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Keavon Chambers a708a54492 Make the data model use Item and List types universally, with nodes authored as rank-polymorphic kernels (#4335)
* Add rank polymorphism node audit classifying all 271 nodes

* Implement StaticType for Item<T>

* Generate Item and mapped List wire variants for nodes declaring an Item<T> primary input

* Migrate nine nodes to Item element-wise kernels, dissolving the blending trait boilerplate

* Document the Item kernel implementation and staging plan

* Route Item<Vector> through TaggedValue::TypeDefault

* Add executor integration tests covering the Item and List wire variants

* Collapse element-wise Item/List wire pairs to the List form for conversion insertion

* Migrate sixteen vector modifier nodes to Item element-wise kernels

* Migrate Sample Image, Extend Image to Bounds, and Dehaze to Item element-wise kernels

* Fix bevel_with_transform test to actually exercise the transform attribute

* Implement From<T> for Item<T>

* Register PromoteNode rank adapters wrapping bare values into Item wires

* Insert PromoteNode adapters for Item/List wire pair fields in the preprocessor

* Define a real promote node backing the PromoteNode registry identifiers

* Zip ranked Item connectors by frame slot in the mapped element-wise variant

* Register ItemToListNode singleton raise adapters

* Resolve Item wires against List connectors by inserting promotion adapters at construction

* Rank the Offset Points distance connector and prove mixed-rank resolution end-to-end

* Implement Clampable for Item and List wires with per-variant clamp bounds

* Rank the Round Corners radius connector, exercising hard bounds on a ranked wire

* Implement ApplyTransform for Item

* Add Item wire implementations to the Transform node, keeping rank-0 chains rank 0

* Detect element-wise nodes by lazy primary connectors declaring Output = Item

* Convert Transform to an Item kernel with ranked parameters, delivering the broadcast milestone

* Rename Apply Transform to Bake Transform, baking item transforms on Vector, DAffine2, and DVec2

* Promote bare wires onto Item connectors at resolution via WrapItemNode adapters

* Rank the numeric, vector, and boolean parameters across the migrated element-wise nodes

* Rank the enum, integer, and seed parameters, registering their rank adapters via a consolidated macro

* Amend the audit with the DashPattern value type resolution

* Migrate the string family to Item element-wise kernels

* Unwrap Item wires into bare legacy connectors at resolution via UnwrapItemNode adapters

* Shadow owned node parameters in bodies instead of mut in signatures

* Migrate the math family and string measure nodes to Item element-wise kernels

* Convert the comparison and clamp nodes to Item kernels, dropping unreachable &str rows

* Flat-map expander kernels returning List under the mapped variant's frame

* Migrate the expander nodes to Item kernels flat-mapping under the frame

* Remove the unused peel_list helper

* Rank the raster adjustment and blending kernels, recontextualizing shader nodes onto an Item stand-in

Migrate the 16 adjustment nodes, Mix, Color Overlay, and Gradient Map from whole-List kernels to rank-0 Item kernels, letting the macro derive the List-mapped (zip) variants. Move the Adjust and Blend per-element seams off List onto the element types (add the Raster<CPU> impls, drop the now-dead List impls).

Shader nodes keep their bodies verbatim: PerPixelAdjust re-emits the identical kernel against a transparent no_std Item stand-in, so every Item<T> connector and .element() call resolves to a zero-cost identity on the GPU while the uniform buffer stays bare repr(C). The macro peels Item off ranked uniform params, wraps the fetched texel and uniforms at the entry point, and unwraps the result. This drops the shader_node/Item incompatibility guard. Register rank adapters for the adjustment enums.

* Update the rank polymorphism roadmap for the landed shader-node and adjustments chunk

* Rename the GPU Item stand-in to ShaderItem, aliased as Item at its shader-node import sites

* Flip the vector shape generators to emit rank-0 Item<Vector>

The shape generators (Rectangle, Circle, Ellipse, Arc, Spiral, Polygon, Star, Arrow, Line, Grid, QR Code) each produced exactly one shape wrapped in a singleton List<Vector>. Emit Item<Vector> directly so they connect to the rank-0 content connector of the migrated Transform node. Downstream List consumers receive the value through the existing Item to List promotion.

Relax the element-wise validation so a `()` (generator) primary may return Item<T> without being element-wise. Adapt the Repeat on Points test, which still takes a List content connector, by raising the generator's Item output through a singleton wrapper node.

