NavButton.java :  » UnTagged » moonblink » org » hermit » tricorder » Android Open Source

/**
 * Tricorder: turn your phone into a tricorder.
 * 
 * This is an Android implementation of a Star Trek tricorder, based on
 * the phone's own sensors.  It's also a demo project for sensor access.
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2
 *   as published by the Free Software Foundation (see COPYING).
 * 
 *   This program 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.
 */


package org.hermit.tricorder;

import org.hermit.android.instruments.Gauge;
import org.hermit.tricorder.TricorderView.ViewDefinition;

import android.graphics.Typeface;
import android.util.TypedValue;
import android.view.Gravity;
import android.widget.TextView;


/**
 * A button in the navigation bar.  We don't want lots of fancy button
 * decorations, just a flat coloured rectangle, so we use TextView
 * as the base class.  The click handler passes the event up to the
 * parent app.
 */
class NavButton
  extends TextView
{

  // ******************************************************************** //
  // Constructor.
  // ******************************************************************** //

  NavButton(Tricorder parent, ViewDefinition def) {
    super(parent);

    setTextColor(0xff000000);
        setTextSize(TypedValue.COMPLEX_UNIT_PX, Gauge.getHeadTextSize());
    setTextScaleX(0.5f);
    setGravity(Gravity.BOTTOM | Gravity.RIGHT);
    setTypeface(Typeface.MONOSPACE, Typeface.BOLD);
    setPadding(0, 0, 4, 0);
    
    if (def != null)
      setViewDef(def);
  }


  /**
   * Set the view definition this button is assigned to.
   * 
   * @param  vdef    The view definition this button is assigned to.
   */
  void setViewDef(ViewDefinition vdef) {
    setViewDef(vdef, vdef.labelId);
  }
  

  /**
   * Set the view definition this button is assigned to.
   * 
     * @param  vdef     The view definition this button is assigned to.
     * @param  text     Text to display in this button.
   */
  void setViewDef(ViewDefinition vdef, int text) {
    viewDefinition = vdef;
    setText(text);
    setBackgroundColor(viewDefinition.bgColor);
  }
  
  
  /**
   * Get the view definition this button is assigned to.
   * 
   * @return      The view definition this button is assigned to.
   */
  ViewDefinition getViewDef() {
    return viewDefinition;
  }
  
  
  // ******************************************************************** //
  // Private Data.
  // ******************************************************************** //

  // View definition this button is linked to.
  private ViewDefinition viewDefinition;

}