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- /* Device functions for X windows.
- Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
- Copyright (C) 1994, 1995 Amdahl Corporation.
-
- This file is part of XEmacs.
-
- XEmacs is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- XEmacs is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
-
- You should have received a copy of the GNU General Public License
- along with XEmacs; see the file COPYING. If not, write to the Free
- Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Synched up with: Not in FSF. */
-
- /* Original authors: Jamie Zawinski and the FSF */
- /* Rewritten by Ben Wing and Chuck Thompson. */
-
- #include <config.h>
- #include "lisp.h"
-
- #include "device-x.h"
- #include "frame-x.h"
- #include "xintrinsicp.h" /* CoreP.h needs this */
- #include <X11/CoreP.h> /* Numerous places access the fields of
- a core widget directly. We could
- use XtVaGetValues(), but ... */
- #include "xgccache.h"
- #include <X11/Shell.h>
- #include "xmu.h"
- #include "glyphs-x.h"
- #include "objects-x.h"
-
- #include "buffer.h"
- #include "events.h"
- #include "faces.h"
- #include "redisplay.h"
- #include "sysdep.h"
- #include "window.h"
-
- #include "sysfile.h"
- #include "systime.h"
-
- Lisp_Object Vdefault_x_device;
-
- DEFINE_DEVICE_TYPE (x);
-
- /* Qdisplay in general.c */
- Lisp_Object Qargv_list;
- Lisp_Object Qx_error;
-
- /* The application class of Emacs. */
- Lisp_Object Vx_emacs_application_class;
-
- static XrmOptionDescRec emacs_options[] = {
- {"-geometry", ".geometry", XrmoptionSepArg, NULL},
- {"-iconic", ".iconic", XrmoptionNoArg, (XtPointer) "yes"},
-
- {"-internal-border-width", "*EmacsFrame.internalBorderWidth",
- XrmoptionSepArg, NULL},
- {"-ib", "*EmacsFrame.internalBorderWidth", XrmoptionSepArg, NULL},
- {"-scrollbar-width", "*EmacsFrame.scrollBarWidth", XrmoptionSepArg, NULL},
- {"-scrollbar-height", "*EmacsFrame.scrollBarHeight", XrmoptionSepArg, NULL},
-
- /* #### Beware! If the type of the shell changes, update this. */
- {"-T", "*EmacsShell.title", XrmoptionSepArg, (XtPointer) NULL},
- {"-wn", "*EmacsShell.title", XrmoptionSepArg, (XtPointer) NULL},
- {"-title", "*EmacsShell.title", XrmoptionSepArg, (XtPointer) NULL},
- {"-iconname", "*EmacsShell.iconName", XrmoptionSepArg, (XtPointer) NULL},
- {"-in", "*EmacsShell.iconName", XrmoptionSepArg, (XtPointer) NULL},
- {"-mc", "*pointerColor", XrmoptionSepArg, (XtPointer) NULL},
- {"-cr", "*cursorColor", XrmoptionSepArg, (XtPointer) NULL}
- };
-
- #ifdef I18N4
- extern void init_input (CONST char *res_name, CONST char *res_class,
- Display *display);
- #endif
-
- static void validify_resource_string (char *str);
-
- /* Functions to synchronize mirroring resources and specifiers */
- int in_resource_setting;
- int in_specifier_change_function;
-
-
- /************************************************************************/
- /* helper functions */
- /************************************************************************/
-
- struct device *
- get_device_from_display (Display *dpy)
- {
- Lisp_Object dev;
-
- DEVICE_LOOP (dev)
- {
- struct device *d = XDEVICE (XCAR (dev));
- if (DEVICE_IS_X (d) && DEVICE_X_DISPLAY (d) == dpy)
- return d;
- }
-
- /* Only devices we are actually managing should ever be used as an
- argument to this function. */
- abort ();
-
- return 0; /* suppress compiler warning */
- }
-
- struct device *
- get_x_device (Lisp_Object device)
- {
- if (NILP (device))
- device = Fselected_device ();
- /* quietly accept frames for the device arg */
- if (FRAMEP (device))
- device = XFRAME (device)->device;
- CHECK_X_DEVICE (device, 0);
- return XDEVICE (device);
- }
-
- Display *
- get_x_display (Lisp_Object device)
- {
- return DEVICE_X_DISPLAY (get_x_device (device));
- }
-
-
- /************************************************************************/
- /* initializing an X connection */
- /************************************************************************/
-
- static void
- allocate_x_device_struct (struct device *d)
- {
- d->device_data = (struct x_device *) xmalloc (sizeof (struct x_device));
-
- /* zero out all slots. */
- memset (d->device_data, 0, sizeof (struct x_device));
- }
-
- static void
- Xatoms_of_device_x (struct device *d)
- {
- Display *display = DEVICE_X_DISPLAY (d);
- #define ATOM(x) XInternAtom (display, (x), False)
-
- DEVICE_XATOM_WM_PROTOCOLS (d) = ATOM ("WM_PROTOCOLS");
- DEVICE_XATOM_WM_DELETE_WINDOW (d) = ATOM ("WM_DELETE_WINDOW");
- DEVICE_XATOM_WM_SAVE_YOURSELF (d) = ATOM ("WM_SAVE_YOURSELF");
- DEVICE_XATOM_WM_TAKE_FOCUS (d) = ATOM ("WM_TAKE_FOCUS");
- DEVICE_XATOM_WM_STATE (d) = ATOM ("WM_STATE");
- }
-
- static void
- sanity_check_geometry_resource (Display *dpy)
- {
- char *app_name, *app_class, *s;
- char buf1 [255], buf2 [255];
- char *type;
- XrmValue value;
- XtGetApplicationNameAndClass (dpy, &app_name, &app_class);
- strcpy (buf1, app_name);
