Struct PngImage

pub struct PngImage {
    pub width: usize,
    pub height: usize,
    pub data: Vec<u8>,
}

A PNG image. Currently only supports RGB and RGBA color types

Fields

width: usize

The width of the image

height: usize

The height of the image

data: Vec<u8>

The data in the image, stored in chunks of 4 per pixel, containing the image in RGBA order

Implementations

impl PngImage

pub fn load_from_path<R: Read>(r: R) -> Result<Self, DecodingError>

Load an image from a specified source.

pub fn load_from_path_transform<R: Read, F: Fn(Color) -> Color>( r: R, transform: F, ) -> Result<Self, DecodingError>

Load an image and apply a function to each pixel. Mostly used by LatexObj to fix alpha

Trait Implementations

impl Clone for PngImage

fn clone(&self) -> PngImage

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Drawable for PngImage

fn content(&self) -> Vec<&dyn Drawable>

What this object contains

fn content_mut(&mut self) -> Vec<&mut dyn Drawable>

What this object contains, mutably

fn draw( &self, canvas: &mut Canvas<Window>, pos: &Position, _settings: DrawSettings, )

Draw everything

fn step(&mut self)

When the user presses space, the state of the presentation is advanced. This method is what is called.

fn state(&self) -> State

What state the object is in

fn register(&mut self)

Register all content. This is mostly just used by LatexObjs, that need to be registered before loaded.

fn load(&mut self)

Load all content

fn event(&mut self, e: Event)

When any event occurs

fn update(&mut self, dt: f64)

Tick the object

impl ImageContainer for PngImage

fn get_data(&self) -> &Vec<u8>

Retrieve the data in the image

fn get_data_mut(&mut self) -> &mut Vec<u8>

Retrieve the data in the image, mutably

fn into_data(self) -> Vec<u8>

Retrieve the data in the image, consuming the object

fn as_knownsize(&self) -> &dyn KnownSize

Convert the object to a dynamic KnownSize object, as rust doesn’t support calling KnownSize -methods directly on this object

impl KnownSize for PngImage

fn width(&self) -> usize

The width of the object

fn height(&self) -> usize

The height of the object