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 #include <unistd.h>
  21
  22 #include <glib.h>
  23 #include <gtk/gtk.h>
  24 #include <gtkmathview/gtkmathview.h>
  25
  26 #include "common/plugin.h"
  27 #include "common/utils.h"
  28 #include "mimeview.h"
  29
  30 typedef struct _MathMLViewer MathMLViewer;
  31
  32 struct _MathMLViewer
  33 {
  34         MimeViewer mimeviewer;
  35
  36         GtkScrolledWindow       *scrollwin;;
  37         GtkMathView             *mathview;
  38         gchar                   *filename;
  39 };
  40
  41 static MimeViewerFactory mathml_viewer_factory;
  42
  43 static GtkWidget *mathml_get_widget(MimeViewer *_viewer)
  44 {
  45         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  46
  47         debug_print("mathml_get_widget\n");
  48
  49         return GTK_WIDGET(viewer->scrollwin);
  50 }
  51
  52 static void mathml_show_mimepart(MimeViewer *_viewer, const gchar *infile, MimeInfo *partinfo)
  53 {
  54         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  55
  56         debug_print("mathml_show_mimepart\n");
  57
  58         if (viewer->filename != NULL) {
  59                 unlink(viewer->filename);
  60                 g_free(viewer->filename);
  61         }
  62
  63         viewer->filename = procmime_get_tmp_file_name(partinfo);
  64
  65         if (!(procmime_get_part(viewer->filename, infile, partinfo) < 0)) {
  66                 gchar *uri;
  67
  68                 uri = g_strconcat("file://", viewer->filename, NULL);
  69                 gtk_math_view_load_uri(GTK_MATH_VIEW(viewer->mathview), uri);
  70                 g_free(uri);
  71         }
  72 }
  73
  74 static void mathml_clear_viewer(MimeViewer *_viewer)
  75 {
  76         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  77
  78         debug_print("mathml_clear_viewer\n");
  79
  80         gtk_math_view_unload(viewer->mathview);
  81 }
  82
  83 static void mathml_destroy_viewer(MimeViewer *_viewer)
  84 {
  85         MathMLViewer *viewer = (MathMLViewer *) _viewer;
  86
  87         debug_print("mathml_destroy_viewer\n");
  88
  89         gtk_widget_unref(GTK_WIDGET(viewer->scrollwin));
  90         unlink(viewer->filename);
  91         g_free(viewer->filename);
  92         g_free(viewer);
  93 }
  94
  95 static MimeViewer *mathml_viewer_create()
  96 {
  97         MathMLViewer *viewer;
  98
  99         debug_print("mathml_viewer_create\n");
 100
 101         viewer = g_new0(MathMLViewer, 1);
 102         viewer->mimeviewer.factory = &mathml_viewer_factory;
 103
 104         viewer->mimeviewer.get_widget = mathml_get_widget;
 105         viewer->mimeviewer.show_mimepart = mathml_show_mimepart;
 106         viewer->mimeviewer.clear_viewer = mathml_clear_viewer;
 107         viewer->mimeviewer.destroy_viewer = mathml_destroy_viewer;
 108
 109         viewer->scrollwin = GTK_SCROLLED_WINDOW(gtk_scrolled_window_new(NULL, NULL));
 110         gtk_widget_show(GTK_WIDGET(viewer->scrollwin));
 111         gtk_widget_ref(GTK_WIDGET(viewer->scrollwin));
 112         gtk_scrolled_window_set_policy(viewer->scrollwin, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 113
 114         viewer->mathview = GTK_MATH_VIEW(gtk_math_view_new(NULL, NULL));
 115         gtk_widget_show(GTK_WIDGET(viewer->mathview));
 116         viewer->filename = NULL;
 117         gtk_container_add(GTK_CONTAINER(viewer->scrollwin), GTK_WIDGET(viewer->mathview));
 118
 119         return (MimeViewer *) viewer;
 120 }
 121
 122 static MimeViewerFactory mathml_viewer_factory =
 123 {
 124         "text/mathml",
 125         0,
 126
 127         mathml_viewer_create,
 128 };
 129
 130 gint plugin_init(gchar **error)
 131 {
 132         mimeview_register_viewer_factory(&mathml_viewer_factory);
 133         return 0;
 134 }
 135
 136 void plugin_done()
 137 {
 138         mimeview_unregister_viewer_factory(&mathml_viewer_factory);
 139 }
 140
 141 const gchar *plugin_name()
 142 {
 143         return "MathML Viewer";
 144 }
 145
 146 const gchar *plugin_desc()
 147 {
 148         return "";
 149 }
 150
 151 const gchar *plugin_type()
 152 {
 153         return "GTK";
 154 }