10 static GtkTextBuffer *info_buffer;
11 static GtkTextBuffer *source_buffer;
13 static gchar *current_file = NULL;
24 typedef struct _CallbackData CallbackData;
36 get_democodedir (void)
38 static char *result = NULL;
42 result = g_win32_get_package_installation_directory (NULL, NULL);
44 result = "unknown-location";
46 result = g_strconcat (result, "\\share\\gtk-2.0\\demo", NULL);
52 #define DEMOCODEDIR get_democodedir ()
58 * @base: base filename
59 * @err: location to store error, or %NULL.
61 * Looks for @base first in the current directory, then in the
62 * location GTK+ where it will be installed on make install,
63 * returns the first file found.
65 * Return value: the filename, if found or %NULL
68 demo_find_file (const char *base,
71 g_return_val_if_fail (err == NULL || *err == NULL, NULL);
73 if (g_file_test ("gtk-logo-rgb.gif", G_FILE_TEST_EXISTS) &&
74 g_file_test (base, G_FILE_TEST_EXISTS))
75 return g_strdup (base);
78 char *filename = g_build_filename (DEMOCODEDIR, base, NULL);
79 if (!g_file_test (filename, G_FILE_TEST_EXISTS))
81 g_set_error (err, G_FILE_ERROR, G_FILE_ERROR_NOENT,
82 "Cannot find demo data file \"%s\"", base);
91 window_closed_cb (GtkWidget *window, gpointer data)
93 CallbackData *cbdata = data;
97 gtk_tree_model_get_iter (cbdata->model, &iter, cbdata->path);
98 gtk_tree_model_get (GTK_TREE_MODEL (cbdata->model), &iter,
99 ITALIC_COLUMN, &italic,
102 gtk_tree_store_set (GTK_TREE_STORE (cbdata->model), &iter,
103 ITALIC_COLUMN, !italic,
106 gtk_tree_path_free (cbdata->path);
111 read_line (FILE *stream, GString *str)
115 #ifdef HAVE_FLOCKFILE
119 g_string_truncate (str, 0);
125 #ifndef HAVE_FLOCKFILE
126 c = getc_unlocked (stream);
141 #ifdef HAVE_FLOCKFILE
142 int next_c = getc_unlocked (stream);
144 int next_c = getc (stream);
147 if (!(next_c == EOF ||
148 (c == '\r' && next_c == '\n') ||
149 (c == '\n' && next_c == '\r')))
150 ungetc (next_c, stream);
155 g_string_append_c (str, c);
161 #ifdef HAVE_FLOCKFILE
162 funlockfile (stream);
169 /* Stupid syntax highlighting.
171 * No regex was used in the making of this highlighting.
172 * It should only work for simple cases. This is good, as
173 * that's all we should have in the demos.
175 /* This code should not be used elsewhere, except perhaps as an example of how
176 * to iterate through a text buffer.
