[pdf] Implement annotations interface

diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc
index 70af88eb3d045c96347de82c2a0572dcf8410a62..4c16d22d4256679ea566cf66b5700e89a1555388 100644 (file)
--- a/backend/pdf/ev-poppler.cc
+++ b/backend/pdf/ev-poppler.cc
@@ -45,6 +45,7 @@
 #include "ev-document-transition.h"
 #include "ev-document-forms.h"
 #include "ev-document-layers.h"
+#include "ev-document-annotations.h"
 #include "ev-selection.h"
 #include "ev-transition-effect.h"
 #include "ev-attachment.h"
@@ -104,23 +105,24 @@ struct _PdfDocument
        GList *layers;
 };
 
-static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
-static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
-static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
-static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
-static void pdf_document_document_images_iface_init     (EvDocumentImagesIface     *iface);
-static void pdf_document_document_forms_iface_init      (EvDocumentFormsIface      *iface);
-static void pdf_document_document_fonts_iface_init      (EvDocumentFontsIface      *iface);
-static void pdf_document_document_layers_iface_init     (EvDocumentLayersIface     *iface);
-static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
-static void pdf_document_file_exporter_iface_init       (EvFileExporterIface       *iface);
-static void pdf_selection_iface_init                    (EvSelectionIface          *iface);
-static void pdf_document_page_transition_iface_init     (EvDocumentTransitionIface *iface);
-static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
-                                                        EvRenderContext           *rc,
-                                                        gint                      *width,
-                                                        gint                      *height);
-static int  pdf_document_get_n_pages                   (EvDocument                *document);
+static void pdf_document_document_iface_init             (EvDocumentIface            *iface);
+static void pdf_document_security_iface_init             (EvDocumentSecurityIface    *iface);
+static void pdf_document_document_thumbnails_iface_init  (EvDocumentThumbnailsIface  *iface);
+static void pdf_document_document_links_iface_init       (EvDocumentLinksIface       *iface);
+static void pdf_document_document_images_iface_init      (EvDocumentImagesIface      *iface);
+static void pdf_document_document_forms_iface_init       (EvDocumentFormsIface       *iface);
+static void pdf_document_document_fonts_iface_init       (EvDocumentFontsIface       *iface);
+static void pdf_document_document_layers_iface_init      (EvDocumentLayersIface      *iface);
+static void pdf_document_document_annotations_iface_init (EvDocumentAnnotationsIface *iface);
+static void pdf_document_find_iface_init                 (EvDocumentFindIface        *iface);
+static void pdf_document_file_exporter_iface_init        (EvFileExporterIface        *iface);
+static void pdf_selection_iface_init                     (EvSelectionIface           *iface);
+static void pdf_document_page_transition_iface_init      (EvDocumentTransitionIface  *iface);
+static void pdf_document_thumbnails_get_dimensions       (EvDocumentThumbnails       *document_thumbnails,
+                                                         EvRenderContext            *rc,
+                                                         gint                       *width,
+                                                         gint                       *height);
+static int  pdf_document_get_n_pages                    (EvDocument                 *document);
 
 static EvLinkDest *ev_link_dest_from_dest   (PdfDocument       *pdf_document,
                                             PopplerDest       *dest);
@@ -145,6 +147,8 @@ EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document,
                                                                 pdf_document_document_fonts_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LAYERS,
                                                                 pdf_document_document_layers_iface_init);
+                                EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_ANNOTATIONS,
+                                                                pdf_document_document_annotations_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
                                                                 pdf_document_find_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
@@ -2331,6 +2335,185 @@ pdf_document_document_forms_iface_init (EvDocumentFormsIface *iface)
        iface->form_field_choice_get_text = pdf_document_forms_form_field_choice_get_text;
 }
 
