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gimp/libgimp/gimp.c
Michael Natterer 8005eea835 Remove the "GIMP" from all "Since: GIMP 2.x" API doc comments 
because it confuses gtk-doc and breaks some links. Also change the
"Index of new symbols in GIMP 2.x" sections to be what seems to be the
modern standard (looked at the GLib and GTK+ docs), and update some
other stuff.
2015-05-31 21:18:09 +02:00

2253 lines
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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 3 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, see
* <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#define _GNU_SOURCE /* for the sigaction stuff */
#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 <gtk/gtk.h> /* need GDK_WINDOWING_FOO defines */
#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 */
#ifdef GDK_WINDOWING_QUARTZ
#include <Cocoa/Cocoa.h>
#endif
#if defined(G_OS_WIN32) || defined(G_WITH_CYGWIN)
# define STRICT
# define _WIN32_WINNT 0x0601
# include <windows.h>
# include <tlhelp32.h>
# undef RGB
# define USE_WIN32_SHM 1
#endif
#include <locale.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpbase/gimpbase-private.h"
#include "libgimpbase/gimpprotocol.h"
#include "libgimpbase/gimpwire.h"
#include "gimp.h"
#include "gimpunitcache.h"
#include "libgimp-intl.h"
/**
* SECTION: gimp
* @title: Gimp
* @short_description: Main functions needed for building a GIMP plug-in.
* This header includes all other GIMP Library headers.
*
* Main functions needed for building a GIMP plug-in. This header
* includes all other GIMP Library headers.
**/
#define TILE_MAP_SIZE (_tile_width * _tile_height * 32)
#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 (GimpWireMessage *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,
const 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 (GimpWireMessage *msg);
static void gimp_single_message (void);
static gboolean gimp_extension_read (GIOChannel *channel,
GIOCondition condition,
gpointer data);
static void gimp_set_pdb_error (const GimpParam *return_vals,
gint n_return_vals);
static GIOChannel *_readchannel = NULL;
GIOChannel *_writechannel = NULL;
#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 const gdouble _gamma_val = 2.2;
static gboolean _install_cmap = FALSE;
static gboolean _show_tool_tips = TRUE;
static gboolean _show_help_button = TRUE;
static GimpCheckSize _check_size = GIMP_CHECK_SIZE_MEDIUM_CHECKS;
static GimpCheckType _check_type = GIMP_CHECK_TYPE_GRAY_CHECKS;
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 guint32 _timestamp = 0;
static const gchar *progname = NULL;
static gchar write_buffer[WRITE_BUFFER_SIZE];
static gulong 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;
static GimpPDBStatusType pdb_error_status = GIMP_PDB_SUCCESS;
static gchar *pdb_error_message = NULL;
/**
* 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".
*
* Returns: an exit status as defined by the C library,
* on success %EXIT_SUCCESS.
**/
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;
/* Reduce risks */
{
typedef BOOL (WINAPI *t_SetDllDirectoryA) (LPCSTR lpPathName);
t_SetDllDirectoryA p_SetDllDirectoryA;
p_SetDllDirectoryA = GetProcAddress (GetModuleHandle ("kernel32.dll"),
"SetDllDirectoryA");
if (p_SetDllDirectoryA)
(*p_SetDllDirectoryA) ("");
}
/* On Windows, set DLL search path to $INSTALLDIR/bin so that GEGL
file operations can find their respective file library DLLs (such
as jasper, etc.) without needing to set external PATH. */
{
const gchar *install_dir;
gchar *bin_dir;
LPWSTR w_bin_dir;
int n;
w_bin_dir = NULL;
install_dir = gimp_installation_directory ();
bin_dir = g_build_filename (install_dir, "bin", NULL);
n = MultiByteToWideChar (CP_UTF8, MB_ERR_INVALID_CHARS,
bin_dir, -1, NULL, 0);
if (n == 0)
goto out;
w_bin_dir = g_malloc_n (n + 1, sizeof (wchar_t));
n = MultiByteToWideChar (CP_UTF8, MB_ERR_INVALID_CHARS,
bin_dir, -1,
w_bin_dir, (n + 1) * sizeof (wchar_t));
