fltk::prelude

Trait ImageExt

Source 
pub unsafe trait ImageExt {

Show 20 methods    // Required methods
    fn copy(&self) -> Self
       where Self: Sized;
    fn copy_sized(&self, w: i32, h: i32) -> Self
       where Self: Sized;
    fn draw(&mut self, x: i32, y: i32, width: i32, height: i32);
    fn draw_ext(
        &mut self,
        x: i32,
        y: i32,
        width: i32,
        height: i32,
        cx: i32,
        cy: i32,
    );
    fn w(&self) -> i32;
    fn h(&self) -> i32;
    fn as_image_ptr(&self) -> *mut Fl_Image;
    unsafe fn from_image_ptr(ptr: *mut Fl_Image) -> Self
       where Self: Sized;
    fn as_rgb_data(&self) -> Vec<u8> ⓘ;
    fn as_rgb_image(&self) -> Result<RgbImage, FltkError>;
    fn scale(
        &mut self,
        width: i32,
        height: i32,
        proportional: bool,
        can_expand: bool,
    );
    fn count(&self) -> i32;
    fn data_w(&self) -> i32;
    fn data_h(&self) -> i32;
    fn depth(&self) -> ColorDepth;
    fn ld(&self) -> i32;
    fn inactive(&mut self);
    unsafe fn delete(img: Self)
       where Self: Sized;
    fn was_deleted(&self) -> bool;
    unsafe fn into_image<I: ImageExt>(self) -> I
       where Self: Sized;

}
Expand description

Defines the methods implemented by all image types

§Safety

fltk-rs traits depend on some FLTK internal code

§Warning

fltk-rs traits are non-exhaustive, to avoid future breakage if you try to implement them manually, use the Deref and DerefMut pattern

Required Methods§

Source

fn copy(&self) -> Self
where Self: Sized,

Performs a deep copy of the image

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

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

Source

fn draw(&mut self, x: i32, y: i32, width: i32, height: i32)

Draws the image at the presupplied coordinates and size

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fn draw_ext( &mut self, x: i32, y: i32, width: i32, height: i32, cx: i32, cy: i32, )

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

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fn w(&self) -> i32

Return the width of the image

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fn h(&self) -> i32

Return the height of the image

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fn as_image_ptr(&self) -> *mut Fl_Image

Returns a pointer of the image

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

Transforms a raw image pointer to an image

§Safety

The pointer must be valid

Source

fn as_rgb_data(&self) -> Vec<u8> ⓘ

Returns the underlying raw rgb image data

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

Transforms the image into an RgbImage

§Errors

Errors on failure to transform to RgbImage

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

Scales the image

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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)

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fn data_w(&self) -> i32

Gets the image’s data width

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fn data_h(&self) -> i32

Gets the image’s data height

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fn depth(&self) -> ColorDepth

Gets the image’s depth

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fn ld(&self) -> i32

Gets the image’s line data size

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fn inactive(&mut self)

Greys the image

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unsafe fn delete(img: Self)
where Self: Sized,

Deletes the image

§Safety

An image shouldn’t be deleted while it’s being used by a widget

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fn was_deleted(&self) -> bool

Checks if the image was deleted

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unsafe fn into_image<I: ImageExt>(self) -> I
where Self: Sized,

Transforms an Image base into another Image

§Safety

Can be unsafe if used to downcast to an image of different format

Implementors§