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gimp/plug-ins/help/help.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* The GIMP Help plug-in
* Copyright (C) 1999-2008 Sven Neumann <sven@gimp.org>
* Michael Natterer <mitch@gimp.org>
* Henrik Brix Andersen <brix@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h> /* strlen */
#include <glib.h>
#include "libgimp/gimp.h"
#include "gimphelp.h"
#include "libgimp/stdplugins-intl.h"
/* defines */
#define GIMP_HELP_EXT_PROC "extension-gimp-help"
#define GIMP_HELP_TEMP_EXT_PROC "extension-gimp-help-temp"
typedef struct
{
gchar *procedure;
gchar *help_domain;
gchar *help_locales;
gchar *help_id;
} IdleHelp;
/* forward declarations */
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void temp_proc_install (void);
static void temp_proc_run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void load_help (const gchar *procedure,
const gchar *help_domain,
const gchar *help_locales,
const gchar *help_id);
static gboolean load_help_idle (gpointer data);
static GimpHelpProgress * load_help_progress_new (void);
/* local variables */
static GMainLoop *main_loop = NULL;
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "num-domain-names", "" },
{ GIMP_PDB_STRINGARRAY, "domain-names", "" },
{ GIMP_PDB_INT32, "num-domain-uris", "" },
{ GIMP_PDB_STRINGARRAY, "domain-uris", "" }
};
gimp_install_procedure (GIMP_HELP_EXT_PROC,
"", /* FIXME */
"", /* FIXME */
"Sven Neumann <sven@gimp.org>, "
"Michael Natterer <mitch@gimp.org>, "
"Henrik Brix Andersen <brix@gimp.org>",
"Sven Neumann, Michael Natterer & Henrik Brix Andersen",
"1999-2008",
NULL,
"",
GIMP_EXTENSION,
G_N_ELEMENTS (args), 0,
args, NULL);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
INIT_I18N ();
/* make sure all the arguments are there */
if (nparams == 4)
{
if (! gimp_help_init (param[0].data.d_int32,
param[1].data.d_stringarray,
param[2].data.d_int32,
param[3].data.d_stringarray))
{
status = GIMP_PDB_CALLING_ERROR;
}
}
else
{
g_printerr ("help: wrong number of arguments in procedure call.\n");
status = GIMP_PDB_CALLING_ERROR;
}
if (status == GIMP_PDB_SUCCESS)
{
main_loop = g_main_loop_new (NULL, FALSE);
temp_proc_install ();
gimp_extension_ack ();
gimp_extension_enable ();
g_main_loop_run (main_loop);
g_main_loop_unref (main_loop);
main_loop = NULL;
gimp_uninstall_temp_proc (GIMP_HELP_TEMP_EXT_PROC);
}
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
*nreturn_vals = 1;
*return_vals = values;
}
static void
temp_proc_install (void)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_STRING, "procedure", "The procedure of the browser to use" },
{ GIMP_PDB_STRING, "help-domain", "Help domain to use" },
{ GIMP_PDB_STRING, "help-locales", "Language to use" },
{ GIMP_PDB_STRING, "help-id", "Help ID to open" }
};
gimp_install_temp_proc (GIMP_HELP_TEMP_EXT_PROC,
"DON'T USE THIS ONE",
"(Temporary procedure)",
"Sven Neumann <sven@gimp.org>, "
"Michael Natterer <mitch@gimp.org>"
"Henrik Brix Andersen <brix@gimp.org",
"Sven Neumann, Michael Natterer & Henrik Brix Andersen",
"1999-2008",
NULL,
"",
GIMP_TEMPORARY,
G_N_ELEMENTS (args), 0,
args, NULL,
temp_proc_run);
}
static void
temp_proc_run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
const gchar *procedure = NULL;
const gchar *help_domain = GIMP_HELP_DEFAULT_DOMAIN;
const gchar *help_locales = NULL;
const gchar *help_id = GIMP_HELP_DEFAULT_ID;
*nreturn_vals = 1;
*return_vals = values;
/* make sure all the arguments are there */
if (nparams == 4)
{
if (param[0].data.d_string && strlen (param[0].data.d_string))
procedure = param[0].data.d_string;
if (param[1].data.d_string && strlen (param[1].data.d_string))
help_domain = param[1].data.d_string;
if (param[2].data.d_string && strlen (param[2].data.d_string))
help_locales = param[2].data.d_string;
if (param[3].data.d_string && strlen (param[3].data.d_string))
help_id = param[3].data.d_string;
}
if (! procedure)
status = GIMP_PDB_CALLING_ERROR;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
if (status == GIMP_PDB_SUCCESS)
load_help (procedure, help_domain, help_locales, help_id);
}
static void
load_help (const gchar *procedure,
const gchar *help_domain,
const gchar *help_locales,
const gchar *help_id)
{
IdleHelp *idle_help = g_slice_new (IdleHelp);
idle_help->procedure = g_strdup (procedure);
idle_help->help_domain = g_strdup (help_domain);
idle_help->help_locales = g_strdup (help_locales);
idle_help->help_id = g_strdup (help_id);
g_idle_add (load_help_idle, idle_help);
}
static gboolean
load_help_idle (gpointer data)
{
IdleHelp *idle_help = data;
GimpHelpDomain *domain;
domain = gimp_help_lookup_domain (idle_help->help_domain);
if (domain)
{
GimpHelpProgress *progress = NULL;
GList *locales;
gchar *uri;
gboolean fatal_error;
locales = gimp_help_parse_locales (idle_help->help_locales);
if (! g_str_has_prefix (domain->help_uri, "file:"))
progress = load_help_progress_new ();
uri = gimp_help_domain_map (domain, locales, idle_help->help_id,
progress, NULL, &fatal_error);
if (progress)
gimp_help_progress_free (progress);
g_list_free_full (locales, (GDestroyNotify) g_free);
if (uri)
{
GimpParam *return_vals;
gint n_return_vals;
#ifdef GIMP_HELP_DEBUG
g_printerr ("help: calling '%s' for '%s'\n",
idle_help->procedure, uri);
#endif
return_vals = gimp_run_procedure (idle_help->procedure,
&n_return_vals,
GIMP_PDB_STRING, uri,
GIMP_PDB_END);
gimp_destroy_params (return_vals, n_return_vals);
g_free (uri);
}
else if (fatal_error)
{
g_main_loop_quit (main_loop);
}
}
g_free (idle_help->procedure);
g_free (idle_help->help_domain);
g_free (idle_help->help_locales);
g_free (idle_help->help_id);
g_slice_free (IdleHelp, idle_help);
return FALSE;
}
static void
load_help_progress_start (const gchar *message,
gboolean cancelable,
gpointer user_data)
{
gimp_progress_init (message);
}
static void
load_help_progress_update (gdouble value,
gpointer user_data)
{
gimp_progress_update (value);
}
static void
load_help_progress_end (gpointer user_data)
{
gimp_progress_end ();
}
static GimpHelpProgress *
load_help_progress_new (void)
{
static const GimpHelpProgressVTable vtable =
{
load_help_progress_start,
load_help_progress_end,
load_help_progress_update
};
return gimp_help_progress_new (&vtable, NULL);
}
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