Struct ImageProcessor 

pub struct ImageProcessor { /* private fields */ }

Image processing pipeline builder

Implementations

impl ImageProcessor

pub fn new() -> Self

pub fn resize(self, width: u32, height: u32) -> Self

Set target width and height

pub fn width(self, width: u32) -> Self

Set target width only (height computed from aspect ratio)

pub fn height(self, height: u32) -> Self

Set target height only (width computed from aspect ratio)

pub fn mode(self, mode: ResizeMode) -> Self

Set resize strategy

pub fn anchor(self, anchor: CropAnchor) -> Self

Set crop anchor for Cover mode

pub fn rotate(self, rotation: Rotation) -> Self

Rotate the image

pub fn flip(self, direction: FlipDirection) -> Self

Flip the image

pub fn blur(self, sigma: f32) -> Self

Apply gaussian blur (sigma value)

pub fn brightness(self, value: i32) -> Self

Adjust brightness (-100 to 100)

pub fn contrast(self, value: f32) -> Self

Adjust contrast (-100.0 to 100.0)

pub fn grayscale(self) -> Self

Convert to grayscale

pub fn crop(self, x: u32, y: u32, width: u32, height: u32) -> Self

Crop a specific region from the source image

pub fn sharpen(self, sigma: f32) -> Self

Apply sharpening filter (sigma value, e.g. 1.0-5.0)

pub fn upscale(self, allow: bool) -> Self

Allow upscaling (by default images are NOT upscaled beyond original size)

pub fn watermark( self, path: impl Into<PathBuf>, position: CropAnchor, opacity: u8, scale_percent: u32, margin: u32, ) -> Self

Apply a watermark image

processor.watermark("./logo.png", CropAnchor::BottomRight, 50, 15, 10)

• path: path to watermark image (PNG with transparency recommended)
• position: where to place the watermark
• opacity: 0-100 (100 = fully opaque)
• scale_percent: watermark size as % of the output image width (e.g. 15 = 15%)
• margin: pixel margin from edges

pub fn format(self, format: OutputFormat) -> Self

Set output format

pub fn jpeg(self, quality: u8) -> Self

Shortcut: output as JPEG with given quality (1-100)

pub fn png(self, compression: PngCompression) -> Self

Shortcut: output as optimized PNG

pub fn webp(self) -> Self

Shortcut: output as WebP

pub fn process(&self, source: &Path, dest: &Path) -> AppResult<()>

Process a source image file and save to destination

pub fn process_bytes(&self, data: &[u8], dest_ext: &str) -> AppResult<Vec<u8>>

Process from bytes and return processed bytes

Trait Implementations

impl Default for ImageProcessor

fn default() -> ImageProcessor

Returns the “default value” for a type.