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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /widget/gonk/libui/Input.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'widget/gonk/libui/Input.cpp')
-rw-r--r--widget/gonk/libui/Input.cpp635
1 files changed, 635 insertions, 0 deletions
diff --git a/widget/gonk/libui/Input.cpp b/widget/gonk/libui/Input.cpp
new file mode 100644
index 000000000..2208191e6
--- /dev/null
+++ b/widget/gonk/libui/Input.cpp
@@ -0,0 +1,635 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Input"
+//#define LOG_NDEBUG 0
+#include "cutils_log.h"
+
+#include <math.h>
+#include <limits.h>
+
+#include "Input.h"
+
+#ifdef HAVE_ANDROID_OS
+#include <binder/Parcel.h>
+
+#include "SkPoint.h"
+#include "SkMatrix.h"
+#include "SkScalar.h"
+#endif
+
+namespace android {
+
+// --- InputEvent ---
+
+void InputEvent::initialize(int32_t deviceId, int32_t source) {
+ mDeviceId = deviceId;
+ mSource = source;
+}
+
+void InputEvent::initialize(const InputEvent& from) {
+ mDeviceId = from.mDeviceId;
+ mSource = from.mSource;
+}
+
+// --- KeyEvent ---
+
+bool KeyEvent::hasDefaultAction(int32_t keyCode) {
+ switch (keyCode) {
+ case AKEYCODE_HOME:
+ case AKEYCODE_BACK:
+ case AKEYCODE_CALL:
+ case AKEYCODE_ENDCALL:
+ case AKEYCODE_VOLUME_UP:
+ case AKEYCODE_VOLUME_DOWN:
+ case AKEYCODE_VOLUME_MUTE:
+ case AKEYCODE_POWER:
+ case AKEYCODE_CAMERA:
+ case AKEYCODE_HEADSETHOOK:
+ case AKEYCODE_MENU:
+ case AKEYCODE_NOTIFICATION:
+ case AKEYCODE_FOCUS:
+ case AKEYCODE_SEARCH:
+ case AKEYCODE_MEDIA_PLAY:
+ case AKEYCODE_MEDIA_PAUSE:
+ case AKEYCODE_MEDIA_PLAY_PAUSE:
+ case AKEYCODE_MEDIA_STOP:
+ case AKEYCODE_MEDIA_NEXT:
+ case AKEYCODE_MEDIA_PREVIOUS:
+ case AKEYCODE_MEDIA_REWIND:
+ case AKEYCODE_MEDIA_RECORD:
+ case AKEYCODE_MEDIA_FAST_FORWARD:
+ case AKEYCODE_MUTE:
+ case AKEYCODE_BRIGHTNESS_DOWN:
+ case AKEYCODE_BRIGHTNESS_UP:
+ return true;
+ }
+
+ return false;
+}
+
+bool KeyEvent::hasDefaultAction() const {
+ return hasDefaultAction(getKeyCode());
+}
+
+bool KeyEvent::isSystemKey(int32_t keyCode) {
+ switch (keyCode) {
+ case AKEYCODE_MENU:
+ case AKEYCODE_SOFT_RIGHT:
+ case AKEYCODE_HOME:
+ case AKEYCODE_BACK:
+ case AKEYCODE_CALL:
+ case AKEYCODE_ENDCALL:
+ case AKEYCODE_VOLUME_UP:
+ case AKEYCODE_VOLUME_DOWN:
+ case AKEYCODE_VOLUME_MUTE:
+ case AKEYCODE_MUTE:
+ case AKEYCODE_POWER:
+ case AKEYCODE_HEADSETHOOK:
+ case AKEYCODE_MEDIA_PLAY:
+ case AKEYCODE_MEDIA_PAUSE:
+ case AKEYCODE_MEDIA_PLAY_PAUSE:
+ case AKEYCODE_MEDIA_STOP:
+ case AKEYCODE_MEDIA_NEXT:
+ case AKEYCODE_MEDIA_PREVIOUS:
+ case AKEYCODE_MEDIA_REWIND:
+ case AKEYCODE_MEDIA_RECORD:
+ case AKEYCODE_MEDIA_FAST_FORWARD:
+ case AKEYCODE_CAMERA:
+ case AKEYCODE_FOCUS:
+ case AKEYCODE_SEARCH:
+ case AKEYCODE_BRIGHTNESS_DOWN:
+ case AKEYCODE_BRIGHTNESS_UP:
+ return true;
+ }
+
+ return false;
+}
+
+bool KeyEvent::isSystemKey() const {
+ return isSystemKey(getKeyCode());
+}
+
+void KeyEvent::initialize(
+ int32_t deviceId,
+ int32_t source,
+ int32_t action,
+ int32_t flags,
+ int32_t keyCode,
+ int32_t scanCode,
+ int32_t metaState,
+ int32_t repeatCount,
+ nsecs_t downTime,
+ nsecs_t eventTime) {
+ InputEvent::initialize(deviceId, source);
+ mAction = action;
+ mFlags = flags;
+ mKeyCode = keyCode;
+ mScanCode = scanCode;
+ mMetaState = metaState;
+ mRepeatCount = repeatCount;
+ mDownTime = downTime;
+ mEventTime = eventTime;
+}
+
+void KeyEvent::initialize(const KeyEvent& from) {
+ InputEvent::initialize(from);
