119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/* colormap.c
|
|
*
|
|
* $Id$
|
|
*
|
|
* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
|
|
* Copyright 2002, 2003 Sam Hocevar <sam@hocevar.net>, Paris
|
|
*
|
|
* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
|
|
* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
|
|
* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
|
|
* between TELES and Nixdorf Microprocessor Engineering, Berlin).
|
|
*
|
|
* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
|
|
* owners or individual owners of copyright in this software, grant to any
|
|
* person or company a worldwide, royalty free, license to
|
|
*
|
|
* i) copy this software,
|
|
* ii) prepare derivative works based on this software,
|
|
* iii) distribute copies of this software or derivative works,
|
|
* iv) perform this software, or
|
|
* v) display this software,
|
|
*
|
|
* provided that this notice is not removed and that neither Oliver Laumann
|
|
* nor Teles nor Nixdorf are deemed to have made any representations as to
|
|
* the suitability of this software for any purpose nor are held responsible
|
|
* for any defects of this software.
|
|
*
|
|
* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "xlib.h"
|
|
|
|
Generic_Predicate (Colormap)
|
|
|
|
Generic_Equal_Dpy (Colormap, COLORMAP, cm)
|
|
|
|
Generic_Print (Colormap, "#[colormap %lu]", COLORMAP(x)->cm)
|
|
|
|
Generic_Get_Display (Colormap, COLORMAP)
|
|
|
|
Object Make_Colormap (int finalize, Display *dpy, Colormap cmap) {
|
|
Object cm;
|
|
|
|
if (cmap == None)
|
|
return Sym_None;
|
|
cm = Find_Object (T_Colormap, (GENERIC)dpy, Match_X_Obj, cmap);
|
|
if (Nullp (cm)) {
|
|
cm = Alloc_Object (sizeof (struct S_Colormap), T_Colormap, 0);
|
|
COLORMAP(cm)->tag = Null;
|
|
COLORMAP(cm)->cm = cmap;
|
|
COLORMAP(cm)->dpy = dpy;
|
|
COLORMAP(cm)->free = 0;
|
|
Register_Object (cm, (GENERIC)dpy, finalize ? P_Free_Colormap :
|
|
(PFO)0, 0);
|
|
}
|
|
return cm;
|
|
}
|
|
|
|
Colormap Get_Colormap (Object c) {
|
|
Check_Type (c, T_Colormap);
|
|
return COLORMAP(c)->cm;
|
|
}
|
|
|
|
Object P_Free_Colormap (Object c) {
|
|
Check_Type (c, T_Colormap);
|
|
if (!COLORMAP(c)->free)
|
|
XFreeColormap (COLORMAP(c)->dpy, COLORMAP(c)->cm);
|
|
Deregister_Object (c);
|
|
COLORMAP(c)->free = 1;
|
|
return Void;
|
|
}
|
|
|
|
static Object P_Alloc_Color (Object cmap, Object color) {
|
|
XColor c;
|
|
Colormap cm = Get_Colormap (cmap);
|
|
int r;
|
|
|
|
c = *Get_Color (color);
|
|
Disable_Interrupts;
|
|
r = XAllocColor (COLORMAP(cmap)->dpy, cm, &c);
|
|
Enable_Interrupts;
|
|
if (!r)
|
|
return False;
|
|
return Make_Pixel (c.pixel);
|
|
}
|
|
|
|
static Object P_Alloc_Named_Color (Object cmap, Object name) {
|
|
Colormap cm = Get_Colormap (cmap);
|
|
XColor screen, exact;
|
|
int r;
|
|
Object ret, t, x;
|
|
GC_Node2;
|
|
|
|
Disable_Interrupts;
|
|
r = XAllocNamedColor (COLORMAP(cmap)->dpy, cm, Get_Strsym (name),
|
|
&screen, &exact);
|
|
Enable_Interrupts;
|
|
if (!r)
|
|
return False;
|
|
t = ret = P_Make_List (Make_Integer (3), Null);
|
|
GC_Link2 (t, ret);
|
|
x = Make_Pixel (screen.pixel);
|
|
Car (t) = x; t = Cdr (t);
|
|
x = Make_Color (screen.red, screen.green, screen.blue);
|
|
Car (t) = x; t = Cdr (t);
|
|
x = Make_Color (exact.red, exact.green, exact.blue);
|
|
Car (t) = x;
|
|
GC_Unlink;
|
|
return ret;
|
|
}
|
|
|
|
void elk_init_xlib_colormap () {
|
|
Generic_Define (Colormap, "colormap", "colormap?");
|
|
Define_Primitive (P_Colormap_Display, "colormap-display", 1, 1, EVAL);
|
|
Define_Primitive (P_Free_Colormap, "free-colormap", 1, 1, EVAL);
|
|
Define_Primitive (P_Alloc_Color, "alloc-color", 2, 2, EVAL);
|
|
Define_Primitive (P_Alloc_Named_Color,"alloc-named-color",2, 2, EVAL);
|
|
}
|