Re: Comparing gs-mag dbus with g-mag dbus

[Joseph Scheuhammer <clown idi gmail com>]

 On 05/08/10 3:45 PM, Fernando Herrera wrote:
> Hi Joseph, and thanks for this work!

No problem.  Glad it's useful.

> > shiftContentsTo():
> > { name: 'shiftContentsTo', inSignature: 'ii', outSignature: 'b' },
> > Changes to gs-mag dbus:
> > No change, but *needs to be added to gnome-mag*.
> What should this function do?
It's sort of the reverse of setRoi().  For setRoi(), the client passes a 
rectangle in screen coordinates that defines the region on the desktop 
to magnify, and the magnifier places that rectangle in the magnified 
view.  shiftContentsTo() takes a coordinate that is the centre of the 
region-of-interest.   The magnifier shifts the contents in the magnified 
view such that the given point is now centred within it.  As a 
consequence, the (left, top, width, height) of the magnified view is the 
new roi.  Note that the actual roi is not calculated, it simply follows 
from the size of the magnified viewport.

--
;;;;joseph

'Clown control to Mao Tse Tung.'
 - D. Bowie (misheard lyric) -