obsidianwall is a powerful Bash script designed to compose and manipulate wallpapers using ImageMagick. It allows you to combine a background image with an overlay, apply various artistic and photographic effects, perform transformations, and add watermarks, all through a simple command-line interface. Highly inspired by instantWALLPAPER

• Image Composition: Overlay images onto a background with control over scaling, position, and gravity.
• Extensive Image Effects: Apply a wide range of effects including blur, shadow, brightness, contrast, saturation, hue, gamma, vignette, noise, sharpen, emboss, sepia, polaroid, sketch, charcoal, oil paint, edge detection, solarize, and posterize.
• Distortion Effects: Experiment with wave, swirl, implode, and spread distortions.
• Borders and Frames: Add custom borders with specified width and color.
• Color Adjustments: Fine-tune colors with options for tint, threshold, levels, colorspace conversion, modulation, channel effects, and color matrices.
• Geometry and Cropping: Perform cropping, trimming, chopping, splicing, extending, and content-aware resizing (liquid rescale).
• Transformations: Flip, flop, transpose, transverse, and roll images.
• Advanced Blurring and Sharpening: Utilize adaptive blur, adaptive sharpen, bilateral blur, motion blur, radial blur, and selective blur.
• Annotation and Watermarking: Add text annotations and image watermarks with customizable position, font, size, color, and opacity.
• Comprehensive Image Processing: Supports various compression types, color depths, ICC profiles, interlacing, and resize filters.

• ImageMagick 7+: The script relies heavily on the magick command-line tool.
  • ObsidianOS and Arch GNU/Linux: sudo pacman -S imagemagick

yay -S obsidianwall-git  # or paru

1. Clone the repository and cd:

   git clone https://github.com/Obsidian-OS/obsidianwall
   cd obsidianwall

2. Make the script executable:

   chmod +x obsidianwall

3. (Optional) Add to your PATH: For easier access, you can move the script to a directory included in your system's PATH, e.g., /usr/local/bin:

   sudo mv obsidianwall /usr/local/bin/

The basic syntax for obsidianwall is:

obsidianwall [OPTIONS] [INPUT] [OVERLAY] [OUTPUT]

• INPUT: The path to your background image.
• OVERLAY: (Optional) The path to the image you want to overlay.
• OUTPUT: The desired path for the output image.

If INPUT, OVERLAY, or OUTPUT are not provided as positional arguments, the script will use default values: photo.jpg, /usr/share/pixmaps/obsidianos.png, and obsidian-wallpaper.png respectively.

obsidianwall input.jpg overlay.png output.png

Here's a detailed list of available options:

• -i, --input FILE: Input image file (default: photo.jpg)
• -o, --overlay FILE: Overlay image file (default: /usr/share/pixmaps/obsidianos-logo.png)
• -O, --output FILE: Output image file (default: obsidian-wallpaper.png)
• -s, --scale PERCENT: Overlay scale percentage (default: 30)
• -g, --gravity POSITION: Overlay position (default: center)
• -r, --resolution WxH: Force output resolution (e.g., 1920x1080)
• -q, --quality PERCENT: JPEG quality (default: 95)
• -f, --format FORMAT: Output format (auto-detect from extension, e.g., png, jpg)

• --offset-x PIXELS: Horizontal offset from gravity point (default: 0)
• --offset-y PIXELS: Vertical offset from gravity point (default: 0)
• --gravity-list: List all available gravity positions

• --rotation DEGREES: Rotate overlay (default: 0)
• --skew-x DEGREES: Skew overlay horizontally (default: 0)
• --skew-y DEGREES: Skew overlay vertically (default: 0)
• --opacity PERCENT: Overlay opacity (default: 100)
• --blur RADIUS: Blur overlay (default: 0)
• --shadow RADIUS: Add shadow to overlay (default: 0)

• --brightness PERCENT: Adjust brightness (default: 100)
• --contrast PERCENT: Adjust contrast (default: 100)
• --saturation PERCENT: Adjust saturation (default: 100)
• --hue DEGREES: Shift hue (default: 0)
• --gamma VALUE: Gamma correction (default: 1.0)
• --vignette STRENGTH: Add vignette effect (default: 0)
• --noise LEVEL: Add noise (default: 0)
• --sharpen RADIUS: Sharpen image (default: 0)

• --emboss RADIUS: Emboss effect (default: 0)
• --sepia THRESHOLD: Sepia tone effect (default: 0)
• --polaroid ANGLE: Polaroid effect (default: 0)
• --sketch RADIUS: Sketch effect (default: 0)
• --charcoal RADIUS: Charcoal effect (default: 0)
• --oil-paint RADIUS: Oil painting effect (default: 0)
• --edge-detect RADIUS: Edge detection (default: 0)
• --solarize THRESHOLD: Solarization effect (default: 0)
• --posterize LEVELS: Posterize effect (default: 0)

