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gimp/app/widgets/gimphelp.c

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/* GIMP - The GNU 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/gimpparamspecs.h"
#include "core/gimpprogress.h"
#include "core/gimp-utils.h"
#include "pdb/gimppdb.h"
#include "pdb/gimpprocedure.h"
#include "plug-in/gimppluginmanager-help-domain.h"
#include "gimphelp.h"
#include "gimphelp-ids.h"
#include "gimpmessagebox.h"
#include "gimpmessagedialog.h"
#include "gimpmessagedialog.h"
#include "gimpwidgets-utils.h"
#include "gimp-log.h"
#include "gimp-intl.h"
typedef struct _GimpIdleHelp GimpIdleHelp;
struct _GimpIdleHelp
{
Gimp *gimp;
GimpProgress *progress;
gchar *help_domain;
gchar *help_locales;
gchar *help_id;
};
/* local function prototypes */
static gboolean gimp_idle_help (GimpIdleHelp *idle_help);
static void gimp_idle_help_free (GimpIdleHelp *idle_help);
static gboolean gimp_help_browser (Gimp *gimp,
GimpProgress *progress);
static void gimp_help_browser_error (Gimp *gimp,
GimpProgress *progress,
const gchar *title,
const gchar *primary,
const gchar *text);
static void gimp_help_call (Gimp *gimp,
GimpProgress *progress,
const gchar *procedure_name,
const gchar *help_domain,
const gchar *help_locales,
const gchar *help_id);
static gint gimp_help_get_help_domains (Gimp *gimp,
gchar ***domain_names,
gchar ***domain_uris);
static gchar * gimp_help_get_default_domain_uri (Gimp *gimp);
static gchar * gimp_help_get_locales (Gimp *gimp);
static gchar * gimp_help_get_user_manual_basedir (void);
static void gimp_help_query_user_manual_online (GimpIdleHelp *idle_help);
/* public functions */
void
gimp_help_show (Gimp *gimp,
GimpProgress *progress,
const gchar *help_domain,
const gchar *help_id)
{
GimpGuiConfig *config;
g_return_if_fail (GIMP_IS_GIMP (gimp));
g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
config = GIMP_GUI_CONFIG (gimp->config);
if (config->use_help)
{
GimpIdleHelp *idle_help = g_slice_new0 (GimpIdleHelp);
idle_help->gimp = gimp;
idle_help->progress = progress;
if (help_domain && strlen (help_domain))
idle_help->help_domain = g_strdup (help_domain);
idle_help->help_locales = gimp_help_get_locales (gimp);
if (help_id && strlen (help_id))
idle_help->help_id = g_strdup (help_id);
GIMP_LOG (HELP, "request for help-id '%s' from help-domain '%s'",
help_id ? help_id : "(null)",
help_domain ? help_domain : "(null)");
g_idle_add ((GSourceFunc) gimp_idle_help, idle_help);
}
}
gboolean
gimp_help_user_manual_is_installed (Gimp *gimp)
{
gchar *basedir;
gboolean found = FALSE;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), FALSE);
/* if GIMP2_HELP_URI is set, assume that the manual can be found there */
if (g_getenv ("GIMP2_HELP_URI"))
return TRUE;
basedir = gimp_help_get_user_manual_basedir ();
if (g_file_test (basedir, G_FILE_TEST_IS_DIR))
{
gchar *locales = gimp_help_get_locales (gimp);
const gchar *s = locales;
const gchar *p;
for (p = strchr (s, ':'); p && !found; p = strchr (s, ':'))
{
gchar *locale = g_strndup (s, p - s);
gchar *path;
path = g_build_filename (basedir, locale, "gimp-help.xml", NULL);
found = g_file_test (path, G_FILE_TEST_IS_REGULAR);
g_free (path);
g_free (locale);
s = p + 1;
}
g_free (locales);
if (! found)
{
gchar *path = g_build_filename (basedir, "en", "gimp-help.xml", NULL);
found = g_file_test (path, G_FILE_TEST_IS_REGULAR);
g_free (path);
}
}
g_free (basedir);
return found;
}
/* private functions */
static gboolean
gimp_idle_help (GimpIdleHelp *idle_help)
{
GimpGuiConfig *config = GIMP_GUI_CONFIG (idle_help->gimp->config);
const gchar *procedure_name = NULL;
if (! idle_help->help_domain &&
! config->user_manual_online &&
! gimp_help_user_manual_is_installed (idle_help->gimp))
{
/* The user manual is not installed locally, ask the user
* if the online version should be used instead.
