ramseshk
f198d2ccf6
Replaces the cramped 480px component with a full-screen
production-grade trading terminal:
DOM Ladder (25%):
- 40 price rows centered on mid
- Bid/ask volume bars with opacity scaling
- Floating mid price, volume text on both sides
Depth Heatmap (75%):
- Cumulative volume profile (filled gradient areas)
- Green bid fill, red ask fill
- Yellow dashed mid line with floating labels
- Price axis, volume scale, imbalance gauge
Trade Tape (30% bottom):
- Amber trade path with colored markers
- Sized dots (trade size proportional)
- Latest trade callout with direction
Header bar:
- Live connection indicator, mid, spread, imbalance
- Real-time trade count
Access: click L2 Depth Map button on main dashboard
Fullscreen overlay with close button, ESC to dismiss
387 lines
14 KiB
TypeScript
387 lines
14 KiB
TypeScript
"use client";
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import { useEffect, useRef, useState, useMemo } from "react";
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import { useHyperliquidWebSocket, type L2Snapshot, type TradeTapeEntry } from "@/lib/hyperliquid-ws";
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// ═══════════ Colors ═══════════
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const BID_C = "#00C853";
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const ASK_C = "#FF1744";
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const MID_C = "#FFEB3B";
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const TRADE_C = "#FFAB00";
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const TXT = "#CCCCCC";
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const TXT_B = "#FFFFFF";
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const BG = "#000000";
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const PANEL_BG = "#0A0A10";
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const GRID = "rgba(255,255,255,0.03)";
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interface Props {
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coin?: string;
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className?: string;
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}
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export default function L2Terminal({ coin = "BTC", className = "" }: Props) {
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const { l2, trades, connected, error } = useHyperliquidWebSocket(coin);
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const domCanvas = useRef<HTMLCanvasElement>(null);
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const depthCanvas = useRef<HTMLCanvasElement>(null);
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const tapeCanvas = useRef<HTMLCanvasElement>(null);
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const containerRef = useRef<HTMLDivElement>(null);
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const [dims, setDims] = useState({ w: 1200, h: 800 });
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useEffect(() => {
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const cb = () => {
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if (containerRef.current) {
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setDims({ w: containerRef.current.clientWidth, h: window.innerHeight - 64 });
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}
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};
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cb();
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window.addEventListener("resize", cb);
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return () => window.removeEventListener("resize", cb);
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}, []);
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// ═══════ DOM Ladder (Left 25%) ═══════
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useEffect(() => {
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const canvas = domCanvas.current;
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if (!canvas || !l2) return;
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const ctx = canvas.getContext("2d")!;
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const dpr = window.devicePixelRatio || 1;
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const W = canvas.clientWidth;
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const H = canvas.clientHeight;
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canvas.width = W * dpr;
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canvas.height = H * dpr;
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ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
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ctx.fillStyle = BG;
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ctx.fillRect(0, 0, W, H);
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const M = { top: 20, bot: 20, left: 8, right: 4 };
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const pH = (H - M.top - M.bot) / 40; // 40 price rows
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const mid = l2.mid;
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const step = Math.max(l2.spread * 2, mid * 0.0001);
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const maxVol = Math.max(
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...l2.bids.map(b => b.sz).slice(0, 40),
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...l2.asks.map(a => a.sz).slice(0, 40),
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1
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);
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// Draw price ladder
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for (let i = -20; i <= 20; i++) {
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const px = mid + i * step;
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const y = M.top + (20 - i) * pH;
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const bidSz = l2.bids.find(b => Math.abs(b.px - px) < step * 0.5)?.sz ?? 0;
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const askSz = l2.asks.find(a => Math.abs(a.px - px) < step * 0.5)?.sz ?? 0;
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// Row background
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ctx.fillStyle = i === 0 ? "rgba(255,235,59,0.08)" : i % 2 ? "rgba(255,255,255,0.01)" : "transparent";
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ctx.fillRect(0, y, W, pH);
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// Bid volume bar
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if (bidSz > 0) {
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const w = (bidSz / maxVol) * W * 0.45;
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ctx.fillStyle = BID_C;
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ctx.globalAlpha = 0.25 + 0.5 * (bidSz / maxVol);
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ctx.fillRect(W * 0.05, y + 1, w, pH - 2);
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}
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// Ask volume bar
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if (askSz > 0) {
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const w = (askSz / maxVol) * W * 0.45;
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ctx.fillStyle = ASK_C;
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ctx.globalAlpha = 0.25 + 0.5 * (askSz / maxVol);
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ctx.fillRect(W * 0.55, y + 1, w, pH - 2);
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}
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ctx.globalAlpha = 1;
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// Price text
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ctx.fillStyle = i === 0 ? TXT_B : TXT;
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ctx.font = `${i === 0 ? "bold " : ""}10px "JetBrains Mono", monospace`;
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ctx.textAlign = "center";
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ctx.fillText(px.toFixed(1), W / 2, y + pH * 0.65);
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// Volume text
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ctx.font = "8px monospace";
