Re: Capture console app output into texview?
Hi,
thanks a lot for that explanation. I'll try to combine this into the
code from Dov.
Till
Am Samstag 21 November 2009 schrieb Artur Galjamov:
Hi,
After exec(), child clib's startup routine determines buffering mode for
stdout (i.e. calls fdopen(1, w+)). You can setup pseudo-terminal instead
of pipe, to make child's stdout line-buffered.
optimistic snippet:
=
#include fcntl.h
#include stdio.h
#include stdlib.h
#include unistd.h
int
main(int argc, char *argv[])
{
int master_fd, slave_fd;
FILE*master_file, *slave_file;
char buf[80], *device;
master_fd = posix_openpt(O_RDWR | O_NOCTTY);
grantpt(master_fd);
unlockpt(master_fd);
slave_fd = open(device = ptsname(master_fd), O_RDWR | O_NOCTTY);
printf(slave device: %s\n, device);
master_file = fdopen(master_fd, r);
slave_file = fdopen(slave_fd, w+);
if (fork()) {
fclose(slave_file);
while (fgets(buf, sizeof(buf), master_file))
printf(parent got: %s, buf);
} else {
// child
fclose(master_file);
for (int i = 0; i 500; i++) {
sleep(1);
fprintf(slave_file, child's data (%d)\n, i);
}
}
return 0;
}
=
21.11.09, 09:39, Till Harbaum / Lists li...@harbaum.org:
Hi,
thanks again for that hint. Unfortunately adding
/* switch to line buffered mode */
if(setvbuf(fh, NULL, _IOLBF, 0))
perror(setvbuf(_IOLBF));
to the program posted by Dov doesn't change anything.
Are there limitations on changing the buffer mode? E.g.
only the transmitter side can do that?
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Capture console app output into texview?
Hi, thanks again for that hint. Unfortunately adding /* switch to line buffered mode */ if(setvbuf(fh, NULL, _IOLBF, 0)) perror(setvbuf(_IOLBF)); to the program posted by Dov doesn't change anything. Are there limitations on changing the buffer mode? E.g. only the transmitter side can do that? Till Am Freitag 20 November 2009 schrieb David Nečas: Terminals are normaly line-buffered while pipes are block-buffered, see setvbuf(3) for some info. So the buffering behaviour differs depending on where the output goes. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Capture console app output into texview?
,
terminator_pos,
error)) == G_IO_STATUS_NORMAL)
{
job_add_to_text_viewer(job_data,
str_return);
g_free(str_return);
}
g_io_channel_unref(gh);
pclose(fh);
job_add_to_text_viewer(job_data,
Job done!);
g_mutex_unlock(job_data-mutex_to_run);
g_thread_exit(NULL);
if (job_data)
job_data_free(job_data);
return NULL;
}
// Callback for the run button
void cb_clicked_run(GtkWidget *widget,
gpointer user_data)
{
const gchar *cmd = gtk_entry_get_text(GTK_ENTRY(w_entry_cmd));
GError *error = NULL;
printf(Run %s\n, cmd);
// create a thread that will run the external command
// tbd...
