Can GTK+ make use of XSHM extension from MIT
Hello, I am running GTK+ in a singal machine, the machine is slow so I want make GTK+ use XSHM extension to accelerate the drawing speed. By taking a look at both GTK+ source code and the MIT-SHM paper, my conclusion is : 1) The XSHM can only support XImage and Pixmap. 2) The GTK+ engine update the image using XCopyArea, so its impossible to accelerate the entire process. I am thinking a case, we do all the rendering process in GTK+ side(such as use pango to render text, use other library to render image), the transfer the rendered image to XServer using XSHM, then draw this Image to the window. Will this work? Thanks. Bin ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Can GTK+ make use of XSHM extension from MIT
On Jan 10, 2008 4:26 PM, Tapani Pälli [EMAIL PROTECTED] wrote: Hello; ext Bin Chen wrote: Hello, I am running GTK+ in a singal machine, the machine is slow so I want make GTK+ use XSHM extension to accelerate the drawing speed. By taking a look at both GTK+ source code and the MIT-SHM paper, my conclusion is : 1) The XSHM can only support XImage and Pixmap. It is supporting the creation of XImage structure in shared memory and 'transferring' it to X-server to be used as a pixmap. 2) The GTK+ engine update the image using XCopyArea, so its impossible to accelerate the entire process. I am thinking a case, we do all the rendering process in GTK+ side(such as use pango to render text, use other library to render image), the transfer the rendered image to XServer using XSHM, then draw this Image to the window. SHM extension is made to 'accelerate' data transfer between X client and server when they reside on same machine. When data is on server end, it can be used and manipulated via Xlib commands such as XCopyArea and the operation is done on server side. Operation performance depends on the X-server driver implementation. Will this work? Your usecase is valid, but are you facing some performance issues with current implementation? Have you profiled where the time is actually spent? You might want to create these buffers (images) beforehand and then transfer them to server. See also XRender API for rendering and manipulating buffers on server-side. I am not doing very detailed profiling against this, but by comparing the frame rate in my player against using pure framebuffer implementation. The performance difference is large. If not using shared memory to transfer the decoded image data, obviously the performance can't be good in slow machine. The GTK+ can draw pixbuf and image to the drawable, is there any existing method for me to choose to force the low level gdk to use SHM extension? Thanks. Bin ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Can GTK+ make use of XSHM extension from MIT
Hello; ext Bin Chen wrote: Hello, I am running GTK+ in a singal machine, the machine is slow so I want make GTK+ use XSHM extension to accelerate the drawing speed. By taking a look at both GTK+ source code and the MIT-SHM paper, my conclusion is : 1) The XSHM can only support XImage and Pixmap. It is supporting the creation of XImage structure in shared memory and 'transferring' it to X-server to be used as a pixmap. 2) The GTK+ engine update the image using XCopyArea, so its impossible to accelerate the entire process. I am thinking a case, we do all the rendering process in GTK+ side(such as use pango to render text, use other library to render image), the transfer the rendered image to XServer using XSHM, then draw this Image to the window. SHM extension is made to 'accelerate' data transfer between X client and server when they reside on same machine. When data is on server end, it can be used and manipulated via Xlib commands such as XCopyArea and the operation is done on server side. Operation performance depends on the X-server driver implementation. Will this work? Your usecase is valid, but are you facing some performance issues with current implementation? Have you profiled where the time is actually spent? You might want to create these buffers (images) beforehand and then transfer them to server. See also XRender API for rendering and manipulating buffers on server-side. Thanks. Bin ___ maemo-developers mailing list [EMAIL PROTECTED] https://lists.maemo.org/mailman/listinfo/maemo-developers // Tapani Pälli -- Software Engineer Open Source Software Operations ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Can GTK+ make use of XSHM extension from MIT
