Struct JpegImage

pub struct JpegImage { /* private fields */ }

Available on crate feature use-images only.

Creates a struct holding a Jpeg image

Implementations

impl JpegImage

pub fn load<P: AsRef<Path>>(path: P) -> Result<JpegImage, FltkError>

Loads the image from a filesystem path, doesn’t check for the validity of the data

Errors

Errors on non-existent path or invalid format

Examples found in repository

examples/image.rs (line 10)

fn main() -> Result<(), Box<dyn Error>> {
    let app = app::App::default().with_scheme(app::Scheme::Gleam);
    let mut wind = Window::default().with_size(400, 300);
    let mut frame = Frame::default_fill();

    {
        let mut image = JpegImage::load("screenshots/calc.jpg")?;
        frame.set_image(Some(image.clone()));
        image.scale(200, 200, true, true);
    }

    // // To remove an image
    // frame.set_image(None::<SharedImage>);

    wind.end();
    wind.make_resizable(true);
    wind.show();

    app.run()?;
    Ok(())
}

pub fn from_data(data: &[u8]) -> Result<JpegImage, FltkError>

Loads the image from data/memory

Errors

Errors on invalid format

Trait Implementations

impl Clone for JpegImage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JpegImage

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

Formats the value using the given formatter.

impl Drop for JpegImage

fn drop(&mut self)

Executes the destructor for this type.

impl ImageExt for JpegImage

fn copy(&self) -> Self

Performs a deep copy of the image

fn copy_sized(&self, w: i32, h: i32) -> Self

Performs a deep copy of the image but to a new size. This will make use of the scaling algorithm when resizing.

fn draw(&mut self, arg2: i32, arg3: i32, arg4: i32, arg5: i32)

Draws the image at the presupplied coordinates and size

fn draw_ext( &mut self, arg2: i32, arg3: i32, arg4: i32, arg5: i32, cx: i32, cy: i32, )

Draws the image at the presupplied coordinates and size and offset cx, cy

fn w(&self) -> i32

Return the width of the image

fn h(&self) -> i32

Return the height of the image

fn as_image_ptr(&self) -> *mut Fl_Image

Returns a pointer of the image

unsafe fn from_image_ptr(ptr: *mut Fl_Image) -> Self

Transforms a raw image pointer to an image

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

Returns the underlying raw rgb image data

fn as_rgb_image(&self) -> Result<RgbImage, FltkError>

Transforms the image into an RgbImage

fn scale( &mut self, width: i32, height: i32, proportional: bool, can_expand: bool, )

Scales the image

fn count(&self) -> i32

Return the count of pointers in an image (Pixmaps have more than 1, bitmaps have 0, Rgb based images have 1)

fn data_w(&self) -> i32

Gets the image’s data width

fn data_h(&self) -> i32

Gets the image’s data height

fn depth(&self) -> ColorDepth

Gets the image’s depth

fn ld(&self) -> i32

Gets the image’s line data size

fn inactive(&mut self)

Greys the image

unsafe fn delete(img: Self)

Deletes the image

fn was_deleted(&self) -> bool

Checks if the image was deleted

unsafe fn into_image<I: ImageExt>(self) -> I

Transforms an Image base into another Image

impl PartialEq for JpegImage

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for JpegImage

impl Send for JpegImage

Available on non-crate feature single-threaded only.

impl Sync for JpegImage

Available on non-crate feature single-threaded only.