f086ddbb97
Enhanced the input system to support concurrent dispatch of touch events on multiple displays which is required for this to work. Add method to apply offset to PointerCoords. Change-Id: I55fe4a9a8785ae5a2d3341d214fa3c5107f3963a
652 lines
19 KiB
C++
652 lines
19 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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#define LOG_TAG "Input"
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//#define LOG_NDEBUG 0
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#include <math.h>
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#include <limits.h>
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#include <input/Input.h>
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#ifdef HAVE_ANDROID_OS
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#include <binder/Parcel.h>
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#endif
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namespace android {
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// --- InputEvent ---
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void InputEvent::initialize(int32_t deviceId, int32_t source) {
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mDeviceId = deviceId;
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mSource = source;
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}
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void InputEvent::initialize(const InputEvent& from) {
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mDeviceId = from.mDeviceId;
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mSource = from.mSource;
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}
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// --- KeyEvent ---
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bool KeyEvent::hasDefaultAction(int32_t keyCode) {
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switch (keyCode) {
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case AKEYCODE_HOME:
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case AKEYCODE_BACK:
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case AKEYCODE_CALL:
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case AKEYCODE_ENDCALL:
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case AKEYCODE_VOLUME_UP:
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case AKEYCODE_VOLUME_DOWN:
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case AKEYCODE_VOLUME_MUTE:
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case AKEYCODE_POWER:
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case AKEYCODE_CAMERA:
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case AKEYCODE_HEADSETHOOK:
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case AKEYCODE_MENU:
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case AKEYCODE_NOTIFICATION:
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case AKEYCODE_FOCUS:
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case AKEYCODE_SEARCH:
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case AKEYCODE_MEDIA_PLAY:
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case AKEYCODE_MEDIA_PAUSE:
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case AKEYCODE_MEDIA_PLAY_PAUSE:
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case AKEYCODE_MEDIA_STOP:
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case AKEYCODE_MEDIA_NEXT:
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case AKEYCODE_MEDIA_PREVIOUS:
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case AKEYCODE_MEDIA_REWIND:
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case AKEYCODE_MEDIA_RECORD:
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case AKEYCODE_MEDIA_FAST_FORWARD:
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case AKEYCODE_MUTE:
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case AKEYCODE_BRIGHTNESS_DOWN:
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case AKEYCODE_BRIGHTNESS_UP:
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case AKEYCODE_MEDIA_AUDIO_TRACK:
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return true;
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}
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return false;
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}
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bool KeyEvent::hasDefaultAction() const {
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return hasDefaultAction(getKeyCode());
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}
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bool KeyEvent::isSystemKey(int32_t keyCode) {
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switch (keyCode) {
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case AKEYCODE_MENU:
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case AKEYCODE_SOFT_RIGHT:
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case AKEYCODE_HOME:
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case AKEYCODE_BACK:
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case AKEYCODE_CALL:
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case AKEYCODE_ENDCALL:
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case AKEYCODE_VOLUME_UP:
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case AKEYCODE_VOLUME_DOWN:
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case AKEYCODE_VOLUME_MUTE:
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case AKEYCODE_MUTE:
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case AKEYCODE_POWER:
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case AKEYCODE_HEADSETHOOK:
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case AKEYCODE_MEDIA_PLAY:
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case AKEYCODE_MEDIA_PAUSE:
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case AKEYCODE_MEDIA_PLAY_PAUSE:
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case AKEYCODE_MEDIA_STOP:
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case AKEYCODE_MEDIA_NEXT:
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case AKEYCODE_MEDIA_PREVIOUS:
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case AKEYCODE_MEDIA_REWIND:
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case AKEYCODE_MEDIA_RECORD:
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case AKEYCODE_MEDIA_FAST_FORWARD:
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case AKEYCODE_CAMERA:
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case AKEYCODE_FOCUS:
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case AKEYCODE_SEARCH:
