#[repr(transparent)]pub struct Drag { /* private fields */ }
Expand description
The Drag
object represents the source of an ongoing DND operation.
A Drag
is created when a drag is started, and stays alive for duration of
the DND operation. After a drag has been started with begin()
,
the caller gets informed about the status of the ongoing drag operation
with signals on the Drag
object.
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.
Properties
actions
The possible actions of this drag.
Readable | Writeable
content
The ContentProvider
.
Readable | Writeable | Construct Only
device
The Device
that is performing the drag.
Readable | Writeable | Construct Only
display
The Display
that the drag belongs to.
Readable
formats
The possible formats that the drag can provide its data in.
Readable | Writeable | Construct Only
selected-action
The currently selected action of the drag.
Readable | Writeable
surface
The surface where the drag originates.
Readable | Writeable | Construct Only
Signals
cancel
Emitted when the drag operation is cancelled.
dnd-finished
Emitted when the destination side has finished reading all data.
The drag object can now free all miscellaneous data.
drop-performed
Emitted when the drop operation is performed on an accepting client.
Implements
Implementations§
source§impl Drag
impl Drag
pub const NONE: Option<&'static Drag> = None
sourcepub fn begin(
surface: &impl IsA<Surface>,
device: &impl IsA<Device>,
content: &impl IsA<ContentProvider>,
actions: DragAction,
dx: f64,
dy: f64
) -> Option<Drag>
pub fn begin( surface: &impl IsA<Surface>, device: &impl IsA<Device>, content: &impl IsA<ContentProvider>, actions: DragAction, dx: f64, dy: f64 ) -> Option<Drag>
Starts a drag and creates a new drag context for it.
This function is called by the drag source. After this call, you
probably want to set up the drag icon using the surface returned
by DragExt::drag_surface()
.
This function returns a reference to the Drag
object,
but GTK keeps its own reference as well, as long as the DND operation
is going on.
Note: if @actions include DragAction::MOVE
, you need to listen for
the dnd-finished
signal and delete the data at
the source if DragExt::selected_action()
returns
DragAction::MOVE
.
surface
the source surface for this drag
device
the device that controls this drag
content
the offered content
actions
the actions supported by this drag
dx
the x offset to @device’s position where the drag nominally started
dy
the y offset to @device’s position where the drag nominally started
Returns
a newly created Drag
Trait Implementations§
source§impl HasParamSpec for Drag
impl HasParamSpec for Drag
source§impl Ord for Drag
impl Ord for Drag
source§impl<OT: ObjectType> PartialEq<OT> for Drag
impl<OT: ObjectType> PartialEq<OT> for Drag
source§impl<OT: ObjectType> PartialOrd<OT> for Drag
impl<OT: ObjectType> PartialOrd<OT> for Drag
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 Drag
impl StaticType for Drag
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for Drag
Auto Trait Implementations§
impl RefUnwindSafe for Drag
impl !Send for Drag
impl !Sync for Drag
impl Unpin for Drag
impl UnwindSafe for Drag
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