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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 <glib/gi18n.h>
  28 #include <gtk/gtk.h>
  29 #include <gtkmathview/gtkmathview.h>
  30
  31 #include "common/sylpheed.h"
  32 #include "common/version.h"
  33 #include "plugin.h"
  34 #include "utils.h"
  35 #include "mimeview.h"
  36
  37 typedef struct _MathMLViewer MathMLViewer;
  38
  39 struct _MathMLViewer
  40 {
  41         MimeViewer mimeviewer;
  42
  43         GtkScrolledWindow       *scrollwin;;
  44         GtkMathView             *mathview;
  45         gchar                   *filename;
  46 };
  47
  48 static MimeViewerFactory mathml_viewer_factory;
  49
  50 static GtkWidget *mathml_get_widget(MimeViewer *_viewer)
  51 {
  52         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  53
  54         debug_print("mathml_get_widget\n");
  55
  56         return GTK_WIDGET(viewer->scrollwin);
  57 }
  58
  59 static void mathml_show_mimepart(MimeViewer *_viewer, const gchar *infile, MimeInfo *partinfo)
  60 {
  61         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  62
  63         debug_print("mathml_show_mimepart\n");
  64
  65         if (viewer->filename != NULL) {
  66                 g_unlink(viewer->filename);
  67                 g_free(viewer->filename);
  68         }
  69
  70         viewer->filename = procmime_get_tmp_file_name(partinfo);
  71
  72         if (!(procmime_get_part(viewer->filename, partinfo) < 0)) {
  73                 gchar *uri;
  74
  75                 uri = g_strconcat("file://", viewer->filename, NULL);
  76                 gtk_math_view_load_uri(GTK_MATH_VIEW(viewer->mathview), uri);
  77                 g_free(uri);
  78         }
  79 }
  80
  81 static void mathml_clear_viewer(MimeViewer *_viewer)
  82 {
  83         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  84
  85         debug_print("mathml_clear_viewer\n");
  86
  87         gtk_math_view_unload(viewer->mathview);
  88 }
  89
  90 static void mathml_destroy_viewer(MimeViewer *_viewer)
  91 {
  92         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  93
  94         debug_print("mathml_destroy_viewer\n");
  95
  96         gtk_widget_unref(GTK_WIDGET(viewer->scrollwin));
  97         g_unlink(viewer->filename);
  98         g_free(viewer->filename);
  99         g_free(viewer);
 100 }
 101
 102 static MimeViewer *mathml_viewer_create(void)
 103 {
 104         MathMLViewer *viewer;
 105
 106         debug_print("mathml_viewer_create\n");
 107
 108         viewer = g_new0(MathMLViewer, 1);
 109         viewer->mimeviewer.factory = &mathml_viewer_factory;
 110
 111         viewer->mimeviewer.get_widget = mathml_get_widget;
 112         viewer->mimeviewer.show_mimepart = mathml_show_mimepart;
 113         viewer->mimeviewer.clear_viewer = mathml_clear_viewer;
 114         viewer->mimeviewer.destroy_viewer = mathml_destroy_viewer;
 115
 116         viewer->scrollwin = GTK_SCROLLED_WINDOW(gtk_scrolled_window_new(NULL, NULL));
 117         gtk_widget_show(GTK_WIDGET(viewer->scrollwin));
 118         gtk_widget_ref(GTK_WIDGET(viewer->scrollwin));
 119         gtk_scrolled_window_set_policy(viewer->scrollwin, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 120
 121         viewer->mathview = GTK_MATH_VIEW(gtk_math_view_new(NULL, NULL));
 122         gtk_widget_show(GTK_WIDGET(viewer->mathview));
 123         viewer->filename = NULL;
 124         gtk_container_add(GTK_CONTAINER(viewer->scrollwin), GTK_WIDGET(viewer->mathview));
 125
 126         return (MimeViewer *) viewer;
 127 }
 128
 129 static gchar *content_types[] =
 130         {"text/mathml", NULL};
 131
 132 static MimeViewerFactory mathml_viewer_factory =
 133 {
 134         content_types,
 135         0,
 136
 137         mathml_viewer_create,
 138 };
 139
 140 gint plugin_init(gchar **error)
 141 {
 142         if ((sylpheed_get_version() > VERSION_NUMERIC)) {
 143                 *error = g_strdup("Your version of Sylpheed-Claws is newer than the version the MathML plugin was built with");
 144                 return -1;
 145         }
 146
 147         if ((sylpheed_get_version() < MAKE_NUMERIC_VERSION(0, 9, 3, 86))) {
 148                 *error = g_strdup("Your version of Sylpheed-Claws is too old for the MathML plugin");
 149                 return -1;
 150         }
 151
 152         mimeview_register_viewer_factory(&mathml_viewer_factory);
 153         return 0;
 154 }
 155
 156 void plugin_done(void)
 157 {
 158         mimeview_unregister_viewer_factory(&mathml_viewer_factory);
 159 }
 160
 161 const gchar *plugin_name(void)
 162 {
 163         return _("MathML Viewer");
 164 }
 165
 166 const gchar *plugin_desc(void)
 167 {
 168         return _("This plugin uses the GtkMathView widget to render "
 169                  "MathML attachments (Content-Type: text/mathml)");
 170 }
 171
 172 const gchar *plugin_type(void)
 173 {
 174         return "GTK2";
 175 }