Efficiency question
Greetings, I am developing a gtk app that uses motion events to capture mouse pointer location and continuously update a gtk label. I have also implemented routines to drag various gnome canvas items around a canvas. I have found that calling the gtk_label_set_text routine to update the label significantly degrades performance of the app. There is a serious lag during fast canvas item drag that disappears completely when I comment out the gtk_label_set_text call. Without this line, the items drag completely smooth even at full screen zoom. With the line, I get smooth scrolling up to a certain app size, any larger causes slowdown. The label, along with the canvas, is packed into a table. My thinking is that the label changing text is causing all the widgets within the table to trigger a size_allocate or something. The bigger the app, the more expensive the size allocate. I did notice that the label widget changes size depending on the text size. I played around with various packing options (x expand, fill, etc, etc), but couldn't get any improvement. Any ideas on how to fix this? Thanks, Jason ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
building XML- and/or GTK source code from ANSI-C code
Hi, Glade is baing used to build C-code for GTK/GNOMEfrom XML-code, which is fine for some projects. However if you have an extensive set of C-libraries and you simply want to put them into a GTK/GNOME interface, at this moment you have to build the XML-code by hand which is very cumbersome. Are there scripts to convert ANSI-C prototypes int XML ? It would already be a great help if it would be possible to create the dialogs in this way. If there are scripts to create GTK/GNOME C-code starting form the ANSI_C prototypes this would help too of course. e.g.: int myfunc( int a, int b ) - ?xml version=1.0? GTK-Interface project ... widget classGtkMenuItem/class namemyfunc/name signal nameactivate/name handleron_myfunc_activate/handler last_modification_timeTue, 22 Oct 2002 07:40:26 GMT/last_modification_time /signal labelMyfunc/label right_justifyFalse/right_justify ... Kind regards, Peter Van Osta http://ourworld.compuserve.com/homepages/pvosta/cvwww.htm ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Efficiency question
The Surprises wrote: I am developing a gtk app that uses motion events to capture mouse pointer location and continuously update a gtk label. I have also implemented routines to drag various gnome canvas items around a canvas. I have found that calling the gtk_label_set_text routine to update the label significantly degrades performance of the app. There is a serious lag during fast canvas item drag that disappears completely when I comment out the gtk_label_set_text call. Without this line, the items drag completely smooth even at full screen zoom. With the line, I get smooth scrolling up to a certain app size, any larger causes slowdown. The label, along with the canvas, is packed into a table. My thinking is that the label changing text is causing all the widgets within the table to trigger a size_allocate or something. The bigger the app, the more expensive the size allocate. I did notice that the label widget changes size depending on the text size. I played around with various packing options (x expand, fill, etc, etc), but couldn't get any improvement. Any ideas on how to fix this? Hi, as an experiment you could try gtk_widget_set_usize(100,100) on the label. This would give it a useless but fixed size ... if your app still runs slowly, you'll be able to rule out resizing problems. Another solution would be to add a timer to your motion callback, and limit label updates to no more than (eg.) 5 per second. That should be fast enough for the user and it'll take the CPU load right down. John == Madame de Pompadour Images of a Mistress 16 October 2002 - 12 January 2003 For information and tickets: http://www.nationalgallery.org.uk/exhibitions/pompadour/default.htm ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Gtk 1.2 gtk_menu_get_title ()
Hi All I am using Gtk 1.2. I want to get title of Gtk Menu so is there any function for getting it. we know about gtk_menu_set_title () , but couldn't find like gtk_menu_get_title (); so if anybody knows how to change GtkMenu title please let me know. Thanks in Advance Amit Jain ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Gtk 1.2 gtk_menu_get_title ()
amitjain wrote: Hi All I am using Gtk 1.2. I want to get title of Gtk Menu so is there any function for getting it. we know about gtk_menu_set_title () , but couldn't find like gtk_menu_get_title (); so if anybody knows how to change GtkMenu title please let me know. You can use this to get the title of GtkMenu: (gchar*)gtk_object_get_data(menu, gtk-menu-title); Olexiy ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
gtk install problems
To all, I have been trying to install GTK for about 2 weeks. I have solved many problems along the way, but I am completely stuck on this one. GCC is telling me /h/gtk/gtk-query-immodules-2.0*.la gtk.immodules make[3]: *** [gtk.immodules] Error 139 make[3]: Leaving directory '/h/gtk+12.0.6/modules/input Please help! Sarah Leitner __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Job ad: Red Hat OS developer
Hi, (shameless job ad, delete if not interested [1]) Wanted to let people know about the Operating System Engineer job mentioned on http://www.redhat.com/about/careers/. This isn't a GTK/GNOME position specifically, though it may involve some of that. Run rpm -qa | less and look at all the packages, you might deal with any of them. We have openings in both the desktop team and the core OS team. The desktop team covers KDE, OpenOffice, Mozilla, WINE, etc. in addition to GNOME. The core OS team covers everything from CUPS to sendmail to Emacs. The job is a mix of developing new code, packaging upstream code, keeping in touch with upstream maintainers, and fixing incoming bugs on https://bugzilla.redhat.com. Feel free to ask me questions if you want to know what the life of a Red Hat developer is like. We're open minded about your exact experience and skill set, as long as you are an outstanding C or C++ programmer who's excited about doing a lot of work to advance Red Hat Linux (and open source software in general). Relocation to Boston or Raleigh is expected. There may also be a position in Stuttgart, Germany, though it isn't listed on the web site yet. If you're interested, follow the directions on http://www.redhat.com/about/careers/ to apply. Thanks, Havoc [1] http://mail.gnome.org/archives/gtk-list/2002-August/msg00118.html ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
