EditablePanel.isObstructing

Fixes #127

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/EditablePanel.kt

@@ -440,6 +440,10 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 	}
 
 	fun calculateAbsoluteRectangle(): Rect2f {
+		if (scissor) {
+			return Rect2f(absoluteX, absoluteY, width, height)
+		}
+
 		val x = if (childrenRectX < 0) childrenRectX + absoluteX else absoluteX
 		val y = if (childrenRectY < 0) childrenRectY + absoluteY else absoluteY
 		val width = if (childrenRectWidth > width) childrenRectWidth else width
@@ -449,6 +453,10 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 	}
 
 	fun calculateAbsoluteRectangles(): List<Rect2f> {
+		if (scissor) {
+			return listOf(Rect2f(absoluteX, absoluteY, width, height))
+		}
+
 		if (childrenRectX >= 0 && childrenRectY >= 0 && childrenRectWidth <= width && childrenRectHeight <= height) {
 			return listOf(Rect2f(absoluteX, absoluteY, width, height))
 		}
@@ -465,6 +473,41 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 		return result
 	}
 
+	/**
+	 * Whenever [calculateAbsoluteObstructingRectangle] and [calculateAbsoluteObstructingRectangles] treat
+	 * *this* panel visible. Does not affect children.
+	 */
+	var isObstructing = true
+		protected set
+
+	fun calculateAbsoluteObstructingRectangle(): Rect2f {
+		if (!isObstructing) {
+			return Rect2f(childrenRectX + absoluteX, childrenRectY + absoluteY, childrenRectWidth, childrenRectHeight)
+		}
+
+		return calculateAbsoluteRectangle()
+	}
+
+	fun calculateAbsoluteObstructingRectangles(): List<Rect2f> {
+		if (childrenRectX >= 0 && childrenRectY >= 0 && childrenRectWidth <= width && childrenRectHeight <= height && isObstructing) {
+			return listOf(Rect2f(absoluteX, absoluteY, width, height))
+		}
+
+		val result = ArrayList<Rect2f>()
+
+		if (isObstructing) {
+			result.add(Rect2f(absoluteX, absoluteY, width, height))
+		}
+
+		for (children in children) {
+			if ((children.isOutsideOfParent || !isObstructing) && children.isVisible()) {
+				result.addAll(children.calculateAbsoluteObstructingRectangles())
+			}
+		}
+
+		return result
+	}
+
 	// Абсолютная координата, обновляется на отрисовке
 	var absoluteX = 0f
 		private set

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/EffectListPanel.kt

@@ -32,7 +32,11 @@ open class EffectListPanel<out S : Screen> @JvmOverloads constructor(
 	gridWidth: Int = 2,
 	gridHeight: Int = 2,
 ) : EditablePanel<S>(screen, parent, x, y, gridWidth * (SQUARE_THIN.width + 2f), gridHeight * (SQUARE_THIN.height + 2f)) {
-	val scroll: DiscreteScrollBarPanel<out S> = DiscreteScrollBarPanel(screen, this, this::calculateMaxScroll, this::onScrolled, height = height)
+	val scroll: DiscreteScrollBarPanel<S> = DiscreteScrollBarPanel(screen, this, this::calculateMaxScroll, this::onScrolled, height = height)
+
+	init {
+		isObstructing = false
+	}
 
 	var alignOnRight = true
 
@@ -170,6 +174,10 @@ open class EffectListPanel<out S : Screen> @JvmOverloads constructor(
 	}
 
 	val canvas = object : EditablePanel<S>(screen, this@EffectListPanel, 0f, 0f, width, height) {
+		init {
+			isObstructing = false
+		}
+
 		override fun performLayout() {
 			super.performLayout()
 

src/main/kotlin/ru/dbotthepony/mc/otm/compat/jei/JEIPlugin.kt

@@ -217,7 +217,15 @@ class JEIPlugin : IModPlugin {
 	override fun registerGuiHandlers(registration: IGuiHandlerRegistration) {
 		registration.addGenericGuiContainerHandler(MatteryScreen::class.java, object : IGuiContainerHandler<MatteryScreen<*>> {
 			override fun getGuiExtraAreas(containerScreen: MatteryScreen<*>): MutableList<Rect2i> {
-				return containerScreen.panelsView.stream().map { it.performLayoutIfNeeded(); it.updateAbsoluteCoordinates(); it.calculateAbsoluteRectangles() }.flatMap { it.stream() }.map { it.toIntRect() }.collect(Collectors.toList())
+				return containerScreen.panelsView.stream()
+					.map {
+						it.performLayoutIfNeeded()
+						it.updateAbsoluteCoordinates()
+						it.calculateAbsoluteObstructingRectangles()
+					}
+					.flatMap { it.stream() }
+					.map { it.toIntRect() }
+					.collect(Collectors.toList())
 			}
 
 			override fun getIngredientUnderMouse(