epub: fix loading epub thumbnails

origin commit:
linuxmint/xreader@6ed0ee1

Note: origin commit causes some serious build warnings,
......fixed.

Author: mickaelalbertus

backend/epub/epub-document.c

@@ -124,9 +124,10 @@ epub_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
 	cairo_surface_t *webpage;
 	GdkPixbuf *thumbnailpix = NULL ;
 	gint width,height;
-	epub_document_thumbnails_get_dimensions(document,rc,&width,&height);
-	webpage = ev_document_misc_surface_rotate_and_scale(rc->page->backend_page,width,height,0);
-	thumbnailpix = ev_document_misc_pixbuf_from_surface(webpage);
+	epub_document_thumbnails_get_dimensions (document, rc, &width, &height);
+	webpage = ev_document_misc_surface_rotate_and_scale (rc->page->backend_page,
+	                                                     width, height, 0);
+	thumbnailpix = ev_document_misc_pixbuf_from_surface (webpage);
 	return thumbnailpix;
 }
 

libview/ev-jobs.c

@@ -92,11 +92,6 @@ enum {
 	FIND_LAST_SIGNAL
 };
 
-#if ENABLE_EPUB
-static GtkWidget* webview;
-static GtkWidget* offscreenwindow;
-#endif
-
 static guint job_signals[LAST_SIGNAL] = { 0 };
 static guint job_fonts_signals[FONTS_LAST_SIGNAL] = { 0 };
 static guint job_find_signals[FIND_LAST_SIGNAL] = { 0 };
@@ -877,8 +872,12 @@ snapshot_callback(WebKitWebView *webview,
 
 	ev_document_doc_mutex_unlock ();
 	ev_job_succeeded (EV_JOB(job_thumb));
+
+	gtk_widget_destroy (gtk_widget_get_toplevel (GTK_WIDGET (webview)));
 }
 
+#endif  /* ENABLE_EPUB */
+
 static void
 web_thumbnail_get_screenshot_cb (WebKitWebView  *webview,
                                  WebKitLoadEvent event,
@@ -906,9 +905,10 @@ webview_load_failed_cb (WebKitWebView  *webview,
 	GError *e = (GError *) error;
 	g_warning ("Error loading data from %s: %s", failing_uri, e->message);
 	ev_job_failed_from_error (EV_JOB(job_thumb), e);
+
+	gtk_widget_destroy (gtk_widget_get_toplevel (GTK_WIDGET (webview)));
 	return TRUE;
 }
-#endif  /* ENABLE_EPUB */
 
 static gboolean
 ev_job_thumbnail_run (EvJob *job)
@@ -939,24 +939,23 @@ ev_job_thumbnail_run (EvJob *job)
 
 #if ENABLE_EPUB
 	if (job->document->iswebdocument == TRUE) {
-		if (!webview) {
-			webview = webkit_web_view_new();
-			g_signal_connect(WEBKIT_WEB_VIEW(webview),"load-changed",
-			                 G_CALLBACK(web_thumbnail_get_screenshot_cb),
-			                 g_object_ref (job_thumb));
-			g_signal_connect(WEBKIT_WEB_VIEW(webview),"load-failed",
-			                 G_CALLBACK(webview_load_failed_cb),
-			                 g_object_ref (job_thumb));
-		}
-
-		if (!offscreenwindow) {
-			offscreenwindow = gtk_offscreen_window_new();
-			gtk_container_add(GTK_CONTAINER(offscreenwindow),GTK_WIDGET(webview));
-			gtk_window_set_default_size (GTK_WINDOW(offscreenwindow),800,1080);
-			gtk_widget_show_all(offscreenwindow);
-		}
-
-		webkit_web_view_load_uri(WEBKIT_WEB_VIEW(webview),(gchar*)rc->page->backend_page);
+		GtkWidget *webview;
+		GtkWidget *offscreenwindow;
+	
+		webview = webkit_web_view_new ();
+		offscreenwindow = gtk_offscreen_window_new ();
+
+		gtk_container_add (GTK_CONTAINER(offscreenwindow), GTK_WIDGET (webview));
+		gtk_window_set_default_size (GTK_WINDOW(offscreenwindow), 800, 1080);
+		gtk_widget_show_all (offscreenwindow);
+
+		g_signal_connect (WEBKIT_WEB_VIEW (webview), "load-changed",
+		                  G_CALLBACK (web_thumbnail_get_screenshot_cb),
+		                  g_object_ref (job_thumb));
+		g_signal_connect (WEBKIT_WEB_VIEW(webview), "load-failed",
+		                  G_CALLBACK(webview_load_failed_cb),
+		                  g_object_ref (job_thumb));
+		webkit_web_view_load_uri (WEBKIT_WEB_VIEW (webview), (gchar*) rc->page->backend_page);
 	}
 	else 
 #endif  /* ENABLE_EPUB */