From 0cee6386acad57fdafb374fb389bc80fcf7e8546 Mon Sep 17 00:00:00 2001
From: Perberos <perberos@gmail.com>
Date: Mon, 3 Sep 2012 20:12:09 -0300
Subject: adding thumbnail support for xps backend

---
 backend/xps/xps-document.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++
 backend/xps/xps-document.h |  2 +-
 2 files changed, 57 insertions(+), 1 deletion(-)

(limited to 'backend')

diff --git a/backend/xps/xps-document.c b/backend/xps/xps-document.c
index 891f2008..fc3c15c3 100644
--- a/backend/xps/xps-document.c
+++ b/backend/xps/xps-document.c
@@ -1,3 +1,4 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
 /* this file is part of atril, a mate document viewer
  *
  * Copyright (C) 2010 Carlos Garcia Campos <carlosgc@gnome.org>
@@ -26,6 +27,7 @@
 #include "xps-document.h"
 #include "ev-document-links.h"
 #include "ev-document-misc.h"
+#include "ev-document-thumbnails.h"
 #include "ev-document-print.h"
 
 struct _XPSDocument {
@@ -42,6 +44,7 @@ struct _XPSDocumentClass {
 
 static void xps_document_document_links_iface_init (EvDocumentLinksInterface *iface);
 static void xps_document_document_print_iface_init (EvDocumentPrintInterface *iface);
+static void xps_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface);
 
 EV_BACKEND_REGISTER_WITH_CODE (XPSDocument, xps_document,
 	       {
@@ -49,6 +52,8 @@ EV_BACKEND_REGISTER_WITH_CODE (XPSDocument, xps_document,
 						       xps_document_document_links_iface_init);
 		       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_PRINT,
 						       xps_document_document_print_iface_init);
+		       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
+						       xps_document_document_thumbnails_iface_init);
 	       })
 
 /* XPSDocument */
@@ -503,3 +508,54 @@ xps_document_document_print_iface_init (EvDocumentPrintInterface *iface)
 	iface->print_page = xps_document_print_print_page;
 }
 
+static GdkPixbuf *
+xps_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
+                                       EvRenderContext      *rc,
+                                       gboolean              border)
+{
+	GdkPixbuf *thumbnail;
+	cairo_surface_t *surface;
+	
+	surface = xps_document_render (EV_DOCUMENT (document), rc);
+	
+	thumbnail = ev_document_misc_pixbuf_from_surface (surface);
+	
+	cairo_surface_destroy (surface);
+	
+	if (border) {
+		GdkPixbuf *tmp_pixbuf = thumbnail;
+
+		thumbnail = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
+		g_object_unref (tmp_pixbuf);
+	}
+
+	return thumbnail;
+}
+
+static void
+xps_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
+                                        EvRenderContext      *rc,
+                                        gint                 *width,
+                                        gint                 *height)
+{
+	gdouble page_width, page_height;
+	
+	xps_document_get_page_size (EV_DOCUMENT (document), rc->page,
+	                            &page_width, &page_height);
+
+	if (rc->rotation == 90 || rc->rotation == 270) {
+		*width = (gint) (page_height * rc->scale);
+		*height = (gint) (page_width * rc->scale);
+	} else {
+		*width = (gint) (page_width * rc->scale);
+		*height = (gint) (page_height * rc->scale);
+	}
+}
+
+static void
+xps_document_document_thumbnails_iface_init (EvDocumentThumbnailsInterface *iface)
+{
+	iface->get_thumbnail = xps_document_thumbnails_get_thumbnail;
+	iface->get_dimensions = xps_document_thumbnails_get_dimensions;
+}
+
diff --git a/backend/xps/xps-document.h b/backend/xps/xps-document.h
index c5cc0cd6..e4b90437 100644
--- a/backend/xps/xps-document.h
+++ b/backend/xps/xps-document.h
@@ -38,7 +38,7 @@ typedef struct _XPSDocumentClass XPSDocumentClass;
 
 GType                 xps_document_get_type   (void) G_GNUC_CONST;
 
-G_MODULE_EXPORT GType register_evince_backend (GTypeModule *module);
+G_MODULE_EXPORT GType register_atril_backend (GTypeModule *module);
 
 G_END_DECLS
 
-- 
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