- strcpy (buf2, app_class);
- for (s = buf1; *s; s++) if (*s == '.') *s = '_';
- strcat (buf1, "._no_._such_._resource_.geometry");
- strcat (buf2, "._no_._such_._resource_.Geometry");
- if (XrmGetResource (XtDatabase (dpy), buf1, buf2, &type, &value) == True)
- {
- warn_when_safe (Qgeometry, Qerror,
- "\n\
- Apparently \"%s*geometry: %s\" or \"%s*geometry: %s\" was\n\
- specified in the resource database. Specifying \"*geometry\" will make\n\
- XEmacs (and most other X programs) malfunction in obscure ways. (i.e.\n\
- the Xt or Xm libraries will probably crash, which is a very bad thing.)\n\
- You should always use \".geometry\" or \"*EmacsFrame.geometry\" instead.\n",
- app_name, (char *) value.addr,
- app_class, (char *) value.addr);
- suppress_early_backtrace = 1;
- error ("Invalid geometry resource");
- }
- }
-
- static void
- x_init_device_class (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
- if (DisplayCells (dpy, DefaultScreen (dpy)) > 2)
- {
- switch (DefaultVisualOfScreen (DefaultScreenOfDisplay (dpy))->class)
- {
- case StaticGray:
- case GrayScale:
- DEVICE_CLASS (d) = Qgrayscale;
- default:
- DEVICE_CLASS (d) = Qcolor;
- }
- }
- else
- DEVICE_CLASS (d) = Qmono;
- }
-
- /* #### We either need to fix this to correctly handle multiple
- connections to the same display (really fucking hard) or have it
- return the already existing connection if one exists. */
-
- static void
- x_init_device (struct device *d, Lisp_Object params)
- {
- Lisp_Object display;
- Lisp_Object argv_list;
- Lisp_Object device;
- Display *dpy;
- int argc;
- char *disp_name;
- char **argv;
- char *app_class;
-
- XSETDEVICE (device, d);
- display = Fcdr_safe (Fassq (Qdisplay, params));
- argv_list = Fcdr_safe (Fassq (Qargv_list, params));
-
- if (!NILP (display))
- CHECK_STRING (display, 0);
-
- allocate_x_device_struct (d);
-
- if (NILP (Vdefault_x_device))
- Vdefault_x_device = device;
-
- make_argc_argv (argv_list, &argc, &argv);
-
- /* no encapsulation of X functions: use string_ext_data() */
-
- if (STRINGP (Vx_emacs_application_class) &&
- string_length (XSTRING (Vx_emacs_application_class)) > 0)
- app_class = string_ext_data (XSTRING (Vx_emacs_application_class));
- else
- app_class = "Emacs";
-
- if (NILP (display))
- {
- /* If the user didn't explicitly specifify a display to use when
- they called make-x-device, then we first check to see if a
- display was specified on the command line with -display. If
- so, we set disp_name to it. Otherwise we use XDisplayName to
- see what DISPLAY is set to. XtOpenDisplay knows how to do
- both of these things, but we want to know the name to use in
- the error message if XtOpenDisplay fails. */
- if (display_arg)
- {
- int elt;
-
- disp_name = NULL;
- for (elt = 0; elt < argc; elt++)
- {
- if (!strcmp (argv[elt], "-d") || !strcmp (argv[elt], "-display"))
- {
- if (elt + 1 == argc)
- {
- suppress_early_backtrace = 1;
- error ("-display specified with no arg");
- }
- else
- {
- disp_name = argv[elt + 1];
- break;
- }
- }
- }
-
- /* assert: display_arg is only set if we found the display
- arg earlier so we can't fail to find it now. */
- assert (disp_name != NULL);
- }
- else
- disp_name = XDisplayName (0);
- }
- else
- disp_name = string_ext_data2 (XSTRING (display));
-
- slow_down_interrupts ();
- /* The Xt code can't deal with signals here. Yuck. */
- dpy = DEVICE_X_DISPLAY (d) = XtOpenDisplay (Xt_app_con, disp_name, NULL,
- app_class, emacs_options,
- XtNumber (emacs_options),
- &argc, argv);
- speed_up_interrupts ();
-
- if (dpy == 0)
- {
- suppress_early_backtrace = 1;
- error ("X server \"%s\" not responding\n", disp_name);
- }
-
- if (NILP (DEVICE_NAME (d)))
- DEVICE_NAME (d) = build_string (disp_name);
- else
- /* We're going to modify the string in-place, so be a nice XEmacs */
- DEVICE_NAME (d) = Fcopy_sequence (DEVICE_NAME (d));
- /* colons and periods can't appear in individual elements of resource
- strings */
- validify_resource_string ((char *) string_data (XSTRING (DEVICE_NAME (d))));
- DEVICE_XT_APP_SHELL (d) = XtAppCreateShell (NULL, app_class,
- applicationShellWidgetClass,
- dpy, NULL, 0);
-
- DEVICE_X_DATA (d)->display_name = xstrdup (disp_name);
-
- #ifdef I18N4
- init_input (*argv, app_class, dpy);
- #endif
-
- DEVICE_X_DATA (d)->argv_list = make_arg_list (argc, argv);
- free_argc_argv (argv);
-
- DEVICE_X_WM_COMMAND_FRAME (d) = Qnil;
-
- sanity_check_geometry_resource (dpy);
-
- /* In event-Xt.c */
- x_init_modifier_mapping (d);
-
- DEVICE_INFD (d) = DEVICE_OUTFD (d) = ConnectionNumber (dpy);
- init_baud_rate (d);
- init_one_device (d);
-
- DEVICE_X_GC_CACHE (d) =
- make_gc_cache (dpy, RootWindow (dpy, DefaultScreen (dpy)));
- DEVICE_X_GRAY_PIXMAP (d) = None;
- Xatoms_of_device_x (d);
- Xatoms_of_xselect (d);
- Xatoms_of_objects_x (d);
- x_init_device_class (d);
-
- /* This will cause the elisp side of the X device intialization to
- be loaded. At this point we consider the two parts to be one.
