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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimp.c
*
* 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
* Library 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.
*/
#include "config.h"
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef WAIT_ANY
#define WAIT_ANY -1
#endif
#include <glib.h>
#ifndef G_OS_WIN32
#include "libgimpbase/gimpsignal.h"
#else
#include <signal.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#if defined(USE_SYSV_SHM)
#ifdef HAVE_IPC_H
#include <sys/ipc.h>
#endif
#ifdef HAVE_SHM_H
#include <sys/shm.h>
#endif
#elif defined(USE_POSIX_SHM)
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <fcntl.h>
#include <sys/mman.h>
#endif /* USE_POSIX_SHM */
#if defined(G_OS_WIN32) || defined(G_WITH_CYGWIN)
# define STRICT
# include <windows.h>
# undef RGB
# define USE_WIN32_SHM 1
#endif
#include <libintl.h>
#include <locale.h>
#ifndef LIBGIMP_COMPILATION
#define LIBGIMP_COMPILATION
#endif
#include "libgimpbase/gimpbasetypes.h"
#include "libgimpbase/gimpbase-private.h"
#include "libgimpbase/gimpenv.h"
#include "libgimpbase/gimpprotocol.h"
#include "libgimpbase/gimpwire.h"
#include "gimp.h"
#include "gimpunitcache.h"
#define TILE_MAP_SIZE (_tile_width * _tile_height * 4)
#define ERRMSG_SHM_FAILED "Could not attach to gimp shared memory segment"
/* Maybe this should go in a public header if we add other things to it */
typedef enum
{
GIMP_DEBUG_PID = 1 << 0,
GIMP_DEBUG_FATAL_WARNINGS = 1 << 1,
GIMP_DEBUG_QUERY = 1 << 2,
GIMP_DEBUG_INIT = 1 << 3,
GIMP_DEBUG_RUN = 1 << 4,
GIMP_DEBUG_QUIT = 1 << 5,
GIMP_DEBUG_DEFAULT = (GIMP_DEBUG_RUN | GIMP_DEBUG_FATAL_WARNINGS)
} GimpDebugFlag;
#define WRITE_BUFFER_SIZE 1024
void gimp_read_expect_msg (WireMessage *msg,
gint type);
static void gimp_close (void);
static void gimp_debug_stop (void);
static void gimp_message_func (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer data);
#ifndef G_OS_WIN32
static void gimp_plugin_sigfatal_handler (gint sig_num);
#endif
static gboolean gimp_plugin_io_error_handler (GIOChannel *channel,
GIOCondition cond,
gpointer data);
static gboolean gimp_write (GIOChannel *channel,
guint8 *buf,
gulong count,
gpointer user_data);
static gboolean gimp_flush (GIOChannel *channel,
gpointer user_data);
static void gimp_loop (void);
static void gimp_config (GPConfig *config);
static void gimp_proc_run (GPProcRun *proc_run);
static void gimp_temp_proc_run (GPProcRun *proc_run);
static void gimp_process_message (WireMessage *msg);
static void gimp_single_message (void);
static gboolean gimp_extension_read (GIOChannel *channel,
GIOCondition condition,
gpointer data);
static GIOChannel *_readchannel = NULL;
GIOChannel *_writechannel = NULL;
const guint gimp_major_version = GIMP_MAJOR_VERSION;
const guint gimp_minor_version = GIMP_MINOR_VERSION;
const guint gimp_micro_version = GIMP_MICRO_VERSION;
#ifdef USE_WIN32_SHM
static HANDLE shm_handle;
#endif
static gint _tile_width = -1;
static gint _tile_height = -1;
static gint _shm_ID = -1;
static guchar *_shm_addr = NULL;
static gdouble _gamma_val = 1.0;
static gboolean _install_cmap = FALSE;
static gboolean _show_tool_tips = TRUE;
static gint _min_colors = 144;
static gint _gdisp_ID = -1;
static gchar *_wm_class = NULL;
static gchar *_display_name = NULL;
static gint _monitor_number = 0;
static const gchar *progname = NULL;
static guint8 write_buffer[WRITE_BUFFER_SIZE];
static guint write_buffer_index = 0;
static GimpStackTraceMode stack_trace_mode = GIMP_STACK_TRACE_NEVER;
static GHashTable *temp_proc_ht = NULL;
static guint gimp_debug_flags = 0;
static const GDebugKey gimp_debug_keys[] =
{
{ "pid", GIMP_DEBUG_PID },
{ "fatal-warnings", GIMP_DEBUG_FATAL_WARNINGS },
{ "fw", GIMP_DEBUG_FATAL_WARNINGS },
{ "query", GIMP_DEBUG_QUERY },
{ "init", GIMP_DEBUG_INIT },
{ "run", GIMP_DEBUG_RUN },
{ "quit", GIMP_DEBUG_QUIT },
{ "on", GIMP_DEBUG_DEFAULT }
};
static GimpPlugInInfo PLUG_IN_INFO;
/**
* gimp_main:
* @info: the PLUG_IN_INFO structure
* @argc: the number of arguments
* @argv: the arguments
*
* The main procedure that must be called with the PLUG_IN_INFO structure
* and the 'argc' and 'argv' that are passed to "main".
*
* Return value:
**/
gint
gimp_main (const GimpPlugInInfo *info,
gint argc,
gchar *argv[])
{
gchar *basename;
const gchar *env_string;
gchar *debug_string;
#ifdef G_OS_WIN32
gint i, j, k;
/* Check for exe file name with spaces in the path having been split up
* by buggy NT C runtime, or something. I don't know why this happens
* on NT (including w2k), but not on w95/98.
*/
for (i = 1; i < argc; i++)
{
k = strlen (argv[i]);
if (k > 10)
{
if (g_ascii_strcasecmp (argv[i] + k - 4, ".exe") == 0)
{
/* Found the end of the executable name, most probably.
* Splice the parts of the name back together.