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ctx.textAlign = "left";
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if (bidSz > 0.01) ctx.fillText(bidSz.toFixed(1), W * 0.05 + 4, y + pH * 0.65);
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ctx.textAlign = "right";
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if (askSz > 0.01) ctx.fillText(askSz.toFixed(1), W - 4, y + pH * 0.65);
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}
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// Header
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ctx.font = "9px monospace";
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ctx.textAlign = "left";
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ctx.fillText("DEPTH OF MARKET", 4, 10);
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ctx.textAlign = "right";
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ctx.fillText(`${coin}-USD`, W - 4, 10);
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}, [l2, coin, dims]);
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// ═══════ Depth Heatmap (Right 45%) ═══════
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useEffect(() => {
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const canvas = depthCanvas.current;
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if (!canvas || !l2) return;
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const ctx = canvas.getContext("2d")!;
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const dpr = window.devicePixelRatio || 1;
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const W = canvas.clientWidth;
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const H = canvas.clientHeight;
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canvas.width = W * dpr;
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canvas.height = H * dpr;
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ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
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ctx.fillStyle = PANEL_BG;
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ctx.fillRect(0, 0, W, H);
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const M = { top: 20, bot: 25, left: 40, right: 10 };
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const pW = W - M.left - M.right;
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const pH = H - M.top - M.bot;
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const mid = l2.mid;
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const range = mid * 0.02;
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const pMin = mid - range;
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const pMax = mid + range;
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const p2x = (px: number) => M.left + ((px - pMin) / (pMax - pMin)) * pW;
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// Find max vol
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const allVol = [...l2.bids.slice(0, 80), ...l2.asks.slice(0, 80)];
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const maxV = Math.max(...allVol.map(v => v.sz), 10);
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// Grid
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ctx.strokeStyle = GRID;
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ctx.lineWidth = 0.5;
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for (let i = 0; i <= 8; i++) {
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const y = M.top + (i / 8) * pH;
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ctx.beginPath(); ctx.moveTo(M.left, y); ctx.lineTo(M.left + pW, y); ctx.stroke();
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}
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// Draw cumulative volume profile
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const drawProfile = (levels: { px: number; sz: number }[], color: string, fromMid: boolean) => {
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ctx.beginPath();
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let cumVol = 0;
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const sorted = [...levels].sort((a, b) => fromMid ? b.px - a.px : a.px - b.px);
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// Draw filled area
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for (let i = 0; i < sorted.length; i++) {
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cumVol += sorted[i].sz;
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const x = p2x(sorted[i].px);
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const y = M.top + pH - (cumVol / maxV) * pH;
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if (i === 0) ctx.moveTo(x, M.top + pH);
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ctx.lineTo(x, y);
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}
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// Close and fill
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const lastX = p2x(sorted[sorted.length - 1]?.px ?? mid);
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ctx.lineTo(lastX, M.top + pH);
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ctx.closePath();
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const grad = ctx.createLinearGradient(0, 0, 0, H);
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grad.addColorStop(0, color + "80");
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grad.addColorStop(1, color + "10");
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ctx.fillStyle = grad;
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ctx.fill();
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};
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drawProfile(l2.bids.slice(0, 80), BID_C, true);
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drawProfile(l2.asks.slice(0, 80), ASK_C, false);
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// Mid line
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const midX = p2x(mid);
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ctx.strokeStyle = MID_C;
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ctx.lineWidth = 1.5;
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ctx.setLineDash([4, 3]);
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ctx.beginPath(); ctx.moveTo(midX, M.top); ctx.lineTo(midX, M.top + pH); ctx.stroke();
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ctx.setLineDash([]);
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// Mid price labels
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ctx.fillStyle = TXT_B;
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ctx.font = "bold 13px 'JetBrains Mono', monospace";
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ctx.textAlign = "center";
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ctx.fillText(mid.toFixed(1), midX, M.top + pH / 2 - 8);
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ctx.fillText(mid.toFixed(1), midX, M.top + pH / 2 + 20);
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// Orange mid marker
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ctx.fillStyle = "#FF9100";
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ctx.beginPath(); ctx.arc(midX, M.top + pH, 4, 0, Math.PI * 2); ctx.fill();
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// Price axis labels
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ctx.fillStyle = TXT;
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ctx.font = "8px monospace";
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ctx.textAlign = "center";
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for (let i = 0; i <= 5; i++) {
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const px = pMin + (i / 5) * (pMax - pMin);
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ctx.fillText(px.toFixed(0), p2x(px), M.top + pH + 15);
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}
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// Volume scale
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ctx.textAlign = "right";
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for (let i = 0; i <= 4; i++) {
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const v = Math.round(maxV * i / 4);