GTK 2.0 reference
Can anyone recommend a good GTK 2.0 book? I have some 1.2 reference, but will make the move to 2.0 soon. Thanks, Tony /---\ | Tony Denault | Email: [EMAIL PROTECTED] | | Institute for Astronomy | Phone: (808) 932-2378 | | 640 North Aohoku Place |Fax: (808) 933-0737 | | Hilo, Hawaii 96720 || \---/ ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Moving canvas item's to new canvas not working
I am trying to move gnome_canvas_item's from one canvas to another. I am using gnome_canvas_item_reparent, and giving it the item to move, and the new canvas's root, like this: gnome_canvas_item_reparent (clip_box, gnome_canvas_root(GNOME_CAVAS(new_canvas )); I get the following error when I try this: GnomeUI-CRITICAL **: file gnome-canvas.c: line 1280 (gnome_canvas_item_reparen t): assertion `item-canvas == GNOME_CANVAS_ITEM (new_group)-canvas' failed. It's not liking the reparenting for some reason but I'm not getting it. Any ideas? reparenting doesn't mean moving from one canvas to another, it means moving from one group to another. there is no way to do this without breaking the API open. --p ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Moving canvas item's to new canvas not working
On Tue, Oct 22, 2002 at 08:39:29PM -0400, Paul Davis wrote: I am trying to move gnome_canvas_item's from one canvas to another. I am using gnome_canvas_item_reparent, and giving it the item to move, and the new canvas's root, like this: gnome_canvas_item_reparent (clip_box, gnome_canvas_root(GNOME_CAVAS(new_canvas )); I get the following error when I try this: GnomeUI-CRITICAL **: file gnome-canvas.c: line 1280 (gnome_canvas_item_reparen t): assertion `item-canvas == GNOME_CANVAS_ITEM (new_group)-canvas' failed. It's not liking the reparenting for some reason but I'm not getting it. Any ideas? reparenting doesn't mean moving from one canvas to another, it means moving from one group to another. there is no way to do this without breaking the API open. --p That's what I figured :( Guess I'll have to do it the hard way. Speaking of that, is there any way to redirect canvas item events to another canvas item? For example, if I am implemented a drag and drop routine between canvas', while the user has the button pressed and is moving a canvas item from one canvas to another, I would like to delete the first item, create a new item in the new canvas, and have that new item take over the button press/release event. Is this possible? ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
stop user from select new tab in notebook
Hi, I have a notebook page where the user can select some things. When the user wants to go to another page of the notebook, I wanted to verify the data he selected. g_signal_connect (G_OBJECT (notebook), switch_page,G_CALLBACK (refresh),NULL)); In this refresh function, I calculate if the textentries and so have proper values... If not, I tried to this: gtk_notebook_set_current_page(GTK_NOTEBOOK(notebook),3); ..in order he cant' move away from page 3.(in this callback function..from the 'switch_page' ..callback. This seems not to work unfortunately. ... maybe because when gtk sets the new page after my function maybe. Does anybody know how I could do this? (well another solution would be to take care of everything the user changes, and then react there directly..before he can try to leave the page). I just thought I could also work when I just send him back to where he just were .. which really doens't seem to work. Thanks for any hints marco candrian ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Moving canvas item's to new canvas not working
moving a canvas item from one canvas to another, I would like to delete the first item, create a new item in the new canvas, and have that new item take over the button press/release event. Is this possible? yes, but you'll likely have no head left when you're done, because it will rise up and bite it off. seriously, thats a deeply ugly hack. don't do it. --p ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Moving canvas item's to new canvas not working
On Tue, Oct 22, 2002 at 09:48:43PM -0400, Paul Davis wrote: moving a canvas item from one canvas to another, I would like to delete the first item, create a new item in the new canvas, and have that new item take over the button press/release event. Is this possible? yes, but you'll likely have no head left when you're done, because it will rise up and bite it off. seriously, thats a deeply ugly hack. don't do it. --p How would I go about doing it then? I could merge all my seperate canvas' into one, but then I'd have to handle all the packing/resizing/etc myself which I really didn't want to have to do. ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
(no subject)
Hi all, I'm working on GTK,in fact,I've just started.My task is to create Multiple windows.Is there any such option in GTK?We are Glade to do the programming. AlsoI want to know if the display in the Tables is editable during runtime,ie,dynamically? How doI create multiple windows in one window?The main idea is to click on the child window and it should expand to a bigger one. Anyways,Thanx in advance. Preethi. Get a speedy connection with MSN Broadband. Join now! Click Here ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Multiple Windows,Editable Tables
Hi all, I'm working on GTK and we are using Glade to do the programming.In fact,I've started working just now. The main task assigned to me is to create multiple windows in a main window.The idea is to click on the small window in the main window and generate a new window related to the small window .Is there any such option in GTK using GLADE?Pls let me know the way. Another thing is to create Tables or CLists which can be edited during during runtime.The idea is to provide the user to edit his own values for any no.of entries into the Table or List.Can I do that? Anyways thanx in advance. Preethi. ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
Change Font of GtkClist title
Hi !!! I am using Gtk1.2. I wnat to set font for GtkClist title. I am doint it in this way. style = gtk_widget_get_style( clist ) ; style-font = font_load; gtk_widget_set_style( clist, style ) ; But it is not reflecting chang on GtkClist title. Please help me. Thanks in Advance Amit Jain ___ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