*/
gimp_help_query_user_manual_online (idle_help);
return FALSE;
}
if (config->help_browser == GIMP_HELP_BROWSER_GIMP)
{
if (gimp_help_browser (idle_help->gimp, idle_help->progress))
procedure_name = "extension-gimp-help-browser-temp";
}
if (config->help_browser == GIMP_HELP_BROWSER_WEB_BROWSER)
{
/* FIXME: should check for procedure availability */
procedure_name = "plug-in-web-browser";
}
if (procedure_name)
gimp_help_call (idle_help->gimp,
idle_help->progress,
procedure_name,
idle_help->help_domain,
idle_help->help_locales,
idle_help->help_id);
gimp_idle_help_free (idle_help);
return FALSE;
}
static void
gimp_idle_help_free (GimpIdleHelp *idle_help)
{
g_free (idle_help->help_domain);
g_free (idle_help->help_locales);
g_free (idle_help->help_id);
g_slice_free (GimpIdleHelp, idle_help);
}
static gboolean
gimp_help_browser (Gimp *gimp,
GimpProgress *progress)
{
static gboolean busy = FALSE;
GimpProcedure *procedure;
if (busy)
return TRUE;
busy = TRUE;
/* Check if a help browser is already running */
procedure = gimp_pdb_lookup_procedure (gimp->pdb,
"extension-gimp-help-browser-temp");
if (! procedure)
{
GValueArray *args = NULL;
gint n_domains = 0;
gchar **help_domains = NULL;
gchar **help_uris = NULL;
GError *error = NULL;
procedure = gimp_pdb_lookup_procedure (gimp->pdb,
"extension-gimp-help-browser");
if (! procedure)
{
gimp_help_browser_error (gimp, progress,
_("Help browser is missing"),
_("The GIMP help browser is not available."),
_("The GIMP help browser plug-in appears "
"to be missing from your installation. "
"You may instead use the web browser "
"for reading the help pages."));
busy = FALSE;
return FALSE;
}
n_domains = gimp_help_get_help_domains (gimp, &help_domains, &help_uris);
args = gimp_procedure_get_arguments (procedure);
gimp_value_array_truncate (args, 5);
g_value_set_int (&args->values[0], GIMP_RUN_INTERACTIVE);
g_value_set_int (&args->values[1], n_domains);
gimp_value_take_stringarray (&args->values[2], help_domains, n_domains);
g_value_set_int (&args->values[3], n_domains);
gimp_value_take_stringarray (&args->values[4], help_uris, n_domains);
gimp_procedure_execute_async (procedure, gimp,
gimp_get_user_context (gimp),
NULL, args, NULL, &error);
g_value_array_free (args);
if (error)
{
gimp_message (gimp, G_OBJECT (progress), GIMP_MESSAGE_ERROR,
"%s", error->message);
g_error_free (error);
}
}
/* Check if the help browser started properly */
procedure = gimp_pdb_lookup_procedure (gimp->pdb,
"extension-gimp-help-browser-temp");
if (! procedure)
{
gimp_help_browser_error (gimp, progress,
_("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,
GimpProgress *progress,
const gchar *title,
const gchar *primary,
const gchar *text)
{
GtkWidget *dialog;
dialog = gimp_message_dialog_new (title, GIMP_STOCK_USER_MANUAL,
NULL, 0,
NULL, NULL,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
_("Use _Web Browser"), GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
if (progress)
{
guint32 window = gimp_progress_get_window (progress);
if (window)
gimp_window_set_transient_for (GTK_WINDOW (dialog), window);
}
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,
GimpProgress *progress,
const gchar *procedure_name,
const gchar *help_domain,
const gchar *help_locales,
const gchar *help_id)
{
GimpProcedure *procedure;
/* Special case the help browser */
if (! strcmp (procedure_name, "extension-gimp-help-browser-temp"))
{
GValueArray *return_vals;
GError *error = NULL;
GIMP_LOG (HELP, "Calling help via %s: %s %s %s",
procedure_name,
help_domain ? help_domain : "(null)",
help_locales ? help_locales : "(null)",
help_id ? help_id : "(null)");
return_vals =
gimp_pdb_execute_procedure_by_name (gimp->pdb,
gimp_get_user_context (gimp),
progress, &error,
procedure_name,
G_TYPE_STRING, help_domain,
G_TYPE_STRING, help_locales,
G_TYPE_STRING, help_id,
G_TYPE_NONE);
g_value_array_free (return_vals);
if (error)
{
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR,
"%s", error->message);
g_error_free (error);
}
return;
}
/* Check if a help parser is already running */
procedure = gimp_pdb_lookup_procedure (gimp->pdb, "extension-gimp-help-temp");
if (! procedure)
{
GValueArray *args = NULL;
gint n_domains = 0;
gchar **help_domains = NULL;
gchar **help_uris = NULL;
GError *error = NULL;
procedure = gimp_pdb_lookup_procedure (gimp->pdb, "extension-gimp-help");
if (! procedure)
/* FIXME: error msg */
return;
n_domains = gimp_help_get_help_domains (gimp, &help_domains, &help_uris);
args = gimp_procedure_get_arguments (procedure);
