Mark entry/exit on review charts; clarify bars are saved then read.
Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
dekun
+184
-30
@@ -1,58 +1,212 @@
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/** 轻量蜡烛图（无外部依赖），用于复盘四周期预览 */
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/** 轻量蜡烛图（无外部依赖）：复盘四周期 + 入场/出场标注 */
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(function () {
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function drawCandleChart(canvas, bars) {
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function num(v) {
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if (v == null || v === "") return null;
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var n = Number(v);
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return Number.isFinite(n) ? n : null;
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}
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function nearestBarIndex(bars, ts) {
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if (ts == null || !bars.length) return -1;
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var best = 0;
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var bestDiff = Math.abs(Number(bars[0].ts) - ts);
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for (var i = 1; i < bars.length; i++) {
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var d = Math.abs(Number(bars[i].ts) - ts);
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if (d < bestDiff) {
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bestDiff = d;
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best = i;
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}
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}
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return best;
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}
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function drawCandleChart(canvas, bars, markers) {
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if (!canvas || !bars || !bars.length) return;
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const dpr = window.devicePixelRatio || 1;
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const cssW = canvas.clientWidth || 400;
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const cssH = canvas.clientHeight || 180;
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var dpr = window.devicePixelRatio || 1;
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var cssW = canvas.clientWidth || 400;
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var cssH = canvas.clientHeight || 180;
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canvas.width = cssW * dpr;
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canvas.height = cssH * dpr;
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const ctx = canvas.getContext("2d");
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ctx.scale(dpr, dpr);
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var ctx = canvas.getContext("2d");
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ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
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const pad = 8;
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let min = Infinity, max = -Infinity;
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bars.forEach((b) => {
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var padL = 8;
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var padR = 8;
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var padT = 18;
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var padB = 8;
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var min = Infinity;
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var max = -Infinity;
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bars.forEach(function (b) {
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min = Math.min(min, b.low);
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max = Math.max(max, b.high);
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});
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markers = markers || {};
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if (markers.openPrice != null) {
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min = Math.min(min, markers.openPrice);
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max = Math.max(max, markers.openPrice);
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}
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if (markers.closePrice != null) {
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min = Math.min(min, markers.closePrice);
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max = Math.max(max, markers.closePrice);
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}
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if (!(max > min)) {
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max = min + 1;
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}
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const w = cssW - pad * 2;
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const h = cssH - pad * 2;
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const n = bars.length;
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const slot = w / n;
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// 上下留一点边，避免标注贴边
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var padPrice = (max - min) * 0.04 || 0.5;
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min -= padPrice;
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max += padPrice;
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var w = cssW - padL - padR;
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var h = cssH - padT - padB;
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var n = bars.length;
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var slot = w / n;
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ctx.clearRect(0, 0, cssW, cssH);
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ctx.fillStyle = "#0e0e18";
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ctx.fillRect(0, 0, cssW, cssH);
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const yOf = (p) => pad + ((max - p) / (max - min)) * h;
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var yOf = function (p) {
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return padT + ((max - p) / (max - min)) * h;
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};
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var xOf = function (i) {
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return padL + i * slot + slot * 0.5;
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};
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bars.forEach((b, i) => {
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const x = pad + i * slot + slot * 0.5;
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const up = b.close >= b.open;
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// K 线
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bars.forEach(function (b, i) {
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var x = xOf(i);
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var up = b.close >= b.open;
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ctx.strokeStyle = up ? "#0ecb81" : "#f6465d";
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ctx.fillStyle = ctx.strokeStyle;
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ctx.lineWidth = 1;
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ctx.beginPath();
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ctx.moveTo(x, yOf(b.high));
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ctx.lineTo(x, yOf(b.low));
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ctx.stroke();
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const y1 = yOf(b.open);
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const y2 = yOf(b.close);
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const top = Math.min(y1, y2);
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const bh = Math.max(1, Math.abs(y2 - y1));
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var y1 = yOf(b.open);
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var y2 = yOf(b.close);
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var top = Math.min(y1, y2);
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var bh = Math.max(1, Math.abs(y2 - y1));
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ctx.fillRect(x - Math.max(1, slot * 0.3), top, Math.max(2, slot * 0.6), bh);
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});
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function drawPriceLine(price, color, label) {
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if (price == null) return;
