强制缩小JScrollPane中的MigLayout-Component

Question

我有一个使用MigLayout作为其LayoutManager的Component。它设置为在JScrollPane内部增长以占用整个可用宽度。因此，如果我调整appliation框架的大小，则JScrollPane与框架一样宽，内部组件也是如此。

但是，当我缩小框架时，JScrollPane内部生长的组件只保持其宽度而不缩小，因此会显示水平滚动条。

我知道JScrollpane needs to shrink its width并使用getScrollableTracksViewportWidth = true实现了Scrollable-Interface，但MigLayout似乎并不尊重它。

有什么建议吗？感谢

Answer 1

我用以下scala-snippet解决了它。 Scala的Scrollable只是一个假的包装器，你应该实现Java-Scrollable ......

import javax.swing.JPanel
import javax.swing.{Scrollable => JScrollable}
import javax.swing.BoxLayout
import java.awt.Dimension
import java.awt.Rectangle
import scala.swing.SequentialContainer
import scala.swing.Orientation
import scala.swing.Scrollable
import scala.swing.Panel

class ScrollablePanel extends Panel with SequentialContainer.Wrapper with Scrollable.Wrapper {

  var scrollIncrement: Int = 10
  var blockScrollIncrement: Int = 50

  val allowVerticalScrolling: Boolean   = true
  val allowHorizontalScrolling: Boolean = false

  override lazy val peer = new JPanel with SuperMixin with JScrollable {
    def getPreferredScrollableViewportSize: Dimension =
      getPreferredSize

    def getScrollableTracksViewportHeight: Boolean =
      !allowVerticalScrolling

    def getScrollableTracksViewportWidth: Boolean =
      !allowHorizontalScrolling

    def getScrollableBlockIncrement(visibleRect: Rectangle, orientation: Int, direction: Int): Int =
      scrollIncrement

    def getScrollableUnitIncrement(visibleRect: Rectangle, orientation: Int, direction: Int): Int =
      blockScrollIncrement
  }

  final protected def scrollablePeer: JScrollable = peer
}