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// 色相阶梯\nconst saturationStep = 0.16; // 饱和度阶梯，浅色部分\nconst saturationStep2 = 0.05; // 饱和度阶梯，深色部分\nconst brightnessStep1 = 0.05; // 亮度阶梯，浅色部分\nconst brightnessStep2 = 0.15; // 亮度阶梯，深色部分\nconst lightColorCount = 5; // 浅色数量，主色上\nconst darkColorCount = 4; // 深色数量，主色下\n// 暗色主题颜色映射关系表\nconst darkColorMap = [\n { index: 7, opacity: 0.15 },\n { index: 6, opacity: 0.25 },\n { index: 5, opacity: 0.3 },\n { index: 5, opacity: 0.45 },\n { index: 5, opacity: 0.65 },\n { index: 5, opacity: 0.85 },\n { index: 4, opacity: 0.9 },\n { index: 3, opacity: 0.95 },\n { index: 2, opacity: 0.97 },\n { index: 1, opacity: 0.98 },\n];\nfunction getHue(hsv, i, light) {\n let hue;\n // 根据色相不同，色相转向不同\n if (Math.round(hsv.h) >= 60 && Math.round(hsv.h) <= 240) {\n hue = light ? Math.round(hsv.h) - hueStep * i : Math.round(hsv.h) + hueStep * i;\n }\n else {\n hue = light ? Math.round(hsv.h) + hueStep * i : Math.round(hsv.h) - hueStep * i;\n }\n if (hue < 0) {\n hue += 360;\n }\n else if (hue >= 360) {\n hue -= 360;\n }\n return hue;\n}\nfunction getSaturation(hsv, i, light) {\n // grey color don't change saturation\n if (hsv.h === 0 && hsv.s === 0) {\n return hsv.s;\n }\n let saturation;\n if (light) {\n saturation = hsv.s - saturationStep * i;\n }\n else if (i === darkColorCount) {\n saturation = hsv.s + saturationStep;\n }\n else {\n saturation = hsv.s + saturationStep2 * i;\n }\n // 边界值修正\n if (saturation > 1) {\n saturation = 1;\n }\n // 第一格的 s 限制在 0.06-0.1 之间\n if (light && i === lightColorCount && saturation > 0.1) {\n saturation = 0.1;\n }\n if (saturation < 0.06) {\n saturation = 0.06;\n }\n return Number(saturation.toFixed(2));\n}\nfunction getValue(hsv, i, light) {\n let value;\n if (light) {\n value = hsv.v + brightnessStep1 * i;\n }\n else {\n value = hsv.v - brightnessStep2 * i;\n }\n if (value > 1) {\n value = 1;\n }\n return Number(value.toFixed(2));\n}\nexport default function generate(color, opts = {}) {\n const patterns = [];\n const pColor = new TinyColor(color);\n for (let i = lightColorCount; i > 0; i -= 1) {\n const hsv = pColor.toHsv();\n const colorString = new TinyColor({\n h: getHue(hsv, i, true),\n s: getSaturation(hsv, i, true),\n v: getValue(hsv, i, true),\n }).toHexString();\n patterns.push(colorString);\n }\n patterns.push(pColor.toHexString());\n for (let i = 1; i <= darkColorCount; i += 1) {\n const hsv = pColor.toHsv();\n const colorString = new TinyColor({\n h: getHue(hsv, i),\n s: getSaturation(hsv, i),\n v: getValue(hsv, i),\n }).toHexString();\n patterns.push(colorString);\n }\n // dark theme patterns\n if (opts.theme === 'dark') {\n return darkColorMap.map(({ index, opacity }) => {\n const darkColorString = new TinyColor(opts.backgroundColor || '#141414')\n .mix(patterns[index], opacity * 100)\n .toHexString();\n return darkColorString;\n });\n }\n return patterns;\n}\n"],"file":"generate.js"} |