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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.
*/
#define PRINT_SETTINGS_MAJOR_VERSION 0
#define PRINT_SETTINGS_MINOR_VERSION 3
#include "config.h"
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "print.h"
#include "print-settings.h"
static GKeyFile * print_settings_key_file_from_settings (PrintData *data);
static void save_print_settings_resource_file (GKeyFile *settings_key_file);
static void save_print_settings_as_parasite (GKeyFile *settings_key_file,
gint32 image_ID);
static void add_print_setting_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 load_print_settings_from_key_file (PrintData *data,
GKeyFile *key_file);
static GKeyFile * 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
load_print_settings (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)
{
load_print_settings_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
save_print_settings (PrintData *data)
{
GKeyFile *key_file;
key_file = print_settings_key_file_from_settings (data);
save_print_settings_resource_file (key_file);
/* 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);
save_print_settings_as_parasite (key_file, data->image_id);
}
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 ();
GtkPageSetup *page_setup;
g_key_file_set_list_separator (key_file, '=');
/* 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, add_print_setting_to_key_file,
key_file);
}
/* page setup */
page_setup = gtk_print_operation_get_default_page_setup (operation);
if (page_setup)
{
GtkPaperSize *paper_size;
GtkPageOrientation orientation;
const gchar *name;
orientation = gtk_page_setup_get_orientation (page_setup);
g_key_file_set_integer (key_file, "page-setup", "orientation",
orientation);
paper_size = gtk_page_setup_get_paper_size (page_setup);
name = gtk_paper_size_get_name (paper_size);
if (name)
{
g_key_file_set_string (key_file, "paper-size", "name", name);
name = gtk_paper_size_get_ppd_name (paper_size);
if (name)
{
g_key_file_set_string (key_file, "paper-size", "ppd-name",
name);
}
if (name || gtk_paper_size_is_custom (paper_size))
{
g_key_file_set_string (key_file, "paper-size", "display-name",
gtk_paper_size_get_display_name (paper_size));
g_key_file_set_double (key_file, "paper-size", "width",
gtk_paper_size_get_width (paper_size,
GTK_UNIT_POINTS));
g_key_file_set_double (key_file, "paper-size", "height",
gtk_paper_size_get_height (paper_size,
GTK_UNIT_POINTS));
}
}
}
#if 0
/* other settings */
g_key_file_set_boolean (key_file, "other-settings", "show-header",
data->show_info_header);
#endif
return key_file;
}
/*
* create a resource file from a GKeyFile holding the settings
*/
static void
save_print_settings_resource_file (GKeyFile *settings_key_file)
{
gchar *filename;
gchar *contents;
gsize length;
GError *error = NULL;
contents = g_key_file_to_data (settings_key_file, &length, &error);
if (error)
{
g_warning ("Unable to get contents of settings key file: %s",
error->message);
g_error_free (error);
return;
}
filename = g_build_filename (gimp_directory (), "print-settings", NULL);
if (! g_file_set_contents (filename, contents, length, &error))
{
g_warning ("Unable to write print settings to '%s': %s",
gimp_filename_to_utf8 (filename), error->message);
g_error_free (error);
}
g_free (filename);
g_free (contents);
}
/*
* create an image parasite called "print-settings" from a GKeyFile
* holding the print settings
*/
static void
save_print_settings_as_parasite (GKeyFile *settings_key_file,
gint32 image_ID)
{
gchar *contents;
gsize length;
GError *error = NULL;
contents = g_key_file_to_data (settings_key_file, &length, &error);
if (! contents)
{
g_warning ("Unable to get contents of settings key file: %s",
error->message);
g_error_free (error);
return;
}
gimp_image_attach_new_parasite (image_ID, "print-settings",
0, length, contents);
g_free (contents);
}
/*
* callback used in gtk_print_settings_foreach loop
*/
static void
add_print_setting_to_key_file (const gchar *key,
const gchar *value,
gpointer data)
{
GKeyFile *key_file = data;