Hello; ext Bin Chen wrote: On Jan 10, 2008 4:26 PM, Tapani Pälli [EMAIL PROTECTED] wrote: Hello; ext Bin Chen wrote: Hello, I am running GTK+ in a singal machine, the machine is slow so I want make GTK+ use XSHM extension to accelerate the drawing speed. By taking a look at both GTK+ source code and the MIT-SHM paper, my conclusion is : 1) The XSHM can only support XImage and Pixmap. It is supporting the creation of XImage structure in shared memory and 'transferring' it to X-server to be used as a pixmap. 2) The GTK+ engine update the image using XCopyArea, so its impossible to accelerate the entire process. I am thinking a case, we do all the rendering process in GTK+ side(such as use pango to render text, use other library to render image), the transfer the rendered image to XServer using XSHM, then draw this Image to the window. SHM extension is made to 'accelerate' data transfer between X client and server when they reside on same machine. When data is on server end, it can be used and manipulated via Xlib commands such as XCopyArea and the operation is done on server side. Operation performance depends on the X-server driver implementation. Will this work? Your usecase is valid, but are you facing some performance issues with current implementation? Have you profiled where the time is actually spent? You might want to create these buffers (images) beforehand and then transfer them to server. See also XRender API for rendering and manipulating buffers on server-side. I am not doing very detailed profiling against this, but by comparing the frame rate in my player against using pure framebuffer implementation. The performance difference is large. If not using shared memory to transfer the decoded image data, obviously the performance can't be good in slow machine. You did not mention a 'player' before. Video playback is very much of a special case. Are you drawing/compositing other elements on top of video? If so, you are entering very experimental areas here. You might want to check out Xv extension which is available for video. I don't know much about video so I'll stop here, good luck :-) The GTK+ can draw pixbuf and image to the drawable, is there any existing method for me to choose to force the low level gdk to use SHM extension? Thanks. Bin // Tapani Pälli -- Software Engineer Open Source Software Operations ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Whats the purpose of libegg
On 06/01/2008, Bin Chen [EMAIL PROTECTED] wrote: I searched the internet for libegg and found some tips but still can't got whats libegg working for? Is it another useful widget lib? After I check out the libegg and catch the README: - All features are intended to end up in a stable platform library when they're ready. Whats the meaning? My understanding is that libegg is for code that is useful enough to be shared, but experimental enough to exclude it from a package like GTK or GLib that promises API stability. Eventually, as consensus forms about its design and implementation, the code gets migrated to the appropriate package, but in the meantime, you just copy and paste libegg code into your source. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: OpenGL interface
On Thursday 03 January 2008 19:02:03 Peter Hildebrandt wrote: Happy new year everyone, I'd like to use opengl in my gtk application. I've come across GtkGLArea [1] and GtkGLExt [2]. The former appears to be undocumented, while the latter is according to the website no longer actively maintained. The latter website says: GtkGLExt has new maintainers! More information will be available soon. Which one should I use? Or is there a different solution out there? I am working on linux (Ubuntu 7.10, GTK 2.20). You can use the package popularity contest to find out what most other people are using. This is an excellent way to jump straight to mature software! I get: libgtkglext1: 42,020 gtkglarea5:8,148 libgtkglext1-dev: 2,614 gtkglarea5-dev: 652 So the newer GTKGLExt library is substantially more common among both users and developers. I actually use GLArea from OCaml and haven't had any difficulties (although I don't distribute in compiled form). -- Dr Jon D Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com/products/?e ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk and color in a GtkTextview
Hi,
First of all sorry for my bad english .
I would like to know how I can color text entered in a GtkTextView (in real
time), let me explain.
first when the user enter text it is displayed normally, then if my lexer
recognize the text, I want to be able to color it, I have the lexer, the
problem is with the coloring. This is what I have done as a start in
coloring fonts but it doesn't work. Can someone please tell me what am I
missing.
thank you
*/--
GtkTextView (color)
--
*/
#include gtk/gtk.h
int main (int argc, char **argv)
{
GtkWidget *p_fenetre = NULL;
GtkWidget *p_zone_texte = NULL;
GtkTextBuffer *p_tampon = NULL;
GtkTextIter start;
GtkTextIter end;
gtk_init (argc, argv);
p_fenetre = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (p_fenetre), 320, 200);
p_zone_texte = gtk_text_view_new ();
p_tampon = gtk_text_view_get_buffer (GTK_TEXT_VIEW (p_zone_texte));
gtk_container_add (GTK_CONTAINER (p_fenetre), p_zone_texte);
gtk_text_buffer_create_tag (p_tampon, font-blue, foreground, blue,
NULL);
gtk_text_buffer_get_bounds (p_tampon, start, end);
gtk_text_buffer_apply_tag_by_name (p_tampon, font-blue, start, end);
gtk_widget_show_all (p_fenetre);
g_signal_connect (G_OBJECT (p_fenetre), delete_event, G_CALLBACK
(gtk_main_quit), NULL);
/* Boucle */
gtk_main ();
return 0;
}
--
View this message in context:
http://www.nabble.com/gtk-and-color-in-a-GtkTextview-tp14497051p14497051.html
Sent from the Gtk+ - Apps Dev mailing list archive at Nabble.com.
