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gimp/app/widgets/gimphelp.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimphelp.c
* Copyright (C) 1999-2004 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "config/gimpguiconfig.h"
#include "core/gimp.h"
#include "core/gimp-utils.h"
#include "pdb/procedural_db.h"
#include "plug-in/plug-ins.h"
#include "plug-in/plug-in-run.h"
#include "gimphelp.h"
#include "gimphelp-ids.h"
#include "gimpmessagebox.h"
#include "gimpmessagedialog.h"
#include "gimp-intl.h"
/* #define GIMP_HELP_DEBUG */
typedef struct _GimpIdleHelp GimpIdleHelp;
struct _GimpIdleHelp
{
Gimp *gimp;
gchar *help_domain;
gchar *help_locales;
gchar *help_id;
};
/* local function prototypes */
static gint gimp_idle_help (gpointer data);
static gboolean gimp_help_browser (Gimp *gimp);
static void gimp_help_browser_error (Gimp *gimp,
const gchar *title,
const gchar *primary,
const gchar *text);
static void gimp_help_call (Gimp *gimp,
const gchar *procedure,
const gchar *help_domain,
const gchar *help_locales,
const gchar *help_id);
static gchar * gimp_help_get_locales (GimpGuiConfig *config);
/* public functions */
void
gimp_help_show (Gimp *gimp,
const gchar *help_domain,
const gchar *help_id)
{
GimpGuiConfig *config;
g_return_if_fail (GIMP_IS_GIMP (gimp));
config = GIMP_GUI_CONFIG (gimp->config);
if (config->use_help)
{
GimpIdleHelp *idle_help = g_new0 (GimpIdleHelp, 1);
idle_help->gimp = gimp;
if (help_domain && strlen (help_domain))
idle_help->help_domain = g_strdup (help_domain);
idle_help->help_locales = gimp_help_get_locales (config);
if (help_id && strlen (help_id))
idle_help->help_id = g_strdup (help_id);
g_idle_add (gimp_idle_help, idle_help);
if (gimp->be_verbose)
g_print ("HELP: request for help-id '%s' from help-domain '%s'\n",
help_id ? help_id : "(null)",
help_domain ? help_domain : "(null)");
}
}
/* private functions */
static gboolean
gimp_idle_help (gpointer data)
{
GimpIdleHelp *idle_help = data;
GimpGuiConfig *config = GIMP_GUI_CONFIG (idle_help->gimp->config);
const gchar *procedure = NULL;
#ifdef GIMP_HELP_DEBUG
g_printerr ("Help Domain: %s\n",
idle_help->help_domain ? idle_help->help_domain : "NULL");
g_printerr ("Help ID: %s\n\n",
idle_help->help_id ? idle_help->help_id : "NULL");
#endif
if (config->help_browser == GIMP_HELP_BROWSER_GIMP)
{
if (gimp_help_browser (idle_help->gimp))
procedure = "extension_gimp_help_browser_temp";
}
if (config->help_browser == GIMP_HELP_BROWSER_WEB_BROWSER)
{
/* FIXME: should check for procedure availability */
procedure = "plug_in_web_browser";
}
if (procedure)
gimp_help_call (idle_help->gimp,
procedure,
idle_help->help_domain,
idle_help->help_locales,
idle_help->help_id);
g_free (idle_help->help_domain);
g_free (idle_help->help_locales);
g_free (idle_help->help_id);
g_free (idle_help);
return FALSE;
}
static gboolean
gimp_help_browser (Gimp *gimp)
{
static gboolean busy = FALSE;
ProcRecord *proc_rec;
if (busy)
return TRUE;
busy = TRUE;
/* Check if a help browser is already running */
proc_rec = procedural_db_lookup (gimp, "extension_gimp_help_browser_temp");
if (! proc_rec)
{
Argument *args = NULL;
proc_rec = procedural_db_lookup (gimp, "extension_gimp_help_browser");
if (! proc_rec)
{
gimp_help_browser_error (gimp,
_("Help browser not found"),
_("Could not find GIMP help browser."),
_("The GIMP help browser plug-in appears "
"to be missing from your installation."));
busy = FALSE;
return FALSE;
}
args = g_new (Argument, 1);
