11 static GtkTextBuffer *info_buffer;
12 static GtkTextBuffer *source_buffer;
14 static gchar *current_file = NULL;
25 typedef struct _CallbackData CallbackData;
37 get_democodedir (void)
39 static char *result = NULL;
43 result = g_win32_get_package_installation_directory (NULL, NULL);
45 result = "unknown-location";
47 result = g_strconcat (result, "\\share\\gtk-2.0\\demo", NULL);
53 #define DEMOCODEDIR get_democodedir ()
59 * @base: base filename
60 * @err: location to store error, or %NULL.
62 * Looks for @base first in the current directory, then in the
63 * location GTK+ where it will be installed on make install,
64 * returns the first file found.
66 * Return value: the filename, if found or %NULL
69 demo_find_file (const char *base,
72 g_return_val_if_fail (err == NULL || *err == NULL, NULL);
74 if (g_file_test ("gtk-logo-rgb.gif", G_FILE_TEST_EXISTS) &&
75 g_file_test (base, G_FILE_TEST_EXISTS))
76 return g_strdup (base);
79 char *filename = g_build_filename (DEMOCODEDIR, base, NULL);
80 if (!g_file_test (filename, G_FILE_TEST_EXISTS))
82 g_set_error (err, G_FILE_ERROR, G_FILE_ERROR_NOENT,
83 "Cannot find demo data file \"%s\"", base);
92 window_closed_cb (GtkWidget *window, gpointer data)
94 CallbackData *cbdata = data;
98 gtk_tree_model_get_iter (cbdata->model, &iter, cbdata->path);
99 gtk_tree_model_get (GTK_TREE_MODEL (cbdata->model), &iter,
100 ITALIC_COLUMN, &italic,
103 gtk_tree_store_set (GTK_TREE_STORE (cbdata->model), &iter,
104 ITALIC_COLUMN, !italic,
107 gtk_tree_path_free (cbdata->path);
112 read_line (FILE *stream, GString *str)
116 #ifdef HAVE_FLOCKFILE
120 g_string_truncate (str, 0);
126 #ifdef HAVE_FLOCKFILE
127 c = getc_unlocked (stream);
142 #ifdef HAVE_FLOCKFILE
143 int next_c = getc_unlocked (stream);
145 int next_c = getc (stream);
148 if (!(next_c == EOF ||
149 (c == '\r' && next_c == '\n') ||
150 (c == '\n' && next_c == '\r')))
151 ungetc (next_c, stream);
156 g_string_append_c (str, c);
162 #ifdef HAVE_FLOCKFILE
163 funlockfile (stream);
170 /* Stupid syntax highlighting.
172 * No regex was used in the making of this highlighting.
173 * It should only work for simple cases. This is good, as
174 * that's all we should have in the demos.
176 /* This code should not be used elsewhere, except perhaps as an example of how
177 * to iterate through a text buffer.
