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#include <Xw_Extension.h>
/* ifdef then trace on */
#ifdef TRACE
#define TRACE_ALLOC_PIXEL
#define TRACE_SET_PIXEL
#define TRACE_FREE_PIXEL
#endif
/*
XW_STATUS Xw_alloc_pixel(pcolormap,*pixel):
XW_EXT_COLORMAP *pcolormap
unsigned long *pixel;
Allocates a pixel in the colormap and
returns SUCCESS for a valid pixel value according of the free space of
the colormap,
or ERROR if no more room exist in the colormap.
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_alloc_pixel (void* acolormap, unsigned long *pixel)
#else
XW_STATUS Xw_alloc_pixel (acolormap,pixel)
void *acolormap;
unsigned long *pixel;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_COLORMAP *pcolormap = (XW_EXT_COLORMAP*) acolormap;
XW_STATUS status = XW_ERROR;
*pixel = 0;
if( !Xw_isdefine_colormap(pcolormap) ) {
/*ERROR*Bad EXT_COLORMAP Address*/
Xw_set_error(42,"Xw_alloc_pixel",pcolormap) ;
return (XW_ERROR) ;
}
if( _CCLASS == PseudoColor ) {
if( XAllocColorCells(_CDISPLAY,
_CINFO.colormap,False,NULL,0,pixel,1) ) {
status = XW_SUCCESS;
}
}
#ifdef TRACE_ALLOC_PIXEL
if( Xw_get_trace() ) {
printf(" %d = Xw_alloc_pixel(%lx,%ld)\n",status,(long ) pcolormap,*pixel) ;
}
#endif
return (status);
}
/*
XW_STATUS Xw_set_pixel(pcolormap,pixel,r,g,b):
XW_EXT_COLORMAP *pcolormap
unsigned long pixel;
float r,g,b;
Updates a pixel with the color {r,g,b} defined in [0-1] space
returns SUCCESS for a valid PseudoColor pixel
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_set_pixel (void* acolormap, unsigned long pixel, float r, float g, float b)
#else
XW_STATUS Xw_set_pixel (acolormap,pixel,r,g,b)
void *acolormap;
unsigned long pixel;
float r,g,b;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_COLORMAP *pcolormap = (XW_EXT_COLORMAP*) acolormap;
XW_STATUS status = XW_ERROR;
if( !Xw_isdefine_colormap(pcolormap) ) {
/*ERROR*Bad EXT_COLORMAP Address*/
Xw_set_error(42,"Xw_set_pixel",pcolormap) ;
return (XW_ERROR) ;
}
if( _CCLASS == PseudoColor ) {
XColor color;
int error,gravity;
color.pixel = pixel;
color.red = (unsigned short) (r*65535.);
color.green = (unsigned short) (g*65535.);
color.blue = (unsigned short) (b*65535.);
color.flags = DoRed | DoGreen | DoBlue;
Xw_print_error();
if( !Xw_get_trace() ) Xw_set_synchronize(_CDISPLAY,True);
XStoreColor(_CDISPLAY,_CINFO.colormap,&color);
if( !Xw_get_trace() ) Xw_set_synchronize(_CDISPLAY,False);
Xw_get_error(&error,&gravity);
if( error < 1000 ) status = XW_SUCCESS;
}
#ifdef TRACE_SET_PIXEL
if( Xw_get_trace() ) {
printf(" %d = Xw_set_pixel(%lx,%ld,%f,%f,%f)\n",status,(long ) pcolormap,pixel,r,g,b) ;
}
#endif
return (status);
}
/*
XW_STATUS Xw_free_pixel(pcolormap,pixel):
XW_EXT_COLORMAP *pcolormap
unsigned long pixel;
Free a pixel from the colormap
returns SUCCESS for a valid PseudoColor pixel
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_free_pixel (void* acolormap, unsigned long pixel)
#else
XW_STATUS Xw_free_pixel (acolormap,pixel)
void *acolormap;
unsigned long pixel;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_COLORMAP *pcolormap = (XW_EXT_COLORMAP*) acolormap;
XW_STATUS status = XW_ERROR;
if( !Xw_isdefine_colormap(pcolormap) ) {
/*ERROR*Bad EXT_COLORMAP Address*/
Xw_set_error(42,"Xw_free_pixel",pcolormap) ;
return (XW_ERROR) ;
}
if( _CCLASS == PseudoColor ) {
int error,gravity;
Xw_print_error();
if( !Xw_get_trace() ) Xw_set_synchronize(_CDISPLAY,True);
XFreeColors(_CDISPLAY,_CINFO.colormap,&pixel,1,0);
if( !Xw_get_trace() ) Xw_set_synchronize(_CDISPLAY,False);
Xw_get_error(&error,&gravity);
if( error < 1000 ) status = XW_SUCCESS;
}
#ifdef TRACE_FREE_PIXEL
if( Xw_get_trace() ) {
printf(" %d = Xw_free_pixel(%lx,%ld)\n",status,(long ) pcolormap,pixel) ;
}
#endif
return (status);
}
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