refactor(api)!: one namespace per feature, screen split out

Namespaces were shared across features: `settings` was written by core, the
panel and touch, and `input` by touch and buttons. That made "does this
firmware implement the whole feature?" a question no pointer could answer.

Each namespace now belongs to exactly one feature or to core, so a feature is
a provider pointer and the compiler validates completeness:

  gui, node       -> screen, tree, under the screen feature
  settings        -> screen (rotation, theme), sys (timezone),
                     touch (calibration)
  input           -> touch, buttons

Runtime::open() no longer requires a GuiProvider; a firmware without one runs
with no screen/tree globals and reports sys.hasFeature("screen") false.
Rotation is one value again: GuiProvider::setRotation applies and persists, so
an app rotating the panel transiently puts the old value back itself.
This commit is contained in:
2026-08-05 10:26:38 -04:00
parent 445a9b2b8f
commit 75b3a2c490
26 changed files with 556 additions and 626 deletions
+8 -8
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@@ -5,33 +5,33 @@
---@alias Button "up"|"down"|"left"|"right"|"confirm"|"back"
-- Roles, not physical buttons: a device maps whatever hardware it has onto them, and
-- up/down/left/right are the directions node.moveFocus already takes.
-- up/down/left/right are the directions tree.moveFocus already takes.
---@class InputLib
input = input or {}
---@class ButtonsLib
buttons = {}
---Returns the roles this device reports, so an app can label only the actions it has.
---@return Button[]
function input.getButtons() end
function buttons.getAll() end
---Whether any button is held.
---@return boolean
function input.isAnyPressed() end
function buttons.isAnyPressed() end
---Whether a button is held.
---@param button Button
---@return boolean
function input.isPressed(button) end
function buttons.isPressed(button) end
---Whether a button went down since the last poll.
---@param button Button
---@return boolean
function input.wasPressed(button) end
function buttons.wasPressed(button) end
---Whether a button came up since the last poll.
---@param button Button
---@return boolean
function input.wasReleased(button) end
function buttons.wasReleased(button) end
---Fired when a button goes down.
---@param button Button
+164
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@@ -0,0 +1,164 @@
---@meta
-- Generated from native/src/bindings/features/screen/screen.cpp. Do not edit.
-- The panel itself; the widget tree it paints is `tree`, and
-- sys.hasFeature("screen") covers both.
---@alias ScreenColor integer
---@alias ScreenFont integer
---@alias ScreenTextStyle integer
---@class ScreenLib
---@field FONT_SMALL ScreenFont Small auxiliary text.
---@field FONT_UI ScreenFont Normal controls and labels.
---@field FONT_BODY ScreenFont Normal reading text.
---@field FONT_LARGE ScreenFont Headings and prominent values.
---@field STYLE_NORMAL ScreenTextStyle
---@field STYLE_BOLD ScreenTextStyle
screen = {}
screen.FONT_SMALL = 0
screen.FONT_UI = 0
screen.FONT_BODY = 0
screen.FONT_LARGE = 0
screen.STYLE_NORMAL = 0
screen.STYLE_BOLD = 0
---Returns the live frame width.
---@return integer
function screen.getWidth() end
---Returns the live frame height.
---@return integer
function screen.getHeight() end
---Rotates the panel and persists the choice, so there is one rotation
---rather than a live one and a saved one to reconcile.
---@param degrees integer 0, 90, 180, or 270 clockwise.
---@return true? ok
---@return string? error
function screen.setRotation(degrees) end
---Returns the rotation in degrees clockwise.
---@return integer
function screen.getRotation() end
---Returns the saved palette name. Apps read ui.getTheme() instead; this
---is the stored value, which only ui.setTheme() knows how to apply.
---@return string
function screen.getTheme() end
---Persists a palette name without applying it. Call ui.setTheme(), which
---writes through here and then rebuilds the palette and repaints.
---@param theme string
---@return true? ok
---@return string? error
function screen.setTheme(theme) end
---Returns an opaque native color. E-ink implementations quantize RGB to available grayscale.
---@param r integer 0 through 255.
---@param g integer 0 through 255.
---@param b integer 0 through 255.
---@return ScreenColor
function screen.color(r, g, b) end
---Clears the frame.
---@param color? ScreenColor Defaults to white.
function screen.clear(color) end
---Fills a rectangle.
