89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
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#include "xlib.h"
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Generic_Predicate (Colormap)
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Generic_Equal_Dpy (Colormap, COLORMAP, cm)
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Generic_Print (Colormap, "#[colormap %lu]", COLORMAP(x)->cm)
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Generic_Get_Display (Colormap, COLORMAP)
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Object Make_Colormap (finalize, dpy, cmap) Display *dpy; Colormap cmap; {
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Object cm;
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if (cmap == None)
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return Sym_None;
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cm = Find_Object (T_Colormap, (GENERIC)dpy, Match_X_Obj, cmap);
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if (Nullp (cm)) {
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cm = Alloc_Object (sizeof (struct S_Colormap), T_Colormap, 0);
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COLORMAP(cm)->tag = Null;
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COLORMAP(cm)->cm = cmap;
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COLORMAP(cm)->dpy = dpy;
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COLORMAP(cm)->free = 0;
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Register_Object (cm, (GENERIC)dpy, finalize ? P_Free_Colormap :
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(PFO)0, 0);
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}
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return cm;
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}
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Colormap Get_Colormap (c) Object c; {
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Check_Type (c, T_Colormap);
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return COLORMAP(c)->cm;
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}
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Object P_Free_Colormap (c) Object c; {
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Check_Type (c, T_Colormap);
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if (!COLORMAP(c)->free)
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XFreeColormap (COLORMAP(c)->dpy, COLORMAP(c)->cm);
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Deregister_Object (c);
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COLORMAP(c)->free = 1;
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return Void;
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}
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static Object P_Alloc_Color (cmap, color) Object cmap, color; {
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XColor c;
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Colormap cm = Get_Colormap (cmap);
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int r;
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c = *Get_Color (color);
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Disable_Interrupts;
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r = XAllocColor (COLORMAP(cmap)->dpy, cm, &c);
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Enable_Interrupts;
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if (!r)
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return False;
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return Make_Pixel (c.pixel);
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}
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static Object P_Alloc_Named_Color (cmap, name) Object cmap, name; {
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Colormap cm = Get_Colormap (cmap);
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XColor screen, exact;
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int r;
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Object ret, t, x;
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GC_Node2;
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Disable_Interrupts;
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r = XAllocNamedColor (COLORMAP(cmap)->dpy, cm, Get_Strsym (name),
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&screen, &exact);
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Enable_Interrupts;
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if (!r)
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return False;
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t = ret = P_Make_List (Make_Integer (3), Null);
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GC_Link2 (t, ret);
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x = Make_Pixel (screen.pixel);
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Car (t) = x; t = Cdr (t);
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x = Make_Color (screen.red, screen.green, screen.blue);
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Car (t) = x; t = Cdr (t);
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x = Make_Color (exact.red, exact.green, exact.blue);
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Car (t) = x;
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GC_Unlink;
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return ret;
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}
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elk_init_xlib_colormap () {
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Generic_Define (Colormap, "colormap", "colormap?");
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Define_Primitive (P_Colormap_Display, "colormap-display", 1, 1, EVAL);
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Define_Primitive (P_Free_Colormap, "free-colormap", 1, 1, EVAL);
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Define_Primitive (P_Alloc_Color, "alloc-color", 2, 2, EVAL);
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Define_Primitive (P_Alloc_Named_Color,"alloc-named-color",2, 2, EVAL);
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}
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