80 lines
2.0 KiB
TypeScript
80 lines
2.0 KiB
TypeScript
import React from "react";
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import { t } from "../i18n";
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import { NonDeletedExcalidrawElement } from "../element/types";
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import { getSelectedElements } from "../scene";
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import "./HintViewer.scss";
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import { AppState } from "../types";
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import { isLinearElement } from "../element/typeChecks";
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import { getShortcutKey } from "../utils";
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interface Hint {
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appState: AppState;
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elements: readonly NonDeletedExcalidrawElement[];
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}
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const getHints = ({ appState, elements }: Hint) => {
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const { elementType, isResizing, isRotating, lastPointerDownWith } = appState;
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const multiMode = appState.multiElement !== null;
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if (elementType === "arrow" || elementType === "line") {
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if (!multiMode) {
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return t("hints.linearElement");
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}
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return t("hints.linearElementMulti");
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}
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if (elementType === "freedraw") {
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return t("hints.freeDraw");
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}
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if (elementType === "text") {
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return t("hints.text");
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}
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const selectedElements = getSelectedElements(elements, appState);
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if (
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isResizing &&
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lastPointerDownWith === "mouse" &&
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selectedElements.length === 1
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) {
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const targetElement = selectedElements[0];
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if (isLinearElement(targetElement) && targetElement.points.length === 2) {
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return t("hints.lockAngle");
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}
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return t("hints.resize");
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}
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if (isRotating && lastPointerDownWith === "mouse") {
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return t("hints.rotate");
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}
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if (selectedElements.length === 1 && isLinearElement(selectedElements[0])) {
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if (appState.editingLinearElement) {
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return appState.editingLinearElement.activePointIndex
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? t("hints.lineEditor_pointSelected")
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: t("hints.lineEditor_nothingSelected");
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}
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return t("hints.lineEditor_info");
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}
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return null;
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};
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export const HintViewer = ({ appState, elements }: Hint) => {
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let hint = getHints({
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appState,
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elements,
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});
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if (!hint) {
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return null;
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}
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hint = getShortcutKey(hint);
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return (
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<div className="HintViewer">
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<span>{hint}</span>
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</div>
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);
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};
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