* Parse ranked Item<T> parameter defaults against the bare element type

A ranked `Item<T>` parameter's default value is a bare, unranked `T` (promoted to the wire at resolution), but the preprocessor was handed the wrapped `Item<T>` type and could not parse the literal, flooding the console with warnings and dropping the defaults. Key the field's default_type metadata off the peeled element type for concrete ranked parameters, leaving generic `Item<T>` primaries and skip_impl nodes untouched.

* Parse an element-wise primary's scalar default against the bare element type

An element-wise node's primary reports its default_type as the List wire form so an unconnected primary defaults to an empty list. But when the primary carries a scalar `#[default]` (such as Root's radicand), that literal must parse as a bare element, not a List. Key the primary's default_type off the bare element type when it has a Default value source, keeping the List form otherwise.

* Add the DashPattern value type for stroke dash sequences

Introduce a rank-0 DashPattern value type (a Vec<f64> of alternating dash and gap lengths) so a stroke's dash pattern is a single frameable value rather than a rank-1 List<f64>. Register it as an auto-generated TaggedValue variant, parse its default from a comma or space separated string, and register its rank adapters. Not yet wired into the Stroke node.

* Rank the Fill and Stroke nodes element-wise and give Stroke a DashPattern connector

Migrate Fill and Stroke to element-wise Item<V> primaries (over Vector and Graphic element types) via a new element-level VectorItemMut trait, so styling one shape yields one shape and rank is preserved instead of promoting the input to a singleton List and emitting a List. The macro derives the List-mapped variant for genuine collections.

Wire the Stroke dash sequence to the new rank-0 DashPattern value type, collapsing the old content x paint x dash cartesian and dropping the IntoF64Vec trait. Update the stroke properties dash widget, the drawing tool, and graph-operation plumbing to read and write DashPattern, and migrate legacy F64Array, F64, and String dash inputs on document open.

Assign Colors stays a whole-collection node: each element's gradient position depends on its index among all siblings, which the element frame does not expose, so it keeps its List primary and the VectorListIterMut trait.

* Register rank adapters for the ranked Stroke enum parameters

The element-wise Stroke node ranks its align, cap, and paint order parameters as Item<StrokeAlign>, Item<StrokeCap>, and Item<PaintOrder>, but those enums lacked promotion adapters, so a bare default enum value could not be promoted to its Item wire and no Stroke variant resolved ("No construct found for node"). Register their rank adapters alongside StrokeJoin.

* Display Item wires in the Data panel without a List's ID column

Add a TableItemLayout impl for Item<T> and recognize Item wire types when introspecting graph data. An Item holds a single element, so it renders as a one-row table of the element plus its attributes with no leading index column, and it labels as its element type T rather than a List's T[]. Add ItemAttributeValues::get_any for the attribute widget dispatch.

* Register MonitorNode for Item wire types so the Data panel introspects them directly

Graph introspection wraps the inspected output in a generic MonitorNode typed to the wire. Without Item<T> monitor registrations, an Item<Vector> output could only be monitored after an Item to List promotion, so the Data panel captured and displayed a List<Vector> despite the connector being Item<Vector>. Register monitors for the Item types the element-wise nodes emit, and add the matching Data panel downcast entries.

* Color and double Item/List wires and cleave layer-stack connectors in the node graph

* Route wire color and rank through hidden nodes and refresh them on type changes

* Rework the DashPattern connector conversions with element-wise promotion and an explicit reducer node

* Rank the remaining value, context, aggregation, and transform nodes onto Item<T> wires

* Back DashPattern with a List<f64> so the Data panel can introspect its lengths

* Carry a single Item<T> through varargs so the Read context nodes emit Item<T> not List<T>

* Relax rank validation for aggregation shapes, add element adapters, and match variants by fewest promotions

* Rank the remaining bare and unnecessarily-List connectors across the node catalog

* Add Graphic::None and the FillChoice paint value, making colors and gradients plain values

* Rename GradientStops to Gradient and the legacy Gradient/Fill structs to LegacyGradient/LegacyFill

* Restore generator frame-from-params ranking to the roadmap as a planned stage

* Rename the ranked-field adapter identifier from PromoteNode to FieldAdapterNode to reflect its full contract

* Unload only the wires whose displayed style changed when types update

* Peel wire rank in the editor's semantic type checks so rank-0 layers are recognized

* Restore the whole-List Transform variant so rank-1 content wires resolve again

* Register the Item wire forms for the Memoize and Context Modification infrastructure nodes

* Give every ranked connector a field adapter and add numeric cast variants for legacy wires

* Key a ranked param's type default off its Item wire form when no literal default exists

* Inherit the layer's content value when splicing a node into an empty chain

* Migrate stale List-form TypeDefault inputs to the definition's current default

* Generate the mapped wire variant only when the element-wise node has a frame source

