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(svn r12102) -Feature: Allow locking individual transparency settings so they will not be changed by pressing 'x'. (Roujin)

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maedhros
2008-02-10 14:49:44 +00:00
parent e075cf5500
commit 4e839aacf6
4 changed files with 42 additions and 26 deletions
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30
src/transparency.h
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@@ -28,6 +28,7 @@ enum TransparencyOption {
typedef byte TransparencyOptionBits; ///< transparency option bits
extern TransparencyOptionBits _transparency_opt;
extern TransparencyOptionBits _transparency_lock;
/**
* Check if the transparency option bit is set
@@ -43,26 +44,33 @@ static inline bool IsTransparencySet(TransparencyOption to)
/**
* Toggle the transparency option bit
*
* @param to the structure which transparency option is toggle
* @param to the transparency option to be toggled
*/
static inline void ToggleTransparency(TransparencyOption to)
{
ToggleBit(_transparency_opt, to);
}
/** Toggle all transparency options (except signs) or restore the stored transparencies */
/**
* Toggle the transparency lock bit
*
* @param to the transparency option to be locked or unlocked
*/
static inline void ToggleTransparencyLock(TransparencyOption to)
{
ToggleBit(_transparency_lock, to);
}
/** Set or clear all non-locked transparency options */
static inline void ResetRestoreAllTransparency()
{
/* backup of the original transparencies or if all transparencies false toggle them to true */
static TransparencyOptionBits trans_opt = ~0;
if (_transparency_opt == 0) {
/* no structure is transparent, so restore the old transparency if present otherwise set all true */
_transparency_opt = trans_opt;
/* if none of the non-locked options are set */
if ((_transparency_opt & ~_transparency_lock) == 0) {
/* set all non-locked options */
_transparency_opt |= ~_transparency_lock;
} else {
/* any structure is transparent, so store current transparency settings and reset it */
trans_opt = _transparency_opt;
_transparency_opt = 0;
/* clear all non-locked options */
_transparency_opt &= _transparency_lock;
}
MarkWholeScreenDirty();