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elk/lib/xwidgets/resource.c

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/* resource.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 "xt.h"
#include <ctype.h>
#define XtRChar "Char"
#define XtRGC "GC"
#define XtRBackingStore "BackingStore"
#define T_Unknown -1
#define T_String_Or_Symbol -2
#define T_Callbacklist -3
#define T_Float -4
#define T_Backing_Store -5
#define T_Dimension -6
#define T_Translations -7
#define T_Position -8
#define T_Bitmap -9
#define T_Cardinal -10
#define T_Accelerators -11
static int Resource_To_Scheme_Type (register char *t) {
if (streq (XtRAcceleratorTable, t))
return T_Accelerators;
else if (streq (XtRBackingStore, t))
return T_Backing_Store;
else if (streq (XtRBitmap, t))
return T_Bitmap;
else if (streq (XtRBoolean, t))
return T_Boolean;
else if (streq (XtRCallback, t))
return T_Callbacklist;
else if (streq (XtRCardinal, t))
return T_Cardinal;
else if (streq (XtRColormap, t))
return T_Colormap;
else if (streq (XtRCursor, t))
return T_Cursor;
else if (streq (XtRDimension, t))
return T_Dimension;
else if (streq (XtRDisplay, t))
return T_Display;
else if (streq (XtRFloat, t))
return T_Float;
else if (streq (XtRFont, t))
return T_Font;
else if (streq (XtRFontStruct, t))
return T_Font;
else if (streq (XtRGC, t))
return T_Gc;
else if (streq (XtRInt, t))
return T_Fixnum;
else if (streq (XtRPixel, t))
return T_Pixel;
else if (streq (XtRPixmap, t))
return T_Pixmap;
else if (streq (XtRPosition, t))
return T_Position;
else if (streq (XtRShort, t))
return T_Fixnum;
else if (streq (XtRString, t))
return T_String_Or_Symbol;
else if (streq (XtRTranslationTable, t))
return T_Translations;
else if (streq (XtRUnsignedChar, t))
return T_Character;
else if (streq (XtRChar, t))
return T_Character;
else if (streq (XtRWidget, t))
return T_Widget;
else if (streq (XtRWindow, t))
return T_Window;
return T_Unknown;
}
void Get_All_Resources (int sub, Widget w, WidgetClass c, XtResource **rp,
int *np, int *cp) {
XtResource *r, *sr, *cr;
int nr, snr = 0, cnr = 0;
XtGetResourceList (c, &r, (Cardinal *)&nr);
if (sub)
Get_Sub_Resource_List (c, &sr, (Cardinal *)&snr);
if (w && XtParent (w))
XtGetConstraintResourceList (XtClass (XtParent (w)), &cr,
(Cardinal *)&cnr);
*np = nr + snr + cnr;
*cp = cnr;
*rp = (XtResource *)XtMalloc (*np * sizeof (XtResource));
memcpy ((char *)*rp, (char *)r, nr * sizeof (XtResource));
XtFree ((char *)r);
if (snr)
memcpy ((char *)(*rp + nr), (char *)sr, snr * sizeof (XtResource));
if (cnr) {
memcpy ((char *)(*rp + nr+snr), (char *)cr, cnr * sizeof (XtResource));
XtFree ((char *)cr);
}
}
void Convert_Args (int ac, Object *av, ArgList to, Widget widget,
WidgetClass class) {
register char *name, *res;
register int i, j, k;
Object arg, val;
XtResource *r;
int nr, nc;
int st, dt;
char key[128];
PFS2X converter;
char *stmp;
XrmValue src, dst;
Alloca_Begin;
if (ac & 1)
Primitive_Error ("missing argument value");
Get_All_Resources (1, widget, class, &r, &nr, &nc);
/* Note:
* `r' is not freed in case of error.
