59 lines
2.1 KiB
GDScript
59 lines
2.1 KiB
GDScript
extends Node
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# 统一处理 UI 的 Esc 退出。可关闭界面加入 whaletown_escape_dismissible 分组，
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# 并实现 is_escape_dismissible / get_escape_priority / request_escape_close。
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const ESCAPE_DISMISSIBLE_GROUP: StringName = &"whaletown_escape_dismissible"
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func _ready() -> void:
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# 公告、排行榜等界面会暂停场景树，Esc 仍必须有效。
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process_mode = Node.PROCESS_MODE_ALWAYS
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func _input(event: InputEvent) -> void:
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if not (event is InputEventKey):
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return
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var key_event: InputEventKey = event as InputEventKey
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if not key_event.pressed or key_event.echo or key_event.keycode != KEY_ESCAPE:
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return
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if _hide_open_popup_menu() or _close_topmost_dismissible() or _release_control_focus():
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get_viewport().set_input_as_handled()
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func _hide_open_popup_menu() -> bool:
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var popup_nodes: Array[Node] = get_tree().root.find_children("*", "PopupMenu", true, false)
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for popup_node: Node in popup_nodes:
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var popup: PopupMenu = popup_node as PopupMenu
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if popup != null and popup.visible:
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popup.hide()
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return true
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return false
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func _close_topmost_dismissible() -> bool:
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var target: Node = null
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var target_priority: int = -2147483648
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var dismissibles: Array[Node] = get_tree().get_nodes_in_group(ESCAPE_DISMISSIBLE_GROUP)
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for dismissible: Node in dismissibles:
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if not is_instance_valid(dismissible):
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continue
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if not dismissible.has_method("is_escape_dismissible") or not dismissible.has_method("request_escape_close"):
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continue
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var is_dismissible_variant: Variant = dismissible.call("is_escape_dismissible")
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if not bool(is_dismissible_variant):
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continue
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var priority: int = 0
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if dismissible.has_method("get_escape_priority"):
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var priority_variant: Variant = dismissible.call("get_escape_priority")
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priority = int(priority_variant)
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if target == null or priority > target_priority:
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target = dismissible
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target_priority = priority
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if target == null:
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return false
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target.call("request_escape_close")
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return true
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func _release_control_focus() -> bool:
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var focus_owner: Control = get_viewport().gui_get_focus_owner()
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if focus_owner == null:
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return false
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focus_owner.release_focus()
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return true
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