C++ TBarView::Expando方法代码示例

void
TWindowMenu::DetachedFromWindow()
{
	// in expando mode the teammenu will not call DragStop,
	// thus, it needs to be called from here
	TBarView* barview = (dynamic_cast<TBarApp*>(be_app))->BarView();
	if (barview && barview->Expando() && barview->Dragging()
		&& barview->LockLooper()) {
		// We changed the show level in AttachedToWindow().  Undo it.
		Window()->Show();
		barview->DragStop();
		barview->UnlockLooper();
	}

	BMenu::DetachedFromWindow();
}

void
TWindowMenu::AttachedToWindow()
{
	SetFont(be_plain_font);

	RemoveItems(0, CountItems(), true);

	int32 miniCount = 0;

	bool dragging = false;
	TBarView* barview =(static_cast<TBarApp*>(be_app))->BarView();
	if (barview && barview->LockLooper()) {
		//	'dragging' mode set in BarView::CacheDragData
		//		invoke in MouseEnter in ExpandoMenuBar
		dragging = barview->Dragging();
		if (dragging) {
			// We don't want to show the menu when dragging, but it's not
			// possible to remove a submenu once it exists, so we simply hide it
			// Don't call BMenu::Hide(), it causes the menu to pop up every now
			// and then.
			Window()->Hide();
			//	if in expando (horizontal or vertical)
			if (barview->Expando()) {
				SetTrackingHook(barview->MenuTrackingHook,
					barview->GetTrackingHookData());
			}
			barview->DragStart();
		}
		barview->UnlockLooper();
	}

	int32 parentMenuItems = 0;

	int32 numTeams = fTeam->CountItems();
	for (int32 i = 0; i < numTeams; i++) {
		team_id	theTeam = (team_id)fTeam->ItemAt(i);
		int32 count = 0;
		int32* tokens = get_token_list(theTeam, &count);

		for (int32 j = 0; j < count; j++) {
			client_window_info* wInfo = get_window_info(tokens[j]);
			if (wInfo == NULL)
				continue;

			if (WindowShouldBeListed(wInfo->feel)
				&& (wInfo->show_hide_level <= 0 || wInfo->is_mini)) {
				// Don't add new items if we're expanded. We've already done
				// this, they've just been moved.
				int32 numItems = CountItems();
				int32 addIndex = 0;
				for (; addIndex < numItems; addIndex++)
					if (strcasecmp(ItemAt(addIndex)->Label(), wInfo->name) > 0)
						break;

				if (!fExpanded) {
					TWindowMenuItem* item = new TWindowMenuItem(wInfo->name,
						wInfo->server_token, wInfo->is_mini,
						((1 << current_workspace()) & wInfo->workspaces) != 0,
						dragging);

					// disable app's window dropping for now
					if (dragging)
						item->SetEnabled(false);

					AddItem(item,
						TWindowMenuItem::InsertIndexFor(this, 0, item));
				} else {
					TTeamMenuItem* parentItem
						= static_cast<TTeamMenuItem*>(Superitem());
					if (parentItem->ExpandedWindowItem(wInfo->server_token)) {
						TWindowMenuItem* item = parentItem->ExpandedWindowItem(
							wInfo->server_token);
						if (item == NULL)
							continue;

						item->SetTo(wInfo->name, wInfo->server_token,
							wInfo->is_mini,
							((1 << current_workspace()) & wInfo->workspaces)
								!= 0, dragging);
						parentMenuItems++;
					}
				}

				if (wInfo->is_mini)
					miniCount++;
			}
			free(wInfo);
		}
		free(tokens);
	}

	int32 itemCount = CountItems() + parentMenuItems;
	if (itemCount < 1) {
		TWindowMenuItem* noWindowsItem =
 			new TWindowMenuItem("No windows", -1, false, false);

		noWindowsItem->SetEnabled(false);

		AddItem(noWindowsItem);

//.........这里部分代码省略.........