Struct RegionSelection 

pub struct RegionSelection {
    pub area: WidgetId,
    pub anchor: RegionPoint,
    pub extent: RegionPoint,
    pub ranges: HashMap<WidgetId, (usize, usize)>,
    pub all: bool,
    pub bar: bool,
    pub handles: bool,
    pub start: Option<RegionPoint>,
    pub end: Option<RegionPoint>,
}

The selection an area holds: where the press landed, where the pointer is now, and what that makes selected in each text.

Fields

area: WidgetId

The area the selection belongs to: a drag never carries it into another.

anchor: RegionPoint

Where the press landed.

extent: RegionPoint

Where the pointer is now.

ranges: HashMap<WidgetId, (usize, usize)>

The (start, end) character range selected in each text that has one.

all: bool

Whether every text of the area is selected whole — Select all would do nothing.

bar: bool

Whether the bar (Copy, Select all) shows over the selection: one made with a finger does, one made with a mouse does not. Put away while a handle is dragged.

handles: bool

Whether the selection carries handles at its two ends, for a finger to widen or narrow it: one made with a finger does.

start: Option<RegionPoint>

Where the selection begins, in reading order — whichever of anchor and extent comes first — as the first character selected. None when nothing is.

end: Option<RegionPoint>

Where it ends, in reading order, as the boundary after the last character selected.

Implementations

impl RegionSelection

pub fn new( area: WidgetId, anchor: RegionPoint, extent: RegionPoint, stops: &[(WidgetId, usize)], ) -> Self

The selection from anchor to extent over stops, the area’s texts in order, each with its length in characters.

pub fn with_bar(self, bar: bool) -> Self

This selection as one made with a finger, with its bar and its handles — or as one made with a mouse, with neither.

pub fn is_empty(&self) -> bool

Whether anything is selected: an end that has not moved from the other is a caret, which is not.

Trait Implementations

impl Clone for RegionSelection

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RegionSelection

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

Formats the value using the given formatter.

impl PartialEq for RegionSelection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RegionSelection