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|
#define PRO9517 /*GG_280897
// Ameliorer le critere de comparaison de 2 couleurs
// sinon ROUGE = VERT = BLEU !!!
*/
#include <Xw_Extension.h>
/* ifdef then trace on */
#ifdef TRACE
#define TRACE_GET_COLOR_INDEX
#endif
/*
STATUS Xw_get_color_index(acolormap,r,g,b,index):
XW_EXT_COLORMAP *acolormap Colormap extension structure
float r,g,b ; Red,Green,Blue color value 0. >= x <= 1.
int *index ; Return Color index 0 >= x < MAXCOLOR
Gets the nearest color index from R,G,B Color values.
Returns ERROR if BadColor Index or color is not defined
Returns SUCCESS if Successful
*/
#define XTEST 1
#ifdef TEST /* Optim. No more necessary with XQueryColors() */
#define MAX_COLRS 256
static int indice = 0;
static int indice_max = 0;
static XW_EXT_COLORMAP *qcolormap = NULL;
static float tab_ind[MAX_COLRS][4];
#endif
#ifdef XW_PROTOTYPE
XW_STATUS Xw_get_color_index(void* acolormap,float r,float g,float b,int* index)
#else
XW_STATUS Xw_get_color_index(acolormap,r,g,b,index)
void *acolormap ;
float r,g,b ;
int *index ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_COLORMAP *pcolormap = (XW_EXT_COLORMAP*)acolormap ;
XW_STATUS status = XW_ERROR ;
XColor colors[MAXCOLOR] ;
int color_indexs[MAXCOLOR] ;
register int i,j,n ;
int curind = -1,freeind = -1,isapproximate ;
#ifdef PRO9517
int drmin,dgmin,dbmin;
#else
float curdist,newdist ;
float dr,dg,db ;
#endif
if( !pcolormap ) {
/*ERROR*Bad EXT_COLORMAP Address*/
Xw_set_error( 42,"Xw_get_color_index",pcolormap ) ;
return( XW_ERROR ) ;
}
if( _CCLASS != TrueColor ) {
if( pcolormap->mapping == Xw_TOM_COLORCUBE ) {
if( (_CGINFO.red_mult > 0) && (fabs(r-g) < 0.01) && (fabs(r-b) < 0.01) ) {
curind = (int)(0.5+r*_CGINFO.red_max)*_CGINFO.red_mult;
if( _CINFO.red_max > 0 ) curind += (_CINFO.red_max+1)*(_CINFO.green_max+1)*(_CINFO.blue_max+1);
} else if( _CINFO.red_mult > 0 ) {
curind = ((int)(0.5+r*_CINFO.red_max))*_CINFO.red_mult+
((int)(0.5+g*_CINFO.green_max))*_CINFO.green_mult+
((int)(0.5+b*_CINFO.blue_max))*_CINFO.blue_mult;
} else if( _CGINFO.red_mult > 0 ) {
float l = (r+g+b)/3.;
curind = (int)(0.5+l*_CGINFO.red_max)*_CGINFO.red_mult;
} else {
curind = 0;
}
if( pcolormap->pixels[curind] == curind +_CINFO.base_pixel )
status = XW_SUCCESS ;
else curind = -1 ;
}
}
if( curind < 0 ) {
#ifdef TEST
if (pcolormap != qcolormap) {
for (i=0; i<MAX_COLRS; i++) tab_ind[i][0] = -1.;
qcolormap = pcolormap;
indice_max = 0;
indice = 0;
}
for (i=0; i<indice_max; i++) {
if ( tab_ind[i][0] >= 0. ) {
if ((tab_ind[i][1] == r) &&
(tab_ind[i][2] == g) &&
(tab_ind[i][3] == b)) {
*index = curind = (int) tab_ind[i][0];
status = XW_SUCCESS;
#ifdef TRACE_GET_COLOR_INDEX
if( Xw_get_trace() > 3 ) {
printf(" %d = Xw_get_color_index(%x,%f,%f,%f,=%d/0x%x)\n",
status,pcolormap,r,g,b,curind,pcolormap->pixels[curind]) ;
}
#endif
return (status);
}
}
}
#endif
#ifdef PRO9517
drmin = dgmin = dbmin = 65536;
#else
newdist = 4.0 ;
curdist = 4.0 ;
#endif
curind = -1 ;
for( i=n=0 ; i<pcolormap->maxcolor ; i++ ) {
if( Xw_isdefine_color( pcolormap,i ) == XW_SUCCESS ) {
if( n < pcolormap->maxhcolor ) {
colors[n].pixel = pcolormap->pixels[i];
color_indexs[n] = i;
n++;
} else {
for( j=0 ; j<n ; j++ ) {
if( colors[j].pixel == pcolormap->pixels[i] ) break;
}
if( j >= n ) {
/* Too many entrys in the virtual colormap */
Xw_set_error(129,"Xw_get_color_index",pcolormap ) ;
}
}
} else {
if( freeind < 0 ) freeind = i ;
}
}
if( _CCLASS != TrueColor ) {
if( n > 0 ) {
XQueryColors(_CDISPLAY,_CINFO.colormap,colors,n) ;
#ifdef PRO9517
{
unsigned long rred = (long unsigned int )( r * 0xFFFF);
unsigned long rgreen = (long unsigned int )( g * 0xFFFF);
unsigned long rblue = (long unsigned int )( b * 0xFFFF);
int dr,dg,db;
for( i=0 ; i<n ; i++ ){
//#if defined(_AIX) || defined(__hpux)
int aLocalInt = rred - colors[i].red ; dr = abs( aLocalInt ) >> 8;
