214eaf4887
Fix bug where the pointer presentation would be updated on any input reader timeout rather than only when a pointer gesture is in progress. Bug: 4124987 Change-Id: Ie9bba4a0b3228d55e45e65fa2ede5cd6ba887a08
1397 lines
46 KiB
C++
1397 lines
46 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _UI_INPUT_READER_H
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#define _UI_INPUT_READER_H
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#include "EventHub.h"
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#include "InputDispatcher.h"
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#include "PointerController.h"
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#include <ui/Input.h>
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#include <ui/DisplayInfo.h>
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#include <utils/KeyedVector.h>
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#include <utils/threads.h>
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#include <utils/Timers.h>
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#include <utils/RefBase.h>
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#include <utils/String8.h>
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#include <utils/BitSet.h>
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#include <stddef.h>
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#include <unistd.h>
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namespace android {
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class InputDevice;
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class InputMapper;
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/*
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* Input reader configuration.
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*
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* Specifies various options that modify the behavior of the input reader.
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*/
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struct InputReaderConfiguration {
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// Determines whether to turn on some hacks we have to improve the touch interaction with a
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// certain device whose screen currently is not all that good.
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bool filterTouchEvents;
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// Determines whether to turn on some hacks to improve touch interaction with another device
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// where touch coordinate data can get corrupted.
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bool filterJumpyTouchEvents;
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// Gets the amount of time to disable virtual keys after the screen is touched
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// in order to filter out accidental virtual key presses due to swiping gestures
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// or taps near the edge of the display. May be 0 to disable the feature.
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nsecs_t virtualKeyQuietTime;
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// The excluded device names for the platform.
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// Devices with these names will be ignored.
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Vector<String8> excludedDeviceNames;
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// Quiet time between certain pointer gesture transitions.
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// Time to allow for all fingers or buttons to settle into a stable state before
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// starting a new gesture.
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nsecs_t pointerGestureQuietInterval;
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// The minimum speed that a pointer must travel for us to consider switching the active
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// touch pointer to it during a drag. This threshold is set to avoid switching due
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// to noise from a finger resting on the touch pad (perhaps just pressing it down).
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float pointerGestureDragMinSwitchSpeed; // in pixels per second
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// Tap gesture delay time.
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// The time between down and up must be less than this to be considered a tap.
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nsecs_t pointerGestureTapInterval;
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// Tap drag gesture delay time.
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// The time between the previous tap's up and the next down must be less than
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// this to be considered a drag. Otherwise, the previous tap is finished and a
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// new tap begins.
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//
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// Note that the previous tap will be held down for this entire duration so this
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// interval must be shorter than the long press timeout.
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nsecs_t pointerGestureTapDragInterval;
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// The distance in pixels that the pointer is allowed to move from initial down
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// to up and still be called a tap.
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float pointerGestureTapSlop; // in pixels
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// Time after the first touch points go down to settle on an initial centroid.
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// This is intended to be enough time to handle cases where the user puts down two
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// fingers at almost but not quite exactly the same time.
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nsecs_t pointerGestureMultitouchSettleInterval;
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// The transition from PRESS to SWIPE or FREEFORM gesture mode is made when
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// both of the pointers are moving at least this fast.
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float pointerGestureMultitouchMinSpeed; // in pixels per second
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// The transition from PRESS to SWIPE gesture mode can only occur when the
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// cosine of the angle between the two vectors is greater than or equal to than this value
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// which indicates that the vectors are oriented in the same direction.
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// When the vectors are oriented in the exactly same direction, the cosine is 1.0.
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// (In exactly opposite directions, the cosine is -1.0.)
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float pointerGestureSwipeTransitionAngleCosine;
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// The transition from PRESS to SWIPE gesture mode can only occur when the
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// fingers are no more than this far apart relative to the diagonal size of
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// the touch pad. For example, a ratio of 0.5 means that the fingers must be
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// no more than half the diagonal size of the touch pad apart.
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float pointerGestureSwipeMaxWidthRatio;
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// The gesture movement speed factor relative to the size of the display.
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// Movement speed applies when the fingers are moving in the same direction.
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// Without acceleration, a full swipe of the touch pad diagonal in movement mode
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// will cover this portion of the display diagonal.
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float pointerGestureMovementSpeedRatio;
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// The gesture zoom speed factor relative to the size of the display.
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// Zoom speed applies when the fingers are mostly moving relative to each other
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// to execute a scale gesture or similar.
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// Without acceleration, a full swipe of the touch pad diagonal in zoom mode
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// will cover this portion of the display diagonal.
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float pointerGestureZoomSpeedRatio;
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InputReaderConfiguration() :
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filterTouchEvents(false),
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filterJumpyTouchEvents(false),
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virtualKeyQuietTime(0),
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pointerGestureQuietInterval(100 * 1000000LL), // 100 ms
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pointerGestureDragMinSwitchSpeed(50), // 50 pixels per second
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pointerGestureTapInterval(150 * 1000000LL), // 150 ms
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pointerGestureTapDragInterval(150 * 1000000LL), // 150 ms
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pointerGestureTapSlop(10.0f), // 10 pixels
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pointerGestureMultitouchSettleInterval(100 * 1000000LL), // 100 ms
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pointerGestureMultitouchMinSpeed(150.0f), // 150 pixels per second
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pointerGestureSwipeTransitionAngleCosine(0.5f), // cosine of 45degrees
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pointerGestureSwipeMaxWidthRatio(0.333f),
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pointerGestureMovementSpeedRatio(0.8f),
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pointerGestureZoomSpeedRatio(0.3f) { }
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};
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/*
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* Input reader policy interface.
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*
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* The input reader policy is used by the input reader to interact with the Window Manager
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* and other system components.
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*
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* The actual implementation is partially supported by callbacks into the DVM
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* via JNI. This interface is also mocked in the unit tests.
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*/
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class InputReaderPolicyInterface : public virtual RefBase {
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protected:
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InputReaderPolicyInterface() { }
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virtual ~InputReaderPolicyInterface() { }
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public:
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/* Display orientations. */
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enum {
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ROTATION_0 = 0,
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ROTATION_90 = 1,
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ROTATION_180 = 2,
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ROTATION_270 = 3
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};
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/* Gets information about the display with the specified id.
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* Returns true if the display info is available, false otherwise.
