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gimp/plug-ins/print/print-settings.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "print.h"
#include "print-settings.h"
#include "print-utils.h"
#define PRINT_SETTINGS_MAJOR_VERSION 0
#define PRINT_SETTINGS_MINOR_VERSION 4
#define PRINT_SETTINGS_NAME "print-settings"
static GKeyFile * print_settings_key_file_from_settings (PrintData *data);
static void print_settings_add_to_key_file (const gchar *key,
const gchar *value,
gpointer data);
static GKeyFile * print_settings_key_file_from_resource_file (void);
static GKeyFile * print_settings_key_file_from_parasite (gint32 image_ID);
static gboolean print_settings_load_from_key_file (PrintData *data,
GKeyFile *key_file);
static gboolean print_settings_check_version (GKeyFile *key_file);
/*
* set GtkPrintSettings from the contents of a "print-settings"
* image parasite, or, if none exists, from a resource
* file of the same name
*/
gboolean
print_settings_load (PrintData *data)
{
GKeyFile *key_file = print_settings_key_file_from_parasite (data->image_id);
if (! key_file)
key_file = print_settings_key_file_from_resource_file ();
if (key_file)
{
print_settings_load_from_key_file (data, key_file);
g_key_file_free (key_file);
return TRUE;
}
return FALSE;
}
/*
* save all settings as a resource file "print-settings"
* and as an image parasite
*/
void
print_settings_save (PrintData *data)
{
GKeyFile *key_file = print_settings_key_file_from_settings (data);
print_utils_key_file_save_as_rcfile (key_file, PRINT_SETTINGS_NAME);
/* image setup */
if (gimp_image_is_valid (data->image_id))
{
g_key_file_set_integer (key_file, "image-setup",
"unit", data->unit);
g_key_file_set_double (key_file, "image-setup",
"x-resolution", data->xres);
g_key_file_set_double (key_file, "image-setup",
"y-resolution", data->yres);
g_key_file_set_double (key_file, "image-setup",
"x-offset", data->offset_x);
g_key_file_set_double (key_file, "image-setup",
"y-offset", data->offset_y);
g_key_file_set_integer (key_file, "image-setup",
"center-mode", data->center);
g_key_file_set_boolean (key_file, "image-setup",
"use-full-page", data->use_full_page);
print_utils_key_file_save_as_parasite (key_file,
data->image_id,
PRINT_SETTINGS_NAME);
}
g_key_file_free (key_file);
}
/*
* serialize print settings into a GKeyFile
*/
static GKeyFile *
print_settings_key_file_from_settings (PrintData *data)
{
GtkPrintOperation *operation = data->operation;
GtkPrintSettings *settings;
GKeyFile *key_file = g_key_file_new ();
/* put version information into the file */
g_key_file_set_integer (key_file, "meta", "major-version",
PRINT_SETTINGS_MAJOR_VERSION);
g_key_file_set_integer (key_file, "meta", "minor-version",
PRINT_SETTINGS_MINOR_VERSION);
/* save the contents of the GtkPrintSettings for the operation */
settings = gtk_print_operation_get_print_settings (operation);
if (settings)
gtk_print_settings_foreach (settings,
print_settings_add_to_key_file, key_file);
return key_file;
}
/*
* callback used in gtk_print_settings_foreach loop
*/
static void
print_settings_add_to_key_file (const gchar *key,
const gchar *value,
gpointer data)
{
GKeyFile *key_file = data;
g_key_file_set_value (key_file, PRINT_SETTINGS_NAME, key, value);
}
/*
* deserialize a "print-settings" resource file into a GKeyFile
*/
static GKeyFile *
print_settings_key_file_from_resource_file (void)
{
GKeyFile *key_file;
key_file = print_utils_key_file_load_from_rcfile (PRINT_SETTINGS_NAME);
if (key_file && ! print_settings_check_version (key_file))
{
g_key_file_free (key_file);
return NULL;
}
return key_file;
}
/* load information from an image parasite called "print-settings"
* return a GKeyFile containing the information if a valid parasite is found,
* NULL otherwise
*/
static GKeyFile *
print_settings_key_file_from_parasite (gint32 image_ID)
{
GKeyFile *key_file;
key_file = print_utils_key_file_load_from_parasite (image_ID,
PRINT_SETTINGS_NAME);
if (key_file && ! print_settings_check_version (key_file))
{
g_key_file_free (key_file);
return FALSE;
}
return key_file;
}
static gboolean
print_settings_load_from_key_file (PrintData *data,
GKeyFile *key_file)
{
GtkPrintOperation *operation = data->operation;
GtkPrintSettings *settings;
gchar **keys;
gsize n_keys;
gint i;
settings = gtk_print_operation_get_print_settings (operation);
if (! settings)
settings = gtk_print_settings_new ();
keys = g_key_file_get_keys (key_file, PRINT_SETTINGS_NAME, &n_keys, NULL);
if (! keys)
return FALSE;
for (i = 0; i < n_keys; i++)
{
gchar *value;
value = g_key_file_get_value (key_file,
PRINT_SETTINGS_NAME, keys[i], NULL);
if (value)
{
gtk_print_settings_set (settings, keys[i], value);
g_free (value);
}
}
g_strfreev (keys);
if (g_key_file_has_key (key_file, "image-setup", "unit", NULL))
{
data->unit = g_key_file_get_integer (key_file,
"image-setup", "unit", NULL);
}
if (g_key_file_has_key (key_file, "image-setup", "x-resolution", NULL) &&
g_key_file_has_key (key_file, "image-setup", "y-resolution", NULL))
{
data->xres = g_key_file_get_double (key_file,
"image-setup", "x-resolution", NULL);
data->yres = g_key_file_get_double (key_file,
"image-setup", "y-resolution", NULL);
}
if (g_key_file_has_key (key_file, "image-setup", "x-offset", NULL) &&
g_key_file_has_key (key_file, "image-setup", "y-offset", NULL))
{
data->offset_x = g_key_file_get_double (key_file,
"image-setup", "x-offset", NULL);
data->offset_y = g_key_file_get_double (key_file,
"image-setup", "y-offset", NULL);
}
if (g_key_file_has_key (key_file, "image-setup", "center-mode", NULL))
{
data->center = g_key_file_get_integer (key_file,
"image-setup", "center-mode", NULL);
}
if (g_key_file_has_key (key_file, "image-setup", "use-full-page", NULL))
{
data->use_full_page = g_key_file_get_boolean (key_file,
"image-setup", "use-full-page", NULL);
}
gtk_print_operation_set_print_settings (operation, settings);
return TRUE;
}
static gboolean
print_settings_check_version (GKeyFile *key_file)
{
gint major_version;
gint minor_version;
if (! g_key_file_has_group (key_file, "meta"))
return FALSE;
major_version = g_key_file_get_integer (key_file,
"meta", "major-version", NULL);
if (major_version != PRINT_SETTINGS_MAJOR_VERSION)
return FALSE;
minor_version = g_key_file_get_integer (key_file,
"meta", "minor-version", NULL);
if (minor_version != PRINT_SETTINGS_MINOR_VERSION)
return FALSE;
return TRUE;
}
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