g_key_file_set_value (key_file, "print-settings", key, value);
}
/*
* deserialize a "print-settings" resource file into a GKeyFile
*/
static GKeyFile *
print_settings_key_file_from_resource_file (void)
{
GKeyFile *key_file = g_key_file_new ();
gchar *filename;
g_key_file_set_list_separator (key_file, '=');
filename = g_build_filename (gimp_directory (), "print-settings", NULL);
if (! g_key_file_load_from_file (key_file, filename, G_KEY_FILE_NONE, NULL))
{
g_key_file_free (key_file);
key_file = NULL;
}
g_free (filename);
return check_version (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)
{
GimpParasite *parasite;
GKeyFile *key_file;
parasite = gimp_image_parasite_find (image_ID, "print-settings");
if (! parasite)
return NULL;
key_file = g_key_file_new ();
g_key_file_set_list_separator (key_file, '=');
if (! g_key_file_load_from_data (key_file,
gimp_parasite_data (parasite),
gimp_parasite_data_size (parasite),
G_KEY_FILE_NONE, NULL))
{
g_key_file_free (key_file);
key_file = NULL;;
}
gimp_parasite_free (parasite);
return check_version (key_file);
}
static GtkPaperSize *
load_paper_size_from_key_file (GKeyFile *key_file)
{
const gchar *name;
const gchar *ppd_name;
const gchar *display_name;
gdouble width;
gdouble height;
name = g_key_file_get_string (key_file, "paper-size", "name",
NULL);
ppd_name = g_key_file_get_string (key_file, "paper-size", "ppd-name",
NULL);
display_name = g_key_file_get_string (key_file, "paper-size", "display-name",
NULL);
width = g_key_file_get_double (key_file, "paper-size", "width", NULL);
height = g_key_file_get_double (key_file, "paper-size", "height", NULL);
if (ppd_name && display_name)
{
return gtk_paper_size_new_from_ppd (ppd_name,
display_name, width, height);
}
if (name && display_name)
{
return gtk_paper_size_new_custom (name,
display_name, width, height,
GTK_UNIT_POINTS);
}
return gtk_paper_size_new (name);
}
static gboolean
load_print_settings_from_key_file (PrintData *data,
GKeyFile *key_file)
{
GtkPrintOperation *operation = data->operation;
GtkPrintSettings *settings;
GtkPageSetup *page_setup;
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", &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", keys[i], NULL);
if (value)
{
gtk_print_settings_set (settings, keys[i], value);
g_free (value);
}
}
g_strfreev (keys);
/* page setup parameters */
page_setup = gtk_print_operation_get_default_page_setup (operation);
if (! page_setup)
page_setup = gtk_page_setup_new ();
if (g_key_file_has_key (key_file, "paper-size", "name", NULL))
{
GtkPaperSize *paper_size = load_paper_size_from_key_file (key_file);
gtk_page_setup_set_paper_size_and_default_margins (page_setup,
paper_size);
}
if (g_key_file_has_key (key_file, "page-setup", "orientation", NULL))
{
GtkPageOrientation orientation;
orientation = g_key_file_get_integer (key_file,
"page-setup", "orientation", NULL);
gtk_page_setup_set_orientation (page_setup, orientation);
gtk_print_settings_set_orientation (settings, orientation);
data->orientation = orientation;
}
gtk_print_operation_set_default_page_setup (operation, page_setup);
g_object_unref (page_setup);
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);
}
#if 0
/* other settings */
if (g_key_file_has_key (key_file, "other-settings", "show-header", NULL))
{
data->show_info_header = g_key_file_get_boolean (key_file,
"other-settings",
"show-header", NULL);
}
else
#endif
{
data->show_info_header = FALSE;
}
gtk_print_operation_set_print_settings (operation, settings);
return TRUE;
}
static GKeyFile *
check_version (GKeyFile *key_file)
{
gint major_version;
gint minor_version;
if (! key_file || ! g_key_file_has_group (key_file, "meta"))
return NULL;
major_version = g_key_file_get_integer (key_file,
"meta", "major-version", NULL);
if (major_version != PRINT_SETTINGS_MAJOR_VERSION)
return NULL;
minor_version = g_key_file_get_integer (key_file,
"meta", "minor-version", NULL);
if (minor_version != PRINT_SETTINGS_MINOR_VERSION)
return NULL;
return key_file;
}
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