get_requested_area_for_width
Description:
[ Version ( since = "2.0.1" ) ]
public abstract bool get_requested_area_for_width (Context cr, double width, CanvasBounds requested_area)
public abstract bool get_requested_area_for_width (Context cr, double width, CanvasBounds requested_area)
This function is only intended to be used when implementing new canvas items, specifically layout items such as CanvasTable.
It gets the requested area of a child item, assuming it is allocated the given width. This is useful for text items whose requested height may change depending on the allocated width.
Parameters:
| this |
a CanvasItem. |
| cr |
a cairo context. |
| width |
the allocated width. |
| requested_area |
a CanvasBounds to return the requested area in, in the parent's coordinate space. If false is returned, this is undefined. |
Returns:
|
true if the item's requested area changes due to the new allocated width. |