Struct gdk::DragContext[−][src]

Returns the window on which the drag icon should be rendered during the drag operation. Note that the window may not be available until the drag operation has begun. GDK will move the window in accordance with the ongoing drag operation. The window is owned by self and will be destroyed when the drag operation is over.

Returns

the drag window, or None

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pub fn protocol(&self) -> DragProtocol

Returns the drag protocol that is used by this context.

Returns

the drag protocol

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pub fn selected_action(&self) -> DragAction

Determines the action chosen by the drag destination.

Returns

a DragAction value

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pub fn source_window(&self) -> Window

Returns the Window where the DND operation started.

Returns

a Window

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pub fn suggested_action(&self) -> DragAction

Determines the suggested drag action of the context.

Returns

a DragAction value

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pub fn list_targets(&self) -> Vec<Atom>

Retrieves the list of targets of the context.

Returns

a GList of targets

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pub fn manage_dnd(&self, ipc_window: &Window, actions: DragAction) -> bool

This is supported on crate feature v3_20 only.

Requests the drag and drop operation to be managed by self. When a drag and drop operation becomes managed, the DragContext will internally handle all input and source-side EventDND events as required by the windowing system.

Once the drag and drop operation is managed, the drag context will emit the following signals:

The signal::DragContext::action-changed signal whenever the final action to be performed by the drag and drop operation changes.
The signal::DragContext::drop-performed signal after the user performs the drag and drop gesture (typically by releasing the mouse button).
The signal::DragContext::dnd-finished signal after the drag and drop operation concludes (after all GdkSelection transfers happen).
The signal::DragContext::cancel signal if the drag and drop operation is finished but doesn’t happen over an accepting destination, or is cancelled through other means.

`ipc_window`

Window to use for IPC messaging/events

`actions`

the actions supported by the drag source

Returns

true if the drag and drop operation is managed.

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pub fn set_device(&self, device: &Device)

Associates a Device to self, so all Drag and Drop events for self are emitted as if they came from this device.

`device`

a Device

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pub fn set_hotspot(&self, hot_x: i32, hot_y: i32)

This is supported on crate feature v3_20 only.

Sets the position of the drag window that will be kept under the cursor hotspot. Initially, the hotspot is at the top left corner of the drag window.

`hot_x`

x coordinate of the drag window hotspot

`hot_y`

y coordinate of the drag window hotspot

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

This is supported on crate feature v3_20 only.

A new action is being chosen for the drag and drop operation.

This signal will only be emitted if the DragContext manages the drag and drop operation. See manage_dnd() for more information.

`action`

The action currently chosen

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

This is supported on crate feature v3_20 only.

The drag and drop operation was cancelled.

This signal will only be emitted if the DragContext manages the drag and drop operation. See manage_dnd() for more information.

`reason`

The reason the context was cancelled

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

This is supported on crate feature v3_20 only.

The drag and drop operation was finished, the drag destination finished reading all data. The drag source can now free all miscellaneous data.

This signal will only be emitted if the DragContext manages the drag and drop operation. See manage_dnd() for more information.

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pub fn connect_drop_performed<F: Fn(&Self, i32) + 'static>(
    &self, 
    f: F
) -> SignalHandlerId

This is supported on crate feature v3_20 only.

The drag and drop operation was performed on an accepting client.

This signal will only be emitted if the DragContext manages the drag and drop operation. See manage_dnd() for more information.

`time`

the time at which the drop happened.

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impl DragContext

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pub fn drag_get_selection(&self) -> Atom

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pub fn drag_abort(&self, time_: u32)

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pub fn drop_reply(&self, accepted: bool, time_: u32)

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pub fn drop(&self, time_: u32)

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pub fn drag_find_window_for_screen(
    &self, 
    drag_window: &Window, 
    screen: &Screen, 
    x_root: i32, 
    y_root: i32
) -> (Option<Window>, DragProtocol)

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pub fn drag_motion(
    &self, 
    dest_window: &Window, 
    protocol: DragProtocol, 
    x_root: i32, 
    y_root: i32, 
    suggested_action: DragAction, 
    possible_actions: DragAction, 
    time_: u32
) -> bool

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pub fn drop_finish(&self, success: bool, time_: u32)

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pub fn drag_status(&self, action: DragAction, time_: u32)

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pub fn drag_drop_succeeded(&self) -> bool

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pub fn drag_begin(window: &Window, targets: &[&Atom]) -> Option<DragContext>

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pub fn drag_begin_for_device<P: IsA<Device>>(
    window: &Window, 
    device: &P, 
    targets: &[&Atom]
) -> Option<DragContext>

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pub fn drag_begin_from_point<P: IsA<Device>>(
    window: &Window, 
    device: &P, 
    targets: &[&Atom], 
    x_root: i32, 
    y_root: i32
) -> Option<DragContext>

This is supported on crate feature v3_20 only.

