How to Press and Drag to Reposition a Window in Godot

Ever wanted to create a floating window that stayed on the desktop or phone screen, but could be moved around by pressing and holding? While the process is similar to clicking and dragging a 2D texture, the process is a little different. (Example written for Godot 4.3 RC3 and later.)

A coin rendered in a floating window.

1. Set Enable Long Click Press As Right Click to True in the Project Settings. (Project Menu -> Project Settings... -> General Tab -> Input Devices -> Pointing)
2. Create a Window node.
3. Set Borderless to True. (Inspector -> Flags)
4. Set Transparent to True. (Inspector -> Flags)
5. Add the following code to your script:

extends Window
var is_dragging = false
var mouse_offset


func _input(event: InputEvent) -> void:
    if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_RIGHT:
        if event.is_pressed():
            if get_visible_rect().has_point(event.position):
                is_dragging = true
                mouse_offset = event.position
        else:
            is_dragging = false
    if event is InputEventMouseMotion and is_dragging:
        position += Vector2i(event.position - mouse_offset)

That's all there is to it! You can now right-click and drag to move the window on any OS, or long press and then drag, just like you would an app on Android!

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