+ mAction = from.mAction;
+ mFlags = from.mFlags;
+ mKeyCode = from.mKeyCode;
+ mScanCode = from.mScanCode;
+ mMetaState = from.mMetaState;
+ mRepeatCount = from.mRepeatCount;
+ mDownTime = from.mDownTime;
+ mEventTime = from.mEventTime;
+}
+
+
+// --- PointerCoords ---
+
+float PointerCoords::getAxisValue(int32_t axis) const {
+ if (axis < 0 || axis > 63) {
+ return 0;
+ }
+
+ uint64_t axisBit = 1LL << axis;
+ if (!(bits & axisBit)) {
+ return 0;
+ }
+ uint32_t index = __builtin_popcountll(bits & (axisBit - 1LL));
+ return values[index];
+}
+
+status_t PointerCoords::setAxisValue(int32_t axis, float value) {
+ if (axis < 0 || axis > 63) {
+ return NAME_NOT_FOUND;
+ }
+
+ uint64_t axisBit = 1LL << axis;
+ uint32_t index = __builtin_popcountll(bits & (axisBit - 1LL));
+ if (!(bits & axisBit)) {
+ if (value == 0) {
+ return OK; // axes with value 0 do not need to be stored
+ }
+ uint32_t count = __builtin_popcountll(bits);
+ if (count >= MAX_AXES) {
+ tooManyAxes(axis);
+ return NO_MEMORY;
+ }
+ bits |= axisBit;
+ for (uint32_t i = count; i > index; i--) {
+ values[i] = values[i - 1];
+ }
+ }
+ values[index] = value;
+ return OK;
+}
+
+static inline void scaleAxisValue(PointerCoords& c, int axis, float scaleFactor) {
+ float value = c.getAxisValue(axis);
+ if (value != 0) {
+ c.setAxisValue(axis, value * scaleFactor);
+ }
+}
+
+void PointerCoords::scale(float scaleFactor) {
+ // No need to scale pressure or size since they are normalized.
+ // No need to scale orientation since it is meaningless to do so.
+ scaleAxisValue(*this, AMOTION_EVENT_AXIS_X, scaleFactor);
+ scaleAxisValue(*this, AMOTION_EVENT_AXIS_Y, scaleFactor);
+ scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOUCH_MAJOR, scaleFactor);
+ scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOUCH_MINOR, scaleFactor);
+ scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOOL_MAJOR, scaleFactor);
+ scaleAxisValue(*this, AMOTION_EVENT_AXIS_TOOL_MINOR, scaleFactor);
+}
+
+#ifdef HAVE_ANDROID_OS
+status_t PointerCoords::readFromParcel(Parcel* parcel) {
+ bits = parcel->readInt64();
+
+ uint32_t count = __builtin_popcountll(bits);
+ if (count > MAX_AXES) {
+ return BAD_VALUE;
+ }
+
+ for (uint32_t i = 0; i < count; i++) {
+ values[i] = parcel->readFloat();
+ }
+ return OK;
+}
+
+status_t PointerCoords::writeToParcel(Parcel* parcel) const {
+ parcel->writeInt64(bits);
+
+ uint32_t count = __builtin_popcountll(bits);
+ for (uint32_t i = 0; i < count; i++) {
+ parcel->writeFloat(values[i]);
+ }
+ return OK;
+}
+#endif
+
+void PointerCoords::tooManyAxes(int axis) {
+ ALOGW("Could not set value for axis %d because the PointerCoords structure is full and "
+ "cannot contain more than %d axis values.", axis, int(MAX_AXES));
+}
+
+bool PointerCoords::operator==(const PointerCoords& other) const {
+ if (bits != other.bits) {
+ return false;
+ }
+ uint32_t count = __builtin_popcountll(bits);
+ for (uint32_t i = 0; i < count; i++) {
+ if (values[i] != other.values[i]) {
+ return false;
+ }
+ }
+ return true;
+}
+
+void PointerCoords::copyFrom(const PointerCoords& other) {
+ bits = other.bits;
+ uint32_t count = __builtin_popcountll(bits);
+ for (uint32_t i = 0; i < count; i++) {
+ values[i] = other.values[i];
+ }
+}
+
+
+// --- PointerProperties ---
+
+bool PointerProperties::operator==(const PointerProperties& other) const {
+ return id == other.id
+ && toolType == other.toolType;
+}
+
+void PointerProperties::copyFrom(const PointerProperties& other) {
