CmdTargetMeasurement

Queries effective measurements of a logical target.

Arguments

Field	Type	Description
targetId	u64	Logical target ID
getSize	bool	Includes size and sourceKind in the response
getWindowSize	bool	Includes windowSize in the response (when applicable)

Response

Returns CmdResultTargetMeasurement:

Field	Type	Description
success	bool	Whether command was applied successfully
message	String	Command status
size	Option	Effective target size
windowSize	Option	Associated window size (when available)
sourceKind	Option	Source of size measurement: "surface", "window-surface", or "declared"

Notes

• If targetId is not ready yet, the command returns success=true with an empty payload.
• size prioritizes observable real surface measurement (autolink/present window) before declared fallback.
• For browser targets bound to windows, surface measurement honors HiDPI when the host uses CSS sizing.