*/
GString *s;
s = g_string_new (argv[0]);
for (j = 1; j <= i; j++)
{
s = g_string_append_c (s, ' ');
s = g_string_append (s, argv[j]);
}
argv[0] = s->str;
/* Move rest of argv down */
for (j = 1; j < argc - i; j++)
argv[j] = argv[j + i];
argv[argc - i] = NULL;
argc -= i;
break;
}
}
}
#endif
g_assert (info != NULL);
PLUG_IN_INFO = *info;
if ((argc != 6) || (strcmp (argv[1], "-gimp") != 0))
{
g_printerr ("%s is a gimp plug-in and must be run by the gimp to be used\n", argv[0]);
return 1;
}
progname = argv[0];
basename = g_path_get_basename (progname);
g_set_prgname (basename);
env_string = g_getenv ("GIMP_PLUGIN_DEBUG");
if (env_string)
{
debug_string = strchr (env_string, ',');
if (debug_string)
{
gint len = debug_string - env_string;
if ((strlen (basename) == len) &&
(strncmp (basename, env_string, len) == 0))
{
gimp_debug_flags =
g_parse_debug_string (debug_string + 1,
gimp_debug_keys,
G_N_ELEMENTS (gimp_debug_keys));
}
}
else if (strcmp (env_string, basename) == 0)
{
gimp_debug_flags = GIMP_DEBUG_DEFAULT;
}
}
g_free (basename);
stack_trace_mode = (GimpStackTraceMode) CLAMP (atoi (argv[5]),
GIMP_STACK_TRACE_NEVER,
GIMP_STACK_TRACE_ALWAYS);
#ifndef G_OS_WIN32
/* No use catching these on Win32, the user won't get any meaningful
* stack trace from glib anyhow. It's better to let Windows inform
* about the program error, and offer debugging if the plug-in
* has been built with MSVC, and the user has MSVC installed.
*/
gimp_signal_private (SIGHUP, gimp_plugin_sigfatal_handler, 0);
gimp_signal_private (SIGINT, gimp_plugin_sigfatal_handler, 0);
gimp_signal_private (SIGQUIT, gimp_plugin_sigfatal_handler, 0);
gimp_signal_private (SIGBUS, gimp_plugin_sigfatal_handler, 0);
gimp_signal_private (SIGSEGV, gimp_plugin_sigfatal_handler, 0);
gimp_signal_private (SIGTERM, gimp_plugin_sigfatal_handler, 0);
gimp_signal_private (SIGFPE, gimp_plugin_sigfatal_handler, 0);
/* Ignore SIGPIPE from crashing Gimp */
gimp_signal_private (SIGPIPE, SIG_IGN, 0);
/* Restart syscalls interrupted by SIGCHLD */
gimp_signal_private (SIGCHLD, SIG_DFL, SA_RESTART);
#endif
_readchannel = g_io_channel_unix_new (atoi (argv[2]));
_writechannel = g_io_channel_unix_new (atoi (argv[3]));
g_io_channel_set_encoding (_readchannel, NULL, NULL);
g_io_channel_set_encoding (_writechannel, NULL, NULL);
g_io_channel_set_buffered (_readchannel, FALSE);
g_io_channel_set_buffered (_writechannel, FALSE);
g_io_channel_set_close_on_unref (_readchannel, TRUE);
g_io_channel_set_close_on_unref (_writechannel, TRUE);
gp_init ();
wire_set_writer (gimp_write);
wire_set_flusher (gimp_flush);
/* initialize units */
{
GimpUnitVTable vtable;
vtable.unit_get_number_of_units = _gimp_unit_cache_get_number_of_units;
vtable.unit_get_number_of_built_in_units = _gimp_unit_cache_get_number_of_built_in_units;
vtable.unit_new = _gimp_unit_cache_new;
vtable.unit_get_deletion_flag = _gimp_unit_cache_get_deletion_flag;
vtable.unit_set_deletion_flag = _gimp_unit_cache_set_deletion_flag;
vtable.unit_get_factor = _gimp_unit_cache_get_factor;
vtable.unit_get_digits = _gimp_unit_cache_get_digits;
vtable.unit_get_identifier = _gimp_unit_cache_get_identifier;
vtable.unit_get_symbol = _gimp_unit_cache_get_symbol;
vtable.unit_get_abbreviation = _gimp_unit_cache_get_abbreviation;
vtable.unit_get_singular = _gimp_unit_cache_get_singular;
vtable.unit_get_plural = _gimp_unit_cache_get_plural;
gimp_base_init (&vtable);
}
/* initialize i18n support */
setlocale (LC_ALL, "");
bindtextdomain (GETTEXT_PACKAGE"-libgimp", gimp_locale_directory ());
#ifdef HAVE_BIND_TEXTDOMAIN_CODESET
bind_textdomain_codeset (GETTEXT_PACKAGE"-libgimp", "UTF-8");
#endif
/* set handler both for the "LibGimp" and "" domains */
g_log_set_handler (G_LOG_DOMAIN,
G_LOG_LEVEL_MESSAGE,
gimp_message_func,
NULL);
g_log_set_handler (NULL,
G_LOG_LEVEL_MESSAGE,
gimp_message_func,
NULL);
if (gimp_debug_flags & GIMP_DEBUG_FATAL_WARNINGS)
{
GLogLevelFlags fatal_mask;
fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
g_log_set_always_fatal (fatal_mask);
}
if (strcmp (argv[4], "-query") == 0)
{
if (PLUG_IN_INFO.init_proc)
gp_has_init_write (_writechannel, NULL);
if (gimp_debug_flags & GIMP_DEBUG_QUERY)
gimp_debug_stop ();
if (PLUG_IN_INFO.query_proc)
(* PLUG_IN_INFO.query_proc) ();
gimp_close ();
return EXIT_SUCCESS;
}
if (strcmp (argv[4], "-init") == 0)
{
if (gimp_debug_flags & GIMP_DEBUG_INIT)
gimp_debug_stop ();
if (PLUG_IN_INFO.init_proc)
(* PLUG_IN_INFO.init_proc) ();
gimp_close ();
return EXIT_SUCCESS;
}
if (gimp_debug_flags & GIMP_DEBUG_RUN)
gimp_debug_stop ();
else if (gimp_debug_flags & GIMP_DEBUG_PID)
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Here I am!");
temp_proc_ht = g_hash_table_new (g_str_hash, g_str_equal);
g_io_add_watch (_readchannel,
G_IO_ERR | G_IO_HUP,
gimp_plugin_io_error_handler,
NULL);
gimp_loop ();
return EXIT_SUCCESS;
}
/**
* gimp_quit:
*
* Forcefully causes the gimp library to exit and close down its
* connection to main gimp application. This function never returns.
