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Suzy B Software 2
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Suzy B Software CD-ROM 2 (1994).iso
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gemfsc20
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gemfsc20.lzh
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GEMFUNCS
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OBJFLCHG.C
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C/C++ Source or Header
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1993-03-20
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2KB
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56 lines
/**************************************************************************
* OBJFLCHG.C - Change object options, with optional redraw.
*************************************************************************/
#include "gemfintl.h"
#ifdef GEMFAST_PROTOS
void obj_flchange(OBJECT *ptree, short object, short newflags,
short drawflag, ...)
#else
void obj_flchange(ptree, object, newflags, drawflag)
register OBJECT *ptree;
short object;
short newflags;
short drawflag;
#endif
{
GRECT *optional_clip; /* present only if drawflag==OBJ_CLIPDRAW */
GRECT clip_rect;
va_list args;
va_start(args, drawflag);
optional_clip = va_arg(args, GRECT *);
va_end(args);
/*
* check the newflags value. if the high bit is set, AND the newflags
* with the current options, else OR them.
*/
if (newflags & 0x8000) {
ptree[object].ob_flags &= newflags;
}
else {
ptree[object].ob_flags |= newflags;
}
/*
* if drawflag is true, we need to do a redraw starting at the changed
* object's tree root (this is in case the HIDETREE flag is being changed),
* but the redraw must be clipped by the object we're trying to update.
* if the drawflag indicates a clipping rectangle was passed, the object's
* rectangle is clipped to it.
*/
if (drawflag) {
obj_clcalc(ptree, object, &clip_rect, NULL);
if (drawflag == OBJ_CLIPDRAW) {
rc_intersect(optional_clip, &clip_rect);
}
objc_draw(ptree, R_TREE, MAX_DEPTH, RECTVALS(&clip_rect));
}
}