ocelot-desktop/src/main/scala/ocelot/desktop/ui/window/BasicWindow.scala

package ocelot.desktop.ui.window

import ocelot.desktop.ui.event.CloseWindowEvent
import ocelot.desktop.util.animation.ValueAnimation

trait BasicWindow extends Window {
  private val state = new ValueAnimation()

  override def show(): Unit = {
    super.show()
    state.goto(1)
  }

  override def hide(): Unit = {
    super.hide()
    state.goto(0)
  }

  override def focus(): Unit = {
    super.focus()
    state.goto(1)
  }

  override def unfocus(): Unit = {
    super.focus()
    state.goto(0.2f)
  }

  protected def backgroundAlpha: Float = state.value

  protected def shadowAlpha: Float = state.value * 0.5f

  override def update(): Unit = {
    super.update()
    state.update()

    if (state.value == 0) {
      parent.foreach(_.handleEvent(CloseWindowEvent(this)))
    }
  }
}