183 static gchar *tokens[] =
190 static gchar *types[] =
224 "GtkColorSelection ",
238 static gchar *control[] =
252 parse_chars (gchar *text,
261 /* Handle comments first */
262 if (*state == STATE_IN_COMMENT)
264 *end_ptr = strstr (text, "*/");
268 *state = STATE_NORMAL;
277 /* check for comment */
278 if (!strncmp (text, "/*", 2))
280 *end_ptr = strstr (text, "*/");
284 *state = STATE_IN_COMMENT;
289 /* check for preprocessor defines */
290 if (*text == '#' && start)
293 *tag = "preprocessor";
298 if (start && * text != '\t' && *text != ' ' && *text != '{' && *text != '}')
300 if (strstr (text, "("))
302 *end_ptr = strstr (text, "(");
307 /* check for types */
308 for (i = 0; types[i] != NULL; i++)
309 if (!strncmp (text, types[i], strlen (types[i])))
311 *end_ptr = text + strlen (types[i]);
316 /* check for control */
317 for (i = 0; control[i] != NULL; i++)
318 if (!strncmp (text, control[i], strlen (control[i])))
320 *end_ptr = text + strlen (control[i]);
325 /* check for string */
328 gint maybe_escape = FALSE;
332 while (**end_ptr != '\000')
334 if (**end_ptr == '\"' && !maybe_escape)
339 if (**end_ptr == '\\')
342 maybe_escape = FALSE;
348 /* not at the start of a tag. Find the next one. */
349 for (i = 0; tokens[i] != NULL; i++)
351 next_token = strstr (text, tokens[i]);
355 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
357 *end_ptr = next_token;
361 for (i = 0; types[i] != NULL; i++)
363 next_token = strstr (text, types[i]);
367 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
369 *end_ptr = next_token;
373 for (i = 0; control[i] != NULL; i++)
375 next_token = strstr (text, control[i]);
379 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
381 *end_ptr = next_token;
386 /* While not as cool as c-mode, this will do as a quick attempt at highlighting */
390 GtkTextIter start_iter, next_iter, tmp_iter;
393 gchar *start_ptr, *end_ptr;
396 state = STATE_NORMAL;
398 gtk_text_buffer_get_iter_at_offset (source_buffer, &start_iter, 0);
400 next_iter = start_iter;
401 while (gtk_text_iter_forward_line (&next_iter))
403 gboolean start = TRUE;
404 start_ptr = text = gtk_text_iter_get_text (&start_iter, &next_iter);
408 parse_chars (start_ptr, &end_ptr, &state, &tag, start);
413 tmp_iter = start_iter;
414 gtk_text_iter_forward_chars (&tmp_iter, end_ptr - start_ptr);
418 tmp_iter = next_iter;
421 gtk_text_buffer_apply_tag_by_name (source_buffer, tag, &start_iter, &tmp_iter);
423 start_iter = tmp_iter;
429 start_iter = next_iter;
434 load_file (const gchar *filename)
437 GtkTextIter start, end;
440 GString *buffer = g_string_new (NULL);
442 gboolean in_para = 0;
444 if (current_file && !strcmp (current_file, filename))
446 g_string_free (buffer, TRUE);
450 g_free (current_file);
451 current_file = g_strdup (filename);
453 gtk_text_buffer_get_bounds (info_buffer, &start, &end);
454 gtk_text_buffer_delete (info_buffer, &start, &end);
456 gtk_text_buffer_get_bounds (source_buffer, &start, &end);
457 gtk_text_buffer_delete (source_buffer, &start, &end);
459 full_filename = demo_find_file (filename, &err);
462 g_warning ("%s", err->message);
467 file = fopen (full_filename, "r");
470 g_warning ("Cannot open %s: %s\n", full_filename, g_strerror (errno));
472 g_free (full_filename);
477 gtk_text_buffer_get_iter_at_offset (info_buffer, &start, 0);
478 while (read_line (file, buffer))
480 gchar *p = buffer->str;
488 while (*p == '/' || *p == '*' || g_ascii_isspace (*p))
491 while (*r != '/' && strlen (r))
496 while (q > p && g_ascii_isspace (*(q - 1)))
501 int len_chars = g_utf8_pointer_to_offset (p, q);
505 g_assert (strlen (p) >= q - p);
