/*
 * 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 "InputWindow"
#define LOG_NDEBUG 0

#include <android-base/stringprintf.h>
#include <binder/Parcel.h>
#include <input/InputTransport.h>
#include <input/InputWindow.h>

#include <log/log.h>

#include <ui/Rect.h>
#include <ui/Region.h>

namespace android {

const char* inputWindowFlagToString(uint32_t flag) {
    switch (flag) {
        case InputWindowInfo::FLAG_ALLOW_LOCK_WHILE_SCREEN_ON: {
            return "ALLOW_LOCK_WHILE_SCREEN_ON";
        }
        case InputWindowInfo::FLAG_DIM_BEHIND: {
            return "DIM_BEHIND";
        }
        case InputWindowInfo::FLAG_BLUR_BEHIND: {
            return "BLUR_BEHIND";
        }
        case InputWindowInfo::FLAG_NOT_FOCUSABLE: {
            return "NOT_FOCUSABLE";
        }
        case InputWindowInfo::FLAG_NOT_TOUCHABLE: {
            return "NOT_TOUCHABLE";
        }
        case InputWindowInfo::FLAG_NOT_TOUCH_MODAL: {
            return "NOT_TOUCH_MODAL";
        }
        case InputWindowInfo::FLAG_TOUCHABLE_WHEN_WAKING: {
            return "TOUCHABLE_WHEN_WAKING";
        }
        case InputWindowInfo::FLAG_KEEP_SCREEN_ON: {
            return "KEEP_SCREEN_ON";
        }
        case InputWindowInfo::FLAG_LAYOUT_IN_SCREEN: {
            return "LAYOUT_IN_SCREEN";
        }
        case InputWindowInfo::FLAG_LAYOUT_NO_LIMITS: {
            return "LAYOUT_NO_LIMITS";
        }
        case InputWindowInfo::FLAG_FULLSCREEN: {
            return "FULLSCREEN";
        }
        case InputWindowInfo::FLAG_FORCE_NOT_FULLSCREEN: {
            return "FORCE_NOT_FULLSCREEN";
        }
        case InputWindowInfo::FLAG_DITHER: {
            return "DITHER";
        }
        case InputWindowInfo::FLAG_SECURE: {
            return "SECURE";
        }
        case InputWindowInfo::FLAG_SCALED: {
            return "SCALED";
        }
        case InputWindowInfo::FLAG_IGNORE_CHEEK_PRESSES: {
            return "IGNORE_CHEEK_PRESSES";
        }
        case InputWindowInfo::FLAG_LAYOUT_INSET_DECOR: {
            return "LAYOUT_INSET_DECOR";
        }
        case InputWindowInfo::FLAG_ALT_FOCUSABLE_IM: {
            return "ALT_FOCUSABLE_IM";
        }
        case InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH: {
            return "WATCH_OUTSIDE_TOUCH";
        }
        case InputWindowInfo::FLAG_SHOW_WHEN_LOCKED: {
            return "SHOW_WHEN_LOCKED";
        }
        case InputWindowInfo::FLAG_SHOW_WALLPAPER: {
            return "SHOW_WALLPAPER";
        }
        case InputWindowInfo::FLAG_TURN_SCREEN_ON: {
            return "TURN_SCREEN_ON";
        }
        case InputWindowInfo::FLAG_DISMISS_KEYGUARD: {
            return "DISMISS_KEYGUARD";
        }
        case InputWindowInfo::FLAG_SPLIT_TOUCH: {
            return "SPLIT_TOUCH";
        }
        case InputWindowInfo::FLAG_HARDWARE_ACCELERATED: {
            return "HARDWARE_ACCELERATED";
        }
        case InputWindowInfo::FLAG_LAYOUT_IN_OVERSCAN: {
            return "LAYOUT_IN_OVERSCAN";
        }
        case InputWindowInfo::FLAG_TRANSLUCENT_STATUS: {
            return "TRANSLUCENT_STATUS";
        }
        case InputWindowInfo::FLAG_TRANSLUCENT_NAVIGATION: {
            return "TRANSLUCENT_NAVIGATION";
        }
        case InputWindowInfo::FLAG_LOCAL_FOCUS_MODE: {
            return "LOCAL_FOCUS_MODE";
        }
        case InputWindowInfo::FLAG_SLIPPERY: {
            return "SLIPPERY";
        }
        case InputWindowInfo::FLAG_LAYOUT_ATTACHED_IN_DECOR: {
            return "LAYOUT_ATTACHED_IN_DECOR";
        }
        case InputWindowInfo::FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS: {
            return "DRAWS_SYSTEM_BAR_BACKGROUNDS";
        }
    }
    return "UNKNOWN";
}

std::string inputWindowFlagsToString(uint32_t flags) {
    std::string result;
    for (BitSet32 bits(flags); !bits.isEmpty();) {
        uint32_t bit = bits.clearLastMarkedBit(); // counts from left
        const uint32_t flag = 1 << (32 - bit - 1);
        result += android::base::StringPrintf("%s | ", inputWindowFlagToString(flag));
    }
    return result;
}

