103 lines
2.4 KiB
GDScript
103 lines
2.4 KiB
GDScript
@tool
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extends PanelContainer
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class_name StateDropArea
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signal node_dropped(node: Node)
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@export var icon_path: NodePath = NodePath("TextureRect")
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const COLOR_IDLE: Color = Color(1, 1, 1, 1.0)
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const COLOR_CAN_DROP: Color = Color(0.4, 0.7, 1.0, 1.0)
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const COLOR_CANNOT_DROP: Color = Color(1.0, 0.35, 0.35, 1.0)
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const COLOR_CHECKED: Color = Color.GREEN
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## 設置Locker的時候自更新一次State
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var vaild: bool = false:
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set(value):
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_set_state(3)
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vaild = value
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var _icon: TextureRect
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var _state := 0 # 0 idle, 1 can, 2 cannot
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var _current_drag_data: Variant = null
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signal node_path_dropped(node_path: NodePath)
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signal state_change(state: int)
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# =====================================================
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# Life cycle
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# =====================================================
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func _ready() -> void:
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_icon = get_node_or_null(icon_path) as TextureRect
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mouse_filter = Control.MOUSE_FILTER_PASS
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_ignore_mouse_recursive(self)
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if _icon:
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_icon.modulate = COLOR_IDLE
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if custom_minimum_size == Vector2.ZERO:
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custom_minimum_size = Vector2(32, 32)
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#mouse_entered.connect(_on_mouse_entered)
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mouse_exited.connect(_on_mouse_exited)
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# =====================================================
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# Drag & Drop
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# =====================================================
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func _can_drop_data(_pos: Vector2, data) -> bool:
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_current_drag_data = data
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var r = StateResolveUtils.is_valid_state_drag(data)
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_set_state(1 if r else 2)
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return r
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func _drop_data(_pos: Vector2, data) -> void:
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var path := StateResolveUtils.get_state_path_from_drag(data)
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if path.is_empty():
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return
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node_path_dropped.emit(path)
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func _notification(what: int) -> void:
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if what == NOTIFICATION_DRAG_END:
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_current_drag_data = null
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_set_state(0)
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# =====================================================
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# Mouse events
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# =====================================================
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func _on_mouse_exited() -> void:
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_set_state(0)
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func _ignore_mouse_recursive(n: Node) -> void:
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for c in n.get_children():
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if c is Control:
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(c as Control).mouse_filter = Control.MOUSE_FILTER_IGNORE
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_ignore_mouse_recursive(c)
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func _set_state(s: int) -> void:
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if s == _state:
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return
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_state = s
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if _icon == null:
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return
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match _state:
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0:
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if vaild:
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_set_state(3)
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return
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_icon.modulate = COLOR_IDLE
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1:
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_icon.modulate = COLOR_CAN_DROP
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2:
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_icon.modulate = COLOR_CANNOT_DROP
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3:
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_icon.modulate = COLOR_CHECKED
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state_change.emit(_state)
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