10 static GtkTextBuffer *info_buffer;
11 static GtkTextBuffer *source_buffer;
13 static gchar *current_file = NULL;
24 typedef struct _CallbackData CallbackData;
33 * @base: base filename
34 * @err: location to store error, or %NULL.
36 * Looks for @base first in the current directory, then in the
37 * location GTK+ where it will be installed on make install,
38 * returns the first file found.
40 * Return value: the filename, if found or %NULL
43 demo_find_file (const char *base,
46 g_return_val_if_fail (err == NULL || *err == NULL, FALSE);
48 if (g_file_test (base, G_FILE_TEST_EXISTS))
49 return g_strdup (base);
52 char *filename = g_build_filename (DEMOCODEDIR, base, NULL);
53 if (!g_file_test (filename, G_FILE_TEST_EXISTS))
55 g_set_error (err, G_FILE_ERROR, G_FILE_ERROR_NOENT,
56 "Cannot find demo data file \"%s\"", base);
65 window_closed_cb (GtkWidget *window, gpointer data)
67 CallbackData *cbdata = data;
71 gtk_tree_model_get_iter (cbdata->model, &iter, cbdata->path);
72 gtk_tree_model_get (GTK_TREE_MODEL (cbdata->model), &iter,
73 ITALIC_COLUMN, &italic,
76 gtk_tree_store_set (GTK_TREE_STORE (cbdata->model), &iter,
77 ITALIC_COLUMN, !italic,
80 gtk_tree_path_free (cbdata->path);
85 read_line (FILE *stream, GString *str)
93 g_string_truncate (str, 0);
100 c = getc_unlocked (stream);
116 int next_c = getc_unlocked (stream);
118 int next_c = getc (stream);
121 if (!(next_c == EOF ||
122 (c == '\r' && next_c == '\n') ||
123 (c == '\n' && next_c == '\r')))
124 ungetc (next_c, stream);
129 g_string_append_c (str, c);
136 funlockfile (stream);
143 /* Stupid syntax highlighting.
145 * No regex was used in the making of this highlighting.
146 * It should only work for simple cases. This is good, as
147 * that's all we should have in the demos.
149 /* This code should not be used elsewhere, except perhaps as an example of how
150 * to iterate through a text buffer.
157 static gchar *tokens[] =
164 static gchar *types[] =
198 "GtkColorSelection ",
212 static gchar *control[] =
226 parse_chars (gchar *text,
235 /* Handle comments first */
236 if (*state == STATE_IN_COMMENT)
238 *end_ptr = strstr (text, "*/");
242 *state = STATE_NORMAL;
251 /* check for comment */
252 if (!strncmp (text, "/*", 2))
254 *end_ptr = strstr (text, "*/");
258 *state = STATE_IN_COMMENT;
263 /* check for preprocessor defines */
264 if (*text == '#' && start)
267 *tag = "preprocessor";
272 if (start && * text != '\t' && *text != ' ' && *text != '{' && *text != '}')
274 if (strstr (text, "("))
276 *end_ptr = strstr (text, "(");
281 /* check for types */
282 for (i = 0; types[i] != NULL; i++)
283 if (!strncmp (text, types[i], strlen (types[i])))
285 *end_ptr = text + strlen (types[i]);
290 /* check for control */
291 for (i = 0; control[i] != NULL; i++)
292 if (!strncmp (text, control[i], strlen (control[i])))
294 *end_ptr = text + strlen (control[i]);
299 /* check for string */
302 gint maybe_escape = FALSE;
306 while (**end_ptr != '\000')
308 if (**end_ptr == '\"' && !maybe_escape)
313 if (**end_ptr == '\\')
316 maybe_escape = FALSE;
322 /* not at the start of a tag. Find the next one. */
323 for (i = 0; tokens[i] != NULL; i++)
325 next_token = strstr (text, tokens[i]);
329 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
331 *end_ptr = next_token;
335 for (i = 0; types[i] != NULL; i++)
337 next_token = strstr (text, types[i]);
341 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
343 *end_ptr = next_token;
347 for (i = 0; control[i] != NULL; i++)
349 next_token = strstr (text, control[i]);
353 *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
355 *end_ptr = next_token;
360 /* While not as cool as c-mode, this will do as a quick attempt at highlighting */
364 GtkTextIter start_iter, next_iter, tmp_iter;
367 gchar *start_ptr, *end_ptr;
370 state = STATE_NORMAL;
372 gtk_text_buffer_get_iter_at_offset (source_buffer, &start_iter, 0);
374 next_iter = start_iter;
375 while (gtk_text_iter_forward_line (&next_iter))
377 gboolean start = TRUE;
378 start_ptr = text = gtk_text_iter_get_text (&start_iter, &next_iter);
382 parse_chars (start_ptr, &end_ptr, &state, &tag, start);
387 tmp_iter = start_iter;
388 gtk_text_iter_forward_chars (&tmp_iter, end_ptr - start_ptr);
392 tmp_iter = next_iter;
395 gtk_text_buffer_apply_tag_by_name (source_buffer, tag, &start_iter, &tmp_iter);
397 start_iter = tmp_iter;
403 start_iter = next_iter;
408 load_file (const gchar *filename)
411 GtkTextIter start, end;
414 GString *buffer = g_string_new (NULL);
416 gboolean in_para = 0;
418 if (current_file && !strcmp (current_file, filename))