**/
void
gimp_quit (void)
{
gimp_close ();
exit (EXIT_SUCCESS);
}
/**
* gimp_install_procedure:
* @name: the procedure's name.
* @blurb: a short text describing what the procedure does.
* @help: the help text for the procedure (usually considerably
* longer than @blurb).
* @author: the procedure's author(s).
* @copyright: the procedure's copyright.
* @date: the date the procedure was added.
* @menu_path: the procedure's menu path, or #NULL if the procedure has
* no menu entry.
* @image_types: the drawable types the procedure can handle.
* @type: the type of the procedure.
* @n_params: the number of parameters the procedure takes.
* @n_return_vals: the number of return values the procedure returns.
* @params: the procedure's parameters.
* @return_vals: the procedure's return values.
*
* Installs a new procedure with the PDB (procedural database).
*
* Call this function from within your Plug-In's query() function for
* each procedure your Plug-In implements.
*
* The @name parameter is mandatory and should be unique, or it will
* overwrite an already existing procedure (overwrite procedures only
* if you know what you're doing).
*
* The @blurb, @help, @author, @copyright and @date parameters are
* optional but then you shouldn't write procedures without proper
* documentation, should you.
*
* @menu_path can be #NULL, or a string in the form
* "&lt;Domain&gt;/Path/To/My/Menu"
* (e.g. "&lt;Image&gt;/Filters/Render/Useless") if you want your
* procedure to be available via a menu. Allowed prefixes are
* &lt;Toolbox&gt;, &lt;Image&gt;, &lt;Load&gt; and &lt;Save&gt;
*
* @type must be one of #GIMP_PLUGIN or #GIMP_EXTENSION. Note that
* temporary procedures must be installed using
* gimp_install_temp_proc().
*
* NOTE: Unlike the GIMP 1.2 API, #GIMP_EXTENSION no longer means
* that the procedure's menu prefix is &lt;Toolbox&gt;, but that
* it will install temporary procedures. Therefore, the GIMP core
* will wait until the #GIMP_EXTENSION procedure has called
* gimp_extension_ack(), which means that the procedure has done
* its initialization, installed its temporary procedures and is
* ready to run.
*
* <emphasis>Not calling gimp_extension_ack() from a #GIMP_EXTENSION
* procedure will cause th GIMP core to lock up.</emphasis>
*
* Additionally, a #GIMP_EXTENSION procedure with no parameters
* (@n_params == 0 and @params == #NULL) is an "automatic" extension
* that will be automatically started on each GIMP startup.
**/
void
gimp_install_procedure (const gchar *name,
const gchar *blurb,
const gchar *help,
const gchar *author,
const gchar *copyright,
const gchar *date,
const gchar *menu_path,
const gchar *image_types,
GimpPDBProcType type,
gint n_params,
gint n_return_vals,
const GimpParamDef *params,
const GimpParamDef *return_vals)
{
GPProcInstall proc_install;
g_return_if_fail (name != NULL);
g_return_if_fail (type != GIMP_INTERNAL);
g_return_if_fail ((n_params == 0 && params == NULL) ||
(n_params > 0 && params != NULL));
g_return_if_fail ((n_return_vals == 0 && return_vals == NULL) ||
(n_return_vals > 0 && return_vals != NULL));
proc_install.name = (gchar *) name;
proc_install.blurb = (gchar *) blurb;
proc_install.help = (gchar *) help;
proc_install.author = (gchar *) author;
proc_install.copyright = (gchar *) copyright;
proc_install.date = (gchar *) date;
proc_install.menu_path = (gchar *) menu_path;
proc_install.image_types = (gchar *) image_types;
proc_install.type = type;
proc_install.nparams = n_params;
proc_install.nreturn_vals = n_return_vals;
proc_install.params = (GPParamDef *) params;
proc_install.return_vals = (GPParamDef *) return_vals;
if (! gp_proc_install_write (_writechannel, &proc_install, NULL))
gimp_quit ();
}
/**
* gimp_install_temp_proc:
* @name: the procedure's name.
* @blurb: a short text describing what the procedure does.
* @help: the help text for the procedure (usually considerably
* longer than @blurb).
* @author: the procedure's author(s).
* @copyright: the procedure's copyright.
* @date: the date the procedure was added.
* @menu_path: the procedure's menu path, or #NULL if the procedure has
* no menu entry.
* @image_types: the drawable types the procedure can handle.
* @type: the type of the procedure.
* @n_params: the number of parameters the procedure takes.
* @n_return_vals: the number of return values the procedure returns.
* @params: the procedure's parameters.
* @return_vals: the procedure's return values.
* @run_proc: the function to call for executing the procedure.
*
* Installs a new temporary procedure with the PDB (procedural database).
*
* A temporary procedure is a procedure which is only available while
* one of your Plug-In's "real" procedures is running.
*
* See gimp_install_procedure() for most details.
*
* @type <emphasis>must</emphasis> be #GIMP_TEMPORARY or the function
* will fail.
*
* @run_proc is the function which will be called to execute the
* procedure.
*
* NOTE: Normally, Plug-In communication is triggered by the Plug-In
* and the GIMP core only responds to the Plug-In's requests. You must
* explicitely enable receiving of temporary procedure run requests
* using either gimp_extension_enable() or
* gimp_extension_process(). See this functions' documentation for
* details.