184 static gchar *tokens[] =
191 static gchar *types[] =
225 "GtkColorSelection ",
239 static gchar *control[] =
253 parse_chars (gchar *text,
262 /* Handle comments first */
263 if (*state == STATE_IN_COMMENT)
265 *end_ptr = strstr (text, "*/");
269 *state = STATE_NORMAL;
278 /* check for comment */
279 if (!strncmp (text, "/*", 2))
281 *end_ptr = strstr (text, "*/");
285 *state = STATE_IN_COMMENT;
290 /* check for preprocessor defines */
291 if (*text == '#' && start)
294 *tag = "preprocessor";
299 if (start && * text != '\t' && *text != ' ' && *text != '{' && *text != '}')
301 if (strstr (text, "("))
303 *end_ptr = strstr (text, "(");
308 /* check for types */
309 for (i = 0; types[i] != NULL; i++)
310 if (!strncmp (text, types[i], strlen (types[i])))
312 *end_ptr = text + strlen (types[i]);
317 /* check for control */
318 for (i = 0; control[i] != NULL; i++)
319 if (!strncmp (text, control[i], strlen (control[i])))
321 *end_ptr = text + strlen (control[i]);
326 /* check for string */
329 gint maybe_escape = FALSE;
333 while (**end_ptr != '\000')
335 if (**end_ptr == '\"' && !maybe_escape)
340 if (**end_ptr == '\\')
343 maybe_escape = FALSE;
349 /* not at the start of a tag. Find the next one. */
350 for (i = 0; tokens[i] != NULL; i++)
352 next_token = strstr (text, tokens[i]);
356 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
358 *end_ptr = next_token;
362 for (i = 0; types[i] != NULL; i++)
364 next_token = strstr (text, types[i]);
368 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
370 *end_ptr = next_token;
374 for (i = 0; control[i] != NULL; i++)
376 next_token = strstr (text, control[i]);
380 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
382 *end_ptr = next_token;
387 /* While not as cool as c-mode, this will do as a quick attempt at highlighting */
391 GtkTextIter start_iter, next_iter, tmp_iter;
394 gchar *start_ptr, *end_ptr;
397 state = STATE_NORMAL;
399 gtk_text_buffer_get_iter_at_offset (source_buffer, &start_iter, 0);
401 next_iter = start_iter;
402 while (gtk_text_iter_forward_line (&next_iter))
404 gboolean start = TRUE;
405 start_ptr = text = gtk_text_iter_get_text (&start_iter, &next_iter);
409 parse_chars (start_ptr, &end_ptr, &state, &tag, start);
414 tmp_iter = start_iter;
415 gtk_text_iter_forward_chars (&tmp_iter, end_ptr - start_ptr);
419 tmp_iter = next_iter;
422 gtk_text_buffer_apply_tag_by_name (source_buffer, tag, &start_iter, &tmp_iter);
424 start_iter = tmp_iter;
430 start_iter = next_iter;
435 load_file (const gchar *filename)
438 GtkTextIter start, end;
441 GString *buffer = g_string_new (NULL);
443 gboolean in_para = 0;
445 if (current_file && !strcmp (current_file, filename))
447 g_string_free (buffer, TRUE);
451 g_free (current_file);
452 current_file = g_strdup (filename);
454 gtk_text_buffer_get_bounds (info_buffer, &start, &end);
455 gtk_text_buffer_delete (info_buffer, &start, &end);
457 gtk_text_buffer_get_bounds (source_buffer, &start, &end);
458 gtk_text_buffer_delete (source_buffer, &start, &end);
460 full_filename = demo_find_file (filename, &err);
463 g_warning ("%s", err->message);
468 file = fopen (full_filename, "r");
471 g_warning ("Cannot open %s: %s\n", full_filename, g_strerror (errno));
473 g_free (full_filename);
478 gtk_text_buffer_get_iter_at_offset (info_buffer, &start, 0);
479 while (read_line (file, buffer))
481 gchar *p = buffer->str;
489 while (*p == '/' || *p == '*' || g_ascii_isspace (*p))
492 while (*r != '/' && strlen (r))
497 while (q > p && g_ascii_isspace (*(q - 1)))
502 int len_chars = g_utf8_pointer_to_offset (p, q);
506 g_assert (strlen (p) >= q - p);
