#include <stdio.h>
#include <sys/time.h>
#include <gtk/gtk.h>

/* Define this to shut off the printfs (for profiling). */
#define QUIET

/* Number of elements to put in the list. */
static int n = 1024;

/* Number of times to draw. */
static int nd = 256;

static int timediff( struct timeval *large, struct timeval *small )
{
    return (   ( ( large->tv_sec * 1000 * 1000 ) + large->tv_usec )
             - ( ( small->tv_sec * 1000 * 1000 ) + small->tv_usec ) );
}

int main (int argc, char **argv)
{
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;
    GtkTreeIter iter;
    GtkListStore *store;
    GtkWidget *scrolled;
    GtkWidget *tree;
    GtkWidget *window;
    int i;

    gtk_init (&argc, &argv);
    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    g_signal_connect (G_OBJECT (window), "destroy",
                      G_CALLBACK (gtk_main_quit), 0);
    g_signal_connect (G_OBJECT (window), "delete_event",
                      G_CALLBACK (gtk_main_quit), 0);

    scrolled = gtk_scrolled_window_new (0, 0);
    store = gtk_list_store_new (7,
                                G_TYPE_STRING,
                                G_TYPE_STRING,
                                G_TYPE_STRING,
                                G_TYPE_STRING,
                                G_TYPE_STRING,
                                G_TYPE_STRING,
                                G_TYPE_STRING);
    tree = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store));

    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column1", renderer, "text", 0, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column2", renderer, "text", 1, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column3", renderer, "text", 2, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column4", renderer, "text", 3, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column5", renderer, "text", 4, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column6", renderer, "text", 5, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column7", renderer, "text", 6, 0);
    gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_column_set_min_width (column, 40);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);

    gtk_container_add (GTK_CONTAINER (scrolled), tree);
    gtk_container_add (GTK_CONTAINER (window), scrolled);

    for (i = 0; i < n; i++) {
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter,
                            0, "this",
                            1, "works",
                            2, "great",
                            3, "and",
                            4, "is",
                            5, "super",
                            6, "fast",
                            -1);
    }

    gtk_widget_set_size_request (window, 400, 400);
    gtk_widget_show_all (window);

    while (gtk_events_pending ()) gtk_main_iteration ();

    for (i = 0; i < nd; i++) {
        struct timeval before, after;

        gtk_widget_queue_draw (tree);

#ifndef QUIET
        gettimeofday (&before, 0);
#endif
        gdk_window_process_all_updates ();
#ifndef QUIET
        gettimeofday (&after, 0);
        fprintf (stderr,
                 "Process all updates took %d usec (%.2f ms).\n",
                 timediff (&after, &before),
                 ((double) timediff (&after, &before)) / 1000.0);
#endif
    }

    return 0;
}