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             : #include "WheelScrollAnimation.h"
       8             : 
       9             : #include "AsyncPanZoomController.h"
      10             : #include "gfxPrefs.h"
      11             : #include "nsPoint.h"
      12             : 
      13             : namespace mozilla {
      14             : namespace layers {
      15             : 
      16           0 : WheelScrollAnimation::WheelScrollAnimation(AsyncPanZoomController& aApzc,
      17             :                                            const nsPoint& aInitialPosition,
      18           0 :                                            ScrollWheelInput::ScrollDeltaType aDeltaType)
      19           0 :   : GenericScrollAnimation(aApzc, aInitialPosition)
      20             : {
      21           0 :   mForceVerticalOverscroll = !mApzc.mScrollMetadata.AllowVerticalScrollWithWheel();
      22             : 
      23           0 :   switch (aDeltaType) {
      24             :   case ScrollWheelInput::SCROLLDELTA_PAGE:
      25           0 :     mOriginMaxMS = clamped(gfxPrefs::PageSmoothScrollMaxDurationMs(), 0, 10000);
      26           0 :     mOriginMinMS = clamped(gfxPrefs::PageSmoothScrollMinDurationMs(), 0, mOriginMaxMS);
      27           0 :     break;
      28             :   case ScrollWheelInput::SCROLLDELTA_PIXEL:
      29           0 :     mOriginMaxMS = clamped(gfxPrefs::PixelSmoothScrollMaxDurationMs(), 0, 10000);
      30           0 :     mOriginMinMS = clamped(gfxPrefs::PixelSmoothScrollMinDurationMs(), 0, mOriginMaxMS);
      31           0 :     break;
      32             :   case ScrollWheelInput::SCROLLDELTA_LINE:
      33           0 :     mOriginMaxMS = clamped(gfxPrefs::WheelSmoothScrollMaxDurationMs(), 0, 10000);
      34           0 :     mOriginMinMS = clamped(gfxPrefs::WheelSmoothScrollMinDurationMs(), 0, mOriginMaxMS);
      35           0 :     break;
      36             :   }
      37             : 
      38             :   // The pref is 100-based int percentage, while mIntervalRatio is 1-based ratio
      39           0 :   mIntervalRatio = ((double)gfxPrefs::SmoothScrollDurationToIntervalRatio()) / 100.0;
      40           0 :   mIntervalRatio = std::max(1.0, mIntervalRatio);
      41           0 : }
      42             : 
      43             : } // namespace layers
      44             : } // namespace mozilla