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
GLib type: GObject with reference counted clone semantics.
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§fn cmp(&self, other: &Self) -> Ordering
fn cmp(&self, other: &Self) -> Ordering
Comparison for two GObjects.
Compares the memory addresses of the provided objects.
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
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
Source§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 Freeze for Drag
impl RefUnwindSafe for Drag
impl !Send for Drag
impl !Sync for Drag
impl Unpin for Drag
impl UnwindSafe for Drag
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)Source§impl<O> DragExt for O
impl<O> DragExt for O
Source§fn actions(&self) -> DragAction
fn actions(&self) -> DragAction
Source§fn content(&self) -> ContentProvider
fn content(&self) -> ContentProvider
Source§fn drag_surface(&self) -> Option<Surface>
fn drag_surface(&self) -> Option<Surface>
Source§fn formats(&self) -> ContentFormats
fn formats(&self) -> ContentFormats
Source§fn selected_action(&self) -> DragAction
fn selected_action(&self) -> DragAction
Source§fn set_hotspot(&self, hot_x: i32, hot_y: i32)
fn set_hotspot(&self, hot_x: i32, hot_y: i32)
Source§fn set_actions(&self, actions: DragAction)
fn set_actions(&self, actions: DragAction)
Source§fn set_selected_action(&self, selected_action: DragAction)
fn set_selected_action(&self, selected_action: DragAction)
Source§fn connect_cancel<F: Fn(&Self, DragCancelReason) + 'static>(
&self,
f: F,
) -> SignalHandlerId
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value], ) -> Option<Value>
Source§fn disconnect(&self, handler_id: SignalHandlerId)
fn disconnect(&self, handler_id: SignalHandlerId)
Source§fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
notify
signal of the object. Read moreSource§fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
notify
signal of the object. Read moreSource§unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F,
) -> SignalHandlerId
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F, ) -> SignalHandlerId
notify
signal of the object. Read more