Beispiel #1
0
/* Many execution paths may lead to this code so it needs to take appropriate
 * precausions to stuff like doc_view and doc_view->vs being NULL. */
enum frame_event_status
do_action(struct session *ses, enum main_action action_id, int verbose)
{
	enum frame_event_status status = FRAME_EVENT_OK;
	struct terminal *term = ses->tab->term;
	struct document_view *doc_view = current_frame(ses);
	struct link *link = NULL;

	if (action_id == -1) goto unknown_action;

	if (doc_view && doc_view->vs) {
		if (action_prefix_is_link_number(KEYMAP_MAIN, action_id)
		    && !try_jump_to_link_number(ses, doc_view))
			goto ignore_action;

		link = get_current_link(doc_view);

	} else if (action_requires_view_state(KEYMAP_MAIN, action_id)) {
		goto ignore_action;
	}

	if (action_requires_location(KEYMAP_MAIN, action_id)
	    && !have_location(ses))
		return FRAME_EVENT_OK;

	if (action_requires_link(KEYMAP_MAIN, action_id)
	    && !link)
		goto ignore_action;

	if (action_requires_form(KEYMAP_MAIN, action_id)
	    && (!link || !link_is_form(link)))
		goto ignore_action;

	if (!action_is_anonymous_safe(KEYMAP_MAIN, action_id)
	    && get_cmd_opt_bool("anonymous"))
		goto ignore_action;

	/* Please keep in alphabetical order for now. Later we can sort by most
	 * used or something. */
	switch (action_id) {
		case ACT_MAIN_ABORT_CONNECTION:
			abort_loading(ses, 1);
			print_screen_status(ses);
			break;

		case ACT_MAIN_ADD_BOOKMARK:
#ifdef CONFIG_BOOKMARKS
			launch_bm_add_doc_dialog(term, NULL, ses);
#endif
			break;
		case ACT_MAIN_ADD_BOOKMARK_LINK:
#ifdef CONFIG_BOOKMARKS
			launch_bm_add_link_dialog(term, NULL, ses);
#endif
			break;
		case ACT_MAIN_ADD_BOOKMARK_TABS:
#ifdef CONFIG_BOOKMARKS
			bookmark_terminal_tabs_dialog(term);
#endif
			break;

		case ACT_MAIN_AUTH_MANAGER:
			auth_manager(ses);
			break;

		case ACT_MAIN_BACKSPACE_PREFIX:

			if (!ses->kbdprefix.repeat_count) break;

			set_kbd_repeat_count(ses,
			                     ses->kbdprefix.repeat_count / 10);

			/* Keep send_event from resetting repeat_count. */
			status = FRAME_EVENT_SESSION_DESTROYED;

			break;

		case ACT_MAIN_BOOKMARK_MANAGER:
#ifdef CONFIG_BOOKMARKS
			bookmark_manager(ses);
#endif
			break;

		case ACT_MAIN_CACHE_MANAGER:
			cache_manager(ses);
			break;

		case ACT_MAIN_CACHE_MINIMIZE:
			shrink_memory(1);
			break;

		case ACT_MAIN_COOKIES_LOAD:
#ifdef CONFIG_COOKIES
			if (!get_opt_bool("cookies.save", NULL)) break;
			load_cookies();
#endif
			break;

		case ACT_MAIN_COOKIE_MANAGER:
#ifdef CONFIG_COOKIES
			cookie_manager(ses);
#endif
			break;

		case ACT_MAIN_COPY_CLIPBOARD:
			status = copy_current_link_to_clipboard(ses, doc_view, 0);
			break;

		case ACT_MAIN_DOCUMENT_INFO:
			document_info_dialog(ses);
			break;

		case ACT_MAIN_DOWNLOAD_MANAGER:
			download_manager(ses);
			break;

		case ACT_MAIN_EXMODE:
#ifdef CONFIG_EXMODE
			exmode_start(ses);
#endif
			break;

		case ACT_MAIN_FILE_MENU:
			activate_bfu_technology(ses, 0);
			break;

		case ACT_MAIN_FIND_NEXT:
			status = find_next(ses, doc_view, 1);
			break;