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ctx.fillText(v.toLocaleString(), M.left - 4, M.top + pH - (i / 4) * pH + 3);
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}
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// Imbalance gauge
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const imb = l2.imbalance;
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ctx.fillStyle = TXT;
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ctx.font = "9px monospace";
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ctx.textAlign = "left";
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const imbStr = `I = ${imb >= 0 ? "+" : ""}${imb.toFixed(3)} | (Vb-Va)/(Vb+Va)`;
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ctx.fillText(imbStr, 8, 12);
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// Spread
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ctx.textAlign = "right";
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ctx.fillText(`Spread: ${l2.spread.toFixed(1)}`, W - 8, 12);
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// Volume totals
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ctx.fillStyle = BID_C;
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ctx.textAlign = "left";
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ctx.fillText(`Bid: ${l2.totalBidVol.toFixed(1)} BTC`, 8, M.top + pH + 22);
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ctx.fillStyle = ASK_C;
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ctx.textAlign = "right";
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ctx.fillText(`Ask: ${l2.totalAskVol.toFixed(1)} BTC`, W - 8, M.top + pH + 22);
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}, [l2, dims]);
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// ═══════ Trade Tape (Bottom 30%) ═══════
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useEffect(() => {
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const canvas = tapeCanvas.current;
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if (!canvas || trades.length < 2) return;
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const ctx = canvas.getContext("2d")!;
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const dpr = window.devicePixelRatio || 1;
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const W = canvas.clientWidth;
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const H = canvas.clientHeight;
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canvas.width = W * dpr;
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canvas.height = H * dpr;
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ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
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ctx.fillStyle = PANEL_BG;
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ctx.fillRect(0, 0, W, H);
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const M = { top: 20, bot: 12, left: 40, right: 8 };
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const pW = W - M.left - M.right;
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const pH = H - M.top - M.bot;
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const prices = trades.map(t => t.px);
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const pMin = Math.min(...prices);
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const pMax = Math.max(...prices);
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const pRange = (pMax - pMin) || 1;
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const pad = pRange * 0.15 || 5;
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const pLo = pMin - pad;
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const pHi = pMax + pad;
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const p2y = (px: number) => M.top + pH - ((px - pLo) / (pHi - pLo)) * pH;
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// Grid
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ctx.strokeStyle = GRID;
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ctx.lineWidth = 0.5;
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for (let i = 0; i <= 4; i++) {
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const y = M.top + (i / 4) * pH;
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ctx.beginPath(); ctx.moveTo(M.left, y); ctx.lineTo(M.left + pW, y); ctx.stroke();
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}
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// Trade path
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ctx.strokeStyle = TRADE_C;
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ctx.lineWidth = 1.5;
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ctx.beginPath();
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for (let i = 0; i < trades.length; i++) {
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const x = M.left + (i / Math.max(trades.length - 1, 1)) * pW;
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const y = p2y(trades[i].px);
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if (i === 0) ctx.moveTo(x, y);
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else ctx.lineTo(x, y);
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}
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ctx.stroke();
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// Trade markers
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const maxSz = Math.max(...trades.map(t => t.sz), 1);
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for (let i = 0; i < trades.length; i++) {
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const t = trades[i];
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const x = M.left + (i / Math.max(trades.length - 1, 1)) * pW;
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const y = p2y(t.px);
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const r = Math.max(1.5, (t.sz / maxSz) * 4 + 1);
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ctx.fillStyle = t.side === "buy" ? "#4CAF50" : "#F44336";
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ctx.globalAlpha = 0.6;
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ctx.beginPath(); ctx.arc(x, y, r, 0, Math.PI * 2); ctx.fill();
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}
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ctx.globalAlpha = 1;
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// Latest trade callout
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const last = trades[trades.length - 1];
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const lx = M.left + pW;
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const ly = p2y(last.px);
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ctx.fillStyle = last.side === "buy" ? "#00E676" : "#FF5252";
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ctx.font = "bold 14px 'JetBrains Mono', monospace";
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ctx.textAlign = "left";
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ctx.fillText(`${last.side === "buy" ? "B" : "S"} ${last.px.toFixed(1)}`, 8, 14);
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ctx.fillStyle = TXT;
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ctx.font = "10px monospace";
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ctx.fillText(` | ${last.sz.toFixed(4)} BTC`, 140, 14);
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// Trade count
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ctx.textAlign = "right";
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ctx.fillText(`${trades.length} trades`, W - 8, 14);
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// Price labels
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ctx.textAlign = "right";
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ctx.font = "8px monospace";
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for (let i = 0; i <= 3; i++) {
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const px = pLo + (i / 3) * (pHi - pLo);
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ctx.fillText(px.toFixed(1), M.left - 4, p2y(px) + 3);
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}
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}, [trades, dims]);
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// Has data?
