/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include "gdk.h"
#include "gdkinternals.h"
#ifndef HAVE_XCONVERTCASE
#include "gdkkeysyms.h"
#endif
typedef struct _GdkPredicate GdkPredicate;
typedef struct _GdkErrorTrap GdkErrorTrap;
struct _GdkPredicate
{
GdkEventFunc func;
gpointer data;
};
struct _GdkErrorTrap
{
gint error_warnings;
gint error_code;
};
/* Private variable declarations
*/
static int gdk_initialized = 0; /* 1 if the library is initialized,
* 0 otherwise.
*/
static GSList *gdk_error_traps = NULL; /* List of error traps */
static GSList *gdk_error_trap_free_list = NULL; /* Free list */
static gchar *gdk_progclass = NULL;
#ifdef G_ENABLE_DEBUG
static const GDebugKey gdk_debug_keys[] = {
{"events", GDK_DEBUG_EVENTS},
{"misc", GDK_DEBUG_MISC},
{"dnd", GDK_DEBUG_DND},
{"xim", GDK_DEBUG_XIM}
};
static const int gdk_ndebug_keys = sizeof(gdk_debug_keys)/sizeof(GDebugKey);
#endif /* G_ENABLE_DEBUG */
static GdkArgContext *
gdk_arg_context_new (gpointer cb_data)
{
GdkArgContext *result = g_new (GdkArgContext, 1);
result->tables = g_ptr_array_new ();
result->cb_data = cb_data;
return result;
}
static void
gdk_arg_context_destroy (GdkArgContext *context)
{
g_ptr_array_free (context->tables, TRUE);
g_free (context);
}
static void
gdk_arg_context_add_table (GdkArgContext *context, GdkArgDesc *table)
{
g_ptr_array_add (context->tables, table);
}
static void
gdk_arg_context_parse (GdkArgContext *context, gint *argc, gchar ***argv)
{
int i, j, k;
/* Save a copy of the original argc and argv */
if (argc && argv)
{
for (i = 1; i < *argc; i++)
{
char *arg;
if (!(*argv)[i][0] == '-' && (*argv)[i][1] == '-')
continue;
arg = (*argv)[i] + 2;
/* '--' terminates list of arguments */
if (arg == 0)
{
(*argv)[i] = NULL;
break;
}
for (j = 0; j < context->tables->len; j++)
{
GdkArgDesc *table = context->tables->pdata[j];
for (k = 0; table[k].name; k++)
{
switch (table[k].type)
{
case GDK_ARG_STRING:
case GDK_ARG_CALLBACK:
case GDK_ARG_INT:
{
int len = strlen (table[k].name);
if (strncmp (arg, table[k].name, len) == 0 &&
(arg[len] == '=' || argc[len] == 0))
{
char *value = NULL;
(*argv)[i] = NULL;
if (arg[len] == '=')
value = arg + len + 1;
else if (i < *argc - 1)
{
value = (*argv)[i + 1];
(*argv)[i+1] = NULL;
i++;
}
else
value = "";
switch (table[k].type)
{
case GDK_ARG_STRING:
*(gchar **)table[k].location = g_strdup (value);
break;
case GDK_ARG_INT:
*(gint *)table[k].location = atoi (value);
break;
case GDK_ARG_CALLBACK:
(*table[k].callback)(table[k].name, value, context->cb_data);
break;
default:
;
}
goto next_arg;
}
break;
}
case GDK_ARG_BOOL:
case GDK_ARG_NOBOOL:
if (strcmp (arg, table[k].name) == 0)
{
(*argv)[i] = NULL;
*(gboolean *)table[k].location = (table[k].type == GDK_ARG_BOOL) ? TRUE : FALSE;
goto next_arg;
}
}
}
}
next_arg:
;
}
for (i = 1; i < *argc; i++)
{
for (k = i; k < *argc; k++)
if ((*argv)[k] != NULL)
break;
if (k > i)
{
k -= i;
for (j = i + k; j < *argc; j++)
(*argv)[j-k] = (*argv)[j];
*argc -= k;
}
}
}
}
#ifdef G_ENABLE_DEBUG
static void
gdk_arg_debug_cb (const char *key, const char *value, gpointer user_data)
{
_gdk_debug_flags |= g_parse_debug_string (value,
