@excalidraw/math
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Excalidraw math functions
296 lines (295 loc) • 12.1 kB
TypeScript
import type { LocalPoint, Radians } from "@excalidraw/math";
import type { FONT_FAMILY, ROUNDNESS, TEXT_ALIGN, THEME, VERTICAL_ALIGN } from "@excalidraw/common";
import type { MakeBrand, MarkNonNullable, Merge, ValueOf } from "@excalidraw/common/utility-types";
export type ChartType = "bar" | "line";
export type FillStyle = "hachure" | "cross-hatch" | "solid" | "zigzag";
export type FontFamilyKeys = keyof typeof FONT_FAMILY;
export type FontFamilyValues = typeof FONT_FAMILY[FontFamilyKeys];
export type Theme = typeof THEME[keyof typeof THEME];
export type FontString = string & {
_brand: "fontString";
};
export type GroupId = string;
export type PointerType = "mouse" | "pen" | "touch";
export type StrokeRoundness = "round" | "sharp";
export type RoundnessType = ValueOf<typeof ROUNDNESS>;
export type StrokeStyle = "solid" | "dashed" | "dotted";
export type TextAlign = typeof TEXT_ALIGN[keyof typeof TEXT_ALIGN];
type VerticalAlignKeys = keyof typeof VERTICAL_ALIGN;
export type VerticalAlign = typeof VERTICAL_ALIGN[VerticalAlignKeys];
export type FractionalIndex = string & {
_brand: "franctionalIndex";
};
export type BoundElement = Readonly<{
id: ExcalidrawLinearElement["id"];
type: "arrow" | "text";
}>;
type _ExcalidrawElementBase = Readonly<{
id: string;
x: number;
y: number;
strokeColor: string;
backgroundColor: string;
fillStyle: FillStyle;
strokeWidth: number;
strokeStyle: StrokeStyle;
roundness: null | {
type: RoundnessType;
value?: number;
};
roughness: number;
opacity: number;
width: number;
height: number;
angle: Radians;
/** Random integer used to seed shape generation so that the roughjs shape
doesn't differ across renders. */
seed: number;
/** Integer that is sequentially incremented on each change. Used to reconcile
elements during collaboration or when saving to server. */
version: number;
/** Random integer that is regenerated on each change.
Used for deterministic reconciliation of updates during collaboration,
in case the versions (see above) are identical. */
versionNonce: number;
/** String in a fractional form defined by https://github.com/rocicorp/fractional-indexing.
Used for ordering in multiplayer scenarios, such as during reconciliation or undo / redo.
Always kept in sync with the array order by `syncMovedIndices` and `syncInvalidIndices`.
Could be null, i.e. for new elements which were not yet assigned to the scene. */
index: FractionalIndex | null;
isDeleted: boolean;
/** List of groups the element belongs to.
Ordered from deepest to shallowest. */
groupIds: readonly GroupId[];
frameId: string | null;
/** other elements that are bound to this element */
boundElements: readonly BoundElement[] | null;
/** epoch (ms) timestamp of last element update */
updated: number;
link: string | null;
locked: boolean;
customData?: Record<string, any>;
}>;
export type ExcalidrawSelectionElement = _ExcalidrawElementBase & {
type: "selection";
};
export type ExcalidrawRectangleElement = _ExcalidrawElementBase & {
type: "rectangle";
};
export type ExcalidrawDiamondElement = _ExcalidrawElementBase & {
type: "diamond";
};
export type ExcalidrawEllipseElement = _ExcalidrawElementBase & {
type: "ellipse";
};
export type ExcalidrawEmbeddableElement = _ExcalidrawElementBase & Readonly<{
type: "embeddable";
}>;
export type MagicGenerationData = {
status: "pending";
} | {
status: "done";
html: string;
} | {
status: "error";
message?: string;
code: "ERR_GENERATION_INTERRUPTED" | string;
};
export type ExcalidrawIframeElement = _ExcalidrawElementBase & Readonly<{
type: "iframe";
customData?: {
generationData?: MagicGenerationData;
};
}>;
export type ExcalidrawIframeLikeElement = ExcalidrawIframeElement | ExcalidrawEmbeddableElement;
export type IframeData = ({
intrinsicSize: {
w: number;
h: number;
};
error?: Error;
sandbox?: {
allowSameOrigin?: boolean;
};
} & ({
type: "video" | "generic";
link: string;
} | {
type: "document";
srcdoc: (theme: Theme) => string;
}));
export type ImageCrop = {
x: number;
y: number;
width: number;
height: number;
naturalWidth: number;
naturalHeight: number;
};
export type ExcalidrawImageElement = _ExcalidrawElementBase & Readonly<{
type: "image";
fileId: FileId | null;
/** whether respective file is persisted */
status: "pending" | "saved" | "error";
/** X and Y scale factors <-1, 1>, used for image axis flipping */
scale: [number, number];
/** whether an element is cropped */
crop: ImageCrop | null;
}>;
export type InitializedExcalidrawImageElement = MarkNonNullable<ExcalidrawImageElement, "fileId">;
export type ExcalidrawFrameElement = _ExcalidrawElementBase & {
type: "frame";
name: string | null;
};
export type ExcalidrawMagicFrameElement = _ExcalidrawElementBase & {
type: "magicframe";
name: string | null;
};
export type ExcalidrawFrameLikeElement = ExcalidrawFrameElement | ExcalidrawMagicFrameElement;
/**
* These are elements that don't have any additional properties.