if (n == 0)
goto out;
SetDllDirectoryW (w_bin_dir);
out:
if (w_bin_dir)
g_free (w_bin_dir);
g_free (bin_dir);
}
#ifndef _WIN64
{
typedef BOOL (WINAPI *t_SetProcessDEPPolicy) (DWORD dwFlags);
t_SetProcessDEPPolicy p_SetProcessDEPPolicy;
p_SetProcessDEPPolicy = GetProcAddress (GetModuleHandle ("kernel32.dll"),
"SetProcessDEPPolicy");
if (p_SetProcessDEPPolicy)
(*p_SetProcessDEPPolicy) (PROCESS_DEP_ENABLE|PROCESS_DEP_DISABLE_ATL_THUNK_EMULATION);
}
#endif
/* 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 GIMP to be used\n",
argv[0]);
return 1;
}
gimp_env_init (TRUE);
progname = argv[0];
basename = g_path_get_basename (progname);
g_set_prgname (basename);
env_string = g_getenv ("GIMP_PLUGIN_DEBUG");
if (env_string)
{
const gchar *debug_messages;
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;
}
/* make debug output visible by setting G_MESSAGES_DEBUG */
debug_messages = g_getenv ("G_MESSAGES_DEBUG");
if (debug_messages)
{
gchar *tmp = g_strconcat (debug_messages, ",LibGimp", NULL);
g_setenv ("G_MESSAGES_DEBUG", tmp, TRUE);
g_free (tmp);
}
else
{
g_setenv ("G_MESSAGES_DEBUG", "LibGimp", TRUE);
}
}
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
#ifdef G_OS_WIN32
_readchannel = g_io_channel_win32_new_fd (atoi (argv[2]));
_writechannel = g_io_channel_win32_new_fd (atoi (argv[3]));
#else
_readchannel = g_io_channel_unix_new (atoi (argv[2]));
_writechannel = g_io_channel_unix_new (atoi (argv[3]));
#endif
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 ();
gimp_wire_set_writer (gimp_write);
gimp_wire_set_flusher (gimp_flush);
gimp_enums_init ();
/* 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 */
{
const gchar * const log_domains[] =
{
"LibGimp",
"LibGimpBase",
"LibGimpColor",
"LibGimpConfig",
"LibGimpMath",
"LibGimpModule",
"LibGimpThumb",
"LibGimpWidgets"
};
gint i;
for (i = 0; i < G_N_ELEMENTS (log_domains); i++)
g_log_set_handler (log_domains[i],
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_label: the label to use for the procedure's menu entry,
* 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_label defines the label that should be used for the
* procedure's menu entry. The position where to register in the menu
* hierarchy is chosen using gimp_plugin_menu_register(). This
* function also still accepts the old (pre-2.2) way of registering a
* menu entry and takes a string in the form
* "&lt;Domain&gt;/Path/To/My/Menu"
* (e.g. "&lt;Image&gt;/Filters/Render/Useless").
*
* It is possible to register a procedure only for keyboard-shortcut
* activation by passing a @menu_label to gimp_install_procedure() but
* not registering any menu path with gimp_plugin_menu_register(). In
* this case, the given @menu_label will only be used as the
* procedure's user-visible name in the keyboard shortcut editor.
*
* @image_types is a comma separated list of image types, or actually
* drawable types, that this procedure can deal with. Wildcards are
* possible here, so you could say "RGB*" instead of "RGB, RGBA" or
* "*" for all image types. If the procedure doesn't need an image to
* run, use the empty string.
*
* @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 the 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_label,
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_label;
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_label: the procedure's menu label, 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
* explicitly 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_label,
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_label,
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
* @...: 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(). Please look there for further
* information.
*
* Return value: the procedure's return values unless there was an error,
* in which case the zero-th return value will be the error status, and
* the first return value will be a string detailing the error.
