VerticalTextView.java

package com.turtleplayer.view;

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

/**
 * TURTLE PLAYER
 * <p/>
 * Licensed under MIT & GPL
 * <p/>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 * <p/>
 * More Information @ www.turtle-player.co.uk
 *
 * @author Simon Honegger (Hoene84)
 */

/**
 * Copy/Paste from http://blog.stylingandroid.com/archives/796
 */
public class VerticalTextView extends TextView{
	final boolean topDown;

	public VerticalTextView(Context context, AttributeSet attrs){
		super(context, attrs);
		final int gravity = getGravity();
		if(Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
			setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
			topDown = false;
		}else
			topDown = true;
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
		super.onMeasure(heightMeasureSpec, widthMeasureSpec);
		setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
	}

	@Override
	protected boolean setFrame(int l, int t, int r, int b){
		return super.setFrame(l, t, l+(b-t), t+(r-l));
	}

	@Override
	public void draw(Canvas canvas){
		if(topDown){
			canvas.translate(getHeight(), 0);
			canvas.rotate(90);
		}else {
			canvas.translate(0, getWidth());
			canvas.rotate(-90);
		}
		canvas.clipRect(0, 0, getWidth(), getHeight(), android.graphics.Region.Op.REPLACE);
		super.draw(canvas);
	}
}