- They are split up because of requirements in lisp/prim/startup.el */
- Frequire (intern ("pre-x-win"), Qnil);
- Frequire (intern ("post-x-win"), Qnil);
- }
-
- static void
- x_mark_device (struct device *d, void (*markobj) (Lisp_Object))
- {
- ((markobj) (DEVICE_X_DATA (d)->argv_list));
- ((markobj) (DEVICE_X_DATA (d)->WM_COMMAND_frame));
- }
-
- static int
- x_initially_selected_for_input (struct device *d)
- {
- return 1;
- }
-
-
- /************************************************************************/
- /* closing an X connection */
- /************************************************************************/
-
- static void
- free_x_device_struct (struct device *d)
- {
- struct x_device *x_data = DEVICE_X_DATA (d);
-
- if (x_data->display_name)
- xfree (x_data->display_name);
- xfree (d->device_data);
- }
-
- static void
- x_delete_device (struct device *d)
- {
- Lisp_Object rest, device;
- Display *display;
- #ifdef FREE_CHECKING
- extern void (*__free_hook)();
- int checking_free;
- #endif
-
- XSETDEVICE (device, d);
- display = DEVICE_X_DISPLAY (d);
-
- if (display)
- {
- #ifdef FREE_CHECKING
- checking_free = (__free_hook != 0);
-
- /* Disable strict free checking, to avoid bug in X library */
- if (checking_free)
- disable_strict_free_check ();
- #endif
-
- free_gc_cache (DEVICE_X_GC_CACHE (d));
- if (DEVICE_X_DATA (d)->x_modifier_keymap)
- XFreeModifiermap (DEVICE_X_DATA (d)->x_modifier_keymap);
- if (DEVICE_X_DATA (d)->x_keysym_map)
- XFree ((char *) DEVICE_X_DATA (d)->x_keysym_map);
-
- XtCloseDisplay (display);
- DEVICE_X_DISPLAY (d) = 0;
- #ifdef FREE_CHECKING
- if (checking_free)
- enable_strict_free_check ();
- #endif
- }
-
- if (EQ (device, Vdefault_x_device))
- {
- /* #### handle deleting last X device */
- Vdefault_x_device = Qnil;
- DEVICE_LOOP (rest)
- {
- if (DEVICE_IS_X (XDEVICE (XCAR (rest))))
- {
- Vdefault_x_device = XCAR (rest);
- break;
- }
- }
- }
- free_x_device_struct (d);
- }
-
-
- /************************************************************************/
- /* handle X errors */
- /************************************************************************/
-
- static CONST char *events[] =
- {
- "0: ERROR!",
- "1: REPLY",
- "KeyPress",
- "KeyRelease",
- "ButtonPress",
- "ButtonRelease",
- "MotionNotify",
- "EnterNotify",
- "LeaveNotify",
- "FocusIn",
- "FocusOut",
- "KeymapNotify",
- "Expose",
- "GraphicsExpose",
- "NoExpose",
- "VisibilityNotify",
- "CreateNotify",
- "DestroyNotify",
- "UnmapNotify",
- "MapNotify",
- "MapRequest",
- "ReparentNotify",
- "ConfigureNotify",
- "ConfigureRequest",
- "GravityNotify",
- "ResizeRequest",
- "CirculateNotify",
- "CirculateRequest",
- "PropertyNotify",
- "SelectionClear",
- "SelectionRequest",
- "SelectionNotify",
- "ColormapNotify",
- "ClientMessage",
- "MappingNotify",
- "LASTEvent"
- };
-
- CONST char *
- x_event_name (int event_type)
- {
- if (event_type < 0) return 0;
- if (event_type >= (sizeof (events) / sizeof (char *))) return 0;
- return events [event_type];
- }
-
- /* Handling errors.
-
- If an X error occurs which we are not expecting, we have no alternative
- but to print it to stderr. It would be nice to stuff it into a pop-up
- buffer, or to print it in the minibuffer, but that's not possible, because
- one is not allowed to do any I/O on the display connection from an error
- handler. The guts of Xlib expect these functions to either return or exit.
-
- However, there are occasions when we might expect an error to reasonably
- occur. The interface to this is as follows:
-
- Before calling some X routine which may error, call
- expect_x_error (dpy);
-
- Just after calling the X routine, call either:
-
- x_error_occurred_p (dpy);
-
- to ask whether an error happened (and was ignored), or:
-
- signal_if_x_error (dpy, resumable_p);
-
- which will call Fsignal() with args appropriate to the X error, if there
- was one. (Resumable_p is whether the debugger should be allowed to
- continue from the call to signal.)
-
- You must call one of these two routines immediately after calling the X
- routine; think of them as bookends like BLOCK_INPUT and UNBLOCK_INPUT.
- */
-
- static int error_expected;
- static int error_occurred;
- static XErrorEvent last_error;
-
- extern Lisp_Object Qdelete_frame;
-
- /* OVERKILL! */
-
- #ifdef EXTERNAL_WIDGET
- static Lisp_Object
- x_error_handler_do_enqueue (Lisp_Object frame)
- {
- Fenqueue_eval_event (Qdelete_frame, frame);
- return Qt;
- }
-
- static Lisp_Object
- x_error_handler_error (Lisp_Object data, Lisp_Object dummy)
- {
- return Qnil;
- }
- #endif /* EXTERNAL_WIDGET */
-
- int
- x_error_handler (Display *disp, XErrorEvent *event)
- {
- if (error_expected)
- {
- error_expected = 0;
- error_occurred = 1;
- last_error = *event;
- }
- else
- {
- #ifdef EXTERNAL_WIDGET
- struct frame *f;
- struct device *d = get_device_from_display (disp);
-
- if ((event->error_code == BadWindow ||
- event->error_code == BadDrawable)
- && ((f = x_any_window_to_frame (d, event->resourceid)) != 0))
- {
- Lisp_Object frame;
-
- /* one of the windows comprising one of our frames has died.
- This occurs particularly with ExternalShell frames when the
- client that owns the ExternalShell's window dies.
-
- We cannot do any I/O on the display connection so we need
- to enqueue an eval event so that the deletion happens
- later.
-
- Furthermore, we need to trap any errors (out-of-memory) that
- may occur when Fenqueue_eval_event is called.