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case AKEYCODE_BRIGHTNESS_DOWN:
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case AKEYCODE_BRIGHTNESS_UP:
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case AKEYCODE_MEDIA_AUDIO_TRACK:
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return true;
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}
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return false;
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}
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bool KeyEvent::isSystemKey() const {
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return isSystemKey(getKeyCode());
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}
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void KeyEvent::initialize(
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int32_t deviceId,
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int32_t source,
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int32_t action,
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int32_t flags,
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int32_t keyCode,
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int32_t scanCode,
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int32_t metaState,
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int32_t repeatCount,
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nsecs_t downTime,
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nsecs_t eventTime) {
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InputEvent::initialize(deviceId, source);
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mAction = action;
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mFlags = flags;
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mKeyCode = keyCode;
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mScanCode = scanCode;
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mMetaState = metaState;
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mRepeatCount = repeatCount;
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mDownTime = downTime;
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mEventTime = eventTime;
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}
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void KeyEvent::initialize(const KeyEvent& from) {
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InputEvent::initialize(from);
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mAction = from.mAction;
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mFlags = from.mFlags;
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mKeyCode = from.mKeyCode;
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mScanCode = from.mScanCode;
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mMetaState = from.mMetaState;
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mRepeatCount = from.mRepeatCount;
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mDownTime = from.mDownTime;
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mEventTime = from.mEventTime;
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}
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// --- PointerCoords ---
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float PointerCoords::getAxisValue(int32_t axis) const {
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if (axis < 0 || axis > 63) {
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return 0;
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}
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uint64_t axisBit = 1LL << axis;
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if (!(bits & axisBit)) {
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return 0;
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}
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uint32_t index = __builtin_popcountll(bits & (axisBit - 1LL));
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return values[index];
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}
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status_t PointerCoords::setAxisValue(int32_t axis, float value) {
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if (axis < 0 || axis > 63) {
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return NAME_NOT_FOUND;
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}
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uint64_t axisBit = 1LL << axis;
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uint32_t index = __builtin_popcountll(bits & (axisBit - 1LL));
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if (!(bits & axisBit)) {
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if (value == 0) {
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return OK; // axes with value 0 do not need to be stored
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}
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uint32_t count = __builtin_popcountll(bits);
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if (count >= MAX_AXES) {
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tooManyAxes(axis);
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return NO_MEMORY;
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}
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bits |= axisBit;
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for (uint32_t i = count; i > index; i--) {
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values[i] = values[i - 1];
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}
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}
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values[index] = value;
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return OK;
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}
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static inline void scaleAxisValue(PointerCoords& c, int axis, float scaleFactor) {
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float value = c.getAxisValue(axis);
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if (value != 0) {
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c.setAxisValue(axis, value * scaleFactor);
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}
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}
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void PointerCoords::scale(float scaleFactor) {
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// No need to scale pressure or size since they are normalized.
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// No need to scale orientation since it is meaningless to do so.
