path: root/mail/em-format-html-print.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 *  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; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */


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

#include <string.h>
#include <gtk/gtk.h>
#include <gtkhtml/gtkhtml.h>

#include <camel/camel-i18n.h>
#include "mail-ops.h"
#include "mail-mt.h"
#include "em-format-html-print.h"
#include <e-util/e-print.h>

static gpointer parent_class = NULL;

static void
efhp_finalize (GObject *o)
{
    EMFormatHTMLPrint *efhp = (EMFormatHTMLPrint *)o;

    gtk_widget_destroy (efhp->window);
    if (efhp->source != NULL)
        g_object_unref (efhp->source);

    ((GObjectClass *) parent_class)->finalize (o);
}

static void
efhp_class_init (GObjectClass *class)
{
    parent_class = g_type_class_ref(EM_TYPE_FORMAT_HTML_PRINT);
    class->finalize = efhp_finalize;
}

static void
efhp_init (GObject *o)
{
    EMFormatHTMLPrint *efhp = (EMFormatHTMLPrint *)o;
    GtkWidget *html = (GtkWidget *)efhp->parent.html;

    /* ?? */
    gtk_widget_set_name(html, "EvolutionMailPrintHTMLWidget");

    /* gtk widgets don't like to be realized outside top level widget
       so we put new html widget into gtk window */
    efhp->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_container_add (GTK_CONTAINER (efhp->window), html);
    gtk_widget_realize (html);
    efhp->parent.show_icon = FALSE;
}

GType
em_format_html_print_get_type (void)
{
    static GType type = 0;

    if (G_UNLIKELY (type == 0)) {
        static const GTypeInfo type_info = {
            sizeof (EMFormatHTMLPrintClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) efhp_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,  /* class_data */
            sizeof (EMFormatHTMLPrint),
            0,     /* n_preallocs */
            (GInstanceInitFunc) efhp_init
        };

        type = g_type_register_static (
            em_format_html_get_type (), "EMFormatHTMLPrint",
            &type_info, 0);
    }

    return type;
}

EMFormatHTMLPrint *
em_format_html_print_new (EMFormatHTML *source, GtkPrintOperationAction action)
{
    EMFormatHTMLPrint *efhp;

    efhp = g_object_new (EM_TYPE_FORMAT_HTML_PRINT, NULL);
    if (source != NULL)
        efhp->source = g_object_ref (source);
    efhp->action = action;

    return efhp;
}

static gint
efhp_calc_footer_height (GtkHTML *html,
                         GtkPrintOperation *operation,
                         GtkPrintContext *context)
{
    PangoContext *pango_context;
    PangoFontDescription *desc;
    PangoFontMetrics *metrics;
    gint footer_height;

    pango_context = gtk_print_context_create_pango_context (context);
    desc = pango_font_description_from_string ("Sans Regular 10");

    metrics = pango_context_get_metrics (
        pango_context, desc, pango_language_get_default ());
    footer_height =
        pango_font_metrics_get_ascent (metrics) +
        pango_font_metrics_get_descent (metrics);
    pango_font_metrics_unref (metrics);

    pango_font_description_free (desc);
    g_object_unref (pango_context);

    return footer_height;
}

static void
efhp_draw_footer (GtkHTML *html,
                  GtkPrintOperation *operation,
                  GtkPrintContext *context,
                  gint page_nr,
                  PangoRectangle *rec)
{
    PangoFontDescription *desc;
    PangoLayout *layout;
    gdouble x, y;
    gint n_pages;
    gchar *text;
    cairo_t *cr;

    g_object_get (operation, "n-pages", &n_pages, NULL);
    text = g_strdup_printf (_("Page %d of %d"), page_nr + 1, n_pages);

    desc = pango_font_description_from_string ("Sans Regular 10");
    layout = gtk_print_context_create_pango_layout (context);
    pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
    pango_layout_set_font_description (layout, desc);
    pango_layout_set_text (layout, text, -1);
    pango_layout_set_width (layout, rec->width);

    x = pango_units_to_double (rec->x);
    y = pango_units_to_double (rec->y);

    cr = gtk_print_context_get_cairo_context (context);

    cairo_save (cr);
    cairo_set_source_rgb (cr, .0, .0, .0);
    cairo_move_to (cr, x, y);
    pango_cairo_show_layout (cr, layout);
    cairo_restore (cr);

    g_object_unref (layout);
    pango_font_description_free (desc);

    g_free (text);
}

static void
emfhp_complete (EMFormatHTMLPrint *efhp)
{
    GtkPrintOperation *operation;
    GError *error = NULL;

    operation = e_print_operation_new ();

    gtk_html_print_operation_run (
        efhp->parent.html, operation, efhp->action, NULL,
        (GtkHTMLPrintCalcHeight) NULL,
        (GtkHTMLPrintCalcHeight) efhp_calc_footer_height,
        (GtkHTMLPrintDrawFunc) NULL,
        (GtkHTMLPrintDrawFunc) efhp_draw_footer,
        NULL, &error);

    g_object_unref (operation);
}

static void
emfhp_got_message (CamelFolder *folder, const char *uid,
                   CamelMimeMessage *msg, gpointer data)
{
    EMFormatHTMLPrint *efhp = data;

    if (msg == NULL) {
        g_object_unref (efhp);
        return;
    }

    if (efhp->source != NULL)
        ((EMFormatHTML *)efhp)->load_http =
            efhp->source->load_http_now;

    g_signal_connect (
        efhp, "complete", G_CALLBACK (emfhp_complete), efhp);
    em_format_format_clone (
        (EMFormat *) efhp, folder, uid, msg,
        (EMFormat *) efhp->source);
}

void
em_format_html_print_message (EMFormatHTMLPrint *efhp,
                              CamelFolder *folder,
                              const char *uid)
{
    g_object_ref (efhp);

    mail_get_message (
        folder, uid, emfhp_got_message, efhp, mail_msg_unordered_push);
}

void
em_format_html_print_raw_message (EMFormatHTMLPrint *efhp,
                                  CamelMimeMessage *msg)
{
    g_object_ref (efhp);

    emfhp_got_message (NULL, NULL, msg, efhp);
}