/* $Id$ */

/** @file tilehighlight_type.h Types related to highlighting tiles. */

#ifndef TILEHIGHLIGHT_TYPE_H
#define TILEHIGHLIGHT_TYPE_H

#include "core/geometry_type.hpp"
#include "zoom_type.h"
#include "window_type.h"
#include "tile_type.h"

/** Viewport highlight mode (for highlighting tiles below cursor) */
enum ViewportHighlightMode {
	VHM_NONE    = 0, ///< default
	VHM_RECT    = 1, ///< rectangle (stations, depots, ...)
	VHM_POINT   = 2, ///< point (lower land, raise land, level land, ...)
	VHM_SPECIAL = 3, ///< special mode used for highlighting while dragging (and for tunnels/docks)
	VHM_DRAG    = 4, ///< dragging items in the depot windows
	VHM_RAIL    = 5, ///< rail pieces
};

/** Highlighting draw styles */
enum HighLightStyle {
	HT_NONE   = 0x00,
	HT_RECT   = 0x80,
	HT_POINT  = 0x40,
	HT_LINE   = 0x20,    ///< used for autorail highlighting (longer streches)
	                     ///< (uses lower bits to indicate direction)
	HT_RAIL   = 0x10,    ///< autorail (one piece)
	                     ///< (uses lower bits to indicate direction)
	HT_DRAG_MASK = 0xF0, ///< masks the drag-type

	/* lower bits (used with HT_LINE and HT_RAIL):
	 * (see ASCII art in autorail.h for a visual interpretation) */
	HT_DIR_X  = 0,    ///< X direction
	HT_DIR_Y  = 1,    ///< Y direction
	HT_DIR_HU = 2,    ///< horizontal upper
	HT_DIR_HL = 3,    ///< horizontal lower
	HT_DIR_VL = 4,    ///< vertical left
	HT_DIR_VR = 5,    ///< vertical right
	HT_DIR_MASK = 0x7 ///< masks the drag-direction
};
DECLARE_ENUM_AS_BIT_SET(HighLightStyle);


struct TileHighlightData {
	Point size;
	Point outersize;
	Point pos;
	Point offs;

	Point new_pos;
	Point new_size;
	Point new_outersize;

	Point selend, selstart;

	byte dirty;
	byte sizelimit;

	byte drawstyle;      // lower bits 0-3 are reserved for detailed highlight information information
	byte new_drawstyle;  // only used in UpdateTileSelection() to as a buffer to compare if there was a change between old and new
	byte next_drawstyle; // queued, but not yet drawn style

	ViewportHighlightMode place_mode;
	bool make_square_red;
	WindowClass window_class;
	WindowNumber window_number;

	ViewportPlaceMethod select_method;
	ViewportDragDropSelectionProcess select_proc;

	TileIndex redsq;
};

#endif /* TILEHIGHLIGHT_TYPE_H */