Struct fltk::draw::Offscreen

pub struct Offscreen { /* private fields */ }

Opaque type around Fl_Offscreen

Implementations

impl Offscreen

pub fn new(w: i32, h: i32) -> Option<Offscreen>

Creates a new offscreen type

pub unsafe fn uninit() -> Offscreen

Creates an uninitialized offscreen type

Safety

Leaves the offscreen in an uninitialized state

pub fn begin(&self)

Begins drawing in the offscreen

pub fn end(&self)

Ends drawing in the offscreen

pub fn copy(&self, x: i32, y: i32, w: i32, h: i32, src_x: i32, src_y: i32)

Copies the offscreen

pub fn rescale(&mut self)

Rescales the offscreen

pub fn is_valid(&self) -> bool

Checks the validity of the offscreen

pub unsafe fn shallow_copy(&self) -> Offscreen

Performs a shallow copy of the offscreen

Safety

This can lead to multiple mutable references to the same offscreen

Trait Implementations

impl Debug for Offscreen

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

Formats the value using the given formatter.

impl Drop for Offscreen

fn drop(&mut self)

Executes the destructor for this type.

impl PartialEq for Offscreen

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for Offscreen

impl Send for Offscreen

Available on non-crate feature single-threaded only.

impl Sync for Offscreen

Available on non-crate feature single-threaded only.