Struct xpcom::interfaces::mozIColorAnalyzer

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

interface mozIColorAnalyzer : nsISupports

Methods

impl mozIColorAnalyzer

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

Cast this mozIColorAnalyzer to one of its base interfaces.

impl mozIColorAnalyzer

pub unsafe fn FindRepresentativeColor(
    &self,
    imageURI: *const nsIURI,
    callback: *const mozIRepresentativeColorCallback
) -> nsresult

/**
   * Given an image URI, find the most representative color for that image
   * based on the frequency of each color.  Preference is given to colors that
   * are more interesting.  Avoids the background color if it can be
   * discerned.  Ignores sufficiently transparent colors.
   *
   * This is intended to be used on favicon images.  Larger images take longer
   * to process, especially those with a larger number of unique colors.  If
   * imageURI points to an image that has more than 128^2 pixels, this method
   * will fail before analyzing it for performance reasons.
   *
   * @param imageURI
   *        A URI pointing to the image - ideally a data: URI, but any scheme
   *        that will load when setting the src attribute of a DOM img element
   *        should work.
   * @param callback
   *        Function to call when the representative color is found or an
   *        error occurs.
   */

void findRepresentativeColor (in nsIURI imageURI, in mozIRepresentativeColorCallback callback);

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 mozIColorAnalyzer

const IID: nsIID

IID: nsIID = nsID(3495303276, 10400, 18766, [170, 204, 158, 67, 55, 114, 177, 67])

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 mozIColorAnalyzer

unsafe fn addref(&self)

Increment the reference count.

unsafe fn release(&self)

Decrement the reference count, potentially freeing backing memory.

impl Deref for mozIColorAnalyzer

type Target = nsISupports

The resulting type after dereferencing.

fn deref(&self) -> &nsISupports

Dereferences the value.