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const noData = !l2 && !error;
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return (
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<div ref={containerRef} className={`relative bg-black overflow-hidden ${className}`}>
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{/* Header bar */}
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<div className="flex items-center justify-between px-4 py-2 bg-[#0D0D15] border-b border-[#1A1A2E]">
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<div className="flex items-center gap-3">
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<span className="text-xs text-gray-400 font-mono">L2 ORDER BOOK</span>
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<span className="text-[10px] text-gray-600">·</span>
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<span className="text-xs text-white font-mono font-bold">{coin}-USD</span>
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<span className="text-[10px] text-gray-600">·</span>
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<span className={`w-2 h-2 rounded-full ${connected ? "bg-green-500" : "bg-red-500"}`} />
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<span className="text-[10px] text-gray-500">{connected ? "LIVE" : "RECONNECTING"}</span>
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</div>
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<div className="flex items-center gap-4">
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{l2 && (
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<>
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<span className="text-[10px] text-gray-500">Mid</span>
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<span className="text-xs text-white font-mono font-bold">{l2.mid.toFixed(1)}</span>
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<span className="text-[10px] text-gray-500">Spread</span>
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<span className="text-xs text-white font-mono">{l2.spread.toFixed(1)}</span>
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<span className="text-[10px] text-gray-500">Imb</span>
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<span className={`text-xs font-mono ${l2.imbalance >= 0 ? "text-green-400" : "text-red-400"}`}>
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{l2.imbalance >= 0 ? "+" : ""}{l2.imbalance.toFixed(3)}
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</span>
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</>
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)}
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<span className="text-[10px] text-gray-500">Trades</span>
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<span className="text-xs text-white font-mono">{trades.length}</span>
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</div>
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</div>
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{/* Main grid: DOM Ladder | Depth Heatmap */}
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<div className="flex" style={{ height: dims.h * 0.70 }}>
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{/* DOM Ladder - 25% */}
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<div className="w-[25%] border-r border-[#1A1A2E] relative">
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<canvas ref={domCanvas} className="w-full h-full" />
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{noData && <div className="absolute inset-0 flex items-center justify-center"><span className="text-gray-600 text-xs">Waiting for L2...</span></div>}
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</div>
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{/* Depth Heatmap - 75% */}
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<div className="w-[75%] relative">
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<canvas ref={depthCanvas} className="w-full h-full" />
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{noData && <div className="absolute inset-0 flex items-center justify-center"><span className="text-gray-600 text-xs">Waiting for L2...</span></div>}
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</div>
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</div>
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{/* Bottom: Trade Tape */}
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<div className="border-t border-[#1A1A2E]" style={{ height: dims.h * 0.30 }}>
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<canvas ref={tapeCanvas} className="w-full h-full" />
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{trades.length < 2 && !error && (
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<div className="absolute inset-0 flex items-center justify-center" style={{ bottom: dims.h * 0.15 }}>
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<span className="text-gray-600 text-xs">Waiting for trades...</span>
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</div>
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)}
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</div>
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{/* Error banner */}
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{error && (
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<div className="absolute bottom-0 left-0 right-0 bg-red-900/50 text-red-300 text-[9px] px-2 py-1 font-mono">
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{error} — reconnecting every 2s
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</div>
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)}
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</div>
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);
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}
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