makePlaceholder
Returns a placeholder Picture. Result does not draw, and contains only cull Rect, a hint of its bounds. Result is immutable; it cannot be changed later. Result identifier is unique.
Returned placeholder can be intercepted during playback to insert other commands into Canvas draw stream.
Return
placeholder with unique identifier
Parameters
placeholder dimensions
See also
Returns a placeholder Picture. Result does not draw, and contains only cull Rect, a hint of its bounds. Result is immutable; it cannot be changed later. Result identifier is unique.
Returned placeholder can be intercepted during playback to insert other commands into Canvas draw stream.
Return
placeholder with unique identifier
Parameters
placeholder left coordinate
placeholder top coordinate
placeholder right coordinate
placeholder bottom coordinate