inclined view

InclinedVIew.java

/*
 *  @category Daimler
 *  @copyright Copyright (C) 2017 Contus. All rights reserved.
 *  @license http://www.apache.org/licenses/LICENSE-2.0
 */

package daimler.com.loadcarrier.uiux;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.view.View;

import daimler.com.loadcarrier.R;

/**
 * An extension of view class that creates a tapered view effect.
 *
 * @author ContusTeam <[email protected]>
 * @version 1.0
 */
public class InclinedVIew extends View {

    private Paint paint;

    private Path path;

    private int w;

    private int h;

    private int inclinedAreaColor = Color.WHITE;

    /**
     * Public constructor to create an instance of this view.
     *
     * @param ctx   The context this view is created with.
     * @param attrs The attribute set for this view.
     */
    public InclinedVIew(Context ctx, AttributeSet attrs) {
        super(ctx, attrs);

        init(ctx, attrs);
        setWillNotDraw(false);
        paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setStrokeWidth(2);
        paint.setColor(inclinedAreaColor);
        paint.setStyle(Paint.Style.FILL_AND_STROKE);
        paint.setAntiAlias(true);
        path = new Path();
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        w = getMeasuredWidth();

        h = getMeasuredHeight();
    }

    /**
     * Searches for InclinedVIew_color and applies that color to the view.
     *
     * @param context The context instance with which this view is initialized.
     * @param attrs   The attrs from xml.
     */
    private void init(Context context, AttributeSet attrs) {

        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.InclinedVIew);

        inclinedAreaColor = typedArray.getColor(R.styleable.InclinedVIew_color, Color.WHITE);
        typedArray.recycle();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        path.reset();
        path.setFillType(Path.FillType.EVEN_ODD);
        path.moveTo(0, h);
        path.lineTo(w, 0);
        path.lineTo(w, h);
        path.close();
        canvas.drawPath(path, paint);
    }
}