Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
Hello. On 2015-04-13 at 21:21, Sam Spilsbury wrote: > I initially thought you could probably hook into the function where > text is rendered[1], but I don't know if that's exactly what you want. I've looked there, but I don't think that's the right place either. We have to notify the accessibility bus that the text is changed when it does. > That said, I'm sure they all follow the same logic. Perhaps its a > candidate for refactoring into a utility function in the text plugin, > which can also emit such a signal? If that's the clean way to do it, sure. I'm asking to the Orca people as well. Thanks, -- Luca Saiu Hypra team (Accessible website in construction) ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
Hello Samuel. On 2015-04-13 at 15:44, Samuel Thibault wrote: > The screen-reader side of the discussion would then > probably be the orca devel mailing list. Thanks. I'll write to the Orca list. -- Luca Saiu Hypra team (Accessible website in construction) ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
Hello. On 2015-04-13 at 09:25, Stephen M. Webb wrote: > The > preferred option would be to provide a > separate plugin that performs the TTS as appropriate, and that plugin can pull > in whatever evil necessities it wants. Yes, this is very reasonable. Speaking of that, is there an example in Compiz of conditional code behaving differently when another module is loaded? This would be something like an optional module dependency. If this were the route to follow then the code in plugins/text/src/text.cpp would call the accessibility plugin if enabled, and do nothing new if disabled. Thanks, -- Luca Saiu Hypra team (Accessible website in construction) ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
Hello. On 2015-04-13 at 16:14, MC Return wrote: > Have you tried to activate this option to see > if it fixes your problem ? I've tried it on the Application Switcher plugin; as far as I can see the option is not available on the other switchers. Anyway unfortunately no, vocalization doesn't happen until switching is over and the selected window actually rises. I was thinking that the window decorator was responsible for vocalizing the title but now I see that that's is not the case -- disabling emerald didn't change the behavior. Focus on Switch doesn't seem to have any effect with respect to title vocalization. > If the window title is vocalized after switching it probably is a reaction > to the focus change and thus the functionality to trigger vocalization is > already there That's encouraging; things would be much simpler if it could be done that way. Worth investigating. Thanks, -- Luca Saiu Hypra team (Accessible website in construction) ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
On 04/13/2015 04:10 PM, MC Return wrote: On 04/13/2015 03:10 PM, Luca Saiu wrote: On 2015-04-13 at 15:05, Luca Saiu wrote: I was initially surprised after discovering that the window title is not drawn with GTK Just to make this clear, the window title is vocalized *after* switching window, but that's too late. A blind user will want to cycle among the open windows one by one before choosing one. Thanks, If the window title is vocalized after switching it probably is a reaction to the focus change and thus the functionality to trigger vocalization is already there - the solution would then be to simply add an option to change the focus on window selection, which the switcher plugin already has integrated (Focus On Switch). Have you tried to activate this option to see if it fixes your problem ? Greetinx, MC Return ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
A curious thing: In compiz v0.8.*, the screen reader correctly vocalizes the window title. Maybe it would be an starting point, wouldn't it? 2015-04-13 8:55 GMT-04:30, Stephen M. Webb : > On 15-04-13 09:05 AM, Luca Saiu wrote: >> >> While playing with Compiz window switchers (there are several) I noticed >> that the selected window name is displayed but not vocalized by the >> screen reader. >> >> I was initially surprised after discovering that the window title is not >> drawn with GTK; but I understand that Compiz itself does not actually >> depend on GTK --- only the GTK window decorator and CCSM use it. So >> Compiz renders text using Cairo on top of an OpenGL surface, which is >> all very reasonable. >> >> In this situation, what's the cleanest way of making the selected window >> title accessible? Is there an easy way of using ATK without making a >> GTK label just for the purpose, or should I try some other route? > > I'm not sure if we want to start dragging all kinds of external dependencies > into many generic plugins, especially > massive foreign libraries like those from the Glib family (eg. ATK). The > preferred option would be to provide a > separate plugin that performs the TTS as appropriate, and that plugin can > pull in whatever evil necessities it wants. > > -- > Stephen M. Webb > ___ > compiz mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/compiz > -- Salu2 Luis F. González V. ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
On 15-04-13 09:05 AM, Luca Saiu wrote: > > While playing with Compiz window switchers (there are several) I noticed > that the selected window name is displayed but not vocalized by the > screen reader. > > I was initially surprised after discovering that the window title is not > drawn with GTK; but I understand that Compiz itself does not actually > depend on GTK --- only the GTK window decorator and CCSM use it. So > Compiz renders text using Cairo on top of an OpenGL surface, which is > all very reasonable. > > In this situation, what's the cleanest way of making the selected window > title accessible? Is there an easy way of using ATK without making a > GTK label just for the purpose, or should I try some other route? I'm not sure if we want to start dragging all kinds of external dependencies into many generic plugins, especially massive foreign libraries like those from the Glib family (eg. ATK). The preferred option would be to provide a separate plugin that performs the TTS as appropriate, and that plugin can pull in whatever evil necessities it wants. -- Stephen M. Webb ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
Hey Luca On Mon, Apr 13, 2015 at 9:10 PM, Luca Saiu wrote: > On 2015-04-13 at 15:05, Luca Saiu wrote: > >> I was initially surprised after discovering that the window title is not >> drawn with GTK > > Just to make this clear, the window title is vocalized *after* switching > window, but that's too late. A blind user will want to cycle among the > open windows one by one before choosing one. > That's an interesting question, since I suppose the text plugin (which handles the drawing of the text for all switchers except staticswitcher and the normal switcher) wasn't really written with this in mind. I imagine the end-goal here would probably be to find out when a switcher intends to display text and then emit a signal of some sort using d-bus. I initially thought you could probably hook into the function where text is rendered[1], but I don't know if that's exactly what you want. Plugins can pre-render the texture containing the text at any time, but its up to them to draw it on-screen. That said, I'm sure they all follow the same logic. Perhaps its a candidate for refactoring into a utility function in the text plugin, which can also emit such a signal? Sam. [1] http://bazaar.launchpad.net/~compiz-team/compiz/0.9.12/view/head:/plugins/text/src/text.cpp#L370 [2] http://bazaar.launchpad.net/~compiz-team/compiz/0.9.12/view/head:/plugins/text/src/text.cpp#L481 > Thanks, > > -- > Luca Saiu > Hypra team (Accessible website in construction) > ___ > compiz mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/compiz -- Sam Spilsbury ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
Re: [compiz] Accessibility of Cairo/OpenGL text: ATK without GTK?
On 2015-04-13 at 15:05, Luca Saiu wrote: > I was initially surprised after discovering that the window title is not > drawn with GTK Just to make this clear, the window title is vocalized *after* switching window, but that's too late. A blind user will want to cycle among the open windows one by one before choosing one. Thanks, -- Luca Saiu Hypra team (Accessible website in construction) ___ compiz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/compiz
