belugas@8345: /* $Id$ */
belugas@8345: 
belugas@8345: /** @file transparency.h */
belugas@8345: 
belugas@8345: #ifndef TRANSPARENCY_H
belugas@8345: #define TRANSPARENCY_H
belugas@8345: 
rubidium@8619: #include "gfx_func.h"
rubidium@8619: 
belugas@8345: /**
belugas@8345:  * Transparency option bits: which position in _transparency_opt stands for which transparency.
belugas@8345:  * If you change the order, change the order of the ShowTransparencyToolbar() stuff in transparency_gui.cpp too.
belugas@8345:  * If you add or remove an option don't forget to change the transparency 'hot keys' in main_gui.cpp.
belugas@8345:  * If you add an option and have more then 8, change the typedef TransparencyOptionBits and
belugas@8345:  * the save stuff (e.g. SLE_UINT8 to SLE_UINT16) in settings.cpp .
belugas@8345:  */
belugas@8345: enum TransparencyOption {
belugas@8345: 	TO_SIGNS = 0,  ///< signs
belugas@8345: 	TO_TREES,      ///< trees
belugas@8345: 	TO_HOUSES,     ///< town buildings
belugas@8345: 	TO_INDUSTRIES, ///< industries
belugas@8345: 	TO_BUILDINGS,  ///< player buildings - depots, stations, HQ, ...
belugas@8345: 	TO_BRIDGES,    ///< bridges
belugas@8345: 	TO_STRUCTURES, ///< unmovable structures
belugas@8345: 	TO_LOADING,    ///< loading indicators
belugas@8345: 	TO_END,
belugas@8345: };
belugas@8345: 
belugas@8345: typedef byte TransparencyOptionBits; ///< transparency option bits
belugas@8345: extern TransparencyOptionBits _transparency_opt;
belugas@8345: 
belugas@8345: /**
belugas@8345:  * Check if the transparency option bit is set
belugas@8345:  * and if we aren't in the game menu (there's never transparency)
belugas@8345:  *
belugas@8345:  * @param to the structure which transparency option is ask for
belugas@8345:  */
belugas@8345: static inline bool IsTransparencySet(TransparencyOption to)
belugas@8345: {
skidd13@8424: 	return (HasBit(_transparency_opt, to) && _game_mode != GM_MENU);
belugas@8345: }
belugas@8345: 
belugas@8345: /**
belugas@8345:  * Toggle the transparency option bit
belugas@8345:  *
belugas@8345:  * @param to the structure which transparency option is toggle
belugas@8345:  */
belugas@8345: static inline void ToggleTransparency(TransparencyOption to)
belugas@8345: {
skidd13@8428: 	ToggleBit(_transparency_opt, to);
belugas@8345: }
belugas@8345: 
belugas@8345: /** Toggle all transparency options (except signs) or restore the stored transparencies */
belugas@8345: static inline void ResetRestoreAllTransparency()
belugas@8345: {
belugas@8345: 	/* backup of the original transparencies or if all transparencies false toggle them to true */
belugas@8345: 	static TransparencyOptionBits trans_opt = ~0;
belugas@8345: 
belugas@8345: 	if (_transparency_opt == 0) {
belugas@8345: 		/* no structure is transparent, so restore the old transparency if present otherwise set all true */
belugas@8345: 		_transparency_opt = trans_opt;
belugas@8345: 	} else {
belugas@8345: 		/* any structure is transparent, so store current transparency settings and reset it */
belugas@8345: 		trans_opt = _transparency_opt;
belugas@8345: 		_transparency_opt = 0;
belugas@8345: 	}
belugas@8345: 
belugas@8345: 	MarkWholeScreenDirty();
belugas@8345: }
belugas@8345: 
belugas@8345: #endif /* TRANSPARENCY_H */