		case ACT_MAIN_FIND_NEXT_BACK:
			status = find_next(ses, doc_view, -1);
			break;

		case ACT_MAIN_FORGET_CREDENTIALS:
			free_auth();
			shrink_memory(1); /* flush caches */
			break;

		case ACT_MAIN_FORMHIST_MANAGER:
#ifdef CONFIG_FORMHIST
			formhist_manager(ses);
#endif
			break;

		case ACT_MAIN_FRAME_EXTERNAL_COMMAND:
			status = pass_uri_to_command(ses, doc_view,
			                             PASS_URI_FRAME);
			break;

		case ACT_MAIN_FRAME_NEXT:
			next_frame(ses, 1);
			draw_formatted(ses, 0);
			break;

		case ACT_MAIN_FRAME_MAXIMIZE:
			status = set_frame(ses, doc_view, 0);
			break;

		case ACT_MAIN_FRAME_PREV:
			next_frame(ses, -1);
			draw_formatted(ses, 0);
			break;

		case ACT_MAIN_GOTO_URL:
			goto_url_action(ses, NULL);
			break;

		case ACT_MAIN_GOTO_URL_CURRENT:
			goto_url_action(ses, get_current_url);
			break;

		case ACT_MAIN_GOTO_URL_CURRENT_LINK:
			goto_url_action(ses, get_current_link_url);
			break;

		case ACT_MAIN_GOTO_URL_HOME:
			goto_url_home(ses);
			break;

		case ACT_MAIN_HEADER_INFO:
			protocol_header_dialog(ses);
			break;

		case ACT_MAIN_HISTORY_MANAGER:
#ifdef CONFIG_GLOBHIST
			history_manager(ses);
#endif
			break;

		case ACT_MAIN_HISTORY_MOVE_BACK:
		{
			int count = int_max(1, eat_kbd_repeat_count(ses));

			go_history_by_n(ses, -count);
			break;
		}
		case ACT_MAIN_HISTORY_MOVE_FORWARD:
		{
			int count = int_max(1, eat_kbd_repeat_count(ses));

			go_history_by_n(ses, count);
			break;
		}
		case ACT_MAIN_JUMP_TO_LINK:
			break;

		case ACT_MAIN_KEYBINDING_MANAGER:
			keybinding_manager(ses);
			break;

		case ACT_MAIN_KILL_BACKGROUNDED_CONNECTIONS:
			abort_background_connections();
			break;

		case ACT_MAIN_LINK_DIALOG:
			open_link_dialog(ses);
			break;

		case ACT_MAIN_LINK_DOWNLOAD:
		case ACT_MAIN_LINK_DOWNLOAD_IMAGE:
		case ACT_MAIN_LINK_DOWNLOAD_RESUME:
			status = download_link(ses, doc_view, action_id);
			break;

		case ACT_MAIN_LINK_EXTERNAL_COMMAND:
			status = pass_uri_to_command(ses, doc_view,
			                             PASS_URI_LINK);
			break;

		case ACT_MAIN_LINK_FOLLOW:
			status = enter(ses, doc_view, 0);
			break;

		case ACT_MAIN_LINK_FOLLOW_RELOAD:
			status = enter(ses, doc_view, 1);
			break;

		case ACT_MAIN_LINK_INFO:
			link_info_dialog(ses);
			break;
			
		case ACT_MAIN_LINK_MENU:
			link_menu(term, NULL, ses);
			break;

		case ACT_MAIN_LINK_FORM_MENU:
			link_form_menu(ses);
			break;

		case ACT_MAIN_LUA_CONSOLE:
#ifdef CONFIG_SCRIPTING_LUA
			trigger_event_name("dialog-lua-console", ses);
#endif
			break;

		case ACT_MAIN_MARK_SET:
#ifdef CONFIG_MARKS
			ses->kbdprefix.mark = KP_MARK_SET;
			status = FRAME_EVENT_REFRESH;
#endif
			break;

