Struct BoxZoomState 

pub struct BoxZoomState {
    pub active: bool,
    pub start_pos: Option<Pos2>,
    pub curr_pos: Option<Pos2>,
}

Tracks an active box-zoom selection.

The user initiates box zoom by left-clicking when zoom mode is active, then drags to define a rectangular region. On release the chart zooms into the selection.

Fields

active: bool

Whether box zoom is currently active

start_pos: Option<Pos2>

Start position of box drag

curr_pos: Option<Pos2>

Current mouse position during drag

Implementations

impl BoxZoomState

pub fn new() -> Self

Create a new inactive box-zoom state.

pub fn reset(&mut self)

Reset the box-zoom to inactive, clearing start and current positions.

Trait Implementations

impl Clone for BoxZoomState

fn clone(&self) -> BoxZoomState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BoxZoomState

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

Formats the value using the given formatter.

impl Default for BoxZoomState

fn default() -> Self

Returns the “default value” for a type.