NSMenu WIP, but also caught a source of the old bug

src/net/torvald/terrarum/ui/UINSMenu.kt

@@ -0,0 +1,119 @@
+package net.torvald.terrarum.ui
+
+import com.badlogic.gdx.graphics.Camera
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import net.torvald.terrarum.*
+
+/**
+ * Nextstep-themed menu bar with mandatory title line
+ *
+ * Created by minjaesong on 2018-12-08.
+ */
+class UINSMenu(
+        var title: String = "",
+        val minimumWidth: Int,
+        treeRepresentation: Yaml,
+
+        val titleBackCol: Color = Color(0f,0f,0f,.77f),
+        val titleTextCol: Color = Color.WHITE,
+        val titleBlendMode: String = BlendMode.NORMAL
+
+) : UICanvas() {
+
+    override var openCloseTime: Second = 0f
+    val LINE_HEIGHT = 24
+    val TEXT_OFFSETX = 3f
+    val TEXT_OFFSETY = (LINE_HEIGHT - Terrarum.fontGame.lineHeight) / 2f
+    val CHILD_ARROW = "${0x2023.toChar()}"
+
+
+    val tree = treeRepresentation.parse()
+    override var width = minOf(minimumWidth, tree.getLevelData(1).map { Terrarum.fontGame.getWidth(it ?: "") }.max() ?: 0)
+    override var height = LINE_HEIGHT * (tree.children.size + 1)
+    private val treeChildrenLabels = Array<String>(tree.children.size) {
+        tree.children[it].toString() + if (tree.children[it].children.isNotEmpty()) "  $CHILD_ARROW" else ""
+    }
+
+    private val theRealList = UIItemTextButtonList(
+            this,
+            treeChildrenLabels,
+            posX + TEXT_OFFSETX.toInt(), posY + LINE_HEIGHT,
+            width - (2 * TEXT_OFFSETX.toInt()), height - LINE_HEIGHT,
+            TEXT_OFFSETY.toInt(),
+            textAreaWidth = width - (2 * TEXT_OFFSETX.toInt()),
+            alignment = UIItemTextButton.Companion.Alignment.LEFT
+    )
+
+    val selectedIndex: Int?
+        get() = theRealList.selectedIndex
+
+    override fun updateUI(delta: Float) {
+        theRealList.update(delta)
+    }
+
+    override fun renderUI(batch: SpriteBatch, camera: Camera) {
+        // draw title bar
+        batch.color = titleBackCol
+        BlendMode.resolve(titleBlendMode, batch)
+        batch.fillRect(posX.toFloat(), posY.toFloat(), width.toFloat(), LINE_HEIGHT.toFloat())
+
+        batch.color = titleTextCol
+        blendNormal(batch)
+        Terrarum.fontGame.draw(batch, title, posX + TEXT_OFFSETX, TEXT_OFFSETY)
+
+        // draw the list
+        theRealList.render(batch, camera)
+    }
+
+    override fun dispose() {
+        theRealList.dispose()
+    }
+
+    override fun doOpening(delta: Float) {
+    }
+
+    override fun doClosing(delta: Float) {
+    }
+
+    override fun endOpening(delta: Float) {
+    }
+
+    override fun endClosing(delta: Float) {
+    }
+
+    override fun mouseMoved(screenX: Int, screenY: Int): Boolean {
+        return super.mouseMoved(screenX, screenY)
+    }
+
+    override fun touchDragged(screenX: Int, screenY: Int, pointer: Int): Boolean {
+        return super.touchDragged(screenX, screenY, pointer)
+    }
+
+    override fun touchDown(screenX: Int, screenY: Int, pointer: Int, button: Int): Boolean {
+        return super.touchDown(screenX, screenY, pointer, button)
+    }
+
+    override fun touchUp(screenX: Int, screenY: Int, pointer: Int, button: Int): Boolean {
+        return super.touchUp(screenX, screenY, pointer, button)
+    }
+
+    override fun scrolled(amount: Int): Boolean {
+        return super.scrolled(amount)
+    }
+
+    override fun keyDown(keycode: Int): Boolean {
+        return super.keyDown(keycode)
+    }
+
+    override fun keyUp(keycode: Int): Boolean {
+        return super.keyUp(keycode)
+    }
+
+    override fun keyTyped(character: Char): Boolean {
+        return super.keyTyped(character)
+    }
+
+    override fun resize(width: Int, height: Int) {
+    }
+}