* Let a bare wire feed a List connector via a wrap-raise adapter, costed as two rank steps

* Add a zip companion to the whole-List Transform so ranked List parameters pair per slot

* Add the Sum, Average, Minimum, Maximum, Any, and All list reducers

* Convert the measure family to element-wise Item kernels per the audit classification

* Prefer the bare element value over the Item type default so ranked params keep their widgets

* Rename GradientStopsUI to GradientUI

* Split Fill's optional transform into a _has_transform bool and a ranked _transform matrix

* Rename the migration-only OptionalDAffine2 TaggedValue to LegacyOptionalDAffine2

* Flow byte buffers as Item<Resource> instead of List<u8> across the byte nodes

* Macro-generate the list-content wire variant, retiring the hand-written Transform-zip, Area, and Centroid companions

* Let ()-primary generators take ranked params and frame over them via the mapped variant, ranking Circle's radius

* Rank the vector shape generators' params to Item, adding a rank-aware input grab to the introspection harness

* Rank the value, color, and text generator params to Item

* Rank the raster, web-request, and context-reader generator params to Item

* Fix the repeat and brush test wirings left behind by the param-ranking sweeps

* Delete the vestigial Some, Unwrap Option, and Size Of debug nodes

* Delete the Attach Attribute node, folding its role into Write Attribute

* Add the Filter and Sort list companion nodes

* Guard the removed-definition migration swap target with a test

* Add the Box Corners value type in place of the rectangle corner radius list

* Split Text to Vector's per-glyph mode into a Text to Vector Glyphs node

* Rank the Combine Channels node's channel connectors to Item

* Make Map Points an element-wise node

* Delete the deprecated Upload Texture node

* Update the implementation roadmap to reflect the landed stages

* Let monitor introspection read rank-0 wires, locking in the layer coercion promotion path

* Prefer the rank-0 default when disconnecting a rank-capable input

* Make Path Modify an element-wise node

* Wrap node paths in a NodeIdPath newtype so they flow as a single Item

* Give Item<Raster<CPU>> a default so an unconnected Brush background resolves

* Stop the Brush node from setting layer attributes its paint operation doesn't produce

* Present-gate Flatten Path's adopted layer path like its fill and stroke

* Gate carried layer attributes on static column presence, not runtime values

* Give the remaining graphic Item<T> types a default so unconnected primaries resolve

* Dispatch a ranked param's Properties widget from its rank-0 element type

* Make Extract Transform an element-wise node, restoring the Origins to Polyline body

* Rename Flatten Path to Combine Paths

* Stamp Legacy Layer Extend's adopted layer path as a readable NodeIdPath

* Drop the dead List<u8> and List<NodeId> wire rows

* Rank Flatten Graphic's Fully Flatten toggle to Item

* Update the implementation roadmap with the endgame scope

* Make Combine Paths a reducer that collapses the whole frame into one path

* Stop type-converter nodes from carrying the source's unrelated attributes

* Format the Origins to Polyline regression test

* Wrap the Brush node's trace in a BrushTrace newtype so it flows as one value

* Make Switch a framed element-wise select, bundling whole collections

* Widen and align element-type coverage across the list and graphic nodes

* Register the compiler's cache chain pair for every ranked enum and newtype wire

* Fix wire colors for Passthrough outputs, bundled lists, and bools, and widen list wires

* Represent List wire types structurally with Type::List, replacing name-parsed rank promotion

* Treat scope and data fields as environment, rank scope wires as Item, and feed the render boundary through a context vararg

* Delete the vestigial Clone debug node

* Reinstate Upload Texture as an element-wise node and fix the GPU variants' scope executor and rank adapters

* Rename Combine Paths back to Flatten Path, deferring that rename to its own PR

* Deduplicate the promotion adapter registrations into the field adapter macro

* Rank Write Attribute's value connector to Item<AttributeValueDyn>, retiring the UnwrapItem bridge

* Vertical wire styling

* Store the editor layer path attribute as a bare NodeIdPath, not an Item<NodeIdPath>

* Rank Context Modification's features connector to Item<ContextFeatures>, dropping the dead memoize row

* Rank Path Modify's modification parameter to Item<Box<VectorModification>>

* Rename the field adapter node family to input adapter

* Drop the dead bare scalar rows from Context Modification's implementations list

* Move the dynamic executor's test module into its own file

* Drop the registry's unreachable bare rows for Memoize, the cache chain, and ConvertNode

* Materialize stored TaggedValues as ranked Item wires at the source

* Remove the bare-wire promotion and adapter machinery made dead by ranked value materialization

