Struct TimelineState

pub struct TimelineState {

    pub zoom: f32,
    pub scroll_x: f64,
    pub scroll_y: f32,
    pub header_w: f32,
    pub lanes_rect: Rect,
    drag: Option<Drag>,
    user_panned: bool,
    band: Option<(Pos2, bool)>,
    pub selected_marker: Option<u64>,
    rename: Option<(u64, String)>,
    pub last_track: Option<usize>,
    pub sub_h: f32,
    pub sub_sel: Vec<u64>,
    sub_band: Option<(f64, bool)>,
    sub_trim: Option<(u64, bool)>,
}

Fields

zoom: f32

Pixels per second.

scroll_x: f64

Horizontal scroll in seconds at the left edge of the lanes.

scroll_y: f32

Vertical scroll in points.

header_w: f32

Width of the header column in points.

lanes_rect: Rect

Content rect (lanes area, excluding header & ruler) from the last frame — used by the app for file drops.

drag: Option<Drag>

Active move/trim gesture.

user_panned: bool

The user panned/zoomed while playing: stop following the playhead until it is back in view.

band: Option<(Pos2, bool)>

Rubber band in progress: (press origin, add to the selection instead of replacing it).

selected_marker: Option<u64>

Marker picked by the last click (drawn highlighted).

rename: Option<(u64, String)>

Rename buffer for the marker context menu.

last_track: Option<usize>

Track under the last press on the lanes — where Ctrl+V pastes. ponytail: an index, not an id, so removing a track just makes the next paste land on its neighbour.

sub_h: f32

Subtitle lane height (Alt+scroll over the lane resizes it, like tracks).

sub_sel: Vec<u64>

Selected cues on the subtitle lane (band drag / Ctrl+click) — bulk convert/delete targets.

sub_band: Option<(f64, bool)>

Band-select in progress on the subtitle lane: press-origin time and “Shift held” (add to selection).

sub_trim: Option<(u64, bool)>

Cue edge being trimmed on the subtitle lane: (cue id, right edge?).

Implementations

impl TimelineState

pub fn time_at(&self, x: f32) -> f64

Timeline time at an absolute x position (points).

pub fn x_at(&self, t: f64) -> f32

pub fn track_at(&self, y: f32, project: &Project) -> Option<usize>

Track index under an absolute y position (points), given the project (for track heights).

pub fn zoom_to_fit(&mut self, duration: f64, avail_w: f32)

Fit [0, duration] into avail_w points.

pub fn zoom_by(&mut self, factor: f32, anchor_x: Option<f32>)

Multiply zoom, keeping the time under anchor_x (absolute points) fixed if given.

pub fn follow_playhead(&mut self, t: f64)

Scroll so t is visible (used when the playhead runs off-screen while playing). Suspended after a user pan until t is back in view. Scroll t into view unconditionally (an explicit seek: Home/End, prev/next cut, a subtitle click, an MCP playback.seek). Unlike ensure_visible a previous user pan does not suppress it.

pub fn ensure_visible(&mut self, t: f64)

Trait Implementations

impl Default for TimelineState

fn default() -> Self

Returns the “default value” for a type.