*/
export type ExcalidrawGenericElement = ExcalidrawSelectionElement | ExcalidrawRectangleElement | ExcalidrawDiamondElement | ExcalidrawEllipseElement;
export type ExcalidrawFlowchartNodeElement = ExcalidrawRectangleElement | ExcalidrawDiamondElement | ExcalidrawEllipseElement;
export type ExcalidrawRectanguloidElement = ExcalidrawRectangleElement | ExcalidrawImageElement | ExcalidrawTextElement | ExcalidrawFreeDrawElement | ExcalidrawIframeLikeElement | ExcalidrawFrameLikeElement | ExcalidrawEmbeddableElement | ExcalidrawSelectionElement;
/**
* ExcalidrawElement should be JSON serializable and (eventually) contain
* no computed data. The list of all ExcalidrawElements should be shareable
* between peers and contain no state local to the peer.
*/
export type ExcalidrawElement = ExcalidrawGenericElement | ExcalidrawTextElement | ExcalidrawLinearElement | ExcalidrawArrowElement | ExcalidrawFreeDrawElement | ExcalidrawImageElement | ExcalidrawFrameElement | ExcalidrawMagicFrameElement | ExcalidrawIframeElement | ExcalidrawEmbeddableElement;
export type ExcalidrawNonSelectionElement = Exclude<ExcalidrawElement, ExcalidrawSelectionElement>;
export type Ordered<TElement extends ExcalidrawElement> = TElement & {
index: FractionalIndex;
};
export type OrderedExcalidrawElement = Ordered<ExcalidrawElement>;
export type NonDeleted<TElement extends ExcalidrawElement> = TElement & {
isDeleted: boolean;
};
export type NonDeletedExcalidrawElement = NonDeleted<ExcalidrawElement>;
export type ExcalidrawTextElement = _ExcalidrawElementBase & Readonly<{
type: "text";
fontSize: number;
fontFamily: FontFamilyValues;
text: string;
textAlign: TextAlign;
verticalAlign: VerticalAlign;
containerId: ExcalidrawGenericElement["id"] | null;
originalText: string;
/**
* If `true` the width will fit the text. If `false`, the text will
* wrap to fit the width.
*
* @default true
*/
autoResize: boolean;
/**
* Unitless line height (aligned to W3C). To get line height in px, multiply
* with font size (using `getLineHeightInPx` helper).
