Hi everyone,
As you might know Gtk currently supports pan gesture with single touch
only. I want my application to support 2 - touch panning. More
Specifically,I want to keep track of 2nd finger while panning in the
process. Is there any way I achieve this ?
Thank you.
_
On Tue, 21 Mar 2017 at 21:23, S. Jacobi wrote:
> On Tue, 21 Mar 2017 20:53:04 +
> Emmanuele Bassi wrote:
>
> >
> > Also, do not store a private pointer in your instance structure, and
> > use the get_private_instance() function that the G_DEFINE_TYPE macro
> > creates for you.
> >
> So you s
On Tue, 21 Mar 2017 20:53:04 +
Emmanuele Bassi wrote:
>
> Also, do not store a private pointer in your instance structure, and
> use the get_private_instance() function that the G_DEFINE_TYPE macro
> creates for you.
>
So you say whenever I need access to the objects private data I should
c
Don't use g_type_class_add_privat(). Either use the define type with
private macro, or the define type with code macro with G_ADD_PRIVATE.
Also, do not store a private pointer in your instance structure, and use
the get_private_instance() function that the G_DEFINE_TYPE macro creates
for you.
The
Il Tue, 21 Mar 2017 17:55:31 + Tristan Van Berkom
scrisse:
> ...
> o I believe the lookups with G_TYPE_INSTANCE_GET_PRIVATE() are just
> as cheap as the pointer dereference (as it will be implemented
> using simple pointer arithmetic).
Hi Tristan,
the lookup indeed is quite expen
On Tue, 2017-03-21 at 18:27 +0100, S. Jacobi wrote:
> On Mon, 20 Mar 2017 16:01:39 +
> Tristan Van Berkom wrote:
>
> >
> >
> > Use instance private data, this will not need any priv pointer and
> > can be done with th G_DEFINE_TYPE_WITH_PRIVATE() macro, and another
> > to lookup your privat
On Mon, 20 Mar 2017 16:01:39 +
Tristan Van Berkom wrote:
>
> Use instance private data, this will not need any priv pointer and
> can be done with th G_DEFINE_TYPE_WITH_PRIVATE() macro, and another
> to lookup your private data inside your C file (under the hood, this
> uses negative instanc
Hi
If you do it using cairo you might be interested in the following function.
cairo_image_surface_get_data()
You get the pixels stored in your picture. It can be restored using memcpy()
what is actually quiet fast.
Bests,
Joël
On Tue, Mar 21, 2017 at 8:26 AM, F.Reiter wrote:
> Hallo,
> for
Hallo,
for lightning-fast, xor, rubberbanding, zooming, clipping ..
why not consider Open-GL ?
Franz
(https://github.com/gcad3d/gcad3d)
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