Compositor¶

Receives grids from widget-actors, composites by z-order, diffs against previous frame, and writes ANSI output.

actor tag Compositor is
  WidgetParent tag

Implements¶

WidgetParent tag

Constructors¶

create¶

[Source]

new tag create(
  output: TerminalOutput tag,
  width: USize val,
  height: USize val)
: Compositor tag^

Parameters¶

output: TerminalOutput tag
width: USize val
height: USize val

Returns¶

Compositor tag^

Public Behaviours¶

register_root¶

[Source]

Register the root widget at NorthWest filling the full screen. Does not send a resize — the caller must send resize() to the widget directly to ensure correct message ordering.

be register_root(
  widget: Widget tag)

Parameters¶

widget: Widget tag

receive_grid¶

[Source]

Receive an updated grid from a widget. Stores the grid and schedules a deferred recompose if not already pending.

be receive_grid(
  widget: Any tag,
  grid: Grid val)

Parameters¶

widget: Any tag
grid: Grid val

hit_test¶

[Source]

Find the topmost widget at the given screen coordinate and send the result back to the requester.

be hit_test(
  col: USize val,
  row: USize val,
  requester: _HitTestRequester tag)

Parameters¶

col: USize val
row: USize val
requester: _HitTestRequester tag

screen_resize¶

[Source]

Handle terminal resize: update dimensions, clear screen, and recompose.

be screen_resize(
  width: USize val,
  height: USize val)

Parameters¶

width: USize val
height: USize val