Implement layers interface in PDF backend.

2008-11-15  Carlos Garcia Campos  <carlosgc@gnome.org>

	* configure.ac:
	* backend/pdf/ev-poppler.cc:

	Implement layers interface in PDF backend.

svn path=/trunk/; revision=3265

diff --git a/ChangeLog b/ChangeLog
index dc0d9c208c2aede4c7b45423284e9885ec277661..b1e29288ec4c0a0db467b10cabd809ca76dc1b0d 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-11-15  Carlos Garcia Campos  <carlosgc@gnome.org>
+
+       * configure.ac:
+       * backend/pdf/ev-poppler.cc:
+
+       Implement layers interface in PDF backend.
+       
 2008-11-15  Carlos Garcia Campos  <carlosgc@gnome.org>
 
        * libdocument/Makefile.am:

diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc
index a765cb4cd2d56e1cf62c3ec7a5bd5384c8c09031..bdce0b528695bab193c071867190c4c24df51796 100644 (file)
--- a/backend/pdf/ev-poppler.cc
+++ b/backend/pdf/ev-poppler.cc
@@ -44,6 +44,7 @@
 #include "ev-document-thumbnails.h"
 #include "ev-document-transition.h"
 #include "ev-document-forms.h"
+#include "ev-document-layers.h"
 #include "ev-selection.h"
 #include "ev-transition-effect.h"
 #include "ev-attachment.h"
@@ -98,6 +99,8 @@ struct _PdfDocument
 
        PdfDocumentSearch *search;
        PdfPrintContext *print_ctx;
+
+       GList *layers;
 };
 
 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
@@ -107,6 +110,7 @@ static void pdf_document_document_links_iface_init      (EvDocumentLinksIface
 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);
@@ -138,6 +142,8 @@ EV_BACKEND_REGISTER_WITH_CODE (PdfDocument, pdf_document,
                                                                 pdf_document_document_forms_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
                                                                 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_FIND,
                                                                 pdf_document_find_iface_init);
                                 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
@@ -196,6 +202,11 @@ pdf_document_dispose (GObject *object)
                poppler_fonts_iter_free (pdf_document->fonts_iter);
        }
 
+       if (pdf_document->layers) {
+               g_list_foreach (pdf_document->layers, (GFunc)g_object_unref, NULL);
+               g_list_free (pdf_document->layers);
+       }
+
        G_OBJECT_CLASS (pdf_document_parent_class)->dispose (object);
 }
 
@@ -2303,3 +2314,156 @@ pdf_document_document_forms_iface_init (EvDocumentFormsIface *iface)
        iface->form_field_choice_get_text = pdf_document_forms_form_field_choice_get_text;
 }
 