		case ACT_MAIN_MARK_GOTO:
#ifdef CONFIG_MARKS
			/* TODO: Show promptly a menu (or even listbox?)
			 * with all the marks. But the next letter must
			 * still choose a mark directly! --pasky */
			ses->kbdprefix.mark = KP_MARK_GOTO;
			status = FRAME_EVENT_REFRESH;
#endif
			break;

		case ACT_MAIN_MENU:
			activate_bfu_technology(ses, -1);
			break;

		case ACT_MAIN_MOVE_CURRENT_TOP:
			status = move_current_top(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_CURSOR_UP:
			status = move_cursor_up(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_CURSOR_DOWN:
			status = move_cursor_down(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_CURSOR_LEFT:
			status = move_cursor_left(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_CURSOR_RIGHT:
			status = move_cursor_right(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_CURSOR_LINE_START:
			status = move_cursor_line_start(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_HALF_PAGE_DOWN:
			status = move_half_page_down(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_HALF_PAGE_UP:
			status = move_half_page_up(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_DOWN:
			status = move_link_down(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_DOWN_LINE:
			status = move_link_down_line(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_LEFT:
			status = move_link_left(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_LEFT_LINE:
			status = move_link_prev_line(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_NEXT:
			status = move_link_next(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_PREV:
			status = move_link_prev(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_RIGHT:
			status = move_link_right(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_RIGHT_LINE:
			status = move_link_next_line(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_UP:
			status = move_link_up(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_LINK_UP_LINE:
			status = move_link_up_line(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_PAGE_DOWN:
			status = move_page_down(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_PAGE_UP:
			status = move_page_up(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_DOCUMENT_START:
			status = move_document_start(ses, doc_view);
			break;

		case ACT_MAIN_MOVE_DOCUMENT_END:
			status = move_document_end(ses, doc_view);
			break;

		case ACT_MAIN_OPEN_LINK_IN_NEW_TAB:
			open_current_link_in_new_tab(ses, 0);
			break;

		case ACT_MAIN_OPEN_LINK_IN_NEW_TAB_IN_BACKGROUND:
			open_current_link_in_new_tab(ses, 1);
			break;

		case ACT_MAIN_OPEN_LINK_IN_NEW_WINDOW:
			open_in_new_window(term, send_open_in_new_window, ses);
			break;

		case ACT_MAIN_OPEN_NEW_TAB:
			open_uri_in_new_tab(ses, NULL, 0, 1);
			break;

		case ACT_MAIN_OPEN_NEW_TAB_IN_BACKGROUND:
			open_uri_in_new_tab(ses, NULL, 1, 1);
			break;

		case ACT_MAIN_OPEN_NEW_WINDOW:
			open_in_new_window(term, send_open_new_window, ses);
			break;

		case ACT_MAIN_OPEN_OS_SHELL:
			exec_shell(term);
			break;

		case ACT_MAIN_OPTIONS_MANAGER:
			options_manager(ses);
			break;

		case ACT_MAIN_QUIT:
			exit_prog(ses, 1);
			break;

		case ACT_MAIN_REALLY_QUIT:
			exit_prog(ses, 0);
			break;

		case ACT_MAIN_REDRAW:
			redraw_terminal_cls(term);
			break;

		case ACT_MAIN_RELOAD:
			reload(ses, CACHE_MODE_INCREMENT);
			break;

		case ACT_MAIN_RERENDER:
			draw_formatted(ses, 2);
			break;

		case ACT_MAIN_RESET_FORM:
			status = reset_form(ses, doc_view, 0);
			break;

		case ACT_MAIN_RESOURCE_INFO:
			resource_info(term);
			break;

		case ACT_MAIN_SAVE_AS:
			status = save_as(ses, doc_view, 0);
			break;

		case ACT_MAIN_SAVE_FORMATTED:
			status = save_formatted_dlg(ses, doc_view, 0);
			break;

		case ACT_MAIN_SAVE_OPTIONS:
			write_config(term);
			break;

		case ACT_MAIN_SAVE_URL_AS:
			save_url_as(ses);
			break;

		case ACT_MAIN_SCROLL_DOWN:
			status = scroll_down(ses, doc_view);
			break;

		case ACT_MAIN_SCROLL_LEFT:
			status = scroll_left(ses, doc_view);
			break;

