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#include "xlib.h"
static Object Sym_Gc;
Generic_Predicate (Gc)
Generic_Equal_Dpy (Gc, GCONTEXT, gc)
Generic_Print (Gc, "#[gcontext %lu]", GCONTEXT(x)->gc)
Generic_Get_Display (Gc, GCONTEXT)
Object Make_Gc (finalize, dpy, g) Display *dpy; GC g; {
Object gc;
if (g == None)
return Sym_None;
gc = Find_Object (T_Gc, (GENERIC)dpy, Match_X_Obj, g);
if (Nullp (gc)) {
gc = Alloc_Object (sizeof (struct S_Gc), T_Gc, 0);
GCONTEXT(gc)->tag = Null;
GCONTEXT(gc)->gc = g;
GCONTEXT(gc)->dpy = dpy;
GCONTEXT(gc)->free = 0;
Register_Object (gc, (GENERIC)dpy, finalize ? P_Free_Gc :
(PFO)0, 0);
}
return gc;
}
static Object P_Create_Gc (w, g) Object w, g; {
unsigned long mask;
Display *dpy;
Drawable dr;
dr = Get_Drawable (w, &dpy);
mask = Vector_To_Record (g, GC_Size, Sym_Gc, GC_Rec);
return Make_Gc (1, dpy, XCreateGC (dpy, dr, mask, &GCV));
}
static Object P_Copy_Gc (gc, w) Object gc, w; {
GC dst;
Display *dpy;
Drawable dr;
Check_Type (gc, T_Gc);
dr = Get_Drawable (w, &dpy);
dst = XCreateGC (dpy, dr, 0L, &GCV);
XCopyGC (dpy, GCONTEXT(gc)->gc, ~0L, dst);
return Make_Gc (1, dpy, dst);
}
static Object P_Change_Gc (gc, g) Object gc, g; {
unsigned long mask;
Check_Type (gc, T_Gc);
mask = Vector_To_Record (g, GC_Size, Sym_Gc, GC_Rec);
XChangeGC (GCONTEXT(gc)->dpy, GCONTEXT(gc)->gc, mask, &GCV);
return Void;
}
Object P_Free_Gc (g) Object g; {
Check_Type (g, T_Gc);
if (!GCONTEXT(g)->free)
XFreeGC (GCONTEXT(g)->dpy, GCONTEXT(g)->gc);
Deregister_Object (g);
GCONTEXT(g)->free = 1;
return Void;
}
static Object P_Query_Best_Size (d, w, h, shape) Object d, w, h, shape; {
unsigned int rw, rh;
Check_Type (d, T_Display);
if (!XQueryBestSize (DISPLAY(d)->dpy, Symbols_To_Bits (shape, 0,
Shape_Syms), DefaultRootWindow (DISPLAY(d)->dpy),
Get_Integer (w), Get_Integer (h), &rw, &rh))
Primitive_Error ("cannot query best shape");
return Cons (Make_Integer (rw), Make_Integer (rh));
}
static Object P_Set_Gcontext_Clip_Rectangles (gc, x, y, v, ord)
Object gc, x, y, v, ord; {
register XRectangle *p;
register i, n;
Alloca_Begin;
Check_Type (gc, T_Gc);
Check_Type (v, T_Vector);
n = VECTOR(v)->size;
Alloca (p, XRectangle*, n * sizeof (XRectangle));
for (i = 0; i < n; i++) {
Object rect;
rect = VECTOR(v)->data[i];
Check_Type (rect, T_Pair);
if (Fast_Length (rect) != 4)
Primitive_Error ("invalid rectangle: ~s", rect);
p[i].x = Get_Integer (Car (rect)); rect = Cdr (rect);
p[i].y = Get_Integer (Car (rect)); rect = Cdr (rect);
p[i].width = Get_Integer (Car (rect)); rect = Cdr (rect);
p[i].height = Get_Integer (Car (rect));
}
XSetClipRectangles (GCONTEXT(gc)->dpy, GCONTEXT(gc)->gc, Get_Integer (x),
Get_Integer (y), p, n, Symbols_To_Bits (ord, 0, Ordering_Syms));
Alloca_End;
return Void;
}
static Object P_Set_Gcontext_Dashlist (gc, off, v) Object gc, off, v; {
register char *p;
register i, n, d;
Alloca_Begin;
Check_Type (gc, T_Gc);
Check_Type (v, T_Vector);
n = VECTOR(v)->size;
Alloca (p, char*, n);
for (i = 0; i < n; i++) {
d = Get_Integer (VECTOR(v)->data[i]);
if (d < 0 || d > 255)
Range_Error (VECTOR(v)->data[i]);
p[i] = d;
}
XSetDashes (GCONTEXT(gc)->dpy, GCONTEXT(gc)->gc, Get_Integer (off), p, n);
Alloca_End;
return Void;
}
#define ValidGCValuesBits \
(GCFunction | GCPlaneMask | GCForeground | GCBackground | GCLineWidth |\
GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle | GCFillRule |\
GCTile | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin | GCFont |\
GCSubwindowMode | GCGraphicsExposures | GCClipXOrigin | GCClipYOrigin |\
GCDashOffset | GCArcMode)
static Object P_Get_Gc_Values (gc) Object gc; {
unsigned long mask = ValidGCValuesBits;
Check_Type (gc, T_Gc);
if (!XGetGCValues (GCONTEXT(gc)->dpy, GCONTEXT(gc)->gc, mask, &GCV))
Primitive_Error ("cannot get gcontext values");
return Record_To_Vector (GC_Rec, GC_Size, Sym_Gc, GCONTEXT(gc)->dpy,
mask);
}
elk_init_xlib_gcontext () {
Define_Symbol (&Sym_Gc, "gcontext");
Generic_Define (Gc, "gcontext", "gcontext?");
Define_Primitive (P_Gc_Display, "gcontext-display", 1, 1, EVAL);
Define_Primitive (P_Create_Gc, "xlib-create-gcontext",2, 2, EVAL);
Define_Primitive (P_Copy_Gc, "copy-gcontext", 2, 2, EVAL);
Define_Primitive (P_Change_Gc, "xlib-change-gcontext",2, 2, EVAL);
Define_Primitive (P_Free_Gc, "free-gcontext", 1, 1, EVAL);
Define_Primitive (P_Query_Best_Size, "query-best-size", 4, 4, EVAL);
Define_Primitive (P_Set_Gcontext_Clip_Rectangles,
"set-gcontext-clip-rectangles!", 5, 5, EVAL);
Define_Primitive (P_Set_Gcontext_Dashlist,
"set-gcontext-dashlist!", 3, 3, EVAL);
Define_Primitive (P_Get_Gc_Values,
"xlib-get-gcontext-values", 1, 1, EVAL);
}
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