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      contributors may be used to endorse or promote products derived
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package com.android.camera.ui;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Color;
import android.graphics.Paint.Style;
import android.graphics.Rect;
import android.graphics.RectF;
import android.hardware.Camera.Face;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.MotionEvent;

import android.hardware.camera2.CameraCharacteristics;

import com.android.camera.CameraActivity;
import com.android.camera.CaptureModule;
import com.android.camera.CaptureUI;
import com.android.camera.util.CameraUtil;
import com.android.camera.util.PersistUtil;
import org.codeaurora.snapcam.R;
import org.codeaurora.snapcam.wrapper.ExtendedFaceWrapper;

public class TouchTrackFocusRenderer extends View implements FocusIndicator {
    protected static final String TAG = "CAM_TouchTrackFocusRenderer";
    public static final boolean DEBUG =
            (PersistUtil.getCamera2Debug() == PersistUtil.CAMERA2_DEBUG_DUMP_LOG) ||
                    (PersistUtil.getCamera2Debug() == PersistUtil.CAMERA2_DEBUG_DUMP_ALL);
    private CameraActivity mActivity;
    private CaptureModule mModule;
    private int mInX = -1;
    private int mInY = -1;
    private final static int CIRCLE_THUMB_SIZE = 100;
    private final static int RECT_SLIDE_LENGTH = 145;
    private Rect mSurfaceDim;
    private CaptureUI mUI;

    // To trigger the object sync operation to get the latest ROI for the recognized object
    public final static int TRACKER_CMD_SYNC = 0;
    // To trigger the object registration with provided ROI
    public final static int TRACKER_CMD_REG = 1;
    // To cancel sync and unregister the tracking object
    public final static int TRACKER_CMD_CANCEL = 2;
    public final static int TRACKER_CMD_MAX = 3;


    public final static int STATUS_INIT = 0;
    public final static int STATUS_INPUT = 1;
    public final static int STATUS_TRACKING = 2;
    public final static int STATUS_TRACKED = 3;
    private int mStatus = STATUS_INIT;

    protected Paint mPaint;

    private Rect mRectActiveArray=new Rect();
    private int mTrackerScore = 0;
    protected int mUncroppedWidth;
    protected int mUncroppedHeight;
    protected int mDisplayOrientation;
    private   Rect mCameraBound = new Rect();
    protected Matrix mMatrix = new Matrix();
    protected RectF mRect = new RectF();
    protected boolean mMirror;
    protected Rect mOriginalCameraBound = new Rect();
    protected int mOrientation = 0;
    private float mZoom = 1.0f;

    private static final int SIDE_LENGTH = 125;

    public TouchTrackFocusRenderer(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void init(CameraActivity activity, CaptureModule module, CaptureUI ui) {
        mActivity = activity;
        mModule = module;
        mUI = ui;
        mPaint = new Paint();
        mPaint.setAntiAlias(true);
        mPaint.setStyle(Style.STROKE);
        mPaint.setStrokeWidth(3f);
        mPaint.setDither(true);
        mPaint.setColor(Color.WHITE);//setColor(0xFFFFFF00);
        mPaint.setStrokeCap(Paint.Cap.ROUND);
    }

    public void setVisible(boolean visible) {
        setVisibility(visible ? View.VISIBLE : View.GONE);
        if(!visible) {
            mStatus = STATUS_INIT;
            mInX = 0;
            mInY = 0;
        }
    }

    public void setSurfaceDim(int left, int top, int right, int bottom) {
        mSurfaceDim = new Rect(left, top, right, bottom);
    }

    public boolean handlesTouch() {
        return true;
    }

    public void onSingleTapUp(int x, int y) {
        mInX = x;
        mInY = y;
        mStatus = STATUS_INPUT;
        invalidate();
    }

    public void updateTrackerRect(int[] rectInts, int trackerScore) {
        if (mRectActiveArray == null) {
            mRectActiveArray = new Rect();
        }
        mStatus = STATUS_TRACKING;
        mTrackerScore = trackerScore;
        mRectActiveArray.set(rectInts[0], rectInts[1], rectInts[0] + rectInts[2],
                rectInts[1] + rectInts[3]);
        if (DEBUG) {
            Log.v(TAG, "updateTrackerRect mRectActiveArray :" + mRectActiveArray);
        }
        putRegisteredCords();
    }

    public void trackerRectSuccess(int[] rectInts) {
        if (mRectActiveArray == null) {
            mRectActiveArray = new Rect();
        }
        mStatus = STATUS_TRACKED;
        mRectActiveArray.set(rectInts[0], rectInts[1], rectInts[0] + rectInts[2], rectInts[1] + rectInts[3]);
        putRegisteredCords();
    }

    private void putRegisteredCords() {
        mActivity.runOnUiThread(new Runnable() {
            public void run() {
                invalidate();
            }
        });
    }

    public void onSurfaceTextureSizeChanged(int uncroppedWidth, int uncroppedHeight) {
        mUncroppedWidth = uncroppedWidth;
        mUncroppedHeight = uncroppedHeight;
    }