**/
void
gimp_install_temp_proc (const gchar *name,
const gchar *blurb,
const gchar *help,
const gchar *author,
const gchar *copyright,
const gchar *date,
const gchar *menu_path,
const gchar *image_types,
GimpPDBProcType type,
gint n_params,
gint n_return_vals,
const GimpParamDef *params,
const GimpParamDef *return_vals,
GimpRunProc run_proc)
{
g_return_if_fail (name != NULL);
g_return_if_fail ((n_params == 0 && params == NULL) ||
(n_params > 0 && params != NULL));
g_return_if_fail ((n_return_vals == 0 && return_vals == NULL) ||
(n_return_vals > 0 && return_vals != NULL));
g_return_if_fail (type == GIMP_TEMPORARY);
g_return_if_fail (run_proc != NULL);
gimp_install_procedure (name,
blurb, help,
author, copyright, date,
menu_path,
image_types,
type,
n_params, n_return_vals,
params, return_vals);
/* Insert the temp proc run function into the hash table */
g_hash_table_insert (temp_proc_ht, g_strdup (name), (gpointer) run_proc);
}
/**
* gimp_uninstall_temp_proc:
* @name: the procedure's name
*
* Uninstalls a temporary procedure which has previously been
* installed using gimp_install_temp_proc().
**/
void
gimp_uninstall_temp_proc (const gchar *name)
{
GPProcUninstall proc_uninstall;
gpointer hash_name;
gboolean found;
g_return_if_fail (name != NULL);
proc_uninstall.name = (gchar *) name;
if (! gp_proc_uninstall_write (_writechannel, &proc_uninstall, NULL))
gimp_quit ();
found = g_hash_table_lookup_extended (temp_proc_ht, name, &hash_name, NULL);
if (found)
{
g_hash_table_remove (temp_proc_ht, (gpointer) name);
g_free (hash_name);
}
}
/**
* gimp_run_procedure:
* @name: the name of the procedure to run
* @n_return_vals: return location for the number of return values
* @Varargs: list of procedure parameters
*
* This function calls a GIMP procedure and returns its return values.
*
* The procedure's parameters are given by a va_list in the format
* (type, value, type, value) and must be terminated by #GIMP_PDB_END.
*
* This function converts the va_list of parameters into an array
* and passes them to gimp_run_procedure2().
*
* Return value: the procedure's return values.
**/
GimpParam *
gimp_run_procedure (const gchar *name,
gint *n_return_vals,
...)
{
GimpPDBArgType param_type;
GimpParam *return_vals;
GimpParam *params = NULL;
gint n_params = 0;
va_list args;
gint i;
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (n_return_vals != NULL, NULL);
va_start (args, n_return_vals);
param_type = va_arg (args, GimpPDBArgType);
while (param_type != GIMP_PDB_END)
{
switch (param_type)
{
case GIMP_PDB_INT32:
case GIMP_PDB_DISPLAY:
case GIMP_PDB_IMAGE:
case GIMP_PDB_LAYER:
case GIMP_PDB_CHANNEL:
case GIMP_PDB_DRAWABLE:
case GIMP_PDB_SELECTION:
case GIMP_PDB_BOUNDARY:
case GIMP_PDB_PATH:
case GIMP_PDB_STATUS:
(void) va_arg (args, gint);
break;
case GIMP_PDB_INT16:
(void) va_arg (args, gint);
break;
case GIMP_PDB_INT8:
(void) va_arg (args, gint);
break;
case GIMP_PDB_FLOAT:
(void) va_arg (args, gdouble);
break;
case GIMP_PDB_STRING:
(void) va_arg (args, gchar *);
break;
case GIMP_PDB_INT32ARRAY:
(void) va_arg (args, gint32 *);
break;
case GIMP_PDB_INT16ARRAY:
(void) va_arg (args, gint16 *);
break;
case GIMP_PDB_INT8ARRAY:
(void) va_arg (args, gint8 *);
break;
case GIMP_PDB_FLOATARRAY:
(void) va_arg (args, gdouble *);
break;
case GIMP_PDB_STRINGARRAY:
(void) va_arg (args, gchar **);
break;
case GIMP_PDB_COLOR:
(void) va_arg (args, GimpRGB *);
break;
case GIMP_PDB_PARASITE:
(void) va_arg (args, GimpParasite *);
break;
case GIMP_PDB_REGION:
break;
case GIMP_PDB_END:
break;
}
n_params++;
param_type = va_arg (args, GimpPDBArgType);
}
va_end (args);
params = g_new0 (GimpParam, n_params);
va_start (args, n_return_vals);
for (i = 0; i < n_params; i++)
{
params[i].type = va_arg (args, GimpPDBArgType);
switch (params[i].type)
{
case GIMP_PDB_INT32:
params[i].data.d_int32 = (gint32) va_arg (args, gint);
break;
case GIMP_PDB_INT16:
params[i].data.d_int16 = (gint16) va_arg (args, gint);
break;
case GIMP_PDB_INT8:
params[i].data.d_int8 = (gint8) va_arg (args, gint);
break;
case GIMP_PDB_FLOAT:
params[i].data.d_float = (gdouble) va_arg (args, gdouble);
break;
case GIMP_PDB_STRING:
params[i].data.d_string = va_arg (args, gchar *);
break;
case GIMP_PDB_INT32ARRAY:
params[i].data.d_int32array = va_arg (args, gint32 *);
break;
case GIMP_PDB_INT16ARRAY:
params[i].data.d_int16array = va_arg (args, gint16 *);
break;
case GIMP_PDB_INT8ARRAY:
params[i].data.d_int8array = va_arg (args, gint8 *);
break;
case GIMP_PDB_FLOATARRAY:
params[i].data.d_floatarray = va_arg (args, gdouble *);
break;
case GIMP_PDB_STRINGARRAY:
params[i].data.d_stringarray = va_arg (args, gchar **);
break;
case GIMP_PDB_COLOR:
params[i].data.d_color = *va_arg (args, GimpRGB *);
break;
case GIMP_PDB_REGION:
break;
case GIMP_PDB_DISPLAY:
params[i].data.d_display = va_arg (args, gint32);
break;
