PDFViewer
/* $Id$ */
							/* Copyright (c) 2010 Sébastien Bocahu <zecrazytux@zecrazytux.net> */
							/* Copyright (c) 2011-2020 Pierre Pronchery <khorben@defora.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, version 3 of the License.
							 *
							 * 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, see <http://www.gnu.org/licenses/>. */
							#include <stdlib.h>
							#include <libintl.h>
							#include <Desktop.h>
							#include "common.h"
							#include "pdfviewer.h"
							#include "callbacks.h"
							#include "../config.h"
							/* public */
							/* functions */
							/* on_closex */
							gboolean on_closex(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								on_close(pdfviewer);
								return TRUE;
							}
							/* on_contents */
							void on_contents(gpointer data)
							{
								(void) data;
								desktop_help_contents(PACKAGE, PROGNAME_PDFVIEWER);
							}
							/* on_edit_preferences */
							void on_edit_preferences(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_show_preferences(pdfviewer, TRUE);
							}
							/* on_file_close */
							void on_file_close(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								on_close(pdfviewer);
							}
							/* on_file_new */
							void on_file_new(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_open(pdfviewer, NULL);
							}
							/* on_file_open */
							void on_file_open(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_open_dialog(pdfviewer);
							}
							/* on_file_properties */
							void on_file_properties(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_properties(pdfviewer);
							}
							/* on_view_fullscreen */
							void on_view_fullscreen(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								on_fullscreen(pdfviewer);
							}
							/* on_view_normal_size */
							void on_view_normal_size(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_update_scale(pdfviewer, '=', 1.0);
							}
							/* on_view_zoom_in */
							void on_view_zoom_in(gpointer data)
							{
								on_zoom_in(data);
							}
							/* on_view_zoom_out */
							void on_view_zoom_out(gpointer data)
							{
								on_zoom_out(data);
							}
							/* on_help_contents */
							void on_help_contents(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								on_contents(pdfviewer);
							}
							/* on_help_about */
							void on_help_about(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_about(pdfviewer);
							}
							/* toolbar */
							/* on_close */
							void on_close(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_close(pdfviewer);
							}
							/* on_fullscreen */
							void on_fullscreen(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_fullscreen_toggle(pdfviewer);
							}
							/* on_new */
							void on_new(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_open(pdfviewer, NULL);
							}
							/* on_open */
							void on_open(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdfviewer_open_dialog(pdfviewer);
							}
							/* on_preferences */
							void on_preferences(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								on_edit_preferences(pdfviewer);
							}
							/* on_previous */
							void on_previous(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_update_current(pdfviewer, '-', 1);
								pdf_load_page(pdfviewer);
							}
							/* on_next */
							void on_next(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_update_current(pdfviewer, '+', 1);
								pdf_load_page(pdfviewer);
							}
							/* on_far_before */
							void on_far_before(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								/* should be set in preferences */
								pdf_update_current(pdfviewer, '-', 5); 
								pdf_load_page(pdfviewer);
							}
							/* on_far_after */
							void on_far_after(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_update_current(pdfviewer, '+', 5);
								pdf_load_page(pdfviewer);
							}
							/* on_pdf_close */
							void on_pdf_close(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_close(pdfviewer);
							}
							/* on_zoom_in */
							void on_zoom_in(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_update_scale(pdfviewer, '+', 0.1);
							}
							/* on_zoom_out */
							void on_zoom_out(gpointer data)
							{
								PDFviewer * pdfviewer = data;
								pdf_update_scale(pdfviewer, '-', 0.1);
							}
							