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scaleAxisValue(*this, AMOTION_EVENT_AXIS_X, scaleFactor);
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scaleAxisValue(*this, AMOTION_EVENT_AXIS_Y, scaleFactor);
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scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOUCH_MAJOR, scaleFactor);
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scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOUCH_MINOR, scaleFactor);
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scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOOL_MAJOR, scaleFactor);
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scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOOL_MINOR, scaleFactor);
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}
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void PointerCoords::applyOffset(float xOffset, float yOffset) {
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setAxisValue(AMOTION_EVENT_AXIS_X, getX() + xOffset);
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setAxisValue(AMOTION_EVENT_AXIS_Y, getY() + yOffset);
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}
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#ifdef HAVE_ANDROID_OS
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status_t PointerCoords::readFromParcel(Parcel* parcel) {
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bits = parcel->readInt64();
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uint32_t count = __builtin_popcountll(bits);
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if (count > MAX_AXES) {
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return BAD_VALUE;
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}
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for (uint32_t i = 0; i < count; i++) {
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values[i] = parcel->readFloat();
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}
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return OK;
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}
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status_t PointerCoords::writeToParcel(Parcel* parcel) const {
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parcel->writeInt64(bits);
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uint32_t count = __builtin_popcountll(bits);
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for (uint32_t i = 0; i < count; i++) {
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parcel->writeFloat(values[i]);
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}
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return OK;
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}
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#endif
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void PointerCoords::tooManyAxes(int axis) {
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ALOGW("Could not set value for axis %d because the PointerCoords structure is full and "
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"cannot contain more than %d axis values.", axis, int(MAX_AXES));
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}
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bool PointerCoords::operator==(const PointerCoords& other) const {
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if (bits != other.bits) {
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return false;
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}
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uint32_t count = __builtin_popcountll(bits);
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for (uint32_t i = 0; i < count; i++) {
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if (values[i] != other.values[i]) {
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return false;
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}
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}
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return true;
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}
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void PointerCoords::copyFrom(const PointerCoords& other) {
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bits = other.bits;
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uint32_t count = __builtin_popcountll(bits);
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for (uint32_t i = 0; i < count; i++) {
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values[i] = other.values[i];
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}
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}
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// --- PointerProperties ---
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bool PointerProperties::operator==(const PointerProperties& other) const {
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return id == other.id
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&& toolType == other.toolType;
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}
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void PointerProperties::copyFrom(const PointerProperties& other) {
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id = other.id;
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toolType = other.toolType;
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}
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// --- MotionEvent ---
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void MotionEvent::initialize(
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int32_t deviceId,
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int32_t source,
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int32_t action,
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int32_t flags,
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int32_t edgeFlags,
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int32_t metaState,
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int32_t buttonState,
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float xOffset,
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float yOffset,
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float xPrecision,
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float yPrecision,
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nsecs_t downTime,
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nsecs_t eventTime,
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size_t pointerCount,
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const PointerProperties* pointerProperties,
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const PointerCoords* pointerCoords) {
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InputEvent::initialize(deviceId, source);
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mAction = action;
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mFlags = flags;
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mEdgeFlags = edgeFlags;
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mMetaState = metaState;
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mButtonState = buttonState;
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mXOffset = xOffset;
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mYOffset = yOffset;
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mXPrecision = xPrecision;
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mYPrecision = yPrecision;
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mDownTime = downTime;
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mPointerProperties.clear();
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mPointerProperties.appendArray(pointerProperties, pointerCount);
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mSampleEventTimes.clear();
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mSamplePointerCoords.clear();
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addSample(eventTime, pointerCoords);
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}
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void MotionEvent::copyFrom(const MotionEvent* other, bool keepHistory) {
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InputEvent::initialize(other->mDeviceId, other->mSource);
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mAction = other->mAction;
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mFlags = other->mFlags;
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mEdgeFlags = other->mEdgeFlags;
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mMetaState = other->mMetaState;
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mButtonState = other->mButtonState;
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mXOffset = other->mXOffset;
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mYOffset = other->mYOffset;
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mXPrecision = other->mXPrecision;
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mYPrecision = other->mYPrecision;
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mDownTime = other->mDownTime;
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mPointerProperties = other->mPointerProperties;
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if (keepHistory) {
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mSampleEventTimes = other->mSampleEventTimes;
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mSamplePointerCoords = other->mSamplePointerCoords;