JobData *job_data = job_data_new(cmd, mutex_one_job_at_a_time);
g_thread_create((GThreadFunc)thread_worker, job_data, FALSE, error);
if (error) {
printf(%s\n, error-message);
g_error_free(error);
}
}
void create_gui()
{
GtkWidget *w_top = gtk_window_new(GTK_WINDOW_TOPLEVEL);
GtkWidget *w_vbox = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(w_top), w_vbox);
GtkWidget *w_scrolled_win = gtk_scrolled_window_new(NULL, NULL);
gtk_widget_set_size_request(w_scrolled_win, 500, 400);
gtk_box_pack_start(GTK_BOX(w_vbox), w_scrolled_win,
TRUE, TRUE, 0);
w_text_view = gtk_text_view_new();
gtk_container_add(GTK_CONTAINER(w_scrolled_win),
w_text_view);
// An hbox with an entry for the command to run
GtkWidget *w_hbox = gtk_hbox_new(FALSE, 0);
gtk_box_pack_start(GTK_BOX(w_vbox), w_hbox,
FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(w_hbox), gtk_label_new(Command:),
FALSE, FALSE, 0);
w_entry_cmd = gtk_entry_new();
gtk_entry_set_text(GTK_ENTRY(w_entry_cmd),
perl -e '$|++; for $i (0..10) { print \$i\\n\;
sleep 1 }');
gtk_box_pack_start(GTK_BOX(w_hbox), w_entry_cmd,
TRUE, TRUE, 0);
GtkWidget *w_button_run = gtk_button_new_with_label(Run);
gtk_box_pack_start(GTK_BOX(w_hbox), w_button_run,
FALSE, FALSE, 0);
g_signal_connect(w_button_run, clicked,
G_CALLBACK(cb_clicked_run), NULL);
// Finally quit button
GtkWidget *w_button_quit = gtk_button_new_with_label(Quit);
gtk_box_pack_start(GTK_BOX(w_vbox), w_button_quit,
FALSE, FALSE, 0);
g_signal_connect(w_button_quit, clicked,
G_CALLBACK(gtk_main_quit), NULL);
gtk_widget_show_all(w_top);
}
int main(int argc, char **argv)
{
// init threads
g_thread_init(NULL);
gtk_init(argc, argv);
// Only allow running one command at a time
mutex_one_job_at_a_time = g_mutex_new();
create_gui();
gtk_main();
exit(0);
}
On Fri, Nov 20, 2009 at 10:38, Emmanuel Rodriguez
emmanuel.rodrig...@gmail.com wrote:
On Thu, Nov 19, 2009 at 10:11 PM, Till Harbaum / Lists li...@harbaum.org
wrote:
Hi,
i am trying to run a text mode application in the background of my gtk
one
and display its output in a textview. I know this is supposed to be done
using g_spawn_async_with_pipes and then link to the output via
g_io_add_watch. I even got something that sort of works, but the output
is
very much delayed and comes in chunks and worse, the CPU load is at max
while and after i run my code.
Are there any examples for doing this? There must be many programs doing
something similar to run e.g. some little helper program or similar.
Can you consider using the VteTerminal[1] widget? This is the same
terminal
widget used in gnome-terminal and in Ubuntu/Debian graphical frontends to
dpkg. It lets you embed a ternimal that you can bind to any program, you're
not forced to bind it to a shell.
VteTerminal will take care of monitoring your process and grabbing all
output for you. The only drawback is that the widget doesn't work on win32.
[1] http://library.gnome.org/devel/vte/unstable/VteTerminal.html
Emmanuel Rodriguez
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Capture console app output into texview?
Hi, i am trying to run a text mode application in the background of my gtk one and display its output in a textview. I know this is supposed to be done using g_spawn_async_with_pipes and then link to the output via g_io_add_watch. I even got something that sort of works, but the output is very much delayed and comes in chunks and worse, the CPU load is at max while and after i run my code. Are there any examples for doing this? There must be many programs doing something similar to run e.g. some little helper program or similar. Regards, Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
How to do a graphic overlay?
Hi, i'd like to do some graphic overlay. In this particular case i'd like to put two buttons on top of a goocanvas. I tried to hook into the expose event and just draw something to the gdkwindow of the widget. That simply doesn't work. It works with a gtkdrawingarea, but not with the goocanvas. What can prevent me from drawing to the gdkwindow of a widget? I also tried to use a seperate window, but that's pretty difficult to handle since you e.g. have to move those windows when you move the main window etc etc. So just painting their seems simpler ... but unfortunately doesn't work Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
How to adjust the spacing around an icon in a button?
