/*
 * Copyright (C) 2011 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 "InputListener"

#define ATRACE_TAG ATRACE_TAG_INPUT

//#define LOG_NDEBUG 0

#include "InputListener.h"

#include <android-base/stringprintf.h>
#include <android/log.h>
#include <math.h>
#include <utils/Trace.h>

using android::base::StringPrintf;

namespace android {

// --- NotifyConfigurationChangedArgs ---

NotifyConfigurationChangedArgs::NotifyConfigurationChangedArgs(int32_t id, nsecs_t eventTime)
      : NotifyArgs(id, eventTime) {}

NotifyConfigurationChangedArgs::NotifyConfigurationChangedArgs(
        const NotifyConfigurationChangedArgs& other)
      : NotifyArgs(other.id, other.eventTime) {}

bool NotifyConfigurationChangedArgs::operator==(const NotifyConfigurationChangedArgs& rhs) const {
    return id == rhs.id && eventTime == rhs.eventTime;
}

void NotifyConfigurationChangedArgs::notify(const sp<InputListenerInterface>& listener) const {
    listener->notifyConfigurationChanged(this);
}


// --- NotifyKeyArgs ---

NotifyKeyArgs::NotifyKeyArgs(int32_t id, nsecs_t eventTime, int32_t deviceId, uint32_t source,
                             int32_t displayId, uint32_t policyFlags, int32_t action, int32_t flags,
                             int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime)
      : NotifyArgs(id, eventTime),
        deviceId(deviceId),
        source(source),
        displayId(displayId),
        policyFlags(policyFlags),
        action(action),
        flags(flags),
        keyCode(keyCode),
        scanCode(scanCode),
        metaState(metaState),
        downTime(downTime) {}

NotifyKeyArgs::NotifyKeyArgs(const NotifyKeyArgs& other)
      : NotifyArgs(other.id, other.eventTime),
        deviceId(other.deviceId),
        source(other.source),
        displayId(other.displayId),
        policyFlags(other.policyFlags),
        action(other.action),
        flags(other.flags),
        keyCode(other.keyCode),
        scanCode(other.scanCode),
        metaState(other.metaState),
        downTime(other.downTime) {}

bool NotifyKeyArgs::operator==(const NotifyKeyArgs& rhs) const {
    return id == rhs.id && eventTime == rhs.eventTime && deviceId == rhs.deviceId &&
            source == rhs.source && displayId == rhs.displayId && policyFlags == rhs.policyFlags &&
            action == rhs.action && flags == rhs.flags && keyCode == rhs.keyCode &&
            scanCode == rhs.scanCode && metaState == rhs.metaState && downTime == rhs.downTime;
}

void NotifyKeyArgs::notify(const sp<InputListenerInterface>& listener) const {
    listener->notifyKey(this);
}


// --- NotifyMotionArgs ---

NotifyMotionArgs::NotifyMotionArgs(int32_t id, nsecs_t eventTime, int32_t deviceId, uint32_t source,
                                   int32_t displayId, uint32_t policyFlags, int32_t action,
                                   int32_t actionButton, int32_t flags, int32_t metaState,
                                   int32_t buttonState, MotionClassification classification,
                                   int32_t edgeFlags, uint32_t pointerCount,
                                   const PointerProperties* pointerProperties,
                                   const PointerCoords* pointerCoords, float xPrecision,
                                   float yPrecision, float xCursorPosition, float yCursorPosition,
                                   nsecs_t downTime,
                                   const std::vector<TouchVideoFrame>& videoFrames)
      : NotifyArgs(id, eventTime),
        deviceId(deviceId),
        source(source),
        displayId(displayId),
        policyFlags(policyFlags),
        action(action),
        actionButton(actionButton),
        flags(flags),
        metaState(metaState),
        buttonState(buttonState),
        classification(classification),
        edgeFlags(edgeFlags),
        pointerCount(pointerCount),
        xPrecision(xPrecision),
        yPrecision(yPrecision),
        xCursorPosition(xCursorPosition),
        yCursorPosition(yCursorPosition),
        downTime(downTime),
        videoFrames(videoFrames) {
    for (uint32_t i = 0; i < pointerCount; i++) {
        this->pointerProperties[i].copyFrom(pointerProperties[i]);
        this->pointerCoords[i].copyFrom(pointerCoords[i]);
    }
}

NotifyMotionArgs::NotifyMotionArgs(const NotifyMotionArgs& other)
      : NotifyArgs(other.id, other.eventTime),
        deviceId(other.deviceId),
        source(other.source),
        displayId(other.displayId),
        policyFlags(other.policyFlags),
        action(other.action),
        actionButton(other.actionButton),
        flags(other.flags),
        metaState(other.metaState),
        buttonState(other.buttonState),
        classification(other.classification),
        edgeFlags(other.edgeFlags),
        pointerCount(other.pointerCount),
        xPrecision(other.xPrecision),
        yPrecision(other.yPrecision),
        xCursorPosition(other.xCursorPosition),
        yCursorPosition(other.yCursorPosition),
        downTime(other.downTime),
        videoFrames(other.videoFrames) {
    for (uint32_t i = 0; i < pointerCount; i++) {
        pointerProperties[i].copyFrom(other.pointerProperties[i]);
        pointerCoords[i].copyFrom(other.pointerCoords[i]);
    }
}

