Function show

src/OpenLoco/src/Ui/Dropdown.cpp:509–583

* 0x004CC807 * * @param x * @param y * @param width * @param height * @param colour * @param count * @param itemHeight * @param flags * Custom Dropdown height if flags & (1<<6) is true */

     * Custom Dropdown height if flags & (1<<6) is true
     */
    void show(int16_t x, int16_t y, int16_t width, int16_t height, AdvancedColour colour, size_t count, uint8_t itemHeight, uint8_t flags)
    {
        assert(count < std::numeric_limits<uint8_t>::max());

        common::setColourAndInputFlags(colour, flags);

        WindowManager::close(WindowType::dropdown, 0);
        _dropdownFlags = Flags::none;

        _dropdownColumnCount = 1;
        _dropdownItemWidth = 0;
        _dropdownItemWidth = width;
        _dropdownItemHeight = 10;

        if (flags & (1 << 6))
        {
            _dropdownItemHeight = itemHeight;
        }

        flags &= ~(1 << 6);

        _dropdownItemCount = static_cast<uint16_t>(count);
        _dropdownRowCount = 0;
        _dropdownRowCount = static_cast<uint32_t>(count);

        int16_t dropdownHeight = (static_cast<int16_t>(count) * _dropdownItemHeight) + 3;
        common::widgets[0].bottom = dropdownHeight;
        dropdownHeight++;
        Ui::Size size = { width, height };
        Ui::Point origin = { x, y };
        origin.y += height;

        size.height = dropdownHeight;
        if ((size.height + origin.y) > Ui::height() || origin.y < 0)
        {
            origin.y -= (height + dropdownHeight);
            auto dropdownBottom = origin.y;

            if (origin.y >= 0)
            {
                dropdownBottom = origin.y + dropdownHeight;
            }

            if (origin.y < 0 || dropdownBottom > Ui::height())
            {
                origin.x += width + 3;
                origin.y = 0;
            }
        }

        size.width = width + 3;
        common::widgets[0].right = size.width;
        size.width++;

        if (origin.x < 0)
        {
            origin.x = 0;
        }