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*/
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virtual bool getDisplayInfo(int32_t displayId,
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int32_t* width, int32_t* height, int32_t* orientation) = 0;
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/* Gets the input reader configuration. */
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virtual void getReaderConfiguration(InputReaderConfiguration* outConfig) = 0;
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/* Gets a pointer controller associated with the specified cursor device (ie. a mouse). */
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virtual sp<PointerControllerInterface> obtainPointerController(int32_t deviceId) = 0;
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};
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/* Processes raw input events and sends cooked event data to an input dispatcher. */
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class InputReaderInterface : public virtual RefBase {
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protected:
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InputReaderInterface() { }
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virtual ~InputReaderInterface() { }
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public:
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/* Dumps the state of the input reader.
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*
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* This method may be called on any thread (usually by the input manager). */
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virtual void dump(String8& dump) = 0;
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/* Runs a single iteration of the processing loop.
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* Nominally reads and processes one incoming message from the EventHub.
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*
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* This method should be called on the input reader thread.
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*/
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virtual void loopOnce() = 0;
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/* Gets the current input device configuration.
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*
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* This method may be called on any thread (usually by the input manager).
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*/
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virtual void getInputConfiguration(InputConfiguration* outConfiguration) = 0;
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/* Gets information about the specified input device.
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* Returns OK if the device information was obtained or NAME_NOT_FOUND if there
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* was no such device.
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*
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* This method may be called on any thread (usually by the input manager).
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*/
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virtual status_t getInputDeviceInfo(int32_t deviceId, InputDeviceInfo* outDeviceInfo) = 0;
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/* Gets the list of all registered device ids. */
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virtual void getInputDeviceIds(Vector<int32_t>& outDeviceIds) = 0;
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/* Query current input state. */
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virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask,
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int32_t scanCode) = 0;
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virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask,
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int32_t keyCode) = 0;
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virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask,
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int32_t sw) = 0;
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/* Determine whether physical keys exist for the given framework-domain key codes. */
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virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask,
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size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) = 0;
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};
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/* Internal interface used by individual input devices to access global input device state
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* and parameters maintained by the input reader.
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*/
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class InputReaderContext {
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public:
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InputReaderContext() { }
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virtual ~InputReaderContext() { }
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virtual void updateGlobalMetaState() = 0;
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virtual int32_t getGlobalMetaState() = 0;
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virtual void disableVirtualKeysUntil(nsecs_t time) = 0;
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virtual bool shouldDropVirtualKey(nsecs_t now,
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InputDevice* device, int32_t keyCode, int32_t scanCode) = 0;
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virtual void fadePointer() = 0;
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virtual void requestTimeoutAtTime(nsecs_t when) = 0;
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virtual InputReaderPolicyInterface* getPolicy() = 0;
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virtual const InputReaderConfiguration* getConfig() = 0;
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virtual InputDispatcherInterface* getDispatcher() = 0;
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virtual EventHubInterface* getEventHub() = 0;
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};
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/* The input reader reads raw event data from the event hub and processes it into input events
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* that it sends to the input dispatcher. Some functions of the input reader, such as early
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* event filtering in low power states, are controlled by a separate policy object.
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*
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* IMPORTANT INVARIANT:
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* Because the policy and dispatcher can potentially block or cause re-entrance into
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* the input reader, the input reader never calls into other components while holding
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* an exclusive internal lock whenever re-entrance can happen.
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*/
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class InputReader : public InputReaderInterface, protected InputReaderContext {
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public:
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InputReader(const sp<EventHubInterface>& eventHub,
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const sp<InputReaderPolicyInterface>& policy,
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const sp<InputDispatcherInterface>& dispatcher);
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virtual ~InputReader();
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virtual void dump(String8& dump);
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virtual void loopOnce();
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virtual void getInputConfiguration(InputConfiguration* outConfiguration);
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virtual status_t getInputDeviceInfo(int32_t deviceId, InputDeviceInfo* outDeviceInfo);
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virtual void getInputDeviceIds(Vector<int32_t>& outDeviceIds);
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virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask,
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int32_t scanCode);
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virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask,
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int32_t keyCode);
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virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask,
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int32_t sw);
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virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask,
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size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags);
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protected:
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// These methods are protected virtual so they can be overridden and instrumented
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// by test cases.
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virtual InputDevice* createDevice(int32_t deviceId, const String8& name, uint32_t classes);
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private:
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sp<EventHubInterface> mEventHub;
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sp<InputReaderPolicyInterface> mPolicy;
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sp<InputDispatcherInterface> mDispatcher;
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InputReaderConfiguration mConfig;
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virtual InputReaderPolicyInterface* getPolicy() { return mPolicy.get(); }
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virtual const InputReaderConfiguration* getConfig() { return &mConfig; }
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virtual InputDispatcherInterface* getDispatcher() { return mDispatcher.get(); }
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virtual EventHubInterface* getEventHub() { return mEventHub.get(); }
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// The event queue.
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static const int EVENT_BUFFER_SIZE = 256;
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RawEvent mEventBuffer[EVENT_BUFFER_SIZE];
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// This reader/writer lock guards the list of input devices.
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// The writer lock must be held whenever the list of input devices is modified
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// and then promptly released.
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// The reader lock must be held whenever the list of input devices is traversed or an
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// input device in the list is accessed.
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// This lock only protects the registry and prevents inadvertent deletion of device objects
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// that are in use. Individual devices are responsible for guarding their own internal state
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// as needed for concurrent operation.