+ id = other.id;
+ toolType = other.toolType;
+}
+
+
+// --- MotionEvent ---
+
+void MotionEvent::initialize(
+ int32_t deviceId,
+ int32_t source,
+ int32_t action,
+ int32_t flags,
+ int32_t edgeFlags,
+ int32_t metaState,
+ int32_t buttonState,
+ float xOffset,
+ float yOffset,
+ float xPrecision,
+ float yPrecision,
+ nsecs_t downTime,
+ nsecs_t eventTime,
+ size_t pointerCount,
+ const PointerProperties* pointerProperties,
+ const PointerCoords* pointerCoords) {
+ InputEvent::initialize(deviceId, source);
+ mAction = action;
+ mFlags = flags;
+ mEdgeFlags = edgeFlags;
+ mMetaState = metaState;
+ mButtonState = buttonState;
+ mXOffset = xOffset;
+ mYOffset = yOffset;
+ mXPrecision = xPrecision;
+ mYPrecision = yPrecision;
+ mDownTime = downTime;
+ mPointerProperties.clear();
+ mPointerProperties.appendArray(pointerProperties, pointerCount);
+ mSampleEventTimes.clear();
+ mSamplePointerCoords.clear();
+ addSample(eventTime, pointerCoords);
+}
+
+void MotionEvent::copyFrom(const MotionEvent* other, bool keepHistory) {
+ InputEvent::initialize(other->mDeviceId, other->mSource);
+ mAction = other->mAction;
+ mFlags = other->mFlags;
+ mEdgeFlags = other->mEdgeFlags;
+ mMetaState = other->mMetaState;
+ mButtonState = other->mButtonState;
+ mXOffset = other->mXOffset;
+ mYOffset = other->mYOffset;
+ mXPrecision = other->mXPrecision;
+ mYPrecision = other->mYPrecision;
+ mDownTime = other->mDownTime;
+ mPointerProperties = other->mPointerProperties;
+
+ if (keepHistory) {
+ mSampleEventTimes = other->mSampleEventTimes;
+ mSamplePointerCoords = other->mSamplePointerCoords;
+ } else {
+ mSampleEventTimes.clear();
+ mSampleEventTimes.push(other->getEventTime());
+ mSamplePointerCoords.clear();
+ size_t pointerCount = other->getPointerCount();
+ size_t historySize = other->getHistorySize();
+ mSamplePointerCoords.appendArray(other->mSamplePointerCoords.array()
+ + (historySize * pointerCount), pointerCount);
+ }
+}
+
+void MotionEvent::addSample(
+ int64_t eventTime,
+ const PointerCoords* pointerCoords) {
+ mSampleEventTimes.push(eventTime);
+ mSamplePointerCoords.appendArray(pointerCoords, getPointerCount());
+}
+
+const PointerCoords* MotionEvent::getRawPointerCoords(size_t pointerIndex) const {
+ return &mSamplePointerCoords[getHistorySize() * getPointerCount() + pointerIndex];
+}
+
+float MotionEvent::getRawAxisValue(int32_t axis, size_t pointerIndex) const {
+ return getRawPointerCoords(pointerIndex)->getAxisValue(axis);
+}
+
+float MotionEvent::getAxisValue(int32_t axis, size_t pointerIndex) const {
+ float value = getRawPointerCoords(pointerIndex)->getAxisValue(axis);
+ switch (axis) {
+ case AMOTION_EVENT_AXIS_X:
+ return value + mXOffset;
+ case AMOTION_EVENT_AXIS_Y:
+ return value + mYOffset;
+ }
+ return value;
+}
+
+const PointerCoords* MotionEvent::getHistoricalRawPointerCoords(
+ size_t pointerIndex, size_t historicalIndex) const {
+ return &mSamplePointerCoords[historicalIndex * getPointerCount() + pointerIndex];
+}
+
+float MotionEvent::getHistoricalRawAxisValue(int32_t axis, size_t pointerIndex,
+ size_t historicalIndex) const {
+ return getHistoricalRawPointerCoords(pointerIndex, historicalIndex)->getAxisValue(axis);
+}
+
+float MotionEvent::getHistoricalAxisValue(int32_t axis, size_t pointerIndex,
+ size_t historicalIndex) const {
+ float value = getHistoricalRawPointerCoords(pointerIndex, historicalIndex)->getAxisValue(axis);
+ switch (axis) {
+ case AMOTION_EVENT_AXIS_X:
