[evince] pdf: Add support for Movie annotations

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 27fb39dff79aadd2d86f88cbc0cde36b7a9aded0
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Wed May 27 13:01:27 2015 +0200

    pdf: Add support for Movie annotations
    
    Like links and form widgets, movies are not considered as annotations by
    Evince, but media elements to show in the page.

 backend/pdf/ev-poppler.cc |  125 ++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 124 insertions(+), 1 deletions(-)
---
diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc
index 3bd2a4b..a9765aa 100644
--- a/backend/pdf/ev-poppler.cc
+++ b/backend/pdf/ev-poppler.cc
@@ -46,6 +46,7 @@
 #include "ev-document-transition.h"
 #include "ev-document-forms.h"
 #include "ev-document-layers.h"
+#include "ev-document-media.h"
 #include "ev-document-print.h"
 #include "ev-document-annotations.h"
 #include "ev-document-attachments.h"
@@ -54,6 +55,7 @@
 #include "ev-transition-effect.h"
 #include "ev-attachment.h"
 #include "ev-image.h"
+#include "ev-media.h"
 
 #include <libxml/tree.h>
 #include <libxml/parser.h>
@@ -122,6 +124,7 @@ static void pdf_document_document_layers_iface_init      (EvDocumentLayersInterf
 static void pdf_document_document_print_iface_init       (EvDocumentPrintInterface       *iface);
 static void pdf_document_document_annotations_iface_init (EvDocumentAnnotationsInterface *iface);
 static void pdf_document_document_attachments_iface_init (EvDocumentAttachmentsInterface *iface);
+static void pdf_document_document_media_iface_init       (EvDocumentMediaInterface       *iface);
 static void pdf_document_find_iface_init                 (EvDocumentFindInterface        *iface);
 static void pdf_document_file_exporter_iface_init        (EvFileExporterInterface        *iface);
 static void pdf_selection_iface_init                     (EvSelectionInterface           *iface);
@@ -159,6 +162,8 @@ EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document,
                                                                 
pdf_document_document_annotations_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ATTACHMENTS,
                                                                 
pdf_document_document_attachments_iface_init);
+                                EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_MEDIA,
+                                                                pdf_document_document_media_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
                                                                 pdf_document_find_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
@@ -2907,7 +2912,8 @@ ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot,
                        break;
                case POPPLER_ANNOT_LINK:
                case POPPLER_ANNOT_WIDGET:
-                       /* Ignore link and widgets annots since they are already handled */
+               case POPPLER_ANNOT_MOVIE:
+                       /* Ignore link, widgets and movie annots since they are already handled */
                        break;
                case POPPLER_ANNOT_3D:
                case POPPLER_ANNOT_CARET:
@@ -3446,6 +3452,123 @@ pdf_document_document_annotations_iface_init (EvDocumentAnnotationsInterface *if
        iface->remove_annotation = pdf_document_annotations_remove_annotation;
 }
 
+/* Media */
+static GFile *
+get_media_file (const gchar *filename,
+               EvDocument  *document)
+{
+       GFile *file;
+
+       if (g_path_is_absolute (filename)) {
+               file = g_file_new_for_path (filename);
+       } else if (g_strrstr (filename, "://")) {
+               file = g_file_new_for_uri (filename);
+       } else {
+               gchar *doc_path;
+               gchar *path;
+               gchar *base_dir;
+
+               doc_path = g_filename_from_uri (ev_document_get_uri (document), NULL, NULL);
+               base_dir = g_path_get_dirname (doc_path);
+               g_free (doc_path);
+
+               path = g_build_filename (base_dir, filename, NULL);
+               g_free (base_dir);
+
+               file = g_file_new_for_path (path);
+               g_free (path);
+       }
+
+       return file;
+}
+
+static EvMedia *
+ev_media_from_poppler_movie (EvDocument   *document,
+                            EvPage       *page,
+                            PopplerMovie *movie)
+{
+       EvMedia     *media;
+       GFile       *file;
+       gchar       *uri;
+
+       file = get_media_file (poppler_movie_get_filename (movie), document);
+       uri = g_file_get_uri (file);
+       g_object_unref (file);
+
+       media = ev_media_new_for_uri (page, uri);
+       g_free (uri);
+       ev_media_set_show_controls (media, poppler_movie_show_controls (movie));
+
+       return media;
+}
+
+static EvMappingList *
+pdf_document_media_get_media_mapping (EvDocumentMedia *document_media,
+                                     EvPage          *page)
+{
+       GList *retval = NULL;
+       PdfDocument *pdf_document;
+       PopplerPage *poppler_page;
+       EvMappingList *mapping_list;
+       GList *annots;
+       GList *list;
+       gdouble height;
+       gint i = 0;
+
+       pdf_document = PDF_DOCUMENT (document_media);
+       poppler_page = POPPLER_PAGE (page->backend_page);
+
+       annots = poppler_page_get_annot_mapping (poppler_page);
+       poppler_page_get_size (poppler_page, NULL, &height);
+
+       for (list = annots; list; list = list->next) {
+               PopplerAnnotMapping *mapping;
+               EvMapping           *media_mapping;
+               EvMedia             *media = NULL;
+
+               mapping = (PopplerAnnotMapping *)list->data;
+
+               switch (poppler_annot_get_annot_type (mapping->annot)) {
+               case POPPLER_ANNOT_MOVIE: {
+                       PopplerAnnotMovie *poppler_annot;
+
+                       poppler_annot = POPPLER_ANNOT_MOVIE (mapping->annot);
+                       media = ev_media_from_poppler_movie (EV_DOCUMENT (pdf_document), page,
+                                                            poppler_annot_movie_get_movie (poppler_annot));
+               }
+                       break;
+               default:
+                       break;
+               }
+
+               if (!media)
+                       continue;
+
+               media_mapping = g_new (EvMapping, 1);
+
+               media_mapping->data = media;
+               media_mapping->area.x1 = mapping->area.x1;
+               media_mapping->area.x2 = mapping->area.x2;
+               media_mapping->area.y1 = height - mapping->area.y2;
+               media_mapping->area.y2 = height - mapping->area.y1;
+
+               retval = g_list_prepend (retval, media_mapping);
+       }
+
+       poppler_page_free_annot_mapping (annots);
+
+       if (!retval)
+               return NULL;
+
+       return ev_mapping_list_new (page->index, g_list_reverse (retval), (GDestroyNotify)g_object_unref);
+}
+
+static void
+pdf_document_document_media_iface_init (EvDocumentMediaInterface *iface)
+{
+       iface->get_media_mapping = pdf_document_media_get_media_mapping;
+}
+
 /* Attachments */
 struct SaveToBufferData {
        gchar *buffer;