src/plugins/mathml_viewer/mathml_viewer.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto and the Sylpheed-Claws Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <unistd.h>
  25
  26 #include <glib.h>
  27 #include <gtk/gtk.h>
  28 #include <gtkmathview/gtkmathview.h>
  29
  30 #include "plugin.h"
  31 #include "utils.h"
  32 #include "intl.h"
  33 #include "mimeview.h"
  34
  35 typedef struct _MathMLViewer MathMLViewer;
  36
  37 struct _MathMLViewer
  38 {
  39         MimeViewer mimeviewer;
  40
  41         GtkScrolledWindow       *scrollwin;;
  42         GtkMathView             *mathview;
  43         gchar                   *filename;
  44 };
  45
  46 static MimeViewerFactory mathml_viewer_factory;
  47
  48 static GtkWidget *mathml_get_widget(MimeViewer *_viewer)
  49 {
  50         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  51
  52         debug_print("mathml_get_widget\n");
  53
  54         return GTK_WIDGET(viewer->scrollwin);
  55 }
  56
  57 static void mathml_show_mimepart(MimeViewer *_viewer, const gchar *infile, MimeInfo *partinfo)
  58 {
  59         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  60
  61         debug_print("mathml_show_mimepart\n");
  62
  63         if (viewer->filename != NULL) {
  64                 unlink(viewer->filename);
  65                 g_free(viewer->filename);
  66         }
  67
  68         viewer->filename = procmime_get_tmp_file_name(partinfo);
  69
  70         if (!(procmime_get_part(viewer->filename, infile, partinfo) < 0)) {
  71                 gchar *uri;
  72
  73                 uri = g_strconcat("file://", viewer->filename, NULL);
  74                 gtk_math_view_load_uri(GTK_MATH_VIEW(viewer->mathview), uri);
  75                 g_free(uri);
  76         }
  77 }
  78
  79 static void mathml_clear_viewer(MimeViewer *_viewer)
  80 {
  81         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  82
  83         debug_print("mathml_clear_viewer\n");
  84
  85         gtk_math_view_unload(viewer->mathview);
  86 }
  87
  88 static void mathml_destroy_viewer(MimeViewer *_viewer)
  89 {
  90         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  91
  92         debug_print("mathml_destroy_viewer\n");
  93
  94         gtk_widget_unref(GTK_WIDGET(viewer->scrollwin));
  95         unlink(viewer->filename);
  96         g_free(viewer->filename);
  97         g_free(viewer);
  98 }
  99
 100 static MimeViewer *mathml_viewer_create(void)
 101 {
 102         MathMLViewer *viewer;
 103
 104         debug_print("mathml_viewer_create\n");
 105
 106         viewer = g_new0(MathMLViewer, 1);
 107         viewer->mimeviewer.factory = &mathml_viewer_factory;
 108
 109         viewer->mimeviewer.get_widget = mathml_get_widget;
 110         viewer->mimeviewer.show_mimepart = mathml_show_mimepart;
 111         viewer->mimeviewer.clear_viewer = mathml_clear_viewer;
 112         viewer->mimeviewer.destroy_viewer = mathml_destroy_viewer;
 113
 114         viewer->scrollwin = GTK_SCROLLED_WINDOW(gtk_scrolled_window_new(NULL, NULL));
 115         gtk_widget_show(GTK_WIDGET(viewer->scrollwin));
 116         gtk_widget_ref(GTK_WIDGET(viewer->scrollwin));
 117         gtk_scrolled_window_set_policy(viewer->scrollwin, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 118
 119         viewer->mathview = GTK_MATH_VIEW(gtk_math_view_new(NULL, NULL));
 120         gtk_widget_show(GTK_WIDGET(viewer->mathview));
 121         viewer->filename = NULL;
 122         gtk_container_add(GTK_CONTAINER(viewer->scrollwin), GTK_WIDGET(viewer->mathview));
 123
 124         return (MimeViewer *) viewer;
 125 }
 126
 127 static MimeViewerFactory mathml_viewer_factory =
 128 {
 129         "text/mathml",
 130         0,
 131
 132         mathml_viewer_create,
 133 };
 134
 135 gint plugin_init(gchar **error)
 136 {
 137         mimeview_register_viewer_factory(&mathml_viewer_factory);
 138         return 0;
 139 }
 140
 141 void plugin_done(void)
 142 {
 143         mimeview_unregister_viewer_factory(&mathml_viewer_factory);
 144 }
 145
 146 const gchar *plugin_name(void)
 147 {
 148         return _("MathML Viewer");
 149 }
 150
 151 const gchar *plugin_desc(void)
 152 {
 153         return _("This plugin uses the GtkMathView widget to render "
 154                  "MathML attachments (Content-Type: text/mathml)");
 155 }
 156
 157 const gchar *plugin_type(void)
 158 {
 159         return "GTK";
 160 }