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} else {
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mSampleEventTimes.clear();
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mSampleEventTimes.push(other->getEventTime());
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mSamplePointerCoords.clear();
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size_t pointerCount = other->getPointerCount();
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size_t historySize = other->getHistorySize();
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mSamplePointerCoords.appendArray(other->mSamplePointerCoords.array()
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+ (historySize * pointerCount), pointerCount);
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}
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}
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void MotionEvent::addSample(
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int64_t eventTime,
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const PointerCoords* pointerCoords) {
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mSampleEventTimes.push(eventTime);
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mSamplePointerCoords.appendArray(pointerCoords, getPointerCount());
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}
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const PointerCoords* MotionEvent::getRawPointerCoords(size_t pointerIndex) const {
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return &mSamplePointerCoords[getHistorySize() * getPointerCount() + pointerIndex];
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}
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float MotionEvent::getRawAxisValue(int32_t axis, size_t pointerIndex) const {
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return getRawPointerCoords(pointerIndex)->getAxisValue(axis);
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}
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float MotionEvent::getAxisValue(int32_t axis, size_t pointerIndex) const {
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float value = getRawPointerCoords(pointerIndex)->getAxisValue(axis);
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switch (axis) {
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case AMOTION_EVENT_AXIS_X:
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return value + mXOffset;
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case AMOTION_EVENT_AXIS_Y:
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return value + mYOffset;
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}
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return value;
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}
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const PointerCoords* MotionEvent::getHistoricalRawPointerCoords(
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size_t pointerIndex, size_t historicalIndex) const {
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return &mSamplePointerCoords[historicalIndex * getPointerCount() + pointerIndex];
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}
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float MotionEvent::getHistoricalRawAxisValue(int32_t axis, size_t pointerIndex,
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size_t historicalIndex) const {
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return getHistoricalRawPointerCoords(pointerIndex, historicalIndex)->getAxisValue(axis);
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}
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float MotionEvent::getHistoricalAxisValue(int32_t axis, size_t pointerIndex,
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size_t historicalIndex) const {
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float value = getHistoricalRawPointerCoords(pointerIndex, historicalIndex)->getAxisValue(axis);
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switch (axis) {
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case AMOTION_EVENT_AXIS_X:
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return value + mXOffset;
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case AMOTION_EVENT_AXIS_Y:
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return value + mYOffset;
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}
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return value;
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}
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ssize_t MotionEvent::findPointerIndex(int32_t pointerId) const {
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size_t pointerCount = mPointerProperties.size();
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for (size_t i = 0; i < pointerCount; i++) {
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if (mPointerProperties.itemAt(i).id == pointerId) {
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return i;
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}
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}
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return -1;
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}
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void MotionEvent::offsetLocation(float xOffset, float yOffset) {
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mXOffset += xOffset;
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mYOffset += yOffset;
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}
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void MotionEvent::scale(float scaleFactor) {
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mXOffset *= scaleFactor;
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mYOffset *= scaleFactor;
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mXPrecision *= scaleFactor;
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mYPrecision *= scaleFactor;
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size_t numSamples = mSamplePointerCoords.size();
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for (size_t i = 0; i < numSamples; i++) {
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mSamplePointerCoords.editItemAt(i).scale(scaleFactor);
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}
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}
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static void transformPoint(const float matrix[9], float x, float y, float *outX, float *outY) {
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// Apply perspective transform like Skia.
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float newX = matrix[0] * x + matrix[1] * y + matrix[2];
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float newY = matrix[3] * x + matrix[4] * y + matrix[5];
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float newZ = matrix[6] * x + matrix[7] * y + matrix[8];
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if (newZ) {
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newZ = 1.0f / newZ;
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}
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*outX = newX * newZ;
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*outY = newY * newZ;
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}
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static float transformAngle(const float matrix[9], float angleRadians,
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float originX, float originY) {
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// Construct and transform a vector oriented at the specified clockwise angle from vertical.
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// Coordinate system: down is increasing Y, right is increasing X.
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float x = sinf(angleRadians);
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float y = -cosf(angleRadians);
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transformPoint(matrix, x, y, &x, &y);
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x -= originX;
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y -= originY;
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// Derive the transformed vector's clockwise angle from vertical.
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float result = atan2f(x, -y);
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if (result < - M_PI_2) {
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result += M_PI;
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} else if (result > M_PI_2) {
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result -= M_PI;
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}
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return result;
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}
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void MotionEvent::transform(const float matrix[9]) {
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// The tricky part of this implementation is to preserve the value of
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// rawX and rawY. So we apply the transformation to the first point
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// then derive an appropriate new X/Y offset that will preserve rawX
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// and rawY for that point.
