Draw the placeholder rectangle (used for image/video overlays in preview).

Draw placeholder waveform bars for audio clips that haven't been analyzed yet.

Duplicate canvas layout for a new element id (right half of a split).

Write the static value of an `EffectKind` parameter at the given param `key`. No-ops for variants that don't own the key.

Distinct colour for effect param curves, cycling through a palette keyed by effect index.

Resolve the static value of an effect parameter (intensity or kind- specific). Used by `app.rs` when constructing a `CurveEditorTarget::EffectParam`.

Reasonable value range for an effect parameter key.

Emit a single actor's filter chunks (chromakey → effect stack → scale/rotate/opacity → overlay onto cursor → attachments). Lifted out of the original

Lazily ensure a custom font family identified by `family_name` is available in `ctx`. After this call, paint code can reference it via `egui::FontFami

Kick off (without waiting for) a processed preload window covering `t`.

Auto-attach a skeleton template for `path` if a sidecar exists and we haven't already loaded it into the scene.

Synchronously extract frames for a clip via `ffmpeg` and `ffprobe`. Invoked from background workers (tokio task or std::thread). Calls `on_done` with

Same as `extract_frames_blocking` but with a configurable max width. Used by the adaptive-quality system to extract at lower resolution when many acto

Fetch one page of the channel preview. `before` corresponds to the `?before=N` pagination param; `None` returns the most recent page.

Like [`Self::find_empty_video_lane_for_range`], but when an anchor lane is supplied it prefers the empty lane closest to that anchor.

Drain `buffer` into a single comma-joined filter chunk attached to `current`. Returns either the unchanged `current` (when the buffer is empty) or the

Look up the decoded RGBA for `path` if cached. The worker calls this before re-decoding from disk so a slider drag avoids re-paying the PNG decode cos

World-space offset of the cropped image centre from the layout anchor.

Resolve the most likely actor owner for an audio row. Primary key is `parent_actor` when present. For unlinked rows we try: 1) id convention `<actor_

Mark download state on canvas session hits and place the image.

Insert a new video track immediately before the first audio track (or at the end if there are no audio tracks). Returns the new track's index. Existin

Inspector row for the actor's playback speed. Uses a `DragValue` (no slider) so the user can dial in arbitrary multipliers without bumping into a fixe

True when the URL can be fetched with a plain HTTP GET (not Telegram `stream/` embed tokens or `blob:` placeholders).

Check whether a given element (by Selection) is "linked" to the currently selected element via skeleton attachment. An element is considered linked if

IPv6 unspecified-address detector. Accepts both the canonical `::` short-form and the `0:0:…:0` long-form (eight zero groups). Pure string compare — n

Translate kf times (LOCAL for overlays / scene-time for actors) to scene-time absolute coords used by the timeline ruler.

Kick off the system-font scan in a background thread. Idempotent — safe to call from app startup and again from the picker. Until the scan finishes `a

Human-readable label for an audio param id. Returns the id back as a fallback for unknown / future ids.

Render a grid of asset cards. Each cell is a square thumbnail with a short label below. The number of columns adapts to the available panel width.

Right-click menu for a library file row / grid cell.

Load chroma sidecar for `path`, falling back to default when absent.

Record the current tab contents as saved (after Save / Open).

Merge two sorted time lists, deduplicating within [`KF_TIME_EPS`].