Function viewportRedrawAfterShift

src/OpenLoco/src/Ui/WindowManager.cpp:1517–1635

* 0x004C6B09 * * @param edi @ * @param x @ * @param y @ * @param viewport @ */

     * @param viewport @<esi>
     */
    void viewportRedrawAfterShift(Window* window, Viewport* viewport, int32_t x, int32_t y)
    {
        while (window != nullptr)
        {
            // skip current window and non-intersecting windows
            if (viewport == window->viewports[0]
                || viewport == window->viewports[1]
                || viewport->x + viewport->width <= window->x
                || viewport->x >= window->x + window->width
                || viewport->y + viewport->height <= window->y
                || viewport->y >= window->y + window->height)
            {
                size_t nextWindowIndex = WindowManager::indexOf(*window) + 1;
                window = nextWindowIndex >= count() ? nullptr : WindowManager::get(nextWindowIndex);
                continue;
            }

            // save viewport
            Ui::Viewport viewCopy = *viewport;

            if (viewport->x < window->x)
            {
                viewport->width = window->x - viewport->x;
                viewport->viewWidth = viewport->width << viewport->zoom;
                viewportRedrawAfterShift(window, viewport, x, y);

                viewport->x += viewport->width;
                viewport->viewX += viewport->width << viewport->zoom;
                viewport->width = viewCopy.width - viewport->width;
                viewport->viewWidth = viewport->width << viewport->zoom;
                viewportRedrawAfterShift(window, viewport, x, y);
            }
            else if (viewport->x + viewport->width > window->x + window->width)
            {
                viewport->width = window->x + window->width - viewport->x;
                viewport->viewWidth = viewport->width << viewport->zoom;
                viewportRedrawAfterShift(window, viewport, x, y);

                viewport->x += viewport->width;
                viewport->viewX += viewport->width << viewport->zoom;
                viewport->width = viewCopy.width - viewport->width;
                viewport->viewWidth = viewport->width << viewport->zoom;
                viewportRedrawAfterShift(window, viewport, x, y);
            }
            else if (viewport->y < window->y)
            {
                viewport->height = window->y - viewport->y;
                viewport->viewHeight = viewport->height << viewport->zoom;
                viewportRedrawAfterShift(window, viewport, x, y);

                viewport->y += viewport->height;
                viewport->viewY += viewport->height << viewport->zoom;
                viewport->height = viewCopy.height - viewport->height;
                viewport->viewHeight = viewport->height << viewport->zoom;
                viewportRedrawAfterShift(window, viewport, x, y);
            }
            else if (viewport->y + viewport->height > window->y + window->height)
            {