// --- InputWindowInfo ---
void InputWindowInfo::addTouchableRegion(const Rect& region) {
    touchableRegion.orSelf(region);
}

bool InputWindowInfo::touchableRegionContainsPoint(int32_t x, int32_t y) const {
    return touchableRegion.contains(x,y);
}

bool InputWindowInfo::frameContainsPoint(int32_t x, int32_t y) const {
    return x >= frameLeft && x < frameRight
            && y >= frameTop && y < frameBottom;
}

bool InputWindowInfo::supportsSplitTouch() const {
    return layoutParamsFlags & FLAG_SPLIT_TOUCH;
}

bool InputWindowInfo::overlaps(const InputWindowInfo* other) const {
    return frameLeft < other->frameRight && frameRight > other->frameLeft
            && frameTop < other->frameBottom && frameBottom > other->frameTop;
}

status_t InputWindowInfo::write(Parcel& output) const {
    if (name.empty()) {
        output.writeInt32(0);
        return OK;
    }
    output.writeInt32(1);
    status_t s = output.writeStrongBinder(token);
    if (s != OK) return s;

    output.writeInt32(id);
    output.writeString8(String8(name.c_str()));
    output.writeInt32(layoutParamsFlags);
    output.writeInt32(layoutParamsType);
    output.writeInt64(dispatchingTimeout);
    output.writeInt32(frameLeft);
    output.writeInt32(frameTop);
    output.writeInt32(frameRight);
    output.writeInt32(frameBottom);
    output.writeInt32(surfaceInset);
    output.writeFloat(globalScaleFactor);
    output.writeFloat(windowXScale);
    output.writeFloat(windowYScale);
    output.writeBool(visible);
    output.writeBool(canReceiveKeys);
    output.writeBool(hasFocus);
    output.writeBool(hasWallpaper);
    output.writeBool(paused);
    output.writeBool(trustedOverlay);
    output.writeInt32(ownerPid);
    output.writeInt32(ownerUid);
    output.writeInt32(inputFeatures);
    output.writeInt32(displayId);
    output.writeInt32(portalToDisplayId);
    applicationInfo.write(output);
    output.write(touchableRegion);
    output.writeBool(replaceTouchableRegionWithCrop);
    output.writeStrongBinder(touchableRegionCropHandle.promote());
    return OK;
}

InputWindowInfo InputWindowInfo::read(const Parcel& from) {
    InputWindowInfo ret;

    if (from.readInt32() == 0) {
        return ret;
    }

    ret.token = from.readStrongBinder();
    ret.id = from.readInt32();
    ret.name = from.readString8().c_str();
    ret.layoutParamsFlags = from.readInt32();
    ret.layoutParamsType = from.readInt32();
    ret.dispatchingTimeout = from.readInt64();
    ret.frameLeft = from.readInt32();
    ret.frameTop = from.readInt32();
    ret.frameRight = from.readInt32();
    ret.frameBottom = from.readInt32();
    ret.surfaceInset = from.readInt32();
    ret.globalScaleFactor = from.readFloat();
    ret.windowXScale = from.readFloat();
    ret.windowYScale = from.readFloat();
    ret.visible = from.readBool();
    ret.canReceiveKeys = from.readBool();
    ret.hasFocus = from.readBool();
    ret.hasWallpaper = from.readBool();
    ret.paused = from.readBool();
    ret.trustedOverlay = from.readBool();
    ret.ownerPid = from.readInt32();
    ret.ownerUid = from.readInt32();
    ret.inputFeatures = from.readInt32();
    ret.displayId = from.readInt32();
    ret.portalToDisplayId = from.readInt32();
    ret.applicationInfo = InputApplicationInfo::read(from);
    from.read(ret.touchableRegion);
    ret.replaceTouchableRegionWithCrop = from.readBool();
    ret.touchableRegionCropHandle = from.readStrongBinder();

    return ret;
}

InputWindowInfo::InputWindowInfo(const Parcel& from) {
    *this = read(from);
}

// --- InputWindowHandle ---

InputWindowHandle::InputWindowHandle() {
}

InputWindowHandle::~InputWindowHandle() {
}

void InputWindowHandle::releaseChannel() {
    mInfo.token.clear();
}

sp<IBinder> InputWindowHandle::getToken() const {
    return mInfo.token;
}

void InputWindowHandle::updateFrom(sp<InputWindowHandle> handle) {
    mInfo = handle->mInfo;
}

} // namespace android