evolution/e-util/e-printable.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:
 *		Chris Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gtk/gtk.h>

#include "e-printable.h"

#include "e-marshal.h"

#define EP_CLASS(e) ((EPrintableClass *)((GObject *)e)->class)

G_DEFINE_TYPE (
	EPrintable,
	e_printable,
	G_TYPE_INITIALLY_UNOWNED)

enum {
	PRINT_PAGE,
	DATA_LEFT,
	RESET,
	HEIGHT,
	WILL_FIT,
	LAST_SIGNAL
};

static guint e_printable_signals[LAST_SIGNAL] = { 0, };

static void
e_printable_class_init (EPrintableClass *class)
{
	GObjectClass *object_class = G_OBJECT_CLASS (class);

	e_printable_signals[PRINT_PAGE] = g_signal_new (
		"print_page",
		G_OBJECT_CLASS_TYPE (object_class),
		G_SIGNAL_RUN_LAST,
		G_STRUCT_OFFSET (EPrintableClass, print_page),
		NULL, NULL,
		e_marshal_NONE__OBJECT_DOUBLE_DOUBLE_BOOLEAN,
		G_TYPE_NONE, 4,
		G_TYPE_OBJECT,
		G_TYPE_DOUBLE,
		G_TYPE_DOUBLE,
		G_TYPE_BOOLEAN);

	e_printable_signals[DATA_LEFT] = g_signal_new (
		"data_left",
		G_OBJECT_CLASS_TYPE (object_class),
		G_SIGNAL_RUN_LAST,
		G_STRUCT_OFFSET (EPrintableClass, data_left),
		NULL, NULL,
		e_marshal_BOOLEAN__NONE,
		G_TYPE_BOOLEAN, 0,
		G_TYPE_NONE);

	e_printable_signals[RESET] = g_signal_new (
		"reset",
		G_OBJECT_CLASS_TYPE (object_class),
		G_SIGNAL_RUN_LAST,
		G_STRUCT_OFFSET (EPrintableClass, reset),
		NULL, NULL,
		g_cclosure_marshal_VOID__VOID,
		G_TYPE_NONE, 0,
		G_TYPE_NONE);

	e_printable_signals[HEIGHT] = g_signal_new (
		"height",
		G_OBJECT_CLASS_TYPE (object_class),
		G_SIGNAL_RUN_LAST,
		G_STRUCT_OFFSET (EPrintableClass, height),
		NULL, NULL,
		e_marshal_DOUBLE__OBJECT_DOUBLE_DOUBLE_BOOLEAN,
		G_TYPE_DOUBLE, 4,
		G_TYPE_OBJECT,
		G_TYPE_DOUBLE,
		G_TYPE_DOUBLE,
		G_TYPE_BOOLEAN);

	e_printable_signals[WILL_FIT] = g_signal_new (
		"will_fit",
		G_OBJECT_CLASS_TYPE (object_class),
		G_SIGNAL_RUN_LAST,
		G_STRUCT_OFFSET (EPrintableClass, will_fit),
		NULL, NULL,
		e_marshal_BOOLEAN__OBJECT_DOUBLE_DOUBLE_BOOLEAN,
		G_TYPE_BOOLEAN, 4,
		G_TYPE_OBJECT,
		G_TYPE_DOUBLE,
		G_TYPE_DOUBLE,
		G_TYPE_BOOLEAN);

	class->print_page = NULL;
	class->data_left = NULL;
	class->reset = NULL;
	class->height = NULL;
	class->will_fit = NULL;
}

static void
e_printable_init (EPrintable *e_printable)
{
	/* nothing to do */
}

EPrintable *
e_printable_new (void)
{
	return g_object_new (E_TYPE_PRINTABLE, NULL);
}

void
e_printable_print_page (EPrintable *e_printable,
                        GtkPrintContext *context,
                        gdouble width,
                        gdouble height,
                        gboolean quantized)
{
	g_return_if_fail (E_IS_PRINTABLE (e_printable));

	g_signal_emit (
		e_printable,
		e_printable_signals[PRINT_PAGE], 0,
		context,
		width,
		height,
		quantized);
}

gboolean
e_printable_data_left (EPrintable *e_printable)
{
	gboolean ret_val;

	g_return_val_if_fail (E_IS_PRINTABLE (e_printable), FALSE);

	g_signal_emit (
		e_printable,
		e_printable_signals[DATA_LEFT], 0,
		&ret_val);

	return ret_val;
}

void
e_printable_reset (EPrintable *e_printable)
{
	g_return_if_fail (E_IS_PRINTABLE (e_printable));

	g_signal_emit (
		e_printable,
		e_printable_signals[RESET], 0);
}

gdouble
e_printable_height (EPrintable *e_printable,
                    GtkPrintContext *context,
                    gdouble width,
                    gdouble max_height,
                    gboolean quantized)
{
	gdouble ret_val;

	g_return_val_if_fail (E_IS_PRINTABLE (e_printable), -1);

	g_signal_emit (
		e_printable,
		e_printable_signals[HEIGHT], 0,
		context,
		width,
		max_height,
		quantized,
		&ret_val);

	return ret_val;
}

gboolean
e_printable_will_fit (EPrintable *e_printable,
                      GtkPrintContext *context,
                      gdouble width,
                      gdouble max_height,
                      gboolean quantized)
{
	gboolean ret_val;

	g_return_val_if_fail (E_IS_PRINTABLE (e_printable), FALSE);

	g_signal_emit (
		e_printable,
		e_printable_signals[WILL_FIT], 0,
		context,
		width,
		max_height,
		quantized,
		&ret_val);

	return ret_val;
}