Merge branch '1.21' into new-container-api

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

@@ -82,6 +82,10 @@ data class DockProperty(val left: Float = 0f, val top: Float = 0f, val right: Fl
 
 	companion object {
 		val EMPTY = DockProperty()
+
+		fun all(value: Float): DockProperty {
+			return DockProperty(value, value, value, value)
+		}
 	}
 }
 

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

@@ -7,6 +7,7 @@ import ru.dbotthepony.mc.otm.client.screen.panels.EditablePanel
 import ru.dbotthepony.mc.otm.client.screen.panels.slot.AbstractSlotPanel
 import ru.dbotthepony.mc.otm.core.collect.filter
 import ru.dbotthepony.mc.otm.core.collect.maybe
+import kotlin.math.max
 
 open class GridPanel<out S : Screen>(
 	screen: S,
@@ -20,22 +21,111 @@ open class GridPanel<out S : Screen>(
 ) : EditablePanel<S>(screen, parent, x, y, width, height) {
 	var columns: Int = columns
 		set(value) {
-			field = value
-			invalidateLayout()
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
 		}
 
 	var rows: Int = rows
 		set(value) {
-			field = value
-			invalidateLayout()
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
 		}
 
 	var gravity: RenderGravity = RenderGravity.CENTER_CENTER
 		set(value) {
-			field = value
-			invalidateLayout()
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
 		}
 
+	var layout: Layout = Layout.TOP_LEFT
+		set(value) {
+			if (field != value) {
+				field = value
+				invalidateLayout()
+			}
+		}
+
+	enum class Layout {
+		TOP_LEFT {
+			override fun rows(last: Int): IntIterator {
+				return (0 until last).iterator()
+			}
+
+			override fun columns(last: Int): IntIterator {
+				return (0 until last).iterator()
+			}
+		},
+
+		TOP_RIGHT {
+			override fun rows(last: Int): IntIterator {
+				return (0 until last).iterator()
+			}
+
+			override fun columns(last: Int): IntIterator {
+				return (last - 1 downTo 1).iterator()
+			}
+		},
+		BOTTOM_LEFT {
+			override fun rows(last: Int): IntIterator {
+				return (last - 1 downTo 1).iterator()
+			}
+
+			override fun columns(last: Int): IntIterator {
+				return (0 until last).iterator()
+			}
+		},
+
+		BOTTOM_RIGHT {
+			override fun rows(last: Int): IntIterator {
+				return (last - 1 downTo 1).iterator()
+			}
+
+			override fun columns(last: Int): IntIterator {
+				return (last - 1 downTo 1).iterator()
+			}
+		};
+
+		abstract fun rows(last: Int): IntIterator
+		abstract fun columns(last: Int): IntIterator
+	}
+
+	override fun sizeToContents() {
+		if (visibleChildren.isEmpty()) {
+			// nothing to size against
+			return
+		}
+
+		visibleChildren.forEach { it.sizeToContents() }
+
+		var width = 0f
+		var height = 0f
+
+		val children = visibleChildren.iterator().filter { it.dock == Dock.NONE }
+
+		for (row in layout.rows(rows)) {
+			var maxHeight = 0f
+			var rowWidth = 0f
+
+			for (column in layout.columns(columns)) {
+				val nextChild = children.maybe() ?: break
+				rowWidth += nextChild.width + nextChild.dockMargin.horizontal
+				maxHeight = max(maxHeight, nextChild.height + nextChild.dockMargin.vertical)
+			}
+
+			height += maxHeight
+			width = max(width, rowWidth)
+		}
+
+		this.width = width
+		this.height = height
+	}
+
 	override fun performLayout() {
 		super.performLayout()
 		var children = visibleChildren.iterator().filter { it.dock == Dock.NONE }
@@ -43,11 +133,11 @@ open class GridPanel<out S : Screen>(
 		var totalWidth = 0f
 		var totalHeight = 0f
 
-		for (row in 0 until rows) {
+		for (row in layout.rows(rows)) {
 			var maxHeight = 0f
 			var width = 0f
 
-			for (column in 0 until columns) {
+			for (column in layout.columns(columns)) {
 				val child = children.maybe() ?: break
 				width += child.dockedWidth
 				maxHeight = maxHeight.coerceAtLeast(child.dockedHeight)
@@ -64,11 +154,11 @@ open class GridPanel<out S : Screen>(
 		totalWidth = 0f
 		totalHeight = 0f
 
-		for (row in 0 until rows) {
+		for (row in layout.rows(rows)) {
 			var maxHeight = 0f
 			var width = 0f
 
-			for (column in 0 until columns) {
+			for (column in layout.columns(columns)) {
 				val child = children.maybe() ?: break
 				child.x = alignX + width
 				child.y = alignY + totalHeight