Refactoring: simplify random color API usage

src/main/kotlin/com/github/izhangzhihao/rainbow/brackets/RainbowHighlighter.kt

@@ -1,6 +1,5 @@
 package com.github.izhangzhihao.rainbow.brackets
 
-import com.github.izhangzhihao.rainbow.brackets.fromRGBstr
 import com.github.izhangzhihao.rainbow.brackets.settings.RainbowSettings
 import com.github.izhangzhihao.rainbow.brackets.util.memoize
 import com.intellij.codeInsight.daemon.impl.HighlightInfo
@@ -133,7 +132,7 @@ object RainbowHighlighter {
     }
 
     private fun genByOption(option: String) =
-            TextAttributes(fromRGBstr(randomColor(option)), null, null, null, 0)
+            TextAttributes(randomColor(option), null, null, null, 0)
 
     val memGetRainbowColorByLevel = { isDark: Boolean, rainbowName: String, level: Int -> generateColor(isDark, rainbowName, level) }.memoize()
 

src/main/kotlin/com/github/izhangzhihao/rainbow/brackets/RandomColorGenerator.kt

@@ -5,7 +5,7 @@ import com.github.izhangzhihao.rainbow.brackets.color.fromString
 import org.json.JSONObject
 import java.awt.Color
 
-fun randomColor(options: String): String {
+fun randomColor(options: String): Color {
     val options = JSONObject(options)
     return com.github.izhangzhihao.rainbow.brackets.color.randomColor(
         fromString(options.getStringOrDefault("hue", "random")),
@@ -19,9 +19,4 @@ fun org.json.JSONObject.getStringOrDefault(key: String, default: String): String
     } catch (e: Exception) {
         default
     }
-}
-
-fun fromRGBstr(str: String): Color {
-    val split = str.trimStart('(').trimEnd(')').split(", ")
-    return Color(split[0].toInt(), split[1].toInt(), split[2].toInt())
 }

src/main/kotlin/com/github/izhangzhihao/rainbow/brackets/color/Format.kt

@@ -1,7 +0,0 @@
-package com.github.izhangzhihao.rainbow.brackets.color
-
-enum class Format {
-    HSL,
-    RGB,
-    HEX
-}

src/main/kotlin/com/github/izhangzhihao/rainbow/brackets/color/Hue.kt

@@ -15,9 +15,9 @@ fun Hue.getHueRange(): Pair<Int, Int> {
 }
 
 fun fromString(str: String): Hue {
-    return when (str) {
-        "random" -> RandomHue
-        is String -> ColorHue(Color.valueOf(str))
-        else -> TODO()
+    return when {
+        str == "random" -> RandomHue
+        str.startsWith("#") -> NumberHue(Integer.parseInt(str.replaceFirst("#", ""), 16))
+        else -> ColorHue(Color.valueOf(str))
     }
 }

src/main/kotlin/com/github/izhangzhihao/rainbow/brackets/color/RandomKolor.kt

@@ -10,8 +10,7 @@ import kotlin.random.Random
 fun randomColor(
     hue: Hue = RandomHue,
     luminosity: Luminosity = Luminosity.random,
-    format: Format = Format.RGB
-): String {
+): java.awt.Color {
 
     // First we pick a hue (H)
     val hueValue = pickHue(hue)
@@ -22,8 +21,7 @@ fun randomColor(
     // Then use S and H to determine brightness (B)
     val brightness = pickBrightness(hueValue, hue, saturation, luminosity)
 
-    // Then we return the HSB color in the desired format
-    return setFormat(hueValue, saturation, brightness, format)
+    return toColor(hueValue, saturation, brightness)
 }
 
 private fun pickHue(hue: Hue): Int {
@@ -69,12 +67,9 @@ private fun pickBrightness(hueValue: Int, hue: Hue, saturation: Int, luminosity:
     }
 }
 
-private fun setFormat(hueValue: Int, saturation: Int, brightness: Int, format: Format): String {
-    return when (format) {
-        Format.HSL -> TODO()
-        Format.RGB -> HSVtoRGB(hueValue, saturation, brightness).toString()
-        Format.HEX -> TODO()
-    }
+private fun toColor(hueValue: Int, saturation: Int, brightness: Int): java.awt.Color {
+    val rgb = HSVtoRGB(hueValue, saturation, brightness)
+    return java.awt.Color(rgb.first, rgb.second, rgb.third)
 }