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Can GTK+ make use of XSHM extension from MIT
On Thu, 2008-01-10 at 16:50 +0800, Bin Chen wrote: The GTK+ can draw pixbuf and image to the drawable, is there any existing method for me to choose to force the low level gdk to use SHM extension? if the Xshm extension is available at compile time, gtk+ will use it; there's no need to force anything. ciao, Emmanuele. -- Emmanuele Bassi, W: http://www.emmanuelebassi.net B: http://log.emmanuelebassi.net ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Test
Just a test! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
menu sensitivity setup hook
Hello, I have been searching around to find the appropriate way (hook) to know when to setup the sensitivity of the menu and toolbar (action) items in my GTK app. All other UI frameworks that I have ever worked with had a well defined way to get notified that the menu items needed their enabled/ disabled state setup. But I have not found this place in GTK. Any ideas? thanks, steve ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Destroying a GtkNotebook
Hello, I am delopping an application on Windows XP that uses a GtkNotebook but I don't know how can I destroy it without destoying the application. At the initialization of my application, I create the menu, the toolbar and when I open a file, a GtkNotebook is created to draw some information. But, when this file is closed, I need to close this Notebook too (because the drag and drop doesn't work with a notebook). To do that, I am using g_object_unref() function but I have some warnings : GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed I think that is not the better way to destroy the notebook and to free all the associated memory. Have you any solution that can help me ? Thank you in advance, Cyril ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
How to program a simple dialog?
Hello all,
i try to program a simple dialog without success.
Here is my actual code:
code
#include unistd.h
#include stdlib.h
#include gtk/gtk.h
void quick_message () {
GtkWidget *system_dialog, *label;
/* Create the widgets */
system_dialog = gtk_dialog_new ();
gtk_widget_set_name (system_dialog, system_dialog);
gtk_window_set_title (GTK_WINDOW (system_dialog), System Settings);
gtk_window_set_position (GTK_WINDOW (system_dialog), GTK_WIN_POS_CENTER);
gtk_window_set_modal (GTK_WINDOW (system_dialog), TRUE);
gtk_window_set_default_size (GTK_WINDOW (system_dialog), 500, 280);
gtk_window_set_resizable (GTK_WINDOW (system_dialog), FALSE);
gtk_window_set_type_hint (GTK_WINDOW (system_dialog),
GDK_WINDOW_TYPE_HINT_DIALOG);
label = gtk_label_new ();
/* Ensure that the dialog box is destroyed when the user responds. */
g_signal_connect_swapped (system_dialog,
response,
G_CALLBACK (gtk_widget_destroy),
system_dialog);
/* Add the label, and show everything we've added to the dialog. */
gtk_container_add (GTK_CONTAINER (GTK_DIALOG(system_dialog)-vbox),
label);
gtk_widget_show_all (system_dialog);
}
int main(int argc, char *argv[])
{
quick_message();
return 0;
}
/code
Here is my compile line: cc -o tc_system_new main.c `pkg-config --cflags
--libs gtk+-2.0 gthread-2.0 glib-2.0`
And here is my error output:
[EMAIL PROTECTED]:~/Desktop/really_new# ./tc_system_new
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-CRITICAL **: g_once_init_leave: assertion
`initialization_value != 0' failed
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-CRITICAL **: g_once_init_leave: assertion
`initialization_value != 0' failed
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(process:6096): GLib-CRITICAL **: g_once_init_leave: assertion
`initialization_value != 0' failed
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.14.1/gobject/gtype.c:2242:
initialization assertion failed, use IA__g_type_init() prior to this
function
(process:6096): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(process:6096): GLib-CRITICAL **: g_once_init_leave: assertion
`initialization_value != 0' failed
(process:6096): GLib-GObject-CRITICAL **: g_object_new: assertion
`G_TYPE_IS_OBJECT (object_type)' failed
Any suggestions?
