Method _setItemChildVisibleAt

MyGUIEngine/src/MyGUI_MenuControl.cpp:326–388

	}

	void MenuControl::_setItemChildVisibleAt(size_t _index, bool _visible, bool _smooth)
	{
		MYGUI_ASSERT_RANGE(_index, mItemsInfo.size(), "MenuControl::setItemChildVisibleAt");

		if (_visible)
		{
			if (mItemsInfo[_index].submenu && mItemsInfo[_index].submenu->getItemCount())
			{
				int offset = mItemsInfo[0].item->getAbsoluteTop() - getAbsoluteTop();

				const IntCoord& coord = mItemsInfo[_index].item->getAbsoluteCoord();
				IntPoint point(getAbsoluteRect().right, coord.top - offset);

				MenuControl* menu = mItemsInfo[_index].submenu;

				if (mVerticalAlignment)
				{
					// too wide
					if (point.left + menu->getWidth() > menu->getParentSize().width)
					{
						// move to the left side if possible
						if (point.left - menu->getWidth() - getWidth() >= 0)
							point.left -= menu->getWidth() + getWidth();
						// or put near right parent border (window) if too wide for left side too
						else
							point.left = menu->getParentSize().width - menu->getWidth();
					}
					// too high
					if (point.top + menu->getHeight() > menu->getParentSize().height)
					{
						// move to the top side if possible
						if (getBottom() - menu->getHeight() >= 0)
							point.top = getBottom() - menu->getHeight();
						// or put near bottom parent border (window) if too high for top side too
						else
							point.top = menu->getParentSize().height - menu->getHeight();
					}
				}
				else
				{
					point.set(coord.left, getAbsoluteRect().bottom);
				}

				menu->setPosition(point);
				if (_smooth)
					menu->setVisibleSmooth(true);
				else
					menu->setVisible(true);

				MyGUI::LayerManager::getInstance().upLayerItem(menu);
			}
		}
		else
		{
			if (mItemsInfo[_index].submenu)
			{
				if (_smooth)
					mItemsInfo[_index].submenu->setVisibleSmooth(false);