X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=libdocument%2Fev-document.c;h=9d2e259e41f71ee951727209f485620e38f7a973;hb=f81bd27d7ffd7cf619943b14cb928aaab6cc5944;hp=e9085bea5fd0b72d625ff22e9898f227baa99999;hpb=de80aca8f17266041664ab6dfdadf3ae0f14f1e1;p=evince.git diff --git a/libdocument/ev-document.c b/libdocument/ev-document.c index e9085bea..9d2e259e 100644 --- a/libdocument/ev-document.c +++ b/libdocument/ev-document.c @@ -1,5 +1,6 @@ /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* + * Copyright (C) 2009 Carlos Garcia Campos * Copyright (C) 2004 Marco Pesenti Gritti * * This program is free software; you can redistribute it and/or modify @@ -25,7 +26,7 @@ GMutex *ev_doc_mutex = NULL; GMutex *ev_fc_mutex = NULL; -EV_DEFINE_INTERFACE (EvDocument, ev_document, G_TYPE_OBJECT) +G_DEFINE_ABSTRACT_TYPE (EvDocument, ev_document, G_TYPE_OBJECT) GQuark ev_document_error_quark (void) @@ -37,11 +38,31 @@ ev_document_error_quark (void) return q; } +static EvPage * +ev_document_impl_get_page (EvDocument *document, + gint index) +{ + return ev_page_new (index); +} + +static EvDocumentInfo * +ev_document_impl_get_info (EvDocument *document) +{ + return g_new0 (EvDocumentInfo, 1); +} + static void -ev_document_class_init (EvDocumentIface *klass) +ev_document_init (EvDocument *document) { } +static void +ev_document_class_init (EvDocumentClass *klass) +{ + klass->get_page = ev_document_impl_get_page; + klass->get_info = ev_document_impl_get_info; +} + GMutex * ev_document_get_doc_mutex (void) { @@ -103,7 +124,13 @@ ev_document_fc_mutex_trylock (void) * @error: a #GError location to store an error, or %NULL * * Loads @document from @uri. - * On failure, @error is filled in. + * + * On failure, %FALSE is returned and @error is filled in. + * If the document is encrypted, EV_DEFINE_ERROR_ENCRYPTED is returned. + * If the backend cannot load the specific document, EV_DOCUMENT_ERROR_INVALID + * is returned. Other errors are possible too, depending on the backend + * used to load the document and the URI, e.g. #GIOError, #GFileError, and + * #GConvertError. * * Returns: %TRUE on success, or %FALSE on failure. */ @@ -112,51 +139,64 @@ ev_document_load (EvDocument *document, const char *uri, GError **error) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); gboolean retval; - - retval = iface->load (document, uri, error); + GError *err = NULL; + + retval = klass->load (document, uri, &err); + if (!retval) { + if (err) { + g_propagate_error (error, err); + } else { + g_warning ("%s::EvDocument::load returned FALSE but did not fill in @error; fix the backend!\n", + G_OBJECT_TYPE_NAME (document)); + + /* So upper layers don't crash */ + g_set_error_literal (error, + EV_DOCUMENT_ERROR, + EV_DOCUMENT_ERROR_INVALID, + "Internal error in backend"); + } + } return retval; } +/** + * ev_document_save: + * @document: + * @uri: the target URI + * @error: a #GError location to store an error, or %NULL + * + * Saves @document to @uri. + * + * Returns: %TRUE on success, or %FALSE on error with @error filled in + */ gboolean ev_document_save (EvDocument *document, const char *uri, GError **error) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); - gboolean retval; + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - retval = iface->save (document, uri, error); - - return retval; + return klass->save (document, uri, error); } int ev_document_get_n_pages (EvDocument *document) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); - gint retval; - - retval = iface->get_n_pages (document); + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - return retval; + return klass->get_n_pages (document); } EvPage * ev_document_get_page (EvDocument *document, gint index) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); - EvPage *retval; - - if (iface->get_page) - retval = iface->get_page (document, index); - else - retval = ev_page_new (index); + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - return retval; + return klass->get_page (document, index); } void @@ -165,67 +205,36 @@ ev_document_get_page_size (EvDocument *document, double *width, double *height) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - iface->get_page_size (document, page, width, height); + klass->get_page_size (document, page, width, height); } -char * +gchar * ev_document_get_page_label (EvDocument *document, EvPage *page) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - if (iface->get_page_label == NULL) - return NULL; - - return iface->get_page_label (document, page); + return klass->get_page_label ? + klass->get_page_label (document, page) : NULL; } EvDocumentInfo * ev_document_get_info (EvDocument *document) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); - - return iface->get_info (document); -} - -gboolean -ev_document_has_attachments (EvDocument *document) -{ - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - if (iface->has_attachments == NULL) - return FALSE; - - return iface->has_attachments (document); -} - -GList * -ev_document_get_attachments (EvDocument *document) -{ - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); - GList *retval; - - if (iface->get_attachments == NULL) - return NULL; - retval = iface->get_attachments (document); - - return retval; + return klass->get_info (document); } cairo_surface_t * ev_document_render (EvDocument *document, EvRenderContext *rc) { - EvDocumentIface *iface = EV_DOCUMENT_GET_IFACE (document); - cairo_surface_t *retval; + EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document); - g_assert (iface->render); - - retval = iface->render (document, rc); - - return retval; + return klass->render (document, rc); } /* EvDocumentInfo */ @@ -280,6 +289,33 @@ ev_document_info_free (EvDocumentInfo *info) g_free (info); } +/* EvRectangle */ +EV_DEFINE_BOXED_TYPE (EvRectangle, ev_rectangle, ev_rectangle_copy, ev_rectangle_free) + +EvRectangle * +ev_rectangle_new (void) +{ + return g_new0 (EvRectangle, 1); +} + +EvRectangle * +ev_rectangle_copy (EvRectangle *rectangle) +{ + EvRectangle *new_rectangle; + + g_return_val_if_fail (rectangle != NULL, NULL); + + new_rectangle = g_new (EvRectangle, 1); + *new_rectangle = *rectangle; + + return new_rectangle; +} + +void +ev_rectangle_free (EvRectangle *rectangle) +{ + g_free (rectangle); +} /* Compares two rects. returns 0 if they're equal */ #define EPSILON 0.0000001