # Application entry point ├── mainwindow.h/cpp # Main application window ├── imagemodel.h/cpp # Image list/grid data model ├── fsdirmodel.h/cpp # Directory tree model ├── imageviewwidget.h/cpp # Single-image display widget (zoom/pan) ├── thumbnailworker.h/cpp # Background thumbnail generation ├── thumbnailcache.h/cpp # Thumbnail caching ├── thumbnaildelegate.h/cpp # Thumbnail rendering in the view ├── exifreader.h/cpp # EXIF/IPTC reading, caption writing, rotation ├── preferencesdialog.h/cpp # Preferences dialog ├── shortcutmanager.h/cpp # Configurable keyboard shortcuts └── pathcompletermodel.h/cpp # Autocomplete for the path field test/ # Unit tests translations/ # Qt translation files (.ts) extra/ # Desktop entry and icons CMakeLists.txt # Build configuration ``` ## License MIT Expat License Copyright (c) 2026 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.