Bug 472942 - Centering video and applying some basic styling to make viewing videos directly more pretty. r=roc ui-r=shorlander

content/html/document/src/VideoDocument.cpp

@@ -133,6 +133,25 @@ VideoDocument::CreateSyntheticVideoDocument(nsIChannel* aChannel,
     element->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
         NS_LITERAL_STRING("position:absolute; top:0; left:0; width:100%; height:100%"),
         PR_TRUE);
+  } else {
+    Element* head = GetHeadElement();
+    if (!head) {
+      NS_WARNING("no head on video document!");
+      return NS_ERROR_FAILURE;
+    }
+
+    nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::style, nsnull,
+                                             kNameSpaceID_XHTML,
+                                             nsIDOMNode::ELEMENT_NODE);
+    NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
+    nsRefPtr<nsGenericHTMLElement> styleContent = NS_NewHTMLStyleElement(nodeInfo.forget());
+    NS_ENSURE_TRUE(styleContent, NS_ERROR_OUT_OF_MEMORY);
+
+    styleContent->SetTextContent(
+      NS_LITERAL_STRING("body { background: url(chrome://global/skin/icons/tabprompts-bgtexture.png) #333; height: 100%; width: 100%; margin: 0; padding: 0; } ") +
+      NS_LITERAL_STRING("video { position: absolute; top: 0; right: 0; bottom: 0; left: 0; margin: auto; box-shadow: 0 0 15px #000; } ") +
+      NS_LITERAL_STRING("video:focus { outline-width: 0; } "));
+    head->AppendChildTo(styleContent, PR_FALSE);
   }
 
   return body->AppendChildTo(element, PR_FALSE);