CairoExtents (gb.cairo)
This class represents an extents bounding box, as returned by properties like 
Cairo.ClipExtents or 
Cairo.FillExtents.
This class is creatable.
Properties
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X1  
 | 
Returns the left of the resulting extents.
 | 
| 
X2  
 | 
Returns the right of the resulting extents.
 | 
| 
Y1  
 | 
Returns the top of the resulting extents.
 | 
| 
Y2  
 | 
Returns the bottom of the resulting extents.
 | 
Methods
| 
Merge  
 | 
Merges the specified extents into the current one and returns it.
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