+/* Layers */
+static gboolean
+pdf_document_layers_has_layers (EvDocumentLayers *document)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+       PdfDocument *pdf_document = PDF_DOCUMENT (document);
+       PopplerLayersIter *iter;
+
+       iter = poppler_layers_iter_new (pdf_document->document);
+       if (!iter)
+               return FALSE;
+       poppler_layers_iter_free (iter);
+
+       return TRUE;
+#else
+       return FALSE;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+static void
+build_layers_tree (PdfDocument       *pdf_document,
+                  GtkTreeModel      *model,
+                  GtkTreeIter       *parent,
+                  PopplerLayersIter *iter)
+{
+       do {
+               GtkTreeIter        tree_iter;
+               PopplerLayersIter *child;
+               PopplerLayer      *layer;
+               EvLayer           *ev_layer = NULL;
+               gboolean           visible;
+               gchar             *markup;
+               gint               rb_group = 0;
+
+               layer = poppler_layers_iter_get_layer (iter);
+               if (layer) {
+                       markup = g_markup_escape_text (poppler_layer_get_title (layer), -1);
+                       visible = poppler_layer_is_visible (layer);
+                       rb_group = poppler_layer_get_radio_button_group_id (layer);
+                       pdf_document->layers = g_list_append (pdf_document->layers,
+                                                             g_object_ref (layer));
+                       ev_layer = ev_layer_new (g_list_length (pdf_document->layers) - 1,
+                                                poppler_layer_is_parent (layer),
+                                                rb_group);
+               } else {
+                       gchar *title;
+
+                       title = poppler_layers_iter_get_title (iter);
+                       markup = g_markup_escape_text (title, -1);
+                       g_free (title);
+
+                       visible = FALSE;
+                       layer = NULL;
+               }
+
+               gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
+               gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
+                                   EV_DOCUMENT_LAYERS_COLUMN_TITLE, markup,
+                                   EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, visible,
+                                   EV_DOCUMENT_LAYERS_COLUMN_ENABLED, TRUE, /* FIXME */
+                                   EV_DOCUMENT_LAYERS_COLUMN_SHOWTOGGLE, (layer != NULL),
+                                   EV_DOCUMENT_LAYERS_COLUMN_RBGROUP, rb_group,
+                                   EV_DOCUMENT_LAYERS_COLUMN_LAYER, ev_layer,
+                                   -1);
+               if (ev_layer)
+                       g_object_unref (ev_layer);
+               g_free (markup);
+
+               child = poppler_layers_iter_get_child (iter);
+               if (child)
+                       build_layers_tree (pdf_document, model, &tree_iter, child);
+               poppler_layers_iter_free (child);
+       } while (poppler_layers_iter_next (iter));
+}
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+
+static GtkTreeModel *
+pdf_document_layers_get_layers (EvDocumentLayers *document)
+{
+       GtkTreeModel *model = NULL;
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+       PdfDocument *pdf_document = PDF_DOCUMENT (document);
+       PopplerLayersIter *iter;
+
+       iter = poppler_layers_iter_new (pdf_document->document);
+       if (iter) {
+               model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LAYERS_N_COLUMNS,
+                                                            G_TYPE_STRING,  /* TITLE */
+                                                            G_TYPE_OBJECT,  /* LAYER */
+                                                            G_TYPE_BOOLEAN, /* VISIBLE */
+                                                            G_TYPE_BOOLEAN, /* ENABLED */
+                                                            G_TYPE_BOOLEAN, /* SHOWTOGGLE */
+                                                            G_TYPE_INT);    /* RBGROUP */
+               build_layers_tree (pdf_document, model, NULL, iter);
+               poppler_layers_iter_free (iter);
+       }
+       
+#endif
+       return model;
+}
+
+static void
+pdf_document_layers_show_layer (EvDocumentLayers *document,
+                               EvLayer          *layer)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+       PdfDocument *pdf_document = PDF_DOCUMENT (document);
+       guint        layer_id = ev_layer_get_id (layer);
+
+       poppler_layer_show (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
+#else
+       return;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+static void
+pdf_document_layers_hide_layer (EvDocumentLayers *document,
+                               EvLayer          *layer)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+       PdfDocument *pdf_document = PDF_DOCUMENT (document);
+       guint        layer_id = ev_layer_get_id (layer);
+
+       poppler_layer_hide (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
+#else
+       return;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+static gboolean
+pdf_document_layers_layer_is_visible (EvDocumentLayers *document,
+                                     EvLayer          *layer)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+       PdfDocument *pdf_document = PDF_DOCUMENT (document);
+       guint        layer_id = ev_layer_get_id (layer);
+
+       return poppler_layer_is_visible (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
+#else
+       return FALSE;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+static void
+pdf_document_document_layers_iface_init (EvDocumentLayersIface *iface)
+{
+       iface->has_layers = pdf_document_layers_has_layers;
+       iface->get_layers = pdf_document_layers_get_layers;
+       iface->show_layer = pdf_document_layers_show_layer;
+       iface->hide_layer = pdf_document_layers_hide_layer;
+       iface->layer_is_visible = pdf_document_layers_layer_is_visible;
+}

diff --git a/configure.ac b/configure.ac
index 5c6d726ba9d75eb02db65fc3937697f66c8c8143..4bba61b27a237728021f58e78af17f90f91ab491 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -216,6 +216,7 @@ if test "x$enable_pdf" = "xyes"; then
            evince_save_LIBS=$LIBS
            LIBS="$LIBS $POPPLER_LIBS"
            AC_CHECK_FUNCS(poppler_page_render)
+           AC_CHECK_FUNCS(poppler_layers_iter_new)
            LIBS=$evince_save_LIBS
 
            PKG_CHECK_MODULES(CAIRO_PDF, cairo-pdf, enable_cairo_pdf=yes, enable_cairo_pdf=no)