Best regards,
flo
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to program a simple dialog?
Florian Harmuth wrote:
Hello all,
i try to program a simple dialog without success.
Here is my actual code:
code
#include unistd.h
#include stdlib.h
#include gtk/gtk.h
void quick_message () {
GtkWidget *system_dialog, *label;
/* Create the widgets */
system_dialog = gtk_dialog_new ();
gtk_widget_set_name (system_dialog, system_dialog);
gtk_window_set_title (GTK_WINDOW (system_dialog), System Settings);
gtk_window_set_position (GTK_WINDOW (system_dialog), GTK_WIN_POS_CENTER);
gtk_window_set_modal (GTK_WINDOW (system_dialog), TRUE);
gtk_window_set_default_size (GTK_WINDOW (system_dialog), 500, 280);
gtk_window_set_resizable (GTK_WINDOW (system_dialog), FALSE);
gtk_window_set_type_hint (GTK_WINDOW (system_dialog),
GDK_WINDOW_TYPE_HINT_DIALOG);
label = gtk_label_new ();
/* Ensure that the dialog box is destroyed when the user responds. */
g_signal_connect_swapped (system_dialog,
response,
G_CALLBACK (gtk_widget_destroy),
system_dialog);
/* Add the label, and show everything we've added to the dialog. */
gtk_container_add (GTK_CONTAINER (GTK_DIALOG(system_dialog)-vbox),
label);
gtk_widget_show_all (system_dialog);
}
int main(int argc, char *argv[])
{
quick_message();
return 0;
}
/code
Here is my compile line: cc -o tc_system_new main.c `pkg-config --cflags
--libs gtk+-2.0 gthread-2.0 glib-2.0`
And here is my error output:
[snip]
Any suggestions?
Yes. Read the GTK+ Tutorial at http://gtk.org/tutorial/ . This way you
would know that you must call gtk_init() at the start of the program
(that's the cause for the messages), and that you need a call to
gtk_main() to do anything useful (in this case, displaying the window).
--
I must have slipped a disk -- my pack hurts!
Eduardo M KALINOWSKI
[EMAIL PROTECTED]
http://move.to/hpkb
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Destroying a GtkNotebook
Cyril Dupuit wrote: Hello, I am delopping an application on Windows XP that uses a GtkNotebook but I don't know how can I destroy it without destoying the application. At the initialization of my application, I create the menu, the toolbar and when I open a file, a GtkNotebook is created to draw some information. But, when this file is closed, I need to close this Notebook too (because the drag and drop doesn't work with a notebook). To do that, I am using g_object_unref() function but I have some warnings : GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed I think that is not the better way to destroy the notebook and to free all the associated memory. Have you any solution that can help me ? The proper way to destroy widgets is with gtk_widget_destroy(). That should work. -- I must have slipped a disk -- my pack hurts! Eduardo M KALINOWSKI [EMAIL PROTECTED] http://move.to/hpkb ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Destroying a GtkNotebook
Thank you for your help, It works fine ! Cyril - Original Message - From: Eduardo M KALINOWSKI [EMAIL PROTECTED] To: Cyril Dupuit [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org Sent: Thursday, January 10, 2008 10:03 PM Subject: Re: Destroying a GtkNotebook Cyril Dupuit wrote: Hello, I am delopping an application on Windows XP that uses a GtkNotebook but I don't know how can I destroy it without destoying the application. At the initialization of my application, I create the menu, the toolbar and when I open a file, a GtkNotebook is created to draw some information. But, when this file is closed, I need to close this Notebook too (because the drag and drop doesn't work with a notebook). To do that, I am using g_object_unref() function but I have some warnings : GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed GLib-GObject-WARNING **: instance of invalid non-instantiatable type `invalid' GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed I think that is not the better way to destroy the notebook and to free all the associated memory. Have you any solution that can help me ? The proper way to destroy widgets is with gtk_widget_destroy(). That should work. -- I must have slipped a disk -- my pack hurts! Eduardo M KALINOWSKI [EMAIL PROTECTED] http://move.to/hpkb ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Can GTK+ make use of XSHM extension from MIT
在 2008-01-10四的 17:40 +0200，Eero Tamminen写道： Hi, ext Bin Chen wrote: I am not doing very detailed profiling against this, but by comparing the frame rate in my player against using pure framebuffer implementation. The performance difference is large. If not using shared memory to transfer the decoded image data, obviously the performance can't be good in slow machine. The GTK+ can draw pixbuf and image to the drawable, is there any existing method for me to choose to force the low level gdk to use SHM extension? If you have a local connection to X server it uses that (where it helps, setting up XSHM has its own overhead). Gdk handles images internally as 32-bits, the display is 16-bits. Conversion is done automatically when needed by Gdk. Need I say more? It sounds like your use-case would be more appropriate to be done with libSDL (which also does automatic conversions, but can handle surfaces in display bit-depth if you've just asked it to do that). Ok, let me make the things clear, the content in a gdk window includes many widgets, such as label, entry, button. But from the perspective of X server, this widgets are just bitmaps with the states updated by GTK+, right? Xshm will accelerate the client to server transfer for type of Image and Pixmap, but the GTK+ use XCopyArea to update the bitmap, can XCopyArea can benefit from the Xshm? In more detail, I am using gdk_draw_image to draw an image to a gdk drawable, will this benefit the Xshm? Of course, my GTK+ built with Xshm enabled and from Xdpyinfo the Xshm is enabled in X side. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
