Introduce editable text layers: a resizable text box with editable text,
font size, color, font family, and alignment.
Core:
- New TextLayer/TextContent (text_layer.rs), wired into AnyLayer/LayerType
and all the exhaustive match sites; structured so content can be keyframed
later via content_at().
- fonts.rs: thread-local parley FontContext with three bundled fonts
(Liberation Sans/Serif/Mono, SIL OFL), system-font enumeration consolidated
to base families, document-embedded fonts, glyph/caret/selection geometry,
and a background preloader for the picker fonts.
- Rendering via parley layout + Scene::draw_glyphs (renderer.rs); text
composites through the vector path.
- Actions: CreateTextClipAction (vector-layer branch, undoable),
SetTextContentAction, ResizeTextBoxAction.
- .beam font embedding: MediaKind::Font rows (content-hash dedupe) written on
save and registered on load, with bundled-default fallback.
- VectorClip content bounds include text boxes so text-only clips are
selectable/draggable.
Editor:
- Text tool: click empty/raster/video to create a top-level text layer, or a
vector layer to create+enter a clip containing the text; click an existing
box to edit it.
- Hybrid in-place editing: a hidden egui TextEdit drives input/IME/caret while
the text and caret/selection render in Vello; empty just-created layers are
removed on commit.
- Selection outline + 8 resize handles (re-wrap text) with hover cursors;
factored the corner/edge resize-cursor mapping shared with the Transform tool.
- Info panel: edit text, size, color, alignment, box size, and a font-family
picker that previews each entry in its own font (fonts preloaded in the
background to avoid hitches).
Deps: add parley (git, pinned to match vello's peniko); bundle Liberation
fonts under lightningbeam-core/assets/fonts. Gitignore the local
.cargo/config.toml used to select a machine's ffmpeg.
Video was the only media type always kept external (VideoClip.file_path),
so a project with video wasn't self-contained. Now video packs into the
SQLite container under the same large-media policy as audio (pack < 2 GB
unless the user chose Reference), and both the frames and the embedded audio
track decode by streaming directly from the blob — no temp files.
- New crate ffmpeg-blob-io: an AVIOContext-over-Read+Seek shim (BlobInput)
that lets ffmpeg demux from an arbitrary byte source. Isolates all the
unsafe FFI + ffmpeg ABI coupling (version-pinned =8.0.0/=8.0.1). Manual
Drop teardown order; AVSEEK_SIZE restores the read position (FFmpeg assumes
a size query doesn't move it — required for MP4 moov-at-end).
- Schema/save/load: VideoClip.media_id; save_beam packs/references video as
MediaKind::Video (keyed by clip id); load resolves packed vs referenced and
reports missing sources. A packed clip points its linked video-audio pool
entry's media_id at the video row so the audio streams from the same blob.
- Frames: video.rs VideoSource{Path,Packed} threaded through new/seek/scan/
probe/thumbnails (a fresh BlobReader per open); editor builds the source
from current_file_path (now set before register_loaded_videos).
- Audio: VideoAudioReader::open_source via BlobInput; the disk_reader
StreamSource block on packed video-audio is removed; the engine's existing
factory activation routes it unchanged.
Tests: ffmpeg-blob-io AVIO unit tests (WAV via Cursor, seek, open/drop loop);
core packed_video_stream (blob->AVIO->Input) and beam_archive video round-trip;
daw-backend open_source test (compiles; links/runs only off-container).
Runtime-verified: a packed video plays frames + audio after the source file
is removed.
Migrate the .beam container to SQLite and stream media from it instead of
decoding whole files into RAM on import/load.
Container & large files:
- SQLite .beam container (beam_archive) with in-place transactional saves and an
incremental BlobReader; supports both packed (chunked blobs) and referenced
(external path) media, with a user preference + first-import prompt for files
over the large-media threshold.
Audio streaming:
- Stream packed compressed audio on load via an inversion-of-control blob factory
(AudioBlobSourceFactory): daw-backend defines the trait, core implements it
over BlobReader, so the audio engine stays container-agnostic.
- Bulk-activate disk streaming for all loaded clips after SetProject.
- Sample-accurate compressed seek (SeekMode::Accurate; Coarse mislands on VBR).
Video:
- Video frames decoded/streamed on demand; thumbnails generated asynchronously
on a dedicated decoder so import/load never blocks the UI.
- The video's audio track is streamed on demand via an ffmpeg VideoAudioReader
as a separate editable AudioClip (no /tmp WAV extraction).
Waveform overview:
- Streaming min/max LOD pyramid (waveform_pyramid), bounded memory, configurable
floor B; serialized into the container and restored on load (or generated in
the background from the packed blob when absent), so no re-decode on reload.
- GPU min/max upload path; integer-LOD textureLoad fixes zoom-dependent wobble.
Implemented foundational pane system using eframe/egui:
- Workspace structure with lightningbeam-core and lightningbeam-editor
- Layout data structures matching existing JSON schema
- All 8 predefined layouts (Animation, Video Editing, Audio/DAW, etc.)
- Recursive pane rendering with visual dividers
- Layout switcher menu
- Color-coded pane types for visualization
Foundation complete for interactive pane operations (resize, split, join).
Skyler Lehmkuhl