case GIMP_PDB_IMAGE:
params[i].data.d_image = va_arg (args, gint32);
break;
case GIMP_PDB_LAYER:
params[i].data.d_layer = va_arg (args, gint32);
break;
case GIMP_PDB_CHANNEL:
params[i].data.d_channel = va_arg (args, gint32);
break;
case GIMP_PDB_DRAWABLE:
params[i].data.d_drawable = va_arg (args, gint32);
break;
case GIMP_PDB_SELECTION:
params[i].data.d_selection = va_arg (args, gint32);
break;
case GIMP_PDB_BOUNDARY:
params[i].data.d_boundary = va_arg (args, gint32);
break;
case GIMP_PDB_PATH:
params[i].data.d_path = va_arg (args, gint32);
break;
case GIMP_PDB_PARASITE:
{
GimpParasite *parasite = va_arg (args, GimpParasite *);
if (parasite == NULL)
{
params[i].data.d_parasite.name = NULL;
params[i].data.d_parasite.data = NULL;
}
else
{
params[i].data.d_parasite.name = parasite->name;
params[i].data.d_parasite.flags = parasite->flags;
params[i].data.d_parasite.size = parasite->size;
params[i].data.d_parasite.data = parasite->data;
}
}
break;
case GIMP_PDB_STATUS:
params[i].data.d_status = va_arg (args, gint32);
break;
case GIMP_PDB_END:
break;
}
}
va_end (args);
return_vals = gimp_run_procedure2 (name, n_return_vals,
n_params, params);
g_free (params);
return return_vals;
}
void
gimp_read_expect_msg (WireMessage *msg,
gint type)
{
while (TRUE)
{
if (! wire_read_msg (_readchannel, msg, NULL))
gimp_quit ();
if (msg->type != type)
{
if (msg->type == GP_TEMP_PROC_RUN || msg->type == GP_QUIT)
{
gimp_process_message (msg);
continue;
}
else
g_error ("unexpected message: %d", msg->type);
}
else
break;
}
}
/**
* gimp_run_procedure2:
* @name: the name of the procedure to run
* @n_return_vals: return location for the number of return values
* @n_params: the number of parameters the procedure takes.
* @params: the procedure's parameters array.
*
* This function calls a GIMP procedure and returns its return values.
*
* Return value: the procedure's return values.
**/
GimpParam *
gimp_run_procedure2 (const gchar *name,
gint *n_return_vals,
gint n_params,
const GimpParam *params)
{
GPProcRun proc_run;
GPProcReturn *proc_return;
WireMessage msg;
GimpParam *return_vals;
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (n_return_vals != NULL, NULL);
proc_run.name = (gchar *) name;
proc_run.nparams = n_params;
proc_run.params = (GPParam *) params;
if (! gp_proc_run_write (_writechannel, &proc_run, NULL))
gimp_quit ();
gimp_read_expect_msg (&msg, GP_PROC_RETURN);
proc_return = msg.data;
*n_return_vals = proc_return->nparams;
return_vals = (GimpParam *) proc_return->params;
switch (return_vals[0].data.d_status)
{
case GIMP_PDB_EXECUTION_ERROR:
/*g_warning ("an execution error occured while trying to run: \"%s\"", name);*/
break;
case GIMP_PDB_CALLING_ERROR:
g_warning ("a calling error occured while trying to run: \"%s\"", name);
break;
default:
break;
}
g_free (proc_return->name);
g_free (proc_return);
return return_vals;
}
/**
* gimp_destroy_params:
* @params: the #GimpParam array to destroy
* @n_params: the number of elements in the array
*
* Destroys a #GimpParam array as returned by gimp_run_procedure()
**/
void
gimp_destroy_params (GimpParam *params,
gint n_params)
{
extern void _gp_params_destroy (GPParam *params, gint n_params);
_gp_params_destroy ((GPParam*) params, n_params);
}
/**
* gimp_destroy_paramdefs:
* @paramdefs: the #GimpParamDef array to destroy
* @n_params: the number of elements in the array
*
* Destroys a #GimpParamDef array as returned by gimp_query_procedure()
**/
void
gimp_destroy_paramdefs (GimpParamDef *paramdefs,
gint n_params)
{
while (n_params--)
{
g_free (paramdefs[n_params].name);
g_free (paramdefs[n_params].description);
}
g_free (paramdefs);
}
/**
* gimp_tile_width:
*
* Returns the tile_width the GIMP is using. This is a constant value
* given at Plug-In config time.
*
* Return value: the tile_width
**/
guint
gimp_tile_width (void)
{
return _tile_width;
}
/**
* gimp_tile_height:
*
* Returns the tile_height the GIMP is using. This is a constant value
* given at Plug-In config time.
*
* Return value: the tile_height
**/
guint
gimp_tile_height (void)
{
return _tile_height;
}
/**
* gimp_shm_ID:
*
* Returns the shared memory ID used for passing tile data between the GIMP
* core and the Plug-In. This is a constant value
* given at Plug-In config time.
*
* Return value: the shared memory ID
**/
gint
gimp_shm_ID (void)
{
return _shm_ID;
}
/**
* gimp_shm_addr:
*
* Returns the address of the shared memory segment used for passing
* tile data between the GIMP core and the Plug-In. This is a constant
* value given at Plug-In config time.
*
* Return value: the shared memory address
**/
guchar *
gimp_shm_addr (void)
{
return _shm_addr;
}
/**
* gimp_gamma:
*
* Returns the global gamma value the GIMP and all its Plug-Ins should
* use. This is a constant value given at Plug-In config time.
*
* NOTE: this feature is unimplemented.