506 gtk_text_buffer_insert (info_buffer, &end, p, q - p);
509 gtk_text_iter_backward_chars (&start, len_chars);
510 gtk_text_buffer_apply_tag_by_name (info_buffer, "title", &start, &end);
519 /* Reading body of info section */
520 while (g_ascii_isspace (*p))
522 if (*p == '*' && *(p + 1) == '/')
524 gtk_text_buffer_get_iter_at_offset (source_buffer, &start, 0);
531 while (*p == '*' || g_ascii_isspace (*p))
535 while (g_ascii_isspace (*(p + len - 1)))
541 gtk_text_buffer_insert (info_buffer, &start, " ", 1);
543 g_assert (strlen (p) >= len);
544 gtk_text_buffer_insert (info_buffer, &start, p, len);
549 gtk_text_buffer_insert (info_buffer, &start, "\n", 1);
556 /* Skipping blank lines */
557 while (g_ascii_isspace (*p))
569 /* Reading program body */
570 gtk_text_buffer_insert (source_buffer, &start, p, -1);
571 gtk_text_buffer_insert (source_buffer, &start, "\n", 1);
578 g_string_free (buffer, TRUE);
582 row_activated_cb (GtkTreeView *tree_view,
584 GtkTreeViewColumn *column)
592 model = gtk_tree_view_get_model (tree_view);
594 gtk_tree_model_get_iter (model, &iter, path);
595 gtk_tree_model_get (GTK_TREE_MODEL (model),
598 ITALIC_COLUMN, &italic,
603 gtk_tree_store_set (GTK_TREE_STORE (model),
605 ITALIC_COLUMN, !italic,
607 window = (func) (gtk_widget_get_toplevel (GTK_WIDGET (tree_view)));
611 CallbackData *cbdata;
613 cbdata = g_new (CallbackData, 1);
614 cbdata->model = model;
615 cbdata->path = gtk_tree_path_copy (path);
617 g_signal_connect (window, "destroy",
618 G_CALLBACK (window_closed_cb), cbdata);
624 selection_cb (GtkTreeSelection *selection,
628 GValue value = {0, };
630 if (! gtk_tree_selection_get_selected (selection, NULL, &iter))
633 gtk_tree_model_get_value (model, &iter,
636 if (g_value_get_string (&value))
637 load_file (g_value_get_string (&value));
638 g_value_unset (&value);
642 create_text (GtkTextBuffer **buffer,
645 GtkWidget *scrolled_window;
646 GtkWidget *text_view;
647 PangoFontDescription *font_desc;
649 scrolled_window = gtk_scrolled_window_new (NULL, NULL);
650 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
651 GTK_POLICY_AUTOMATIC,
652 GTK_POLICY_AUTOMATIC);
653 gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
656 text_view = gtk_text_view_new ();
658 *buffer = gtk_text_buffer_new (NULL);
659 gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), *buffer);
660 gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
661 gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);
663 gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
667 font_desc = pango_font_description_from_string ("Courier 12");
668 gtk_widget_modify_font (text_view, font_desc);
669 pango_font_description_free (font_desc);
671 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
676 /* Make it a bit nicer for text. */
677 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
679 gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view),
681 gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view),
685 return scrolled_window;
691 GtkTreeSelection *selection;
692 GtkCellRenderer *cell;
693 GtkWidget *tree_view;
694 GtkTreeViewColumn *column;
698 Demo *d = testgtk_demos;
700 model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_BOOLEAN);
701 tree_view = gtk_tree_view_new ();
702 gtk_tree_view_set_model (GTK_TREE_VIEW (tree_view), GTK_TREE_MODEL (model));
703 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
705 gtk_tree_selection_set_mode (GTK_TREE_SELECTION (selection),
706 GTK_SELECTION_BROWSE);
707 gtk_widget_set_size_request (tree_view, 200, -1);
709 /* this code only supports 1 level of children. If we
710 * want more we probably have to use a recursing function.
