90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
#include "xlib.h"
|
|
#include "scheme48.h"
|
|
|
|
s48_value Create_Color(s48_value r, s48_value g, s48_value b) {
|
|
s48_value col = S48_MAKE_VALUE(XColor);
|
|
XColor* c = S48_EXTRACT_VALUE_POINTER(col, XColor);
|
|
c->red = s48_extract_integer(r);
|
|
c->green = s48_extract_integer(g);
|
|
c->blue = s48_extract_integer(b);
|
|
|
|
return col;
|
|
}
|
|
|
|
s48_value Int_Extract_RGB_Values(XColor col) {
|
|
s48_value res = S48_NULL;
|
|
S48_DECLARE_GC_PROTECT(1);
|
|
S48_GC_PROTECT_1(res);
|
|
|
|
res = s48_cons( s48_enter_integer(col.blue), res );
|
|
res = s48_cons( s48_enter_integer(col.green), res );
|
|
res = s48_cons( s48_enter_integer(col.red), res );
|
|
|
|
S48_GC_UNPROTECT();
|
|
return res;
|
|
}
|
|
|
|
s48_value Extract_RGB_Values(s48_value Xcolor) {
|
|
return Int_Extract_RGB_Values(*EXTRACT_COLOR(Xcolor));
|
|
}
|
|
|
|
s48_value Query_Color (s48_value Xcolormap, s48_value Xpixel,
|
|
s48_value Xdisplay) {
|
|
XColor c;
|
|
|
|
c.pixel = EXTRACT_PIXEL(Xpixel);
|
|
XQueryColor(EXTRACT_DISPLAY(Xdisplay), EXTRACT_COLORMAP(Xcolormap), &c);
|
|
|
|
return Int_Extract_RGB_Values(c);
|
|
}
|
|
|
|
|
|
s48_value Query_Colors(s48_value Xcolormap, s48_value Xpixels,
|
|
s48_value Xdisplay) {
|
|
s48_value result;
|
|
S48_DECLARE_GC_PROTECT(1);
|
|
|
|
long n = S48_VECTOR_LENGTH(Xpixels);
|
|
XColor p[n];
|
|
int i;
|
|
|
|
for (i=0; i < n; i++)
|
|
p[i].pixel = EXTRACT_PIXEL(S48_VECTOR_REF(Xpixels, i));
|
|
|
|
XQueryColors( EXTRACT_DISPLAY(Xdisplay), EXTRACT_COLORMAP(Xcolormap), p, n );
|
|
|
|
S48_GC_PROTECT_1(result);
|
|
result = s48_make_vector(n, S48_FALSE);
|
|
for (i=0; i < n; i++)
|
|
S48_VECTOR_SET(result, i, Int_Extract_RGB_Values(p[i]));
|
|
|
|
S48_GC_UNPROTECT();
|
|
return result;
|
|
}
|
|
|
|
s48_value Lookup_Color(s48_value Xcolormap, s48_value Xdisplay,
|
|
s48_value color_name) {
|
|
XColor visual, exact;
|
|
|
|
s48_value res = S48_FALSE;
|
|
S48_DECLARE_GC_PROTECT(1);
|
|
|
|
if (XLookupColor( EXTRACT_DISPLAY(Xdisplay), EXTRACT_COLORMAP(Xcolormap),
|
|
s48_extract_string(color_name), &visual, &exact )) {
|
|
S48_GC_PROTECT_1(res);
|
|
res = s48_cons( Int_Extract_RGB_Values( visual ),
|
|
Int_Extract_RGB_Values( exact ) );
|
|
}
|
|
|
|
S48_GC_UNPROTECT();
|
|
return res;
|
|
}
|
|
|
|
void s48_init_color(void) {
|
|
S48_EXPORT_FUNCTION(Create_Color);
|
|
S48_EXPORT_FUNCTION(Extract_RGB_Values);
|
|
S48_EXPORT_FUNCTION(Query_Color);
|
|
S48_EXPORT_FUNCTION(Query_Colors);
|
|
S48_EXPORT_FUNCTION(Lookup_Color);
|
|
}
|