Struct DrawContext

pub struct DrawContext { /* private fields */ }

Base class for objects implementing different rendering methods.

DrawContext is the base object used by contexts implementing different rendering methods, such as CairoContext or GLContext. It provides shared functionality between those contexts.

You will always interact with one of those subclasses.

A DrawContext is always associated with a single toplevel surface.

This is an Abstract Base Class, you cannot instantiate it.

Properties

display

The Display used to create the DrawContext.

Readable | Writeable | Construct Only

surface

The Surface the context is bound to.

Readable | Writeable | Construct Only

Implements

DrawContextExt, DrawContextExtManual

GLib type: GObject with reference counted clone semantics.

Implementations

impl DrawContext

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

Trait Implementations

impl Clone for DrawContext

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 DrawContext

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

Formats the value using the given formatter.

impl HasParamSpec for DrawContext

type ParamSpec = ParamSpecObject

type SetValue = DrawContext

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for DrawContext

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 DrawContext

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 DrawContext

type Parent = Object

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

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 DrawContext

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 DrawContext

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for DrawContext

impl IsA<DrawContext> for CairoContext

impl IsA<DrawContext> for GLContext

impl IsA<DrawContext> for VulkanContext