Struct QRCode 

#[repr(transparent)]
pub struct QRCode {
    inner: TypedObjectRef<QRCode, <QRCode as ObjectSubclass>::ParentType>,
    phantom: PhantomData<()>,
}

A widget that display a QR Code.

The QR code of QRCode is set with the QRCode::set_bytes() method. It is recommended for a QR Code to have a quiet zone, in most contexts, widgets already count with such a margin.

The code can be themed via css, where a recommended quiet-zone can be as a padding:

qrcode {
    color: black;
    background: white;
    padding: 24px;  /* 4 ⨉ block-size */
}

GLib type: GObject with reference counted clone semantics.

Fields

inner: TypedObjectRef<QRCode, <QRCode as ObjectSubclass>::ParentType>

phantom: PhantomData<()>

Implementations

impl QRCode

pub fn block_size(&self) -> <Cell<u32> as Property>::Value

The block size of this QR Code.

Determines the size of the widget.

pub fn set_block_size<'a>( &self, value: impl Borrow<<<Cell<u32> as Property>::Value as HasParamSpec>::SetValue>, )

The block size of this QR Code.

Determines the size of the widget.

pub fn connect_block_size_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Listen for notifications of a change in the block-size property

pub fn notify_block_size(&self)

Notify listeners of a change in the block-size property

impl QRCode

pub fn new() -> Self

Creates a new QRCode.

pub fn from_bytes(bytes: &[u8]) -> Self

Creates a new QRCode with a QR code generated from bytes.

pub fn set_bytes(&self, bytes: &[u8])

Sets the displayed code of self to a QR code generated from bytes.

pub fn set_qrcode(&self, qrcode: QrCode)

Set the QrCode to be displayed.

Trait Implementations

impl Clone for QRCode

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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

Performs copy-assignment from source.

impl Debug for QRCode

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

Formats the value using the given formatter.

impl HasParamSpec for QRCode

type ParamSpec = ParamSpecObject

type SetValue = QRCode

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(&str) -> ParamSpecObjectBuilder<'_, QRCode>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for QRCode

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl ObjectSubclassIs for QRCode

type Subclass = QRCode

impl Ord for QRCode

fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl ParentClassIs for QRCode

type Parent = Widget

impl<OT: ObjectType> PartialEq<OT> for QRCode

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

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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<OT: ObjectType> PartialOrd<OT> for QRCode

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for QRCode

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for QRCode

impl IsA<Accessible> for QRCode

impl IsA<Buildable> for QRCode

impl IsA<ConstraintTarget> for QRCode

impl IsA<Widget> for QRCode