    @Override
    public void onDraw(Canvas canvas) {
        int rw, rh;
        rw = mUncroppedWidth;
        rh = mUncroppedHeight;
        mRect.set(mRectActiveArray);
        if (((rh > rw) && ((mDisplayOrientation == 0) || (mDisplayOrientation == 180)))
                || ((rw > rh) && ((mDisplayOrientation == 90) || (mDisplayOrientation == 270)))) {
            int temp = rw;
            rw = rh;
            rh = temp;
        }

        /*if (rw * mCameraBound.width() != mCameraBound.height() * rh) {
            if (rw == rh || (rh * 288 == rw * 352) || (rh * 480 == rw * 800)) {
                rh = rw * mCameraBound.width() / mCameraBound.height();
            } else {
                rw = rh * mCameraBound.height() / mCameraBound.width();
            }
        }*/
        CameraUtil.prepareMatrix(mMatrix, mMirror, mDisplayOrientation, rw, rh);

        // mMatrix assumes that the face coordinates are from -1000 to 1000.
        // so translate the face coordination to match the assumption.
        Matrix translateMatrix = new Matrix();
        translateMatrix.preTranslate(-mCameraBound.width() / 2f, -mCameraBound.height() / 2f);
        translateMatrix.postScale(2000f / mCameraBound.width(), 2000f / mCameraBound.height());

        int dx = (getWidth() - rw) / 2;
        int dy = (getHeight() - rh) / 2;
        dx -= (rw - mUncroppedWidth) / 2;
        dy -= (rh - mUncroppedHeight) / 2;

        // Focus indicator is directional. Rotate the matrix and the canvas
        // so it looks correctly in all orientations.
        canvas.save();
        mMatrix.postRotate(mOrientation);
        canvas.rotate(-mOrientation);

        mRect.offset(-mOriginalCameraBound.left, -mOriginalCameraBound.top);
        if (mZoom != 1.0f) {
            mRect.left = mRect.left - mCameraBound.left;
            mRect.right = mRect.right - mCameraBound.left;
            mRect.top = mRect.top - mCameraBound.top;
            mRect.bottom = mRect.bottom - mCameraBound.top;
        }
        translateMatrix.mapRect(mRect);
        mMatrix.mapRect(mRect);
        mRect.offset(dx, dy);

        if (mStatus == STATUS_TRACKED) {
            if (mRect != null) {
                mPaint.setColor(Color.GREEN);
                canvas.drawRect(mRect, mPaint);
            }
        } else if (mStatus == STATUS_TRACKING) {
            if (mRect != null) {
                if (mTrackerScore > 80) {
                    mPaint.setColor(Color.GREEN);
                } else{
                    mPaint.setColor(Color.YELLOW);
                }
                canvas.drawRect(mRect, mPaint);
            }
        } else if (mStatus == STATUS_INPUT) {
            mPaint.setColor(Color.WHITE);
            canvas.drawRect(mInX - RECT_SLIDE_LENGTH, mInY - RECT_SLIDE_LENGTH,
                    mInX + RECT_SLIDE_LENGTH, mInY + RECT_SLIDE_LENGTH, mPaint);
        }
    }

    @Override
    public void showStart() {
    }

    @Override
    public void showSuccess(boolean timeout) {
    }

    @Override
    public void showFail(boolean timeout) {

    }

    @Override
    public void clear() {

    }

    public void setOrientation(int orientation) {
        mOrientation = orientation;
    }

    public void setZoom(float zoom) {
        mZoom = zoom;
    }

    public void setOriginalCameraBound(Rect originalCameraBound) {
        mOriginalCameraBound = originalCameraBound;
    }

    public void setMirror(boolean mirror) {
        mMirror = mirror;
    }

    public void setDisplayOrientation(int orientation) {
        mDisplayOrientation = orientation;
    }

    public void setCameraBound(Rect cameraBound) {
        mCameraBound = cameraBound;
    }

}