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pub fn drag_drop_done(&self, success: bool)

This is supported on crate feature v3_20 only.

Trait Implementations

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impl Clone for DragContext

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fn clone(&self) -> DragContext

Returns a copy of the value. Read more

1.0.0[src]

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

Performs copy-assignment from source. Read more

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impl Debug for DragContext

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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 Display for DragContext

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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 Hash for DragContext

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

Feeds this value into the given Hasher. Read more

1.3.0[src]

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

Feeds a slice of this type into the given Hasher. Read more

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impl Ord for DragContext

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

This method returns an Ordering between self and other. Read more

1.21.0[src]

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

Compares and returns the maximum of two values. Read more

1.21.0[src]

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

Compares and returns the minimum of two values. Read more

1.50.0[src]

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

Restrict a value to a certain interval. Read more

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impl ParentClassIs for DragContext

type Parent = Object

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impl<T: ObjectType> PartialEq<T> for DragContext

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

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0[src]

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

This method tests for !=.

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impl<T: ObjectType> PartialOrd<T> for DragContext

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

This method returns an ordering between self and other values if one exists. Read more

1.0.0[src]

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

This method tests less than (for self and other) and is used by the < operator. Read more

1.0.0[src]

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

1.0.0[src]

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

This method tests greater than (for self and other) and is used by the > operator. Read more

1.0.0[src]

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 DragContext

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fn static_type() -> Type

Returns the type identifier of Self.

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impl Eq for DragContext

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impl StructuralEq for DragContext

Auto Trait Implementations

impl RefUnwindSafe for DragContext

impl !Send for DragContext

impl !Sync for DragContext

impl Unpin for DragContext

impl UnwindSafe for DragContext

Blanket Implementations

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impl<T> Any for T where
    T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
    T: ?Sized,

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pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
    T: ?Sized,

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pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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

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fn upcast<T>(self) -> T where
    Self: IsA<T>,
    T: ObjectType,

Upcasts an object to a superclass or interface T. Read more

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fn upcast_ref<T>(&self) -> &T where
    Self: IsA<T>,
    T: ObjectType,

Upcasts an object to a reference of its superclass or interface T. Read more

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fn downcast<T>(self) -> Result<T, Self> where
    Self: CanDowncast<T>,
    T: ObjectType,

Tries to downcast to a subclass or interface implementor T. Read more

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fn downcast_ref<T>(&self) -> Option<&T> where
    Self: CanDowncast<T>,
    T: ObjectType,

Tries to downcast to a reference of its subclass or interface implementor T. Read more

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fn dynamic_cast<T>(self) -> Result<T, Self> where
    T: ObjectType,

Tries to cast to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

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fn dynamic_cast_ref<T>(&self) -> Option<&T> where
    T: ObjectType,

Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

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unsafe fn unsafe_cast<T>(self) -> T where
    T: ObjectType,

Casts to T unconditionally. Read more

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unsafe fn unsafe_cast_ref<T>(&self) -> &T where
    T: ObjectType,

Casts to &T unconditionally. Read more

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impl<T> From<T> for T

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pub fn from(t: T) -> T

Performs the conversion.

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

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pub fn into(self) -> U

Performs the conversion.

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

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pub 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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pub fn type_(&self) -> Type

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pub fn object_class(&self) -> &Class<Object>

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pub fn class(&self) -> &Class<T> where
    T: IsClass,

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pub fn class_of<U>(&self) -> Option<&Class<U>> where
    U: IsClass,

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pub fn interface<U>(&self) -> Option<InterfaceRef<'_, U>> where
    U: IsInterface,

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pub fn set_properties(
    &self, 
    property_values: &[(&str, &dyn ToValue)]
) -> Result<(), BoolError>

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pub fn set_properties_from_value(
    &self, 
    property_values: &[(&str, Value)]
) -> Result<(), BoolError>

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pub fn set_property<'a, N, V>(
    &self, 
    property_name: N, 
    value: V
) -> Result<(), BoolError> where
    N: Into<&'a str>,
    V: ToValue,

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pub fn set_property_from_value<'a, N>(
    &self, 
    property_name: N, 
    value: &Value
) -> Result<(), BoolError> where
    N: Into<&'a str>,

