70 lines
2.0 KiB
TypeScript
70 lines
2.0 KiB
TypeScript
import { NonDeletedExcalidrawElement } from "../element/types";
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export const hasBackground = (type: string) =>
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type === "rectangle" ||
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type === "ellipse" ||
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type === "diamond" ||
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type === "line" ||
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type === "freedraw";
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export const hasStrokeColor = (type: string) =>
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type !== "image" && type !== "frame";
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export const hasStrokeWidth = (type: string) =>
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type === "rectangle" ||
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type === "ellipse" ||
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type === "diamond" ||
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type === "freedraw" ||
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type === "arrow" ||
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type === "line";
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export const hasStrokeStyle = (type: string) =>
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type === "rectangle" ||
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type === "ellipse" ||
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type === "diamond" ||
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type === "arrow" ||
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type === "line";
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export const canChangeRoundness = (type: string) =>
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type === "rectangle" ||
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type === "arrow" ||
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type === "line" ||
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type === "diamond";
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export const hasText = (type: string) => type === "text";
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export const canHaveArrowheads = (type: string) => type === "arrow";
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export const getElementAtPosition = (
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elements: readonly NonDeletedExcalidrawElement[],
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isAtPositionFn: (element: NonDeletedExcalidrawElement) => boolean,
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) => {
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let hitElement = null;
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// We need to to hit testing from front (end of the array) to back (beginning of the array)
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// because array is ordered from lower z-index to highest and we want element z-index
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// with higher z-index
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for (let index = elements.length - 1; index >= 0; --index) {
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const element = elements[index];
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if (element.isDeleted) {
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continue;
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}
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if (isAtPositionFn(element)) {
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hitElement = element;
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break;
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}
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}
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return hitElement;
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};
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export const getElementsAtPosition = (
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elements: readonly NonDeletedExcalidrawElement[],
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isAtPositionFn: (element: NonDeletedExcalidrawElement) => boolean,
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) => {
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// The parameter elements comes ordered from lower z-index to higher.
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// We want to preserve that order on the returned array.
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return elements.filter(
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(element) => !element.isDeleted && isAtPositionFn(element),
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);
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};
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