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RWLock mDeviceRegistryLock;
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KeyedVector<int32_t, InputDevice*> mDevices;
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// low-level input event decoding and device management
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void processEvents(const RawEvent* rawEvents, size_t count);
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void addDevice(int32_t deviceId);
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void removeDevice(int32_t deviceId);
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void processEventsForDevice(int32_t deviceId, const RawEvent* rawEvents, size_t count);
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void timeoutExpired(nsecs_t when);
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void handleConfigurationChanged(nsecs_t when);
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void configureExcludedDevices();
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// state management for all devices
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Mutex mStateLock;
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int32_t mGlobalMetaState;
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virtual void updateGlobalMetaState();
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virtual int32_t getGlobalMetaState();
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virtual void fadePointer();
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InputConfiguration mInputConfiguration;
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void updateInputConfiguration();
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nsecs_t mDisableVirtualKeysTimeout; // only accessed by reader thread
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virtual void disableVirtualKeysUntil(nsecs_t time);
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virtual bool shouldDropVirtualKey(nsecs_t now,
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InputDevice* device, int32_t keyCode, int32_t scanCode);
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nsecs_t mNextTimeout; // only accessed by reader thread
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virtual void requestTimeoutAtTime(nsecs_t when);
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// state queries
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typedef int32_t (InputDevice::*GetStateFunc)(uint32_t sourceMask, int32_t code);
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int32_t getState(int32_t deviceId, uint32_t sourceMask, int32_t code,
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GetStateFunc getStateFunc);
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bool markSupportedKeyCodes(int32_t deviceId, uint32_t sourceMask, size_t numCodes,
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const int32_t* keyCodes, uint8_t* outFlags);
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};
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/* Reads raw events from the event hub and processes them, endlessly. */
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class InputReaderThread : public Thread {
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public:
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InputReaderThread(const sp<InputReaderInterface>& reader);
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virtual ~InputReaderThread();
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private:
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sp<InputReaderInterface> mReader;
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virtual bool threadLoop();
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};
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/* Represents the state of a single input device. */
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class InputDevice {
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public:
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InputDevice(InputReaderContext* context, int32_t id, const String8& name);
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~InputDevice();
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inline InputReaderContext* getContext() { return mContext; }
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inline int32_t getId() { return mId; }
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inline const String8& getName() { return mName; }
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inline uint32_t getSources() { return mSources; }
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inline bool isExternal() { return mIsExternal; }
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inline void setExternal(bool external) { mIsExternal = external; }
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inline bool isIgnored() { return mMappers.isEmpty(); }
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void dump(String8& dump);
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void addMapper(InputMapper* mapper);
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void configure();
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void reset();
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void process(const RawEvent* rawEvents, size_t count);
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void timeoutExpired(nsecs_t when);
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void getDeviceInfo(InputDeviceInfo* outDeviceInfo);
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int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode);
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int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
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int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode);
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bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
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const int32_t* keyCodes, uint8_t* outFlags);
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int32_t getMetaState();
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void fadePointer();
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inline const PropertyMap& getConfiguration() {
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return mConfiguration;
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}
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private:
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InputReaderContext* mContext;
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int32_t mId;
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Vector<InputMapper*> mMappers;
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String8 mName;
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uint32_t mSources;
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bool mIsExternal;
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typedef int32_t (InputMapper::*GetStateFunc)(uint32_t sourceMask, int32_t code);
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int32_t getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc);
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PropertyMap mConfiguration;
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};
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/* An input mapper transforms raw input events into cooked event data.
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* A single input device can have multiple associated input mappers in order to interpret
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* different classes of events.
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*/
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class InputMapper {
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public:
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InputMapper(InputDevice* device);
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virtual ~InputMapper();
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inline InputDevice* getDevice() { return mDevice; }
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inline int32_t getDeviceId() { return mDevice->getId(); }
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inline const String8 getDeviceName() { return mDevice->getName(); }
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inline InputReaderContext* getContext() { return mContext; }
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inline InputReaderPolicyInterface* getPolicy() { return mContext->getPolicy(); }
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inline const InputReaderConfiguration* getConfig() { return mContext->getConfig(); }
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inline InputDispatcherInterface* getDispatcher() { return mContext->getDispatcher(); }
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inline EventHubInterface* getEventHub() { return mContext->getEventHub(); }
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virtual uint32_t getSources() = 0;
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virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
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virtual void dump(String8& dump);
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virtual void configure();
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virtual void reset();
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virtual void process(const RawEvent* rawEvent) = 0;
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virtual void timeoutExpired(nsecs_t when);
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virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode);
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virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
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virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode);
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virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
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const int32_t* keyCodes, uint8_t* outFlags);
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virtual int32_t getMetaState();
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virtual void fadePointer();
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protected:
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InputDevice* mDevice;
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InputReaderContext* mContext;
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static void dumpRawAbsoluteAxisInfo(String8& dump,
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const RawAbsoluteAxisInfo& axis, const char* name);
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};
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class SwitchInputMapper : public InputMapper {
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public:
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SwitchInputMapper(InputDevice* device);
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virtual ~SwitchInputMapper();
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virtual uint32_t getSources();
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virtual void process(const RawEvent* rawEvent);
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virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode);
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private:
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void processSwitch(nsecs_t when, int32_t switchCode, int32_t switchValue);
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};
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class KeyboardInputMapper : public InputMapper {
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public:
|
|
KeyboardInputMapper(InputDevice* device, uint32_t source, int32_t keyboardType);
|
|
virtual ~KeyboardInputMapper();
|
|
|
|
virtual uint32_t getSources();
|
|
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
|
|
virtual void dump(String8& dump);
|
|
virtual void configure();
|
|
virtual void reset();
|
|
virtual void process(const RawEvent* rawEvent);
|
|
|
|
virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode);
|
|
virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
|
|
virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
|
|
const int32_t* keyCodes, uint8_t* outFlags);
|
|
|
|
virtual int32_t getMetaState();
|
|
|
|
private:
|
|
Mutex mLock;
|
|
|
|
struct KeyDown {
|
|
int32_t keyCode;
|
|
int32_t scanCode;
|
|
};
|
|
|
|
uint32_t mSource;
|
|
int32_t mKeyboardType;
|
|
|
|
// Immutable configuration parameters.
|
|
struct Parameters {
|
|
int32_t associatedDisplayId;
|
|
bool orientationAware;
|
|
} mParameters;
|
|
|
|
struct LockedState {
|
|
Vector<KeyDown> keyDowns; // keys that are down
|
|
int32_t metaState;
|
|
nsecs_t downTime; // time of most recent key down
|
|
|
|
struct LedState {
|
|
bool avail; // led is available
|
|
bool on; // we think the led is currently on
|
|
};
|
|
LedState capsLockLedState;
|
|
LedState numLockLedState;
|
|
LedState scrollLockLedState;
|
|
} mLocked;
|
|
|
|
void initializeLocked();
|
|
|
|
void configureParameters();
|
|
void dumpParameters(String8& dump);
|
|
|
|
bool isKeyboardOrGamepadKey(int32_t scanCode);
|
|
|
|
void processKey(nsecs_t when, bool down, int32_t keyCode, int32_t scanCode,
|
|
uint32_t policyFlags);
|
|
|
|
ssize_t findKeyDownLocked(int32_t scanCode);
|
|
|
|
void resetLedStateLocked();
|
|
void initializeLedStateLocked(LockedState::LedState& ledState, int32_t led);
|
|
void updateLedStateLocked(bool reset);
|
|
void updateLedStateForModifierLocked(LockedState::LedState& ledState, int32_t led,
|
|
int32_t modifier, bool reset);
|
|
};
|
|
|
|
|
|
class CursorInputMapper : public InputMapper {
|
|
public:
|
|
CursorInputMapper(InputDevice* device);
|
|
virtual ~CursorInputMapper();
|
|
|
|
virtual uint32_t getSources();
|
|
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
|
|
virtual void dump(String8& dump);
|
|
virtual void configure();
|
|
virtual void reset();
|
|
virtual void process(const RawEvent* rawEvent);
|
|
|
|
virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
|
|
|
|
virtual void fadePointer();
|
|
|
|
private:
|
|
// Amount that trackball needs to move in order to generate a key event.