- */
-
- if (f->being_deleted)
- return 0;
- XSETFRAME (frame, f);
- if (!NILP (condition_case_1 (Qerror, x_error_handler_do_enqueue,
- frame, x_error_handler_error, Qnil)))
- {
- f->being_deleted = 1;
- f->visible = 0;
- }
- return 0;
- }
- #endif /* EXTERNAL_WIDGET */
-
- stderr_out ("\n%s: ",
- (STRINGP (Vinvocation_name)
- ? (char *) string_data (XSTRING (Vinvocation_name))
- : "xemacs"));
- XmuPrintDefaultErrorMessage (disp, event, stderr);
- }
- return 0;
- }
-
- void
- expect_x_error (Display *dpy)
- {
- assert (!error_expected);
- XSync (dpy, 0); /* handle pending errors before setting flag */
- error_expected = 1;
- error_occurred = 0;
- }
-
- int
- x_error_occurred_p (Display *dpy)
- {
- int val;
- XSync (dpy, 0); /* handle pending errors before setting flag */
- val = error_occurred;
- error_expected = 0;
- error_occurred = 0;
- return val;
- }
-
- int
- signal_if_x_error (Display *dpy, int resumable_p)
- {
- char buf[1024];
- Lisp_Object data;
- if (! x_error_occurred_p (dpy))
- return 0;
- data = Qnil;
- sprintf (buf, "0x%X", (unsigned int) last_error.resourceid);
- data = Fcons (build_string (buf), data);
- {
- char num [32];
- sprintf (num, "%d", last_error.request_code);
- XGetErrorDatabaseText (last_error.display, "XRequest", num, "",
- buf, sizeof (buf));
- if (! *buf)
- sprintf (buf, "Request-%d", last_error.request_code);
- data = Fcons (build_string (buf), data);
- }
- XGetErrorText (last_error.display, last_error.error_code, buf, sizeof (buf));
- data = Fcons (build_string (buf), data);
- again:
- Fsignal (Qx_error, data);
- if (! resumable_p) goto again;
- return 1;
- }
-
- int
- x_IO_error_handler (Display *disp)
- {
- /* This function can GC */
- Lisp_Object dev;
- struct device *d = get_device_from_display (disp);
-
- if (XINT (Flength (Vdevice_list)) == 1)
- {
- stderr_out
- ("\n%s: Fatal I/O Error %d (%s) on display connection \"%s\"\n",
- (STRINGP (Vinvocation_name) ?
- (char *) string_data (XSTRING (Vinvocation_name)) : "xemacs"),
- errno, strerror (errno), DisplayString (disp));
- stderr_out
- (" after %lu requests (%lu known processed) with %d events remaining.\n",
- NextRequest (disp) - 1, LastKnownRequestProcessed (disp),
- QLength (disp));
- /* assert (!_Xdebug); */
- }
- else
- {
- warn_when_safe
- (Qx, Qcritical,
- "I/O Error %d (%s) on display connection \"%s\"\n"
- " after %lu requests (%lu known processed) with "
- "%d events remaining.\n",
- errno, strerror (errno), DisplayString (disp),
- NextRequest (disp) - 1, LastKnownRequestProcessed (disp),
- QLength (disp));
- }
-
- XSETDEVICE (dev, d);
- Fenqueue_eval_event (Qdelete_device, Fcons (Qunbound, dev));
-
- return 0;
- }
-
- DEFUN ("x-debug-mode", Fx_debug_mode, Sx_debug_mode, 1, 2, 0,
- "With a true arg, make the connection to the X server synchronous.\n\
- With false, make it asynchronous. Synchronous connections are much slower,\n\
- but are useful for debugging. (If you get X errors, make the connection\n\
- synchronous, and use a debugger to set a breakpoint on `x_error_handler'.\n\
- Your backtrace of the C stack will now be useful. In asynchronous mode,\n\
- the stack above `x_error_handler' isn't helpful because of buffering.)\n\
- If DEVICE is not specified, the selected device is assumed.\n\
- \n\
- Calling this function is the same as calling the C function `XSynchronize',\n\
- or starting the program with the `-sync' command line argument.")
- (arg, device)
- Lisp_Object arg, device;
- {
- struct device *d = get_x_device (device);
-
- XSynchronize (DEVICE_X_DISPLAY (d), !NILP (arg));
-
- if (!NILP (arg))
- message ("X connection is synchronous");
- else
- message ("X connection is asynchronous");
-
- return arg;
- }
-
-
- /************************************************************************/
- /* X resources */
- /************************************************************************/
-
- #if 0 /* bah humbug. The whole "widget == resource" stuff is such
- a crock of shit that I'm just going to ignore it all. */
-
- /* If widget is NULL, we are retrieving device or global face data. */
-
- static void
- construct_name_list (Display *display, Widget widget, char *fake_name,
- char *fake_class, char *name, char *class)
- {
- char *stack [100][2];
- Widget this;
- int count = 0;
- char *name_tail, *class_tail;
-
- if (widget)
- {
- for (this = widget; this; this = XtParent (this))
- {
- stack [count][0] = this->core.name;
- stack [count][1] = XtClass (this)->core_class.class_name;
- count++;
- }
- count--;
- }
- else if (fake_name && fake_class)
- {
- stack [count][0] = fake_name;
- stack [count][1] = fake_class;
- count++;
- }
-
- /* The root widget is an application shell; resource lookups use the
- specified application name and application class in preference to
- the name/class of that widget (which is argv[0] / "ApplicationShell").
- Generally the app name and class will be argv[0] / "Emacs" but
- the former can be set via the -name command-line option, and the
- latter can be set by changing `x-emacs-application-class' in
- lisp/term/x-win.el.
- */
- XtGetApplicationNameAndClass (display,
- &stack [count][0],
- &stack [count][1]);
-
- name [0] = 0;
- class [0] = 0;
-
- name_tail = name;
- class_tail = class;
- for (; count >= 0; count--)
- {
- strcat (name_tail, stack [count][0]);
- for (; *name_tail; name_tail++)
- if (*name_tail == '.') *name_tail = '_';
- strcat (name_tail, ".");
- name_tail++;
-
- strcat (class_tail, stack [count][1]);
- for (; *class_tail; class_tail++)
- if (*class_tail == '.') *class_tail = '_';
- strcat (class_tail, ".");
- class_tail++;
- }
- }
-
- #endif
-
- /* Only the characters [-_A-Za-z0-9] are allowed in the individual
- sections of a resource. Convert invalid characters to -. */
-
- static void
- validify_resource_string (char *str)
- {
- while (*str)
- {
- if (!strchr ("ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- "abcdefghijklmnopqrstuvwxyz"
- "0123456789-_", *str))
- *str = '-';
- str++;
- }
- }
-
- /* Given a locale and device specification from x-get-resource or
- x-get-resource-prefix, return the resource prefix and display to
- fetch the resource on. */
-
- static void
- x_get_resource_prefix (Lisp_Object locale, Lisp_Object device,
- Display **display_out, char *name_out,
- char *class_out)
- {
- char *appname, *appclass;
-
- if (NILP (locale))
- locale = Qglobal;
- if (NILP (Fvalid_specifier_locale_p (locale)))
- signal_simple_error ("Invalid locale", locale);
- if (WINDOWP (locale))
- /* #### I can't come up with any coherent way of naming windows.
