Lively Wallpaper

What's new in this version:

Grid Pause Algorithm:
- Replaced the default foreground window based pause detection with a grid based screen coverage algorithm - the screen is now divided into a grid (tiles), and intersection calculation is used to check if windows are visually covering the display

Solves several edge cases where the previous logic failed:
- Multiple windows (example: side by side), now correctly trigger pause
- Works even if a background window, not the foreground one, is covering the wallpaper
- Each display can now pause independently in per-display mode
- Reliable desktop detection
- To see the detection in real time, right-click the Lively tray icon and choose Report Bug ? Grid Detection Overlay
- Now when duplicate layout is selected all wallpapers are paused
- New All Process algorithm available in settings - scans all windows and check for fullscreen
- Note: Some performance related settings will be reset to default after this update

Animated WebP Support:
- Added support for animated WebP format
- WebP files are converted to WebM during import
- This is an initial experiment, planning on adding conversion support for more formats in the future
- Wallpaper customization is supported

Language Enhancements:
- Added custom language selection - preferred language can be selected from settings
- [Experimental] Language change applies instantly without requiring an app restart

Added localization support for:
- LivelyProperties (wallpaper customization.)
- LivelyInfo (wallpaper metadata.)

Wallpaper Enhancements:
- Improved wallpaper import system: now copies wallpaper file(s) to the wallpaper library location instead of just referencing the original path
- Previously imported wallpapers remain unaffected - to migrate them, use the Edit option in library
- For wallpaper projects with multiple files, a confirmation dialog now shows the expected folder structure before importing
- From this version onward, newly imported wallpapers no longer depend on the original file - you can safely delete it without causing file not found errors
- Faster bulk imports: multiple media wallpapers are now imported faster by utilizing system thumbnail cache

WebView2 (Default):
- WebView2 is now the default browser engine for website wallpapers
- Since WebView2 comes pre-installed with Windows, the app no longer needs to bundle a browser engine, reducing the install size by ~50%
- Now website wallpapers supports H.264 media playback out of the box
- New debug DevTools - opens in a separate window
- Improved handling of media elements - when a wallpaper is paused, any playing video or audio elements on the page are also paused automatically
- Previous CefSharp player is provided as additional download

Screensaver Enhancements:
- Fade-in animation when screensaver starts, any user input during this phase cancels activation. #273
- Introduced a grace period: if input is received shortly after screensaver starts, system lock is skipped (when "lock on resume" is enabled.) #280
- Screensaver settings have been reorganized and are now part of the main settings page for easier access

Video Enhancements:
- Upgraded to MPV player’s new gpu-next video backend
- Better performance and improved video quality
- Enhances color accuracy and HDR passthrough support in settings

Windows 11 24H2 Compatibility:
- Core components were fully rewritten to adapt to platform changes introduced in Windows 11 24H2
- Fixed a critical issue where wallpapers could enter a restart loop on this version of Windows
- Special thanks to Microsoft engineers and community members who reached out and helped

Fixed:
- Fixed unwanted border appearing on top-left of video wallpapers
- If you previously added border=no to mpv.conf as a workaround, it's recommended to remove it now
- Fixed website login not persisting across wallpaper restarts, requires disk cache to be enabled in settings
- Fixed website wallpaper having wrong display scale
- Fixed screensaver plugin required message not updating
- Fixed missing wallpaper art in screensaver dialog when preview file is absent
- Fixed screensaver stopping early with "lock on resume" enabled
- Fixed on-screen controls showing in video screensavers
- Fixed local file wallpapers not loading in WebView2
- Fixed wallpaper remains paused in some instances even when on desktop
- Fixed "Restore Default" button not visible when LivelyProperty is empty
- Fixed input issues in newer CefSharp player versions
- Fixed file picker allowing multiple selections where only one was expected
- Fixed screenshot capture, theme and desktop picture not working in WebView2 player
- Fixed webpage wallpaper briefly ignoring mute setting on startup
- Fixed incorrect layout in screensaver dialog when using mirror mode
- Fixed unnecessary error messages on first startup if config files are missing
- Fixed customize tray-menu not fitting on screen in some system configurations
- Fixed FileNotFound exception when using absolute path URL wallpapers
- Fixed MPV player screenshot feature crashing on some systems
- Fixed file save dialog not opening when app is run elevated
- Fixed missing app icon in WebView2 wallpaper player
- Fixed video not looping in VLC player

Enhancements:
- Improved MPV error messages for file loading and unknown arguments
- Added system tray tooltip for wallpaper errors when UI is closed
- Optimized page navigation for smoother and faster UI performance
- Website wallpapers now follow application theme (dark/light.
- Website wallpapers now show dark color instead of white while loading
- Made the screensaver setup message dismissible
- Reload command-line control now supports optional monitor argument
- Show documentatio
- Volume command-line control now supports increment/decrement
- Show documentatio
- Added new fadeIn command-line argument for starting the screensaver with a fade effect
- Show documentatio
- Set wallpaper command-line control random argument now selects a different wallpaper if the current one is already running
- Improved error presentation in the wallpaper customize dialog
- Improved file downloader with better error handling and performance
- Improved performance of video wallpaper screenshot capture (app theme and desktop picture)
- Added WebView2 install prompt when selecting it in settings if the runtime is missing
- Added in-app notification when WebView2 runtime is missing while selecting a wallpaper
- Changed wallpaper directory UI: address bar now opens the folder, side button allows selecting a new folder
- Switch from ListView to Segmented control in active wallpaper dialog
- New Grid visualizer debug tool in Diagnostic page
- Lots of code refactoring

Updates:
- Updated MPV player
- Updated to .NET 9
- Updated WindowsAppSDK
- Updated dependencies (includes important security patches.)
- Updated community translations