aLocalInt = rgreen - colors[i].green ; dg = abs( aLocalInt ) >> 8;
aLocalInt = rblue - colors[i].blue ; db = abs( aLocalInt ) >> 8;
//#else
// dr = abs( rred - colors[i].red ) >> 8;
// dg = abs( rgreen - colors[i].green ) >> 8;
// db = abs( rblue - colors[i].blue ) >> 8;
//#endif
if( (dr <= drmin) && (dg <= dgmin) && (db <= dbmin) ) {
drmin = dr; dgmin = dg; dbmin = db;
curind = color_indexs[i];
if( !dr && !dg && !db ) break;
}
}
}
#else
for( i=0 ; ((i<n) && (newdist != 0.0)) ; i++ ){
dr = (float)colors[i].red/0xFFFF - r ;
dg = (float)colors[i].green/0xFFFF - g ;
db = (float)colors[i].blue/0xFFFF - b ;
newdist = dr*dr + dg*dg + db*db ;
if( newdist < curdist ) {
curind = color_indexs[i] ;
curdist = newdist ;
}
}
#endif
}
} else {
if( n > 0 ) {
// unsigned long mask = _CVISUAL->map_entries-1 ;
unsigned long red,green,blue,rmask,gmask,bmask ;
#ifdef PRO9517
{
unsigned long rred = (long unsigned int )( r * (1 << _CVISUAL->bits_per_rgb) - 1);
unsigned long rgreen = (long unsigned int )( g * (1 << _CVISUAL->bits_per_rgb) - 1);
unsigned long rblue = (long unsigned int )( b * (1 << _CVISUAL->bits_per_rgb) - 1);
int dr,dg,db;
for( i=0 ; i<n ; i++ ){
rmask = _CVISUAL->red_mask;
red = colors[i].pixel & rmask ;
while ( !(rmask & 0x01) ) { rmask >>= 1; red >>= 1; }
gmask = _CVISUAL->green_mask;
green = colors[i].pixel & gmask ;
while ( !(gmask & 0x01) ) { gmask >>= 1; green >>= 1; }
bmask = _CVISUAL->blue_mask;
blue = colors[i].pixel & bmask ;
while ( !(bmask & 0x01) ) { bmask >>= 1; blue >>= 1; }
//#if defined(_AIX) || defined(__hpux)
int aLocalInt = rred - red ; dr = abs(aLocalInt);
aLocalInt = rgreen - green ; dg = abs(aLocalInt);
aLocalInt = rblue - blue ; db = abs(aLocalInt);
//#else
// dr = abs( rred - red );
// dg = abs( rgreen - green );
// db = abs( rblue - blue );
//#endif
if( (dr <= drmin) && (dg <= dgmin) && (db <= dbmin) ) {
drmin = dr; dgmin = dg; dbmin = db;
curind = color_indexs[i];
if( !dr && !dg && !db ) break;
}
}
}
#else
for( i=0 ; ((i<n) && (newdist != 0.0)) ; i++ ){
rmask = _CVISUAL->red_mask;
red = colors[i].pixel & rmask ;
while ( !(rmask & 0x01) ) { rmask >>= 1; red >>= 1; }
gmask = _CVISUAL->green_mask;
green = colors[i].pixel & gmask ;
while ( !(gmask & 0x01) ) { gmask >>= 1; green >>= 1; }
bmask = _CVISUAL->blue_mask;
blue = colors[i].pixel & bmask ;
while ( !(bmask & 0x01) ) { bmask >>= 1; blue >>= 1; }
dr = (float)red/mask - r ;
dg = (float)green/mask - g ;
db = (float)blue/mask - b ;
newdist = dr*dr + dg*dg + db*db ;
if( newdist < curdist ) {
curind = color_indexs[i] ;
curdist = newdist ;
}
}
#endif
}
}
#ifdef PRO9517
if( drmin > 0 || dgmin > 0 || dbmin > 0 ) {
#else
if( curdist > 0.0 ) {
#endif
if( freeind < 0 ) {
unsigned long pixel;
if( Xw_alloc_color(pcolormap,r,g,b,&pixel,&isapproximate) ) {
for( i=0 ; i<pcolormap->maxcolor ; i++ ) {
if( pixel == pcolormap->pixels[i] ) break;
}
if( i < pcolormap->maxcolor ) {
curind = i;
}
}
} else {
if( Xw_def_color(pcolormap,freeind,r,g,b) ) {
curind = freeind ;
}
}
}
if( curind >= 0 ) {
status = XW_SUCCESS ;
#ifdef TEST
tab_ind[indice][0] = curind ;
tab_ind[indice][1] = r ;
tab_ind[indice][2] = g ;
tab_ind[indice][3] = b ;
/*
* Une fois que le tableau est plein, il faut le
* parcourir completement, donc on ne touche plus
* a indice_max.
*/
indice ++ ;
if( indice < MAX_COLRS ) {
indice_max = max(indice_max,indice);
} else {
indice = 0 ; /* on repart a 0 */
#ifdef TRACE_GET_COLOR_INDEX
if( Xw_get_trace() > 1 ) {
printf(" ************************\n") ;
printf(" Xw_get_color_index, full array\n") ;
printf(" ************************\n") ;
}
#endif
}
#endif
}
}
*index = curind ;
#ifdef TRACE_GET_COLOR_INDEX
if( Xw_get_trace() > 3 ) {
printf(" %d = Xw_get_color_index(%lx,%f,%f,%f,#%d/0x%lx)\n",
status,(long ) pcolormap,r,g,b,curind,(long ) pcolormap->pixels[curind]) ;
}
#endif
return( status ) ;
}
|
