/* Text View/Markup * * GtkTextBuffer lets you define your own tags that can influence * text formatting in a variety of ways. In this example, we show * that GtkTextBuffer can load Pango markup and automatically generate * suitable tags. */ #include static GtkWidget *stack; static GtkWidget *view; static GtkWidget *view2; static void source_toggled (GtkToggleButton *button) { if (gtk_toggle_button_get_active (button)) gtk_stack_set_visible_child_name (GTK_STACK (stack), "source"); else { GtkTextBuffer *buffer; GtkTextIter start, end; gchar *markup; buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view2)); gtk_text_buffer_get_bounds (buffer, &start, &end); markup = gtk_text_buffer_get_text (buffer, &start, &end, FALSE); buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)); gtk_text_buffer_get_bounds (buffer, &start, &end); gtk_text_buffer_begin_irreversible_action (buffer); gtk_text_buffer_delete (buffer, &start, &end); gtk_text_buffer_insert_markup (buffer, &start, markup, -1); gtk_text_buffer_end_irreversible_action (buffer); g_free (markup); gtk_stack_set_visible_child_name (GTK_STACK (stack), "formatted"); } } GtkWidget * do_markup (GtkWidget *do_widget) { static GtkWidget *window = NULL; if (!window) { GtkWidget *sw; GtkTextBuffer *buffer; GtkTextIter iter; GBytes *bytes; const gchar *markup; GtkWidget *header; GtkWidget *show_source; window = gtk_window_new (); gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget)); gtk_window_set_default_size (GTK_WINDOW (window), 450, 450); g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window); stack = gtk_stack_new (); gtk_widget_show (stack); gtk_window_set_child (GTK_WINDOW (window), stack); show_source = gtk_check_button_new_with_label ("Source"); gtk_widget_set_valign (show_source, GTK_ALIGN_CENTER); g_signal_connect (show_source, "toggled", G_CALLBACK (source_toggled), stack); header = gtk_header_bar_new (); gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), TRUE); gtk_header_bar_pack_start (GTK_HEADER_BAR (header), show_source); gtk_window_set_titlebar (GTK_WINDOW (window), header); gtk_window_set_title (GTK_WINDOW (window), "Markup"); view = gtk_text_view_new (); gtk_text_view_set_editable (GTK_TEXT_VIEW (view), FALSE); gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view), GTK_WRAP_WORD_CHAR); gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view), 10); gtk_text_view_set_right_margin (GTK_TEXT_VIEW (view), 10); sw = gtk_scrolled_window_new (); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view); gtk_stack_add_named (GTK_STACK (stack), sw, "formatted"); view2 = gtk_text_view_new (); gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view2), GTK_WRAP_WORD); gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view2), 10); gtk_text_view_set_right_margin (GTK_TEXT_VIEW (view2), 10); sw = gtk_scrolled_window_new (); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view2); gtk_stack_add_named (GTK_STACK (stack), sw, "source"); bytes = g_resources_lookup_data ("/markup/markup.txt", 0, NULL); markup = (const gchar *)g_bytes_get_data (bytes, NULL); buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)); gtk_text_buffer_get_start_iter (buffer, &iter); gtk_text_buffer_begin_irreversible_action (buffer); gtk_text_buffer_insert_markup (buffer, &iter, markup, -1); gtk_text_buffer_end_irreversible_action (buffer); buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view2)); gtk_text_buffer_get_start_iter (buffer, &iter); gtk_text_buffer_begin_irreversible_action (buffer); gtk_text_buffer_insert (buffer, &iter, markup, -1); gtk_text_buffer_end_irreversible_action (buffer); g_bytes_unref (bytes); gtk_widget_show (stack); } if (!gtk_widget_get_visible (window)) gtk_widget_show (window); else gtk_window_destroy (GTK_WINDOW (window)); return window; }