• --wave-amplitude PIXELS: Wave distortion amplitude (default: 0)
• --wave-length PIXELS: Wave distortion length (default: 0)
• --swirl DEGREES: Swirl distortion (default: 0)
• --implode AMOUNT: Implode distortion (default: 0)
• --spread PIXELS: Spread pixels (default: 0)

• --border-width PIXELS: Border width (default: 0)
• --border-color COLOR: Border color (default: black)
• --background COLOR: Background color
• --matte-color COLOR: Matte color for transparent areas

• --tint COLOR: Tint color overlay
• --threshold PERCENT: Black/white threshold (default: 0)
• --levels "black,gamma,white": Adjust levels
• --colorspace SPACE: Convert colorspace
• --modulate "brightness,saturation,hue": Modulate values
• --channel-fx EXPRESSION: Channel effects
• --color-matrix MATRIX: Apply color matrix

• --crop GEOMETRY: Crop to geometry (WxH+X+Y)
• --trim: Remove transparent/uniform borders
• --chop GEOMETRY: Remove pixels from image
• --splice GEOMETRY: Insert pixels into image
• --extent GEOMETRY: Extend image to geometry
• --liquid-rescale GEOMETRY: Content-aware resize

• --flop: Mirror horizontally
• --flip: Mirror vertically
• --transpose: Transpose (flip + 90° rotation)
• --transverse: Transverse (flop + 90° rotation)
• --roll GEOMETRY: Roll image pixels

• --adaptive-blur RADIUS: Adaptive blur
• --adaptive-sharpen RADIUS: Adaptive sharpen
• --bilateral-blur GEOMETRY: Bilateral blur (edge-preserving)
• --motion-blur GEOMETRY: Motion blur (angle x radius)
• --radial-blur ANGLE: Radial blur (default: 0)
• --selective-blur GEOMETRY: Selective blur
• --unsharp GEOMETRY: Unsharp mask (radius x sigma+gain+threshold)

• --composite-method METHOD: Composite method (default: over)
• --compression TYPE: Compression type (default: none)
• --depth BITS: Color depth (default: 8)
• --profile PATH: Apply ICC color profile
• --strip-profiles: Strip all color profiles
• --interlace TYPE: Interlacing (default: none)
• --filter TYPE: Resize filter (default: lanczos)
• --virtual-pixel TYPE: Virtual pixel method (default: edge)
• --interpolate TYPE: Interpolation method (default: average)
• --alpha-channel TYPE: Alpha channel handling (default: activate)

• --annotate TEXT: Add text annotation
• --annotate-font FONT: Font for annotation
• --annotate-size SIZE: Font size (default: 12)
• --annotate-color COLOR: Font color (default: white)
• --annotate-position POS: Text position (default: south)
• --watermark FILE: Additional watermark image
• --watermark-gravity POS: Watermark position (default: southeast)
• --watermark-opacity PERCENT: Watermark opacity (default: 50)

• --despeckle: Remove speckle noise
• --enhance: Enhance image
• --equalize: Histogram equalization
• --normalize: Normalize contrast
• --auto-level: Auto-adjust levels
• --auto-gamma: Auto-adjust gamma
• --linear-stretch "black,white": Linear stretch
• --sigmoidal-contrast "contrast,midpoint": Sigmoidal contrast

• --morphology "method:kernel": Morphological operations
• --distort "method:args": Distortion operations
• --fx EXPRESSION: Mathematical operations
• --evaluate "operator:value": Evaluate mathematical expression
• --function "name:parameters": Apply function

• -h, --help: Show this help message
• -v, --verbose: Enable verbose output
• --version: Show script version
• --list-formats: List supported image formats
• --list-filters: List available resize filters
• --list-composite-methods: List available composite methods
• --dry-run: Show commands without executing them

• Basic composition:

  obsidianwall input.jpg overlay.png output.png

• Scale overlay, position it, and add a shadow:

  obsidianwall -s 50 --gravity northeast --shadow 10 input.jpg overlay.png

• Apply sepia tone, vignette, and a gold border:

  obsidianwall --sepia 80 --vignette 30 --border-width 5 --border-color gold input.jpg

• Apply wave distortion, swirl, and compose:

  obsidianwall --wave-amplitude 10 --wave-length 100 --swirl 45 input.jpg overlay.png

• Adjust brightness, contrast, and saturation:

  obsidianwall --brightness 120 --contrast 110 --saturation 130 input.jpg overlay.png

This project is licensed under the MIT License.