[Graphics] Formalize bounding box

[Michael Goffioul]

src/ChangeLog

2008-02-05  Michael Goffioul <address@hidden>

    * graphics.h.in (base_properties::get_boundingbox): New method.
    (figure::properties::get_boundingbox): Overload method.
    (axes::properties::get_boundingbox): Likewise.
    * graphics.cc (figure::properties::get_boundingbox): Return a
    left-to-right/top-to-bottom bounding box rectangle.
    (axes::properties::get_boundingbox): Likewise. The internal
    flag defines whether position or outerposition is used.
    (axes::properties::update_camera): Remove backend access and
    use the new axes bounding box.

graphics_bb.diff
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