- By relative position? That seems tricky because windows
- can change position, be split, etc. By order of creation?
- That seems less than useful. */
- signal_simple_error ("Windows currently can't be resourced", locale);
-
- if (!NILP (device) && !DEVICEP (device))
- CHECK_DEVICE (device, 0);
- if (DEVICEP (device) && !DEVICE_IS_X (XDEVICE (device)))
- device = Qnil;
- if (NILP (device))
- {
- device = DFW_DEVICE (locale);
- if (DEVICEP (device) && !DEVICE_IS_X (XDEVICE (device)))
- device = Qnil;
- if (NILP (device))
- device = Vdefault_x_device;
- if (NILP (device))
- {
- *display_out = 0;
- return;
- }
- }
-
- *display_out = DEVICE_X_DISPLAY (XDEVICE (device));
-
- XtGetApplicationNameAndClass (*display_out, &appname, &appclass);
- strcpy (name_out, appname);
- strcpy (class_out, appclass);
- validify_resource_string (name_out);
- validify_resource_string (class_out);
-
- if (EQ (locale, Qglobal))
- return;
- if (BUFFERP (locale))
- {
- strcat (name_out, ".buffer.");
- /* we know buffer is live; otherwise we got an error above. */
- strcat (name_out,
- (CONST char *) string_data (XSTRING (Fbuffer_name (locale))));
- strcat (class_out, ".EmacsLocaleType.EmacsBuffer");
- }
- else if (FRAMEP (locale))
- {
- strcat (name_out, ".frame.");
- /* we know frame is live; otherwise we got an error above. */
- strcat (name_out,
- (CONST char *) string_data (XSTRING (Fframe_name (locale))));
- strcat (class_out, ".EmacsLocaleType.EmacsFrame");
- }
- else
- {
- assert (DEVICEP (locale));
- strcat (name_out, ".device.");
- /* we know device is live; otherwise we got an error above. */
- strcat (name_out,
- (CONST char *) string_data (XSTRING (Fdevice_name (locale))));
- strcat (class_out, ".EmacsLocaleType.EmacsDevice");
- }
- return;
- }
-
- DEFUN ("x-get-resource", Fx_get_resource, Sx_get_resource, 3, 6, 0,
- "Retrieve an X resource from the resource manager.\n\
- \n\
- The first arg is the name of the resource to retrieve, such as \"font\".\n\
- The second arg is the class of the resource to retrieve, like \"Font\".\n\
- The third arg should be one of the symbols 'string, 'integer, 'natnum, or\n\
- 'boolean, specifying the type of object that the database is searched for.\n\
- The fourth arg is the locale to search for the resources on, and can\n\
- currently be a a buffer, a frame, a device, or 'global. If omitted, it\n\
- defaults to 'global.\n\
- The fifth arg is the device to search for the resources on. (The resource\n\
- database for a particular device is constructed by combining non-device-\n\
- specific resources such any command-line resources specified and any\n\
- app-defaults files found [or the fallback resources supplied by XEmacs,\n\
- if no app-defaults file is found] with device-specific resources such as\n\
- those supplied using xrdb.) If omitted, it defaults to the device of\n\
- LOCALE, if a device can be derived (i.e. if LOCALE is a frame or device),\n\
- and otherwise defaults to the value of `default-x-device'.\n\
- The sixth arg NOERROR, if non-nil, means do not signal an error if a\n\
- bogus resource specification was retrieved (e.g. if a non-integer was\n\
- given when an integer was requested). In this case, a warning is issued\n\
- instead.\n\
- \n\
- The resource names passed to this function are looked up relative to the\n\
- locale.\n\
- \n\
- If you want to search for a subresource, you just need to specify the\n\
- resource levels in NAME and CLASS. For example, NAME could be\n\
- \"modeline.attributeFont\", and CLASS \"Face.AttributeFont\".\n\
- \n\
- Specifically,\n\
- \n\
- 1) If LOCALE is a buffer, a call\n\
- \n\
- (x-get-resource \"foreground\" \"Foreground\" 'string SOME-BUFFER)\n\
- \n\
- is an interface to a C call something like\n\
- \n\
- XrmGetResource (db, \"xemacs.buffer.BUFFER-NAME.foreground\",\n\
- \"Emacs.EmacsLocaleType.EmacsBuffer.Foreground\",\n\
- \"String\");\n\
- \n\
- 2) If LOCALE is a frame, a call\n\
- \n\
- (x-get-resource \"foreground\" \"Foreground\" 'string SOME-FRAME)\n\
- \n\
- is an interface to a C call something like\n\
- \n\
- XrmGetResource (db, \"xemacs.frame.FRAME-NAME.foreground\",\n\
- \"Emacs.EmacsLocaleType.EmacsFrame.Foreground\",\n\
- \"String\");\n\
- \n\
- 3) If LOCALE is a device, a call\n\
- \n\
- (x-get-resource \"foreground\" \"Foreground\" 'string SOME-DEVICE)\n\
- \n\
- is an interface to a C call something like\n\
- \n\
- XrmGetResource (db, \"xemacs.device.DEVICE-NAME.foreground\",\n\
- \"Emacs.EmacsLocaleType.EmacsDevice.Foreground\",\n\
- \"String\");\n\
- \n\
- 4) If LOCALE is 'global, a call\n\
- \n\
- (x-get-resource \"foreground\" \"Foreground\" 'string 'global)\n\
- \n\
- is an interface to a C call something like\n\
- \n\
- XrmGetResource (db, \"xemacs.foreground\",\n\
- \"Emacs.Foreground\",\n\
- \"String\");\n\
- \n\
- Note that for 'global, no prefix is added other than that of the\n\
- application itself; thus, you can use this locale to retrieve\n\
- arbitrary application resources, if you really want to.\n\
- \n\
- The returned value of this function is nil if the queried resource is not\n\
- found. If the third arg is `string', a string is returned, and if it is\n\
- `integer', an integer is returned. If the third arg is `boolean', then the\n\
- returned value is the list (t) for true, (nil) for false, and is nil to\n\
- mean ``unspecified.''")