|
|
static const int32_t TRACKBALL_MOVEMENT_THRESHOLD = 6;
|
|
|
|
Mutex mLock;
|
|
|
|
// Immutable configuration parameters.
|
|
struct Parameters {
|
|
enum Mode {
|
|
MODE_POINTER,
|
|
MODE_NAVIGATION,
|
|
};
|
|
|
|
Mode mode;
|
|
int32_t associatedDisplayId;
|
|
bool orientationAware;
|
|
} mParameters;
|
|
|
|
struct Accumulator {
|
|
enum {
|
|
FIELD_BUTTONS = 1,
|
|
FIELD_REL_X = 2,
|
|
FIELD_REL_Y = 4,
|
|
FIELD_REL_WHEEL = 8,
|
|
FIELD_REL_HWHEEL = 16,
|
|
};
|
|
|
|
uint32_t fields;
|
|
|
|
uint32_t buttonDown;
|
|
uint32_t buttonUp;
|
|
|
|
int32_t relX;
|
|
int32_t relY;
|
|
int32_t relWheel;
|
|
int32_t relHWheel;
|
|
|
|
inline void clear() {
|
|
fields = 0;
|
|
}
|
|
} mAccumulator;
|
|
|
|
int32_t mSource;
|
|
float mXScale;
|
|
float mYScale;
|
|
float mXPrecision;
|
|
float mYPrecision;
|
|
|
|
bool mHaveVWheel;
|
|
bool mHaveHWheel;
|
|
float mVWheelScale;
|
|
float mHWheelScale;
|
|
|
|
sp<PointerControllerInterface> mPointerController;
|
|
|
|
struct LockedState {
|
|
uint32_t buttonState;
|
|
nsecs_t downTime;
|
|
} mLocked;
|
|
|
|
void initializeLocked();
|
|
|
|
void configureParameters();
|
|
void dumpParameters(String8& dump);
|
|
|
|
void sync(nsecs_t when);
|
|
};
|
|
|
|
|
|
class TouchInputMapper : public InputMapper {
|
|
public:
|
|
TouchInputMapper(InputDevice* device);
|
|
virtual ~TouchInputMapper();
|
|
|
|
virtual uint32_t getSources();
|
|
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
|
|
virtual void dump(String8& dump);
|
|
virtual void configure();
|
|
virtual void reset();
|
|
|
|
virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode);
|
|
virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
|
|
virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
|
|
const int32_t* keyCodes, uint8_t* outFlags);
|
|
|
|
virtual void fadePointer();
|
|
virtual void timeoutExpired(nsecs_t when);
|
|
|
|
protected:
|
|
Mutex mLock;
|
|
|
|
struct VirtualKey {
|
|
int32_t keyCode;
|
|
int32_t scanCode;
|
|
uint32_t flags;
|
|
|
|
// computed hit box, specified in touch screen coords based on known display size
|
|
int32_t hitLeft;
|
|
int32_t hitTop;
|
|
int32_t hitRight;
|
|
int32_t hitBottom;
|
|
|
|
inline bool isHit(int32_t x, int32_t y) const {
|
|
return x >= hitLeft && x <= hitRight && y >= hitTop && y <= hitBottom;
|
|
}
|
|
};
|
|
|
|
// Raw data for a single pointer.
|
|
struct PointerData {
|
|
uint32_t id;
|
|
int32_t x;
|
|
int32_t y;
|
|
int32_t pressure;
|
|
int32_t touchMajor;
|
|
int32_t touchMinor;
|
|
int32_t toolMajor;
|
|
int32_t toolMinor;
|
|
int32_t orientation;
|
|
|
|
inline bool operator== (const PointerData& other) const {
|
|
return id == other.id
|
|
&& x == other.x
|
|
&& y == other.y
|
|
&& pressure == other.pressure
|
|
&& touchMajor == other.touchMajor
|
|
&& touchMinor == other.touchMinor
|
|
&& toolMajor == other.toolMajor
|
|
&& toolMinor == other.toolMinor
|
|
&& orientation == other.orientation;
|
|
}
|
|
inline bool operator!= (const PointerData& other) const {
|
|
return !(*this == other);
|
|
}
|
|
};
|
|
|
|
// Raw data for a collection of pointers including a pointer id mapping table.
|
|
struct TouchData {
|
|
uint32_t pointerCount;
|
|
PointerData pointers[MAX_POINTERS];
|
|
BitSet32 idBits;
|
|
uint32_t idToIndex[MAX_POINTER_ID + 1];
|
|
uint32_t buttonState;
|
|
|
|
void copyFrom(const TouchData& other) {
|
|
pointerCount = other.pointerCount;
|
|
idBits = other.idBits;
|
|
buttonState = other.buttonState;
|
|
|
|
for (uint32_t i = 0; i < pointerCount; i++) {
|
|
pointers[i] = other.pointers[i];
|
|
|
|
int id = pointers[i].id;
|
|
idToIndex[id] = other.idToIndex[id];
|
|
}
|
|
}
|
|
|
|
inline void clear() {
|
|
pointerCount = 0;
|
|
idBits.clear();
|
|
buttonState = 0;
|
|
}
|
|
|
|
void getCentroid(float* outX, float* outY) {
|
|
float x = 0, y = 0;
|
|
if (pointerCount != 0) {
|
|
for (uint32_t i = 0; i < pointerCount; i++) {
|
|
x += pointers[i].x;
|
|
y += pointers[i].y;
|
|
}
|
|
x /= pointerCount;
|
|
y /= pointerCount;
|
|
}
|
|
*outX = x;
|
|
*outY = y;
|
|
}
|
|
};
|
|
|
|
// Input sources supported by the device.
|
|
uint32_t mTouchSource; // sources when reporting touch data
|
|
uint32_t mPointerSource; // sources when reporting pointer gestures
|
|
|
|
// The reader's configuration.
|
|
const InputReaderConfiguration* mConfig;
|
|
|
|
// Immutable configuration parameters.
