content: /*
   * Copyright 2017 Thomas Andres
   *
   * This file is part of Kandroid.
   *
   * Kandroid is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * Kandroid is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package in.andres.kandroid.widget;
  
  import android.content.Context;
  import android.graphics.Canvas;
  import android.text.TextPaint;
  import android.util.AttributeSet;
  import android.view.Gravity;
  import android.widget.TextView;
  
  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 void onDraw(Canvas canvas){
          TextPaint textPaint = getPaint();
          textPaint.setColor(getCurrentTextColor());
          textPaint.drawableState = getDrawableState();
  
          canvas.save();
  
          if(topDown){
              canvas.translate(getWidth(), 0);
              canvas.rotate(90);
          }else {
              canvas.translate(0, getHeight());
              canvas.rotate(-90);
          }
  
  
          canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());
  
          getLayout().draw(canvas);
          canvas.restore();
      }
  }