---@param x integer
---@param y integer
---@param w integer
---@param h integer
---@param color ScreenColor
function screen.fillRect(x, y, w, h, color) end
---Outlines a rectangle.
---@param x integer
---@param y integer
---@param w integer
---@param h integer
---@param color ScreenColor
function screen.drawRect(x, y, w, h, color) end
---Draws a line.
---@param x1 integer
---@param y1 integer
---@param x2 integer
---@param y2 integer
---@param color ScreenColor
---@param width? integer Defaults to one pixel.
function screen.drawLine(x1, y1, x2, y2, color, width) end
---Draws a single pixel.
---@param x integer
---@param y integer
---@param color ScreenColor
function screen.drawPixel(x, y, color) end
---Outlines a circle.
---@param x integer Center.
---@param y integer Center.
---@param radius integer
---@param color ScreenColor
---@param width? integer Defaults to one pixel.
function screen.drawCircle(x, y, radius, color, width) end
---Fills a circle.
---@param x integer Center.
---@param y integer Center.
---@param radius integer
---@param color ScreenColor
---@param background? ScreenColor Surface behind an anti-aliased edge.
function screen.fillCircle(x, y, radius, color, background) end
---Draws an anti-aliased rounded fill, optional gradient, and optional border in one pass.
---@param x integer
---@param y integer
---@param w integer
---@param h integer
---@param radius integer
---@param background ScreenColor Surface behind the anti-aliased edge.
---@param top? ScreenColor Fill, or gradient top; omitted for no fill.
---@param bottom? ScreenColor Gradient bottom; defaults to top. Panels without a gradient use top.
---@param border? ScreenColor Omitted for no border.
function screen.roundRect(x, y, w, h, radius, background, top, bottom, border) end
---Fills a polygon.
---@param xs integer[]
---@param ys integer[]
---@param color ScreenColor
function screen.fillPolygon(xs, ys, color) end
---Draws a bitmap.
---@param path string Absolute BMP path.
---@param x? integer Left edge; defaults to centered.
---@param y? integer Top edge; defaults to centered.
---@param maxWidth? integer Defaults to panel width.
---@param maxHeight? integer Defaults to panel height.
---@return true? ok
---@return string? error
function screen.drawBmp(path, x, y, maxWidth, maxHeight) end
---Measures a text run.
---@param font ScreenFont Use a named screen.FONT_* role.
---@param text string
---@param style? ScreenTextStyle Defaults to screen.STYLE_NORMAL.
---@return integer
function screen.getTextWidth(font, text, style) end
---Returns the line height of a font role.
---@param font ScreenFont Use a named screen.FONT_* role.
---@param style? ScreenTextStyle Defaults to screen.STYLE_NORMAL.
---@return integer
function screen.getFontHeight(font, style) end
---Draws a text run with its top-left corner at x, y.
---@param font ScreenFont Use a named screen.FONT_* role.
---@param x integer Left edge.
---@param y integer Top edge.
---@param text string
---@param color? ScreenColor Defaults to black.
---@param style? ScreenTextStyle Defaults to screen.STYLE_NORMAL.
---@param background? ScreenColor Omitted for transparent text.
function screen.drawText(font, x, y, text, color, style, background) end
+155
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@@ -0,0 +1,155 @@
---@meta
-- Generated from native/src/bindings/features/screen/tree.cpp. Do not edit.
---@alias NodeId integer
---@alias NodeType "box"|"text"|"button"|"custom"
---@alias NodeDirection "up"|"down"|"left"|"right"
---@class NodeSpec
---@field type NodeType
---@field w? number|"fill"|"auto"
---@field h? number|"fill"|"auto"
---@field pad? number
---@field gap? number
---@field align? "start"|"center"|"end"|"stretch"
---@field justify? "start"|"center"|"end"|"between"
---@field row? boolean
---@field at? table Absolute-position fields.
---@field capture? boolean
---@field interactive? boolean
---@field label? string
---@field font? ScreenFont
---@class NodeStyle
---@field color? ScreenColor
---@field background? ScreenColor Background offered to descendants.
---@field fill? ScreenColor Surface painted by a box.
---@field border? ScreenColor
---@field face? ScreenColor Default button surface.
---@field pressedFace? ScreenColor Pressed button surface.
---@field pressedColor? ScreenColor Pressed button text.
---@field focusColor? ScreenColor Distinct outline for directional focus.