*
* Return value: the gamma value
**/
gdouble
gimp_gamma (void)
{
return _gamma_val;
}
/**
* gimp_install_cmap:
*
* Returns whether or not the Plug-In should allocate an own colormap
* when running on an 8 bit display. This is a constant value given at
* Plug-In config time.
*
* See also: gimp_min_colors()
*
* Return value: the install_cmap boolean
**/
gboolean
gimp_install_cmap (void)
{
return _install_cmap;
}
/**
* gimp_min_colors:
*
* Returns the minimum number of colors to use when allocating an own
* colormap on 8 bit displays. This is a constant value given at
* Plug-In config time.
*
* See also: gimp_install_cmap()
*
* Return value: the minimum number of colors to allocate
**/
gint
gimp_min_colors (void)
{
return _min_colors;
}
/**
* gimp_show_tool_tips:
*
* Returns whether or not the Plug-In should show tooltips. This is a
* constant value given at Plug-In config time.
*
* Return value: the show_tool_tips boolean
**/
gboolean
gimp_show_tool_tips (void)
{
return _show_tool_tips;
}
/**
* gimp_default_display:
*
* Returns the default display ID. This corresponds to the display the
* running procedure's menu entry was invoked from. This is a
* constant value given at Plug-In config time.
*
* Return value: the default display ID
**/
gint32
gimp_default_display (void)
{
return _gdisp_ID;
}
/**
* gimp_wm_class:
*
* Returns the window manager class to be used for plug-in windows.
* This is a constant value given at Plug-In config time.
*
* Return value: the window manager class
**/
const gchar *
gimp_wm_class (void)
{
return (const gchar *) _wm_class;
}
/**
* gimp_display_name:
*
* Returns the display to be used for plug-in windows.
* This is a constant value given at Plug-In config time.
*
* Return value: the display name
**/
const gchar *
gimp_display_name (void)
{
return (const gchar *) _display_name;
}
/**
* gimp_monitor_number:
*
* Returns the monitor number to be used for plug-in windows.
* This is a constant value given at Plug-In config time.
*
* Return value: the monitor number
**/
gint
gimp_monitor_number (void)
{
return _monitor_number;
}
/**
* gimp_get_progname:
*
* Returns the Plug-In's executable name.
*
* Return value: the executable name
**/
const gchar *
gimp_get_progname (void)
{
return progname;
}
/**
* gimp_extension_ack:
*
* Notify the main GIMP application that the extension has been properly
* initialized and is ready to run.
*
* This function <emphasis>must</emphasis> be called from every
* procedure that was registered as #GIMP_EXTENSION.
*
* Subsequently, extensions can process temporary procedure run
* requests using either gimp_extension_enable() or
* gimp_extension_process().
*
* See also: gimp_install_procedure(), gimp_install_temp_proc()
**/
void
gimp_extension_ack (void)
{
if (! gp_extension_ack_write (_writechannel, NULL))
gimp_quit ();
}
/**
* gimp_extension_enable:
*
* Enables asnychronous processing of messages from the main GIMP
* application.
*
* Normally, a plug-in is not called by the GIMP except for the call
* to the procedure it implements. All subsequent communication is
* triggered by the plug-in and all messages sent from the GIMP to the
* plug-in are just answers to requests the plug-in made.
*
* If the plug-in however registered temporary procedures using
* gimp_install_temp_proc(), it needs to be able to receive requests
* to execute them. Usually this will be done by running
* gimp_extension_process() in an endless loop.
*
* If the plug-in cannot use gimp_extension_process(), i.e. if it has
* a GUI and is hanging around in a #GMainLoop, it must call
* gimp_extension_enable().
*
* Note that the plug-in does not need to be a #GIMP_EXTENSION to
* register temporary procedures.
*
* See also: gimp_install_procedure(), gimp_install_temp_proc()
**/
void
gimp_extension_enable (void)
{
static gboolean callback_added = FALSE;
if (! callback_added)
{
g_io_add_watch (_readchannel, G_IO_IN | G_IO_PRI, gimp_extension_read,
NULL);
callback_added = TRUE;
}
}
/**
* gimp_extension_process:
* @timeout: The timeout (in ms) to use for the select() call.
*
* Processes one message sent by the GIMP and returns.
*
* Call this function in an endless loop after calling
* gimp_extension_ack() to process requests for running temporary
* procedures.
*
* See gimp_extension_enable() for an asynchronous way of doing the
* same if running an endless loop is not an option.
*
* See also: gimp_install_procedure(), gimp_install_temp_proc()
**/
void
gimp_extension_process (guint timeout)
{
#ifndef G_OS_WIN32
fd_set readfds;
gint select_val;
struct timeval tv;
struct timeval *tvp;
if (timeout)
{
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
tvp = &tv;
}
else
tvp = NULL;
FD_ZERO (&readfds);
FD_SET (g_io_channel_unix_get_fd (_readchannel), &readfds);
if ((select_val = select (FD_SETSIZE, &readfds, NULL, NULL, tvp)) > 0)
{
gimp_single_message ();
}
else if (select_val == -1)
{
perror ("gimp_extension_process");
gimp_quit ();
}
#else
/* Zero means infinite wait for us, but g_poll and
* g_io_channel_win32_poll use -1 to indicate
* infinite wait.
*/
GPollFD pollfd;
if (timeout == 0)
timeout = -1;
g_io_channel_win32_make_pollfd (_readchannel, G_IO_IN, &pollfd);
if (g_io_channel_win32_poll (&pollfd, 1, timeout) == 1)
gimp_single_message ();
#endif
}
/**
* gimp_attach_new_parasite:
* @name: the name of the #GimpParasite to create and attach.
* @flags: the flags set on the #GimpParasite.
* @size: the size of the parasite data in bytes.
* @data: a pointer to the data attached with the #GimpParasite.
*
* Convenience function that creates a parasite and attaches it
* to the GIMP.