* Plant the input adapter for List-only inputs, composing position conversion from standard rows

* Consolidate Into/Convert conversions into the input adapter umbrella and rename the rank adapter identifiers

* Fix grouped layers gaining a phantom None stack element from the FillChoice default hijacking every List<Graphic> disconnect

* Enforce ranked node inputs in the macro, rejecting bare wire declarations

* Remove the unit Context => () machinery rows, leaving () purely as the no-primary sentinel

* Add a --signatures rank-audit mode to node-docs for the ranked-wire migration

* Remove the node-docs --signatures rank-audit mode now that ranked wires are enforced

* Migrate legacy no-color values on the Black & White, Color Overlay, and Empty Image color inputs

* Rewrite the element-wise accessor wire type at the primary input, not raw index 0

* Register the cache chain for Resource wires, replacing the lone hand-written Monitor row

* Gate the remaining Raster<GPU> registry rows behind the gpu feature

* Let List<DVec2> wires erase to ListDyn for the attribute reader and element counter

* Rename Extract Element to Item at Index, Count Elements to List Length, and Omit Element to Remove at Index

* Store paint picks as plain color/gradient values, removing the FillChoice value type

* Code review restructuring

* Sort by the consumed sort_key attribute or natural element order, adding the Sort Key node

* Remove the new list-combinator and reducer nodes to defer them to a follow-up PR

* Parse Fill and Stroke color defaults through the paint wire's Graphic element

* Emit ranked implementation-row default types structurally so their element TypeIds survive to default-literal parsing

* Exempt the deliberate no-paint choice from the stale List-form TypeDefault migration

* Migrate the legacy 4-input Fill directly to the split has-transform shape

* Upgrade the demo artwork

* Fix the valid AI review findings: Item eq/hash contract, table-era no-paint migration, quantize List rows, and other smaller issues

* Remove the rank polymorphism working documents

* Hash Item attribute values directly instead of debug-formatting them, speeding up cached evaluation

* Replace the data panel's dead bare-wire downcast arms with full coverage of the ranked monitor row types

* Derive PartialEq for Item now that attributes participate in equality

* Extend the data panel's attribute dispatchers with the newly supported scalar and choice enum types

* Add List monitor rows for the framed numeric conversion outputs so inspecting them resolves, with matching data panel arms
2026-09-08 16:03:01 +00:00

11 KiB

+++ title = "Document panel"

[extra] order = 2 +++

The Document panel is the main content area where the artwork is displayed and edited using tools within the viewport. It's also where the node graph can be overlaid by pressing CtrlSpace.

The viewport is for interactive, visual editing of the canvas. The node graph is where you can inspect the underlying structure of the document and edit it in a more technical manner when the need arises.

There is one instance of the Document panel per open document file. Each has its own tab labeled with its file name. When a document has unsaved changes, an * is included at the end of the name.

The Document panel is composed of three main areas:

  • The control bar runs across the top of the panel and shows tool and viewport controls.
  • The tool shelf is the vertical bar that runs down the left of the panel showing the editing tools and working colors.
  • The viewport fills most of the panel and contains a view of the canvas which can be interactively edited using the tools.

Control bar

Here is where you control your interaction with the document via active tool and view options.

Tool controls

The left side of the control bar has controls pertaining to the active tool. It's empty for some tools.

Example of the tool controls for the Select tool

The example above shows the Select tool controls. Because the Select tool deals with selecting and transforming layers, its controls include:

  • The selection mode to determine if the deepest or shallowest layer in a nested hierarchy is selected when clicked.
  • The point about which the transform cage is centered.
  • Actions to align and distribute the selected layers amongst themselves.
  • Actions to flip the selected layers horizontally or vertically.
  • Actions to cut or combine selected layers with themselves using boolean operations.

Depending on which tool is active, these will change to reflect the pertinent options.

Viewport controls

The right side of the control bar has controls related to the active document and viewport.

The viewport controls

Overlays

When checked (default), overlays are shown. When unchecked, they are hidden. Overlays are the temporary contextual visualizations (like bounding boxes and vector manipulators) that are usually blue and appear atop the viewport when using tools.

Snapping

When checked (default), drawing and dragging shapes and vector points means they will snap to other areas of geometric interest like corners or anchor points. When unchecked, the selection moves freely.

Fine-grained options are available by clicking the overflow button to access its options popover menu. Each option has a tooltip explaining what it does by hovering the cursor over it.