Hi, i have buttons with icons inside. For some reason the button is slightly bigger than it needs to be. Where do i adjust the border that's drawn around an icon in a button? Also this only affects the height. Is there some kind of preferred vertical size of a button? Regards, Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: compile 2 libs together
Hi, Am Dienstag 20 Januar 2009 schrieb frederico schardong: But now I must use allegro and libglade together. Why not: gcc -o main main.c `pkg-config --cflags --libs libglade-2.0` `allegro-config --libs` Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Wait for gtk events with select?
Hi, is there a way to wait for gtk events via some file descriptor given to a select call? I am porting an application to gtk that calls some gimme_input function every now and then and want's me to do some waiting for net sockets there. Now i'd like to use the same select call i am using for the network sockets also to wait for gtk events. Is this possible? What's the name of the file descriptor to use? Thanks, Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkProgress demo from tutorial not working on ubuntu hardy?
Hi, weird: the same code works as expected on the nokia n810. My problem with the fact the changing the stausbar backround color also only happens on the PC and works as expected on the n810. How comes? Why are there at least two things not working as advertised on a stock ubuntu hardy unit but on the heavily customized gtk framework delivered with the nokia n810? Till Am Mittwoch 10 Dezember 2008 schrieb Till Harbaum: Hi, i can't manage to get the activity mode of the progress bar to work on a ubuntu hardy running gtk 2.12.9 Even the example from http://library.gnome.org/devel/gtk-tutorial/stable/x831.html just makes the progressbar stop when i activate Activity mode. I was expecting it to show this blob bouncing forth and back, but that doesn't happen. Is/was activity mode broken? I'll try this on a different machine. Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Changing gtkstatusbar background color
Hi,
sorry to bother you again with a question. I am trying to set the background
color of a
statusbar. I have found several postings in the net indicating that this is
just a matter
of adding the statusbar to an eventbox and setting the background color of that.
However ... that just doesn't work. The following code shows a statusbar and
for a fraction of
a second i even see it having a red background. But after that it returns to
its default
color and stays that way. What am i doing wrong?
Thanks,
Till
#include gtk/gtk.h
GtkWidget *statusbartest(void) {
GdkColor color;
gdk_color_parse(red, color);
GtkWidget *eventbox = gtk_event_box_new();
GtkWidget *statusbar = gtk_statusbar_new();
gtk_container_add(GTK_CONTAINER(eventbox), statusbar);
gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, color);
gtk_statusbar_push(GTK_STATUSBAR(statusbar),
gtk_statusbar_get_context_id(GTK_STATUSBAR(statusbar), Msg),
This message is meant to have a red background);
return eventbox;
}
int main(int argc, char *argv[]) {
gtk_init (argc, argv);
GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 500, 50);
gtk_container_add(GTK_CONTAINER(window), statusbartest());
g_signal_connect(G_OBJECT(window), destroy, G_CALLBACK(gtk_main_quit),
NULL);
gtk_widget_show_all(GTK_WIDGET(window));
gtk_main();
return 0;
}
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Ok button key binding
Hi, Am Freitag 14 November 2008 schrieb Garth's KidStuff: The one subtle point for me was that any Gtk::Entry controls in the dialog ate the return unless I did the following: Gtk::Entry m_IDC_ADD_PAGE_TITLE; ... m_IDC_ADD_PAGE_TITLE.set_activates_default(true); // Enter while editing should activate default OK Thanks, that was my problem! This works in those dialogs that have entries. Now i am still facing a similar issue with dialogs containing a gtktreeview based list. Pressing return selects an item in that list, but not the default dialog button. Any hint how to cope with the treeview? Unfortunately it doesn't have a set_activates_default() function ... Thanks again, Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Ok button key binding
Hi, i just noticed, that there seems to be some automatic key binding for the Escape key to the cancel/No/Close buttons of gtkdialogs. But there doesn't seem to be a binding for Open/Yes/Ok which i expected to be the Return key. Are these bindings documented somewhere? I can't find anything. Also how do i make the Ok button to react on the return key. Thanks, Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
A dialog as small as possible, except it needs scrolling
Hi, i have the following problem: I have a dialog with variable contents. Since this content may even exceed the screen size (which isn't too difficult on a nokia n810) i have put the entire content into a scrolled window. My problem now is the dialog size. I want the dialog as small as possible but as big as necessary. Unfortunately the scrolled window causes the dialog to not use the available screen space. I want the scrolled window to be very small if possible but to expand if the contents get bigger and as long as there's screen space available. Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Howto correctly generate expandable void?