|
|
struct Parameters {
|
|
enum DeviceType {
|
|
DEVICE_TYPE_TOUCH_SCREEN,
|
|
DEVICE_TYPE_TOUCH_PAD,
|
|
DEVICE_TYPE_POINTER,
|
|
};
|
|
|
|
DeviceType deviceType;
|
|
int32_t associatedDisplayId;
|
|
bool orientationAware;
|
|
|
|
bool useBadTouchFilter;
|
|
bool useJumpyTouchFilter;
|
|
bool useAveragingTouchFilter;
|
|
|
|
enum GestureMode {
|
|
GESTURE_MODE_POINTER,
|
|
GESTURE_MODE_SPOTS,
|
|
};
|
|
GestureMode gestureMode;
|
|
} mParameters;
|
|
|
|
// Immutable calibration parameters in parsed form.
|
|
struct Calibration {
|
|
// Touch Size
|
|
enum TouchSizeCalibration {
|
|
TOUCH_SIZE_CALIBRATION_DEFAULT,
|
|
TOUCH_SIZE_CALIBRATION_NONE,
|
|
TOUCH_SIZE_CALIBRATION_GEOMETRIC,
|
|
TOUCH_SIZE_CALIBRATION_PRESSURE,
|
|
};
|
|
|
|
TouchSizeCalibration touchSizeCalibration;
|
|
|
|
// Tool Size
|
|
enum ToolSizeCalibration {
|
|
TOOL_SIZE_CALIBRATION_DEFAULT,
|
|
TOOL_SIZE_CALIBRATION_NONE,
|
|
TOOL_SIZE_CALIBRATION_GEOMETRIC,
|
|
TOOL_SIZE_CALIBRATION_LINEAR,
|
|
TOOL_SIZE_CALIBRATION_AREA,
|
|
};
|
|
|
|
ToolSizeCalibration toolSizeCalibration;
|
|
bool haveToolSizeLinearScale;
|
|
float toolSizeLinearScale;
|
|
bool haveToolSizeLinearBias;
|
|
float toolSizeLinearBias;
|
|
bool haveToolSizeAreaScale;
|
|
float toolSizeAreaScale;
|
|
bool haveToolSizeAreaBias;
|
|
float toolSizeAreaBias;
|
|
bool haveToolSizeIsSummed;
|
|
bool toolSizeIsSummed;
|
|
|
|
// Pressure
|
|
enum PressureCalibration {
|
|
PRESSURE_CALIBRATION_DEFAULT,
|
|
PRESSURE_CALIBRATION_NONE,
|
|
PRESSURE_CALIBRATION_PHYSICAL,
|
|
PRESSURE_CALIBRATION_AMPLITUDE,
|
|
};
|
|
enum PressureSource {
|
|
PRESSURE_SOURCE_DEFAULT,
|
|
PRESSURE_SOURCE_PRESSURE,
|
|
PRESSURE_SOURCE_TOUCH,
|
|
};
|
|
|
|
PressureCalibration pressureCalibration;
|
|
PressureSource pressureSource;
|
|
bool havePressureScale;
|
|
float pressureScale;
|
|
|
|
// Size
|
|
enum SizeCalibration {
|
|
SIZE_CALIBRATION_DEFAULT,
|
|
SIZE_CALIBRATION_NONE,
|
|
SIZE_CALIBRATION_NORMALIZED,
|
|
};
|
|
|
|
SizeCalibration sizeCalibration;
|
|
|
|
// Orientation
|
|
enum OrientationCalibration {
|
|
ORIENTATION_CALIBRATION_DEFAULT,
|
|
ORIENTATION_CALIBRATION_NONE,
|
|
ORIENTATION_CALIBRATION_INTERPOLATED,
|
|
ORIENTATION_CALIBRATION_VECTOR,
|
|
};
|
|
|
|
OrientationCalibration orientationCalibration;
|
|
} mCalibration;
|
|
|
|
// Raw axis information from the driver.
|
|
struct RawAxes {
|
|
RawAbsoluteAxisInfo x;
|
|
RawAbsoluteAxisInfo y;
|
|
RawAbsoluteAxisInfo pressure;
|
|
RawAbsoluteAxisInfo touchMajor;
|
|
RawAbsoluteAxisInfo touchMinor;
|
|
RawAbsoluteAxisInfo toolMajor;
|
|
RawAbsoluteAxisInfo toolMinor;
|
|
RawAbsoluteAxisInfo orientation;
|
|
} mRawAxes;
|
|
|
|
// Current and previous touch sample data.
|
|
TouchData mCurrentTouch;
|
|
PointerCoords mCurrentTouchCoords[MAX_POINTERS];
|
|
|
|
TouchData mLastTouch;
|
|
PointerCoords mLastTouchCoords[MAX_POINTERS];
|
|
|
|
// The time the primary pointer last went down.
|
|
nsecs_t mDownTime;
|
|
|
|
// The pointer controller, or null if the device is not a pointer.
|
|
sp<PointerControllerInterface> mPointerController;
|
|
|
|
struct LockedState {
|
|
Vector<VirtualKey> virtualKeys;
|
|
|
|
// The surface orientation and width and height set by configureSurfaceLocked().
|
|
int32_t surfaceOrientation;
|
|
int32_t surfaceWidth, surfaceHeight;
|
|
|
|
// The associated display orientation and width and height set by configureSurfaceLocked().
|
|
int32_t associatedDisplayOrientation;
|
|
int32_t associatedDisplayWidth, associatedDisplayHeight;
|
|
|
|
// Translation and scaling factors, orientation-independent.
|
|
float xScale;
|
|
float xPrecision;
|
|
|
|
float yScale;
|
|
float yPrecision;
|
|
|
|
float geometricScale;
|
|
|
|
float toolSizeLinearScale;
|
|
float toolSizeLinearBias;
|
|
float toolSizeAreaScale;
|
|
float toolSizeAreaBias;
|
|
|
|
float pressureScale;
|
|
|
|
float sizeScale;
|
|
|
|
float orientationScale;
|
|
|
|
// Oriented motion ranges for input device info.
