使用 sbt-native-packager 和 JDKPackager 插件自定义 Freedesktop 文件

Question

我想自定义由 javapackager 创建的 .desktop 文件作为 sbt-native-packager 的 JDKPackager 插件的一部分。它显然使用了一个模板：

[info]   Using default package resource [Menu shortcut descriptor]
         (add package/linux/Foo.desktop to the class path to customize)

特别是，我想添加 Gnome 将使用的 StartupWMClass 条目来统一我的应用程序打开的所有 windows。

Answer 1

javapackager指的是插件的目标目录，即target/jdkpackager。例如，这是在编写 javafx-ant 构建文件时创建的。所以我们可以在这里搭载：

// rewrite the task so that after the ant build is created,
// we add package/linux/MyApp.desktop
writeAntBuild in JDKPackager := {
  val res  = (writeAntBuild in JDKPackager).value
  val main = (mainClass     in JDKPackager).value
    .getOrElse(sys.error("No main class specified"))
  val tgt  = (target        in JDKPackager).value
  val n    = (name          in JDKPackager).value
  val wm   = main.replace('.', '-')
  val desktop = 
    s"""[Desktop Entry]
       |Name=APPLICATION_NAME
       |Comment=APPLICATION_SUMMARY
       |Exec=/opt/APPLICATION_FS_NAME/APPLICATION_LAUNCHER_FILENAME
       |Icon=/opt/APPLICATION_FS_NAME/APPLICATION_LAUNCHER_FILENAME.png
       |Terminal=false
       |Type=Application
       |Categories=DEPLOY_BUNDLE_CATEGORY
       |DESKTOP_MIMES
       |StartupWMClass=$wm
       |""".stripMargin
  IO.write(tgt / "package" / "linux" / s"$n.desktop", desktop)
  res
}

Answer 2

只要在Ant task XML里有相应的设置，还有一个替代方案：只需重写插件生成的XML，通过antBuildDefn，就够了。

下面是通过添加 category attribute 为 .desktop 文件指定菜单类别的示例：

antBuildDefn in JDKPackager := {
  val origTask = (antBuildDefn in JDKPackager).value

  val InfoLabel = "info"
  val KeyRegex  = s"$InfoLabel\.(.+)".r

  import scala.xml._
  import scala.xml.transform._
  val infoRewrite = new RewriteRule {
    override def transform(n: Node) = n match {
      case e: Elem if e.prefix == "fx" && e.label == InfoLabel =>
        e % Attribute("", "category", "Office", Null)
      case other => other
    }
  }

  new RuleTransformer(infoRewrite)(origTask)
}

使用 sbt-native-packager 和 JDKPackager 插件自定义 Freedesktop 文件

Customise Freedesktop file with sbt-native-packager and JDKPackager plugin

scala

sbt-native-packager