(GDebugKey *) gdk_debug_keys,
gdk_ndebug_keys);
}
static void
gdk_arg_no_debug_cb (const char *key, const char *value, gpointer user_data)
{
_gdk_debug_flags &= ~g_parse_debug_string (value,
(GDebugKey *) gdk_debug_keys,
gdk_ndebug_keys);
}
#endif /* G_ENABLE_DEBUG */
static void
gdk_arg_class_cb (const char *key, const char *value, gpointer user_data)
{
gdk_set_program_class (value);
}
static void
gdk_arg_name_cb (const char *key, const char *value, gpointer user_data)
{
g_set_prgname (value);
}
static GdkArgDesc gdk_args[] = {
{ "class" , GDK_ARG_STRING, NULL, gdk_arg_class_cb },
{ "name", GDK_ARG_STRING, NULL, gdk_arg_name_cb },
#ifdef G_ENABLE_DEBUG
{ "gdk-debug", GDK_ARG_CALLBACK, NULL, gdk_arg_debug_cb },
{ "gdk-no-debug", GDK_ARG_CALLBACK, NULL, gdk_arg_no_debug_cb },
#endif /* G_ENABLE_DEBUG */
{ NULL }
};
/*
*--------------------------------------------------------------
* gdk_init_check
*
* Initialize the library for use.
*
* Arguments:
* "argc" is the number of arguments.
* "argv" is an array of strings.
*
* Results:
* "argc" and "argv" are modified to reflect any arguments
* which were not handled. (Such arguments should either
* be handled by the application or dismissed). If initialization
* fails, returns FALSE, otherwise TRUE.
*
* Side effects:
* The library is initialized.
*
*--------------------------------------------------------------
*/
gboolean
gdk_init_check (int *argc,
char ***argv)
{
gchar **argv_orig = NULL;
gint argc_orig = 0;
GdkArgContext *arg_context;
gboolean result;
int i;
if (gdk_initialized)
return TRUE;
if (argc && argv)
{
argc_orig = *argc;
argv_orig = g_malloc ((argc_orig + 1) * sizeof (char*));
for (i = 0; i < argc_orig; i++)
argv_orig[i] = g_strdup ((*argv)[i]);
argv_orig[argc_orig] = NULL;
if (*argc > 0)
{
gchar *d;
d = strrchr((*argv)[0], G_DIR_SEPARATOR);
if (d != NULL)
g_set_prgname (d + 1);
else
g_set_prgname ((*argv)[0]);
}
}
#ifdef G_ENABLE_DEBUG
{
gchar *debug_string = getenv("GDK_DEBUG");
if (debug_string != NULL)
_gdk_debug_flags = g_parse_debug_string (debug_string,
(GDebugKey *) gdk_debug_keys,
gdk_ndebug_keys);
}
#endif /* G_ENABLE_DEBUG */
arg_context = gdk_arg_context_new (NULL);
gdk_arg_context_add_table (arg_context, gdk_args);
gdk_arg_context_add_table (arg_context, _gdk_windowing_args);
gdk_arg_context_parse (arg_context, argc, argv);
gdk_arg_context_destroy (arg_context);
GDK_NOTE (MISC, g_message ("progname: \"%s\"", g_get_prgname ()));
g_type_init ();
result = _gdk_windowing_init_check (argc_orig, argv_orig);
for (i = 0; i < argc_orig; i++)
g_free(argv_orig[i]);
g_free(argv_orig);
if (!result)
return FALSE;
_gdk_visual_init ();
_gdk_windowing_window_init ();
_gdk_windowing_image_init ();
_gdk_events_init ();
_gdk_input_init ();
_gdk_dnd_init ();
gdk_initialized = 1;
return TRUE;
}
void
gdk_init (int *argc, char ***argv)
{
if (!gdk_init_check (argc, argv))
{
g_warning ("cannot open display: %s", gdk_get_display ());
exit(1);
}
}
/*
*--------------------------------------------------------------
* gdk_exit
*
* Restores the library to an un-itialized state and exits
* the program using the "exit" system call.