args[0].arg_type = GIMP_PDB_INT32;
args[0].value.pdb_int = GIMP_RUN_INTERACTIVE;
plug_in_run (gimp, gimp_get_user_context (gimp), NULL,
proc_rec, args, 1, FALSE, TRUE, -1);
procedural_db_destroy_args (args, 1);
}
/* Check if the help browser started properly */
proc_rec = procedural_db_lookup (gimp, "extension_gimp_help_browser_temp");
if (! proc_rec)
{
gimp_help_browser_error (gimp,
_("Help browser doesn't start"),
_("Could not start the GIMP help browser plug-in."),
NULL);
busy = FALSE;
return FALSE;
}
busy = FALSE;
return TRUE;
}
static void
gimp_help_browser_error (Gimp *gimp,
const gchar *title,
const gchar *primary,
const gchar *text)
{
GtkWidget *dialog;
dialog =
gimp_message_dialog_new (title, GIMP_STOCK_WARNING,
NULL, 0,
NULL, NULL,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
_("Use _web browser instead"), GTK_RESPONSE_OK,
NULL);
gimp_message_box_set_primary_text (GIMP_MESSAGE_DIALOG (dialog)->box, primary);
gimp_message_box_set_text (GIMP_MESSAGE_DIALOG (dialog)->box, text);
if (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK)
g_object_set (gimp->config,
"help-browser", GIMP_HELP_BROWSER_WEB_BROWSER,
NULL);
gtk_widget_destroy (dialog);
}
static void
gimp_help_call (Gimp *gimp,
const gchar *procedure,
const gchar *help_domain,
const gchar *help_locales,
const gchar *help_id)
{
ProcRecord *proc_rec;
/* Check if a help parser is already running */
proc_rec = procedural_db_lookup (gimp, "extension_gimp_help_temp");
if (! proc_rec)
{
Argument *args = NULL;
gint n_domains = 0;
gchar **help_domains = NULL;
gchar **help_uris = NULL;
proc_rec = procedural_db_lookup (gimp, "extension_gimp_help");
if (! proc_rec)
/* FIXME: error msg */
return;
n_domains = plug_ins_help_domains (gimp, &help_domains, &help_uris);
args = g_new (Argument, 4);
args[0].arg_type = GIMP_PDB_INT32;
args[0].value.pdb_int = n_domains;
args[1].arg_type = GIMP_PDB_STRINGARRAY;
args[1].value.pdb_pointer = help_domains;
args[2].arg_type = GIMP_PDB_INT32;
args[2].value.pdb_int = n_domains;
args[3].arg_type = GIMP_PDB_STRINGARRAY;
args[3].value.pdb_pointer = help_uris;
plug_in_run (gimp, gimp_get_user_context (gimp), NULL,
proc_rec, args, 4, FALSE, TRUE, -1);
procedural_db_destroy_args (args, 4);
}
/* Check if the help parser started properly */
proc_rec = procedural_db_lookup (gimp, "extension_gimp_help_temp");
if (proc_rec)
{
Argument *return_vals;
gint n_return_vals;
#ifdef GIMP_HELP_DEBUG
g_printerr ("Calling help via %s: %s %s %s\n",
procedure,
help_domain ? help_domain : "(null)",
help_locales ? help_locales : "(null)",
help_id ? help_id : "(null)");
#endif
return_vals =
procedural_db_run_proc (gimp,
gimp_get_user_context (gimp),
NULL,
"extension_gimp_help_temp",
&n_return_vals,
GIMP_PDB_STRING, procedure,
GIMP_PDB_STRING, help_domain,
GIMP_PDB_STRING, help_locales,
GIMP_PDB_STRING, help_id,
GIMP_PDB_END);
procedural_db_destroy_args (return_vals, n_return_vals);
}
}
static gchar *
gimp_help_get_locales (GimpGuiConfig *config)
{
const gchar *language;
gchar *locale;
if (config->help_locales && strlen (config->help_locales))
return g_strdup (config->help_locales);
locale = gimp_get_default_language ("LC_MESSAGES");
/* Simulate the behaviour of GNU gettext() and look
* at LANGUAGE if the locale is not the "C" locale.
*/
language = g_getenv ("LANGUAGE");
if (language && (locale == NULL || strcmp (locale, "C")))
{
g_free (locale);
locale = g_strdup (language);
}
return locale;
}
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