*
* See Also: gimp_parasite_attach()
*/
void
gimp_attach_new_parasite (const gchar *name,
gint flags,
gint size,
gconstpointer data)
{
GimpParasite *parasite = gimp_parasite_new (name, flags, size, data);
gimp_parasite_attach (parasite);
gimp_parasite_free (parasite);
}
/* private functions */
static void
gimp_close (void)
{
if (gimp_debug_flags & GIMP_DEBUG_QUIT)
gimp_debug_stop ();
if (PLUG_IN_INFO.quit_proc)
(* PLUG_IN_INFO.quit_proc) ();
#if defined(USE_SYSV_SHM)
if ((_shm_ID != -1) && _shm_addr)
shmdt ((char*) _shm_addr);
#elif defined(USE_WIN32_SHM)
if (shm_handle)
CloseHandle (shm_handle);
#elif defined(USE_POSIX_SHM)
if ((_shm_ID != -1) && (_shm_addr != MAP_FAILED))
munmap (_shm_addr, TILE_MAP_SIZE);
#endif
gp_quit_write (_writechannel, NULL);
}
static void
gimp_debug_stop (void)
{
#ifndef G_OS_WIN32
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Waiting for debugger...");
raise (SIGSTOP);
#else
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Debugging not implemented on Win32");
#endif
}
static void
gimp_message_func (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer data)
{
gimp_message ((gchar *) message);
}
#ifndef G_OS_WIN32
static void
gimp_plugin_sigfatal_handler (gint sig_num)
{
switch (sig_num)
{
case SIGHUP:
case SIGINT:
case SIGQUIT:
case SIGABRT:
case SIGTERM:
g_printerr ("%s terminated: %s\n", progname, g_strsignal (sig_num));
break;
case SIGBUS:
case SIGSEGV:
case SIGFPE:
case SIGPIPE:
default:
g_printerr ("%s: fatal error: %s\n", progname, g_strsignal (sig_num));
switch (stack_trace_mode)
{
case GIMP_STACK_TRACE_NEVER:
break;
case GIMP_STACK_TRACE_QUERY:
{
sigset_t sigset;
sigemptyset (&sigset);
sigprocmask (SIG_SETMASK, &sigset, NULL);
g_on_error_query (progname);
}
break;
case GIMP_STACK_TRACE_ALWAYS:
{
sigset_t sigset;
sigemptyset (&sigset);
sigprocmask (SIG_SETMASK, &sigset, NULL);
g_on_error_stack_trace (progname);
}
break;
}
break;
}
gimp_quit ();
}
#endif
static gboolean
gimp_plugin_io_error_handler (GIOChannel *channel,
GIOCondition cond,
gpointer data)
{
g_printerr ("%s: fatal error: GIMP crashed\n", progname);
gimp_quit ();
/* never reached */
return TRUE;
}
static gboolean
gimp_write (GIOChannel *channel,
guint8 *buf,
gulong count,
gpointer user_data)
{
gulong bytes;
while (count > 0)
{
if ((write_buffer_index + count) >= WRITE_BUFFER_SIZE)
{
bytes = WRITE_BUFFER_SIZE - write_buffer_index;
memcpy (&write_buffer[write_buffer_index], buf, bytes);
write_buffer_index += bytes;
if (! wire_flush (channel, NULL))
return FALSE;
}
else
{
bytes = count;
memcpy (&write_buffer[write_buffer_index], buf, bytes);
write_buffer_index += bytes;
}
buf += bytes;
count -= bytes;
}
return TRUE;
}
static gboolean
gimp_flush (GIOChannel *channel,
gpointer user_data)
{
GIOStatus status;
GError *error = NULL;
gsize count;
gsize bytes;
if (write_buffer_index > 0)
{
count = 0;
while (count != write_buffer_index)
{
do
{
bytes = 0;
status = g_io_channel_write_chars (channel,
&write_buffer[count],
(write_buffer_index - count),
&bytes,
&error);
}
while (status == G_IO_STATUS_AGAIN);
if (status != G_IO_STATUS_NORMAL)
{
if (error)
{
g_warning ("%s: gimp_flush(): error: %s",
g_get_prgname (), error->message);
g_error_free (error);
}
else
{
g_warning ("%s: gimp_flush(): error", g_get_prgname ());
}
return FALSE;
}
count += bytes;
}
write_buffer_index = 0;
}
return TRUE;
}
static void
gimp_loop (void)
{
WireMessage msg;
while (TRUE)
{
if (! wire_read_msg (_readchannel, &msg, NULL))
{
gimp_close ();
return;
}
switch (msg.type)
{
case GP_QUIT:
gimp_close ();
return;
case GP_CONFIG:
gimp_config (msg.data);
break;
case GP_TILE_REQ:
case GP_TILE_ACK:
case GP_TILE_DATA:
g_warning ("unexpected tile message received (should not happen)");
break;
case GP_PROC_RUN:
gimp_proc_run (msg.data);
gimp_close ();
return;
case GP_PROC_RETURN:
g_warning ("unexpected proc return message received (should not happen)");
break;
case GP_TEMP_PROC_RUN:
g_warning ("unexpected temp proc run message received (should not happen");
break;
case GP_TEMP_PROC_RETURN:
g_warning ("unexpected temp proc return message received (should not happen");
break;
case GP_PROC_INSTALL:
g_warning ("unexpected proc install message received (should not happen)");
break;
case GP_HAS_INIT:
g_warning ("unexpected has init message received (should not happen)");
break;
}
wire_destroy (&msg);
}
}
static void
gimp_config (GPConfig *config)
{
if (config->version < GIMP_PROTOCOL_VERSION)
{
g_message ("Could not execute plug-in \"%s\"\n(%s)\n"
"because the GIMP is using an older version of the "
"plug-in protocol.",
gimp_filename_to_utf8 (g_get_prgname ()),
gimp_filename_to_utf8 (progname));
gimp_quit ();
}
else if (config->version > GIMP_PROTOCOL_VERSION)
{
g_message ("Could not execute plug-in \"%s\"\n(%s)\n"
