EVW_ZOOMOUT,

	EVW_MAIN_TO_VIEW,

	EVW_VIEW_TO_MAIN,

};

/* Extra ViewPort Window Stuff */

static const NWidgetPart _nested_extra_view_port_widgets[] = {

	NWidget(NWID_HORIZONTAL),

		NWidget(WWT_CLOSEBOX, COLOUR_GREY),

		NWidget(WWT_CAPTION, COLOUR_GREY, EVW_CAPTION), SetDataTip(STR_EXTRA_VIEW_PORT_TITLE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),

		NWidget(WWT_SHADEBOX, COLOUR_GREY),

		NWidget(WWT_STICKYBOX, COLOUR_GREY),

	EndContainer(),

	NWidget(WWT_PANEL, COLOUR_GREY),

		NWidget(NWID_VIEWPORT, INVALID_COLOUR, EVW_VIEWPORT), SetPadding(2, 2, 2, 2), SetResize(1, 1), SetFill(1, 1),

	EndContainer(),

	NWidget(NWID_HORIZONTAL),

		NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, EVW_ZOOMIN), SetDataTip(SPR_IMG_ZOOMIN, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_IN),

		NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, EVW_ZOOMOUT), SetDataTip(SPR_IMG_ZOOMOUT, STR_TOOLBAR_TOOLTIP_ZOOM_THE_VIEW_OUT),

		NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),

			NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, EVW_MAIN_TO_VIEW), SetFill(1, 1), SetResize(1, 0),

										SetDataTip(STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW, STR_EXTRA_VIEW_MOVE_MAIN_TO_VIEW_TT),

			NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, EVW_VIEW_TO_MAIN), SetFill(1, 1), SetResize(1, 0),

										SetDataTip(STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN, STR_EXTRA_VIEW_MOVE_VIEW_TO_MAIN_TT),

		EndContainer(),

	EndContainer(),

	NWidget(NWID_HORIZONTAL),

		NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1), SetResize(1, 0), EndContainer(),

		NWidget(WWT_RESIZEBOX, COLOUR_GREY),

	EndContainer(),

};

class ExtraViewportWindow : public Window {

public:

	ExtraViewportWindow(const WindowDesc *desc, int window_number, TileIndex tile) : Window()

	{

		this->InitNested(desc, window_number);

		NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(EVW_VIEWPORT);

		nvp->InitializeViewport(this, 0, ZOOM_LVL_NORMAL);

		this->DisableWidget(EVW_ZOOMIN);

		Point pt;

		if (tile == INVALID_TILE) {

			/* the main window with the main view */

			const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);

			/* center on same place as main window (zoom is maximum, no adjustment needed) */

			pt.y = w->viewport->scrollpos_y + w->viewport->virtual_height / 2;

		} else {

			pt = RemapCoords(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, TileHeight(tile));

		}

		this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;

		this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;

	}

	virtual void SetStringParameters(int widget) const

	{

		switch (widget) {

			case EVW_CAPTION:

				/* set the number in the title bar */

				SetDParam(0, this->window_number + 1);

				break;

		}

	}

	virtual void OnPaint()

	{

		this->DrawWidgets();

	}

	virtual void OnClick(Point pt, int widget)

	{

		switch (widget) {

			case EVW_ZOOMIN: DoZoomInOutWindow(ZOOM_IN,  this); break;

			case EVW_ZOOMOUT: DoZoomInOutWindow(ZOOM_OUT, this); break;

			case EVW_MAIN_TO_VIEW: { // location button (move main view to same spot as this view) 'Paste Location'

				Window *w = FindWindowById(WC_MAIN_WINDOW, 0);

				int x = this->viewport->scrollpos_x; // Where is the main looking at

				int y = this->viewport->scrollpos_y;

				/* set this view to same location. Based on the center, adjusting for zoom */

				w->viewport->dest_scrollpos_x =  x - (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;

				w->viewport->dest_scrollpos_y =  y - (w->viewport->virtual_height - this->viewport->virtual_height) / 2;

				w->viewport->follow_vehicle   = INVALID_VEHICLE;

			} break;

			case EVW_VIEW_TO_MAIN: { // inverse location button (move this view to same spot as main view) 'Copy Location'

				const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);

				int x = w->viewport->scrollpos_x;

				int y = w->viewport->scrollpos_y;

				this->viewport->dest_scrollpos_x =  x + (w->viewport->virtual_width -  this->viewport->virtual_width) / 2;

				this->viewport->dest_scrollpos_y =  y + (w->viewport->virtual_height - this->viewport->virtual_height) / 2;

			} break;

		}

	}

	virtual void OnResize()