Struct Snapshot 

pub struct Snapshot { /* private fields */ }

Assists in creating gsk::RenderNodes for widgets.

It functions in a similar way to a cairo context, and maintains a stack of render nodes and their associated transformations.

The node at the top of the stack is the one that gtk_snapshot_append_…() functions operate on. Use the gtk_snapshot_push_…() functions and SnapshotExt::pop() to change the current node.

The typical way to obtain a Snapshot object is as an argument to the WidgetImpl::snapshot() vfunc. If you need to create your own Snapshot, use new().

Note that Snapshot applies some optimizations, so the node it produces may not match the API calls 1:1. For example, it will omit clip nodes if the child node is entirely contained within the clip rectangle.

Implements

SnapshotExt, [trait@gdk::prelude::SnapshotExt], [trait@glib::ObjectExt], SnapshotExtManual

GLib type: GObject with reference counted clone semantics.

Implementations

impl Snapshot

pub const NONE: Option<&'static Snapshot> = None

pub fn new() -> Snapshot

Creates a new Snapshot.

Returns

a newly-allocated Snapshot

Trait Implementations

impl AsRef<Snapshot> for Snapshot

fn as_ref(&self) -> &Snapshot

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<Snapshot> for Snapshot

fn borrow(&self) -> &Snapshot

Immutably borrows from an owned value.

impl Clone for Snapshot

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 Snapshot

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

Formats the value using the given formatter.

impl Default for Snapshot

fn default() -> Self

Returns the “default value” for a type.

impl From<Snapshot> for Snapshot

fn from(e: Snapshot) -> Snapshot

Converts to this type from the input type.

impl HasParamSpec for Snapshot

type ParamSpec = ParamSpecObject

type SetValue = Snapshot

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for Snapshot

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 Ord for Snapshot

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 Snapshot

type Parent = Snapshot

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

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 Snapshot

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 Snapshot

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for Snapshot

impl IsA<Snapshot> for Snapshot

impl IsA<Snapshot> for Snapshot