diff options
Diffstat (limited to 'backend')
| -rw-r--r-- | backend/Makefile.am | 8 | ||||
| -rw-r--r-- | backend/ev-document-factory.c | 191 | ||||
| -rw-r--r-- | backend/ev-document-factory.h | 44 |
3 files changed, 243 insertions, 0 deletions
diff --git a/backend/Makefile.am b/backend/Makefile.am index 8ce117d..3597186 100644 --- a/backend/Makefile.am +++ b/backend/Makefile.am @@ -3,6 +3,12 @@ NULL= INCLUDES= \ -DEVINCE_UIDIR=\"$(pkgdatadir)\" \ -DGNOMELOCALEDIR=\"$(datadir)/locale\" \ + -I$(top_srcdir)/pdf \ + -I$(top_srcdir)/pixbuf \ + -I$(top_srcdir)/tiff \ + -I$(top_srcdir)/ps \ + -I$(top_srcdir)/djvu \ + -I$(top_srcdir)/dvi \ $(SHELL_CFLAGS) \ $(EVINCE_DISABLE_DEPRECATED) \ $(NULL) @@ -17,6 +23,8 @@ libevbackend_la_SOURCES= \ ev-link.h \ ev-document.c \ ev-document.h \ + ev-document-factory.c \ + ev-document-factory.h \ ev-document-thumbnails.c \ ev-document-thumbnails.h \ ev-document-fonts.c \ diff --git a/backend/ev-document-factory.c b/backend/ev-document-factory.c new file mode 100644 index 0000000..251ede3 --- /dev/null +++ b/backend/ev-document-factory.c @@ -0,0 +1,191 @@ +/* -*- 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: */ +#include "ev-poppler.h" +#include "pixbuf-document.h" +#include "tiff-document.h" +#include "ps-document.h" +#ifdef ENABLE_DVI +#include "dvi-document.h" +#endif +#ifdef ENABLE_DJVU +#include "djvu-document.h" +#endif + +#include <string.h> + +typedef struct _EvDocumentType EvDocumentType; +struct _EvDocumentType +{ + const char *mime_type; + EvBackend backend; + GType (*document_type_factory_callback)(); +}; + +const EvDocumentType document_types[] = { + /* PDF: */ + {"application/pdf", EV_BACKEND_PDF, pdf_document_get_type}, + + /* 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}, + +#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 +}; + +/* Would be nice to have this in gdk-pixbuf */ +static gboolean +mime_type_supported_by_gdk_pixbuf (const gchar *mime_type) +{ + GSList *formats, *list; + gboolean retval = FALSE; + + formats = gdk_pixbuf_get_formats (); + + list = formats; + while (list) { + 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++) { + if (strcmp (mime_types[i], mime_type) == 0) { + retval = TRUE; + break; + } + } + + if (retval) + break; + + list = list->next; + } + + g_slist_free (formats); + + return retval; +} + + +static GType +ev_document_type_get_from_mime (const char *mime_type) +{ + int i; + + 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); + return document_types[i].document_type_factory_callback(); + } + } + + if (mime_type_supported_by_gdk_pixbuf (mime_type)) { + return pixbuf_document_get_type (); + } + + return G_TYPE_INVALID; +} + +EvDocument * +ev_document_factory_get_document (const char *mime_type) +{ + GType type = G_TYPE_INVALID; + + type = ev_document_type_get_from_mime (mime_type); + + if (type != G_TYPE_NONE) { + return g_object_new (type, NULL); + } + + return NULL; +} + +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; + } + } + + g_assert_not_reached (); + + return 0; +} + +GList * +ev_document_factory_get_mime_types (EvBackend backend) +{ + GList *types = NULL; + int i; + + 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; +} + +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)); + } + + return types; +} diff --git a/backend/ev-document-factory.h b/backend/ev-document-factory.h new file mode 100644 index 0000000..56be46d --- /dev/null +++ b/backend/ev-document-factory.h @@ -0,0 +1,44 @@ +/* -*- 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. + * + */ + +#ifndef EV_DOCUMENT_FACTORY_H +#define EV_DOCUMENT_FACTORY_H + +#include "ev-document.h" + +G_BEGIN_DECLS + +typedef enum { + EV_BACKEND_PDF, + EV_BACKEND_PS, + EV_BACKEND_TIFF, + EV_BACKEND_PIXBUF, + EV_BACKEND_DJVU, + EV_BACKEND_DVI +} EvBackend; + +EvDocument *ev_document_factory_get_document (const char *mime_type); +EvBackend ev_document_factory_get_backend (EvDocument *document); +GList *ev_document_factory_get_mime_types (EvBackend backend); +GList *ev_document_factory_get_all_mime_types (void); + +G_END_DECLS + +#endif |