325 lines
10 KiB
C
325 lines
10 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <libpika/pika.h>
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#include <libpika/pikaui.h>
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#include "print.h"
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#include "print-settings.h"
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#include "print-utils.h"
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#define PRINT_SETTINGS_MAJOR_VERSION 0
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#define PRINT_SETTINGS_MINOR_VERSION 4
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#define PRINT_SETTINGS_NAME "print-settings"
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static GKeyFile * print_settings_key_file_from_settings (PrintData *data);
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static void print_settings_add_to_key_file (const gchar *key,
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const gchar *value,
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gpointer data);
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static GKeyFile * print_settings_key_file_from_resource_file (void);
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static GKeyFile * print_settings_key_file_from_parasite (PikaImage *image);
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static gboolean print_settings_load_from_key_file (PrintData *data,
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GKeyFile *key_file);
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static gboolean print_settings_check_version (GKeyFile *key_file);
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/*
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* set GtkPrintSettings from the contents of a "print-settings"
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* image parasite, or, if none exists, from a resource
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* file of the same name
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*/
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gboolean
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print_settings_load (PrintData *data)
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{
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GKeyFile *key_file = print_settings_key_file_from_parasite (data->image);
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if (! key_file)
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key_file = print_settings_key_file_from_resource_file ();
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if (key_file)
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{
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print_settings_load_from_key_file (data, key_file);
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g_key_file_free (key_file);
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return TRUE;
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}
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return FALSE;
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}
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/*
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* save all settings as a resource file "print-settings"
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* and as an image parasite
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*/
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void
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print_settings_save (PrintData *data)
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{
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GKeyFile *key_file = print_settings_key_file_from_settings (data);
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/* image setup */
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if (pika_image_is_valid (data->image))
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{
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gdouble xres;
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gdouble yres;
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pika_image_get_resolution (data->image, &xres, &yres);
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g_key_file_set_integer (key_file, "image-setup",
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"unit", data->unit);
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/* Do not save the print resolution when it is the expected image
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* resolution so that changing it (i.e. in "print size" dialog)
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* is not overridden by any previous prints.
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*/
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if ((data->min_xres <= xres && ABS (xres - data->xres) > 0.1) ||
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(data->min_yres <= yres && ABS (yres - data->yres) > 0.1) ||
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(data->min_xres > xres && ABS (data->min_xres - data->xres) > 0.1) ||
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(data->min_yres > yres && ABS (data->min_yres - data->yres) > 0.1))
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{
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g_key_file_set_double (key_file, "image-setup",
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"x-resolution", data->xres);
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g_key_file_set_double (key_file, "image-setup",
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"y-resolution", data->yres);
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}
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g_key_file_set_double (key_file, "image-setup",
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"x-offset", data->offset_x);
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g_key_file_set_double (key_file, "image-setup",
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"y-offset", data->offset_y);
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g_key_file_set_integer (key_file, "image-setup",
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"center-mode", data->center);
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g_key_file_set_boolean (key_file, "image-setup",
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"use-full-page", data->use_full_page);
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g_key_file_set_boolean (key_file, "image-setup",
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"crop-marks", data->draw_crop_marks);
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print_utils_key_file_save_as_parasite (key_file,
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data->image,
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PRINT_SETTINGS_NAME);
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}
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/* some settings shouldn't be made persistent on a global level,
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* so they are only stored in the image, not in the rcfile
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*/
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g_key_file_remove_key (key_file, "image-setup", "x-resolution", NULL);
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g_key_file_remove_key (key_file, "image-setup", "y-resolution", NULL);
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g_key_file_remove_key (key_file, "image-setup", "x-offset", NULL);
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g_key_file_remove_key (key_file, "image-setup", "y-offset", NULL);
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g_key_file_remove_key (key_file, PRINT_SETTINGS_NAME, "n-copies", NULL);
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print_utils_key_file_save_as_rcfile (key_file, PRINT_SETTINGS_NAME);
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g_key_file_free (key_file);
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}
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/*
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* serialize print settings into a GKeyFile
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*/
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static GKeyFile *
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print_settings_key_file_from_settings (PrintData *data)
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{
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GtkPrintOperation *operation = data->operation;
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GtkPrintSettings *settings;
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GKeyFile *key_file = g_key_file_new ();
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/* put version information into the file */
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g_key_file_set_integer (key_file, "meta", "major-version",
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PRINT_SETTINGS_MAJOR_VERSION);
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g_key_file_set_integer (key_file, "meta", "minor-version",
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PRINT_SETTINGS_MINOR_VERSION);
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/* save the contents of the GtkPrintSettings for the operation */
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settings = gtk_print_operation_get_print_settings (operation);
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if (settings)
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gtk_print_settings_foreach (settings,
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print_settings_add_to_key_file, key_file);
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return key_file;
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}
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/*
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* callback used in gtk_print_settings_foreach loop
