Struct gdk4::Surface

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pub struct Surface { /* private fields */ }
Expand description

A Surface is a rectangular region on the screen.

It’s a low-level object, used to implement high-level objects such as GtkWindow.

The surfaces you see in practice are either Toplevel or Popup, and those interfaces provide much of the required API to interact with these surfaces. Other, more specialized surface types exist, but you will rarely interact with them directly.

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

§Properties

§cursor

The mouse pointer for the Surface.

Readable | Writeable

§display

The Display connection of the surface.

Readable | Writeable | Construct Only

§frame-clock

The FrameClock of the surface.

Readable | Writeable | Construct Only

§height

The height of the surface, in pixels.

Readable

§mapped

Whether the surface is mapped.

Readable

§scale

The scale of the surface.

Readable

§scale-factor

The scale factor of the surface.

The scale factor is the next larger integer, compared to scale.

Readable

§width

The width of the surface in pixels.

Readable

§Signals

§enter-monitor

Emitted when @surface starts being present on the monitor.

§event

Emitted when GDK receives an input event for @surface.

§layout

Emitted when the size of @surface is changed, or when relayout should be performed.

Surface size is reported in ”application pixels”, not ”device pixels” (see gdk_surface_get_scale_factor()).

§leave-monitor

Emitted when @surface stops being present on the monitor.

§render

Emitted when part of the surface needs to be redrawn.

§Implements

SurfaceExt, SurfaceExtManual

Implementations§

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impl Surface

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

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pub fn new_popup(parent: &impl IsA<Surface>, autohide: bool) -> Surface

Create a new popup surface.

The surface will be attached to @parent and can be positioned relative to it using PopupExt::present().

§parent

the parent surface to attach the surface to

§autohide

whether to hide the surface on outside clicks

§Returns

a new Surface

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pub fn new_toplevel(display: &impl IsA<Display>) -> Surface

Creates a new toplevel surface.

§display

the display to create the surface on

§Returns

the new Surface

Trait Implementations§

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impl Clone for Surface

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Surface

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

Formats the value using the given formatter. Read more
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impl HasParamSpec for Surface

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type ParamSpec = ParamSpecObject

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type SetValue = Surface

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, Surface>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for Surface

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for Surface

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for Surface

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

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for Surface

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for Surface

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for Surface

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impl IsA<Surface> for DragSurface

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impl IsA<Surface> for Popup

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impl IsA<Surface> for Toplevel

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impl<T> Any for T
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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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Returns the argument unchanged.

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unsafe fn from_glib_none_num_as_vec(ptr: *mut GSList, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec(ptr: *mut GSList, num: usize) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(ptr: *mut GSList, num: usize) -> Vec<T>

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unsafe fn from_glib_full_as_vec(_: *const GPtrArray) -> Vec<T>

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unsafe fn from_glib_full_as_vec(_: *const GSList) -> Vec<T>

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unsafe fn from_glib_none_as_vec(ptr: *mut GList) -> Vec<T>

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unsafe fn from_glib_full_as_vec(ptr: *mut GPtrArray) -> Vec<T>

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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where T: Into<Value>,

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impl<T> ObjectExt for T
where T: ObjectType,

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fn is<U>(&self) -> bool
where U: StaticType,

Returns true if the object is an instance of (can be cast to) T.
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Returns the type of the object.
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where T: IsClass,

Returns the class of the object.
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where U: IsClass,

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where U: IsInterface,

Returns the interface T of the object. Read more
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fn set_property(&self, property_name: &str, value: impl Into<Value>)

Sets the property property_name of the object to value value. Read more
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fn set_property_from_value(&self, property_name: &str, value: &Value)

Sets the property property_name of the object to value value. Read more
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fn set_properties(&self, property_values: &[(&str, &dyn ToValue)])

Sets multiple properties of the object at once. Read more
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fn set_properties_from_value(&self, property_values: &[(&str, Value)])

Sets multiple properties of the object at once. Read more
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fn property<V>(&self, property_name: &str) -> V
where V: for<'b> FromValue<'b> + 'static,

Gets the property property_name of the object and cast it to the type V. Read more
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fn property_value(&self, property_name: &str) -> Value

Gets the property property_name of the object. Read more
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fn has_property(&self, property_name: &str, type_: Option<Type>) -> bool

Check if the object has a property property_name of the given type_. Read more
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fn property_type(&self, property_name: &str) -> Option<Type>

Get the type of the property property_name of this object. Read more
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fn find_property(&self, property_name: &str) -> Option<ParamSpec>

Get the ParamSpec of the property property_name of this object.
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fn list_properties(&self) -> PtrSlice<ParamSpec>

Return all ParamSpec of the properties of this object.
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fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

Freeze all property notifications until the return guard object is dropped. Read more
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unsafe fn set_qdata<QD>(&self, key: Quark, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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unsafe fn set_data<QD>(&self, key: &str, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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fn block_signal(&self, handler_id: &SignalHandlerId)

Block a given signal handler. Read more
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fn unblock_signal(&self, handler_id: &SignalHandlerId)