+ return value + mXOffset;
+ case AMOTION_EVENT_AXIS_Y:
+ return value + mYOffset;
+ }
+ return value;
+}
+
+ssize_t MotionEvent::findPointerIndex(int32_t pointerId) const {
+ size_t pointerCount = mPointerProperties.size();
+ for (size_t i = 0; i < pointerCount; i++) {
+ if (mPointerProperties.itemAt(i).id == pointerId) {
+ return i;
+ }
+ }
+ return -1;
+}
+
+void MotionEvent::offsetLocation(float xOffset, float yOffset) {
+ mXOffset += xOffset;
+ mYOffset += yOffset;
+}
+
+void MotionEvent::scale(float scaleFactor) {
+ mXOffset *= scaleFactor;
+ mYOffset *= scaleFactor;
+ mXPrecision *= scaleFactor;
+ mYPrecision *= scaleFactor;
+
+ size_t numSamples = mSamplePointerCoords.size();
+ for (size_t i = 0; i < numSamples; i++) {
+ mSamplePointerCoords.editItemAt(i).scale(scaleFactor);
+ }
+}
+
+#ifdef HAVE_ANDROID_OS
+static inline float transformAngle(const SkMatrix* matrix, float angleRadians) {
+ // Construct and transform a vector oriented at the specified clockwise angle from vertical.
+ // Coordinate system: down is increasing Y, right is increasing X.
+ SkPoint vector;
+ vector.fX = SkFloatToScalar(sinf(angleRadians));
+ vector.fY = SkFloatToScalar(-cosf(angleRadians));
+ matrix->mapVectors(& vector, 1);
+
+ // Derive the transformed vector's clockwise angle from vertical.
+ float result = atan2f(SkScalarToFloat(vector.fX), SkScalarToFloat(-vector.fY));
+ if (result < - M_PI_2) {
+ result += M_PI;
+ } else if (result > M_PI_2) {
+ result -= M_PI;
+ }
+ return result;
+}
+
+void MotionEvent::transform(const SkMatrix* matrix) {
+ float oldXOffset = mXOffset;
+ float oldYOffset = mYOffset;
+
+ // The tricky part of this implementation is to preserve the value of
+ // rawX and rawY. So we apply the transformation to the first point
+ // then derive an appropriate new X/Y offset that will preserve rawX and rawY.
+ SkPoint point;
+ float rawX = getRawX(0);
+ float rawY = getRawY(0);
+ matrix->mapXY(SkFloatToScalar(rawX + oldXOffset), SkFloatToScalar(rawY + oldYOffset),
+ & point);
+ float newX = SkScalarToFloat(point.fX);
+ float newY = SkScalarToFloat(point.fY);
+ float newXOffset = newX - rawX;
+ float newYOffset = newY - rawY;
+
+ mXOffset = newXOffset;
+ mYOffset = newYOffset;
+
+ // Apply the transformation to all samples.
+ size_t numSamples = mSamplePointerCoords.size();
+ for (size_t i = 0; i < numSamples; i++) {
+ PointerCoords& c = mSamplePointerCoords.editItemAt(i);
+ float x = c.getAxisValue(AMOTION_EVENT_AXIS_X) + oldXOffset;
+ float y = c.getAxisValue(AMOTION_EVENT_AXIS_Y) + oldYOffset;
+ matrix->mapXY(SkFloatToScalar(x), SkFloatToScalar(y), &point);
+ c.setAxisValue(AMOTION_EVENT_AXIS_X, SkScalarToFloat(point.fX) - newXOffset);
+ c.setAxisValue(AMOTION_EVENT_AXIS_Y, SkScalarToFloat(point.fY) - newYOffset);
+
+ float orientation = c.getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION);
+ c.setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, transformAngle(matrix, orientation));
+ }
+}
+
+status_t MotionEvent::readFromParcel(Parcel* parcel) {
+ size_t pointerCount = parcel->readInt32();
+ size_t sampleCount = parcel->readInt32();
+ if (pointerCount == 0 || pointerCount > MAX_POINTERS || sampleCount == 0) {
+ return BAD_VALUE;
+ }
+
+ mDeviceId = parcel->readInt32();
+ mSource = parcel->readInt32();
+ mAction = parcel->readInt32();
+ mFlags = parcel->readInt32();
+ mEdgeFlags = parcel->readInt32();
+ 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