Re: Gdk PixbufAnimation supported formats
On Thu, 2013-04-18 at 02:08 -0700, Andrew Potter wrote: > You can make a few png or jpg frames and hook up a g_timeout_add() callback > to set the pixbuf on a GtkImage. I done similar when I needed to dynamically > scale animated gifs. Be sure to stop your timeout on unmap()/unrealize(), > especially if you have more than a handful of animated images instantiated > anywhere. Thanks Andrew. Advice well taken and I'll be sure to consider giving that a try. -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Gdk PixbufAnimation supported formats
On Thu, 2013-04-18 at 10:22 +0200, Nicola Fontana wrote: > Hi Kip, > > my best suggestion is not to use animations: I hate moving things in > apps and I'm pretty sure I'm not alone. Hey Nicola. I hear you and I'm sure a lot of people agree. In this case, it's a user interface consideration that I think would add some simple eye candy that an end user without your level of experience and preferences might appreciate. Many other platform desktop environments, e.g. w32 and OS X display simple animations in the shell while transferring files, burning a disc, or what have you, and in many cases, users of such environments form a sizable component of my target demographics so I need to be mindful of them too. > Given that, years ago I used a GTK+2 burning front-end [1] that > integrated a libmng [2] animation while burning. It is coded in C > though. Yes, that's a good example. Sadly I'm using PyGI in a runtime environment that can depend on nothing other than the stock runtimes that come preloaded on the most common distros. > Keep in mind IMO the PNG animation status is moribund. I agree and believe that MNG and APNG are both dead or dying. I wish there was a better way to do this that I knew about. -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Gdk PixbufAnimation supported formats
On Thu, Apr 18, 2013 at 12:40 AM, Kip Warner wrote: > Thanks Tadej. It looks like the only format that supports animation that > I can see on my system, and perhaps everywhere at best, is GIF. Do you > have any suggestions for another approach to a simple animation that > supports transparency and more than 8 bit colour? You can make a few png or jpg frames and hook up a g_timeout_add() callback to set the pixbuf on a GtkImage. I done similar when I needed to dynamically scale animated gifs. Be sure to stop your timeout on unmap()/unrealize(), especially if you have more than a handful of animated images instantiated anywhere. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Gdk PixbufAnimation supported formats
Il Wed, 17 Apr 2013 23:31:39 -0700 Kip Warner scrisse: > If anyone has any other suggestions, I'm all ears. Thanks. Hi Kip, my best suggestion is not to use animations: I hate moving things in apps and I'm pretty sure I'm not alone. Given that, years ago I used a GTK+2 burning front-end [1] that integrated a libmng [2] animation while burning. It is coded in C though. Keep in mind IMO the PNG animation status is moribund. Ciao. -- Nicola [1] http://graveman.tuxfamily.org/ [2] http://sourceforge.net/projects/libmng/ ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Gdk PixbufAnimation supported formats
On Thu, 2013-04-18 at 09:31 +0200, Tadej Borovšak wrote: > Gtk+ uses gdk-pixbuf [1] library to load/store images. You can check > what image formats your library supports by calling > gdk-pixbuf-query-loaders [2] utility. Thanks Tadej. It looks like the only format that supports animation that I can see on my system, and perhaps everywhere at best, is GIF. Do you have any suggestions for another approach to a simple animation that supports transparency and more than 8 bit colour? -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Gdk PixbufAnimation supported formats
Hi. 2013/4/18 Kip Warner > > I've tried looking through the Gtk+ source in gdk/* and gtk/*, but > maybe I've just been looking in the wrong places. I also tried looking > through what relevant documentation I could find on the Gdk's C API, > and didn't manage to find what I needed. I'm guessing that perhaps this > is because the actual loading is deferred to some other lower level > external backend to Gdk, such as Cairo, but I'm speaking from > ignorance. Gtk+ uses gdk-pixbuf [1] library to load/store images. You can check what image formats your library supports by calling gdk-pixbuf-query-loaders [2] utility. Cheers, Tadej [1] https://developer.gnome.org/gdk-pixbuf/stable/ [2] https://developer.gnome.org/gdk-pixbuf/stable/gdk-pixbuf-query-loaders.html -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Gdk PixbufAnimation supported formats
Hey list, I'm having some difficulty trying to track down the animated file formats supported by gdk_pixbuf_animation_new_from_file(). I am using the function via PyGI / GObject introspection. I know for a fact that it supports animated GIFs, but beyond that, I do not know (e.g. MNG? APNG?). GIF works as a last resort for my purposes, but the constraint of 256 colours is rather limiting. I've tried looking through the Gtk+ source in gdk/* and gtk/*, but maybe I've just been looking in the wrong places. I also tried looking through what relevant documentation I could find on the Gdk's C API, and didn't manage to find what I needed. I'm guessing that perhaps this is because the actual loading is deferred to some other lower level external backend to Gdk, such as Cairo, but I'm speaking from ignorance. The reason I ask is I'd like to use some simple animation in my Gtk+ 3 / PyGI application. The animation is really too simple to warrant Clutter or GStreamer, but enough to at least need basic transparency and preferably > 8 bit colour. If anyone has any other suggestions, I'm all ears. Thanks. -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
