73 lines
2.1 KiB
GDScript3
73 lines
2.1 KiB
GDScript3
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class_name Draggable
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extends Area2D
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## Base class for draggable UI elements (Cards and StickyNotes)
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## Provides common dragging behavior and boundary protection
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var is_dragged: bool = false:
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set(dragged):
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is_dragged = dragged
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z_index = int(dragged)
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## Margin from screen edges when confining to screen bounds
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@export var screen_margin: float = 50.0
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## Confines this draggable element to stay within screen or container bounds
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## Skip this check if a sticky note is attached to a card
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func confine_to_screen() -> void:
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# Skip if this is a sticky note attached to a card
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if self is StickyNote:
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var sticky := self as StickyNote
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if sticky.attached_to is Card:
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return
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# Try to get bounds from parent container
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var bounds := _get_container_bounds()
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# If no container bounds, use viewport/screen bounds
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if bounds == Rect2():
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bounds = _get_viewport_bounds()
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# If we have valid bounds, clamp position
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if bounds != Rect2():
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position.x = clampf(position.x, bounds.position.x, bounds.position.x + bounds.size.x)
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position.y = clampf(position.y, bounds.position.y, bounds.position.y + bounds.size.y)
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## Gets the bounds of the parent container if it exists and is a Control node
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func _get_container_bounds() -> Rect2:
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var parent := get_parent()
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# Check if parent is a Control node with a defined rect
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if parent is Control:
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var control := parent as Control
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# Return the usable area with margins
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return Rect2(
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screen_margin,
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screen_margin,
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control.size.x - screen_margin * 2,
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control.size.y - screen_margin * 2
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)
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# Check if parent is a Node2D with defined boundaries
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# (for future support of non-Control containers)
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if parent is Node2D:
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# For now, return empty rect - could be extended in the future
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# to check for custom boundary properties
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pass
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return Rect2()
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## Gets the viewport bounds as fallback
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func _get_viewport_bounds() -> Rect2:
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var viewport := get_viewport()
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if viewport:
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var viewport_size := viewport.get_visible_rect().size
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return Rect2(
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screen_margin,
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screen_margin,
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viewport_size.x - screen_margin * 2,
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viewport_size.y - screen_margin * 2
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)
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return Rect2()
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