**/
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_ITEM:
case GIMP_PDB_LAYER:
case GIMP_PDB_CHANNEL:
case GIMP_PDB_DRAWABLE:
case GIMP_PDB_SELECTION:
case GIMP_PDB_VECTORS:
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:
case GIMP_PDB_COLORARRAY:
(void) va_arg (args, GimpRGB *);
break;
case GIMP_PDB_PARASITE:
(void) va_arg (args, GimpParasite *);
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 = (guint8) 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, guint8 *);
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_ITEM:
params[i].data.d_item = va_arg (args, gint32);
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_COLORARRAY:
params[i].data.d_colorarray = va_arg (args, GimpRGB *);
break;
case GIMP_PDB_VECTORS:
params[i].data.d_vectors = 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 (GimpWireMessage *msg,
gint type)
{
while (TRUE)
{
if (! gimp_wire_read_msg (_readchannel, msg, NULL))
gimp_quit ();
if (msg->type == type)
return; /* up to the caller to call wire_destroy() */
if (msg->type == GP_TEMP_PROC_RUN || msg->type == GP_QUIT)
{
gimp_process_message (msg);
}
else
{
g_error ("unexpected message: %d", msg->type);
}
gimp_wire_destroy (msg);
}
}
/**
* 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.
* To get more information about the available procedures and the
* parameters they expect, please have a look at the Procedure Browser
* as found in the Xtns menu in GIMP's toolbox.
*
* As soon as you don't need the return values any longer, you should
* free them using gimp_destroy_params().
*
* Return value: the procedure's return values unless there was an error,
* in which case the zero-th return value will be the error status, and
* if there are two values returned, the other return value will be a
* string detailing the error.
**/
GimpParam *
gimp_run_procedure2 (const gchar *name,
gint *n_return_vals,
gint n_params,
const GimpParam *params)
{
GPProcRun proc_run;
GPProcReturn *proc_return;
GimpWireMessage 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;
proc_return->nparams = 0;
proc_return->params = NULL;
gimp_wire_destroy (&msg);
gimp_set_pdb_error (return_vals, *n_return_vals);
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() or
* gimp_run_procedure2().
**/
void
gimp_destroy_params (GimpParam *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_procedural_db_proc_info().
**/
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_get_pdb_error:
*
* Retrieves the error message from the last procedure call.
*
* If a procedure call fails, then it might pass an error message with
* the return values. Plug-ins that are using the libgimp C wrappers
* don't access the procedure return values directly. Thus ligimp
* stores the error message and makes it available with this
* function. The next procedure call unsets the error message again.
*
* The returned string is owned by libgimp and must not be freed or
* modified.
*
* Return value: the error message
*
* Since: 2.6
**/
const gchar *
gimp_get_pdb_error (void)
{
if (pdb_error_message && strlen (pdb_error_message))
return pdb_error_message;
switch (pdb_error_status)
{
case GIMP_PDB_SUCCESS:
/* procedure executed successfully */
return _("success");
case GIMP_PDB_EXECUTION_ERROR:
/* procedure execution failed */
return _("execution error");
case GIMP_PDB_CALLING_ERROR:
/* procedure called incorrectly */
return _("calling error");
case GIMP_PDB_CANCEL:
/* procedure execution cancelled */
return _("cancelled");
default:
return "invalid return status";
}
}
/**
* gimp_tile_width:
*
* Returns the tile width GIMP is using.
*
* This is a constant value given at plug-in configuration time.
*
* Return value: the tile_width
**/
guint
gimp_tile_width (void)
{
return _tile_width;
}
/**
* gimp_tile_height:
*
* Returns the tile height GIMP is using.
*
* This is a constant value given at plug-in configuration 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 configuration 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 configuration time.
*
* Return value: the shared memory address
**/
guchar *
gimp_shm_addr (void)
{
return _shm_addr;
}
/**
* gimp_gamma:
*
* Returns the global gamma value GIMP and all its plug-ins should
* use.
*
* This is a constant value given at plug-in configuration time.
*
* NOTE: This function will always return 2.2, the gamma value for
* sRGB. There's currently no way to change this and all operations
* should assume that pixel data is in the sRGB colorspace.
*
* 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. See also: gimp_min_colors().
*
* This is a constant value given at plug-in configuration time.
*
* @Deprecated: 2.8
*
* 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 configuration time.
*
* See also: gimp_install_cmap()
*
* @Deprecated: 2.8
*
* 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 tool-tips.
*
* This is a constant value given at plug-in configuration time.
