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Different style of avatar for groups.

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KOUNOIKE Yuusuke
2017-03-19 02:14:26 +09:00
parent 4d0e0b7bd2
commit d27b9222ba
2 changed files with 82 additions and 23 deletions
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6
src/main/scala/gitbucket/core/controller/AccountController.scala
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@@ -156,7 +156,11 @@ trait AccountControllerBase extends AccountManagementControllerBase {
RawData(FileUtil.getMimeType(image), new java.io.File(getUserUploadDir(userName), image))
}.getOrElse{
contentType = "image/png"
TextAvatarUtil.textAvatar(account.fullName).getOrElse(Thread.currentThread.getContextClassLoader.getResourceAsStream("noimage.png"))
(if (account.isGroupAccount) {
TextAvatarUtil.textGroupAvatar(account.fullName)
} else {
TextAvatarUtil.textAvatar(account.fullName)
}).getOrElse(Thread.currentThread.getContextClassLoader.getResourceAsStream("noimage.png"))
}
}.getOrElse{
NotFound()

99
src/main/scala/gitbucket/core/util/TextAvatarUtil.scala
View File

@@ -3,10 +3,22 @@ package gitbucket.core.util
import java.io.ByteArrayOutputStream
import java.awt.image.BufferedImage
import javax.imageio.ImageIO
import java.awt.{Color, Font, RenderingHints}
import java.awt.{Color, Font, Graphics2D, RenderingHints}
import java.awt.font.{FontRenderContext, TextLayout}
import java.awt.geom.AffineTransform
object TextAvatarUtil {
private val iconSize = 200
private val fontSize = 180
private val roundSize = 60
private val shadowSize = 20
private val bgSaturation = 0.68f
private val bgBlightness = 0.73f
private val shadowBlightness = 0.23f
private val font = new Font(Font.SANS_SERIF, Font.PLAIN, fontSize)
private val transparent = new Color(0, 0, 0, 0)
// https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
private def relativeLuminance(c: Color): Double = {
val rgb = Seq(c.getRed, c.getGreen, c.getBlue).map{_/255.0}.map{x => if (x <= 0.03928) x / 12.92 else math.pow((x + 0.055) / 1.055, 2.4)}
@@ -24,27 +36,37 @@ object TextAvatarUtil {
if (contrastRatio(base, c1) > contrastRatio(base, c2)) c1 else c2
}
private def textImage(w: Int, h: Int, drawText: String, font: Font, fontSize: Int, bgColor: Color, fgColor: Color): Array[Byte] = {
val canvas = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB)
val g = canvas.createGraphics()
private def strToHue(text: String): Float = {
Integer.parseInt(StringUtil.md5(text).substring(0, 2), 16) / 256f
}
g.setColor(new Color(0, 0, 0, 0))
g.fillRect(0, 0, w, h)
g.setColor(bgColor)
g.fillRoundRect(0, 0, w, h, 60, 60)
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
g.setColor(fgColor)
val context = g.getFontRenderContext
private def getCenterToDraw(drawText: String, font: Font, w: Int, h: Int): (Int, Int) = {
val context = new FontRenderContext(new AffineTransform(), true, true)
val txt = new TextLayout(drawText, font, context)
val bounds = txt.getBounds
val x: Int = ((w - bounds.getWidth) / 2 - bounds.getX).toInt
val y: Int = ((h - bounds.getHeight) / 2 - bounds.getY).toInt
(x, y)
}
private def textImage(drawText: String, bgColor: Color, fgColor: Color): Array[Byte] = {
val canvas = new BufferedImage(iconSize, iconSize, BufferedImage.TYPE_INT_ARGB)
val g = canvas.createGraphics()
val center = getCenterToDraw(drawText, font, iconSize, iconSize)
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
g.setColor(transparent)
g.fillRect(0, 0, iconSize, iconSize)
g.setColor(bgColor)
g.fillRoundRect(0, 0, iconSize, iconSize, roundSize, roundSize)
g.setColor(fgColor)
g.setFont(font)
g.drawString(drawText, x, y)
g.drawString(drawText, center._1, center._2)
g.dispose()
@@ -55,18 +77,51 @@ object TextAvatarUtil {
def textAvatar(nameText: String): Option[Array[Byte]] = {
val drawText = nameText.substring(0, 1)
val md5 = StringUtil.md5(nameText)
val hashedInt = Integer.parseInt(md5.substring(0, 2), 16)
val bgHue = hashedInt / 256f
val bgSaturation = 0.68f
val bgBlightness = 0.73f
val bgHue = strToHue(nameText)
val bgColor = Color.getHSBColor(bgHue, bgSaturation, bgBlightness)
val fgColor = goodContrastColor(bgColor, Color.BLACK, Color.WHITE)
val size = (200, 200)
val fontSize = 180
val font = new Font(Font.SANS_SERIF, Font.PLAIN, fontSize)
if (font.canDisplayUpTo(drawText) == -1) Some(textImage(size._1, size._2, drawText, font, fontSize, bgColor, fgColor)) else None
if (font.canDisplayUpTo(drawText) == -1) Some(textImage(drawText, bgColor, fgColor)) else None
}
private def textGroupImage(drawText: String, bgColor: Color, fgColor: Color, shadowColor: Color): Array[Byte] = {
val canvas = new BufferedImage(iconSize, iconSize, BufferedImage.TYPE_INT_ARGB)
val g = canvas.createGraphics()
val center = getCenterToDraw(drawText, font, iconSize - shadowSize, iconSize - shadowSize)
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
g.setColor(transparent)
g.fillRect(0, 0, iconSize, iconSize)
g.setColor(shadowColor)
g.fillRect(shadowSize, shadowSize, iconSize, iconSize)
g.setColor(bgColor)
g.fillRect(0, 0, iconSize - shadowSize, iconSize - shadowSize)
g.setColor(fgColor)
g.setFont(font)
g.drawString(drawText, center._1, center._2)
g.dispose()
val stream = new ByteArrayOutputStream
ImageIO.write(canvas, "png", stream)
stream.toByteArray
}
def textGroupAvatar(nameText: String): Option[Array[Byte]] = {
val drawText = nameText.substring(0, 1)
val bgHue = strToHue(nameText)
val bgColor = Color.getHSBColor(bgHue, bgSaturation, bgBlightness)
val fgColor = goodContrastColor(bgColor, Color.BLACK, Color.WHITE)
val shadowColor = Color.getHSBColor(bgHue, bgSaturation, shadowBlightness)
if (font.canDisplayUpTo(drawText) == -1) Some(textGroupImage(drawText, bgColor, fgColor, shadowColor)) else None
}
}