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float oldXOffset = mXOffset;
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float oldYOffset = mYOffset;
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float newX, newY;
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float rawX = getRawX(0);
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float rawY = getRawY(0);
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transformPoint(matrix, rawX + oldXOffset, rawY + oldYOffset, &newX, &newY);
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mXOffset = newX - rawX;
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mYOffset = newY - rawY;
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// Determine how the origin is transformed by the matrix so that we
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// can transform orientation vectors.
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float originX, originY;
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transformPoint(matrix, 0, 0, &originX, &originY);
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// Apply the transformation to all samples.
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size_t numSamples = mSamplePointerCoords.size();
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for (size_t i = 0; i < numSamples; i++) {
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PointerCoords& c = mSamplePointerCoords.editItemAt(i);
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float x = c.getAxisValue(AMOTION_EVENT_AXIS_X) + oldXOffset;
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float y = c.getAxisValue(AMOTION_EVENT_AXIS_Y) + oldYOffset;
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transformPoint(matrix, x, y, &x, &y);
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c.setAxisValue(AMOTION_EVENT_AXIS_X, x - mXOffset);
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c.setAxisValue(AMOTION_EVENT_AXIS_Y, y - mYOffset);
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float orientation = c.getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION);
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c.setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION,
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transformAngle(matrix, orientation, originX, originY));
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}
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}
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#ifdef HAVE_ANDROID_OS
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status_t MotionEvent::readFromParcel(Parcel* parcel) {
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size_t pointerCount = parcel->readInt32();
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size_t sampleCount = parcel->readInt32();
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if (pointerCount == 0 || pointerCount > MAX_POINTERS || sampleCount == 0) {
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return BAD_VALUE;
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}
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mDeviceId = parcel->readInt32();
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mSource = parcel->readInt32();
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mAction = parcel->readInt32();
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mFlags = parcel->readInt32();
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mEdgeFlags = parcel->readInt32();
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|
mMetaState = parcel->readInt32();
|
|
mButtonState = parcel->readInt32();
|
|
mXOffset = parcel->readFloat();
|
|
mYOffset = parcel->readFloat();
|
|
mXPrecision = parcel->readFloat();
|
|
mYPrecision = parcel->readFloat();
|
|
mDownTime = parcel->readInt64();
|
|
|
|
mPointerProperties.clear();
|
|
mPointerProperties.setCapacity(pointerCount);
|
|
