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zadit frontend
226
src/components/TableCanvas.js
Normal file
226
src/components/TableCanvas.js
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import React, { useRef, useState, useEffect } from "react";
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const TableCanvas = ({
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tables,
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selectedTable,
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newTable,
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setTableNo,
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handleSelectTable,
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handleAddTable,
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moveTable,
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handleSave,
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handleCancel,
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handleSetTableNo,
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tableNo,
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}) => {
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const canvasRef = useRef(null);
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const containerRef = useRef(null);
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const [canvasSize, setCanvasSize] = useState({ width: 0, height: 0 });
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const padding = 50;
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const rectWidth = 40;
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const rectHeight = 30;
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useEffect(() => {
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const handleResize = () => {
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if (containerRef.current) {
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const { clientWidth, clientHeight } = containerRef.current;
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setCanvasSize({ width: clientWidth, height: clientHeight });
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}
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};
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handleResize();
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window.addEventListener("resize", handleResize);
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return () => window.removeEventListener("resize", handleResize);
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}, []);
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useEffect(() => {
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if (
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tables.length === 0 ||
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canvasSize.width === 0 ||
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canvasSize.height === 0
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)
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return;
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const canvas = canvasRef.current;
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const context = canvas.getContext("2d");
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canvas.width = canvasSize.width;
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canvas.height = canvasSize.height;
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context.clearRect(0, 0, canvas.width, canvas.height);
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const allTables = newTable ? [...tables, newTable] : tables;
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const hasMultipleTables = allTables.length > 1;
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const minX = hasMultipleTables
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? Math.min(...allTables.map((table) => table.xposition))
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: 0;
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const minY = hasMultipleTables
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? Math.min(...allTables.map((table) => table.yposition))
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: 0;
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const maxX = hasMultipleTables
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? Math.max(...allTables.map((table) => table.xposition))
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: 1;
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const maxY = hasMultipleTables
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? Math.max(...allTables.map((table) => table.yposition))
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: 1;
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const patternWidth = maxX - minX;
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const patternHeight = maxY - minY;
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const scaleX =
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patternWidth > 0 ? (canvas.width - 2 * padding) / patternWidth : 1;
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const scaleY =
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patternHeight > 0 ? (canvas.height - 2 * padding) / patternHeight : 1;
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const scale = Math.min(scaleX, scaleY);
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const scaledTables = allTables.map((table) => ({
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...table,
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xposition: (table.xposition - minX) * scale + padding,
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yposition: (table.yposition - minY) * scale + padding,
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}));
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scaledTables.forEach((table) => {
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context.beginPath();
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context.rect(table.xposition, table.yposition, rectWidth, rectHeight);
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context.fillStyle =
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table.tableId === (selectedTable?.tableId || newTable?.tableId)
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? "red"
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: "blue";
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context.fill();
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context.stroke();
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context.font = "12px Arial";
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context.fillStyle = "white";
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context.textAlign = "center";
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context.textBaseline = "middle";
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context.fillText(
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table.tableId === (selectedTable?.tableId || newTable?.tableId)
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? tableNo === 0
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? "clerk"
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: tableNo
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: table.tableNo === 0
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? "clerk"
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: table.tableNo,
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table.xposition + rectWidth / 2,
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table.yposition + rectHeight / 2
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);
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});
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}, [tables, canvasSize, newTable, selectedTable, tableNo]);
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return (
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<div ref={containerRef} style={{ width: "100%", height: "100%" }}>
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<canvas
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ref={canvasRef}
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style={{
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display: "block",
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borderRadius: "5px",
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backgroundColor: "#e9e9e9",
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}}
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onClick={handleSelectTable}
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/>
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<div>
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{!selectedTable && !newTable && (
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<button
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onClick={handleAddTable}
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style={{
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display: "block",
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width: "100%",
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padding: "10px",
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backgroundColor: "#007bff",
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color: "#fff",
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border: "none",
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borderRadius: "4px",
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fontSize: "16px",
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cursor: "pointer",
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marginBottom: "10px",
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transition: "background-color 0.3s ease",
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}}
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>
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Add Table
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</button>
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)}
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{(selectedTable || newTable) && (
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<div
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style={{
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display: "flex",
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flexDirection: "column",
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alignItems: "center",
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}}
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>
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<div
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style={{
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display: "flex",
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justifyContent: "center",
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marginBottom: "10px",
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}}
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>
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<button onClick={() => moveTable("left")} style={buttonStyle}>
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{"◄"}
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</button>
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<button onClick={() => moveTable("up")} style={buttonStyle}>
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{"▲"}
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</button>
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<button onClick={() => moveTable("down")} style={buttonStyle}>
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{"▼"}
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</button>
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<button onClick={() => moveTable("right")} style={buttonStyle}>
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{"►"}
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</button>
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</div>
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<div
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style={{
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display: "flex",
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alignItems: "center",
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marginBottom: "10px",
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}}
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>
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<input
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type="text"
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placeholder="Table No"
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value={tableNo}
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disabled={tableNo === 0 ? "disabled" : ""}
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onChange={handleSetTableNo}
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style={{
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marginRight: "10px",
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padding: "10px",
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fontSize: "16px",
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borderRadius: "4px",
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border: "1px solid #ddd",
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boxShadow: "0 1px 2px rgba(0,0,0,0.1)",
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width: "100px",
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}}
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/>
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<button onClick={handleCancel} style={actionButtonStyle}>
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Cancel
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</button>
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{(newTable || selectedTable) && (
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<button onClick={handleSave} style={actionButtonStyle}>
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Save
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</button>
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)}
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</div>
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</div>
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)}
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</div>
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</div>
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);
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};
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const buttonStyle = {
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padding: "10px",
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fontSize: "20px",
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border: "1px solid #ddd",
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borderRadius: "4px",
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cursor: "pointer",
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margin: "0 5px",
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};
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const actionButtonStyle = {
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padding: "10px 20px",
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fontSize: "16px",
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border: "none",
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borderRadius: "4px",
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cursor: "pointer",
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margin: "0 5px",
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transition: "background-color 0.3s ease, color 0.3s ease",
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};
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export default TableCanvas;
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