transparents widget and back image of menu
I want to make a widget transparent ! I have no ideahow to do it! Is there anybody can help me! Ps: If i want to chang the back pixmap of a menu how to do that? Thanks a lot! Fei Zhang ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GIcon thoughts
On Wed, 2008-01-09 at 13:53 -0500, Matthias Clasen wrote: This leaves GIcon support, pixel sizes and caching. Concrete API additions could look as follows: That sounds like a good plan to me. /* Creates a new GtkIconInfo for a fixed pixbuf - this is not * really necessary as API, but it is used internally * for GFileIcons, and making it public doesn't cost us much */ GtkIconInfo * gtk_icon_info_new_for_pixbuf (GtkIconTheme *theme, GdkPixbuf*pixbuf); /* Looks up a GtkIconInfo for a GIcon and a given pixel size. * Note that looking up by pixel size still doesn't guarantee * that you actually get a pixbuf of that size; for that, see * load_at_size(). * * To look up by GtkIconSize, use gtk_icon_size_lookup_for_settings. */ GtkIconInfo * gtk_icon_theme_lookup_by_gicon (GtkIconTheme *theme, GIcon*icon, gint pixel_size); /* Loads the icon, and scales it to the given size - * some care should be taken to make load_at_size(); load() work * correctly wrt. to sizes, while still getting some caching * benefits for repeated load_at_size() with the same size */ GdkPixbuf * gtk_icon_info_load_at_size (GtkIconInfo *info, gint pixel_size); Since this does I/O it would be nice if it took a GCancellable argument. However, that might be slightly weird, given that gtk_icon_info_load_icon() doesn't. It should have a GError arg too. We can't implement the cache using toggle references for 2 reasons: a) GtkIconSize is a boxed, not an object b) toggle references only work for a single user, thus they have to be reserved for bindings, at least bindable objects. I propose to instead turn GtkIconInfo into a refcounted boxed object, and then implement the caching logic for the case that the refcount drops to one. I'm not sure this is enought, cache-wise. In many cases you'd get a GtkIconInfo, then get the pixbuf for that, save the pixbuf (e.g. in a widget) and unref the info. In fact, it seems unlikely that apps would keep the GtkIconInfo alive for long periods of time. It would be nice if we could get the GtkIconInfo cached until the last ref is dropped to the pixbuf. Of course, this is slightly harder, as GdkPixbuf is a public GObject where we can't use toggle references. We could however implement this with some help from the GdkPixbuf implementation. For instance, if we add a resurrect signal to GdkPixbuf and have the dispose() implementation emit this then the cache could connect to this and grab a ref (for some time) before finalization. (The dispose call must also detect that the object is ressurected and avoid chaining to dispose.) That might be useful for other pixbuf caches too. ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: l10n/i18n issue in gvfs [and glib]
On Jan 10, 2008 4:09 AM, Alexander Larsson [EMAIL PROTECTED] wrote: Actually, I'd really rather not have an intltool dependency in glib. This is for gvfs only. Ah, go ahead then. ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: l10n/i18n issue in gvfs [and glib]
Il giorno mer, 09/01/2008 alle 10.17 +0100, Alexander Larsson ha scritto: The fix (attached as patch) should be applied to _glib_ and is a simple: - -e s/^\[.*\] +// \ + -e /^\[.*\]/d \ I don't think that is quite right. A better rule is probably : 's/^\[[^]]*\] *//' as that strips any trailing newlines. Full patch attached. I'll test it. Now, applying this patch to glib, reverting changes in gvfs (re-add call to glib-gettextize in autogen.sh, delete mkinstalldirs and po/Makefile.in.in from svn), everything works file: you can delete and recreate a working POTFILES and you can run intltool-update LANG with no errors. But does the --from-code=UTF-8 thing get added to the xgettext call? Good question. I'll test this too. Waiting for this release, OK to use intltool in gvf? Just as workaround solution: gvfs don't need intltool 'cause all translations come from plain C source files (no .desktop, no .schemas, no .glade...) Yeah. Can you hack that up? I'm doing just now: `make distcheck` says it's OK, so I'm going to commit. ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Can I use gtk_widget_unref() to releasetthe object created by gtk_invisible_new()?