|
|
struct OrientedRanges {
|
|
InputDeviceInfo::MotionRange x;
|
|
InputDeviceInfo::MotionRange y;
|
|
|
|
bool havePressure;
|
|
InputDeviceInfo::MotionRange pressure;
|
|
|
|
bool haveSize;
|
|
InputDeviceInfo::MotionRange size;
|
|
|
|
bool haveTouchSize;
|
|
InputDeviceInfo::MotionRange touchMajor;
|
|
InputDeviceInfo::MotionRange touchMinor;
|
|
|
|
bool haveToolSize;
|
|
InputDeviceInfo::MotionRange toolMajor;
|
|
InputDeviceInfo::MotionRange toolMinor;
|
|
|
|
bool haveOrientation;
|
|
InputDeviceInfo::MotionRange orientation;
|
|
} orientedRanges;
|
|
|
|
// Oriented dimensions and precision.
|
|
float orientedSurfaceWidth, orientedSurfaceHeight;
|
|
float orientedXPrecision, orientedYPrecision;
|
|
|
|
struct CurrentVirtualKeyState {
|
|
bool down;
|
|
nsecs_t downTime;
|
|
int32_t keyCode;
|
|
int32_t scanCode;
|
|
} currentVirtualKey;
|
|
|
|
// Scale factor for gesture based pointer movements.
|
|
float pointerGestureXMovementScale;
|
|
float pointerGestureYMovementScale;
|
|
|
|
// Scale factor for gesture based zooming and other freeform motions.
|
|
float pointerGestureXZoomScale;
|
|
float pointerGestureYZoomScale;
|
|
|
|
// The maximum swipe width.
|
|
float pointerGestureMaxSwipeWidth;
|
|
} mLocked;
|
|
|
|
virtual void configureParameters();
|
|
virtual void dumpParameters(String8& dump);
|
|
virtual void configureRawAxes();
|
|
virtual void dumpRawAxes(String8& dump);
|
|
virtual bool configureSurfaceLocked();
|
|
virtual void dumpSurfaceLocked(String8& dump);
|
|
virtual void configureVirtualKeysLocked();
|
|
virtual void dumpVirtualKeysLocked(String8& dump);
|
|
virtual void parseCalibration();
|
|
virtual void resolveCalibration();
|
|
virtual void dumpCalibration(String8& dump);
|
|
|
|
enum TouchResult {
|
|
// Dispatch the touch normally.
|
|
DISPATCH_TOUCH,
|
|
// Do not dispatch the touch, but keep tracking the current stroke.
|
|
SKIP_TOUCH,
|
|
// Do not dispatch the touch, and drop all information associated with the current stoke
|
|
// so the next movement will appear as a new down.
|
|
DROP_STROKE
|
|
};
|
|
|
|
void syncTouch(nsecs_t when, bool havePointerIds);
|
|
|
|
private:
|
|
/* Maximum number of historical samples to average. */
|
|
static const uint32_t AVERAGING_HISTORY_SIZE = 5;
|
|
|
|
/* Slop distance for jumpy pointer detection.
|
|
* The vertical range of the screen divided by this is our epsilon value. */
|
|
static const uint32_t JUMPY_EPSILON_DIVISOR = 212;
|
|
|
|
/* Number of jumpy points to drop for touchscreens that need it. */
|
|
static const uint32_t JUMPY_TRANSITION_DROPS = 3;
|
|
static const uint32_t JUMPY_DROP_LIMIT = 3;
|
|
|
|
/* Maximum squared distance for averaging.
|
|
* If moving farther than this, turn of averaging to avoid lag in response. */
|
|
static const uint64_t AVERAGING_DISTANCE_LIMIT = 75 * 75;
|
|
|
|
struct AveragingTouchFilterState {
|
|
// Individual history tracks are stored by pointer id
|
|
uint32_t historyStart[MAX_POINTERS];
|
|
uint32_t historyEnd[MAX_POINTERS];
|
|
struct {
|
|
struct {
|
|
int32_t x;
|
|
int32_t y;
|
|
int32_t pressure;
|
|
} pointers[MAX_POINTERS];
|
|
} historyData[AVERAGING_HISTORY_SIZE];
|
|
} mAveragingTouchFilter;
|
|
|
|
struct JumpyTouchFilterState {
|
|
uint32_t jumpyPointsDropped;
|
|
} mJumpyTouchFilter;
|
|
|
|
struct PointerDistanceHeapElement {
|
|
uint32_t currentPointerIndex : 8;
|
|
uint32_t lastPointerIndex : 8;
|
|
uint64_t distance : 48; // squared distance
|
|
};
|
|
|
|
struct PointerGesture {
|
|
enum Mode {
|
|
// No fingers, button is not pressed.
|
|
// Nothing happening.
|
|
NEUTRAL,
|
|
|
|
// No fingers, button is not pressed.
|
|
// Tap detected.
|
|
// Emits DOWN and UP events at the pointer location.
|
|
TAP,
|
|
|
|
// Exactly one finger dragging following a tap.
|
|
// Pointer follows the active finger.
|
|
// Emits DOWN, MOVE and UP events at the pointer location.
|
|
//
|
|
// Detect double-taps when the finger goes up while in TAP_DRAG mode.
|
|
TAP_DRAG,
|
|
|
|
// Button is pressed.
|
|
// Pointer follows the active finger if there is one. Other fingers are ignored.
|
|
// Emits DOWN, MOVE and UP events at the pointer location.
|
|
BUTTON_CLICK_OR_DRAG,
|
|
|
|
// Exactly one finger, button is not pressed.
|
|
// Pointer follows the active finger.
|
|
// Emits HOVER_MOVE events at the pointer location.
|
|
//
|
|
// Detect taps when the finger goes up while in HOVER mode.
|
|
HOVER,
|
|
|
|
// Exactly two fingers but neither have moved enough to clearly indicate
|
|
// whether a swipe or freeform gesture was intended. We consider the
|
|
// pointer to be pressed so this enables clicking or long-pressing on buttons.
|
|
// Pointer does not move.
|
|
// Emits DOWN, MOVE and UP events with a single stationary pointer coordinate.
|
|
PRESS,
|
|
|
|
// Exactly two fingers moving in the same direction, button is not pressed.
|
|
// Pointer does not move.
|
|
// Emits DOWN, MOVE and UP events with a single pointer coordinate that
|
|
// follows the midpoint between both fingers.
|
|
SWIPE,
|
|
|
|
// Two or more fingers moving in arbitrary directions, button is not pressed.
|
|
// Pointer does not move.
|
|
// Emits DOWN, POINTER_DOWN, MOVE, POINTER_UP and UP events that follow
|
|
// each finger individually relative to the initial centroid of the finger.
|
|
FREEFORM,
|
|
|
|
// Waiting for quiet time to end before starting the next gesture.
|
|
QUIET,
|
|
};
|
|
|
|
// Time the first finger went down.
