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package com.beanie.examples.invertedbutton;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.Button;

public class InvertedButton extends Button {

    public InvertedButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        setWillNotDraw(false);
        setGravity(Gravity.CENTER);
    }

    public InvertedButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        setWillNotDraw(false);
        setGravity(Gravity.CENTER);
    }

    public InvertedButton(Context context) {
        super(context);
        setWillNotDraw(false);
        setGravity(Gravity.CENTER);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        int left = getPaddingLeft();
        int top = getPaddingTop();
        int right = getPaddingRight();
        int bottom = getPaddingBottom();
        int width = getWidth() - left - right;
        int height = getHeight() - top - bottom;
        
        int saveCount = canvas.getSaveCount();
        canvas.translate(left + width / 2, top + height / 2);
        canvas.rotate(-180);
        canvas.translate((-width / 2)-left, (-height / 2)-top);
        canvas.restoreToCount(saveCount);
        
        super.onDraw(canvas);

    }

}