chore: reduce memory usage

src/main/kotlin/cn/rtast/fancybot/commands/lookup/GithubUserCommand.kt

@@ -61,6 +61,7 @@ class GithubUserCommand : BaseCommand() {
         }
         g2d.drawString("114514/1919810", 40, 560)
         g2d.drawCustomImage(userAvatar, 40, canvasHeight / 2 - 250, 170.0, 170.0, true)
+        g2d.dispose()
         return canvas.toByteArray().encodeToBase64()
     }
 

src/main/kotlin/cn/rtast/fancybot/commands/lookup/WeatherCommand.kt

@@ -32,22 +32,25 @@ class WeatherCommand : BaseCommand() {
     private val canvasHeight = 600
     private val font = Font("Serif", Font.PLAIN, 60).deriveFont(Font.BOLD or Font.ITALIC)
     private val locationFont = Font("Serif", Font.PLAIN, 50).deriveFont(Font.BOLD or Font.ITALIC)
+    private val backgroundColor = Color(209, 238, 238)
+    private val textColor = Color.BLACK
+    private val licenseColor = Color(155, 48, 255)
 
     private fun createWeatherCard(weather: Weather, geoResult: Geo.Location): String {
         val emptyImage = BufferedImage(canvasWidth, canvasHeight, BufferedImage.TYPE_INT_RGB)
         val g2d = emptyImage.createGraphics()
         val weatherIcon = Resources.loadFromResourcesAsBytes("qweather/${weather.now.icon}.png")
             ?: Resources.loadFromResourcesAsBytes("qweather/999.png")!!
-        g2d.color = Color(209, 238, 238)
+        g2d.color = backgroundColor
         g2d.fillRect(0, 0, canvasWidth, canvasHeight)
         g2d.drawCustomImage(weatherIcon.toBufferedImage(), canvasWidth / 2 - 230, canvasHeight / 2 - 80, 230.0, 230.0)
-        g2d.color = Color.BLACK
+        g2d.color = textColor
         g2d.font = font
         g2d.drawString("${weather.now.temp}℃", canvasWidth / 2, canvasHeight / 2 + 20)
         g2d.drawString(weather.now.text, canvasWidth / 2, canvasHeight / 2 + 100)
         g2d.font = locationFont
         g2d.drawCenteredText("${geoResult.adm1}-${geoResult.adm2}-${geoResult.name}", canvasWidth / 2, 90)
-        g2d.color = Color(155, 48, 255)
+        g2d.color = licenseColor
         g2d.drawCenteredText("数据来源: ${weather.refer.sources.joinToString(",")}", canvasWidth / 2, canvasHeight - 80)
         g2d.dispose()
         return emptyImage.toByteArray().encodeToBase64()

src/main/kotlin/cn/rtast/fancybot/commands/parse/BVParseCommand.kt

@@ -38,6 +38,9 @@ object BVParseCommand {
     private const val VIEW_COUNT_URL = "https://api.bilibili.com/x/player/online/total"
     private const val CANVAS_WIDTH = 1000
     private const val CANVAS_HEIGHT = 600
+    private val backgroundColor = Color(43, 43, 43)
+    private val upBarColor = Color(102, 102, 102)
+    private val textColor = Color.WHITE
     private val titleFont = Font("Serif", Font.ITALIC, 40)
     private val numberFont = Font("Serif", Font.ITALIC, 25)
     private val twoTwoLogo = ImageIO.read(Resources.loadFromResources("bili/22-coin.png"))
@@ -97,12 +100,12 @@ object BVParseCommand {
         val canvas = BufferedImage(CANVAS_WIDTH, CANVAS_HEIGHT, BufferedImage.TYPE_INT_RGB)
         val g2d = canvas.createGraphics()
         g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
-        g2d.color = Color(43, 43, 43)
+        g2d.color = backgroundColor
         g2d.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT)
         // draw rect
-        g2d.color = Color(102, 102, 102)
+        g2d.color = upBarColor
         g2d.fillRect(0, 0, CANVAS_WIDTH, 120)
-        g2d.color = Color.WHITE
+        g2d.color = textColor
         // draw numbers
         g2d.font = numberFont
         g2d.drawString(like, 110, 200)

src/main/kotlin/cn/rtast/fancybot/commands/parse/GitHubParseCommand.kt

@@ -40,6 +40,8 @@ object GitHubParseCommand {
     private val titleCustomFont = Font("Serif", Font.PLAIN, 75).deriveFont(Font.BOLD or Font.ITALIC)
     private val forkParentFont = Font("Serif", Font.PLAIN, 35).deriveFont(Font.ITALIC)
     private val descriptionCustomFont = Font("Serif", Font.PLAIN, 40).deriveFont(Font.BOLD or Font.ITALIC)
+    private val backgroundColor = Color.WHITE
+    private val textColor = Color(60, 60, 60)
 
     private val languageColors = mapOf(
         "Kotlin" to Color(169, 123, 255),
@@ -80,7 +82,7 @@ object GitHubParseCommand {
         val g2d = canvas.createGraphics()
         g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
         g2d.font = customFont
-        g2d.color = Color.WHITE
+        g2d.color = backgroundColor
         g2d.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT)
         g2d.color = this.getLanguageColor(repoStat.language)
         g2d.fillRect(0, CANVAS_HEIGHT - 20, CANVAS_WIDTH, 35)
@@ -88,7 +90,7 @@ object GitHubParseCommand {
         g2d.drawCustomImage(starIcon, 80, 785, 70.0, 70.0, false) // draw star icon
         g2d.drawCustomImage(issueIcon, 480, 785, 70.0, 70.0, false)  // draw issue icon
         g2d.drawCustomImage(forkIcon, 880, 780, 70.0, 70.0, false)  // draw fork icon
-        g2d.color = Color(60, 60, 60)
+        g2d.color = textColor
         g2d.drawString("Stars", 160, 840)
         g2d.drawString("Issues", 560, 840)
         g2d.drawString("Forks", 960, 840)
@@ -101,7 +103,6 @@ object GitHubParseCommand {
             val truncatedParentFullName = setTruncat("Forked from: $parentName", g2d, 1000)
             g2d.drawString(truncatedParentFullName, 80, 435)
         }
-        g2d.color = Color(60, 60, 60)
         g2d.font = titleCustomFont
         val truncatedFullNameText = setTruncat(repoStat.fullName, g2d, 1000)
         g2d.drawString(truncatedFullNameText, 80, 280)