Multi-Monitor Phase 3: Spanning wallpapers and edge effects

[dskvr]

Phase 3: Spanning wallpapers and edge-aware effects

Implement panoramic wallpapers spanning multiple monitors and seamless edge transitions.

Requirements

Spanning/Panoramic Wallpapers

• Single image spanning across multiple monitors
• Automatic image slicing based on monitor geometry
• Proper aspect ratio handling
• Support for different monitor resolutions
• Bezel compensation options
• Handle non-uniform monitor arrangements

Monitor Topology Detection

• Detect monitor adjacency and arrangement
• Build monitor connectivity graph
• Calculate relative positions
• Handle gaps and overlaps

Edge-Aware Effects

• Seamless transitions at monitor boundaries
• Edge blending for smooth visual continuity
• Cursor-aware effects crossing monitors
• Parallax continuity across boundaries

Advanced Features

• Wave effects propagating across monitors
• Smooth panning across monitor array
• Adaptive image scaling for mixed resolutions
• Smart cropping for aspect ratio mismatches

Configuration Example

# Spanning wallpaper
[spanning]
enabled = true
image = "/path/to/panoramic-wallpaper.png"
mode = "stretch" # or "tile", "fit", "fill"
bezel_compensation = 20  # pixels

# Edge effects
[effects.edge]
enabled = true
blend_width = 50
fade_at_boundaries = false
seamless_parallax = true

# Topology hints (optional)
[topology]
arrangement = "horizontal" # or "vertical", "grid", "custom"
primary_position = "center" # or "left", "right"

Implementation Notes

• Calculate monitor topology from Wayland output positions
• Implement efficient image slicing algorithm
• Use shared textures where possible
• Handle dynamic monitor arrangement changes

Use Cases

• Ultra-wide panoramic desktop backgrounds
• Multi-monitor gaming setups
• Digital signage and video walls
• Immersive workstation environments

Status: 📋 Planned