		case ACT_MAIN_SCROLL_RIGHT:
			status = scroll_right(ses, doc_view);
			break;

		case ACT_MAIN_SCROLL_UP:
			status = scroll_up(ses, doc_view);
			break;

		case ACT_MAIN_SEARCH:
			status = search_dlg(ses, doc_view, 1);
			break;

		case ACT_MAIN_SEARCH_BACK:
			status = search_dlg(ses, doc_view, -1);
			break;

		case ACT_MAIN_SEARCH_TYPEAHEAD:
		case ACT_MAIN_SEARCH_TYPEAHEAD_LINK:
		case ACT_MAIN_SEARCH_TYPEAHEAD_TEXT:
		case ACT_MAIN_SEARCH_TYPEAHEAD_TEXT_BACK:
			status = search_typeahead(ses, doc_view, action_id);
			break;

		case ACT_MAIN_SHOW_TERM_OPTIONS:
			terminal_options(term, NULL, ses);
			break;

		case ACT_MAIN_SUBMIT_FORM:
			status = submit_form(ses, doc_view, 0);
			break;

		case ACT_MAIN_SUBMIT_FORM_RELOAD:
			status = submit_form(ses, doc_view, 1);
			break;

		case ACT_MAIN_TAB_CLOSE:
			close_tab(term, ses);
			status = FRAME_EVENT_SESSION_DESTROYED;
			break;

		case ACT_MAIN_TAB_CLOSE_ALL_BUT_CURRENT:
			close_all_tabs_but_current(ses);
			break;

		case ACT_MAIN_TAB_EXTERNAL_COMMAND:
			status = pass_uri_to_command(ses, doc_view,
			                             PASS_URI_TAB);
			break;

		case ACT_MAIN_TAB_MOVE_LEFT:
			move_current_tab(ses, -1);
			break;

		case ACT_MAIN_TAB_MOVE_RIGHT:
			move_current_tab(ses, 1);
			break;

		case ACT_MAIN_TAB_MENU:
			assert(ses->tab == get_current_tab(term));

			if (ses->status.show_tabs_bar)
				tab_menu(ses, ses->tab->xpos,
					 term->height - 1
					  - ses->status.show_status_bar,
					 1);
			else
				tab_menu(ses, 0, 0, 0);

			break;

		case ACT_MAIN_TAB_NEXT:
			switch_current_tab(ses, 1);
			break;

		case ACT_MAIN_TAB_PREV:
			switch_current_tab(ses, -1);
			break;

		case ACT_MAIN_TERMINAL_RESIZE:
			resize_terminal_dialog(term);
			break;

		case ACT_MAIN_TOGGLE_CSS:
#ifdef CONFIG_CSS
			toggle_document_option(ses, "document.css.enable");
#endif
			break;

		case ACT_MAIN_TOGGLE_DISPLAY_IMAGES:
			toggle_document_option(ses, "document.browse.images.show_as_links");
			break;

		case ACT_MAIN_TOGGLE_DISPLAY_TABLES:
			toggle_document_option(ses, "document.html.display_tables");
			break;

		case ACT_MAIN_TOGGLE_DOCUMENT_COLORS:
			toggle_document_option(ses, "document.colors.use_document_colors");
			break;

		case ACT_MAIN_TOGGLE_HTML_PLAIN:
			toggle_plain_html(ses, ses->doc_view, 0);
			break;

		case ACT_MAIN_TOGGLE_MOUSE:
#ifdef CONFIG_MOUSE
			toggle_mouse();
#endif
			break;

		case ACT_MAIN_TOGGLE_NUMBERED_LINKS:
			toggle_document_option(ses, "document.browse.links.numbering");
			break;

		case ACT_MAIN_TOGGLE_PLAIN_COMPRESS_EMPTY_LINES:
			toggle_document_option(ses, "document.plain.compress_empty_lines");
			break;

		case ACT_MAIN_TOGGLE_WRAP_TEXT:
			toggle_wrap_text(ses, ses->doc_view, 0);
			break;

		case ACT_MAIN_VIEW_IMAGE:
			status = view_image(ses, doc_view, 0);
			break;