*/
for (i = k = 0; k < ac; i++, k++) {
arg = av[k];
Get_Strsym_Stack (arg, name);
Make_Resource_Name (name);
for (j = 0; j < nr && !streq (name, r[j].resource_name); j++)
;
if (j == nr)
Primitive_Error ("no such resource: ~s", arg);
if (streq (r[j].resource_class, XtCReadOnly))
Primitive_Error ("resource is read-only: ~s", arg);
res = r[j].resource_name;
val = av[++k];
st = TYPE(val);
dt = Resource_To_Scheme_Type (r[j].resource_type);
/* First look for widget class specific converter for
* this resource, then look for a general converter
* (first try the name of the resource, then the type):
*/
if (widget && j >= nr-nc)
class = XtClass (XtParent (widget));
sprintf (key, "%s-%s", Class_Name (class), name);
converter = Find_Converter_To_C (key);
if (converter || (converter = Find_Converter_To_C (res))
|| (converter = Find_Converter_To_C (r[j].resource_type))) {
XtArgVal ret = converter (val);
XtSetArg (to[i], res, ret);
} else if (dt == T_String_Or_Symbol) {
Get_Strsym_Stack (val, stmp);
XtSetArg (to[i], res, XtNewString (stmp)); /* Never freed! */
} else if (dt == T_Callbacklist) {
int n;
XtCallbackList callbacks;
Check_Callback_List (val);
n = Fast_Length (val);
callbacks = (XtCallbackRec *) /* Never freed! */
XtMalloc ((n+1) * sizeof (XtCallbackRec));
callbacks[n].callback = 0;
callbacks[n].closure = 0;
Fill_Callbacks (val, callbacks, n,
Find_Callback_Converter (class, name, arg));
XtSetArg (to[i], res, callbacks);
} else if (dt == T_Float) {
float f = (float)Get_Double (val);
to[i].name = res;
memcpy ((char *)&to[i].value, (char *)&f, sizeof f);
} else if (dt == T_Dimension || dt == T_Position || dt == T_Cardinal
|| dt == T_Fixnum) {
XtSetArg (to[i], res, Get_Integer (val));
} else if (dt == T_Backing_Store) {
XtSetArg (to[i], res, Symbols_To_Bits (val, 0,
Backing_Store_Syms));
} else if (dt == T_Translations) {
XtSetArg (to[i], res, Get_Translations (val));
} else if (dt == T_Accelerators) {
XtSetArg (to[i], res, Get_Accelerators (val));
} else if ((dt == T_Bitmap || dt == T_Pixmap) && EQ(val, Sym_None)) {
XtSetArg (to[i], res, None);
} else if (dt == T_Bitmap) {
/* Should check depth here (must be 1), but how? */
XtSetArg (to[i], res, Get_Pixmap (val));
} else {
if (st != dt) {
char msg[128];
/* Try to let XtConvert() do the conversion.
*/
if (widget && (st == T_String || st == T_Symbol)) {
Get_Strsym_Stack (val, stmp);
src.size = strlen (stmp);
src.addr = (caddr_t)stmp;
XtConvert (widget, (String)XtRString, &src,
r[j].resource_type, &dst);
if (dst.addr) {
if (dst.size == (sizeof (unsigned char))) {
XtSetArg (to[i], res, *(unsigned char *)dst.addr);
} else if (dst.size == sizeof (int)) {
XtSetArg (to[i], res, *(int *)dst.addr);
} else if (dst.size == sizeof (XtArgVal)) {
XtSetArg (to[i], res, *(XtArgVal *)dst.addr);
} else {
sprintf (msg,
"%s: converter for %s returned weird size %d",
name, r[j].resource_type, dst.size);
Primitive_Error (msg);
}
goto done;
}
}
sprintf (msg, "%s: can't convert %s ~s to %s", name,
Types[st].name, r[j].resource_type);
