Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set sw=2 ts=8 et tw=80 : */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_layers_DragMetrics_h
       8             : #define mozilla_layers_DragMetrics_h
       9             : 
      10             : #include "FrameMetrics.h"
      11             : #include "LayersTypes.h"
      12             : 
      13             : namespace IPC {
      14             : template <typename T> struct ParamTraits;
      15             : } // namespace IPC
      16             : 
      17             : namespace mozilla {
      18             : 
      19             : namespace layers {
      20             : 
      21             : class AsyncDragMetrics {
      22             :   friend struct IPC::ParamTraits<mozilla::layers::AsyncDragMetrics>;
      23             : 
      24             : public:
      25             :   // IPC constructor
      26           0 :   AsyncDragMetrics()
      27           0 :     : mViewId(0)
      28             :     , mPresShellId(0)
      29             :     , mDragStartSequenceNumber(0)
      30             :     , mScrollbarDragOffset(0)
      31           0 :     , mDirection(ScrollDirection::NONE)
      32           0 :   {}
      33             : 
      34           0 :   AsyncDragMetrics(const FrameMetrics::ViewID& aViewId,
      35             :                    uint32_t aPresShellId,
      36             :                    uint64_t aDragStartSequenceNumber,
      37             :                    CSSCoord aScrollbarDragOffset,
      38             :                    ScrollDirection aDirection)
      39           0 :     : mViewId(aViewId)
      40             :     , mPresShellId(aPresShellId)
      41             :     , mDragStartSequenceNumber(aDragStartSequenceNumber)
      42             :     , mScrollbarDragOffset(aScrollbarDragOffset)
      43           0 :     , mDirection(aDirection)
      44           0 :   {}
      45             : 
      46             :   FrameMetrics::ViewID mViewId;
      47             :   uint32_t mPresShellId;
      48             :   uint64_t mDragStartSequenceNumber;
      49             :   CSSCoord mScrollbarDragOffset;  // relative to the thumb's start offset
      50             :   ScrollDirection mDirection;
      51             : };
      52             : 
      53             : }
      54             : }
      55             : 
      56             : #endif