Sorting GtkListStore date column
I'm fairly new to GTK programming, and I'm helping out on an open source GTK-based project (gcvs, part of the cvsgui project.) We have a GtkListStore with a column containing date. The column is specified as G_TYPE_STRING. When sorted, it does an alphanumeric sort, so in English it puts all the Fridays together first, followed by all the Mondays, Saturdays, Sundays, etc. Obviously, I want to sort this in date sequence. How do I accomplish this? I searched the archives before posting and couldn't find anything applicable. Thanks. -- Guy Rouillier ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Handling Unix signals in a GTK+ application
Chris Vine wrote: On Saturday 11 March 2006 22:36, Thomas Okken wrote: [Using a pipe] is generally the best way of dealing with asynchronous (Unix) signals, but for simple cases another approach is just to set a flag of type volatile sig_atomic_t in the Unix signal handler, and then check and act on the status of the flag in the glib event loop with an idle handler set up with g_idle_add(). The downside of that approach is that you have to busy-wait on that flag, while the pipe approach allows the application to be completely idle (and still have fast response to the signal)... I went with the pipe approach; using the sample code referred to by another poster, it turned out to be pretty easy. That's not right. Idle handlers do not busy wait. They do trigger invocations of the event loop at indeterminate intervals. They are also very common (if you don't want to communicate with the glib event loop from other threads with a pipe, you are likely to end up with using a GAsyncQueue object and an idle handler). The main problem I see with idle handlers is that there may be application types on which they rarely or never get triggered, simply because the app doesn't go idle. This is commonly the case for games and multimedia applications, which may consume all CPU power there is, possibly generating their own GTK+ signals for redrawings or other tasks all the time, or other sorts of applications which perform long calculations and may see the main loop only via gtk_main_iteration() if there are events pending. Such applications wouldn't enter idle state (hence not triggering the idle handler) for potentially long periods. On the other hand, news from a pipe could still be received and processed nearly instantaneous, as they have higher priority than idle events. However, if you know your application belongs to the majority of GTK+ applications, that is, it stays in the outermost main loop, spending most of its time actually being idle, then using the idle handler may be appropriate. But as explained, it's not quite as fail-safe as pipes. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
change color of certian words in a text
i want to change the color of certian words in a text,for example: when you input some word in a text ,then certain words are changed color. if i were a bird ,then i can fly,when i input the sentence ,then word if and word then change color(from black to red),but other words still keep original color,how can i do it? thank you! regards ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
AMD64 Installation/Usage-Experience Checklist?
I was just on the Ubuntu site http://www.ubuntu.com/testing/flight5 ... and noted that they have a checklist of sorts for people to report back on their installation and experience using the software. ( scoll down the page to the 'testing' section or click here for the long vesion of the test checklist: https://wiki.ubuntu.com/Testing/Long ) I was just wondering if AMD64 should have the same sort of thing? Such a check list could be posted on this site: http://www.debian.org/ports/amd64/ ... with a request that people join the mailing list to submit the results of their experience. -- Tony ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Sorting GtkListStore date column
On Sunday 12 March 2006 19:30, Chris Vine wrote: On Sunday 12 March 2006 09:11, Guy Rouillier wrote: I'm fairly new to GTK programming, and I'm helping out on an open source GTK-based project (gcvs, part of the cvsgui project.) We have a GtkListStore with a column containing date. The column is specified as G_TYPE_STRING. When sorted, it does an alphanumeric sort, so in English it puts all the Fridays together first, followed by all the Mondays, Saturdays, Sundays, etc. Obviously, I want to sort this in date sequence. How do I accomplish this? I searched the archives before posting and couldn't find anything applicable. Thanks. You can sort on a hidden column in the list store (that is, one not displayed in a tree view) which has, say, this format: MMDDSS Sorry, that should of course be MMDDHHMMSS (expressed numerically). Chris ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Handling Unix signals in a GTK+ application
Gus Koppel wrote: However, if you know your application belongs to the majority of GTK+ applications, that is, it stays in the outermost main loop, spending most of its time actually being idle, then using the idle handler may be appropriate. But as explained, it's not quite as fail-safe as pipes. My application is scriptable, so while it's running a script, an idle handler would never get invoked... Not that that's such a problem, because it would be easy enough to insert a check for an interrupted flag in the script interpreter's main loop. My concern is what happens when the application actually *is* idle. Using an idle handler does not prevent you from having to busy-wait in that case, it just means you're using a fancy mechanism to do it; you still have to make the compromise between fast response (by having an idle handler that basically sucks up all free CPU cycles) or being multitask-friendly (by using a timer so you only check every second, say). The big plus of the pipe approach is you get the best of both. soapboxI think GTK+ really should have its XtNoticeSignal() equivalent. It's a strange omission, IMHO -- but I guess it keeps falling through the cracks because it's not too difficult to work around./soapbox __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Sorting GtkListStore date column
Chris Vine wrote: Obviously, I want to sort this in date sequence. How do I accomplish this? I searched the archives before posting and couldn't find anything applicable. Thanks. You can sort on a hidden column in the list store (that is, one not displayed in a tree view) which has, say, this format: MMDDSS Sorry, that should of course be MMDDHHMMSS (expressed numerically). Thanks, Chris and Fredderic for the suggestions. Fredderic, gCvs is is a desktop GUI to manage CVS repositories, so the date range for listed files can span multiple years. Hence, a day-of-the-week approach won't work. I'll use the approach of storing the time_t corresponding to each displayed date in a hidden column, and use that hidden column as the sort column for the date column. Out of curiosity, would it also be possible to do this in a single column by storing just the time_t, and using a custom renderer to transform the time_t value into a displayable string? Is sorting done on the rendered text or on the underlying data? -- Guy Rouillier ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