420 g_string_free (buffer, TRUE);
424 g_free (current_file);
425 current_file = g_strdup (filename);
427 gtk_text_buffer_get_bounds (info_buffer, &start, &end);
428 gtk_text_buffer_delete (info_buffer, &start, &end);
430 gtk_text_buffer_get_bounds (source_buffer, &start, &end);
431 gtk_text_buffer_delete (source_buffer, &start, &end);
433 full_filename = demo_find_file (filename, &err);
436 g_warning ("%s", err->message);
441 file = fopen (full_filename, "r");
444 g_warning ("Cannot open %s: %s\n", full_filename, g_strerror (errno));
446 g_free (full_filename);
451 gtk_text_buffer_get_iter_at_offset (info_buffer, &start, 0);
452 while (read_line (file, buffer))
454 gchar *p = buffer->str;
462 while (*p == '/' || *p == '*' || g_ascii_isspace (*p))
465 while (*r != '/' && strlen (r))
470 while (q > p && g_ascii_isspace (*(q - 1)))
475 int len_chars = g_utf8_pointer_to_offset (p, q);
479 g_assert (strlen (p) >= q - p);
480 gtk_text_buffer_insert (info_buffer, &end, p, q - p);
483 gtk_text_iter_backward_chars (&start, len_chars);
484 gtk_text_buffer_apply_tag_by_name (info_buffer, "title", &start, &end);
493 /* Reading body of info section */
494 while (g_ascii_isspace (*p))
496 if (*p == '*' && *(p + 1) == '/')
498 gtk_text_buffer_get_iter_at_offset (source_buffer, &start, 0);
505 while (*p == '*' || g_ascii_isspace (*p))
509 while (g_ascii_isspace (*(p + len - 1)))
515 gtk_text_buffer_insert (info_buffer, &start, " ", 1);
517 g_assert (strlen (p) >= len);
518 gtk_text_buffer_insert (info_buffer, &start, p, len);
523 gtk_text_buffer_insert (info_buffer, &start, "\n", 1);
530 /* Skipping blank lines */
531 while (g_ascii_isspace (*p))
543 /* Reading program body */
544 gtk_text_buffer_insert (source_buffer, &start, p, -1);
545 gtk_text_buffer_insert (source_buffer, &start, "\n", 1);
552 g_string_free (buffer, TRUE);
556 row_activated_cb (GtkTreeView *tree_view,
558 GtkTreeViewColumn *column)
566 model = gtk_tree_view_get_model (tree_view);
568 gtk_tree_model_get_iter (model, &iter, path);
569 gtk_tree_model_get (GTK_TREE_MODEL (model),
572 ITALIC_COLUMN, &italic,
577 gtk_tree_store_set (GTK_TREE_STORE (model),
579 ITALIC_COLUMN, !italic,
585 CallbackData *cbdata;
587 cbdata = g_new (CallbackData, 1);
588 cbdata->model = model;
589 cbdata->path = gtk_tree_path_copy (path);
591 g_signal_connect (window, "destroy",
592 G_CALLBACK (window_closed_cb), cbdata);
598 selection_cb (GtkTreeSelection *selection,
602 GValue value = {0, };
604 if (! gtk_tree_selection_get_selected (selection, NULL, &iter))
607 gtk_tree_model_get_value (model, &iter,
610 if (g_value_get_string (&value))
611 load_file (g_value_get_string (&value));
612 g_value_unset (&value);
616 create_text (GtkTextBuffer **buffer,
619 GtkWidget *scrolled_window;
620 GtkWidget *text_view;
621 PangoFontDescription *font_desc;
623 scrolled_window = gtk_scrolled_window_new (NULL, NULL);
624 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
625 GTK_POLICY_AUTOMATIC,
626 GTK_POLICY_AUTOMATIC);
627 gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
630 text_view = gtk_text_view_new ();
632 *buffer = gtk_text_buffer_new (NULL);
633 gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), *buffer);
634 gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
635 gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);
637 gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
641 font_desc = pango_font_description_from_string ("Courier 12");
642 gtk_widget_modify_font (text_view, font_desc);
643 pango_font_description_free (font_desc);
645 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
650 /* Make it a bit nicer for text. */
651 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
653 gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view),
655 gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view),
659 return scrolled_window;
665 GtkTreeSelection *selection;
666 GtkCellRenderer *cell;
667 GtkWidget *tree_view;
668 GtkTreeViewColumn *column;
672 Demo *d = testgtk_demos;
674 model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_BOOLEAN);
675 tree_view = gtk_tree_view_new ();
676 gtk_tree_view_set_model (GTK_TREE_VIEW (tree_view), GTK_TREE_MODEL (model));
677 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
679 gtk_tree_selection_set_mode (GTK_TREE_SELECTION (selection),
680 GTK_SELECTION_BROWSE);
681 gtk_widget_set_size_request (tree_view, 200, -1);
683 /* this code only supports 1 level of children. If we
684 * want more we probably have to use a recursing function.