507 gtk_text_buffer_insert (info_buffer, &end, p, q - p);
510 gtk_text_iter_backward_chars (&start, len_chars);
511 gtk_text_buffer_apply_tag_by_name (info_buffer, "title", &start, &end);
520 /* Reading body of info section */
521 while (g_ascii_isspace (*p))
523 if (*p == '*' && *(p + 1) == '/')
525 gtk_text_buffer_get_iter_at_offset (source_buffer, &start, 0);
532 while (*p == '*' || g_ascii_isspace (*p))
536 while (g_ascii_isspace (*(p + len - 1)))
542 gtk_text_buffer_insert (info_buffer, &start, " ", 1);
544 g_assert (strlen (p) >= len);
545 gtk_text_buffer_insert (info_buffer, &start, p, len);
550 gtk_text_buffer_insert (info_buffer, &start, "\n", 1);
557 /* Skipping blank lines */
558 while (g_ascii_isspace (*p))
570 /* Reading program body */
571 gtk_text_buffer_insert (source_buffer, &start, p, -1);
572 gtk_text_buffer_insert (source_buffer, &start, "\n", 1);
579 g_string_free (buffer, TRUE);
583 row_activated_cb (GtkTreeView *tree_view,
585 GtkTreeViewColumn *column)
593 model = gtk_tree_view_get_model (tree_view);
595 gtk_tree_model_get_iter (model, &iter, path);
596 gtk_tree_model_get (GTK_TREE_MODEL (model),
599 ITALIC_COLUMN, &italic,
604 gtk_tree_store_set (GTK_TREE_STORE (model),
606 ITALIC_COLUMN, !italic,
608 window = (func) (gtk_widget_get_toplevel (GTK_WIDGET (tree_view)));
612 CallbackData *cbdata;
614 cbdata = g_new (CallbackData, 1);
615 cbdata->model = model;
616 cbdata->path = gtk_tree_path_copy (path);
618 g_signal_connect (window, "destroy",
619 G_CALLBACK (window_closed_cb), cbdata);
625 selection_cb (GtkTreeSelection *selection,
629 GValue value = {0, };
631 if (! gtk_tree_selection_get_selected (selection, NULL, &iter))
634 gtk_tree_model_get_value (model, &iter,
637 if (g_value_get_string (&value))
638 load_file (g_value_get_string (&value));
639 g_value_unset (&value);
643 create_text (GtkTextBuffer **buffer,
646 GtkWidget *scrolled_window;
647 GtkWidget *text_view;
648 PangoFontDescription *font_desc;
650 scrolled_window = gtk_scrolled_window_new (NULL, NULL);
651 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
652 GTK_POLICY_AUTOMATIC,
653 GTK_POLICY_AUTOMATIC);
654 gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
657 text_view = gtk_text_view_new ();
659 *buffer = gtk_text_buffer_new (NULL);
660 gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), *buffer);
661 gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
662 gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);
664 gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
668 font_desc = pango_font_description_from_string ("Courier 12");
669 gtk_widget_modify_font (text_view, font_desc);
670 pango_font_description_free (font_desc);
672 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
677 /* Make it a bit nicer for text. */
678 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
680 gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view),
682 gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view),
686 return scrolled_window;
692 GtkTreeSelection *selection;
693 GtkCellRenderer *cell;
694 GtkWidget *tree_view;
695 GtkTreeViewColumn *column;
699 Demo *d = testgtk_demos;
701 model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_BOOLEAN);
702 tree_view = gtk_tree_view_new ();
703 gtk_tree_view_set_model (GTK_TREE_VIEW (tree_view), GTK_TREE_MODEL (model));
704 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
706 gtk_tree_selection_set_mode (GTK_TREE_SELECTION (selection),
707 GTK_SELECTION_BROWSE);
708 gtk_widget_set_size_request (tree_view, 200, -1);
710 /* this code only supports 1 level of children. If we
711 * want more we probably have to use a recursing function.
