W7 of the oak task list. OakTheme::olive_dark/olive_light translate oak's
palette.ini files into a structured theme (window/base/alternate/accent/
link/disabled plus a derived border). apply_theme swaps gpui's GlobalColors
so every widget reading cx.default_colors() re-themes immediately, and
stores the full theme in a ThemeGlobal. Palette contrast and mapping are
unit-tested, with a gpui::test verifying the runtime switch;
examples/themes.rs toggles between the two themes live. 101 widget tests
pass.
W6 of the oak task list. scopes::math is a pure, unit-tested core
(histogram binning, waveform min/max envelopes, vectorscope chroma
projection, meter segment math, peak-hold decay) feeding three canvas
widgets - Histogram, Waveform, Vectorscope - generic over LumaDataSource /
ChromaDataSource traits the host implements over its frame buffers, plus an
AudioLevelMeter over AudioMeterDataSource with lit segments and a peak
marker. examples/scopes.rs drives all four from mock signals. 96 widget
tests pass.
W5 companion widget. ProjectExplorer is data-agnostic over a
ProjectDataSource trait: a tree view with expandable folders and
double-click-to-open, an icon grid with thumbnails (img/placeholder
swatch), a view switcher, and file-drop import via on_drop (platform
FileDrop becomes an internal drag), emitting OpenRequested /
FileDropRequested / ViewChanged requests. flatten_tree (pure) is
unit-tested; examples/project_explorer.rs demos a mock project. 89 widget
tests pass.
Two changes landing W4 of the oak task list:
gpui_macos: the Surface renderer only accepted biplanar YUV 4:2:0 pixel
buffers, so engine BGRA frames could not be displayed. SurfaceBounds gains an
is_bgra flag and draw_surfaces now creates a single BGRA8Unorm texture (and
the fragment shader swizzles it to RGBA) for 32BGRA buffers, keeping the
YUV path unchanged. Verified by running the W3 surface_bridge demo.
gpui_widgets::viewer: ViewerWidget with a pure TransportState machine
(advance/loop/step/in-out, unit-tested), a PlaybackClock trait the host
implements over the engine, a ~60Hz polling ticker, a transport bar emitting
ViewerEvent requests, timecode via gpui::timeline::time, and safe-frame/zoom
toggles. examples/viewer.rs shows a mock clock with generated macOS test
frames. 87 widget + 182 gpui tests pass.
W3 of the oak task list. SurfaceBridge wraps an engine wgpu (Metal) texture
into an IOSurface-backed CVPixelBuffer for gpui's Surface element: a reused
pixel buffer created with kCVPixelBufferIOSurfacePropertiesKey +
MetalCompatibility, aliased to a Metal texture via gpui_media's
CVMetalTextureCache, with a GPU-to-GPU MTLBlitCommandEncoder copy (a
device.poll(Wait) before the blit keeps the v1 path correct and
synchronous). A CPU readback fallback (stage_readback/finish_readback)
works on any backend. The surface_bridge demo (demo feature) streams a
moving test pattern through the bridge into a window and prints FPS;
smoke-verified on macOS at 1280x720. Windows/Linux paths are left for a
follow-up (noted in docs/zh). 2 tests pass.
W2 of the oak task list. A pure menu model (nesting, disabled items,
separators, checked state, wrap-around keyboard navigation arithmetic) feeds
two views: a MenuBar with drop-down popups and a right-click ContextMenu,
both built on anchored+deferred with keyboard navigation (up/down/enter/
escape), hover-opened submenus, check marks, shortcut labels and request
events. The Modal framework provides the mask, title bar, content slot and
button row with escape/enter defaults; message_box (info/warning/error),
progress_dialog (driven by ProgressContent) and file_dialog (native gpui
fallback - the fork has no prompt_for_paths platform API) are built on it.
A menus_dialogs example demonstrates everything. 79 tests pass.
Adds a parameter-panel example (cargo run -p gpui_widgets --example controls)
that demonstrates every form control: float/rational/angle sliders with
keying diamonds, a spinbox, a combo box, checkboxes, a radio group, a color
picker and a curve editor, printing each edit as a request event. Marks all
W1 checklist items done in docs/zh/oak-app-rewrite.md. 65 tests pass.
Mike-Solar