[PD-dev] struct _canvasenvironment

[Jonathan Wilkes]

--- On Thu, 7/14/11, Miller Puckette <msp at ucsd.edu> wrote:

> From: Miller Puckette <msp at ucsd.edu>
> Subject: Re: [PD-dev] struct _canvasenvironment
> To: "Jonathan Wilkes" <jancsika at yahoo.com>
> Cc: pd-dev at iem.at, "IOhannes m zmoelnig" <zmoelnig at iem.at>
> Date: Thursday, July 14, 2011, 2:08 AM
> It's in m_pd.h - that's a pretty good
> guarantee of stability (although
> not 100% perfect I'm afraid.)

Oh, thanks.  I should have looked there first.

> 
> One caution -- if soneone 'saves' the patch into a new
> directory, the
> canvas's directory will then change -- so it's best not to
> store the
> result of canvas_settid() but to call it each time it gets
> used.

Did you mean canvas_getdir?  If that's the case I think I'm safe, since I'm only using it if the canvas in question is an abstraction.  (And it's an absolute path.)  I don't think this would lead to any problems.

Also, in the canvas "get" method patch I put on the tracker it just calls canvas_getdir and returns the result.

-Jonathan

> 
> cheers
> Miller
> 
> On Wed, Jul 13, 2011 at 01:46:06PM -0700, Jonathan Wilkes
> wrote:
> > 
> > 
> > --- On Wed, 7/13/11, IOhannes m zmoelnig <zmoelnig at iem.at>
> wrote:
> > 
> > > From: IOhannes m zmoelnig <zmoelnig at iem.at>
> > > Subject: Re: [PD-dev] struct _canvasenvironment
> > > To: pd-dev at iem.at
> > > Date: Wednesday, July 13, 2011, 8:31 PM
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > > 
> > > On 2011-07-13 20:11, Jonathan Wilkes wrote:
> > > > Hello,
> > > >      Why is "struct _canvasenvironment"
> > > in g_canvas.c instead of g_canvas.h?  I want to
> take a
> > > t_object inside g_text.c and-- if it's an
> abstraction-- get
> > > its name and dir.  I can get the name but cannot
> get
> > > the dir because "struct _canvasenvironment" isn't
> in
> > > g_canvas.h.  Would it break things if it were
> moved
> > > there?
> > > > 
> > > 
> > > maybe because it is considered an opaque type?
> > > 
> > > it's a way of telling you: "t_canvasenvironment
> is private
> > > property, do
> > > not trespass".
> > > you don't have right of ways and if the next time
> you drop
> > > by, the owner
> > > decided to change everything, you are not
> supposed to
> > > complain.
> > > 
> > 
> > Oops, I overlooked canvas_getdir.  But am I not
> supposed to "trespass" into this function since it's not in
> g_canvas.h?
> > 
> > > mfgasdfr
> > > IOhannes
> > > -----BEGIN PGP SIGNATURE-----
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> > > 
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> > > 
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