Enum DragScroll 

pub enum DragScroll {
    Never,
    OnTouch,
    Always,
}

When ScrollArea should let the user scroll by dragging the content.

Variants

Never

Never scroll on pointer drag.

OnTouch

Only allow drag-to-scroll when a touch screen is detected (see crate::InputState::has_touch_screen). The recommended default.

Always

Always allow drag-to-scroll, even with a mouse.

Implementations

impl DragScroll

pub fn enabled(self, ctx: &Context) -> bool

Whether drag-to-scroll is currently active.

Checks if we have a touch screen (via crate::InputState::has_touch_screen) when self is Self::OnTouch.

Trait Implementations

impl BitOr for DragScroll

fn bitor(self, rhs: Self) -> Self::Output

Combine two settings, picking the more permissive one. Always > OnTouch > Never.

type Output = DragScroll

The resulting type after applying the | operator.

impl Clone for DragScroll

fn clone(&self) -> DragScroll

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DragScroll

impl Debug for DragScroll

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

Formats the value using the given formatter.

impl Default for DragScroll

fn default() -> DragScroll

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DragScroll

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for DragScroll

impl PartialEq for DragScroll

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for DragScroll

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DragScroll