Primitive_Error (msg, val);
}
if (dt == T_Boolean) {
XtSetArg (to[i], res, EQ(val, True));
} else if (dt == T_Colormap) {
XtSetArg (to[i], res, COLORMAP(val)->cm);
} else if (dt == T_Cursor) {
XtSetArg (to[i], res, CURSOR(val)->cursor);
} else if (dt == T_Display) {
XtSetArg (to[i], res, DISPLAY(val)->dpy);
} else if (dt == T_Font) {
Open_Font_Maybe (val);
if (streq (r[j].resource_type, XtRFontStruct))
XtSetArg (to[i], res, FONT(val)->info);
else
XtSetArg (to[i], res, FONT(val)->id);
} else if (dt == T_Pixel) {
XtSetArg (to[i], res, PIXEL(val)->pix);
} else if (dt == T_Pixmap) {
XtSetArg (to[i], res, PIXMAP(val)->pm);
} else if (dt == T_Gc) {
XtSetArg (to[i], res, GCONTEXT(val)->gc);
} else if (dt == T_Character) {
XtSetArg (to[i], res, CHAR(val));
} else if (dt == T_Widget) {
XtSetArg (to[i], res, WIDGET(val)->widget);
} else if (dt == T_Window) {
XtSetArg (to[i], res, WINDOW(val)->win);
} else Panic ("bad conversion type");
}
done: ;
}
Alloca_End;
XtFree ((char *)r);
}
Object Get_Values (Widget w, int ac, Object *av) {
register char *name;
register int i, j;
Object arg;
XtResource *r;
int nr, nc;
int t;
ArgList argl;
Object ret, tail;
Display *dpy;
char key[128];
PFX2S converter;
Widget w2;
GC_Node2;
Alloca_Begin;
Alloca (argl, Arg*, ac * sizeof (Arg));
Get_All_Resources (0, w, XtClass (w), &r, &nr, &nc);
/* Note:
* `r' is not freed in case of error.
*/
for (i = 0; i < ac; i++) {
XtArgVal argval;
arg = av[i];
Check_Type (arg, T_Symbol);
Get_Strsym_Stack (arg, name);
Make_Resource_Name (name);
for (j = 0; j < nr && !streq (name, r[j].resource_name); j++)
;
if (j == nr)
Primitive_Error ("no such resource: ~s", arg);
argl[i].name = name;
Alloca (argval, XtArgVal, r[j].resource_size);
argl[i].value = argval;
}
XtGetValues (w, argl, (Cardinal)ac);
ret = tail = P_Make_List (Make_Integer (ac), Null);
GC_Link2 (ret, tail);
/*
* Display is needed for resources like cursor and pixmap.
* XtDisplayOfObject(w) is not necessarily the right one!
*/
dpy = XtDisplayOfObject (w);
for (i = 0; i < ac; i++, tail = Cdr (tail)) {
Object o;
XtArgVal val = argl[i].value;
for (j = 0; j < nr && !streq (argl[i].name, r[j].resource_name); j++)
;
t = Resource_To_Scheme_Type (r[j].resource_type);
/* Look for a widget class specific converter, then for a
* general converter (first try the resource name, then the type):
*/
w2 = (j >= nr-nc) ? XtParent (w) : w;
sprintf (key, "%s-%s", Class_Name (XtClass (w2)), argl[i].name);
converter = Find_Converter_To_Scheme (key);
if (converter) {
o = converter (*(XtArgVal *)val);
} else if ((converter = Find_Converter_To_Scheme (argl[i].name))) {
o = converter (*(XtArgVal *)val);
} else if ((converter = Find_Converter_To_Scheme (r[j].resource_type))) {
o = converter (*(XtArgVal *)val);
} else if (t == T_String_Or_Symbol) {
char *s = *(char **)val;
if (s == 0) s = "";
o = Make_String (s, strlen (s));
} else if (t == T_Callbacklist) {
register int i, n;
Object ret, tail;
XtCallbackList callbacks = *(XtCallbackList *)val;
GC_Node;