"because it uses an obsolete version of the "
"plug-in protocol.",
gimp_filename_to_utf8 (g_get_prgname ()),
gimp_filename_to_utf8 (progname));
gimp_quit ();
}
_tile_width = config->tile_width;
_tile_height = config->tile_height;
_shm_ID = config->shm_ID;
_gamma_val = config->gamma;
_install_cmap = config->install_cmap;
_show_tool_tips = config->show_tool_tips;
_min_colors = config->min_colors;
_gdisp_ID = config->gdisp_ID;
_wm_class = g_strdup (config->wm_class);
_display_name = g_strdup (config->display_name);
_monitor_number = config->monitor_number;
if (config->app_name)
g_set_application_name (config->app_name);
if (_shm_ID != -1)
{
#if defined(USE_SYSV_SHM)
/* Use SysV shared memory mechanisms for transferring tile data. */
_shm_addr = (guchar *) shmat (_shm_ID, 0, 0);
if (_shm_addr == (guchar *) -1)
{
g_error ("shmat() failed: %s\n" ERRMSG_SHM_FAILED,
g_strerror (errno));
}
#elif defined(USE_WIN32_SHM)
/* Use Win32 shared memory mechanisms for transferring tile data. */
gchar fileMapName[128];
/* From the id, derive the file map name */
g_snprintf (fileMapName, sizeof (fileMapName), "GIMP%d.SHM", _shm_ID);
/* Open the file mapping */
shm_handle = OpenFileMapping (FILE_MAP_ALL_ACCESS,
0, fileMapName);
if (shm_handle)
{
/* Map the shared memory into our address space for use */
_shm_addr = (guchar *) MapViewOfFile (shm_handle,
FILE_MAP_ALL_ACCESS,
0, 0, TILE_MAP_SIZE);
/* Verify that we mapped our view */
if (!_shm_addr)
{
g_error ("MapViewOfFile error: %d... " ERRMSG_SHM_FAILED,
GetLastError ());
}
}
else
{
g_error ("OpenFileMapping error: %d... " ERRMSG_SHM_FAILED,
GetLastError ());
}
#elif defined(USE_POSIX_SHM)
/* Use POSIX shared memory mechanisms for transferring tile data. */
gchar map_file[32];
gint shm_fd;
/* From the id, derive the file map name */
g_snprintf (map_file, sizeof (map_file), "/gimp-shm-%d", _shm_ID);
/* Open the file mapping */
shm_fd = shm_open (map_file, O_RDWR, 0600);
if (shm_fd != -1)
{
/* Map the shared memory into our address space for use */
_shm_addr = (guchar *) mmap (NULL, TILE_MAP_SIZE,
PROT_READ | PROT_WRITE, MAP_SHARED,
shm_fd, 0);
/* Verify that we mapped our view */
if (_shm_addr == MAP_FAILED)
{
g_error ("mmap() failed: %s\n" ERRMSG_SHM_FAILED,
g_strerror (errno));
}
close (shm_fd);
}
else
{
g_error ("shm_open() failed: %s\n" ERRMSG_SHM_FAILED,
g_strerror (errno));
}
#endif
}
}
static void
gimp_proc_run (GPProcRun *proc_run)
{
if (PLUG_IN_INFO.run_proc)
{
GPProcReturn proc_return;
GimpParam *return_vals;
gint n_return_vals;
(* PLUG_IN_INFO.run_proc) (proc_run->name,
proc_run->nparams,
(GimpParam*) proc_run->params,
&n_return_vals,
&return_vals);
proc_return.name = proc_run->name;
proc_return.nparams = n_return_vals;
proc_return.params = (GPParam *) return_vals;
if (! gp_proc_return_write (_writechannel, &proc_return, NULL))
gimp_quit ();
}
}
#define ENABLE_TEMP_RETURN 1
static void
gimp_temp_proc_run (GPProcRun *proc_run)
{
GimpRunProc run_proc;
run_proc = (GimpRunProc) g_hash_table_lookup (temp_proc_ht,
(gpointer) proc_run->name);
if (run_proc)
{
#ifdef ENABLE_TEMP_RETURN
GPProcReturn proc_return;
#endif
GimpParam *return_vals;
gint n_return_vals;
(* run_proc) (proc_run->name,
proc_run->nparams,
(GimpParam*) proc_run->params,
&n_return_vals,
&return_vals);
#ifdef ENABLE_TEMP_RETURN
proc_return.name = proc_run->name;
proc_return.nparams = n_return_vals;
proc_return.params = (GPParam *) return_vals;
if (! gp_temp_proc_return_write (_writechannel, &proc_return, NULL))
gimp_quit ();
#endif
}
}
static void
gimp_process_message (WireMessage *msg)
{
switch (msg->type)
{
case GP_QUIT:
gimp_quit ();
break;
case GP_CONFIG:
gimp_config (msg->data);
break;
case GP_TILE_REQ:
case GP_TILE_ACK:
case GP_TILE_DATA:
g_warning ("unexpected tile message received (should not happen)");
break;
case GP_PROC_RUN:
g_warning ("unexpected proc run message received (should not happen)");
break;
case GP_PROC_RETURN:
g_warning ("unexpected proc return message received (should not happen)");
break;
case GP_TEMP_PROC_RUN:
gimp_temp_proc_run (msg->data);
break;
case GP_TEMP_PROC_RETURN:
g_warning ("unexpected temp proc return message received (should not happen)");
break;
case GP_PROC_INSTALL:
g_warning ("unexpected proc install message received (should not happen)");
break;
case GP_HAS_INIT:
g_warning ("unexpected has init message received (should not happen)");
break;
}
}
static void
gimp_single_message (void)
{
WireMessage msg;
/* Run a temp function */
if (! wire_read_msg (_readchannel, &msg, NULL))
gimp_quit ();
gimp_process_message (&msg);
wire_destroy (&msg);
}
static gboolean
gimp_extension_read (GIOChannel *channel,
GIOCondition condition,
gpointer data)
{
gimp_single_message ();
return TRUE;
}
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