[maemo-developers] [maemo-developers] gtk-infoprint

[From: Laszlo T.]

2006/5/19, Eero Tamminen <eero.tamminen at movial.fi>:
>
> Hi,
>
> > gtk_banner_show_animation(app, "Searching");
> > slow_searching_function();
> > gtk_banner_close(app);
>
> Are you calling the gtk mainloop (or otherwise letting the widget
> process events) occasionally from the slow_searching_function()
> so that:
> - banner can process the expose events and draw itself
> - animation can refresh itself
> ?
>
> Note that it's a very bad idea to thread the UI code, because that will
> make debugging any bugs you have MUCH harder.  If you want to use threads,
> you should thread only well-isolated functionality (e.g. reading data
> from a socket to a buffer) which interactions with the rest of the your
> and libraries code you know very well (at least concerning the thread
> safety).
>
>
>         - Eero
>
> _______________________________________________
> maemo-developers mailing list
> maemo-developers at maemo.org
> https://maemo.org/mailman/listinfo/maemo-developers
>



Hello,



/* For another example: */



#include <hildon-widgets/hildon-app.h>
#include <hildon-widgets/hildon-appview.h>
#include <hildon-widgets/gtk-infoprint.h>
#include <gtk/gtk.h>



static gint infoprint_type = 1;


/* Callback to show infoprints */
void show_infoprint(GtkButton * widget, HildonApp * app)
{
    switch (infoprint_type) {
    case 1:  /* no animation, only sleep */
/*       gtk_infoprint(GTK_WINDOW(app), "Hi there!"); */
        gtk_banner_show_animation(GTK_WINDOW(app), "Hi there!");
    sleep(5);
    gtk_banner_close( GTK_WINDOW(app) );
        break;

    case 2: /* animation AFTER the sleep, I don't understand. */
/*        gtk_infoprint_with_icon_stock(GTK_WINDOW(app),
                                      "This is save icon",
GTK_STOCK_SAVE);*/
        gtk_banner_show_animation(GTK_WINDOW(app), "Hi there!");
    sleep(5);
        break;

    case 3: /* close the banner */
/*        gtk_banner_show_bar(GTK_WINDOW(app), "Info with progress bar");
        gtk_banner_set_fraction(GTK_WINDOW(app), 0.2); */
    gtk_banner_close( GTK_WINDOW(app) );
        break;

    case 4:
        /* With fifth click, end the application */
        gtk_main_quit();
    }

    /* Increase the counter */
    infoprint_type++;
}





/* Main application */
int main(int argc, char *argv[])
{
    /* Create needed variables */
    HildonApp *app;
    HildonAppView *appview;
    GtkWidget *main_vbox;
    GtkWidget *button1;

    /* Initialize the GTK. */
    gtk_init(&argc, &argv);

    /* Create the hildon application and setup the title */
    app = HILDON_APP(hildon_app_new());
    hildon_app_set_title(app, "App Title");
    hildon_app_set_two_part_title(app, TRUE);

    /* Create HildonAppView and set it to HildonApp */
    appview = HILDON_APPVIEW(hildon_appview_new("AppView Title"));
    hildon_app_set_appview(app, appview);

    /* Add vbox to appview */
    main_vbox = gtk_vbox_new(FALSE, 0);
    gtk_container_add(GTK_CONTAINER(appview), main_vbox);

    /* Add button to vbox */
    button1 = gtk_button_new_with_label("Show Info");
    gtk_box_pack_start(GTK_BOX(main_vbox), button1, FALSE, TRUE, 0);

    /* Add signal listener to button */
    g_signal_connect(G_OBJECT(button1), "clicked",
                     G_CALLBACK(show_infoprint), app);

    /* Begin the main application */
    gtk_widget_show_all(GTK_WIDGET(app));
    gtk_main();

    /* Exit */
    return 0;
}


Thanks,
Laci
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