path: root/e-util/e-print.c

/*
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      JP Rosevear <jpr@novell.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include "e-print.h"

#include <stdio.h>
#include <string.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>

#include "e-util.h"

/* XXX Would be better if GtkPrint exposed these. */
#define PAGE_SETUP_GROUP_NAME       "Page Setup"
#define PRINT_SETTINGS_GROUP_NAME   "Print Settings"

static gchar *
key_file_get_filename (void)
{
    return g_build_filename (e_get_user_data_dir (), "printing.ini", NULL);
}

static void
load_key_file (GKeyFile *key_file)
{
    gchar *filename;
    GError *error = NULL;

    filename = key_file_get_filename ();

    if (!g_file_test (filename, G_FILE_TEST_EXISTS))
        goto exit;

    g_key_file_load_from_file (
        key_file, filename, G_KEY_FILE_KEEP_COMMENTS |
        G_KEY_FILE_KEEP_TRANSLATIONS, &error);

    if (error != NULL) {
        g_warning ("%s", error->message);
        g_error_free (error);
    }

exit:
    g_free (filename);
}

static void
save_key_file (GKeyFile *key_file)
{
    gchar *contents;
    gchar *filename;
    gsize length;
    GError *error = NULL;

    filename = key_file_get_filename ();
    contents = g_key_file_to_data (key_file, &length, NULL);

    g_file_set_contents (filename, contents, length, &error);

    if (error != NULL) {
        g_warning ("%s", error->message);
        g_error_free (error);
    }

    g_free (contents);
    g_free (filename);
}

static GtkPrintSettings *
load_settings (GKeyFile *key_file)
{
    GtkPrintSettings *settings;
    GError *error = NULL;

    settings = gtk_print_settings_new ();

    gtk_print_settings_load_key_file (
        settings, key_file, PRINT_SETTINGS_GROUP_NAME, &error);

    if (error != NULL) {
        g_warning ("%s", error->message);
        g_error_free (error);
    }

    return settings;
}

static void
save_settings (GtkPrintSettings *settings,
               GKeyFile *key_file)
{
    /* XXX GtkPrintSettings does not distinguish between settings
     *     that should persist and one-time-only settings, such as
     *     page range or number of copies.  All print settings are
     *     persistent by default and we opt out particular keys by
     *     popular demand. */

    gtk_print_settings_unset (settings, GTK_PRINT_SETTINGS_N_COPIES);
    gtk_print_settings_unset (settings, GTK_PRINT_SETTINGS_PAGE_RANGES);
    gtk_print_settings_unset (settings, GTK_PRINT_SETTINGS_PAGE_SET);
    gtk_print_settings_unset (settings, GTK_PRINT_SETTINGS_PRINT_PAGES);

    gtk_print_settings_to_key_file (settings, key_file, NULL);
}

static GtkPageSetup *
load_page_setup (GKeyFile *key_file)
{
    GtkPageSetup *page_setup;
    GError *error = NULL;

    page_setup = gtk_page_setup_new ();

    gtk_page_setup_load_key_file (
        page_setup, key_file, PAGE_SETUP_GROUP_NAME, &error);

    if (error != NULL) {
        g_warning ("%s", error->message);
        g_error_free (error);
    }

    return page_setup;
}

static void
save_page_setup (GtkPageSetup *page_setup,
                 GKeyFile *key_file)
{
    gtk_page_setup_to_key_file (page_setup, key_file, NULL);
}

static void
handle_error (GtkPrintOperation *operation)
{
    GtkWidget *dialog;
    GError *error = NULL;

    dialog = gtk_message_dialog_new_with_markup (
        NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
        "<span weight=\"bold\" size=\"larger\">%s</span>",
        _("An error occurred while printing"));

    gtk_print_operation_get_error (operation, &error);

    if (error != NULL && error->message != NULL)
        gtk_message_dialog_format_secondary_text (
            GTK_MESSAGE_DIALOG (dialog), "%s\n\n%s",
            _("The printing system reported the "
            "following details about the error:"),
            error->message);
    else
        gtk_message_dialog_format_secondary_text (
            GTK_MESSAGE_DIALOG (dialog), "%s",
            _("The printing system did not report "
            "any additional details about the error."));

    if (error != NULL)
        g_error_free (error);

    gtk_dialog_run (GTK_DIALOG (dialog));

    gtk_widget_destroy (dialog);
}

static void
print_done_cb (GtkPrintOperation *operation,
               GtkPrintOperationResult result,
               GKeyFile *key_file)
{
    GtkPrintSettings *settings;

    settings = gtk_print_operation_get_print_settings (operation);

    if (result == GTK_PRINT_OPERATION_RESULT_APPLY)
        save_settings (settings, key_file);
    if (result == GTK_PRINT_OPERATION_RESULT_ERROR)
        handle_error (operation);

    save_key_file (key_file);
    g_key_file_free (key_file);
}

GtkPrintOperation *
e_print_operation_new (void)
{
    GtkPrintOperation *operation;
    GtkPrintSettings *settings;
    GtkPageSetup *page_setup;
    GKeyFile *key_file;

    operation = gtk_print_operation_new ();

    key_file = g_key_file_new ();
    load_key_file (key_file);

    settings = load_settings (key_file);
    gtk_print_operation_set_print_settings (operation, settings);
    g_object_unref (settings);

    page_setup = load_page_setup (key_file);
    gtk_print_operation_set_default_page_setup (operation, page_setup);
    g_object_unref (page_setup);

    g_signal_connect (
        operation, "done",
        G_CALLBACK (print_done_cb), key_file);

    return operation;
}

void
e_print_run_page_setup_dialog (GtkWindow *parent)
{
    GtkPageSetup *new_page_setup;
    GtkPageSetup *old_page_setup;
    GtkPrintSettings *settings;
    GKeyFile *key_file;

    key_file = g_key_file_new ();
    load_key_file (key_file);

    settings = load_settings (key_file);
    old_page_setup = load_page_setup (key_file);
    new_page_setup = gtk_print_run_page_setup_dialog (
        parent, old_page_setup, settings);
    save_page_setup (new_page_setup, key_file);
    save_settings (settings, key_file);

    g_object_unref (new_page_setup);
    g_object_unref (old_page_setup);
    g_object_unref (settings);

    save_key_file (key_file);
    g_key_file_free (key_file);
}