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Diffstat (limited to 'widget/gonk/GeckoTouchDispatcher.h')
-rw-r--r-- | widget/gonk/GeckoTouchDispatcher.h | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/widget/gonk/GeckoTouchDispatcher.h b/widget/gonk/GeckoTouchDispatcher.h deleted file mode 100644 index 3c7acd0e3..000000000 --- a/widget/gonk/GeckoTouchDispatcher.h +++ /dev/null @@ -1,99 +0,0 @@ -/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* vim: set ts=2 sts=2 et sw=2 tw=80: */ -/* Copyright 2014 Mozilla Foundation and Mozilla contributors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef GECKO_TOUCH_INPUT_DISPATCHER_h -#define GECKO_TOUCH_INPUT_DISPATCHER_h - -#include "InputData.h" -#include "Units.h" -#include "mozilla/Mutex.h" -#include <vector> -#include "mozilla/RefPtr.h" - -class nsIWidget; - -namespace mozilla { -namespace layers { -class CompositorVsyncScheduler; -} - -// Used to resample touch events whenever a vsync event occurs. It batches -// touch moves and on every vsync, resamples the touch position to create smooth -// scrolls. We use the Android touch resample algorithm. It uses a combination of -// extrapolation and interpolation. The algorithm takes the vsync time and -// subtracts mVsyncAdjust time in ms and creates a sample time. All touch events are -// relative to this sample time. If the last touch event occurs AFTER this -// sample time, interpolate the last two touch events. If the last touch event occurs BEFORE -// this sample time, we extrapolate the last two touch events to the sample -// time. The magic numbers defined as constants are taken from android -// InputTransport.cpp. -class GeckoTouchDispatcher final -{ - NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GeckoTouchDispatcher) - -public: - static GeckoTouchDispatcher* GetInstance(); - void NotifyTouch(MultiTouchInput& aTouch, TimeStamp aEventTime); - void DispatchTouchEvent(MultiTouchInput aMultiTouch); - void DispatchTouchNonMoveEvent(MultiTouchInput aInput); - void DispatchTouchMoveEvents(TimeStamp aVsyncTime); - void NotifyVsync(TimeStamp aVsyncTimestamp); - void SetCompositorVsyncScheduler(layers::CompositorVsyncScheduler* aObserver); - -protected: - ~GeckoTouchDispatcher() {} - -private: - GeckoTouchDispatcher(); - void ResampleTouchMoves(MultiTouchInput& aOutTouch, TimeStamp vsyncTime); - void SendTouchEvent(MultiTouchInput& aData); - void DispatchMouseEvent(MultiTouchInput& aMultiTouch, - bool aForwardToChildren); - - // mTouchQueueLock is used to protect the vector and state below - // as it is accessed on multiple threads. - Mutex mTouchQueueLock; - std::vector<MultiTouchInput> mTouchMoveEvents; - bool mHavePendingTouchMoves; - int mInflightNonMoveEvents; - // end stuff protected by mTouchQueueLock - - bool mResamplingEnabled; - bool mTouchEventsFiltered; - bool mEnabledUniformityInfo; - - // All times below are in nanoseconds - TimeDuration mVsyncAdjust; // Time from vsync we create sample times from - TimeDuration mMaxPredict; // How far into the future we're allowed to extrapolate - TimeDuration mMinDelta; // Minimal time difference between touches for resampling - - // Amount of time between vsync and the last event that is required before we - // resample - TimeDuration mMinResampleTime; - - // Threshold if a vsync event runs too far behind touch events - TimeDuration mDelayedVsyncThreshold; - - // How far ahead can vsync events get ahead of touch events. - TimeDuration mOldTouchThreshold; - - RefPtr<layers::CompositorVsyncScheduler> mCompositorVsyncScheduler; -}; - -} // namespace mozilla - -#endif // GECKO_TOUCH_INPUT_DISPATCHER_h |