*
* Arguments:
* "errorcode" is the error value to pass to "exit".
*
* Results:
* Allocated structures are freed and the program exits
* cleanly.
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_exit (gint errorcode)
{
/* de-initialisation is done by the gdk_exit_funct(),
no need to do this here (Alex J.) */
exit (errorcode);
}
#if 0
/* This is disabled, but the code isn't removed, because we might
* want to have some sort of explicit way to shut down GDK cleanly
* at some point in the future.
*/
/*
*--------------------------------------------------------------
* gdk_exit_func
*
* This is the "atexit" function that makes sure the
* library gets a chance to cleanup.
*
* Arguments:
*
* Results:
*
* Side effects:
* The library is un-initialized and the program exits.
*
*--------------------------------------------------------------
*/
static void
gdk_exit_func (void)
{
static gboolean in_gdk_exit_func = FALSE;
/* This is to avoid an infinite loop if a program segfaults in
an atexit() handler (and yes, it does happen, especially if a program
has trounced over memory too badly for even g_message to work) */
if (in_gdk_exit_func == TRUE)
return;
in_gdk_exit_func = TRUE;
if (gdk_initialized)
{
_gdk_image_exit ();
_gdk_input_exit ();
_gdk_windowing_exit ();
gdk_initialized = 0;
}
}
#endif
/*************************************************************
* gdk_error_trap_push:
* Push an error trap. X errors will be trapped until
* the corresponding gdk_error_pop(), which will return
* the error code, if any.
* arguments:
*
* results:
*************************************************************/
void
gdk_error_trap_push (void)
{
GSList *node;
GdkErrorTrap *trap;
if (gdk_error_trap_free_list)
{
node = gdk_error_trap_free_list;
gdk_error_trap_free_list = gdk_error_trap_free_list->next;
}
else
{
node = g_slist_alloc ();
node->data = g_new (GdkErrorTrap, 1);
}
node->next = gdk_error_traps;
gdk_error_traps = node;
trap = node->data;
trap->error_code = _gdk_error_code;
trap->error_warnings = _gdk_error_warnings;
_gdk_error_code = 0;
_gdk_error_warnings = 0;
}
/*************************************************************
* gdk_error_trap_pop:
* Pop an error trap added with gdk_error_push()
* arguments:
*
* results:
* 0, if no error occured, otherwise the error code.
*************************************************************/
gint
gdk_error_trap_pop (void)
{
GSList *node;
GdkErrorTrap *trap;
gint result;
g_return_val_if_fail (gdk_error_traps != NULL, 0);
node = gdk_error_traps;
gdk_error_traps = gdk_error_traps->next;
node->next = gdk_error_trap_free_list;
gdk_error_trap_free_list = node;
result = _gdk_error_code;
trap = node->data;
_gdk_error_code = trap->error_code;
_gdk_error_warnings = trap->error_warnings;
return result;
}
void
gdk_threads_enter ()
{
GDK_THREADS_ENTER ();
}
void
gdk_threads_leave ()
{
GDK_THREADS_LEAVE ();
}
/**
* gdk_threads_init:
*
* Initializes GDK so that it can be used from multiple threads
* in conjunction with gdk_threads_enter() and gdk_threads_leave().
* g_thread_init() must be called previous to this function.
*
* This call must be made before any use of the main loop from
* GTK+; to be safe, call it before gtk_init().
**/
void
gdk_threads_init ()
{
if (!g_thread_supported ())
g_error ("g_thread_init() must be called before gdk_threads_init()");
gdk_threads_mutex = g_mutex_new ();
}
G_CONST_RETURN char *
gdk_get_program_class (void)
{
if (gdk_progclass == NULL)
{
gdk_progclass = g_strdup (g_get_prgname ());
gdk_progclass[0] = g_ascii_toupper (gdk_progclass[0]);
}
return gdk_progclass;
}
void
gdk_set_program_class (const char *program_class)
{
if (gdk_progclass)
g_free (gdk_progclass);
gdk_progclass = g_strdup (program_class);
}