static inline bool isCursorPositionEqual(float lhs, float rhs) {
    return (isnan(lhs) && isnan(rhs)) || lhs == rhs;
}

bool NotifyMotionArgs::operator==(const NotifyMotionArgs& rhs) const {
    bool equal = id == rhs.id && eventTime == rhs.eventTime && deviceId == rhs.deviceId &&
            source == rhs.source && displayId == rhs.displayId && policyFlags == rhs.policyFlags &&
            action == rhs.action && actionButton == rhs.actionButton && flags == rhs.flags &&
            metaState == rhs.metaState && buttonState == rhs.buttonState &&
            classification == rhs.classification && edgeFlags == rhs.edgeFlags &&
            pointerCount == rhs.pointerCount
            // PointerProperties and PointerCoords are compared separately below
            && xPrecision == rhs.xPrecision && yPrecision == rhs.yPrecision &&
            isCursorPositionEqual(xCursorPosition, rhs.xCursorPosition) &&
            isCursorPositionEqual(yCursorPosition, rhs.yCursorPosition) &&
            downTime == rhs.downTime && videoFrames == rhs.videoFrames;
    if (!equal) {
        return false;
    }

    for (size_t i = 0; i < pointerCount; i++) {
        equal =
                pointerProperties[i] == rhs.pointerProperties[i]
                && pointerCoords[i] == rhs.pointerCoords[i];
        if (!equal) {
            return false;
        }
    }
    return true;
}

void NotifyMotionArgs::notify(const sp<InputListenerInterface>& listener) const {
    listener->notifyMotion(this);
}


// --- NotifySwitchArgs ---

NotifySwitchArgs::NotifySwitchArgs(int32_t id, nsecs_t eventTime, uint32_t policyFlags,
                                   uint32_t switchValues, uint32_t switchMask)
      : NotifyArgs(id, eventTime),
        policyFlags(policyFlags),
        switchValues(switchValues),
        switchMask(switchMask) {}

NotifySwitchArgs::NotifySwitchArgs(const NotifySwitchArgs& other)
      : NotifyArgs(other.id, other.eventTime),
        policyFlags(other.policyFlags),
        switchValues(other.switchValues),
        switchMask(other.switchMask) {}

bool NotifySwitchArgs::operator==(const NotifySwitchArgs rhs) const {
    return id == rhs.id && eventTime == rhs.eventTime && policyFlags == rhs.policyFlags &&
            switchValues == rhs.switchValues && switchMask == rhs.switchMask;
}

void NotifySwitchArgs::notify(const sp<InputListenerInterface>& listener) const {
    listener->notifySwitch(this);
}


// --- NotifyDeviceResetArgs ---

NotifyDeviceResetArgs::NotifyDeviceResetArgs(int32_t id, nsecs_t eventTime, int32_t deviceId)
      : NotifyArgs(id, eventTime), deviceId(deviceId) {}

NotifyDeviceResetArgs::NotifyDeviceResetArgs(const NotifyDeviceResetArgs& other)
      : NotifyArgs(other.id, other.eventTime), deviceId(other.deviceId) {}

bool NotifyDeviceResetArgs::operator==(const NotifyDeviceResetArgs& rhs) const {
    return id == rhs.id && eventTime == rhs.eventTime && deviceId == rhs.deviceId;
}

void NotifyDeviceResetArgs::notify(const sp<InputListenerInterface>& listener) const {
    listener->notifyDeviceReset(this);
}


// --- QueuedInputListener ---

static inline void traceEvent(const char* functionName, int32_t id) {
    if (ATRACE_ENABLED()) {
        std::string message = StringPrintf("%s(id=0x%" PRIx32 ")", functionName, id);
        ATRACE_NAME(message.c_str());
    }
}

QueuedInputListener::QueuedInputListener(const sp<InputListenerInterface>& innerListener) :
        mInnerListener(innerListener) {
}

QueuedInputListener::~QueuedInputListener() {
    size_t count = mArgsQueue.size();
    for (size_t i = 0; i < count; i++) {
        delete mArgsQueue[i];
    }
}

void QueuedInputListener::notifyConfigurationChanged(
        const NotifyConfigurationChangedArgs* args) {
    traceEvent(__func__, args->id);
    mArgsQueue.push_back(new NotifyConfigurationChangedArgs(*args));
}

void QueuedInputListener::notifyKey(const NotifyKeyArgs* args) {
    traceEvent(__func__, args->id);
    mArgsQueue.push_back(new NotifyKeyArgs(*args));
}

void QueuedInputListener::notifyMotion(const NotifyMotionArgs* args) {
    traceEvent(__func__, args->id);
    mArgsQueue.push_back(new NotifyMotionArgs(*args));
}

void QueuedInputListener::notifySwitch(const NotifySwitchArgs* args) {
    traceEvent(__func__, args->id);
    mArgsQueue.push_back(new NotifySwitchArgs(*args));
}

void QueuedInputListener::notifyDeviceReset(const NotifyDeviceResetArgs* args) {
    traceEvent(__func__, args->id);
    mArgsQueue.push_back(new NotifyDeviceResetArgs(*args));
}

void QueuedInputListener::flush() {
    size_t count = mArgsQueue.size();
    for (size_t i = 0; i < count; i++) {
        NotifyArgs* args = mArgsQueue[i];
        args->notify(mInnerListener);
        delete args;
    }
    mArgsQueue.clear();
}


} // namespace android