michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * vim: sw=2 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_layer_RenderFrameUtils_h
michael@0: #define mozilla_layer_RenderFrameUtils_h
michael@0: 
michael@0: #include "ipc/IPCMessageUtils.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layout {
michael@0: 
michael@0: enum ScrollingBehavior {
michael@0:   /**
michael@0:    * Use default scrolling behavior, which is synchronous: web content
michael@0:    * is reflowed and repainted for every scroll or zoom.
michael@0:    */
michael@0:   DEFAULT_SCROLLING,
michael@0:   /**
michael@0:    * Use asynchronous panning and zooming, in which prerendered
michael@0:    * content can be translated and scaled independently of the thread
michael@0:    * painting content, without content reflowing or repainting.
michael@0:    */
michael@0:   ASYNC_PAN_ZOOM,
michael@0:   SCROLLING_BEHAVIOR_SENTINEL
michael@0: };
michael@0: 
michael@0: } // namespace layout
michael@0: } // namespace mozilla
michael@0: 
michael@0: namespace IPC {
michael@0: 
michael@0: template <>
michael@0: struct ParamTraits<mozilla::layout::ScrollingBehavior>
michael@0:   : public ContiguousEnumSerializer<
michael@0:              mozilla::layout::ScrollingBehavior,
michael@0:              mozilla::layout::DEFAULT_SCROLLING,
michael@0:              mozilla::layout::SCROLLING_BEHAVIOR_SENTINEL>
michael@0: {};
michael@0: 
michael@0: } // namespace IPC
michael@0: 
michael@0: #endif // mozilla_layer_RenderFrameUtils_h