# transparency.h

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #ifndef TRANSPARENCY_H
    00013 #define TRANSPARENCY_H
    00014
    00015 #include "gfx_func.h"
    00016 #include "openttd.h"
    00017 #include "core/bitmath_func.hpp"
    00018
    00024 enum TransparencyOption {
    00025   TO_SIGNS = 0,
    00026   TO_TREES,
    00027   TO_HOUSES,
    00028   TO_INDUSTRIES,
    00029   TO_BUILDINGS,
    00030   TO_BRIDGES,
    00031   TO_STRUCTURES,
    00032   TO_CATENARY,
    00033   TO_LOADING,
    00034   TO_END,
    00035 };
    00036
    00037 typedef uint TransparencyOptionBits;
    00038 extern TransparencyOptionBits _transparency_opt;
    00039 extern TransparencyOptionBits _transparency_lock;
    00040 extern TransparencyOptionBits _invisibility_opt;
    00041 extern byte _display_opt;
    00042
    00049 static inline bool IsTransparencySet(TransparencyOption to)
    00050 {
    00051   return (HasBit(_transparency_opt, to) && _game_mode != GM_MENU);
    00052 }
    00053
    00060 static inline bool IsInvisibilitySet(TransparencyOption to)
    00061 {
    00062   return (HasBit(_transparency_opt & _invisibility_opt, to) && _game_mode != GM_MENU);
    00063 }
    00064
    00070 static inline void ToggleTransparency(TransparencyOption to)
    00071 {
    00072   ToggleBit(_transparency_opt, to);
    00073 }
    00074
    00080 static inline void ToggleInvisibility(TransparencyOption to)
    00081 {
    00082   ToggleBit(_invisibility_opt, to);
    00083 }
    00084
    00092 static inline void ToggleInvisibilityWithTransparency(TransparencyOption to)
    00093 {
    00094   if (IsInvisibilitySet(to)) {
    00095     ClrBit(_invisibility_opt, to);
    00096     ClrBit(_transparency_opt, to);
    00097   } else {
    00098     SetBit(_invisibility_opt, to);
    00099     SetBit(_transparency_opt, to);
    00100   }
    00101 }
    00102
    00108 static inline void ToggleTransparencyLock(TransparencyOption to)
    00109 {
    00110   ToggleBit(_transparency_lock, to);
    00111 }
    00112
    00114 static inline void ResetRestoreAllTransparency()
    00115 {
    00116   /* if none of the non-locked options are set */
    00117   if ((_transparency_opt & ~_transparency_lock) == 0) {
    00118     /* set all non-locked options */
    00119     _transparency_opt |= GB(~_transparency_lock, 0, TO_END);
    00120   } else {
    00121     /* clear all non-locked options */
    00122     _transparency_opt &= _transparency_lock;
    00123   }
    00124
    00125   MarkWholeScreenDirty();
    00126 }
    00127
    00128 #endif /* TRANSPARENCY_H */