package io.interactionlab.capimgdemo;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.View;

import org.hcilab.libftsp.capacitivematrix.blobdetection.BlobBoundingBox;
import org.hcilab.libftsp.capacitivematrix.capmatrix.CapacitiveImageTS;

import java.util.List;

/**
 * Created by Huy on 12/12/2017.
 */

public class DrawView extends View {
    private final Paint paint = new Paint();

    private CapacitiveImageTS capacitiveImage;
    private List<BlobBoundingBox> bbbl;
    private List<String> labels;
    private List<Integer> colors;

    public DrawView(Context context) {
        super(context);
    }


    public void updateView(CapacitiveImageTS capacitiveImage) {
        this.capacitiveImage = capacitiveImage;
        invalidate();
    }

    public void updateView(CapacitiveImageTS capacitiveImage, List<BlobBoundingBox> bbbl, List<String> labels, List<Integer> colors) {
        this.capacitiveImage = capacitiveImage;
        this.bbbl = bbbl;
        this.labels = labels;
        this.colors = colors;
        invalidate();
    }

    private void onDrawCNN(Canvas canvas, int boxWidth, int boxHeight) {
        if (bbbl != null) {
            // Draw Labels
            for (int i = 0; i < bbbl.size(); i++) {
                BlobBoundingBox bbb = bbbl.get(i);
                paint.setColor(this.colors.get(i));
                paint.setStyle(Paint.Style.STROKE);
                Rect r = new Rect(bbb.x1 * boxWidth, bbb.y1 * boxHeight, bbb.x2 * boxWidth, bbb.y2 * boxHeight);
                canvas.drawRect(r, paint);

                paint.setTextSize(45);
                canvas.drawText(labels.get(i), bbb.x1 * boxWidth - (int) (1.0 * boxWidth), bbb.y1 * boxHeight - (int) (1.0 * boxHeight), paint);
            }
        }
    }

    private void onDrawLSTMCNN(Canvas canvas, int boxWidth, int boxHeight) {
        if (!labels.isEmpty()) {
            paint.setColor(Color.GREEN);
            paint.setStyle(Paint.Style.STROKE);
            Rect r = new Rect(boxWidth, 5 * boxHeight, 14 * boxWidth, 10 * boxHeight);
            canvas.drawRect(r, paint);

            paint.setTextSize(45);
            canvas.drawText(labels.get(0), 2 * boxWidth, 7 * boxHeight, paint);
        }
    }


    @Override
    public void onDraw(Canvas canvas) {
        int boxWidth = 1080 / 15;
        int boxHeight = 1920 / 27;

        if (capacitiveImage == null) {
            return;
        }

        paint.setStyle(Paint.Style.FILL);
        int[][] matrix = capacitiveImage.getMatrix();

        // Draw capacitive matrix
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[i].length; j++) {
                int val = matrix[i][j];

                if (val < 0)
                    val = 0;

                if (val > 255)
                    val = 255;

                // Draw rectangle
                paint.setColor(new Color().rgb(val, val, val));
                paint.setStyle(Paint.Style.FILL);
                Rect r = new Rect(j * boxWidth, (i) * boxHeight, (j + 1) * boxWidth, (i + 1) * boxHeight);
                canvas.drawRect(r, paint);

                // Write number
                paint.setTextSize(15);
                paint.setColor(new Color().rgb(255 - val, 255 - val, 255 - val));
                canvas.drawText(val + "", j * boxWidth + (int) (0.5 * boxWidth), i * boxHeight + (int) (0.5 * boxHeight), paint);
            }
        }
        //onDrawLSTMCNN(canvas, boxWidth, boxHeight);
    }
}