tests/barf.c

   1 #include <gtk/gtk.h>
   2
   3 static gboolean
   4 quit()
   5 {
   6         gtk_main_quit();
   7         return TRUE;
   8 }
   9
  10 static void
  11 barf(GtkButton *button, GtkTextBuffer *buffer)
  12 {
  13         GtkTextIter end;
  14         gtk_text_buffer_get_end_iter(buffer, &end);
  15
  16         gtk_text_buffer_move_mark_by_name(buffer, "pager_position", &end);
  17
  18         gchar *loremipsum;
  19         g_file_get_contents("loremipsum.txt", &loremipsum, NULL, NULL);
  20         gtk_text_buffer_insert(buffer, &end, loremipsum, -1);
  21         g_free(loremipsum);
  22 }
  23
  24 static void
  25 after_insert(GtkTextBuffer *buffer, GtkTextIter *location, gchar *text, gint len, GtkTextView *textview)
  26 {
  27         while(gtk_events_pending())
  28                 gtk_main_iteration();
  29
  30         GdkRectangle pagerpos, endpos, visiblerect;
  31         GtkTextIter pager, end;
  32         gtk_text_buffer_get_iter_at_mark(buffer, &pager, gtk_text_buffer_get_mark(buffer, "pager_position"));
  33         gtk_text_buffer_get_end_iter(buffer, &end);
  34
  35         gtk_text_view_get_iter_location(textview, &pager, &pagerpos);
  36         gtk_text_view_get_iter_location(textview, &end, &endpos);
  37         gtk_text_view_get_visible_rect(textview, &visiblerect);
  38
  39         g_printerr("View height = %d\n", visiblerect.height);
  40         g_printerr("End - Pager = %d\n", endpos.y - pagerpos.y);
  41 }
  42
  43 int
  44 main(int argc, char **argv)
  45 {
  46         gtk_init(&argc, &argv);
  47
  48         GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  49         gtk_widget_set_size_request(window, 400, 400);
  50         GtkWidget *button = gtk_button_new_with_label("Barf");
  51         GtkWidget *scrolledwindow = gtk_scrolled_window_new(NULL, NULL);
  52         GtkWidget *textview = gtk_text_view_new();
  53         gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(textview), GTK_WRAP_WORD_CHAR);
  54         GtkWidget *vbox = gtk_vbox_new(FALSE, 6);
  55
  56         gtk_container_add(GTK_CONTAINER(scrolledwindow), textview);
  57         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
  58         gtk_box_pack_start(GTK_BOX(vbox), scrolledwindow, TRUE, TRUE, 0);
  59         gtk_container_add(GTK_CONTAINER(window), vbox);
  60         gtk_widget_show_all(window);
  61
  62         GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview));
  63         g_signal_connect_after(buffer, "insert-text", G_CALLBACK(after_insert), textview);
  64
  65         GtkTextIter end;
  66         gtk_text_buffer_get_end_iter(buffer, &end);
  67         gtk_text_buffer_create_mark(buffer, "pager_position", &end, TRUE);
  68
  69         g_signal_connect(window, "delete-event", G_CALLBACK(quit), NULL);
  70         g_signal_connect(button, "clicked", G_CALLBACK(barf), buffer);
  71
  72
  73         gtk_main();
  74         return 0;
  75 }