A container used for displaying the contents of a [SubViewport]. A container that displays the contents of underlying [SubViewport] child nodes. It uses the combined size of the [SubViewport]s as minimum size, unless [member stretch] is enabled. [b]Note:[/b] Changing a [SubViewportContainer]'s [member Control.scale] will cause its contents to appear distorted. To change its visual size without causing distortion, adjust the node's margins instead (if it's not already in a container). [b]Note:[/b] The [SubViewportContainer] forwards mouse-enter and mouse-exit notifications to its sub-viewports. Virtual method to be implemented by the user. If it returns [code]true[/code], the [param event] is propagated to [SubViewport] children. Propagation doesn't happen if it returns [code]false[/code]. If the function is not implemented, all events are propagated to SubViewports. If [code]true[/code], the sub-viewport will be automatically resized to the control's size. [b]Note:[/b] If [code]true[/code], this will prohibit changing [member SubViewport.size] of its children manually. Divides the sub-viewport's effective resolution by this value while preserving its scale. This can be used to speed up rendering. For example, a 1280×720 sub-viewport with [member stretch_shrink] set to [code]2[/code] will be rendered at 640×360 while occupying the same size in the container. [b]Note:[/b] [member stretch] must be [code]true[/code] for this property to work.