|
|
nsecs_t firstTouchTime;
|
|
|
|
// The active pointer id from the raw touch data.
|
|
int32_t activeTouchId; // -1 if none
|
|
|
|
// The active pointer id from the gesture last delivered to the application.
|
|
int32_t activeGestureId; // -1 if none
|
|
|
|
// Pointer coords and ids for the current and previous pointer gesture.
|
|
Mode currentGestureMode;
|
|
BitSet32 currentGestureIdBits;
|
|
uint32_t currentGestureIdToIndex[MAX_POINTER_ID + 1];
|
|
PointerCoords currentGestureCoords[MAX_POINTERS];
|
|
|
|
Mode lastGestureMode;
|
|
BitSet32 lastGestureIdBits;
|
|
uint32_t lastGestureIdToIndex[MAX_POINTER_ID + 1];
|
|
PointerCoords lastGestureCoords[MAX_POINTERS];
|
|
|
|
// Pointer coords and ids for the current spots.
|
|
PointerControllerInterface::SpotGesture spotGesture;
|
|
BitSet32 spotIdBits; // same set of ids as touch ids
|
|
uint32_t spotIdToIndex[MAX_POINTER_ID + 1];
|
|
PointerCoords spotCoords[MAX_POINTERS];
|
|
|
|
// Time the pointer gesture last went down.
|
|
nsecs_t downTime;
|
|
|
|
// Time when the pointer went down for a TAP.
|
|
nsecs_t tapDownTime;
|
|
|
|
// Time when the pointer went up for a TAP.
|
|
nsecs_t tapUpTime;
|
|
|
|
// Location of initial tap.
|
|
float tapX, tapY;
|
|
|
|
// Time we started waiting for quiescence.
|
|
nsecs_t quietTime;
|
|
|
|
// Reference points for multitouch gestures.
|
|
float referenceTouchX; // reference touch X/Y coordinates in surface units
|
|
float referenceTouchY;
|
|
float referenceGestureX; // reference gesture X/Y coordinates in pixels
|
|
float referenceGestureY;
|
|
|
|
// Distance that each pointer has traveled which has not yet been
|
|
// subsumed into the reference gesture position.
|
|
BitSet32 referenceIdBits;
|
|
struct Delta {
|
|
float dx, dy;
|
|
};
|
|
Delta referenceDeltas[MAX_POINTER_ID + 1];
|
|
|
|
// Describes how touch ids are mapped to gesture ids for freeform gestures.
|
|
uint32_t freeformTouchToGestureIdMap[MAX_POINTER_ID + 1];
|
|
|
|
// A velocity tracker for determining whether to switch active pointers during drags.
|
|
VelocityTracker velocityTracker;
|
|
|
|
void reset() {
|
|
firstTouchTime = LLONG_MIN;
|
|
activeTouchId = -1;
|
|
activeGestureId = -1;
|
|
currentGestureMode = NEUTRAL;
|
|
currentGestureIdBits.clear();
|
|
lastGestureMode = NEUTRAL;
|
|
lastGestureIdBits.clear();
|
|
spotGesture = PointerControllerInterface::SPOT_GESTURE_NEUTRAL;
|
|
spotIdBits.clear();
|
|
downTime = 0;
|
|
velocityTracker.clear();
|
|
resetTap();
|
|
resetQuietTime();
|
|
}
|
|
|
|
void resetTap() {
|
|
tapDownTime = LLONG_MIN;
|
|
tapUpTime = LLONG_MIN;
|
|
}
|
|
|
|
void resetQuietTime() {
|
|
quietTime = LLONG_MIN;
|
|
}
|
|
} mPointerGesture;
|
|
|
|
void initializeLocked();
|
|
|
|
TouchResult consumeOffScreenTouches(nsecs_t when, uint32_t policyFlags);
|
|
void dispatchTouches(nsecs_t when, uint32_t policyFlags);
|
|
void prepareTouches(int32_t* outEdgeFlags, float* outXPrecision, float* outYPrecision);
|
|
void dispatchPointerGestures(nsecs_t when, uint32_t policyFlags, bool isTimeout);
|
|
bool preparePointerGestures(nsecs_t when,
|
|
bool* outCancelPreviousGesture, bool* outFinishPreviousGesture, bool isTimeout);
|
|
void moveSpotsLocked();
|
|
|
|
// Dispatches a motion event.
|
|
// If the changedId is >= 0 and the action is POINTER_DOWN or POINTER_UP, the
|
|
// method will take care of setting the index and transmuting the action to DOWN or UP
|
|
// it is the first / last pointer to go down / up.
|
|
void dispatchMotion(nsecs_t when, uint32_t policyFlags, uint32_t source,
|
|
int32_t action, int32_t flags, uint32_t metaState, int32_t edgeFlags,
|
|
const PointerCoords* coords, const uint32_t* idToIndex, BitSet32 idBits,
|
|
int32_t changedId, float xPrecision, float yPrecision, nsecs_t downTime);
|
|
|
|
// Updates pointer coords for pointers with specified ids that have moved.
|
|
// Returns true if any of them changed.
