Struct usvgr::PreloadedImageData

pub struct PreloadedImageData {
    pub data: Cow<'static, [u8]>,
    pub width: u32,
    pub height: u32,
    pub mime: String,
}

Use this struct to preload, decode and cache images for the upcoming rendering.

Fields

data: Cow<'static, [u8]>

The decoded image data. Make sure that if you submit the data directly it must be blended for semi transparent colors. Either a static slice or an owned vector. Povide a static slice that is pre-blended in case of static resource linking for rendering.

width: u32

The width of image in pixels

height: u32

The height of image in pixels

mime: String

The image mime type (png/jpg)

Implementations

impl PreloadedImageData

pub fn blend_rgba_slice(rgba_slice: &[u8]) -> Vec<u8>

Converts raw rgba pixmap source to the rgba source with blended semi transparent colors.

pub fn new(mime: String, width: u32, height: u32, rgba_data: &[u8]) -> Self

Creates a new PreloadedImageData from the given rgba8 buffer and blends all the semi transparent colors.

pub fn new_blended( mime: String, width: u32, height: u32, rgba_data: &'static [u8] ) -> Arc<Self>

Creates a new PreloadedImageData from the given rgba8 buffer which is meant to be already blended for semi transparent colors.

You can use PreloadedImageData::blend_rgba_slice to blend the colors in advance.

Trait Implementations

impl Debug for PreloadedImageData

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

Formats the value using the given formatter.

impl Hash for PreloadedImageData

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.