diff options
Diffstat (limited to 'libdocument/ev-document-factory.c')
| -rw-r--r-- | libdocument/ev-document-factory.c | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/libdocument/ev-document-factory.c b/libdocument/ev-document-factory.c new file mode 100644 index 0000000..348cb80 --- /dev/null +++ b/libdocument/ev-document-factory.c @@ -0,0 +1,463 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* + * Copyright (C) 2005, Red Hat, Inc. + * + * 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "ev-document-factory.h" + +/* The various document type backends: */ +#ifdef ENABLE_PDF +#include "ev-poppler.h" +#endif +#ifdef ENABLE_PS +#include "ps-document.h" +#endif +#ifdef ENABLE_TIFF +#include "tiff-document.h" +#endif +#ifdef ENABLE_DVI +#include "dvi-document.h" +#endif +#ifdef ENABLE_PIXBUF +#include "pixbuf-document.h" +#endif +#ifdef ENABLE_DJVU +#include "djvu-document.h" +#endif +#ifdef ENABLE_COMICS +#include "comics-document.h" +#endif +#ifdef ENABLE_IMPRESS +#include "impress-document.h" +#endif + +#include <string.h> +#include <glib/gi18n.h> +#include <libgnomevfs/gnome-vfs-mime-utils.h> +#include <libgnomevfs/gnome-vfs-file-info.h> +#include <libgnomevfs/gnome-vfs-ops.h> +#include <gtk/gtkfilechooserdialog.h> + +typedef struct _EvDocumentType EvDocumentType; +struct _EvDocumentType +{ + const char *mime_type; + EvBackend backend; + GType (*document_type_factory_callback)(); +}; + +const EvDocumentType document_types[] = { +#ifdef ENABLE_PDF + /* PDF: */ + {"application/pdf", EV_BACKEND_PDF, pdf_document_get_type}, +#endif + +#ifdef ENABLE_PS + /* Postscript: */ + {"application/postscript", EV_BACKEND_PS, ps_document_get_type}, + {"application/x-gzpostscript", EV_BACKEND_PS, ps_document_get_type}, + {"image/x-eps", EV_BACKEND_PS, ps_document_get_type}, +#endif + +#ifdef ENABLE_TIFF + /* Tiff: */ + {"image/tiff", EV_BACKEND_TIFF, tiff_document_get_type}, +#endif + +#ifdef ENABLE_DJVU + /* djvu: */ + {"image/vnd.djvu", EV_BACKEND_DJVU, djvu_document_get_type}, +#endif + +#ifdef ENABLE_DVI + /* dvi: */ + {"application/x-dvi", EV_BACKEND_DVI, dvi_document_get_type}, +#endif + +#ifdef ENABLE_COMICS + /* cbr/cbz: */ + {"application/x-cbr", EV_BACKEND_COMICS, comics_document_get_type}, + {"application/x-cbz", EV_BACKEND_COMICS, comics_document_get_type}, +#endif + +#ifdef ENABLE_IMPRESS + /* Impress slides: */ + {"application/vnd.sun.xml.impress", EV_BACKEND_IMPRESS, impress_document_get_type}, + {"application/vnd.oasis.opendocument.presentation", EV_BACKEND_IMPRESS, impress_document_get_type}, +#endif + +}; + +#ifdef ENABLE_PIXBUF + +static GList* +gdk_pixbuf_mime_type_list () +{ + GSList *formats, *list; + GList *result; + + formats = gdk_pixbuf_get_formats (); + result = NULL; + + for (list = formats; list != NULL; list = list->next) { + GdkPixbufFormat *format = list->data; + int i; + gchar **mime_types; + + if (gdk_pixbuf_format_is_disabled (format)) + continue; + + mime_types = gdk_pixbuf_format_get_mime_types (format); + + for (i = 0; mime_types[i] != NULL; i++) { + result = g_list_append (result, mime_types[i]); + } + } + g_slist_free (formats); + + return result; +} + +/* Would be nice to have this in gdk-pixbuf */ +static gboolean +mime_type_supported_by_gdk_pixbuf (const gchar *mime_type) +{ + GList *mime_types; + GList *list; + gboolean retval = FALSE; + + mime_types = gdk_pixbuf_mime_type_list (); + for (list = mime_types; list; list = list->next) { + if (strcmp ((char *)list->data, mime_type) == 0) { + retval = TRUE; + break; + } + } + + g_list_foreach (mime_types, (GFunc)g_free, NULL); + g_list_free (mime_types); + + return