715 Demo *children = d->children;
717 gtk_tree_store_append (GTK_TREE_STORE (model), &iter, NULL);
719 gtk_tree_store_set (GTK_TREE_STORE (model),
721 TITLE_COLUMN, d->title,
722 FILENAME_COLUMN, d->filename,
723 FUNC_COLUMN, d->func,
724 ITALIC_COLUMN, FALSE,
732 while (children->title)
734 GtkTreeIter child_iter;
736 gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
738 gtk_tree_store_set (GTK_TREE_STORE (model),
740 TITLE_COLUMN, children->title,
741 FILENAME_COLUMN, children->filename,
742 FUNC_COLUMN, children->func,
743 ITALIC_COLUMN, FALSE,
750 cell = gtk_cell_renderer_text_new ();
753 "style", PANGO_STYLE_ITALIC,
756 column = gtk_tree_view_column_new_with_attributes ("Widget (double click for demo)",
758 "text", TITLE_COLUMN,
759 "style_set", ITALIC_COLUMN,
762 gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view),
763 GTK_TREE_VIEW_COLUMN (column));
765 g_signal_connect (selection, "changed", G_CALLBACK (selection_cb), model);
766 g_signal_connect (tree_view, "row_activated", G_CALLBACK (row_activated_cb), model);
768 gtk_tree_view_expand_all (GTK_TREE_VIEW (tree_view));
773 setup_default_icon (void)
782 filename = demo_find_file ("gtk-logo-rgb.gif", &err);
785 pixbuf = gdk_pixbuf_new_from_file (filename, &err);
789 /* Ignoring this error (passing NULL instead of &err above)
790 * would probably be reasonable for most apps. We're just
797 dialog = gtk_message_dialog_new (NULL, 0,
800 "Failed to read icon file: %s",
804 g_signal_connect (dialog, "response",
805 G_CALLBACK (gtk_widget_destroy), NULL);
811 GdkPixbuf *transparent;
813 /* The gtk-logo-rgb icon has a white background, make it transparent */
814 transparent = gdk_pixbuf_add_alpha (pixbuf, TRUE, 0xff, 0xff, 0xff);
817 list = g_list_append (list, transparent);
818 gtk_window_set_default_icon_list (list);
820 g_object_unref (pixbuf);
821 g_object_unref (transparent);
826 main (int argc, char **argv)
834 /* Most code in gtk-demo is intended to be exemplary, but not
835 * these few lines, which are just a hack so gtk-demo will work
836 * in the GTK tree without installing it.
838 if (g_file_test ("../../gdk-pixbuf/libpixbufloader-pnm.la",
841 g_setenv ("GDK_PIXBUF_MODULE_FILE", "../../gdk-pixbuf/gdk-pixbuf.loaders", TRUE);
842 g_setenv ("GTK_IM_MODULE_FILE", "../../modules/input/gtk.immodules", TRUE);
844 /* -- End of hack -- */
846 gtk_init (&argc, &argv);
848 setup_default_icon ();
850 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
851 gtk_window_set_title (GTK_WINDOW (window), "GTK+ Code Demos");
852 g_signal_connect (window, "destroy",
853 G_CALLBACK (gtk_main_quit), NULL);
855 hbox = gtk_hbox_new (FALSE, 0);
856 gtk_container_add (GTK_CONTAINER (window), hbox);
858 tree = create_tree ();
859 gtk_box_pack_start (GTK_BOX (hbox), tree, FALSE, FALSE, 0);
861 notebook = gtk_notebook_new ();
862 gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
864 gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
865 create_text (&info_buffer, FALSE),
866 gtk_label_new_with_mnemonic ("_Info"));
868 gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
869 create_text (&source_buffer, TRUE),
870 gtk_label_new_with_mnemonic ("_Source"));
872 tag = gtk_text_buffer_create_tag (info_buffer, "title",
876 tag = gtk_text_buffer_create_tag (source_buffer, "comment",
879 tag = gtk_text_buffer_create_tag (source_buffer, "type",
880 "foreground", "ForestGreen",
882 tag = gtk_text_buffer_create_tag (source_buffer, "string",
883 "foreground", "RosyBrown",
884 "weight", PANGO_WEIGHT_BOLD,
886 tag = gtk_text_buffer_create_tag (source_buffer, "control",
887 "foreground", "purple",
889 tag = gtk_text_buffer_create_tag (source_buffer, "preprocessor",
890 "style", PANGO_STYLE_OBLIQUE,
891 "foreground", "burlywood4",
893 tag = gtk_text_buffer_create_tag (source_buffer, "function",
894 "weight", PANGO_WEIGHT_BOLD,
895 "foreground", "DarkGoldenrod4",
898 gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
899 gtk_widget_show_all (window);
902 load_file (testgtk_demos[0].filename);