Description
Makes a copy of the current state of cr and saves it
on an internal stack of saved states for cr. When
cairoRestore is called, cr will be restored to
the saved state. Multiple calls to cairoSave and
cairoRestore can be nested; each call to cairoRestore
restores the state from the matching paired cairoSave.Details
It isn't necessary to clear all saved states before
a Cairo is freed.