Struct CropScaleConfig 

pub struct CropScaleConfig {
    pub source_width: u32,
    pub source_height: u32,
    pub target_width: u32,
    pub target_height: u32,
    pub aspect_mode: AspectMode,
    pub pad_alignment: PadAlignment,
    pub pad_color: (u8, u8, u8),
    pub manual_crop: Option<Rect>,
}

Configuration for a crop-and-scale operation.

Fields

source_width: u32

Source resolution.

source_height: u32

Source height in pixels.

target_width: u32

Target width in pixels.

target_height: u32

Target height in pixels.

aspect_mode: AspectMode

Aspect ratio handling mode.

pad_alignment: PadAlignment

Padding alignment when using AspectMode::Pad.

pad_color: (u8, u8, u8)

Padding color as (R, G, B).

manual_crop: Option<Rect>

Optional manual crop region applied before scaling.

Implementations

impl CropScaleConfig

pub fn new( source_width: u32, source_height: u32, target_width: u32, target_height: u32, ) -> Self

Creates a new crop/scale configuration.

pub fn with_aspect_mode(self, mode: AspectMode) -> Self

Sets the aspect ratio handling mode.

pub fn with_pad_alignment(self, alignment: PadAlignment) -> Self

Sets the padding alignment.

pub fn with_pad_color(self, r: u8, g: u8, b: u8) -> Self

Sets the padding color (used for letterbox/pillarbox bars).

pub fn with_manual_crop(self, crop: Rect) -> Self

Sets a manual crop region applied before scaling.

pub fn source_aspect(&self) -> f64

Returns the source aspect ratio.

pub fn target_aspect(&self) -> f64

Returns the target aspect ratio.

pub fn pad_type(&self) -> PadType

Determines the type of padding needed.

pub fn compute_scaled_size(&self) -> (u32, u32)

Computes the scaled region (before padding) that fits within the target.

Returns (scaled_width, scaled_height).

pub fn compute_pad_offsets(&self) -> (u32, u32)

Computes the padding offsets when using AspectMode::Pad.

Returns (x_offset, y_offset) for the image within the padded frame.

pub fn compute_crop_rect(&self) -> Rect

Computes the crop rect when using AspectMode::Crop.

Trait Implementations

impl Clone for CropScaleConfig

fn clone(&self) -> CropScaleConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CropScaleConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.