for (n = 0; callbacks[n].callback; n++)
;
ret = tail = P_Make_List (Make_Integer (n), Null);
GC_Link2 (ret, tail);
for (i = 0; i < n; i++, tail = Cdr (tail))
Car (tail) = Get_Callbackfun (callbacks[i].closure);
GC_Unlink;
o = ret;
} else if (t == T_Float) {
o = Make_Reduced_Flonum ((double)*(float *)val);
} else if (t == T_Backing_Store) {
o = Bits_To_Symbols ((unsigned long)*(int *)val, 0,
Backing_Store_Syms);
if (Nullp (o))
Primitive_Error ("invalid backing-store (Xt bug)");
} else if (t == T_Boolean) {
o = (Boolean)*(Boolean *)val ? True : False;
} else if (t == T_Colormap) {
o = Make_Colormap (0, dpy, *(Colormap *)val);
} else if (t == T_Cursor) {
o = Make_Cursor_Foreign (dpy, *(Cursor *)val);
} else if (t == T_Gc) {
o = Make_Gc (0, dpy, *(GC *)val);
} else if (t == T_Dimension) {
o = Make_Integer (*(Dimension *)val);
} else if (t == T_Position) {
o = Make_Integer (*(Position *)val);
} else if (t == T_Cardinal) {
o = Make_Unsigned (*(Cardinal *)val);
} else if (t == T_Fixnum) {
if (streq (r[j].resource_type, XtRInt))
o = Make_Integer (*(int *)val);
else
o = Make_Integer (*(short *)val);
} else if (t == T_Display) {
o = Make_Display (0, dpy);
} else if (t == T_Font) {
if (streq (r[j].resource_type, XtRFontStruct)) {
o = Make_Font_Foreign (dpy, False, (Font)0,
*(XFontStruct **)val);
} else {
XFontStruct *info;
Disable_Interrupts;
info = XQueryFont (dpy, *(Font *)val);
Enable_Interrupts;
o = Make_Font_Foreign (dpy, False, *(Font *)val, info);
}
} else if (t == T_Pixel) {
o = Make_Pixel (*(unsigned long *)val);
} else if (t == T_Pixmap || t == T_Bitmap) {
o = Make_Pixmap_Foreign (dpy, *(Pixmap *)val);
} else if (t == T_Character) {
o = Make_Char (*(unsigned char *)val);
} else if (t == T_Widget) {
o = Make_Widget_Foreign (*(Widget *)val);
} else if (t == T_Window) {
o = Make_Window (0, dpy, *(Window *)val);
} else {
char s[128];
sprintf (s, "%s: no converter for %s", argl[i].name,
r[j].resource_type);
Primitive_Error (s);
}
Car (tail) = o;
}
XtFree ((char *)r);
GC_Unlink;
return ret;
}
/* Convert `mapped-when-managed' to `mappedWhenManaged'.
*/
void Make_Resource_Name (register char *s) {
register char *p;
for (p = s; *s; ) {
if (*s == '-') {
if (*++s) {
if (islower (*s))
*s = toupper (*s);
*p++ = *s++;
}
} else *p++ = *s++;
}
*p = '\0';
}
Object Get_Resources (WidgetClass c, void (*fun)(), int freeit) {
XtResource *r;
register XtResource *p;
int nr;
Object ret, tail, tail2, x;
GC_Node3;
fun (c, &r, &nr);
/* Note:
* `r' is not freed in case of error.
*/
ret = tail = tail2 = P_Make_List (Make_Integer (nr), Null);
GC_Link3 (ret, tail, tail2);
for (p = r; p < r+nr; p++, tail = Cdr (tail)) {
x = tail2 = P_Make_List (Make_Integer (3), Null);
Car (tail) = tail2 = x;
x = Intern (p->resource_name);
Car (tail2) = x; tail2 = Cdr (tail2);
x = Intern (p->resource_class);
Car (tail2) = x; tail2 = Cdr (tail2);
x = Intern (p->resource_type);
Car (tail2) = x;
}
GC_Unlink;
if (freeit) XtFree ((char *)r);
return ret;
}
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