Handle a move event while dragging. `grid_snap_enabled` controls whether points should snap to grid. `smart_snap_enabled` enables smart guide alignmen

Find which handle (if any) is hit at the given point. Returns the handle kind if hit.

If `line` begins with `word` followed by whitespace, return the remainder.

Load a document by ID.

Cycle to the next grid style.

Regenerate the shape's ID with a new unique identifier. This is used when duplicating or pasting shapes to ensure they have unique IDs.

Set the state of a shape.

Get shapes in z-order (back to front).

Skip whitespace starting at `start`, returning the next non-space index.

Get the z-order as a list of shape IDs.

Get the rectangle as a kurbo Rect.

Parse `body` and build the shapes for a sequence diagram. Returns an empty vector if there is nothing drawable.

Get the children of this group.

Collect snap candidate bounds with viewport culling, proximity filtering, and limit. `exclude_ids` - shape IDs to exclude (e.g., the shape being dragg

Color swatch circle that can show selection state with black inner offset - uses drafftink_widgets.

Check if two colors match (for selection highlighting).

Copy PNG to clipboard.

Get the direction vector (normalized).

Get the file path for a document ID.

End the current interaction and return any created shape.

Grid swatch (smaller, for color grids)

Calculate grid bounds from viewport and transform.

Handle a press event (mouse down). `grid_snap_enabled` controls whether the start point should snap to grid.

Import updates from another document.

Single-line text input with modern styling.

Find or create a participant by id, optionally setting an explicit label. Returns the participant's column index.

Get the length of the line.

Create a straight connector line between two points with the given stroke style (solid/dashed/dotted).

Load document from a JSON file using native file dialog (async, non-blocking). Use `take_pending_document()` to retrieve the result.

Mark the document as having unsaved changes.

Get display name for this grid style.

Primary button (blue background, white text).

Render error placeholder for math that couldn't be rendered.

Run the application, optionally auto-connecting to `server` and auto-joining `room` on startup (native CLI args; `None` on the web).

Set the cached layout size (computed by the renderer). Uses interior mutability so this can be called during rendering.

Set the current room (called when server confirms join).

Set the rotation angle in radians.

Set the current tool.

Snap a line endpoint to angle increments from a start point. This snaps the angle while preserving the distance from start.

Find where a ray from origin at a given angle intersects with grid lines. Returns the nearest intersection point to the target point. This snaps to w

Sync char_colors with content after text edit. `edit_char_pos` is the character index where the edit occurred. `old_char_count` is the character count

Sync local document state to CRDT. This should be called after local operations to propagate changes.

Get all points including start, intermediate, and end.

Apply hand-drawn effect to a path based on roughness level. This mimics the Excalidraw/rough.js algorithm: - Endpoints are randomly offset (lines over

Get the bounding rectangle.

Base64 encoding

Bring a shape to the front (topmost).

Queue a sync broadcast with current CRDT state.

Parse `body` and build the shapes for a flowchart. Returns an empty vector if there is nothing drawable.

Current color swatch with hue wheel background (color picker button) - uses drafftink_widgets.

Connect to a WebSocket server.

Get a reference to the PlainEditor.

Convert a single Excalidraw element into a native shape, or `None` if it is deleted or of an unsupported type.

Encode RGBA pixel data to PNG bytes with optional embedded scene JSON.

Enter text editing mode for a shape. This updates both the local state and the Canvas's WidgetManager. Stores the top-left handle position and size to

Exit text editing mode. This updates both the local state and the Canvas's WidgetManager. If the text is empty, the shape is deleted. Preserves top-le

Export PNG to file using native file dialog (async, non-blocking).

Locate the leftmost message-arrow token in `s`. Returns its byte offset, its length, and whether it is a dashed (return) arrow.

Find the next occurrence of `needle` within `chars` at or after `from`.

Get or compute a cached hand-drawn path.

Parse URL query parameters for room and server. Supports formats like `?room=abc123&server=localhost:3030`

Handle a release event (mouse up). `grid_snap_enabled` controls whether the end point should snap to grid. `angle_snap_enabled` enables 15° angle snap

Check if a point (in world coordinates) hits this handle. `tolerance` should be adjusted for camera zoom.

Find or create a node by id. An explicit label/shape upgrades a node that was previously only referenced. A brand-new node is assigned to `parent`. Re

Check if a shape is selected.

Check if any snapping occurred.

Request to join a room. Queues the join message.

If `line` begins with `word` on a word boundary, return the trimmed remainder.

Load document from IndexedDB - triggers async load. Use `take_pending_document()` to retrieve the loaded document.

Load the tab at `index` into the live canvas.

Cycle to the next sloppiness level.

Parse a crates.io timestamp into a UTC datetime. crates.io returns values like `2026-06-12T12:22:39.813180Z`. We extract the calendar fields

Parse a node token at `start`. Returns the parsed node and the index just past it, or `None` if no identifier is present.

Queue awareness broadcast.

Read a `points` array of `[dx, dy]` pairs, translated by the element origin.

Redo the last undone change. Returns true if redo was performed, false if nothing to redo.

Render a shape path with the given style (with caching).

Render a path with stroke only (no fill) - used for lines and arrows.

Send a shape to the back (bottommost).

Update local cursor position.

Set the text content.

Try to parse clipboard text as a supported Mermaid diagram, returning a single-element vector holding one [`Shape::Group`] that contains every drawabl

Simplify the path by removing redundant points.

Snap an angle to the nearest increment. Returns the snapped angle in degrees (0-360).