retval; +} +#endif + +static EvDocument* +ev_document_factory_get_from_mime (const char *mime_type) +{ + int i; + GType type = G_TYPE_INVALID; + EvDocument *document = NULL; + + g_return_val_if_fail (mime_type, G_TYPE_INVALID); + + for (i = 0; i < G_N_ELEMENTS (document_types); i++) { + if (strcmp (mime_type, document_types[i].mime_type) == 0) { + g_assert (document_types[i].document_type_factory_callback != NULL); + type = document_types[i].document_type_factory_callback(); + break; + } + } +#ifdef ENABLE_PIXBUF + if (type == G_TYPE_INVALID && mime_type_supported_by_gdk_pixbuf (mime_type)) { + type = pixbuf_document_get_type (); + } +#endif + if (type != G_TYPE_INVALID) { + document = g_object_new (type, NULL); + } + + return document; +} + +EvBackend +ev_document_factory_get_backend (EvDocument *document) +{ + int i; + + for (i = 0; i < G_N_ELEMENTS (document_types); i++) { + GType type = document_types[i].document_type_factory_callback (); + if (type == G_TYPE_FROM_INSTANCE (document)) { + return document_types[i].backend; + } + } + +#ifdef ENABLE_PIXBUF + if (G_TYPE_FROM_INSTANCE (document) == pixbuf_document_get_type ()) + return EV_BACKEND_PIXBUF; +#endif + g_assert_not_reached (); + + return 0; +} + +static GList * +ev_document_factory_get_mime_types (EvBackend backend) +{ + GList *types = NULL; + int i; + +#ifdef ENABLE_PIXBUF + if (backend == EV_BACKEND_PIXBUF) { + return gdk_pixbuf_mime_type_list (); + } +#endif + + for (i = 0; i < G_N_ELEMENTS (document_types); i++) { + if (document_types[i].backend == backend) { + types = g_list_append (types, g_strdup (document_types[i].mime_type)); + } + } + + return types; +} + +static GList * +ev_document_factory_get_all_mime_types (void) +{ + GList *types = NULL; + int i; + + for (i = 0; i < G_N_ELEMENTS (document_types); i++) { + types = g_list_append (types, g_strdup (document_types[i].mime_type)); + } + +#ifdef ENABLE_PIXBUF + types = g_list_concat (types, gdk_pixbuf_mime_type_list ()); +#endif + + return types; +} + +static EvDocument * +get_document_from_uri (const char *uri, gboolean slow, GError **error) +{ + EvDocument *document = NULL; + + GnomeVFSFileInfo *info; + GnomeVFSResult result; + + info = gnome_vfs_file_info_new (); + result = gnome_vfs_get_file_info (uri, info, + GNOME_VFS_FILE_INFO_GET_MIME_TYPE | + GNOME_VFS_FILE_INFO_FOLLOW_LINKS | + (slow ? GNOME_VFS_FILE_INFO_FORCE_SLOW_MIME_TYPE : 0)); + if (result != GNOME_VFS_OK) { + g_set_error (error, + EV_DOCUMENT_ERROR, + 0, + gnome_vfs_result_to_string (result)); + gnome_vfs_file_info_unref (info); + return NULL; + } + + if (info->mime_type == NULL) { + g_set_error (error, + EV_DOCUMENT_ERROR, + 0, + _("Unknown MIME Type")); + gnome_vfs_file_info_unref (info); + return NULL; + } + + document = ev_document_factory_get_from_mime (info->mime_type); + + if (document == NULL) { + g_set_error (error, + EV_DOCUMENT_ERROR, + 0, + _("Unhandled MIME type: “%s”"), info->mime_type); + gnome_vfs_file_info_unref (info); + return NULL; + } + + gnome_vfs_file_info_unref (info); + + return document; +} + +EvDocument * +ev_document_factory_get_document (const char *uri, GError **error) +{ + EvDocument *document; + int result; + + document = get_document_from_uri (uri, FALSE, error); + + if (*error == NULL) { + result = ev_document_load (document, uri, error); + + if (result == FALSE || *error) { + if (*error && + (*error)->domain == EV_DOCUMENT_ERROR && + (*error)->code == EV_DOCUMENT_ERROR_ENCRYPTED) + return document; + } else { + return document; + } + } + + /* Try again with slow mime detection */ + if (document) + g_object_unref (document); + document = NULL; + + if (*error) + g_error_free (*error); + *error = NULL; + + document = get_document_from_uri (uri, TRUE, error); + + if (*error != NULL) { + return NULL; + } + + result = ev_document_load (document, uri, error); + + if (result == FALSE) { + if (*error == NULL) { + g_set_error (error, + EV_DOCUMENT_ERROR, + 0, + _("Unknown MIME Type")); + } else if ((*error)->domain == EV_DOCUMENT_ERROR && + (*error)->code == EV_DOCUMENT_ERROR_ENCRYPTED) { + return document; + } + + if (document) + g_object_unref (document); + document = NULL; + } + + return document; +} + +static void +file_filter_add_mime_list_and_free (GtkFileFilter *filter, GList *mime_types) +{ + GList *l; + + for (l = mime_types; l != NULL; l = l->next) { + gtk_file_filter_add_mime_type (filter, l->data); + } + + g_list_foreach (mime_types, (GFunc)g_free, NULL); + g_list_free (mime_types); +} + +void +ev_document_factory_add_filters (GtkWidget *chooser, EvDocument *document) +{ + EvBackend backend = 0; + GList *mime_types; + GtkFileFilter *filter; + GtkFileFilter *default_filter; + GtkFileFilter *document_filter; + + if (document != NULL) { + backend = ev_document_factory_get_backend (document); + } + + default_filter = document_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("All Documents")); + mime_types = ev_document_factory_get_all_mime_types (); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + +#ifdef ENABLE_PS + if (document == NULL || backend == EV_BACKEND_PS) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("PostScript Documents")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_PS); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + +#ifdef ENABLE_PDF + if (document == NULL || backend == EV_BACKEND_PDF) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("PDF Documents")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_PDF); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + +#ifdef ENABLE_PIXBUF + if (document == NULL || backend == EV_BACKEND_PIXBUF) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("Images")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_PIXBUF); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + +#ifdef ENABLE_DVI + if (document == NULL || backend == EV_BACKEND_DVI) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("DVI Documents")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_DVI); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + +#ifdef ENABLE_DJVU + if (document == NULL || backend == EV_BACKEND_DJVU) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("Djvu Documents")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_DJVU); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + +#ifdef ENABLE_COMICS + if (document == NULL || backend == EV_BACKEND_COMICS) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("Comic Books")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_COMICS); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + +#ifdef ENABLE_IMPRESS + if (document == NULL || backend == EV_BACKEND_IMPRESS) { + default_filter = filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("Impress Slides")); + mime_types = ev_document_factory_get_mime_types (EV_BACKEND_IMPRESS); + file_filter_add_mime_list_and_free (filter, mime_types); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + } +#endif + + filter = gtk_file_filter_new (); + gtk_file_filter_set_name (filter, _("All Files")); + gtk_file_filter_add_pattern (filter, "*"); + gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter); + + gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), + document == NULL ? document_filter : default_filter); +} |