#[repr(transparent)]pub struct Drop { /* private fields */ }Expand description
The Drop object represents the target of an ongoing DND operation.
Possible drop sites get informed about the status of the ongoing drag
operation with events of type EventType::DragEnter, EventType::DragLeave,
EventType::DragMotion and EventType::DropStart. The Drop object can be obtained
from these Event types using DNDEvent::drop().
The actual data transfer is initiated from the target side via an async
read, using one of the Drop methods for this purpose:
read_async() or read_value_async().
GTK provides a higher level abstraction based on top of these functions, and so they are not normally needed in GTK applications. See the “Drag and Drop” section of the GTK documentation for more information.
This is an Abstract Base Class, you cannot instantiate it.
Implementations§
source§impl Drop
impl Drop
sourcepub fn finish(&self, action: DragAction)
pub fn finish(&self, action: DragAction)
sourcepub fn actions(&self) -> DragAction
pub fn actions(&self) -> DragAction
Returns the possible actions for this Drop.
If this value contains multiple actions - i.e.
DragAction::is_unique() returns false for the result -
finish() must choose the action to use when
accepting the drop. This will only happen if you passed
DragAction::ASK as one of the possible actions in
status(). DragAction::ASK itself will not
be included in the actions returned by this function.
This value may change over the lifetime of the Drop
both as a response to source side actions as well as to calls to
status() or finish(). The source
side will not change this value anymore once a drop has started.
Returns
The possible GdkDragActions
sourcepub fn formats(&self) -> ContentFormats
pub fn formats(&self) -> ContentFormats
Returns the ContentFormats that the drop offers the data
to be read in.
Returns
The possible ContentFormats
sourcepub fn read_value_async<P: FnOnce(Result<Value, Error>) + 'static>(
&self,
type_: Type,
io_priority: Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: P
)
pub fn read_value_async<P: FnOnce(Result<Value, Error>) + 'static>(
&self,
type_: Type,
io_priority: Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: P
)
Asynchronously request the drag operation’s contents converted to the given @type_.
When the operation is finished @callback will be called. You must
then call Gdk::Drop::read_value_finish() to get the resulting
GValue.
For local drag-and-drop operations that are available in the given
GType, the value will be copied directly. Otherwise, GDK will
try to use content_deserialize_async() to convert the data.
type_
a GType to read
io_priority
the I/O priority of the request.
cancellable
optional GCancellable object, None to ignore.
callback
callback to call when the request is satisfied
pub fn read_value_future(
&self,
type_: Type,
io_priority: Priority
) -> Pin<Box_<dyn Future<Output = Result<Value, Error>> + 'static>>
sourcepub fn status(&self, actions: DragAction, preferred: DragAction)
pub fn status(&self, actions: DragAction, preferred: DragAction)
Selects all actions that are potentially supported by the destination.
When calling this function, do not restrict the passed in actions to
the ones provided by actions(). Those actions may
change in the future, even depending on the actions you provide here.
The @preferred action is a hint to the drag-and-drop mechanism about which action to use when multiple actions are possible.
This function should be called by drag destinations in response to
EventType::DragEnter or EventType::DragMotion events. If the destination does
not yet know the exact actions it supports, it should set any possible
actions first and then later call this function again.
actions
Supported actions of the destination, or 0 to indicate that a drop will not be accepted
preferred
A unique action that’s a member of @actions indicating the preferred action
pub fn connect_display_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
source§impl Drop
impl Drop
sourcepub fn read_async<Q: FnOnce(Result<(InputStream, GString), Error>) + 'static>(
&self,
mime_types: &[&str],
io_priority: Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: Q
)
pub fn read_async<Q: FnOnce(Result<(InputStream, GString), Error>) + 'static>(
&self,
mime_types: &[&str],
io_priority: Priority,
cancellable: Option<&impl IsA<Cancellable>>,
callback: Q
)
Asynchronously read the dropped data from a Drop
in a format that complies with one of the mime types.
mime_types
pointer to an array of mime types
io_priority
the I/O priority for the read operation
cancellable
optional GCancellable object
callback
a GAsyncReadyCallback to call when
the request is satisfied
pub fn read_future(
&self,
mime_types: &[&str],
io_priority: Priority
) -> Pin<Box<dyn Future<Output = Result<(InputStream, GString), Error>> + 'static>>
Trait Implementations§
source§impl Ord for Drop
impl Ord for Drop
source§impl<OT: ObjectType> PartialEq<OT> for Drop
impl<OT: ObjectType> PartialEq<OT> for Drop
source§impl<OT: ObjectType> PartialOrd<OT> for Drop
impl<OT: ObjectType> PartialOrd<OT> for Drop
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self and other) and is used by the <=
operator. Read moresource§impl StaticType for Drop
impl StaticType for Drop
source§fn static_type() -> Type
fn static_type() -> Type
Self.impl Eq for Drop
Auto Trait Implementations§
impl RefUnwindSafe for Drop
impl !Send for Drop
impl !Sync for Drop
impl Unpin for Drop
impl UnwindSafe for Drop
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