Hi, experts, I found following codes will crash in gnome 2.21 environment: ... GtkWidget *foo = gtk_invisible_new(); gtk_widget_unref(foo); ... But it works well if gtk_widget_unref() is replaced with gtk_widget_destroy(). Does that mean that we can't use gtk_widget_unref() on such object and we can only use gtk_widget_destroy() to release it? Thanks Brian ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Using GLX_EXT_texture_from_pixmap for redirected rendering of widgets/windows.
Mirco Müller a écrit : Greetings xorg/gtk+-crowd! I finally got that gtk+-widgets _ontop_ of a GL-context working and would like to get some input from anybody interested in the topic. I saw your blog post this morning, it's very cool :) Apart from toolkit-level input-redirection not working, which is likely another big chunk of work to design and implement, I am mainly interested in solving any possible GLXFBConfig-selection issues, people might run into. Sofar I've only successfully tested it under metacity/compiz on a GeForce-card and still battle to get it working on an i965. I'm also interested in this. I'm working on making Metisse work with XComposite and GLX_EXT_texture_from_pixmap and so far, I'm having trouble find simple code that actually works. Your examples come at the perfect time :) I'll let you know if I find anything that could help. Cheers -- Rémi Cardona LRI, Université Paris-Sud [EMAIL PROTECTED] [EMAIL PROTECTED] ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: GIO API review
Am Donnerstag, den 13.12.2007, 17:31 +0100 schrieb Alexander Larsson:
typedef enum {
G_FILE_QUERY_INFO_FLAGS_NONE = 0,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS = (10)
}
vs
typedef enum {
G_FILE_MONITOR_FLAGS_NONE = 0,
G_FILE_MONITOR_FLAGS_MONITOR_MOUNTS = (10)
} GFileMonitorFlags;
What do people think is the best approach here?
To my knowledge GTK+ would call them:
typedef enum { /* flags */
G_FILE_QUERY_INFO_NONE = 0,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS = (10)
} GFileQueryInfoFlags;
and
typedef enum { /* flags */
G_FILE_MONITOR_NONE = 0,
G_FILE_MONITOR_MONITOR_MOUNTS = (10)
} GFileMonitorFlags;
A problem is the doublicate monitor, so the second value should be
something like:
G_FILE_MONITOR_WATCH_MOUNTS
Ciao,
Mathias
--
Mathias Hasselmann [EMAIL PROTECTED]
http://taschenorakel.de/
signature.asc
Description: Dies ist ein digital signierter Nachrichtenteil
___
gtk-devel-list mailing list
gtk-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: How to implement a UI like Microsoft Word table by GTK??
