Struct wayland_server::protocol::wl_data_device_manager::DndAction

pub struct DndAction { /* fields omitted */ }

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

impl DndAction

pub const None: DndAction

no action

pub const Copy: DndAction

copy action

pub const Move: DndAction

move action

pub const Ask: DndAction

ask action

pub const fn empty() -> DndAction

Returns an empty set of flags

pub const fn all() -> DndAction

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<DndAction>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> DndAction

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> DndAction

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: DndAction) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: DndAction) -> bool

Returns true all of the flags in other are contained within self.

pub fn insert(&mut self, other: DndAction)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: DndAction)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: DndAction)

Toggles the specified flags in-place.

pub fn set(&mut self, other: DndAction, value: bool)

Inserts or removes the specified flags depending on the passed value.

impl DndAction

pub fn from_raw(n: u32) -> Option<DndAction>

pub fn to_raw(&self) -> u32

Trait Implementations

impl Binary for DndAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl BitAnd<DndAction> for DndAction

type Output = DndAction

The resulting type after applying the & operator.

fn bitand(self, other: DndAction) -> DndAction

Returns the intersection between the two sets of flags.

impl BitAndAssign<DndAction> for DndAction

fn bitand_assign(&mut self, other: DndAction)

Disables all flags disabled in the set.

impl BitOr<DndAction> for DndAction

type Output = DndAction

The resulting type after applying the | operator.

fn bitor(self, other: DndAction) -> DndAction

Returns the union of the two sets of flags.

impl BitOrAssign<DndAction> for DndAction

fn bitor_assign(&mut self, other: DndAction)

Adds the set of flags.

impl BitXor<DndAction> for DndAction

type Output = DndAction

The resulting type after applying the ^ operator.

fn bitxor(self, other: DndAction) -> DndAction

Returns the left flags, but with all the right flags toggled.

impl BitXorAssign<DndAction> for DndAction

fn bitxor_assign(&mut self, other: DndAction)

Toggles the set of flags.

impl Clone for DndAction

fn clone(&self) -> DndAction

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for DndAction

impl Debug for DndAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for DndAction

impl Extend<DndAction> for DndAction

fn extend<T: IntoIterator<Item = DndAction>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

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

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

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

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<DndAction> for DndAction

fn from_iter<T: IntoIterator<Item = DndAction>>(iterator: T) -> DndAction

Creates a value from an iterator.

impl Hash for DndAction

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl LowerHex for DndAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Not for DndAction

type Output = DndAction

The resulting type after applying the ! operator.

fn not(self) -> DndAction

Returns the complement of this set of flags.

impl Octal for DndAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Ord for DndAction

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

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

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

Restrict a value to a certain interval.

impl PartialEq<DndAction> for DndAction

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

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

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

This method tests for !=.

impl PartialOrd<DndAction> for DndAction

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

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

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

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

fn le(&self, other: &DndAction) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

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

fn ge(&self, other: &DndAction) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for DndAction

impl StructuralPartialEq for DndAction

impl Sub<DndAction> for DndAction

type Output = DndAction

The resulting type after applying the - operator.

fn sub(self, other: DndAction) -> DndAction

Returns the set difference of the two sets of flags.

impl SubAssign<DndAction> for DndAction

fn sub_assign(&mut self, other: DndAction)

Disables all flags enabled in the set.

impl UpperHex for DndAction

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.