Struct wayland_server::protocol::wl_data_device_manager::DndAction [−][src]
pub struct DndAction { /* fields omitted */ }
Expand description
drag and drop actions
This is a bitmask of the available/preferred actions in a drag-and-drop operation.
In the compositor, the selected action is a result of matching the actions offered by the source and destination sides. “action” events with a “none” action will be sent to both source and destination if there is no match. All further checks will effectively happen on (source actions ∩ destination actions).
In addition, compositors may also pick different actions in reaction to key modifiers being pressed. One common design that is used in major toolkits (and the behavior recommended for compositors) is:
- If no modifiers are pressed, the first match (in bit order) will be used.
- Pressing Shift selects “move”, if enabled in the mask.
- Pressing Control selects “copy”, if enabled in the mask.
Behavior beyond that is considered implementation-dependent. Compositors may for example bind other modifiers (like Alt/Meta) or drags initiated with other buttons than BTN_LEFT to specific actions (e.g. “ask”).
Implementations
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
Returns true
if there are flags common to both self
and other
.
Returns true
all of the flags in other
are contained within self
.
Trait Implementations
Disables all flags disabled in the set.
Adds the set of flags.
Toggles the set of flags.
Extends a collection with the contents of an iterator. Read more
extend_one
)Extends a collection with exactly one element.
extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Disables all flags enabled in the set.
Auto Trait Implementations
impl RefUnwindSafe for DndAction
impl UnwindSafe for DndAction
Blanket Implementations
Mutably borrows from an owned value. Read more
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more