mSampleEventTimes.clear();
|
|
mSampleEventTimes.setCapacity(sampleCount);
|
|
mSamplePointerCoords.clear();
|
|
mSamplePointerCoords.setCapacity(sampleCount * pointerCount);
|
|
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
mPointerProperties.push();
|
|
PointerProperties& properties = mPointerProperties.editTop();
|
|
properties.id = parcel->readInt32();
|
|
properties.toolType = parcel->readInt32();
|
|
}
|
|
|
|
while (sampleCount-- > 0) {
|
|
mSampleEventTimes.push(parcel->readInt64());
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
mSamplePointerCoords.push();
|
|
status_t status = mSamplePointerCoords.editTop().readFromParcel(parcel);
|
|
if (status) {
|
|
return status;
|
|
}
|
|
}
|
|
}
|
|
return OK;
|
|
}
|
|
|
|
status_t MotionEvent::writeToParcel(Parcel* parcel) const {
|
|
size_t pointerCount = mPointerProperties.size();
|
|
size_t sampleCount = mSampleEventTimes.size();
|
|
|
|
parcel->writeInt32(pointerCount);
|
|
parcel->writeInt32(sampleCount);
|
|
|
|
parcel->writeInt32(mDeviceId);
|
|
parcel->writeInt32(mSource);
|
|
parcel->writeInt32(mAction);
|
|
parcel->writeInt32(mFlags);
|
|
parcel->writeInt32(mEdgeFlags);
|
|
parcel->writeInt32(mMetaState);
|
|
parcel->writeInt32(mButtonState);
|
|
parcel->writeFloat(mXOffset);
|
|
parcel->writeFloat(mYOffset);
|
|
parcel->writeFloat(mXPrecision);
|
|
parcel->writeFloat(mYPrecision);
|
|
parcel->writeInt64(mDownTime);
|
|
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
const PointerProperties& properties = mPointerProperties.itemAt(i);
|
|
parcel->writeInt32(properties.id);
|
|
parcel->writeInt32(properties.toolType);
|
|
}
|
|
|
|
const PointerCoords* pc = mSamplePointerCoords.array();
|
|
for (size_t h = 0; h < sampleCount; h++) {
|
|
parcel->writeInt64(mSampleEventTimes.itemAt(h));
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
status_t status = (pc++)->writeToParcel(parcel);
|
|
if (status) {
|
|
return status;
|
|
}
|
|
}
|
|
}
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
bool MotionEvent::isTouchEvent(int32_t source, int32_t action) {
|
|
if (source & AINPUT_SOURCE_CLASS_POINTER) {
|
|
// Specifically excludes HOVER_MOVE and SCROLL.
|
|
switch (action & AMOTION_EVENT_ACTION_MASK) {
|
|
case AMOTION_EVENT_ACTION_DOWN:
|
|
case AMOTION_EVENT_ACTION_MOVE:
|
|
case AMOTION_EVENT_ACTION_UP:
|
|
case AMOTION_EVENT_ACTION_POINTER_DOWN:
|
|
case AMOTION_EVENT_ACTION_POINTER_UP:
|
|
case AMOTION_EVENT_ACTION_CANCEL:
|
|
case AMOTION_EVENT_ACTION_OUTSIDE:
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// --- PooledInputEventFactory ---
|
|
|
|
PooledInputEventFactory::PooledInputEventFactory(size_t maxPoolSize) :
|
|
mMaxPoolSize(maxPoolSize) {
|
|
}
|
|
|
|
PooledInputEventFactory::~PooledInputEventFactory() {
|
|
for (size_t i = 0; i < mKeyEventPool.size(); i++) {
|
|
delete mKeyEventPool.itemAt(i);
|
|
}
|
|
for (size_t i = 0; i < mMotionEventPool.size(); i++) {
|
|
delete mMotionEventPool.itemAt(i);
|
|
}
|
|
}
|
|
|
|
KeyEvent* PooledInputEventFactory::createKeyEvent() {
|
|
if (!mKeyEventPool.isEmpty()) {
|
|
KeyEvent* event = mKeyEventPool.top();
|
|
mKeyEventPool.pop();
|
|
return event;
|
|
}
|
|
return new KeyEvent();
|
|
}
|
|
|
|
MotionEvent* PooledInputEventFactory::createMotionEvent() {
|
|
if (!mMotionEventPool.isEmpty()) {
|
|
MotionEvent* event = mMotionEventPool.top();
|
|
mMotionEventPool.pop();
|
|
return event;
|
|
}
|
|
return new MotionEvent();
|
|
}
|
|
|
|
void PooledInputEventFactory::recycle(InputEvent* event) {
|
|
switch (event->getType()) {
|
|
case AINPUT_EVENT_TYPE_KEY:
|
|
if (mKeyEventPool.size() < mMaxPoolSize) {
|
|
mKeyEventPool.push(static_cast<KeyEvent*>(event));
|
|
return;
|
|
}
|
|
break;
|
|
case AINPUT_EVENT_TYPE_MOTION:
|
|
if (mMotionEventPool.size() < mMaxPoolSize) {
|
|
mMotionEventPool.push(static_cast<MotionEvent*>(event));
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
delete event;
|
|
}
|
|
|
|
} // namespace android
|