Class: PresentationWaveform

Constructor

Parameters:

Name Type Description

mountEl HTMLElement Container element to render the player into.

ctrl PresentationController Shared controller for hover/select state.

callbacks

object

Event callbacks.

Name	Type	Description
`onRegionHover`	function	Called with segment index when hovering a region.
`onRegionSelect`	function	Called with segment index when a region is clicked.
`onRegionActivate`	function	Called with segment index when playhead enters a region.
`onUserSeek`	function	Called with time in seconds when the user seeks manually.

Repaints the region canvas, drawing one bar per segment coloured by speaker and sized/highlighted according to active, hovered, and selected state.

Initialises WaveSurfer and loads audio from the given project.

Parameters:

Name	Type	Description
`project`	Project	The project whose waveform should be loaded.

Updates the left position of each section-break line based on current scroll and zoom. Called from drawRegions() on every redraw.

Creates (or recreates) the section-break line and label DOM elements inside the waveform area. Called once per load after the waveform is ready.

Triggers a region redraw after the hovered segment changes.

Seeks to the selected segment and triggers a region redraw.

Parameters:

Name	Type	Description
`idx`	number	Segment index to select and seek to.