Custom drawn Android button which aligns left drawable and its text to center.

DrawableAlignedButton.java

package com.webileapps.myrtprofile;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.Button;

/**
 * 
 * @author Rajiv
 * 
 * A Button which aligns its text and left drawable at center. Especially useful when we have buttons which don't wrap.
 * 
 * usage:
 * 
 * <com.webileapps.myrtprofile.DrawableAlignedButton
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:drawableLeft="@drawable/plone"
            android:gravity="center"
            android:padding="7dp"
            android:text="Text" />
 */
public class DrawableAlignedButton extends Button {

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

	public DrawableAlignedButton(Context context, AttributeSet attrs, int style) {
		super(context, attrs, style);
	}

	private Drawable mLeftDrawable;
	
	@Override
  //Overriden to work only with a left drawable.
	public void setCompoundDrawablesWithIntrinsicBounds(Drawable left,
			Drawable top, Drawable right, Drawable bottom) {
		if(left == null) return;
		left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
		mLeftDrawable = left;
	}
	
	@Override
	protected void onDraw(Canvas canvas) {
		//transform the canvas so we can draw both image and text at center.
		canvas.save();
		canvas.translate(2+mLeftDrawable.getIntrinsicWidth()/2, 0);
		super.onDraw(canvas);
		canvas.restore();
		canvas.save();
		int widthOfText = (int)getPaint().measureText(getText().toString());
		int left = (getWidth()+widthOfText)/2 - mLeftDrawable.getIntrinsicWidth() - 2;
		canvas.translate(left, (getHeight()-mLeftDrawable.getIntrinsicHeight())/2);
		mLeftDrawable.draw(canvas);
		canvas.restore();
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		int height = getMeasuredHeight();
		height = Math.max(height, mLeftDrawable.getIntrinsicHeight() + getPaddingTop() + getPaddingBottom());
		setMeasuredDimension(getMeasuredWidth(), height);
	}
}