Trait ContentRegionSource 

pub trait ContentRegionSource {
    // Required method
    fn content_region(
        &self,
        src_w: usize,
        src_h: usize,
        dst_w: usize,
        dst_h: usize,
    ) -> Result<ContentRegion>;
}

Something that knows where it puts the image content in a destination, such as the image crate’s ConvertOptions or a PreprocessSpec. The decoder takes it to map its output back to the source image with the same geometry the convert used.

Required Methods

fn content_region( &self, src_w: usize, src_h: usize, dst_w: usize, dst_h: usize, ) -> Result<ContentRegion>

The content region for an src_w×src_h source converted into a dst_w×dst_h destination.

Errors

Error::InvalidArgument when the geometry cannot be resolved, e.g. a source crop outside the source.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl ContentRegionSource for PreprocessSpec