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var y = yOf(price);
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ctx.save();
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ctx.strokeStyle = color;
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ctx.lineWidth = 1.2;
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ctx.setLineDash([5, 4]);
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ctx.beginPath();
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ctx.moveTo(padL, y);
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ctx.lineTo(cssW - padR, y);
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ctx.stroke();
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ctx.setLineDash([]);
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ctx.fillStyle = color;
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ctx.font = "11px Microsoft YaHei UI, sans-serif";
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ctx.textAlign = "left";
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ctx.textBaseline = "bottom";
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ctx.fillText(label + " " + price.toFixed(3), padL + 2, y - 2);
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ctx.restore();
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}
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function drawMarker(i, price, color, label) {
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if (i < 0 || price == null) return;
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var x = xOf(i);
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var y = yOf(price);
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// 竖线标时刻
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ctx.save();
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ctx.strokeStyle = color;
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ctx.globalAlpha = 0.35;
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ctx.lineWidth = 1;
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ctx.setLineDash([3, 3]);
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ctx.beginPath();
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ctx.moveTo(x, padT);
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ctx.lineTo(x, cssH - padB);
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ctx.stroke();
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ctx.setLineDash([]);
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ctx.globalAlpha = 1;
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// 圆点
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ctx.beginPath();
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ctx.arc(x, y, 5, 0, Math.PI * 2);
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ctx.fillStyle = color;
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ctx.fill();
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ctx.lineWidth = 1.5;
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ctx.strokeStyle = "#ffffff";
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ctx.stroke();
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// 三角指向
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ctx.beginPath();
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ctx.moveTo(x, y - 12);
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ctx.lineTo(x - 5, y - 5);
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ctx.lineTo(x + 5, y - 5);
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ctx.closePath();
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ctx.fillStyle = color;
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ctx.fill();
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ctx.font = "bold 11px Microsoft YaHei UI, sans-serif";
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ctx.fillStyle = color;
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ctx.textAlign = "center";
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ctx.textBaseline = "bottom";
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ctx.fillText(label, x, y - 14);
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ctx.restore();
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}
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var entryColor = "#4cc2ff";
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var exitColor = "#f0b429";
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var entryIdx = nearestBarIndex(bars, markers.openTs);
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var exitIdx = nearestBarIndex(bars, markers.closeTs);
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drawPriceLine(markers.openPrice, entryColor, "入场");
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drawPriceLine(markers.closePrice, exitColor, "出场");
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drawMarker(entryIdx, markers.openPrice, entryColor, "入场");
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if (markers.closeTs != null && markers.closePrice != null) {
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drawMarker(exitIdx, markers.closePrice, exitColor, "出场");
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}
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// 入场→出场连线（同图内）
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if (
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entryIdx >= 0 &&
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exitIdx >= 0 &&
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markers.openPrice != null &&
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markers.closePrice != null &&
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markers.closeTs != null
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) {
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ctx.save();
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ctx.strokeStyle = "#c084fc";
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ctx.lineWidth = 1.4;
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ctx.setLineDash([4, 3]);
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ctx.beginPath();
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ctx.moveTo(xOf(entryIdx), yOf(markers.openPrice));
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ctx.lineTo(xOf(exitIdx), yOf(markers.closePrice));
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ctx.stroke();
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ctx.restore();
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}
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}
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function readMarkers(el) {
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return {
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openTs: num(el.dataset.openTs),
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closeTs: num(el.dataset.closeTs),
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openPrice: num(el.dataset.openPrice),
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closePrice: num(el.dataset.closePrice),
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side: el.dataset.side || "",
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};
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}
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function paintAll() {
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document.querySelectorAll("canvas.chart-canvas").forEach(function (el) {
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try {
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var bars = JSON.parse(el.dataset.bars || "[]");
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drawCandleChart(el, bars, readMarkers(el));
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} catch (e) {
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console.warn(e);
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}
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});
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}
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document.querySelectorAll("canvas.chart-canvas").forEach((el) => {
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try {
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const bars = JSON.parse(el.dataset.bars || "[]");
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drawCandleChart(el, bars);
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} catch (e) {
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console.warn(e);
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}
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});
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paintAll();
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window.addEventListener("resize", paintAll);
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})();
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