688 Demo *children = d->children;
690 gtk_tree_store_append (GTK_TREE_STORE (model), &iter, NULL);
692 gtk_tree_store_set (GTK_TREE_STORE (model),
694 TITLE_COLUMN, d->title,
695 FILENAME_COLUMN, d->filename,
696 FUNC_COLUMN, d->func,
697 ITALIC_COLUMN, FALSE,
705 while (children->title)
707 GtkTreeIter child_iter;
709 gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
711 gtk_tree_store_set (GTK_TREE_STORE (model),
713 TITLE_COLUMN, children->title,
714 FILENAME_COLUMN, children->filename,
715 FUNC_COLUMN, children->func,
716 ITALIC_COLUMN, FALSE,
723 cell = gtk_cell_renderer_text_new ();
725 g_object_set (G_OBJECT (cell),
726 "style", PANGO_STYLE_ITALIC,
729 column = gtk_tree_view_column_new_with_attributes ("Widget (double click for demo)",
731 "text", TITLE_COLUMN,
732 "style_set", ITALIC_COLUMN,
735 gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view),
736 GTK_TREE_VIEW_COLUMN (column));
738 g_signal_connect (selection, "changed", G_CALLBACK (selection_cb), model);
739 g_signal_connect (tree_view, "row_activated", G_CALLBACK (row_activated_cb), model);
741 gtk_tree_view_expand_all (GTK_TREE_VIEW (tree_view));
746 setup_default_icon (void)
755 filename = demo_find_file ("gtk-logo-rgb.gif", &err);
758 pixbuf = gdk_pixbuf_new_from_file (filename, &err);
762 /* Ignoring this error (passing NULL instead of &err above)
763 * would probably be reasonable for most apps. We're just
770 dialog = gtk_message_dialog_new (NULL, 0,
773 "Failed to read icon file: %s",
777 g_signal_connect (dialog, "response",
778 G_CALLBACK (gtk_widget_destroy), NULL);
784 GdkPixbuf *transparent;
786 /* The gtk-logo-rgb icon has a white background, make it transparent */
787 transparent = gdk_pixbuf_add_alpha (pixbuf, TRUE, 0xff, 0xff, 0xff);
790 list = g_list_append (list, transparent);
791 gtk_window_set_default_icon_list (list);
793 g_object_unref (G_OBJECT (pixbuf));
794 g_object_unref (G_OBJECT (transparent));
799 main (int argc, char **argv)
807 /* Most code in gtk-demo is intended to be exemplary, but not
808 * these few lines, which are just a hack so gtk-demo will work
809 * in the GTK tree without installing it.
811 if (g_file_test ("../../gdk-pixbuf/libpixbufloader-pnm.la",
814 putenv ("GDK_PIXBUF_MODULEDIR=../../gdk-pixbuf");
815 putenv ("GTK_IM_MODULE_FILE=../../modules/input/gtk.immodules");
817 /* -- End of hack -- */
819 gtk_init (&argc, &argv);
821 setup_default_icon ();
823 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
824 gtk_window_set_title (GTK_WINDOW (window), "GTK+ Code Demos");
825 g_signal_connect (window, "destroy",
826 G_CALLBACK (gtk_main_quit), NULL);
828 hbox = gtk_hbox_new (FALSE, 0);
829 gtk_container_add (GTK_CONTAINER (window), hbox);
831 tree = create_tree ();
832 gtk_box_pack_start (GTK_BOX (hbox), tree, FALSE, FALSE, 0);
834 notebook = gtk_notebook_new ();
835 gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
837 gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
838 create_text (&info_buffer, FALSE),
839 gtk_label_new_with_mnemonic ("_Info"));
841 gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
842 create_text (&source_buffer, TRUE),
843 gtk_label_new_with_mnemonic ("_Source"));
845 tag = gtk_text_buffer_create_tag (info_buffer, "title",
849 tag = gtk_text_buffer_create_tag (source_buffer, "comment",
852 tag = gtk_text_buffer_create_tag (source_buffer, "type",
853 "foreground", "ForestGreen",
855 tag = gtk_text_buffer_create_tag (source_buffer, "string",
856 "foreground", "RosyBrown",
857 "weight", PANGO_WEIGHT_BOLD,
859 tag = gtk_text_buffer_create_tag (source_buffer, "control",
860 "foreground", "purple",
862 tag = gtk_text_buffer_create_tag (source_buffer, "preprocessor",
863 "style", PANGO_STYLE_OBLIQUE,
864 "foreground", "burlywood4",
866 tag = gtk_text_buffer_create_tag (source_buffer, "function",
867 "weight", PANGO_WEIGHT_BOLD,
868 "foreground", "DarkGoldenrod4",
871 gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
872 gtk_widget_show_all (window);
875 load_file (testgtk_demos[0].filename);