Struct xpcom::interfaces::nsIDOMCanvasRenderingContext2D

#[repr(C)]
pub struct nsIDOMCanvasRenderingContext2D { /* fields omitted */ }

interface nsIDOMCanvasRenderingContext2D : nsISupports

/**
 * This interface remains only for the constants, for a context, use the
 * WebIDL/Paris bindings instead (CanvasRenderingContext2D.webidl).
 * The constants are used by CanvasRenderingContext2D::DrawWindow and are
 * used in WindowsPreviewPerTab.jsm and some extensions. The constants can
 * be referenced directly via a canvas context 2d rather than this interface,
 * and that should be preferred in new code.
 */

Methods

impl nsIDOMCanvasRenderingContext2D

pub fn coerce<T: nsIDOMCanvasRenderingContext2DCoerce>(&self) -> &T

Cast this nsIDOMCanvasRenderingContext2D to one of its base interfaces.

impl nsIDOMCanvasRenderingContext2D

pub const DRAWWINDOW_DRAW_CARET: i64

DRAWWINDOW_DRAW_CARET: i64 = 1

pub const DRAWWINDOW_DO_NOT_FLUSH: i64

DRAWWINDOW_DO_NOT_FLUSH: i64 = 2

pub const DRAWWINDOW_DRAW_VIEW: i64

DRAWWINDOW_DRAW_VIEW: i64 = 4

pub const DRAWWINDOW_USE_WIDGET_LAYERS: i64

DRAWWINDOW_USE_WIDGET_LAYERS: i64 = 8

pub const DRAWWINDOW_ASYNC_DECODE_IMAGES: i64

DRAWWINDOW_ASYNC_DECODE_IMAGES: i64 = 16

Methods from Deref<Target = nsISupports>

pub fn coerce<T: nsISupportsCoerce>(&self) -> &T

Cast this nsISupports to one of its base interfaces.

pub unsafe fn QueryInterface(
    &self,
    uuid: &nsIID,
    result: *mut *mut c_void
) -> nsresult

void QueryInterface (in nsIIDRef uuid, [iid_is (uuid), retval] out nsQIResult result);

pub unsafe fn AddRef(&self) -> nsrefcnt

[noscript,notxpcom] nsrefcnt AddRef ();

pub unsafe fn Release(&self) -> nsrefcnt

[noscript,notxpcom] nsrefcnt Release ();

Trait Implementations

impl XpCom for nsIDOMCanvasRenderingContext2D

const IID: nsIID

IID: nsIID = nsID(1142409911, 51179, 19980, [176, 10, 196, 56, 66, 240, 203, 168])

fn query_interface<T: XpCom>(&self) -> Option<RefPtr<T>>

Perform a QueryInterface call on this object, attempting to dynamically cast it to the requested interface type. Returns Some(RefPtr) if the cast succeeded, and None otherwise.

impl RefCounted for nsIDOMCanvasRenderingContext2D

unsafe fn addref(&self)

Increment the reference count.

unsafe fn release(&self)

Decrement the reference count, potentially freeing backing memory.

impl Deref for nsIDOMCanvasRenderingContext2D

type Target = nsISupports

The resulting type after dereferencing.

fn deref(&self) -> &nsISupports

Dereferences the value.