Android Open Source - Backyard-Brains-Android-App Threshold Gl Surface View

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Backyard Brains Android App//w  w w .ja va  2 s  .  c  o  m
 * Copyright (C) 2011 Backyard Brains
 * by Nathan Dotz <nate (at) backyardbrains.com>
 *
 * This program 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.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.backyardbrains.drawing;

import android.content.SharedPreferences;
import android.view.MotionEvent;

import com.backyardbrains.BackyardAndroidActivity;
import com.backyardbrains.view.ScaleListener;
import com.backyardbrains.view.TwoDimensionScaleGestureDetector;

public class ThresholdGlSurfaceView extends ContinuousGLSurfaceView {

  @SuppressWarnings("unused")
  private static final String TAG = ContinuousGLSurfaceView.class
      .getCanonicalName();
  protected ThresholdRenderer renderer;
  private float initialThresholdTouch = -1;

  public ThresholdGlSurfaceView(BackyardAndroidActivity context) {
    super(context);
  }

  @Override
  protected void assignRenderer(BackyardAndroidActivity context) {
    renderer = new ThresholdRenderer(context);
    setRenderer(renderer);
    mScaleDetector = new TwoDimensionScaleGestureDetector(context,
        new ScaleListener(renderer));
  }

  protected void readSettings() {
    //renderer.setAutoScaled(settings.getBoolean("thresholdAutoscaled",
        //renderer.isAutoScaled()));
    //correct for normalized height
    //renderer.adjustThresholdValue(settings.getFloat("savedThreshold", 0) * renderer.height);
    renderer.setGlWindowHorizontalSize(settings.getInt(
        "thresholdGlWindowHorizontalSize",
        renderer.getGlWindowHorizontalSize()));
    renderer.setGlWindowVerticalSize(settings.getInt(
        "thresholdGlWindowVerticalSize",
        renderer.getGlWindowVerticalSize()));
  }

  protected void saveSettings() {
    final SharedPreferences.Editor editor = settings.edit();
    editor.clear();
    //editor.putBoolean("thresholdAutoscaled", renderer.isAutoScaled());
    editor.putInt("thresholdGlWindowHorizontalSize",
        renderer.getGlWindowHorizontalSize());
    //normalize by height
    //editor.putFloat("savedThreshold", (renderer.getThresholdYValue()/renderer.height));
    editor.putInt("thresholdGlWindowVerticalSize",
        renderer.getGlWindowVerticalSize());
    editor.commit();
    

  }

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    // TODO Auto-generated method stub
    boolean result = super.onTouchEvent(event);
    if (result) return result;
    final int action = event.getAction();
    switch (action & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
      if (Math.abs(event.getY() - renderer.getThresholdYValue()) < 30) {
        initialThresholdTouch = event.getY();
      }
      break;
    }
    case MotionEvent.ACTION_MOVE: {
      if (!mScaleDetector.isInProgress() && initialThresholdTouch != -1) {

        final float y = event.getY();
        renderer.adjustThresholdValue(y);
      }
      break;
    }
    case MotionEvent.ACTION_POINTER_UP:
    case MotionEvent.ACTION_UP: {
      initialThresholdTouch = -1;
      break;
    }
    }
    return result;
  }


}

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