gimp_value_array_truncate (args, 4);
g_value_set_int (&args->values[0], n_domains);
gimp_value_take_stringarray (&args->values[1], help_domains, n_domains);
g_value_set_int (&args->values[2], n_domains);
gimp_value_take_stringarray (&args->values[3], help_uris, n_domains);
gimp_procedure_execute_async (procedure, gimp,
gimp_get_user_context (gimp), progress,
args, NULL, &error);
g_value_array_free (args);
if (error)
{
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR,
"%s", error->message);
g_error_free (error);
}
}
/* Check if the help parser started properly */
procedure = gimp_pdb_lookup_procedure (gimp->pdb, "extension-gimp-help-temp");
if (procedure)
{
GValueArray *return_vals;
GError *error = NULL;
GIMP_LOG (HELP, "Calling help via %s: %s %s %s",
procedure_name,
help_domain ? help_domain : "(null)",
help_locales ? help_locales : "(null)",
help_id ? help_id : "(null)");
return_vals =
gimp_pdb_execute_procedure_by_name (gimp->pdb,
gimp_get_user_context (gimp),
progress, &error,
"extension-gimp-help-temp",
G_TYPE_STRING, procedure_name,
G_TYPE_STRING, help_domain,
G_TYPE_STRING, help_locales,
G_TYPE_STRING, help_id,
G_TYPE_NONE);
g_value_array_free (return_vals);
if (error)
{
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR,
"%s", error->message);
g_error_free (error);
}
}
}
static gint
gimp_help_get_help_domains (Gimp *gimp,
gchar ***domain_names,
gchar ***domain_uris)
{
gchar **plug_in_domains = NULL;
gchar **plug_in_uris = NULL;
gint i, n_domains;
n_domains = gimp_plug_in_manager_get_help_domains (gimp->plug_in_manager,
&plug_in_domains,
&plug_in_uris);
*domain_names = g_new0 (gchar *, n_domains + 1);
*domain_uris = g_new0 (gchar *, n_domains + 1);
(*domain_names)[0] = g_strdup ("http://www.gimp.org/help");
(*domain_uris)[0] = gimp_help_get_default_domain_uri (gimp);
for (i = 0; i < n_domains; i++)
{
(*domain_names)[i + 1] = plug_in_domains[i];
(*domain_uris)[i + 1] = plug_in_uris[i];
}
g_free (plug_in_domains);
g_free (plug_in_uris);
return n_domains + 1;
}
static gchar *
gimp_help_get_default_domain_uri (Gimp *gimp)
{
GimpGuiConfig *config = GIMP_GUI_CONFIG (gimp->config);
gchar *dir;
gchar *uri;
if (g_getenv ("GIMP2_HELP_URI"))
return g_strdup (g_getenv ("GIMP2_HELP_URI"));
if (config->user_manual_online)
return g_strdup (config->user_manual_online_uri);
dir = gimp_help_get_user_manual_basedir ();
uri = g_filename_to_uri (dir, NULL, NULL);
g_free (dir);
return uri;
}
static gchar *
gimp_help_get_locales (Gimp *gimp)
{
GimpGuiConfig *config = GIMP_GUI_CONFIG (gimp->config);
if (config->help_locales && strlen (config->help_locales))
return g_strdup (config->help_locales);
return g_strjoinv (":", (gchar **) g_get_language_names ());
}
static gchar *
gimp_help_get_user_manual_basedir (void)
{
return g_build_filename (gimp_data_directory (), "help", NULL);
}
static void
gimp_help_query_online_response (GtkWidget *dialog,
gint response,
GimpIdleHelp *idle_help)
{
gtk_widget_destroy (dialog);
if (response == GTK_RESPONSE_ACCEPT)
{
g_object_set (idle_help->gimp->config,
"user-manual-online", TRUE,
NULL);
gimp_help_show (idle_help->gimp,
idle_help->progress,
idle_help->help_domain,
idle_help->help_id);
}
gimp_idle_help_free (idle_help);
}
static void
gimp_help_query_user_manual_online (GimpIdleHelp *idle_help)
{
GtkWidget *dialog;
GtkWidget *button;
dialog = gimp_message_dialog_new (_("GIMP user manual is missing"),
GIMP_STOCK_USER_MANUAL,
NULL, 0, NULL, NULL,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
NULL);
button = gtk_dialog_add_button (GTK_DIALOG (dialog),
_("_Read Online"), GTK_RESPONSE_ACCEPT);
gtk_button_set_image (GTK_BUTTON (button),
gtk_image_new_from_stock (GIMP_STOCK_WEB,
GTK_ICON_SIZE_BUTTON));
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_ACCEPT,
GTK_RESPONSE_CANCEL,
-1);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);
if (idle_help->progress)
{
guint32 window = gimp_progress_get_window (idle_help->progress);
if (window)
gimp_window_set_transient_for (GTK_WINDOW (dialog), window);
}
g_signal_connect (dialog, "response",
G_CALLBACK (gimp_help_query_online_response),
idle_help);
gimp_message_box_set_primary_text (GIMP_MESSAGE_DIALOG (dialog)->box,
_("The GIMP user manual is not installed "
"on your computer."));
gimp_message_box_set_text (GIMP_MESSAGE_DIALOG (dialog)->box,
_("You may either install the additional help "
"package or change your preferences to use "
"the online version."));
gtk_widget_show (dialog);
}
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