- (name, class, type, locale, device, no_error)
- Lisp_Object name, class, type, locale, device, no_error;
- {
- /* #### fixed limit, could be overflowed */
- char name_string[1024], class_string[1024];
- char *raw_result;
- XrmDatabase db;
- Display *display;
-
- CHECK_STRING (name, 0);
- CHECK_STRING (class, 0);
- CHECK_SYMBOL (type, 0);
-
- if (!EQ (type, Qstring) && !EQ (type, Qboolean) &&
- !EQ (type, Qinteger) && !EQ (type, Qnatnum))
- return
- Fsignal (Qwrong_type_argument,
- list2 (build_translated_string
- ("should be string, integer, natnum or boolean"),
- type));
-
- x_get_resource_prefix (locale, device, &display, name_string,
- class_string);
- if (!display)
- return Qnil;
-
- db = XtDatabase (display);
-
- strcat (name_string, ".");
- strcat (name_string, (CONST char *) string_data (XSTRING (name)));
- strcat (class_string, ".");
- strcat (class_string, (CONST char *) string_data (XSTRING (class)));
-
- {
- XrmValue xrm_value;
- XrmName namelist[100];
- XrmClass classlist[100];
- XrmName *namerest = namelist;
- XrmClass *classrest = classlist;
- XrmRepresentation xrm_type;
- XrmRepresentation string_quark;
- int result;
- XrmStringToNameList (name_string, namelist);
- XrmStringToClassList (class_string, classlist);
- string_quark = XrmStringToQuark ("String");
-
- /* ensure that they have the same length */
- while (namerest[0] && classrest[0])
- namerest++, classrest++;
- if (namerest[0] || classrest[0])
- signal_simple_error_2
- ("class list and name list must be the same length", name, class);
- result = XrmQGetResource (db, namelist, classlist, &xrm_type, &xrm_value);
-
- if (result != True || xrm_type != string_quark)
- return Qnil;
- raw_result = (char *) xrm_value.addr;
- }
-
- if (EQ (type, Qstring))
- return build_string (raw_result);
- else if (EQ (type, Qboolean))
- {
- if (!strcasecmp (raw_result, "off") ||
- !strcasecmp (raw_result, "false") ||
- !strcasecmp (raw_result,"no"))
- return Fcons (Qnil, Qnil);
- else if (!strcasecmp (raw_result, "on") ||
- !strcasecmp (raw_result, "true") ||
- !strcasecmp (raw_result, "yes"))
- return Fcons (Qt, Qnil);
- else
- {
- char str[1255];
- sprintf (str, "can't convert %s: %s to a Boolean",
- name_string, raw_result);
- if (!NILP (no_error))
- {
- warn_when_safe (Qresource, Qwarning, str);
- return Qnil;
- }
- else
- {
- return Fsignal (Qerror, list1 (build_string (str)));
- }
- }
- }
- else if (EQ (type, Qinteger) || EQ (type, Qnatnum))
- {
- int i;
- char c;
- if (1 != sscanf (raw_result, "%d%c", &i, &c))
- {
- char str[1255];
- sprintf (str, "can't convert %s: %s to an integer",
- name_string, raw_result);
- if (!NILP (no_error))
- {
- warn_when_safe (Qresource, Qwarning, str);
- return Qnil;
- }
- else
- {
- return Fsignal (Qerror, list1 (build_string (str)));
- }
- }
- else if (EQ (type, Qnatnum) && i < 0)
- {
- char str[1255];
- sprintf (str, "invalid numerical value %d for resource %s",
- i, name_string);
- if (!NILP (no_error))
- {
- warn_when_safe (Qresource, Qwarning, str);
- return Qnil;
- }
- else
- {
- return Fsignal (Qerror, list1 (build_string (str)));
- }
- }
- else
- return make_number (i);
- }
- else
- abort ();
-
- /* Can't get here. */
- return Qnil; /* shut up compiler */
- }
-
- DEFUN ("x-get-resource-prefix", Fx_get_resource_prefix,
- Sx_get_resource_prefix, 1, 2, 0,
- "Return the resource prefix for LOCALE on DEVICE.\n\
- The resource prefix is the strings used to prefix resources if\n\
- the LOCALE and DEVICE arguments were passed to `x-get-resource'.\n\
- The returned value is a cons of a name prefix and a class prefix.\n\
- For example, if LOCALE is a frame, the returned value might be\n\
- (\"xemacs.frame.FRAME-NAME\" . \"Emacs.EmacsLocaleType.EmacsFrame\").\n\
- If no valid X device for resourcing can be obtained, this function\n\
- returns nil. (In such a case, `x-get-resource' would always return nil.)")
- (locale, device)
- Lisp_Object locale, device;
- {
- /* #### fixed limit, could be overflowed */
- char name[1024], class[1024];
- Display *display;
-
- x_get_resource_prefix (locale, device, &display, name, class);
- if (!display)
- return Qnil;
- return Fcons (build_string (name), build_string (class));
- }
-
- DEFUN ("x-put-resource", Fx_put_resource, Sx_put_resource, 1, 2, 0,
- "Add a resource to the resource database for DEVICE.\n\
- RESOURCE-LINE specifies the resource to add and should be a\n\
- standard resource specification.")
- (resource_line, device)
- Lisp_Object resource_line, device;
- {
- struct device *d = get_device (device);
- char *str, *colon_pos;
-
- CHECK_STRING (resource_line, 0);
- str = (char *) string_data (XSTRING (resource_line));
- if (!(colon_pos = strchr (str, ':')) || strchr (str, '\n'))
- invalid:
- signal_simple_error ("Invalid resource line", resource_line);
- if (strspn (str,
- /* Only the following chars are allowed before the colon */
- " \t.*?abcdefghijklmnopqrstuvwxyz"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-") != colon_pos - str)
- goto invalid;
-
- if (DEVICE_IS_X (d))
- {
- XrmDatabase db = XtDatabase (DEVICE_X_DISPLAY (d));
- XrmPutLineResource (&db, str);
- }
-
- return Qnil;
- }
-
-
- /************************************************************************/
- /* display information functions */
- /************************************************************************/
-
- DEFUN ("default-x-device", Fdefault_x_device, Sdefault_x_device, 0, 0, 0,
- "Return the default X device for resourcing.\n\
- This is the first-created X device that still exists.")