		case ACT_MAIN_SCRIPTING_FUNCTION:
		case ACT_MAIN_NONE:
		case MAIN_ACTIONS:
		default:
unknown_action:
			if (verbose) {
				INTERNAL("No action handling defined for '%s'.",
					 get_action_name(KEYMAP_MAIN, action_id));
			}

			status = FRAME_EVENT_IGNORED;
	}

ignore_action:
	/* XXX: At this point the session may have been destroyed */

	if (status != FRAME_EVENT_SESSION_DESTROYED
	    && ses->insert_mode == INSERT_MODE_ON
	    && link != get_current_link(doc_view))
		ses->insert_mode = INSERT_MODE_OFF;

	if (status == FRAME_EVENT_REFRESH && doc_view)
		refresh_view(ses, doc_view, 0);

	return status;
}
Beispiel #2
0
void TabContainer::_notification(int p_what) {


    switch(p_what) {


    case NOTIFICATION_DRAW: {

        RID ci = get_canvas_item();
        Ref<StyleBox> panel = get_stylebox("panel");
        Size2 size = get_size();

        if (!tabs_visible) {

            panel->draw(ci, Rect2( 0, 0, size.width, size.height));
            return;
        }



        Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
        Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
        Ref<Texture> incr = get_icon("increment");
        Ref<Texture> decr = get_icon("decrement");
        Ref<Texture> menu = get_icon("menu");
        Ref<Texture> menu_hl = get_icon("menu_hl");
        Ref<Font> font = get_font("font");
        Color color_fg = get_color("font_color_fg");
        Color color_bg = get_color("font_color_bg");

        int side_margin = get_constant("side_margin");
        int top_margin = _get_top_margin();


        Size2 top_size = Size2( size.width, top_margin );



        int w=0;
        int idx=0;
        Vector<int> offsets;
        Vector<Control*> controls;
        int from=0;
        int limit=get_size().width;
        if (popup) {
            top_size.width-=menu->get_width();
            limit-=menu->get_width();
        }

        bool notdone=false;
        last_tab_cache=-1;

        for(int i=0; i<get_child_count(); i++) {

            Control *c = get_child(i)->cast_to<Control>();
            if (!c)
                continue;
            if (c->is_set_as_toplevel())
                continue;
            if (idx<tab_display_ofs) {
                idx++;
                from=idx;
                continue;
            }

            if (w>=get_size().width) {
                buttons_visible_cache=true;
                notdone=true;
                break;
            }

            offsets.push_back(w);
            controls.push_back(c);

            String s = c->has_meta("_tab_name")?String(XL_MESSAGE(String(c->get_meta("_tab_name")))):String(c->get_name());
            w+=font->get_string_size(s).width;
            if (c->has_meta("_tab_icon")) {
                Ref<Texture> icon = c->get_meta("_tab_icon");
                if (icon.is_valid()) {
                    w+=icon->get_width();
                    if (s!="")
                        w+=get_constant("hseparation");

                }
            }

            if (idx==current) {

                w+=tab_fg->get_minimum_size().width;
            } else {
                w+=tab_bg->get_minimum_size().width;
            }

            if (idx<tab_display_ofs) {

            }
            last_tab_cache=idx;

            idx++;
        }


        int ofs;

        switch(align) {

        case ALIGN_LEFT:
            ofs = side_margin;
            break;
        case ALIGN_CENTER:
            ofs = (int(limit) - w)/2;
            break;
        case ALIGN_RIGHT:
            ofs = int(limit) - w - side_margin;
            break;
        };

        tab_display_ofs=0;


        tabs_ofs_cache=ofs;
        idx=0;



        for(int i=0; i<controls.size(); i++) {

            idx=i+from;
            if (current>=from && current<from+controls.size()-1) {
                //current is visible! draw it last.
                if (i==controls.size()-1) {
                    idx=current;
                } else if (idx>=current) {
                    idx+=1;
                }
            }

            Control *c = controls[idx-from];