Hi, Am Samstag 25 Oktober 2008 schrieb James Scott Jr: -- vbutton_box(x,y,z) -- postioned using end Argh ... i can't believe i never realized that there's also a gtk_box_pack_end. Thanks for pointing this out :-) Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Howto correctly generate expandable void?
Hi, i have a vbox with a bunch of buttons. I want some of them to appear at the top and some of them at the bottom. The buttons should not be expanded and the space between them should also not expand except the space between the two groups. Something like this: (a) (b) (c) (x) (y) (z) How is this done correctly without having some invisible item i can place between both groups and which is set to expand/fill? Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Passing Struct to g_signal_connect
Hi,
you have to make sure that the parameters of your callback function
exactly match what's been described for this particular event. In your
case your have to check the clicked event for a GtkButton which gives
us:
void user_function(GtkButton *button, gpointer user_data)
So this is how your callback function should look like:
void on_button2_clicked(GtkButton *button, struct allStructs *by_ptr)
Your struct should be the _second_ parameter and not the first (any only)
one your made it. What you did is: You got a pointer to the GtkButton structure
of your button and used _that_ as a pointer to your own struct. You
are likely messing up the Button structure ...
This is one ugly thing with the C bindings and the fact that everything
is just casted by this G_CALLBACK() macro. That way the compiler isn't
able to check these things and errors like yours happen. And these can
be very nasty bugs since they cause people to write to memory they
are not supposed to write to. A classic door for hackers ...
Till
Am Sonntag 19 Oktober 2008 schrieb beginner.c:
I need to pass a struct using g_signal_connect, but the issue I'm having is
that I can't alter the elements of the struct within the called function
e.g.
void on_button2_clicked (struct allStructs *by_ptr)
{
gtk_label_set_text ((GtkLabel*)by_ptr-widgets.label, whatever);
}
main
{
blah blah
struct allStructs baseStruct;
g_signal_connect (G_OBJECT(baseStruct.widgets.nextButton), clicked,
G_CALLBACK (on_button2_clicked), baseStruct);
}
Any idea's? If I pass this struct to any other function I have no problem
performing functions like in the callback. For some reason, I can't in the
callback.
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Where to ask about gnomecanvas? (How to get all items via gnome_canvas_get_item_at?)
Hi, is this the right place to ask a question about gnomecanvas? I am using gnomecanvas for a mapping application (an openstreetmap editor for maemo). Sometimes items are stacked (e.g. a building is a polygon which may be placed in some some park which also is a polygon). The problem is that i need to get access to all things located on a position, but gnome_canvas_get_item_at only gives me only the top item. How do i get access to all items? The building in the example above may e.g. be drawn prior to the park and thus not be the topmost item and thus basically not accessible. I could of course re-order the items, but my program basically has no knowledge about buildings and the like. Everything is just a polygon (or a closed way in openstreetmap). So i wouldn't know which thing to order in which way. Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
How to make gtktextview automatically scroll to cursor?
Hi, i have simple problem but hakf an hour of googling didn't give me an answer: How do i make an editable gtktextview inside a scrolledwindow to automatically scroll to the cursor position? This must be a very basic issue and i am sure it is answered in various simple examples. But i just don't find one ... Till ___ 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 make gtktextview automatically scroll to cursor?
Hi,
coincidentally that's also a thing a needed for my program (a geocaching
application for hildon/maemo named goxview).
And thanks for that routine, it works perfectly!