---@field radius? integer
---@field font? ScreenFont
---@field textStyle? ScreenTextStyle
---@class TreeLib
tree = {}
---Drops the current tree; all existing IDs become invalid.
function tree.reset() end
---Creates a node, optionally as a child of an existing one.
---@param parent? NodeId Nil creates a root.
---@param spec NodeSpec
---@return NodeId
function tree.create(parent, spec) end
---Adopts an existing root as a child.
---@param parent NodeId
---@param child NodeId Existing root without a parent.
function tree.attach(parent, child) end
---Changes a node's requested size before layout.
---@param id NodeId
---@param w? number|"fill"|"auto"
---@param h? number|"fill"|"auto"
function tree.setSize(id, w, h) end
---Measures and places a subtree.
---@param root NodeId
---@param x integer
---@param y integer
---@param w integer
---@param h integer
---@return true? ok
---@return string? error
function tree.layout(root, x, y, w, h) end
---Releases temporary measurement and placement inputs after layout.
function tree.dropScratch() end
---Returns the deepest interactive node under a point.
---@param root NodeId
---@param x integer
---@param y integer
---@return NodeId?
function tree.hit(root, x, y) end
---Returns a node's placed rectangle.
---@param id NodeId
---@return integer x
---@return integer y
---@return integer w
---@return integer h
function tree.getRect(id) end
---Replaces a node's text and marks it for repaint.
---@param id NodeId
---@param text string
function tree.setLabel(id, text) end
---Returns a node's text.
---@param id NodeId
---@return string?
function tree.getLabel(id) end
---Returns a node's parent.
---@param id NodeId
---@return NodeId?
function tree.getParent(id) end
---Sets the style roles a subtree inherits.
---@param id NodeId
---@param style NodeStyle
function tree.setStyle(id, style) end
---Marks a node for repaint.
---@param id NodeId
function tree.invalidate(id) end
---Sets a node's pressed state.
---@param id NodeId
---@param pressed boolean
function tree.setPressed(id, pressed) end
---Whether a node is pressed.
---@param id NodeId
---@return boolean
function tree.isPressed(id) end
---Focuses the first interactive node in layout order.
---@param root NodeId
---@return NodeId? focused
function tree.focusFirst(root) end
---Changes focus and invalidates the previously and newly focused nodes.
---@param id? NodeId Nil clears focus.
function tree.setFocus(id) end
---Returns the focused node.
---@return NodeId?
function tree.getFocus() end
---Moves to the nearest interactive node in the requested direction without wrapping.
---@param root NodeId
---@param direction NodeDirection
---@return NodeId? focused Current focus when no candidate exists.
function tree.moveFocus(root, direction) end
---Registers the painter every custom node calls.
---@param painter fun(id: NodeId, x: integer, y: integer, w: integer, h: integer)
function tree.setPainter(painter) end
---Paints dirty nodes; the firmware owns publication to the physical display.
---@param root NodeId
function tree.draw(root) end
---Returns the number of nodes in the tree.
---@return integer
function tree.getCount() end
---Returns the tree's memory use.
---@return integer bytes
function tree.getFootprint() end
+17 -20
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@@ -2,8 +2,22 @@
-- Generated from native/src/bindings/features/touch.cpp. Do not edit.
---@class SettingsLib
settings = settings or {}
---@class TouchLib
touch = {}
---Returns the calibrated touch point, or nothing when the panel is not touched.
---@return integer? x
---@return integer? y
function touch.getPoint() end
---Returns the uncalibrated touch reading, or nothing when the panel is not touched.
---@return integer? x
---@return integer? y
function touch.getRawPoint() end
---Whether the panel is currently touched.
---@return boolean
function touch.isTouched() end
---Persists the panel's touch calibration.
---@param x0 integer Raw reading at the left edge.
@@ -12,24 +26,7 @@ settings = settings or {}
---@param y1 integer Raw reading at the bottom edge.
---@return true? ok
---@return string? error
function settings.setCalibration(x0, y0, x1, y1) end
---@class InputLib
input = input or {}
---Returns the calibrated touch point, or nothing when the panel is not touched.
---@return integer? x
---@return integer? y
function input.getTouch() end
---Returns the uncalibrated touch reading, or nothing when the panel is not touched.
---@return integer? x
---@return integer? y
function input.getRawTouch() end
---Whether the panel is currently touched.
---@return boolean
function input.isTouched() end
function touch.setCalibration(x0, y0, x1, y1) end
---Fired when the finger lands.
---@param x integer