            String s = c->has_meta("_tab_name")?String(c->get_meta("_tab_name")):String(c->get_name());
            int w=font->get_string_size(s).width;
            Ref<Texture> icon;
            if (c->has_meta("_tab_icon")) {
                icon = c->get_meta("_tab_icon");
                if (icon.is_valid()) {

                    w+=icon->get_width();
                    if (s!="")
                        w+=get_constant("hseparation");

                }
            }


            Ref<StyleBox> sb;
            Color col;

            if (idx==current) {

                sb=tab_fg;
                col=color_fg;
            } else {
                sb=tab_bg;
                col=color_bg;
            }

            int lofs = ofs + offsets[idx-from];

            Size2i sb_ms = sb->get_minimum_size();
            Rect2 sb_rect = Rect2( lofs, 0, w+sb_ms.width, top_margin);


            sb->draw(ci, sb_rect );

            Point2i lpos = sb_rect.pos;
            lpos.x+=sb->get_margin(MARGIN_LEFT);
            if (icon.is_valid()) {

                icon->draw(ci, Point2i( lpos.x, sb->get_margin(MARGIN_TOP)+((sb_rect.size.y-sb_ms.y)-icon->get_height())/2 ) );
                if (s!="")
                    lpos.x+=icon->get_width()+get_constant("hseparation");

            }

            font->draw(ci, Point2i( lpos.x, sb->get_margin(MARGIN_TOP)+((sb_rect.size.y-sb_ms.y)-font->get_height())/2+font->get_ascent() ), s, col );

            idx++;
        }


        if (buttons_visible_cache) {

            int vofs = (top_margin-incr->get_height())/2;
            decr->draw(ci,Point2(limit,vofs),Color(1,1,1,tab_display_ofs==0?0.5:1.0));
            incr->draw(ci,Point2(limit+incr->get_width(),vofs),Color(1,1,1,notdone?1.0:0.5));
        }

        if (popup) {
            int from = get_size().width-menu->get_width();

            if (mouse_x_cache > from)
                menu_hl->draw(get_canvas_item(),Size2(from,0));
            else
                menu->draw(get_canvas_item(),Size2(from,0));
        }

        panel->draw(ci, Rect2( 0, top_size.height, size.width, size.height-top_size.height));

    }
    break;
    case NOTIFICATION_THEME_CHANGED: {
        if (get_tab_count() > 0) {
            call_deferred("set_current_tab",get_current_tab()); //wait until all changed theme
        }
    }
    break;
    }
}
Beispiel #3
0
void TabContainer::_notification(int p_what) {

	switch (p_what) {

		case NOTIFICATION_DRAW: {

			RID canvas = get_canvas_item();
			Size2 size = get_size();

			// Draw only the tab area if the header is hidden.
			Ref<StyleBox> panel = get_stylebox("panel");
			if (!tabs_visible) {
				panel->draw(canvas, Rect2(0, 0, size.width, size.height));
				return;
			}

			Vector<Control *> tabs = _get_tabs();
			Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
			Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
			Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
			Ref<Texture> increment = get_icon("increment");
			Ref<Texture> decrement = get_icon("decrement");
			Ref<Texture> menu = get_icon("menu");
			Ref<Texture> menu_hl = get_icon("menu_hl");
			Ref<Font> font = get_font("font");
			Color font_color_fg = get_color("font_color_fg");
			Color font_color_bg = get_color("font_color_bg");
			Color font_color_disabled = get_color("font_color_disabled");
			int side_margin = get_constant("side_margin");
			int icon_text_distance = get_constant("hseparation");

			// Find out start and width of the header area.
			int header_x = side_margin;
			int header_width = size.width - side_margin * 2;
			int header_height = _get_top_margin();
			if (popup)
				header_width -= menu->get_width();

			// Check if all tabs would fit into the header area.
			int all_tabs_width = 0;
			for (int i = 0; i < tabs.size(); i++) {
				int tab_width = _get_tab_width(i);
				all_tabs_width += tab_width;

				if (all_tabs_width > header_width) {
					// Not all tabs are visible at the same time - reserve space for navigation buttons.
					buttons_visible_cache = true;
					header_width -= decrement->get_width() + increment->get_width();
					break;
				} else {
					buttons_visible_cache = false;
				}
			}
			// With buttons, a right side margin does not need to be respected.
			if (popup || buttons_visible_cache) {
				header_width += side_margin;
			}

