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

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * e-printable.c: an object printer.
 *
 * Author:
 *   Christopher James Lahey <clahey@helixcode.com>
 *
 * (C) 2000 Helix Code, Inc.
 */
#include <config.h>
#include <gtk/gtksignal.h>
#include "e-util.h"
#include "e-printable.h"

#define EP_CLASS(e) ((EPrintableClass *)((GtkObject *)e)->klass)

#define PARENT_TYPE gtk_object_get_type ()
                      

static GtkObjectClass *e_printable_parent_class;

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

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

static void
e_printable_class_init (GtkObjectClass *object_class)
{
    EPrintableClass *klass = E_PRINTABLE_CLASS(object_class);
    e_printable_parent_class = gtk_type_class (PARENT_TYPE);
    
    e_printable_signals [PRINT_PAGE] =
        gtk_signal_new ("print_page",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EPrintableClass, print_page),
                e_marshal_NONE__OBJECT_DOUBLE_DOUBLE_BOOL,
                GTK_TYPE_NONE, 4, GTK_TYPE_OBJECT, GTK_TYPE_DOUBLE, GTK_TYPE_DOUBLE, GTK_TYPE_BOOL);

    e_printable_signals [DATA_LEFT] =
        gtk_signal_new ("data_left",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EPrintableClass, data_left),
                gtk_marshal_BOOL__NONE,
                GTK_TYPE_BOOL, 0, GTK_TYPE_NONE);

    e_printable_signals [RESET] =
        gtk_signal_new ("reset",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EPrintableClass, reset),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0, GTK_TYPE_NONE);

    e_printable_signals [HEIGHT] =
        gtk_signal_new ("height",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EPrintableClass, height),
                e_marshal_DOUBLE__OBJECT_DOUBLE_DOUBLE,
                GTK_TYPE_DOUBLE, 3, GTK_TYPE_OBJECT, GTK_TYPE_DOUBLE, GTK_TYPE_DOUBLE);

    gtk_object_class_add_signals (object_class, e_printable_signals, LAST_SIGNAL);

    klass->print_page = NULL;    
    klass->data_left = NULL;
    klass->reset = NULL;
    klass->height = NULL;
}


guint
e_printable_get_type (void)
{
  static guint type = 0;

  if (!type)
    {
      GtkTypeInfo info =
      {
    "EPrintable",
    sizeof (EPrintable),
    sizeof (EPrintableClass),
    (GtkClassInitFunc) e_printable_class_init,
    NULL,
    /* reserved_1 */ NULL,
        /* reserved_2 */ NULL,
        (GtkClassInitFunc) NULL,
      };

      type = gtk_type_unique (gtk_object_get_type (), &info);
    }

  return type;
}

EPrintable *
e_printable_new(void)
{
    return E_PRINTABLE(gtk_type_new(e_printable_get_type()));
}

void
e_printable_print_page          (EPrintable        *e_printable,
                 GnomePrintContext *context,
                 gdouble            width,
                 gdouble            height,
                 gboolean           quantized)
{
    g_return_if_fail (e_printable != NULL);
    g_return_if_fail (E_IS_PRINTABLE (e_printable));
    
    gtk_signal_emit (GTK_OBJECT (e_printable),
             e_printable_signals [PRINT_PAGE],
             context,
             width,
             height,
             quantized);
}

gboolean
e_printable_data_left           (EPrintable        *e_printable)
{
        gboolean ret_val;

    g_return_val_if_fail (e_printable != NULL, FALSE);
    g_return_val_if_fail (E_IS_PRINTABLE (e_printable), FALSE);

    gtk_signal_emit (GTK_OBJECT (e_printable),
             e_printable_signals [DATA_LEFT],
             &ret_val);

    return ret_val;
}

void
e_printable_reset               (EPrintable        *e_printable)
{
    g_return_if_fail (e_printable != NULL);
    g_return_if_fail (E_IS_PRINTABLE (e_printable));
    
    gtk_signal_emit (GTK_OBJECT (e_printable),
             e_printable_signals [RESET]);
}

gdouble
e_printable_height              (EPrintable        *e_printable,
                 GnomePrintContext *context,
                 gdouble            width,
                 gdouble            max_height)
{
        gdouble ret_val;

    g_return_val_if_fail (e_printable != NULL, -1);
    g_return_val_if_fail (E_IS_PRINTABLE (e_printable), -1);

    gtk_signal_emit (GTK_OBJECT (e_printable),
             e_printable_signals [HEIGHT],
             context,
             width,
             max_height,
             &ret_val);

    return ret_val;
}