Initial commit, layout mockup

addons/dockable_container/layout_split.gd

@@ -0,0 +1,100 @@
+@tool
+class_name DockableLayoutSplit
+extends DockableLayoutNode
+## DockableLayout binary tree nodes, defining subtrees and leaf panels
+
+enum Direction { HORIZONTAL, VERTICAL }
+
+@export var direction := Direction.HORIZONTAL:
+	get:
+		return get_direction()
+	set(value):
+		set_direction(value)
+@export_range(0, 1) var percent := 0.5:
+	get = get_percent,
+	set = set_percent
+@export var first: DockableLayoutNode = DockableLayoutPanel.new():
+	get:
+		return get_first()
+	set(value):
+		set_first(value)
+@export var second: DockableLayoutNode = DockableLayoutPanel.new():
+	get:
+		return get_second()
+	set(value):
+		set_second(value)
+
+var _direction := Direction.HORIZONTAL
+var _percent := 0.5
+var _first: DockableLayoutNode
+var _second: DockableLayoutNode
+
+
+func _init() -> void:
+	resource_name = "Split"
+
+
+func set_first(value: DockableLayoutNode) -> void:
+	if value == null:
+		_first = DockableLayoutPanel.new()
+	else:
+		_first = value
+	_first.parent = self
+	emit_tree_changed()
+
+
+func get_first() -> DockableLayoutNode:
+	return _first
+
+
+func set_second(value: DockableLayoutNode) -> void:
+	if value == null:
+		_second = DockableLayoutPanel.new()
+	else:
+		_second = value
+	_second.parent = self
+	emit_tree_changed()
+
+
+func get_second() -> DockableLayoutNode:
+	return _second
+
+
+func set_direction(value: Direction) -> void:
+	if value != _direction:
+		_direction = value
+		emit_tree_changed()
+
+
+func get_direction() -> Direction:
+	return _direction
+
+
+func set_percent(value: float) -> void:
+	var clamped_value := clampf(value, 0, 1)
+	if not is_equal_approx(_percent, clamped_value):
+		_percent = clamped_value
+		emit_tree_changed()
+
+
+func get_percent() -> float:
+	return _percent
+
+
+func get_names() -> PackedStringArray:
+	var names := _first.get_names()
+	names.append_array(_second.get_names())
+	return names
+
+
+## Returns whether there are any nodes
+func is_empty() -> bool:
+	return _first.is_empty() and _second.is_empty()
+
+
+func is_horizontal() -> bool:
+	return _direction == Direction.HORIZONTAL
+
+
+func is_vertical() -> bool:
+	return _direction == Direction.VERTICAL