44 lines
1.3 KiB
GDScript
44 lines
1.3 KiB
GDScript
class_name AnnotateCanvasCaptureViewport
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extends SubViewport
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##
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## Class responsible for saving an image version of a AnnotateCanvas node to disk.
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##
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var _first_process := true
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var _file_location: String
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## Construct a AnnotateCanvasCaptureViewport node. [br]
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## [param AnnotateCanvas]: AnnotateCanvas which should be saved as an image to disk.
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## [param file]: Filename the image will be stored under.
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## [param scale]: What the resolution of the image should be scaled by.
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func _init(canvas: AnnotateCanvas, file: String, scale: float = 1.0):
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canvas = canvas.duplicate()
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_file_location = file
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var canvas_area := canvas.get_canvas_area()
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# viewports render anything from (0, 0) to (width, height),
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# so we want to offset the canvas contents to make sure they fit inside this area.
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canvas.position = -canvas_area.position * scale
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canvas.scale *= scale
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canvas_area.position = Vector2.ZERO
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add_child(canvas)
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size = canvas_area.size * scale
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render_target_update_mode = SubViewport.UPDATE_ALWAYS
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transparent_bg = true
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func _process(_delta):
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if _first_process:
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# allow viewport to update itself before capturing
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_first_process = false
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return
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get_texture().get_image().save_png(_file_location)
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# make sure new image file is visible in the editor filesystem
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GodotAnnotate.editor_interface.get_resource_filesystem().scan()
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queue_free()
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