Originally Posted by jstokes

Hi,

I've come back to this after a while, sorry for abandoning the thread!

I've only tested this in Scratchbox (strace etc. on personalisation_app worked wonders ), but hopefully, it should work for refreshing the theme. If it doesn't work, you may have to switch to another theme because the underlying components realise that you're reapplying the same theme; if that's the case, I don't know what to do

PHP Code:

#include <stdlib.h>
#include <string.h>
#include <libgen.h>
#include <X11/Xatom.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>

struct _theme_info
{
    gchar *base_path;
    gchar *theme_name;
};

static gboolean current_theme_info (struct _theme_info *theme_info)
{
    #define THEME_DIR "/etc/hildon/theme"
    #define INDEX_THEME_FILE G_DIR_SEPARATOR_S "index.theme"
    #define STD_INDEX_LOC THEME_DIR INDEX_THEME_FILE

    gboolean retval = FALSE;
    gchar *linkdest1 = NULL, *linkdest2 = NULL;
    GKeyFile *theme_key = g_key_file_new();

    if ((!g_file_test (STD_INDEX_LOC, G_FILE_TEST_EXISTS)) || (!g_key_file_load_from_file (theme_key, STD_INDEX_LOC, G_KEY_FILE_NONE, NULL)) || !(theme_info->theme_name = g_key_file_get_string (theme_key, "Desktop Entry", "Name", NULL)))
        goto getout;

    linkdest1 = g_file_read_link (THEME_DIR, NULL);
    if (!linkdest1) goto getout;

    linkdest2 = g_file_read_link (linkdest1, NULL); /* Is it a folder that's symlinked to another, like: default->alpha? */
    theme_info->base_path = g_path_get_basename (linkdest2 ? linkdest2 : linkdest1);

    retval = theme_info->base_path != NULL;

getout:
    g_free (linkdest2);
    g_free (linkdest1);
    g_key_file_free (theme_key);

    return retval;

#undef STD_INDEX_LOC
#undef INDEX_THEME_FILE
#undef THEME_DIR
}

static gboolean update_symbolic_link (const gchar *newtheme)
{
    gboolean retval = FALSE;

    if (newtheme)
    {
        gint exit_status;
        gchar *cmdline;

        cmdline = g_strdup_printf ("%s %s/%s", "/usr/bin/personalisation", "/usr/share/themes", newtheme);
        retval = g_spawn_command_line_sync (cmdline, NULL, NULL, &exit_status, NULL) || exit_status != 0;
        g_free (cmdline);
    }
    
    return retval;
}

static void send_refresh_signal (void)
{
    GdkEventClient event;

    event.type = GDK_CLIENT_EVENT;
    event.send_event = TRUE;
    event.window = NULL;
    event.message_type = gdk_atom_intern ("_GTK_READ_RCFILES", FALSE);
    event.data_format = 8;

    gdk_event_send_clientmessage_toall ((GdkEvent *) &event);
}

static void refresh_matchbox (const gchar *base_path)
{
    Display *disp = XOpenDisplay (getenv ("DISPLAY"));
    Atom _MB_THEME = XInternAtom (disp, "_MB_THEME", False);

    if (_MB_THEME != None)
    {
        Window root = DefaultRootWindow(disp);
        XChangeProperty (disp, root, _MB_THEME, XA_STRING, 8, PropModeReplace, (unsigned char*) base_path, strlen (base_path));

        Atom _MB_COMMAND = XInternAtom (disp, "_MB_COMMAND", False);
        if (_MB_COMMAND != None)
        {
            XEvent ev = { '\0', };

            ev.xclient.type = ClientMessage;
            ev.xclient.window = root;
            ev.xclient.message_type = _MB_COMMAND;
            ev.xclient.format = 8;
            ev.xclient.data.l[0] = 1;
            
            XSendEvent(disp, root, False, SubstructureRedirectMask|SubstructureNotifyMask, &ev);
        }
        
        XSync (disp, True);
    }
    
    XCloseDisplay (disp);
}

int main (int argc, char *argv[])
{
    struct _theme_info theme_info;
    gtk_init (&argc, &argv);
    
    g_assert (current_theme_info(&theme_info));

    if (!update_symbolic_link (theme_info.base_path))
        return 1; /* Fails in my SB - "invalid cross-device link */

    GtkSettings *settings = gtk_settings_get_default();
    gtk_settings_set_string_property (settings, "gtk-theme-name", theme_info.theme_name, basename(argv[0]));
    //g_object_notify (G_OBJECT (settings), "gtk-theme-name");
    gtk_rc_reset_styles (settings);

    send_refresh_signal();

    gchar *maemo_launcher_pid_s;
    if (g_file_get_contents ("/tmp/maemo-launcher.pid", &maemo_launcher_pid_s, NULL, NULL))
    {
        pid_t maemo_launcher_pid = (pid_t) atoi (maemo_launcher_pid_s);
        if (maemo_launcher_pid > 0) kill (maemo_launcher_pid, SIGHUP);
        g_free (maemo_launcher_pid_s);
    }
    
    refresh_matchbox (theme_info.base_path);

    g_free (theme_info.base_path);
    g_free (theme_info.theme_name);

    return 0;
} 


Just using gtk+-2.0 for pkg-config works to compile it

Originally Posted by d-iivil

Thanks! Could you please do me one more favour since I'm pretty n00b with compiling non-qt stuff; how do I compile this in scratchbox?

Originally Posted by jstokes

I've been using the command gcc file.c -o program $(pkg-config --cflags --libs gtk+-2.0) -Wall to compile it. You can optionally add "x11 gdk-x11-2.0" before gtk+2.0 in the pkg-config line but it's not technically required as gtk+2.0 will automatically include them

Originally Posted by d-iivil

Umm... stupid guestion again: what's the usage? Tried to understand the source and give the program arguments like "beta" "alpha" etc but it didn't actually do anything.

Originally Posted by jstokes

There are no arguments.

It just tries to get the current theme details (last part of path and name) and give those details to the bits of Maemo that the personalisation_app does. Either it's doing everything and Maemo's refusing to do anything because it's the same theme (I know the program works to change themes because I first ran "personalisation" with a path to a different theme and running the program afterwards changed the screen itself) or because it's ending prematurely because running "personalisation" is failing. What does running "echo $?" directly after the program print? If it's 0, then the program's done what it can to try and get Maemo to refresh the theme. If it's 1, then try running the program as root with run-standalone.sh

Originally Posted by d-iivil

Seems to work actually pretty well! It reloads changed icon theme etc @ app launcher. Will definitely use this with TC if it's ok with you?

Originally Posted by nicolai

Have you tried matchbox-remote?
For example
/usr/bin/personalisation /usr/share/themes/beta
/usr/bin/matchbox-remote -t beta
switches to the theme "beta".

Originally Posted by jstokes

Great!

Sure, no problems but I must stress that the ideas were stolen from a Nokia app

Originally Posted by nicolai

@d-iivil
Have you tried this:


I thought it would have solved the icon reloading problem in qt-apps.