*
* Return value: the show_tool_tips boolean
**/
gboolean
gimp_show_tool_tips (void)
{
return _show_tool_tips;
}
/**
* gimp_show_help_button:
*
* Returns whether or not GimpDialog should automatically add a help
* button if help_func and help_id are given.
*
* This is a constant value given at plug-in configuration time.
*
* Return value: the show_help_button boolean
*
* Since: 2.2
**/
gboolean
gimp_show_help_button (void)
{
return _show_help_button;
}
/**
* gimp_check_size:
*
* Returns the size of the checkerboard to be used in previews.
*
* This is a constant value given at plug-in configuration time.
*
* Return value: the check_size value
*
* Since: 2.2
**/
GimpCheckSize
gimp_check_size (void)
{
return _check_size;
}
/**
* gimp_check_type:
*
* Returns the type of the checkerboard to be used in previews.
*
* This is a constant value given at plug-in configuration time.
*
* Return value: the check_type value
*
* Since: 2.2
**/
GimpCheckType
gimp_check_type (void)
{
return _check_type;
}
/**
* 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 configuration 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 configuration time.
*
* Return value: the window manager class
**/
const gchar *
gimp_wm_class (void)
{
return _wm_class;
}
/**
* gimp_display_name:
*
* Returns the display to be used for plug-in windows.
*
* This is a constant value given at plug-in configuration time.
* Will return #NULL if GIMP has been started with no GUI, either
* via "--no-interface" flag, or a console build.
*
* Return value: the display name
**/
const gchar *
gimp_display_name (void)
{
return _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 configuration time.
*
* Return value: the monitor number
**/
gint
gimp_monitor_number (void)
{
return _monitor_number;
}
/**
* gimp_user_time:
*
* Returns the timestamp of the user interaction that should be set on
* the plug-in window. This is handled transparently, plug-in authors
* do not have to care about it.
*
* This is a constant value given at plug-in configuration time.
*
* Return value: timestamp for plug-in window
*
* Since: 2.6
**/
guint32
gimp_user_time (void)
{
return _timestamp;
}
/**
* 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 asynchronous processing of messages from the main GIMP
* application.
*
* Normally, a plug-in is not called by GIMP except for the call to
* the procedure it implements. All subsequent communication is
* triggered by the plug-in and all messages sent from 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 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
gint select_val;
do
{
fd_set readfds;
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 && errno != EINTR)
{
perror ("gimp_extension_process");
gimp_quit ();
}
}
while (select_val == -1 && errno == EINTR);
#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_parasite_find:
* @name: The name of the parasite to find.
*
* Deprecated: Use gimp_get_parasite() instead.
*
* Returns: The found parasite.
**/
GimpParasite *
gimp_parasite_find (const gchar *name)
{
return gimp_get_parasite (name);
}
/**
* gimp_parasite_attach:
* @parasite: The parasite to attach.
*
* Deprecated: Use gimp_attach_parasite() instead.
*
* Returns: TRUE on success.
**/
gboolean
gimp_parasite_attach (const GimpParasite *parasite)
{
return gimp_attach_parasite (parasite);
}
/**
* gimp_parasite_detach:
* @name: The name of the parasite to detach.
*
* Deprecated: Use gimp_detach_parasite() instead.
*
* Returns: TRUE on success.
**/
gboolean
gimp_parasite_detach (const gchar *name)
{
return gimp_detach_parasite (name);
}
/**
* gimp_parasite_list:
* @num_parasites: The number of attached parasites.
* @parasites: The names of currently attached parasites.
*
* Deprecated: Use gimp_get_parasite_list() instead.
*
* Returns: TRUE on success.
**/
gboolean
gimp_parasite_list (gint *num_parasites,
gchar ***parasites)
{
*parasites = gimp_get_parasite_list (num_parasites);
return *parasites != NULL;
}
/**
* 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 GIMP.
*
* Deprecated: Use gimp_attach_parasite() instead.
*
* Return value: TRUE on successful creation and attachment of
* the new parasite.