*/
lineHeight: number & {
_brand: "unitlessLineHeight";
};
}>;
export type ExcalidrawBindableElement = ExcalidrawRectangleElement | ExcalidrawDiamondElement | ExcalidrawEllipseElement | ExcalidrawTextElement | ExcalidrawImageElement | ExcalidrawIframeElement | ExcalidrawEmbeddableElement | ExcalidrawFrameElement | ExcalidrawMagicFrameElement;
export type ExcalidrawTextContainer = ExcalidrawRectangleElement | ExcalidrawDiamondElement | ExcalidrawEllipseElement | ExcalidrawArrowElement;
export type ExcalidrawTextElementWithContainer = {
containerId: ExcalidrawTextContainer["id"];
} & ExcalidrawTextElement;
export type FixedPoint = [number, number];
export type PointBinding = {
elementId: ExcalidrawBindableElement["id"];
focus: number;
gap: number;
};
export type FixedPointBinding = Merge<PointBinding, {
fixedPoint: FixedPoint;
}>;
type Index = number;
export type PointsPositionUpdates = Map<Index, {
point: LocalPoint;
isDragging?: boolean;
}>;
export type Arrowhead = "arrow" | "bar" | "dot" | "circle" | "circle_outline" | "triangle" | "triangle_outline" | "diamond" | "diamond_outline" | "crowfoot_one" | "crowfoot_many" | "crowfoot_one_or_many";
export type ExcalidrawLinearElement = _ExcalidrawElementBase & Readonly<{
type: "line" | "arrow";
points: readonly LocalPoint[];
lastCommittedPoint: LocalPoint | null;
startBinding: PointBinding | null;
endBinding: PointBinding | null;
startArrowhead: Arrowhead | null;
endArrowhead: Arrowhead | null;
}>;
export type ExcalidrawLineElement = ExcalidrawLinearElement & Readonly<{
type: "line";
polygon: boolean;
}>;
export type FixedSegment = {
start: LocalPoint;
end: LocalPoint;
index: Index;
};
export type ExcalidrawArrowElement = ExcalidrawLinearElement & Readonly<{
type: "arrow";
elbowed: boolean;
}>;
export type ExcalidrawElbowArrowElement = Merge<ExcalidrawArrowElement, {
elbowed: true;
startBinding: FixedPointBinding | null;
endBinding: FixedPointBinding | null;
fixedSegments: readonly FixedSegment[] | null;
/**
* Marks that the 3rd point should be used as the 2nd point of the arrow in
* order to temporarily hide the first segment of the arrow without losing
* the data from the points array. It allows creating the expected arrow
* path when the arrow with fixed segments is bound on a horizontal side and
* moved to a vertical and vica versa.
*/
startIsSpecial: boolean | null;
/**
* Marks that the 3rd point backwards from the end should be used as the 2nd
* point of the arrow in order to temporarily hide the last segment of the
* arrow without losing the data from the points array. It allows creating
* the expected arrow path when the arrow with fixed segments is bound on a
* horizontal side and moved to a vertical and vica versa.
*/
endIsSpecial: boolean | null;
}>;
export type ExcalidrawFreeDrawElement = _ExcalidrawElementBase & Readonly<{
type: "freedraw";
points: readonly LocalPoint[];
pressures: readonly number[];
simulatePressure: boolean;
lastCommittedPoint: LocalPoint | null;
}>;
export type FileId = string & {
_brand: "FileId";
};
export type ExcalidrawElementType = ExcalidrawElement["type"];
/**
* Map of excalidraw elements.
* Unspecified whether deleted or non-deleted.
* Can be a subset of Scene elements.
*/
export type ElementsMap = Map<ExcalidrawElement["id"], ExcalidrawElement>;
/**
* Map of non-deleted elements.
* Can be a subset of Scene elements.
*/
export type NonDeletedElementsMap = Map<ExcalidrawElement["id"], NonDeletedExcalidrawElement> & MakeBrand<"NonDeletedElementsMap">;
/**
* Map of all excalidraw Scene elements, including deleted.
* Not a subset. Use this type when you need access to current Scene elements.
*/
export type SceneElementsMap = Map<ExcalidrawElement["id"], Ordered<ExcalidrawElement>> & MakeBrand<"SceneElementsMap">;
/**
* Map of all non-deleted Scene elements.
* Not a subset. Use this type when you need access to current Scene elements.
*/
export type NonDeletedSceneElementsMap = Map<ExcalidrawElement["id"], Ordered<NonDeletedExcalidrawElement>> & MakeBrand<"NonDeletedSceneElementsMap">;
export type ElementsMapOrArray = readonly ExcalidrawElement[] | Readonly<ElementsMap>;
export type ExcalidrawLinearElementSubType = "line" | "sharpArrow" | "curvedArrow" | "elbowArrow";
export type ConvertibleGenericTypes = "rectangle" | "diamond" | "ellipse";
export type ConvertibleLinearTypes = ExcalidrawLinearElementSubType;
export type ConvertibleTypes = ConvertibleGenericTypes | ConvertibleLinearTypes;
export {};