714 Demo *children = d->children;
716 gtk_tree_store_append (GTK_TREE_STORE (model), &iter, NULL);
718 gtk_tree_store_set (GTK_TREE_STORE (model),
720 TITLE_COLUMN, d->title,
721 FILENAME_COLUMN, d->filename,
722 FUNC_COLUMN, d->func,
723 ITALIC_COLUMN, FALSE,
731 while (children->title)
733 GtkTreeIter child_iter;
735 gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
737 gtk_tree_store_set (GTK_TREE_STORE (model),
739 TITLE_COLUMN, children->title,
740 FILENAME_COLUMN, children->filename,
741 FUNC_COLUMN, children->func,
742 ITALIC_COLUMN, FALSE,
749 cell = gtk_cell_renderer_text_new ();
752 "style", PANGO_STYLE_ITALIC,
755 column = gtk_tree_view_column_new_with_attributes ("Widget (double click for demo)",
757 "text", TITLE_COLUMN,
758 "style_set", ITALIC_COLUMN,
761 gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view),
762 GTK_TREE_VIEW_COLUMN (column));
764 g_signal_connect (selection, "changed", G_CALLBACK (selection_cb), model);
765 g_signal_connect (tree_view, "row_activated", G_CALLBACK (row_activated_cb), model);
767 gtk_tree_view_expand_all (GTK_TREE_VIEW (tree_view));
772 setup_default_icon (void)
781 filename = demo_find_file ("gtk-logo-rgb.gif", &err);
784 pixbuf = gdk_pixbuf_new_from_file (filename, &err);
788 /* Ignoring this error (passing NULL instead of &err above)
789 * would probably be reasonable for most apps. We're just
796 dialog = gtk_message_dialog_new (NULL, 0,
799 "Failed to read icon file: %s",
803 g_signal_connect (dialog, "response",
804 G_CALLBACK (gtk_widget_destroy), NULL);
810 GdkPixbuf *transparent;
812 /* The gtk-logo-rgb icon has a white background, make it transparent */
813 transparent = gdk_pixbuf_add_alpha (pixbuf, TRUE, 0xff, 0xff, 0xff);
816 list = g_list_append (list, transparent);
817 gtk_window_set_default_icon_list (list);
819 g_object_unref (pixbuf);
820 g_object_unref (transparent);
825 main (int argc, char **argv)
833 /* Most code in gtk-demo is intended to be exemplary, but not
834 * these few lines, which are just a hack so gtk-demo will work
835 * in the GTK tree without installing it.
837 if (g_file_test ("../../gdk-pixbuf/libpixbufloader-pnm.la",
840 g_setenv ("GDK_PIXBUF_MODULE_FILE", "../../gdk-pixbuf/gdk-pixbuf.loaders", TRUE);
841 g_setenv ("GTK_IM_MODULE_FILE", "../../modules/input/gtk.immodules", TRUE);
843 /* -- End of hack -- */
845 gtk_init (&argc, &argv);
847 setup_default_icon ();
849 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
850 gtk_window_set_title (GTK_WINDOW (window), "GTK+ Code Demos");
851 g_signal_connect (window, "destroy",
852 G_CALLBACK (gtk_main_quit), NULL);
854 hbox = gtk_hbox_new (FALSE, 0);
855 gtk_container_add (GTK_CONTAINER (window), hbox);
857 tree = create_tree ();
858 gtk_box_pack_start (GTK_BOX (hbox), tree, FALSE, FALSE, 0);
860 notebook = gtk_notebook_new ();
861 gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
863 gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
864 create_text (&info_buffer, FALSE),
865 gtk_label_new_with_mnemonic ("_Info"));
867 gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
868 create_text (&source_buffer, TRUE),
869 gtk_label_new_with_mnemonic ("_Source"));
871 tag = gtk_text_buffer_create_tag (info_buffer, "title",
875 tag = gtk_text_buffer_create_tag (source_buffer, "comment",
878 tag = gtk_text_buffer_create_tag (source_buffer, "type",
879 "foreground", "ForestGreen",
881 tag = gtk_text_buffer_create_tag (source_buffer, "string",
882 "foreground", "RosyBrown",
883 "weight", PANGO_WEIGHT_BOLD,
885 tag = gtk_text_buffer_create_tag (source_buffer, "control",
886 "foreground", "purple",
888 tag = gtk_text_buffer_create_tag (source_buffer, "preprocessor",
889 "style", PANGO_STYLE_OBLIQUE,
890 "foreground", "burlywood4",
892 tag = gtk_text_buffer_create_tag (source_buffer, "function",
893 "weight", PANGO_WEIGHT_BOLD,
894 "foreground", "DarkGoldenrod4",
897 gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
898 gtk_widget_show_all (window);
901 load_file (testgtk_demos[0].filename);