Still no hint for the textview. I really can't believe that there's nothing like
this in any tutorial. But all tutorials dealing with textviews inside a scrolled
window do this with non-editable textviews ...
Thanks again,
Till
Am Montag 19 Mai 2008 schrieb [EMAIL PROTECTED]:
On Monday 19 May 2008 13:23:39 Till Harbaum / Lists wrote:
Hi,
i have simple problem but hakf an hour of googling didn't give me an answer:
How do i make an editable gtktextview inside a scrolledwindow to
automatically
scroll to the cursor position?
This must be a very basic issue and i am sure it is answered in various
simple
examples. But i just don't find one ...
Till
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Hi,
maybe this will help you:
if (autoscroll) {
model = gtk_tree_view_get_model(GTK_TREE_VIEW(tree));
path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(tree), path, NULL,
TRUE, 0.0, 0.0);
gtk_tree_path_free(path);
}
Ciao,
ZZ
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
___
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 make gtktextview automatically scroll to cursor?
Hi, to answer my own question (i had a look at the maemopad editor source code to get my answer): Never use gtk_scrolled_window_add_with_viewport to put the textview into the scrolled window. Instead use gtk_container_add as the textview can be placed directly in the scrolled window. And in fact it _must_ be placed directly to make the scrollbars work as expected. Till Am Montag 19 Mai 2008 schrieb Till Harbaum / Lists: Hi, i have simple problem but hakf an hour of googling didn't give me an answer: How do i make an editable gtktextview inside a scrolledwindow to automatically scroll to the cursor position? This must be a very basic issue and i am sure it is answered in various simple examples. But i just don't find one ... Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Solved: How to make a gtktreeview column flexible?
Hi, in have solved this problem. Here's the answer for reference: Instead of using gtk_tree_view_insert_column_with_attributes to insert a column, one might use seperate calls to gtk_tree_view_column_new_with_attributes and gtk_tree_view_insert_column as this give us an explicit reference to the column. Thus one can use gtk_tree_view_column_set_expand(TRUE) on that column and voila ... the column scales nicely with the window width. Till Am Freitag 25 April 2008 schrieb Till Harbaum / Lists: Hi, i have a gtktreeview filling the complete width of a window. Now i want the view to always use the full width. I therefore want the middle column (a text column) to be flexible. I want it to be as wide as possible for any given window width. So if you make the window wider i want this column to become wider. If i just enable ellipsis in the columns text renderer the column gets very small and only a fraction of the window width is used. If i make it a fixed width it's exactly that: fixed width. How do i make the column always use a much space as possible but never more than available? Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
How to make a gtktreeview column flexible?
Hi, i have a gtktreeview filling the complete width of a window. Now i want the view to always use the full width. I therefore want the middle column (a text column) to be flexible. I want it to be as wide as possible for any given window width. So if you make the window wider i want this column to become wider. If i just enable ellipsis in the columns text renderer the column gets very small and only a fraction of the window width is used. If i make it a fixed width it's exactly that: fixed width. How do i make the column always use a much space as possible but never more than available? Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Still the multi-textview in scrolled win in notebook problem ...
Hi, i am still fighting with a strange problem. Some things need to be combined to trigger it: - I have a tabbed notebook - One initially not visible (read: not the first) tab contains a scrolled win - Inside this win are mutliple textviews (or gtkhtml views) in a vbox or table - At least one of these texts contains a newline Then the textviews will initially not display the entire text but only the part up to the first newline in the text. Once i click into the text everything is corrected and the entire text becomes visible. If any of the above things isn't there (e.g. no notebook or not multiple textviews) everything displays fine. But if all four things come together the text is truncated after the first newline. This is even worse with a gtkhtml view as this isn't even updated if i cklick into the view. I have attached what i think is the shortest program demonstrating the problem. I am seeing this problem with gtk 2.12.0 under ubuntu as well as with gtk 2.10.12 under maemo/hildon on a n810. Please have a look at the attached example. Till ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