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pub fn property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
    N: Into<&'a str>,

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pub unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where
    QD: 'static,

Safety Read more

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pub unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>> where
    QD: 'static,

Safety Read more

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pub unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where
    QD: 'static,

Safety Read more

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pub unsafe fn set_data<QD>(&self, key: &str, value: QD) where
    QD: 'static,

Safety Read more

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pub unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>> where
    QD: 'static,

Safety Read more

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pub unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where
    QD: 'static,

Safety Read more

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pub fn block_signal(&self, handler_id: &SignalHandlerId)

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pub fn unblock_signal(&self, handler_id: &SignalHandlerId)

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pub fn stop_signal_emission(&self, signal_name: &str)

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pub fn disconnect(&self, handler_id: SignalHandlerId)

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pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
    F: 'static + Fn(&T, &ParamSpec) + Send + Sync,

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pub fn connect_notify_local<F>(
    &self, 
    name: Option<&str>, 
    f: F
) -> SignalHandlerId where
    F: 'static + Fn(&T, &ParamSpec),

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pub unsafe fn connect_notify_unsafe<F>(
    &self, 
    name: Option<&str>, 
    f: F
) -> SignalHandlerId where
    F: Fn(&T, &ParamSpec),

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pub fn notify<'a, N>(&self, property_name: N) where
    N: Into<&'a str>,

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pub fn notify_by_pspec(&self, pspec: &ParamSpec)

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pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
    N: Into<&'a str>,

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pub fn property_type<'a, N>(&self, property_name: N) -> Option<Type> where
    N: Into<&'a str>,

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pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
    N: Into<&'a str>,

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pub fn list_properties(&self) -> Vec<ParamSpec, Global>

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pub fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

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pub fn connect<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
    N: Into<&'a str>,

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pub fn connect_id<F>(
    &self, 
    signal_id: SignalId, 
    details: Option<Quark>, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Same as connect but takes a SignalId instead of a signal name.

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pub fn connect_local<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + 'static,
    N: Into<&'a str>,

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pub fn connect_local_id<F>(
    &self, 
    signal_id: SignalId, 
    details: Option<Quark>, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + 'static,

Same as connect_local but takes a SignalId instead of a signal name.

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pub unsafe fn connect_unsafe<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value>,
    N: Into<&'a str>,

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pub unsafe fn connect_unsafe_id<F>(
    &self, 
    signal_id: SignalId, 
    details: Option<Quark>, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value>,

Same as connect_unsafe but takes a SignalId instead of a signal name.

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pub fn emit(
    &self, 
    signal_id: SignalId, 
    args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError>

Emit signal by signal id.

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pub fn emit_with_details(
    &self, 
    signal_id: SignalId, 
    details: Quark, 
    args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError>

Emit signal with details by signal id.

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pub fn emit_by_name<'a, N>(
    &self, 
    signal_name: N, 
    args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
    N: Into<&'a str>,

Emit signal by it’s name.

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pub fn downgrade(&self) -> WeakRef<T>

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pub fn bind_property<'a, O, N, M>(
    &'a self, 
    source_property: N, 
    target: &'a O, 
    target_property: M
) -> BindingBuilder<'a> where
    O: ObjectType,
    M: Into<&'a str>,
    N: Into<&'a str>,

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pub fn ref_count(&self) -> u32

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pub fn emit_with_values(
    &self, 
    signal_id: SignalId, 
    args: &[Value]
) -> Result<Option<Value>, BoolError>

Same as emit but takes Value for the arguments.

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pub fn emit_by_name_with_values<'a, N>(
    &self, 
    signal_name: N, 
    args: &[Value]
) -> Result<Option<Value>, BoolError> where
    N: Into<&'a str>,

Same as emit_by_name but takes Value for the arguments.

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pub fn emit_with_details_and_values(
    &self, 
    signal_id: SignalId, 
    details: Quark, 
    args: &[Value]
) -> Result<Option<Value>, BoolError>

Same as emit_with_details but takes Value for the arguments.

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impl<T> ToOwned for T where
    T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T> ToSendValue for T where
    T: Send + ToValue + ?Sized,

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pub fn to_send_value(&self) -> SendValue

Returns a SendValue clone of self.

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impl<T> ToString for T where
    T: Display + ?Sized,

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pub default fn to_string(&self) -> String

Converts the given value to a String. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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

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

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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

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impl<'a, T, C> FromValueOptional<'a> for T where
    C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError>,
    T: FromValue<'a, Checker = C>,