package com.example.canvasapps;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.support.v4.content.res.ResourcesCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

    private ImageView mImageView;
    private Canvas mCanvas;
    private Paint mPaint = new Paint();
    private Paint mPaintText = new Paint(Paint.UNDERLINE_TEXT_FLAG);
    private Bitmap mBitmap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mImageView = (ImageView)findViewById(R.id.myimageview);
        mPaint.setColor(Color.BLUE);
        mPaintText.setColor(Color.BLACK);
        mPaintText.setTextSize(70);
    }

    public void drawSomething(View view) {
        int vWidth = view.getWidth();
        int vHeight = view.getHeight();
        mBitmap = Bitmap.createBitmap(vWidth,vHeight,Bitmap.Config.ARGB_8888);
        mImageView.setImageBitmap(mBitmap);
        mCanvas = new Canvas(mBitmap);
        mCanvas.drawColor(Color.YELLOW);
        mCanvas.drawText("Hello World!",100,100,mPaintText);

        mPaint.setColor(Color.RED);
        mPaint.setStrokeWidth(5);
        mCanvas.drawLine(100,200,400,200,mPaint);

        mPaint.setColor(Color.WHITE);
        Rect mRect = new Rect();
        mRect.set(100,250,400,400);
        mCanvas.drawRect(mRect,mPaint);

        mPaint.setColor(Color.GREEN);
        mCanvas.drawCircle(100,450,200,mPaint);

        mPaint.setColor(Color.MAGENTA);
        Path path = new Path();
        path.setFillType(Path.FillType.EVEN_ODD);
        path.moveTo(100,550);
        path.lineTo(400,550);
        path.lineTo(250,700);
        path.close();
        mCanvas.drawPath(path,mPaint);

        mPaint.setColor(Color.BLACK);
        Path atap = new Path();
        atap.setFillType(Path.FillType.EVEN_ODD);
        atap.moveTo(400,850);
        atap.lineTo(800,850);
        atap.lineTo(600,600);
        atap.close();
        mCanvas.drawPath(atap,mPaint);

        mPaint.setColor(Color.BLACK);
        Rect ruang = new Rect();
        ruang.set(450, 250,750,400);
        mCanvas.drawRect(ruang,mPaint);

        view.invalidate();
    }
}