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Nomarchy/themes/engine/scripts/nomarchy-theme-bg-next
Bernardo Magri bbdf34ced8 refactor: implement component-based architecture for enhanced maintainability
- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md
2026-04-12 14:51:15 +01:00

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#!/usr/bin/env bash
# Cycles through the background images available for the current theme.
# Declarative + Hybrid (instant swww) for Nomarchy NixOS.
STATE_DIR="$HOME/.config/nomarchy"
STATE_FILE="$STATE_DIR/state.json"
mkdir -p "$STATE_DIR"
[[ ! -f $STATE_FILE ]] && echo "{}" > "$STATE_FILE"
THEME_NAME=$(jq -r '.theme // "nord"' "$STATE_FILE")
# Resolve themes directory (Built-in from Nix store via Home Manager, or user extra)
if [ -d "$HOME/.config/nomarchy/themes/$THEME_NAME" ]; then
THEMES_DIR="$HOME/.config/nomarchy/themes"
else
THEMES_DIR="$HOME/.local/share/nomarchy/themes"
fi
BG_DIR="$THEMES_DIR/$THEME_NAME/backgrounds"
if [ ! -d "$BG_DIR" ]; then
notify-send "No background directory found for theme $THEME_NAME"
exit 1
fi
mapfile -t BACKGROUNDS < <(ls "$BG_DIR" | sort)
TOTAL=${#BACKGROUNDS[@]}
if (( TOTAL == 0 )); then
notify-send "No backgrounds found in $BG_DIR"
exit 1
fi
CURRENT_BG=$(jq -r '.wallpaper' "$STATE_FILE")
INDEX=-1
for i in "${!BACKGROUNDS[@]}"; do
if [[ "$BG_DIR/${BACKGROUNDS[$i]}" == "$CURRENT_BG" ]]; then
INDEX=$i
break
fi
done
NEXT_INDEX=$(((INDEX + 1) % TOTAL))
NEW_BG="$BG_DIR/${BACKGROUNDS[$NEXT_INDEX]}"
TMP_JSON=$(mktemp)
jq --arg wp "$NEW_BG" '.wallpaper = $wp' "$STATE_FILE" > "$TMP_JSON" && mv "$TMP_JSON" "$STATE_FILE"
# Instant feedback via swww
if pgrep -x swww-daemon >/dev/null; then
swww img "$NEW_BG" --transition-type outer --transition-pos 0.85,0.97 --transition-step 90
else
swww init && swww img "$NEW_BG"
fi
echo "Background set to $NEW_BG declaratively."