+/* Annotations */
+static void
+poppler_annot_color_to_gdk_color (PopplerAnnot *poppler_annot,
+                                 GdkColor     *color)
+{
+       PopplerColor *poppler_color;
+
+       poppler_color = poppler_annot_get_color (poppler_annot);
+       if (poppler_color) {
+               color->red = poppler_color->red;
+               color->green = poppler_color->green;
+               color->blue = poppler_color->blue;
+
+               g_free (poppler_color);
+       } /* TODO: else use a default color */
+}
+
+static EvAnnotation *
+ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot,
+                            EvPage       *page)
+{
+       EvAnnotation *ev_annot = NULL;
+       const gchar  *unimplemented_annot = NULL;
+
+       switch (poppler_annot_get_annot_type (poppler_annot)) {
+               case POPPLER_ANNOT_TEXT:
+                       PopplerAnnotText *poppler_text;
+                       EvAnnotationText *ev_annot_text;
+
+                       poppler_text = POPPLER_ANNOT_TEXT (poppler_annot);
+
+                       ev_annot = ev_annotation_text_new (page);
+
+                       ev_annot_text = EV_ANNOTATION_TEXT (ev_annot);
+                       ev_annot_text->is_open = poppler_annot_text_get_is_open (poppler_text);
+
+                       break;
+               case POPPLER_ANNOT_LINK:
+               case POPPLER_ANNOT_WIDGET:
+                       /* Ignore link and widgets annots since they are already handled */
+                       break;
+               default: {
+                       GEnumValue *enum_value;
+
+                       enum_value = g_enum_get_value ((GEnumClass *) g_type_class_ref (POPPLER_TYPE_ANNOT_TYPE),
+                                                      poppler_annot_get_annot_type (poppler_annot));
+                       unimplemented_annot = enum_value ? enum_value->value_name : "Unknown annotation";
+               }
+       }
+
+       if (unimplemented_annot) {
+               g_warning ("Unimplemented annotation: %s, please post a "
+                          "bug report in Evince bugzilla "
+                          "(http://bugzilla.gnome.org) with a testcase.",
+                          unimplemented_annot);
+       }
+
+       if (ev_annot) {
+               ev_annot->contents = poppler_annot_get_contents (poppler_annot);
+               ev_annot->name = poppler_annot_get_name (poppler_annot);
+               ev_annot->modified = poppler_annot_get_modified (poppler_annot);
+               poppler_annot_color_to_gdk_color (poppler_annot, &ev_annot->color);
+
+               if (POPPLER_IS_ANNOT_MARKUP (poppler_annot)) {
+                       PopplerAnnotMarkup *markup;
+                       gchar *label;
+                       gdouble opacity;
+                       gboolean is_open;
+                       PopplerRectangle poppler_rect;
+
+                       markup = POPPLER_ANNOT_MARKUP (poppler_annot);
+
+                       if (poppler_annot_markup_get_popup_rectangle (markup, &poppler_rect)) {
+                               EvRectangle ev_rect;
+                               gdouble height;
+
+                               poppler_page_get_size (POPPLER_PAGE (page->backend_page),
+                                                      NULL, &height);
+                               ev_rect.x1 = poppler_rect.x1;
+                               ev_rect.x2 = poppler_rect.x2;
+                               ev_rect.y1 = height - poppler_rect.y2;
+                               ev_rect.y2 = height - poppler_rect.y1;
+
+                               g_object_set (ev_annot, "rectangle", &ev_rect, NULL);
+                       }
+
+                       label = poppler_annot_markup_get_label (markup);
+                       opacity = poppler_annot_markup_get_opacity (markup);
+                       is_open = poppler_annot_markup_get_popup_is_open (markup);
+
+                       g_object_set (ev_annot,
+                                     "label", label,
+                                     "opacity", opacity,
+                                     "is_open", is_open,
+                                     NULL);
+
+                       g_free (label);
+               }
+       }
+
+       return ev_annot;
+}
+
+static GList *
+pdf_document_annotations_get_annotations (EvDocumentAnnotations *document_annotations,
+                                         EvPage                *page)
+{
+       GList *retval = NULL;
+       PdfDocument *pdf_document;
+       PopplerPage *poppler_page;
+       GList *annots;
+       GList *list;
+       gdouble height;
+       gint i = 0;
+
+       pdf_document = PDF_DOCUMENT (document_annotations);
+       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;
+               EvAnnotationMapping *annot_mapping;
+               EvAnnotation        *ev_annot;
+
+               mapping = (PopplerAnnotMapping *)list->data;
+
+               ev_annot = ev_annot_from_poppler_annot (mapping->annot, page);
+               if (!ev_annot)
+                       continue;
+
+               i++;
+
+               /* Make sure annot has a unique name */
+               if (!ev_annot->name)
+                       ev_annot->name = g_strdup_printf ("annot-%d-%d", page->index, i);
+
+               annot_mapping = g_new0 (EvAnnotationMapping, 1);
+               annot_mapping->x1 = mapping->area.x1;
+               annot_mapping->x2 = mapping->area.x2;
+               annot_mapping->y1 = height - mapping->area.y2;
+               annot_mapping->y2 = height - mapping->area.y1;
+               annot_mapping->annotation = ev_annot;
+
+               g_object_set_data_full (G_OBJECT (ev_annot),
+                                       "poppler-annot",
+                                       g_object_ref (mapping->annot),
+                                       (GDestroyNotify) g_object_unref);
+
+               retval = g_list_prepend (retval, annot_mapping);
+       }
+
+       poppler_page_free_annot_mapping (annots);
+
+       return g_list_reverse (retval);
+}
+
+static void
+pdf_document_annotations_annotation_set_contents (EvDocumentAnnotations *document,
+                                                 EvAnnotation          *annot,
+                                                 const gchar           *contents)
+{
+       PopplerAnnot *poppler_annot;
+
+       poppler_annot = POPPLER_ANNOT (g_object_get_data (G_OBJECT (annot), "poppler-annot"));
+       if (!poppler_annot)
+               return;
+
+       poppler_annot_set_contents (poppler_annot, contents);
+       PDF_DOCUMENT (document)->modified = TRUE;
+}
+
+static void
+pdf_document_document_annotations_iface_init (EvDocumentAnnotationsIface *iface)
+{
+       iface->get_annotations = pdf_document_annotations_get_annotations;
+       iface->annotation_set_contents = pdf_document_annotations_annotation_set_contents;
+}
+
 /* Layers */
 static gboolean
 pdf_document_layers_has_layers (EvDocumentLayers *document)