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*/
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static void
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print_settings_add_to_key_file (const gchar *key,
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const gchar *value,
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gpointer data)
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{
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GKeyFile *key_file = data;
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g_key_file_set_value (key_file, PRINT_SETTINGS_NAME, key, value);
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}
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/*
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* deserialize a "print-settings" resource file into a GKeyFile
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*/
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static GKeyFile *
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print_settings_key_file_from_resource_file (void)
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{
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GKeyFile *key_file;
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key_file = print_utils_key_file_load_from_rcfile (PRINT_SETTINGS_NAME);
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if (key_file && ! print_settings_check_version (key_file))
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{
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g_key_file_free (key_file);
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return NULL;
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}
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return key_file;
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}
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/* load information from an image parasite called "print-settings"
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* return a GKeyFile containing the information if a valid parasite is found,
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* NULL otherwise
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*/
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static GKeyFile *
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print_settings_key_file_from_parasite (PikaImage *image)
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{
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GKeyFile *key_file;
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key_file = print_utils_key_file_load_from_parasite (image,
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PRINT_SETTINGS_NAME);
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if (key_file && ! print_settings_check_version (key_file))
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{
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g_key_file_free (key_file);
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return NULL;
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}
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return key_file;
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}
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static gboolean
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print_settings_load_from_key_file (PrintData *data,
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GKeyFile *key_file)
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{
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GtkPrintOperation *operation = data->operation;
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GtkPrintSettings *settings;
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gchar **keys;
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gsize n_keys;
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gint i;
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settings = gtk_print_operation_get_print_settings (operation);
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if (! settings)
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settings = gtk_print_settings_new ();
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keys = g_key_file_get_keys (key_file, PRINT_SETTINGS_NAME, &n_keys, NULL);
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if (! keys)
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return FALSE;
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for (i = 0; i < n_keys; i++)
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{
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gchar *value;
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value = g_key_file_get_value (key_file,
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PRINT_SETTINGS_NAME, keys[i], NULL);
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if (value)
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{
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gtk_print_settings_set (settings, keys[i], value);
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g_free (value);
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}
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}
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g_strfreev (keys);
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if (g_key_file_has_key (key_file, "image-setup", "unit", NULL))
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{
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data->unit = g_key_file_get_integer (key_file, "image-setup",
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"unit", NULL);
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}
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if (g_key_file_has_key (key_file, "image-setup", "x-resolution", NULL) &&
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g_key_file_has_key (key_file, "image-setup", "y-resolution", NULL))
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{
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data->xres = g_key_file_get_double (key_file, "image-setup",
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"x-resolution", NULL);
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data->yres = g_key_file_get_double (key_file, "image-setup",
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"y-resolution", NULL);
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}
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if (g_key_file_has_key (key_file, "image-setup", "x-offset", NULL) &&
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g_key_file_has_key (key_file, "image-setup", "y-offset", NULL))
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{
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data->offset_x = g_key_file_get_double (key_file, "image-setup",
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"x-offset", NULL);
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data->offset_y = g_key_file_get_double (key_file, "image-setup",
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"y-offset", NULL);
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}
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if (g_key_file_has_key (key_file, "image-setup", "center-mode", NULL))
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{
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data->center = g_key_file_get_integer (key_file, "image-setup",
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"center-mode", NULL);
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}
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if (g_key_file_has_key (key_file, "image-setup", "use-full-page", NULL))
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{
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data->use_full_page = g_key_file_get_boolean (key_file, "image-setup",
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"use-full-page", NULL);
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}
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if (g_key_file_has_key (key_file, "image-setup", "crop-marks", NULL))
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{
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data->draw_crop_marks = g_key_file_get_boolean (key_file, "image-setup",
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"crop-marks", NULL);
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}
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gtk_print_operation_set_print_settings (operation, settings);
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return TRUE;
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}
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static gboolean
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print_settings_check_version (GKeyFile *key_file)
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{
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gint major_version;
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gint minor_version;
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if (! g_key_file_has_group (key_file, "meta"))
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return FALSE;
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major_version = g_key_file_get_integer (key_file,
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"meta", "major-version", NULL);
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if (major_version != PRINT_SETTINGS_MAJOR_VERSION)
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return FALSE;
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minor_version = g_key_file_get_integer (key_file,
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"meta", "minor-version", NULL);
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if (minor_version != PRINT_SETTINGS_MINOR_VERSION)
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return FALSE;
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return TRUE;
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}
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