Re: gtk3 replacement for gdk_pixmap_foreign_new

[salsaman <salsaman gmail com>]

I hope you all see now. This is exactly what I mean.

You are removing functionality with no thought as to what will replace it.

And when developers ask about it, they are met with silence.

That is not the way to maintain a good developer community.



Regards,
Salsaman.
main developer, LiVES.

http://lives.sourceforge.net
https://www.ohloh.net/accounts/salsaman



On Wed, Jan 18, 2012 at 17:23, salsaman <salsaman gmail com> wrote:
> Also, I have replaced the following code:
>
>    GdkPixmap *pixmap = NULL;
>    gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, NULL, 0);
>    if(pixmap) {
>      cairo_t *cairo;
>      cairo = gdk_cairo_create(pixmap);
>      if(cairo) {
>        PangoLayout *layout;
>        layout = pango_cairo_create_layout(cairo);
>
> ....// do layout stuff
>
>        pango_cairo_show_layout(cairo, layout);
>          pixbuf_new = gdk_pixbuf_get_from_drawable(pixbuf, pixmap, NULL,\
>              0, 0,\
>              0, 0,\
>              -1, -1);
>
>
>
> which works, with:
>
>
>      cairo_t *cairo;
>      cairo_surface_t *surf;
>      PangoLayout *layout;
>
>      if (palette==WEED_PALETTE_BGR24||palette==WEED_PALETTE_RGB24)
>        surf=cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height);
>      else
>        surf=cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
>      cairo=cairo_create(surf);
>      gdk_cairo_set_source_pixbuf(cairo,pixbuf,0,0);
>      layout = pango_cairo_create_layout(cairo);
>
> ...
>
>        pango_cairo_show_layout(cairo, layout);
>        cairo_paint(cairo);
>
>
> which no longer paints any text on the pixbuf. Any suggestions ?
>
> Regards,
> Salsaman.
>
>
> http://lives.sourceforge.net
> https://www.ohloh.net/accounts/salsaman
>
>
>
> On Wed, Jan 18, 2012 at 14:00, salsaman <salsaman gmail com> wrote:
>> OK, here is what I discovered in replacing this code.
>>
>> gdk_pixbuf_get_from_window() should work as a replacement (actually I
>> was using gdk_pixmap_get_from_drawable() before). However there may be
>> a problem with colormaps (I have not been able to test this yet, but
>> see below).
>>
>> With gtk+ 2.x a colormap is required for
>> gdk_pixmap_get_from_drawable(), and the documentation says for screen
>> captures it is OK to use the default colormap for the screen. This is
>> in fact no longer the case !!! With Compiz, you need to create a 32
>> bit colormap (whereas the screen default is 24 bit). I have to use
>> gdk_visual_get_best_with_depth( depth_of_window ) followed by
>> gdk_x11_colormap_get_xcolormap() and gdk_x11_colormap_foreign_new().
>> depth_of_window is taken from the Xwindow and is 32 for Compiz.
>>
>> - So therefore, I hope this is taken into consideration and something
>> similar done in the new function gdk_pixbuf_get_from_window() which
>> does not take a colormap parameter.
>>
>>
>> The other thing I noticed, gtk_socket_add_id() no longer seems to
>> work. Before it was kind of flakey...it didnt always work, and for
>> some reason it needed to be called twice in succession for it to work
>> at all. Now it does not work at all. However this is probably an X
>> Window issue, as trying to reparent a foreign window into a normal gdk
>> window seems not to work either. perhaps somebody could look into
>> that. However there seems to be another bug in gtk_socket_add_id() as
>> I get errors about the GtkSocket not being a GObject, and even being
>> mistaken for a PangoLayout object !
>>
>>
>>
>>
>> Regards,
>> Salsaman.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> http://lives.sourceforge.net
>> https://www.ohloh.net/accounts/salsaman
>>
>>
>>
>> On Fri, Jan 6, 2012 at 09:51, Olav Vitters <olav vitters nl> wrote:
>>> On Fri, Jan 06, 2012 at 12:51:32PM +0100, richard boaz wrote:
>>>> i have been caught by this in the past as well: that documentation related
>>>> to deprecated functions is woefully lacking.  it is emminently unhelpful to
>>>> simply state "stop using this call".
>>>
>>> File bugs.
>>>
>>> --
>>> Regards,
>>> Olav
>>> _______________________________________________
>>> gtk-list mailing list
>>> gtk-list gnome org
>>> http://mail.gnome.org/mailman/listinfo/gtk-list