- ()
- {
- return Vdefault_x_device;
- }
-
- DEFUN ("device-x-display", Fdevice_x_display, Sdevice_x_display, 0, 1, 0,
- "Return the X display which DEVICE is connected to, as a string.")
- (device)
- Lisp_Object device;
- {
- struct device *d = get_x_device (device);
-
- return (make_string ((Bufbyte *) DEVICE_X_DATA (d)->display_name,
- strlen (DEVICE_X_DATA (d)->display_name)));
- }
-
- DEFUN ("device-x-argv-list", Fdevice_x_argv_list, Sdevice_x_argv_list, 0, 1, 0,
- "You should probably not be using this function.")
- (device)
- Lisp_Object device;
- {
- struct device *d = get_x_device (device);
-
- return Fcopy_sequence (DEVICE_X_DATA (d)->argv_list);
- }
-
- DEFUN ("x-display-visual-class", Fx_display_visual_class,
- Sx_display_visual_class, 0, 1, 0,
- "Return the visual class of the X display `device' is on.\n\
- The returned value will be one of the symbols `static-gray', `gray-scale',\n\
- `static-color', `pseudo-color', `true-color', or `direct-color'.")
- (device)
- Lisp_Object device;
- {
- switch (DefaultVisualOfScreen
- (DefaultScreenOfDisplay (get_x_display (device)))->class)
- {
- case StaticGray: return (intern ("static-gray"));
- case GrayScale: return (intern ("gray-scale"));
- case StaticColor: return (intern ("static-color"));
- case PseudoColor: return (intern ("pseudo-color"));
- case TrueColor: return (intern ("true-color"));
- case DirectColor: return (intern ("direct-color"));
- default:
- error ("display has an unknown visual class");
- }
-
- return Qnil; /* suppress compiler warning */
- }
-
- static int
- x_device_pixel_width (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
-
- return DisplayWidth (dpy, DefaultScreen (dpy));
- }
-
- static int
- x_device_pixel_height (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
-
- return DisplayHeight (dpy, DefaultScreen (dpy));
- }
-
- static int
- x_device_mm_width (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
-
- return DisplayWidthMM (dpy, DefaultScreen (dpy));
- }
-
- static int
- x_device_mm_height (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
-
- return DisplayHeightMM (dpy, DefaultScreen (dpy));
- }
-
- static int
- x_device_bitplanes (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
-
- return DisplayPlanes (dpy, DefaultScreen (dpy));
- }
-
- static int
- x_device_color_cells (struct device *d)
- {
- Display *dpy = DEVICE_X_DISPLAY (d);
-
- return DisplayCells (dpy, DefaultScreen (dpy));
- }
-
- DEFUN ("x-server-vendor", Fx_server_vendor, Sx_server_vendor, 0, 1, 0,
- "Return the vendor ID string of the X server `device' on.")
- (device)
- Lisp_Object device;
- {
- Display *dpy = get_x_display (device);
- char *vendor = ServerVendor (dpy);
-
- if (vendor)
- return (build_string (vendor));
- else
- return (build_string (""));
- }
-
- DEFUN ("x-server-version", Fx_server_version, Sx_server_version, 0, 1, 0,
- "Return the version numbers of the X server `device' is on.\n\
- The returned value is a list of three integers: the major and minor\n\
- version numbers of the X Protocol in use, and the vendor-specific release\n\
- number. See also `x-server-vendor'.")
- (device)
- Lisp_Object device;
- {
- Display *dpy = get_x_display (device);
-
- return list3 (make_number (ProtocolVersion (dpy)),
- make_number (ProtocolRevision (dpy)),
- make_number (VendorRelease (dpy)));
- }
-
- DEFUN ("x-valid-keysym-name-p", Fx_valid_keysym_name_p, Sx_valid_keysym_name_p,
- 1, 1, 0,
- "Return true if KEYSYM names a keysym that the X library knows about.\n\
- Valid keysyms are listed in the files /usr/include/X11/keysymdef.h and in\n\
- /usr/lib/X11/XKeysymDB, or whatever the equivalents are on your system.")
- (keysym)
- Lisp_Object keysym;
- {
- CHECK_STRING (keysym, 0);
- if (XStringToKeysym (string_ext_data (XSTRING (keysym))))
- return Qt;
- return Qnil;
- }
-
-
- /************************************************************************/
- /* grabs and ungrabs */
- /************************************************************************/
-
- DEFUN ("x-grab-pointer", Fx_grab_pointer, Sx_grab_pointer, 0, 3, 0,
- "Grab the pointer and restrict it to its current window.\n\
- If optional DEVICE argument is nil, the default device will be used.\n\
- If optional CURSOR argument is non-nil, change the pointer shape to that\n\
- until `x-ungrab-pointer' is called (it should be an object returned by the\n\
- `make-cursor' function).\n\
- If the second optional argument IGNORE-KEYBOARD is non-nil, ignore all\n\
- keyboard events during the grab.\n\
- Returns t if the grab is successful, nil otherwise.")