在 2007-12-11二的 12:48 +0800，li_top写道： Hi all I have a problem to implement a UI like Microsoft Word table . That is , The UI have tables . User can combine 2or3 or more tables to one table. How to do this UI? Please help me . Thanks Regardse Tom The UI like following: __ |_|___|___|| | | | | | | | | | | |_|___|___|| | | | | | |_|___|___|| Maybe you can try embed a gtk table in another gtk table. Bin ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: g_format_file_size_for_display()
Am Dienstag, den 18.12.2007, 23:01 +0100 schrieb Sven Neumann: Hi, On Tue, 2007-12-18 at 16:45 -0500, David Zeuthen wrote: On Tue, 2007-12-18 at 14:50 -0600, Federico Mena Quintero wrote: Should this be called generically g_format_size_for_display()? You could use it for more than file sizes (free RAM in gnome-system-monitor, etc.). It's here btw http://svn.gnome.org/viewvc/glib/trunk/glib/gfileutils.c?revision=6076view=markup char *g_format_file_size_for_display (goffset size); Ideally this one needs to take another parameter indicating whether you want 1kb = 1000 bytes or 1kb = 1024 bytes. We should also decide then whether the displayed size should use MB or MiB, see http://en.wikipedia.org/wiki/Mebibyte and http://www.iec.ch/zone/si/si_bytes.htm I am all for SI units, even it writing MiB could cause some users to believe, we are too stupid to spell. Seemingly random switching between 1000 and 1024 whouldn't really help - I guess: Imagine some user wants to copy a 64 MiB file from some 1024 to some 1000 scale media: WTF doesn't this 64 MB file (64 * 2^10 bytes) fit on this 64 MB stick (64 * 10^6 bytes)? Ciao, Mathias -- Mathias Hasselmann [EMAIL PROTECTED] http://taschenorakel.de/ signature.asc Description: Dies ist ein digital signierter Nachrichtenteil ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: GTK+ Website Review - Hosting Windows Binaries
On Wed, Jan 09, 2008 at 09:44:01AM +, Martyn Russell wrote: Murray Cumming wrote: HTML is slightly more likely to be kept-up-to-date than DocBook. However, no FAQ is likely to be kept up to date unless it's very easy to edit/comment. Well, given the new site has proper CSS and HTML separation, editing the FAQ will be no harder to edit than the docbook SGML. Why not a CMS then ? No flame please. Just wondering... -- GPG-Key: 0xA3FD0DF7 - 9F73 032E EAC9 F7AD 951F 280E CB66 8E29 A3FD 0DF7 Debian User and Developer. Homepage: www.foolab.org signature.asc Description: Digital signature ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Extended Layout Summary
Am Freitag, den 21.12.2007, 11:05 +0100 schrieb Mathias Hasselmann: Am Donnerstag, den 20.12.2007, 11:46 -0500 schrieb Havoc Pennington: Third, since implementing an interface requires extra boilerplate GObject stuff, it would be convenient for authors of a custom widget if GtkWidget already did the boilerplate for them. Since for newly-written custom widgets, the recommendation would be to always support extended layout. I don't see the boilerplate savings you talk about? As far as I understand GObject interfaces, you always need this this single-line boilerplate for overriding interface methods: G_DEFINE_TYPE_WITH_CODE (MamanBar, maman, GTK_TYPE_WIDGET, G_IMPLEMENT_INTERFACE (GTK_TYPE_IFACE, maman_bar_iface_init)) Not if GtkWidget already implements GtkExtendedLayout-get_min_size() like this: GTK_WIDGET_GET_CLASS(instance)-get_min_size. Then you could easily override the implementation in class_init(). I think this was what Havoc meant. Regards, Sven ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Can I use gtk_widget_unref() to releasetthe object created by gtk_invisible_new()?
Hi, The caller doesn't own the returned reference in case of any gtk_*_new functions, but the results are floating references (they are removed once somebody calls gtk_object_sink). This is different from normal GObjects. So, unreffing the returned value causes practically a double free. gtk_widget_destroy in turn runs dispose, ie. asks widget to drop references to other widgets. Dropping external references usually causes somebody else to drop the last reference to your widget, so it efectively gets destroyed. In case of toplevels some global window list is holding the reference. Calling gtk_widget_destroy without taking ownership a a widget is usually a bug that causes a memory leak, but this is not the case here, since we are talking about a toplevel. Cheers, -Markku- On Wed, 2008-01-09 at 17:39 +0800, Brian Lu wrote: Hi, experts, I found following codes will crash in gnome 2.21 environment: ... GtkWidget *foo = gtk_invisible_new(); gtk_widget_unref(foo); ... But it works well if gtk_widget_unref() is replaced with gtk_widget_destroy(). Does that mean that we can't use gtk_widget_unref() on such object and we can only use gtk_widget_destroy() to release it? Thanks Brian ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