*
* See Also: gimp_attach_parasite()
*/
gboolean
gimp_attach_new_parasite (const gchar *name,
gint flags,
gint size,
gconstpointer data)
{
GimpParasite *parasite = gimp_parasite_new (name, flags, size, data);
gboolean success;
success = gimp_attach_parasite (parasite);
gimp_parasite_free (parasite);
return success;
}
/* 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
HANDLE hThreadSnap = NULL;
THREADENTRY32 te32 = { 0 };
pid_t opid = getpid ();
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "Debugging (restart externally): %d",
opid);
hThreadSnap = CreateToolhelp32Snapshot (TH32CS_SNAPTHREAD, 0);
if (hThreadSnap == INVALID_HANDLE_VALUE)
{
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,
"error getting threadsnap - debugging impossible");
return;
}
te32.dwSize = sizeof (THREADENTRY32);
if (Thread32First (hThreadSnap, &te32))
{
do
{
if (te32.th32OwnerProcessID == opid)
{
HANDLE hThread = OpenThread (THREAD_SUSPEND_RESUME, FALSE,
te32.th32ThreadID);
SuspendThread (hThread);
CloseHandle (hThread);
}
}
while (Thread32Next (hThreadSnap, &te32));
}
else
{
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "error getting threads");
}
CloseHandle (hThreadSnap);
#endif
}
static void
gimp_message_func (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer data)
{
gimp_message (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,
const 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 (! gimp_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)
{
GimpWireMessage msg;
while (TRUE)
{
if (! gimp_wire_read_msg (_readchannel, &msg, NULL))
{
gimp_close ();
return;
}
switch (msg.type)
{
case GP_QUIT:
gimp_wire_destroy (&msg);
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_wire_destroy (&msg);
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;
}
gimp_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 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;
_check_size = config->check_size;
_check_type = config->check_type;
_install_cmap = config->install_cmap ? TRUE : FALSE;
_show_tool_tips = config->show_tooltips ? TRUE : FALSE;
_show_help_button = config->show_help_button ? TRUE : FALSE;
_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;
_timestamp = config->timestamp;
if (config->app_name)
g_set_application_name (config->app_name);
gimp_cpu_accel_set_use (config->use_cpu_accel);
g_object_set (gegl_config (),
"use-opencl", config->use_opencl,
"application-license", "GPL3",
NULL);
if (_shm_ID != -1)
{
#if defined(USE_SYSV_SHM)
/* Use SysV shared memory mechanisms for transferring tile data. */
_shm_addr = (guchar *) shmat (_shm_ID, NULL, 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 ();
}
}
static void
gimp_temp_proc_run (GPProcRun *proc_run)
{
GimpRunProc run_proc = g_hash_table_lookup (temp_proc_ht, proc_run->name);
if (run_proc)
{
GPProcReturn proc_return;
GimpParam *return_vals;
gint n_return_vals;
#ifdef GDK_WINDOWING_QUARTZ
if (proc_run->params &&
proc_run->params[0].data.d_int32 == GIMP_RUN_INTERACTIVE)
{
[NSApp activateIgnoringOtherApps: YES];
}
#endif
(* 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_temp_proc_return_write (_writechannel, &proc_return, NULL))
gimp_quit ();
}
}
static void
gimp_process_message (GimpWireMessage *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)
{
GimpWireMessage msg;
/* Run a temp function */
if (! gimp_wire_read_msg (_readchannel, &msg, NULL))
gimp_quit ();
gimp_process_message (&msg);
gimp_wire_destroy (&msg);
}
static gboolean
gimp_extension_read (GIOChannel *channel,
GIOCondition condition,
gpointer data)
{
gimp_single_message ();
return TRUE;
}
static void
gimp_set_pdb_error (const GimpParam *return_vals,
gint n_return_vals)
{
if (pdb_error_message)
{
g_free (pdb_error_message);
pdb_error_message = NULL;
}
pdb_error_status = return_vals[0].data.d_status;
switch (pdb_error_status)
{
case GIMP_PDB_SUCCESS:
case GIMP_PDB_PASS_THROUGH:
break;
case GIMP_PDB_EXECUTION_ERROR:
case GIMP_PDB_CALLING_ERROR:
case GIMP_PDB_CANCEL:
if (n_return_vals > 1 && return_vals[1].type == GIMP_PDB_STRING)
{
pdb_error_message = g_strdup (return_vals[1].data.d_string);
}
break;
}
}
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