All files / src/utils/components/question-bank/question-display/graph NonEmptyGraph.jsx

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import React, { useCallback, useMemo } from "react";
import { DrawingGraph } from "graph2d-react";
import { Box } from "@mui/material";
import { GRAPH2D_QUESTION_BANK_CANVAS_SIZE, drawingGraphFrameSx } from "./graphConstants";
import { normalizeGraphAnswerForImport, parseGraphAxisBounds } from "./graphAnswerUtils";
 
const NonEmptyGraph = ({ question, graphId, graphInstance }) => {
    const encoded = normalizeGraphAnswerForImport(question?.correctAnswer?.answers);
    /** The canvas must be created with the SAME range the answer was drawn against — see parseGraphAxisBounds. */
    const bounds = useMemo(() => parseGraphAxisBounds(question?.correctAnswer?.answers), [question]);
 
    const handleGraphReady = useCallback(
        (readyGraphId) => {
            if (!encoded || graphId === undefined || !graphInstance) return;
 
            try {
                graphInstance.importAnswer(encoded, readyGraphId ?? graphId);
            } catch (err) {
                console.warn(`Failed to import graph answer for graphId ${graphId}:`, err);
            }
        },
        [encoded, graphId, graphInstance]
    );
 
    const w = GRAPH2D_QUESTION_BANK_CANVAS_SIZE;
    const h = GRAPH2D_QUESTION_BANK_CANVAS_SIZE;
 
    return (
        <Box sx={{ ...drawingGraphFrameSx, width: "100%", minWidth: 0 }}>
            <DrawingGraph
                key={`nonempty-drawing-${graphId}-${bounds.xMin}-${bounds.xMax}-${bounds.yMin}-${bounds.yMax}`}
                graphId={graphId}
                width={w}
                height={h}
                instance={graphInstance}
                steps={1}
                borderPixel={5}
                responsive={false}
                readOnly
                onGraphReady={handleGraphReady}
                xMin={bounds.xMin}
                xMax={bounds.xMax}
                yMin={bounds.yMin}
                yMax={bounds.yMax}
            />
        </Box>
    );
};
 
export default NonEmptyGraph;