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elk/lib/xlib/property.c

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/* property.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"
#include <string.h>
Object Sym_Now;
Generic_Predicate (Atom)
Generic_Simple_Equal (Atom, ATOM, atom)
Generic_Print (Atom, "#[atom %lu]", ATOM(x)->atom)
Object Make_Atom (Atom a) {
Object atom;
if (a == None)
return Sym_None;
atom = Find_Object (T_Atom, (GENERIC)0, Match_X_Obj, a);
if (Nullp (atom)) {
atom = Alloc_Object (sizeof (struct S_Atom), T_Atom, 0);
ATOM(atom)->tag = Null;
ATOM(atom)->atom = a;
Register_Object (atom, (GENERIC)0, (PFO)0, 0);
}
return atom;
}
/* Should be used with care */
static Object P_Make_Atom (Object n) {
return Make_Atom ((Atom)Get_Long (n));
}
static Object P_Intern_Atom (Object d, Object name) {
Check_Type (d, T_Display);
return Make_Atom (XInternAtom (DISPLAY(d)->dpy, Get_Strsym (name), 0));
}
static Object P_Find_Atom (Object d, Object name) {
Check_Type (d, T_Display);
return Make_Atom (XInternAtom (DISPLAY(d)->dpy, Get_Strsym (name), 1));
}
static Object P_Atom_Name (Object d, Object a) {
register char *s;
Check_Type (d, T_Display);
Check_Type (a, T_Atom);
Disable_Interrupts;
s = XGetAtomName (DISPLAY(d)->dpy, ATOM(a)->atom);
Enable_Interrupts;
return Make_String (s, strlen (s));
}
static Object P_List_Properties (Object w) {
register int i;
int n;
register Atom *ap;
Object v;
GC_Node;
Check_Type (w, T_Window);
Disable_Interrupts;
ap = XListProperties (WINDOW(w)->dpy, WINDOW(w)->win, &n);
Enable_Interrupts;
v = Make_Vector (n, Null);
GC_Link (v);
for (i = 0; i < n; i++) {
Object x;
x = Make_Atom (ap[i]);
VECTOR(v)->data[i] = x;
}
GC_Unlink;
XFree ((char *)ap);
return v;
}
static Object P_Get_Property (Object w, Object prop, Object type, Object start,
Object len, Object deletep) {
Atom req_type = AnyPropertyType, actual_type;
int format;
unsigned long nitems, bytes_left;
unsigned char *data;
Object ret, t, x;
register unsigned int i;
GC_Node2;
Check_Type (w, T_Window);
Check_Type (prop, T_Atom);
if (!EQ(type, False)) {
Check_Type (type, T_Atom);
req_type = ATOM(type)->atom;
}
Check_Type (deletep, T_Boolean);
Disable_Interrupts;
if (XGetWindowProperty (WINDOW(w)->dpy, WINDOW(w)->win, ATOM(prop)->atom,
Get_Long (start), Get_Long (len),
EQ(deletep, True), req_type, &actual_type, &format,
&nitems, &bytes_left, &data) != Success)
Primitive_Error ("cannot get property");
Enable_Interrupts;
ret = t = P_Make_List (Make_Integer (4), Null);
GC_Link2 (ret, t);
x = Make_Atom (actual_type);
Car (t) = x; t = Cdr (t);
x = Make_Integer (format);
Car (t) = x; t = Cdr (t);
if (nitems) {
if (format == 8) {
Object s;
x = Make_String ((char *)0, (int)nitems);
s = Car (t) = x;
memcpy (STRING(s)->data, (char *)data, (int)nitems);
} else {
Object v;
GC_Node;
v = Make_Vector ((int)nitems, Null);
GC_Link (v);
for (i = 0; i < nitems; i++) {
x = Make_Unsigned (format == 16 ?
