diff --git a/webapp/ap_chart.js b/webapp/ap_chart.js index 80c7110e2..b2c49bb02 100644 --- a/webapp/ap_chart.js +++ b/webapp/ap_chart.js @@ -74,6 +74,11 @@ ctx.scale(dpr, dpr); var oc = ovCv.getContext("2d"); + // 硬币刻度标签布局常量 + var COIN_TICK_X = 8; // 右侧刻度标签相对 pad.r 的水平偏移 + var COIN_TICK_BASELINE = 4; // 单币时文字基线垂直偏移 + var COIN_TICK_STACK_GAP = 12; // 双币堆叠时紫币相对黄币的垂直偏移 + var pad = {t: 20, r: showCoins ? 72 : 20, b: 52, l: 52}; var gW = W - pad.l - pad.r, gH = H - pad.t - pad.b; @@ -129,16 +134,36 @@ var hasCoins = hasYellowCoins || hasPurpleCoins; - function xOfLine(i) { return pad.l + (i / Math.max(nn - 1, 1)) * gW; } - function yOf(v) { return pad.t + gH - (v - allMin) / (allMax - allMin) * gH; } + // 硬币绘制参数化配置（颜色 / 范围 / 垂直偏移），driven by drawCoinTicks + var COIN_CONFIGS = [ + { has: hasYellowCoins, color: "#ffd54f", dataMin: yellowMin, dataMax: yellowMax, offsetY: 0 }, + { has: hasPurpleCoins, color: "#ce93d8", dataMin: purpleMin, dataMax: purpleMax, offsetY: hasYellowCoins ? COIN_TICK_STACK_GAP : 0 } + ]; - // 黄币曲线映射到完整图表区域 - function yOfYellow(v) { - return pad.t + gH - (v - yellowMin) / (yellowMax - yellowMin) * gH; + function xOfLine(i) { return pad.l + (i / Math.max(nn - 1, 1)) * gW; } + // 通用 Y 坐标映射：将 value 从 [rangeMin, rangeMax] 映射到绘图区域（所有纵向映射的唯一来源） + function yScale(value, rangeMin, rangeMax) { + return pad.t + gH - (value - rangeMin) / (rangeMax - rangeMin) * gH; } - // 紫币曲线映射到完整图表区域 - function yOfPurple(v) { - return pad.t + gH - (v - purpleMin) / (purpleMax - purpleMin) * gH; + function yOf(v) { return yScale(v, allMin, allMax); } + function yOfYellow(v) { return yScale(v, yellowMin, yellowMax); } + function yOfPurple(v) { return yScale(v, purpleMin, purpleMax); } + + function drawCoinTicks(ctx, yOfMain, mainMin, mainMax) { + if (!hasCoins) return; + ctx.font = "10px -apple-system, sans-serif"; + ctx.textAlign = "left"; + for (var i = 0; i <= 5; i++) { + var mainVal = mainMin + (mainMax - mainMin) * (i / 5); + var y = yOfMain(mainVal); + for (var ci = 0; ci < COIN_CONFIGS.length; ci++) { + var cfg = COIN_CONFIGS[ci]; + if (!cfg.has) continue; + var val = cfg.dataMin + (cfg.dataMax - cfg.dataMin) * (i / 5); + ctx.fillStyle = cfg.color; + ctx.fillText(Math.round(val), W - pad.r + COIN_TICK_X, y + COIN_TICK_BASELINE + cfg.offsetY); + } + } } function drawCoinsLine(xOf, start, end) { @@ -203,31 +228,7 @@ ctx.fillText(Math.round(v), pad.l - 8, y); } - // 右侧同行双币刻度，与左侧K线价格行一一对应，黄币在上、紫币紧挨在下 - if (hasCoins) { - for (var i = 0; i <= 5; i++) { - var mainVal = allMin + (allMax - allMin) * (i / 5); - var y = yOf(mainVal); - if (hasYellowCoins) { - var yv = yellowMin + (yellowMax - yellowMin) * (i / 5); - ctx.fillStyle = "#ffd54f"; - ctx.font = "10px -apple-system, sans-serif"; - ctx.textAlign = "left"; - ctx.fillText(Math.round(yv), W - pad.r + 8, y + 4); - } - if (hasPurpleCoins) { - var pv = purpleMin + (purpleMax - purpleMin) * (i / 5); - ctx.fillStyle = "#ce93d8"; - ctx.font = "10px -apple-system, sans-serif"; - ctx.textAlign = "left"; - if (hasYellowCoins) { - ctx.fillText(Math.round(pv), W - pad.r + 8, y + 4 + 12); - } else { - ctx.fillText(Math.round(pv), W - pad.r + 8, y + 4); - } - } - } - } + drawCoinTicks(ctx, yOf, allMin, allMax); var avgY = yOf(avg); ctx.save(); @@ -399,7 +400,7 @@ var idx = Math.round(visibleStart + (mx_ - pad.l) / xScale); idx = Math.max(0, Math.min(nn - 1, idx)); var px = pad.l + (idx - visibleStart) * xScale; - var py = pad.t + gH - (ap[idx] - dMin) / (dMax - dMin) * gH; + var py = yScale(ap[idx], dMin, dMax); oc.strokeStyle = "rgba(255,255,255,0.18)"; oc.lineWidth = 1; @@ -554,46 +555,22 @@ ctx.textBaseline = "middle"; for (var i = 0; i <= 5; i++) { var v = dMin + (dMax - dMin) * (i / 5); - var y = pad.t + gH - (v - dMin) / (dMax - dMin) * gH; + var y = yScale(v, dMin, dMax); ctx.beginPath(); ctx.moveTo(pad.l, y); ctx.lineTo(W - pad.r, y); ctx.stroke(); ctx.fillText(Math.round(v), pad.l - 8, y); } - // 右侧同行双币刻度，与左侧K线价格行一一对应，黄币在上、紫币紧挨在下 - if (hasCoins) { - for (var i = 0; i <= 5; i++) { - var mainVal = dMin + (dMax - dMin) * (i / 5); - var y = dyOf(mainVal); - if (hasYellowCoins) { - var yv = yellowMin + (yellowMax - yellowMin) * (i / 5); - ctx.fillStyle = "#ffd54f"; - ctx.font = "10px -apple-system, sans-serif"; - ctx.textAlign = "left"; - ctx.fillText(Math.round(yv), W - pad.r + 8, y + 4); - } - if (hasPurpleCoins) { - var pv = purpleMin + (purpleMax - purpleMin) * (i / 5); - ctx.fillStyle = "#ce93d8"; - ctx.font = "10px -apple-system, sans-serif"; - ctx.textAlign = "left"; - if (hasYellowCoins) { - ctx.fillText(Math.round(pv), W - pad.r + 8, y + 4 + 12); - } else { - ctx.fillText(Math.round(pv), W - pad.r + 8, y + 4); - } - } - } - } + var xScale = gW / Math.max(visibleNn - 1, 1); + function dxOf(i) { return pad.l + (i - visibleStart) * xScale; } + function dyOf(v) { return yScale(v, dMin, dMax); } + + drawCoinTicks(ctx, dyOf, dMin, dMax); ctx.fillStyle = "#666"; ctx.font = "10px -apple-system, sans-serif"; ctx.textAlign = "center"; ctx.textBaseline = "top"; - var xScale = gW / Math.max(visibleNn - 1, 1); - function dxOf(i) { return pad.l + (i - visibleStart) * xScale; } - function dyOf(v) { return pad.t + gH - (v - dMin) / (dMax - dMin) * gH; } - var dgrad = ctx.createLinearGradient(0, pad.t, 0, pad.t + gH); dgrad.addColorStop(0, "rgba(100,181,246,0.15)"); dgrad.addColorStop(1, "rgba(100,181,246,0.02)");