Unblock a given signal handler.
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)

Stop emission of the currently emitted signal.
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fn stop_signal_emission_by_name(&self, signal_name: &str)

Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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fn connect<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_id on this object. Read more
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where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_name on this object. Read more
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where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_id on this object. Read more
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unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_name on this object. Read more
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unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_id on this object. Read more
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fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_name on this object. Read more
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Connect a closure to the signal signal_id on this object. Read more
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fn watch_closure(&self, closure: &impl AsRef<Closure>)

Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> R

Emit signal by signal id. Read more
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fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>

Same as Self::emit but takes Value for the arguments.
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fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> R

Emit signal by its name. Read more
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Emit signal by its name. Read more
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Emit signal by its name with details. Read more
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fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by its name with details. Read more
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fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by signal id with details. Read more
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId
where F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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fn notify_by_pspec(&self, pspec: &ParamSpec)

Notify that the given property has changed its value. Read more
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fn downgrade(&self) -> WeakRef<T>

Downgrade this object to a weak reference.
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fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + Send + 'static,

Add a callback to be notified when the Object is disposed.
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fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + 'static,

Add a callback to be notified when the Object is disposed. Read more
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fn bind_property<'a, 'f, 't, O>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>
where O: ObjectType,

Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for T
where T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for T
where T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> R
where F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<O> SurfaceExt for O
where O: IsA<Surface>,

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fn beep(&self)

Emits a short beep associated to @self. Read more
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fn create_cairo_context(&self) -> CairoContext

Creates a new CairoContext for rendering on @self. Read more
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fn create_gl_context(&self) -> Result<GLContext, Error>

Creates a new GLContext for the Surface. Read more
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fn create_vulkan_context(&self) -> Result<VulkanContext, Error>

👎Deprecated: Since 4.14
Sets an error and returns None. Read more
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fn destroy(&self)

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fn cursor(&self) -> Option<Cursor>

Retrieves a Cursor pointer for the cursor currently set on the Surface. Read more
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fn device_cursor(&self, device: &impl IsA<Device>) -> Option<Cursor>

Retrieves a Cursor pointer for the @device currently set on the specified Surface. Read more
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fn device_position( &self, device: &impl IsA<Device> ) -> Option<(f64, f64, ModifierType)>

Obtains the current device position and modifier state. Read more
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fn display(&self) -> Display

Gets the Display associated with a Surface. Read more
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fn frame_clock(&self) -> FrameClock

Gets the frame clock for the surface. Read more
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fn height(&self) -> i32

Returns the height of the given @self. Read more
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fn is_mapped(&self) -> bool

Checks whether the surface has been mapped. Read more
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fn scale(&self) -> f64

Available on crate feature v4_12 only.
Returns the internal scale that maps from surface coordinates to the actual device pixels. Read more
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fn scale_factor(&self) -> i32

Returns the internal scale factor that maps from surface coordinates to the actual device pixels. Read more
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fn width(&self) -> i32

Returns the width of the given @self. Read more
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fn hide(&self)

Hide the surface. Read more
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fn is_destroyed(&self) -> bool

Check to see if a surface is destroyed. Read more
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fn queue_render(&self)

Forces a render signal emission for @self to be scheduled. Read more
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fn request_layout(&self)

Request a layout phase from the surface’s frame clock. Read more
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fn set_cursor(&self, cursor: Option<&Cursor>)

Sets the default mouse pointer for a Surface. Read more
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fn set_device_cursor(&self, device: &impl IsA<Device>, cursor: &Cursor)

Sets a specific Cursor for a given device when it gets inside @self. Read more
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fn set_input_region(&self, region: &Region)

Apply the region to the surface for the purpose of event handling. Read more
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fn set_opaque_region(&self, region: Option<&Region>)

Marks a region of the Surface as opaque. Read more
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fn connect_enter_monitor<F: Fn(&Self, &Monitor) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when @surface starts being present on the monitor. Read more
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fn connect_event<F: Fn(&Self, &Event) -> bool + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when GDK receives an input event for @surface. Read more
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fn connect_layout<F: Fn(&Self, i32, i32) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when the size of @surface is changed, or when relayout should be performed. Read more
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fn connect_leave_monitor<F: Fn(&Self, &Monitor) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when @surface stops being present on the monitor. Read more
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fn connect_render<F: Fn(&Self, &Region) -> bool + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when part of the surface needs to be redrawn. Read more
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fn connect_cursor_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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

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

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

Available on crate feature v4_12 only.
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fn connect_scale_factor_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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

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impl<O> SurfaceExtManual for O
where O: IsA<Surface>,

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fn create_similar_surface( &self, content: Content, width: i32, height: i32 ) -> Surface

Create a new Cairo surface that is as compatible as possible with the given @self. Read more
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fn translate_coordinates(&self, to: &Surface, x: f64, y: f64) -> bool

Translates coordinates between two surfaces. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TransparentType for T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for T
where T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Super
where Super: IsA<Super>, Sub: IsA<Super>,