*((int16_t *)data + i) : *((int32_t *)data + i));
VECTOR(v)->data[i] = x;
}
Car (t) = v;
GC_Unlink;
}
}
t = Cdr (t);
x = Make_Unsigned_Long (bytes_left);
Car (t) = x;
GC_Unlink;
return ret;
}
static Object P_Change_Property (Object w, Object prop, Object type,
Object format, Object mode, Object data) {
register int i, m, x, nitems, f;
char *buf;
Alloca_Begin;
Check_Type (w, T_Window);
Check_Type (prop, T_Atom);
Check_Type (type, T_Atom);
m = Symbols_To_Bits (mode, 0, Propmode_Syms);
switch (f = Get_Integer (format)) {
case 8:
Check_Type (data, T_String);
buf = STRING(data)->data;
nitems = STRING(data)->size;
break;
case 16: case 32:
Check_Type (data, T_Vector);
nitems = VECTOR(data)->size;
Alloca (buf, char*, nitems * (f / sizeof (char)));
for (i = 0; i < nitems; i++) {
x = Get_Integer (VECTOR(data)->data[i]);
if (f == 16) {
if (x > 65535)
Primitive_Error ("format mismatch");
*((int16_t *)buf + i) = x;
} else *((int32_t *)buf + i) = x;
}
break;
default:
Primitive_Error ("invalid format: ~s", format);
}
XChangeProperty (WINDOW(w)->dpy, WINDOW(w)->win, ATOM(prop)->atom,
ATOM(type)->atom, f, m, (unsigned char *)buf, nitems);
Alloca_End;
return Void;
}
static Object P_Delete_Property (Object w, Object prop) {
Check_Type (w, T_Window);
Check_Type (prop, T_Atom);
XDeleteProperty (WINDOW(w)->dpy, WINDOW(w)->win, ATOM(prop)->atom);
return Void;
}
static Object P_Rotate_Properties (Object w, Object v, Object delta) {
Atom *p;
register int i, n;
Alloca_Begin;
Check_Type (w, T_Window);
Check_Type (v, T_Vector);
n = VECTOR(v)->size;
Alloca (p, Atom*, n * sizeof (Atom));
for (i = 0; i < n; i++) {
Object a;
a = VECTOR(v)->data[i];
Check_Type (a, T_Atom);
p[i] = ATOM(a)->atom;
}
XRotateWindowProperties (WINDOW(w)->dpy, WINDOW(w)->win, p, n,
Get_Integer (delta));
Alloca_End;
return Void;
}
static Object P_Set_Selection_Owner (Object d, Object s, Object owner,
Object time) {
Check_Type (d, T_Display);
Check_Type (s, T_Atom);
XSetSelectionOwner (DISPLAY(d)->dpy, ATOM(s)->atom, Get_Window (owner),
Get_Time (time));
return Void;
}
static Object P_Selection_Owner (Object d, Object s) {
Check_Type (d, T_Display);
Check_Type (s, T_Atom);
return Make_Window (0, DISPLAY(d)->dpy,
XGetSelectionOwner (DISPLAY(d)->dpy, ATOM(s)->atom));
}
static Object P_Convert_Selection (Object s, Object target, Object prop,
Object w, Object time) {
Atom p = None;
Check_Type (s, T_Atom);
Check_Type (target, T_Atom);
if (!EQ(prop, Sym_None)) {
Check_Type (prop, T_Atom);
p = ATOM(prop)->atom;
}
Check_Type (w, T_Window);
XConvertSelection (WINDOW(w)->dpy, ATOM(s)->atom, ATOM(target)->atom,
p, WINDOW(w)->win, Get_Time (time));
return Void;
}
void elk_init_xlib_property () {
Define_Symbol (&Sym_Now, "now");
Generic_Define (Atom, "atom", "atom?");
Define_Primitive (P_Make_Atom, "make-atom", 1, 1, EVAL);
Define_Primitive (P_Intern_Atom, "intern-atom", 2, 2, EVAL);
Define_Primitive (P_Find_Atom, "find-atom", 2, 2, EVAL);
Define_Primitive (P_Atom_Name, "atom-name", 2, 2, EVAL);
Define_Primitive (P_List_Properties, "list-properties", 1, 1, EVAL);
Define_Primitive (P_Get_Property, "get-property", 6, 6, EVAL);
Define_Primitive (P_Change_Property, "change-property", 6, 6, EVAL);
Define_Primitive (P_Delete_Property, "delete-property", 2, 2, EVAL);
Define_Primitive (P_Rotate_Properties, "rotate-properties", 3, 3, EVAL);
Define_Primitive (P_Set_Selection_Owner, "set-selection-owner!",
4, 4, EVAL);
Define_Primitive (P_Selection_Owner, "selection-owner", 2, 2, EVAL);
Define_Primitive (P_Convert_Selection, "convert-selection", 5, 5, EVAL);
}
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