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#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <glib.h>
gboolean running;
GTimer *timer;
GtkWidget *timer_display;
gboolean update_progress_bar (void) {
char output[100];
gulong gulong;
gdouble time_elapsed;
time_elapsed = g_timer_elapsed (timer, &gulong);
sprintf(output, "%.2f", time_elapsed);
gtk_label_set_text(GTK_LABEL(timer_display), output);
return TRUE;
}
gboolean keypress (GtkWidget *widget, GdkEventKey *event) {
guint(g) = event->keyval;
if((g == GDK_KEY_space)) {
if(running == FALSE) {
g_timer_start(timer);
running = TRUE;
return TRUE;
} else {
g_timer_stop(timer);
running = FALSE;
return TRUE;
}
}
return FALSE;
}
int main (int argc, char *argv[]) {
GtkWidget *window, *box;
gtk_init(&argc, &argv);
timer_display = gtk_label_new("");
box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5);
gtk_box_pack_start(GTK_BOX (box), timer_display, TRUE, TRUE, 5);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_container_add(GTK_CONTAINER (window), box);
gtk_widget_show_all(window);
timer = g_timer_new();
g_timer_stop(timer);
g_timeout_add_full(G_PRIORITY_HIGH, 50, (GSourceFunc) update_progress_bar, NULL, NULL);
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(keypress), window);
gtk_main();
g_timer_destroy(timer);
}
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