Snapping options popover menu

Snapping options relating to Bounding Boxes:

  • Align with Edges: Snaps to horizontal/vertical alignment with the edges of any layer's bounding box.
  • Corner Points: Snaps to the four corners of any layer's bounding box.
  • Center Points: Snaps to the center point of any layer's bounding box.
  • Edge Midpoints: Snaps to any of the four points at the middle of the edges of any layer's bounding box.
  • Distribute Evenly: Snaps to a consistent distance offset established by the bounding boxes of nearby layers (due to a bug, Corner Points and Center Points must be enabled).

Snapping options relating to Paths:

  • Align with Anchor Points: Snaps to horizontal/vertical alignment with the anchor points of any vector path.
  • Anchor Points: Snaps to the anchor point of any vector path.
  • Line Midpoints: Snaps to the point at the middle of any straight line segment of a vector path.
  • Path Intersection Points: Snaps to any points where vector paths intersect.
  • Along Paths: Snaps along the length of any vector path.
  • Normal to Paths: Snaps a line to a point perpendicular to a vector path (due to a bug, Intersections of Paths must be enabled).
  • Tangent to Paths: Snaps a line to a point tangent to a vector path (due to a bug, Intersections of Paths must be enabled).

Grid

When checked (off by default), grid lines are shown and snapping to them becomes active. The initial grid scale is 1 document unit, helping you draw pixel-perfect artwork.

  • Type sets whether the grid pattern is made of squares or triangles.

    Rectangular is a pattern of horizontal and vertical lines:

    Snapping options popover menu

    It has one option unique to this mode:

    • Spacing is the width and height of the rectangle grid cells.

    Isometric is a pattern of triangles:

    Snapping options popover menu

    It has two options unique to this mode:

    • Y Spacing is the height between vertical repetitions of the grid.
    • Angles is the slant of the upward and downward sloped grid lines.
  • Display gives control over the appearance of the grid. The Display as dotted grid checkbox (off by default) replaces the solid lines with dots at their intersection points.
  • Origin is the position in the canvas where the repeating grid pattern begins from. If you need an offset for the grid where an intersection occurs at a specific location, set those coordinates.
Render Mode

Normal (default): The artwork is rendered normally.

Outline: The artwork is rendered as a wireframe.

Pixel Preview: Not implemented yet. The artwork is rendered as it would appear when exported as a bitmap image at 100% scale regardless of the viewport zoom level.

SVG Preview: Not implemented yet. The artwork is rendered as it would appear when exported as an SVG image.

Zoom In

Zooms the viewport in to the next whole increment.

Zoom Out

Zooms the viewport out to the next whole increment.

Reset Tilt and Zoom to 100%

Resets the viewport tilt to 0°. Resets the viewport zoom to 100% which matches the canvas and viewport pixel scale 1:1.

Viewport Zoom

Indicates the current zoom level of the viewport and allows precise values to be chosen.

Viewport Tilt

Hidden except when the viewport is tilted (use the View > Tilt menu action). Indicates the current tilt angle of the viewport and allows precise values to be chosen.

Node Graph

Toggles the visibility of the overlaid node graph.

Tool shelf

This narrow bar runs vertically down the left side of the Document panel beside the viewport.

Tools

The tool shelf

Located at the top of the tool shelf area, the tool shelf provides a selection of tools for interactively editing the artwork. It is composed of three sections:

General tools (Gray icons) Used for assorted editing tasks within the viewport.
Vector tools (Blue icons) Used for drawing and editing vector shapes, paths, and text.
Raster tools (Orange icons) Used for drawing and editing raster image content. The grayed out icons are placeholders for upcoming tools.

Working colors

The working colors

The working colors are the two colors used by the active tool. The upper circle is the primary color. The lower circle is the secondary color.

There are two buttons located underneath: Swap which reverses the current color choices, and Reset which restores the primary color to black and the secondary color to white.

The tool controls (above the viewport) for some of the tools offer choices for using the primary and secondary colors. For example, the vector drawing tools have Fill and Stroke options that use the current secondary and primary colors, respectively, as defaults:

The Fill and Stroke controls for a vector tool's controls

These options each allow choices of being driven by the primary working color, secondary working color, or a custom color set just for that tool.

Viewport

The viewport is the view into the canvas. It lets you interact visually with the artwork content. It also displays temporary contextual overlays atop the content to assist with your editing.

The viewport is also surrounded by scrollbars and rulers around its edges. Scrollbars, located along the bottom/right edges, allow scrolling the artwork to show different parts in the viewport. Rulers, located along the top/left edges, offer dimensional information for the area of the canvas that's within view. They can be hidden with the View > Rulers toggleable menu option.