|
|
bool updateMovedPointerCoords(const PointerCoords* inCoords, const uint32_t* inIdToIndex,
|
|
PointerCoords* outCoords, const uint32_t* outIdToIndex, BitSet32 idBits) const;
|
|
|
|
void suppressSwipeOntoVirtualKeys(nsecs_t when);
|
|
|
|
bool isPointInsideSurfaceLocked(int32_t x, int32_t y);
|
|
const VirtualKey* findVirtualKeyHitLocked(int32_t x, int32_t y);
|
|
|
|
bool applyBadTouchFilter();
|
|
bool applyJumpyTouchFilter();
|
|
void applyAveragingTouchFilter();
|
|
void calculatePointerIds();
|
|
};
|
|
|
|
|
|
class SingleTouchInputMapper : public TouchInputMapper {
|
|
public:
|
|
SingleTouchInputMapper(InputDevice* device);
|
|
virtual ~SingleTouchInputMapper();
|
|
|
|
virtual void reset();
|
|
virtual void process(const RawEvent* rawEvent);
|
|
|
|
protected:
|
|
virtual void configureRawAxes();
|
|
|
|
private:
|
|
struct Accumulator {
|
|
enum {
|
|
FIELD_BTN_TOUCH = 1,
|
|
FIELD_ABS_X = 2,
|
|
FIELD_ABS_Y = 4,
|
|
FIELD_ABS_PRESSURE = 8,
|
|
FIELD_ABS_TOOL_WIDTH = 16,
|
|
FIELD_BUTTONS = 32,
|
|
};
|
|
|
|
uint32_t fields;
|
|
|
|
bool btnTouch;
|
|
int32_t absX;
|
|
int32_t absY;
|
|
int32_t absPressure;
|
|
int32_t absToolWidth;
|
|
|
|
uint32_t buttonDown;
|
|
uint32_t buttonUp;
|
|
|
|
inline void clear() {
|
|
fields = 0;
|
|
buttonDown = 0;
|
|
buttonUp = 0;
|
|
}
|
|
} mAccumulator;
|
|
|
|
bool mDown;
|
|
int32_t mX;
|
|
int32_t mY;
|
|
int32_t mPressure;
|
|
int32_t mToolWidth;
|
|
uint32_t mButtonState;
|
|
|
|
void initialize();
|
|
|
|
void sync(nsecs_t when);
|
|
};
|
|
|
|
|
|
class MultiTouchInputMapper : public TouchInputMapper {
|
|
public:
|
|
MultiTouchInputMapper(InputDevice* device);
|
|
virtual ~MultiTouchInputMapper();
|
|
|
|
virtual void reset();
|
|
virtual void process(const RawEvent* rawEvent);
|
|
|
|
protected:
|
|
virtual void configureRawAxes();
|
|
|
|
private:
|
|
struct Accumulator {
|
|
enum {
|
|
FIELD_ABS_MT_POSITION_X = 1,
|
|
FIELD_ABS_MT_POSITION_Y = 2,
|
|
FIELD_ABS_MT_TOUCH_MAJOR = 4,
|
|
FIELD_ABS_MT_TOUCH_MINOR = 8,
|
|
FIELD_ABS_MT_WIDTH_MAJOR = 16,
|
|
FIELD_ABS_MT_WIDTH_MINOR = 32,
|
|
FIELD_ABS_MT_ORIENTATION = 64,
|
|
FIELD_ABS_MT_TRACKING_ID = 128,
|
|
FIELD_ABS_MT_PRESSURE = 256,
|
|
};
|
|
|
|
uint32_t pointerCount;
|
|
struct Pointer {
|
|
uint32_t fields;
|
|
|
|
int32_t absMTPositionX;
|
|
int32_t absMTPositionY;
|
|
int32_t absMTTouchMajor;
|
|
int32_t absMTTouchMinor;
|
|
int32_t absMTWidthMajor;
|
|
int32_t absMTWidthMinor;
|
|
int32_t absMTOrientation;
|
|
int32_t absMTTrackingId;
|
|
int32_t absMTPressure;
|
|
|
|
inline void clear() {
|
|
fields = 0;
|
|
}
|
|
} pointers[MAX_POINTERS + 1]; // + 1 to remove the need for extra range checks
|
|
|
|
// Bitfield of buttons that went down or up.
|
|
uint32_t buttonDown;
|
|
uint32_t buttonUp;
|
|
|
|
inline void clear() {
|
|
pointerCount = 0;
|
|
pointers[0].clear();
|
|
buttonDown = 0;
|
|
buttonUp = 0;
|
|
}
|
|
} mAccumulator;
|
|
|
|
uint32_t mButtonState;
|
|
|
|
void initialize();
|
|
|
|
void sync(nsecs_t when);
|
|
};
|
|
|
|
|
|
class JoystickInputMapper : public InputMapper {
|
|
public:
|
|
JoystickInputMapper(InputDevice* device);
|
|
virtual ~JoystickInputMapper();
|
|
|
|
virtual uint32_t getSources();
|
|
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
|
|
virtual void dump(String8& dump);
|
|
virtual void configure();
|
|
virtual void reset();
|
|
virtual void process(const RawEvent* rawEvent);
|
|
|
|
private:
|
|
struct Axis {
|
|
RawAbsoluteAxisInfo rawAxisInfo;
|
|
AxisInfo axisInfo;
|
|
|
|
bool explicitlyMapped; // true if the axis was explicitly assigned an axis id
|
|
|
|
float scale; // scale factor from raw to normalized values
|
|
float offset; // offset to add after scaling for normalization
|
|
float highScale; // scale factor from raw to normalized values of high split
|
|
float highOffset; // offset to add after scaling for normalization of high split
|
|
|
|
float min; // normalized inclusive minimum
|
|
float max; // normalized inclusive maximum
|
|
float flat; // normalized flat region size
|
|
float fuzz; // normalized error tolerance
|
|
|
|
float filter; // filter out small variations of this size
|
|
float currentValue; // current value
|
|
float newValue; // most recent value
|
|
float highCurrentValue; // current value of high split
|
|
float highNewValue; // most recent value of high split
|
|
|
|
void initialize(const RawAbsoluteAxisInfo& rawAxisInfo, const AxisInfo& axisInfo,
|
|
bool explicitlyMapped, float scale, float offset,
|
|
float highScale, float highOffset,
|
|
float min, float max, float flat, float fuzz) {
|
|
this->rawAxisInfo = rawAxisInfo;
|
|
this->axisInfo = axisInfo;
|
|
this->explicitlyMapped = explicitlyMapped;
|
|
this->scale = scale;
|
|
this->offset = offset;
|
|
this->highScale = highScale;
|
|
this->highOffset = highOffset;
|
|
this->min = min;
|
|
this->max = max;
|
|
this->flat = flat;
|
|
this->fuzz = fuzz;
|
|
this->filter = 0;
|
|
resetValue();
|
|
}
|
|
|
|
void resetValue() {
|
|
this->currentValue = 0;
|
|
this->newValue = 0;
|
|
this->highCurrentValue = 0;
|
|
this->highNewValue = 0;
|
|
}
|
|
};
|
|
|
|
// Axes indexed by raw ABS_* axis index.
|
|
KeyedVector<int32_t, Axis> mAxes;
|
|
|
|
void sync(nsecs_t when, bool force);
|
|
|
|
bool haveAxis(int32_t axisId);
|
|
void pruneAxes(bool ignoreExplicitlyMappedAxes);
|
|
bool filterAxes(bool force);
|
|
|
|
static bool hasValueChangedSignificantly(float filter,
|
|
float newValue, float currentValue, float min, float max);
|
|
static bool hasMovedNearerToValueWithinFilteredRange(float filter,
|
|
float newValue, float currentValue, float thresholdValue);
|
|
|
|
static bool isCenteredAxis(int32_t axis);
|
|
};
|
|
|
|
} // namespace android
|
|
|
|
#endif // _UI_INPUT_READER_H
|