			// Go through the visible tabs to find the width they occupy.
			all_tabs_width = 0;
			Vector<int> tab_widths;
			for (int i = first_tab_cache; i < tabs.size(); i++) {
				int tab_width = _get_tab_width(i);
				if (all_tabs_width + tab_width > header_width && tab_widths.size() > 0)
					break;
				all_tabs_width += tab_width;
				tab_widths.push_back(tab_width);
			}

			// Find the offset at which to draw tabs, according to the alignment.
			switch (align) {
				case ALIGN_LEFT:
					tabs_ofs_cache = header_x;
					break;
				case ALIGN_CENTER:
					tabs_ofs_cache = header_x + (header_width / 2) - (all_tabs_width / 2);
					break;
				case ALIGN_RIGHT:
					tabs_ofs_cache = header_x + header_width - all_tabs_width;
					break;
			}

			// Draw all visible tabs.
			int x = 0;
			for (int i = 0; i < tab_widths.size(); i++) {
				Ref<StyleBox> tab_style;
				Color font_color;
				if (get_tab_disabled(i + first_tab_cache)) {
					tab_style = tab_disabled;
					font_color = font_color_disabled;
				} else if (i + first_tab_cache == current) {
					tab_style = tab_fg;
					font_color = font_color_fg;
				} else {
					tab_style = tab_bg;
					font_color = font_color_bg;
				}

				// Draw the tab background.
				int tab_width = tab_widths[i];
				Rect2 tab_rect(tabs_ofs_cache + x, 0, tab_width, header_height);
				tab_style->draw(canvas, tab_rect);

				// Draw the tab contents.
				Control *control = tabs[i + first_tab_cache]->cast_to<Control>();
				String text = control->has_meta("_tab_name") ? String(tr(String(control->get_meta("_tab_name")))) : String(control->get_name());

				int x_content = tab_rect.position.x + tab_style->get_margin(MARGIN_LEFT);
				int top_margin = tab_style->get_margin(MARGIN_TOP);
				int y_center = top_margin + (tab_rect.size.y - tab_style->get_minimum_size().y) / 2;

				// Draw the tab icon.
				if (control->has_meta("_tab_icon")) {
					Ref<Texture> icon = control->get_meta("_tab_icon");
					if (icon.is_valid()) {
						int y = y_center - (icon->get_height() / 2);
						icon->draw(canvas, Point2i(x_content, y));
						if (text != "")
							x_content += icon->get_width() + icon_text_distance;
					}
				}

				// Draw the tab text.
				Point2i text_pos(x_content, y_center - (font->get_height() / 2) + font->get_ascent());
				font->draw(canvas, text_pos, text, font_color);

				x += tab_width;
				last_tab_cache = i + first_tab_cache;
			}

			// Draw the popup menu.
			x = get_size().width;
			if (popup) {
				x -= menu->get_width();
				if (mouse_x_cache > x)
					menu_hl->draw(get_canvas_item(), Size2(x, 0));
				else
					menu->draw(get_canvas_item(), Size2(x, 0));
			}

			// Draw the navigation buttons.
			if (buttons_visible_cache) {
				int y_center = header_height / 2;

				x -= increment->get_width();
				increment->draw(canvas,
						Point2(x, y_center - (increment->get_height() / 2)),
						Color(1, 1, 1, last_tab_cache < tabs.size() - 1 ? 1.0 : 0.5));

				x -= decrement->get_width();
				decrement->draw(canvas,
						Point2(x, y_center - (decrement->get_height() / 2)),
						Color(1, 1, 1, first_tab_cache > 0 ? 1.0 : 0.5));
			}

			// Draw the tab area.
			panel->draw(canvas, Rect2(0, header_height, size.width, size.height - header_height));
		} break;
		case NOTIFICATION_THEME_CHANGED: {
			if (get_tab_count() > 0) {
				call_deferred("set_current_tab", get_current_tab()); //wait until all changed theme
			}
		} break;
	}
}