- (device, cursor, ignore_keyboard)
- Lisp_Object device, cursor, ignore_keyboard;
- {
- Window w;
- int pointer_mode, result;
- struct device *d = get_x_device (device);
-
- if (! NILP (cursor))
- CHECK_CURSOR (cursor, 0);
-
- if (! NILP (ignore_keyboard))
- pointer_mode = GrabModeSync;
- else
- pointer_mode = GrabModeAsync;
-
- w = XtWindow (FRAME_X_TEXT_WIDGET (device_selected_frame (d)));
-
- /* #### Possibly this needs to gcpro the cursor somehow, but it doesn't
- seem to cause a problem if XFreeCursor is called on a cursor in use
- in a grab; I suppose the X server counts the grab as a reference
- and doesn't free it until it exits? */
- result = XGrabPointer (DEVICE_X_DISPLAY (d), w,
- False,
- ButtonMotionMask | ButtonPressMask
- | ButtonReleaseMask | PointerMotionHintMask,
- GrabModeAsync, /* Keep pointer events flowing */
- pointer_mode, /* Stall keyboard events */
- w, /* Stay in this window */
- (NILP (cursor) ? 0 : XCURSOR (cursor)->cursor),
- CurrentTime);
- return ((result == GrabSuccess) ? Qt : Qnil);
- }
-
- DEFUN ("x-ungrab-pointer", Fx_ungrab_pointer, Sx_ungrab_pointer, 0, 1, 0,
- "Release a pointer grab made with `x-grab-pointer'.\n\
- If optional first arg DEVICE is nil the default device is used.\n\
- If it is t the pointer will be released on all X devices.")
- (device)
- Lisp_Object device;
- {
- if (!EQ (device, Qt))
- {
- Display *dpy = get_x_display (device);
- XUngrabPointer (dpy, CurrentTime);
- }
- else
- {
- Lisp_Object rest;
- DEVICE_LOOP (rest)
- {
- struct device *d = XDEVICE (XCAR (rest));
-
- if (DEVICE_IS_X (d))
- XUngrabPointer (DEVICE_X_DISPLAY (d), CurrentTime);
- }
- }
-
- return Qnil;
- }
-
- DEFUN ("x-grab-keyboard", Fx_grab_keyboard, Sx_grab_keyboard, 0, 1, 0,
- "Grab the keyboard on the given device (defaulting to the selected one).\n\
- So long as the keyboard is grabbed, all keyboard events will be delivered\n\
- to emacs -- it is not possible for other X clients to eavesdrop on them.\n\
- Ungrab the keyboard with `x-ungrab-keyboard' (use an unwind-protect).\n\
- Returns t if the grab was successful; nil otherwise.")
- (device)
- Lisp_Object device;
- {
- struct device *d = get_x_device (device);
- Window w = XtWindow (FRAME_X_TEXT_WIDGET (device_selected_frame (d)));
- Display *dpy = DEVICE_X_DISPLAY (d);
- Status status;
- XSync (dpy, False);
- status = XGrabKeyboard (dpy, w, True,
- /* I don't really understand sync-vs-async
- grabs, but this is what xterm does. */
- GrabModeAsync, GrabModeAsync,
- /* Use the timestamp of the last user action
- read by emacs proper; xterm uses CurrentTime
- but there's a comment that says "wrong"...
- (Despite the name this is the time of the
- last key or mouse event.) */
- DEVICE_X_MOUSE_TIMESTAMP (d));
- if (status == GrabSuccess)
- {
- /* The XUngrabKeyboard should generate a FocusIn back to this
- window but it doesn't unless we explicitly set focus to the
- window first (which should already have it. The net result
- is that without this call when x-ungrab-keyboard is called
- the selected frame ends up not having focus. */
- XSetInputFocus (dpy, w, RevertToParent, DEVICE_X_MOUSE_TIMESTAMP (d));
- return Qt;
- }
- else
- return Qnil;
- }
-
- DEFUN ("x-ungrab-keyboard", Fx_ungrab_keyboard, Sx_ungrab_keyboard, 0, 1, 0,
- "Release a keyboard grab made with `x-grab-keyboard'.")
- (device)
- Lisp_Object device;
- {
- Display *dpy = get_x_display (device);
- XUngrabKeyboard (dpy, CurrentTime);
- return Qnil;
- }
-
-
- /************************************************************************/
- /* initialization */
- /************************************************************************/
-
- void
- syms_of_device_x (void)
- {
- defsubr (&Sx_debug_mode);
- defsubr (&Sx_get_resource);
- defsubr (&Sx_get_resource_prefix);
- defsubr (&Sx_put_resource);
-
- defsubr (&Sdefault_x_device);
- defsubr (&Sdevice_x_display);
- defsubr (&Sdevice_x_argv_list);
- defsubr (&Sx_display_visual_class);
- defsubr (&Sx_server_vendor);
- defsubr (&Sx_server_version);
- defsubr (&Sx_valid_keysym_name_p);
-
- defsubr (&Sx_grab_pointer);
- defsubr (&Sx_ungrab_pointer);
- defsubr (&Sx_grab_keyboard);
- defsubr (&Sx_ungrab_keyboard);
-
- defsymbol (&Qargv_list, "argv-list");
- defsymbol (&Qx_error, "x-error");
-
- }
-
- void
- device_type_create_x (void)
- {
- INITIALIZE_DEVICE_TYPE (x, "x", "device-x-p");
-
- DEVICE_HAS_METHOD (x, init_device);
- DEVICE_HAS_METHOD (x, initially_selected_for_input);
- DEVICE_HAS_METHOD (x, mark_device);
- DEVICE_HAS_METHOD (x, delete_device);
- DEVICE_HAS_METHOD (x, device_pixel_width);
- DEVICE_HAS_METHOD (x, device_pixel_height);
- DEVICE_HAS_METHOD (x, device_mm_width);
- DEVICE_HAS_METHOD (x, device_mm_height);
- DEVICE_HAS_METHOD (x, device_bitplanes);
- DEVICE_HAS_METHOD (x, device_color_cells);
- }
-
- void
- vars_of_device_x (void)
- {
- DEFVAR_LISP ("x-emacs-application-class", &Vx_emacs_application_class,
- "The X application class of the XEmacs process.\n\
- This controls, among other things, the name of the `app-defaults' file\n\
- that XEmacs will use. For changes to this variable to take effect, they\n\
- must be made before the connection to the X server is initialized, that is,\n\
- this variable may only be changed before emacs is dumped, or by setting it\n\
- in the file lisp/term/x-win.el.");
- Vx_emacs_application_class = Fpurecopy (build_string ("Emacs"));
-
- Fprovide (Qx);
-
- staticpro (&Vdefault_x_device);
- Vdefault_x_device = Qnil;
-
- error_expected = 0;
- error_occurred = 0;
-
- in_resource_setting = 0;
- in_specifier_change_function = 0;
- }
-